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-rw-r--r--fs/udf/Kconfig18
-rw-r--r--fs/udf/Makefile4
-rw-r--r--fs/udf/balloc.c355
-rw-r--r--fs/udf/crc.c172
-rw-r--r--fs/udf/dir.c164
-rw-r--r--fs/udf/directory.c122
-rw-r--r--fs/udf/ecma_167.h429
-rw-r--r--fs/udf/file.c209
-rw-r--r--fs/udf/fsync.c52
-rw-r--r--fs/udf/ialloc.c128
-rw-r--r--fs/udf/inode.c1039
-rw-r--r--fs/udf/lowlevel.c14
-rw-r--r--fs/udf/misc.c62
-rw-r--r--fs/udf/namei.c656
-rw-r--r--fs/udf/osta_udf.h22
-rw-r--r--fs/udf/partition.c112
-rw-r--r--fs/udf/super.c2148
-rw-r--r--fs/udf/symlink.c38
-rw-r--r--fs/udf/truncate.c249
-rw-r--r--fs/udf/udf_i.h60
-rw-r--r--fs/udf/udf_sb.h140
-rw-r--r--fs/udf/udfdecl.h161
-rw-r--r--fs/udf/udfend.h50
-rw-r--r--fs/udf/udftime.c40
-rw-r--r--fs/udf/unicode.c131
25 files changed, 3403 insertions, 3172 deletions
diff --git a/fs/udf/Kconfig b/fs/udf/Kconfig
new file mode 100644
index 00000000000..0e0e99bd6bc
--- /dev/null
+++ b/fs/udf/Kconfig
@@ -0,0 +1,18 @@
+config UDF_FS
+ tristate "UDF file system support"
+ select CRC_ITU_T
+ help
+ This is the new file system used on some CD-ROMs and DVDs. Say Y if
+ you intend to mount DVD discs or CDRW's written in packet mode, or
+ if written to by other UDF utilities, such as DirectCD.
+ Please read <file:Documentation/filesystems/udf.txt>.
+
+ To compile this file system support as a module, choose M here: the
+ module will be called udf.
+
+ If unsure, say N.
+
+config UDF_NLS
+ bool
+ default y
+ depends on (UDF_FS=m && NLS) || (UDF_FS=y && NLS=y)
diff --git a/fs/udf/Makefile b/fs/udf/Makefile
index be845e7540e..eb880f66c23 100644
--- a/fs/udf/Makefile
+++ b/fs/udf/Makefile
@@ -5,5 +5,5 @@
obj-$(CONFIG_UDF_FS) += udf.o
udf-objs := balloc.o dir.o file.o ialloc.o inode.o lowlevel.o namei.o \
- partition.o super.o truncate.o symlink.o fsync.o \
- crc.o directory.o misc.o udftime.o unicode.o
+ partition.o super.o truncate.o symlink.o \
+ directory.o misc.o udftime.o unicode.o
diff --git a/fs/udf/balloc.c b/fs/udf/balloc.c
index f855dcbbdfb..1ba2baaf436 100644
--- a/fs/udf/balloc.c
+++ b/fs/udf/balloc.c
@@ -21,65 +21,16 @@
#include "udfdecl.h"
-#include <linux/quotaops.h>
#include <linux/buffer_head.h>
#include <linux/bitops.h>
#include "udf_i.h"
#include "udf_sb.h"
-#define udf_clear_bit(nr, addr) ext2_clear_bit(nr, addr)
-#define udf_set_bit(nr, addr) ext2_set_bit(nr, addr)
-#define udf_test_bit(nr, addr) ext2_test_bit(nr, addr)
-#define udf_find_first_one_bit(addr, size) find_first_one_bit(addr, size)
-#define udf_find_next_one_bit(addr, size, offset) \
- find_next_one_bit(addr, size, offset)
-
-#define leBPL_to_cpup(x) leNUM_to_cpup(BITS_PER_LONG, x)
-#define leNUM_to_cpup(x, y) xleNUM_to_cpup(x, y)
-#define xleNUM_to_cpup(x, y) (le ## x ## _to_cpup(y))
-#define uintBPL_t uint(BITS_PER_LONG)
-#define uint(x) xuint(x)
-#define xuint(x) __le ## x
-
-static inline int find_next_one_bit(void *addr, int size, int offset)
-{
- uintBPL_t *p = ((uintBPL_t *) addr) + (offset / BITS_PER_LONG);
- int result = offset & ~(BITS_PER_LONG - 1);
- unsigned long tmp;
-
- if (offset >= size)
- return size;
- size -= result;
- offset &= (BITS_PER_LONG - 1);
- if (offset) {
- tmp = leBPL_to_cpup(p++);
- tmp &= ~0UL << offset;
- if (size < BITS_PER_LONG)
- goto found_first;
- if (tmp)
- goto found_middle;
- size -= BITS_PER_LONG;
- result += BITS_PER_LONG;
- }
- while (size & ~(BITS_PER_LONG - 1)) {
- tmp = leBPL_to_cpup(p++);
- if (tmp)
- goto found_middle;
- result += BITS_PER_LONG;
- size -= BITS_PER_LONG;
- }
- if (!size)
- return result;
- tmp = leBPL_to_cpup(p);
-found_first:
- tmp &= ~0UL >> (BITS_PER_LONG - size);
-found_middle:
- return result + ffz(~tmp);
-}
-
-#define find_first_one_bit(addr, size)\
- find_next_one_bit((addr), (size), 0)
+#define udf_clear_bit __test_and_clear_bit_le
+#define udf_set_bit __test_and_set_bit_le
+#define udf_test_bit test_bit_le
+#define udf_find_next_one_bit find_next_bit_le
static int read_block_bitmap(struct super_block *sb,
struct udf_bitmap *bitmap, unsigned int block,
@@ -87,12 +38,12 @@ static int read_block_bitmap(struct super_block *sb,
{
struct buffer_head *bh = NULL;
int retval = 0;
- kernel_lb_addr loc;
+ struct kernel_lb_addr loc;
loc.logicalBlockNum = bitmap->s_extPosition;
loc.partitionReferenceNum = UDF_SB(sb)->s_partition;
- bh = udf_tread(sb, udf_get_lb_pblock(sb, loc, block));
+ bh = udf_tread(sb, udf_get_lb_pblock(sb, &loc, block));
if (!bh)
retval = -EIO;
@@ -108,8 +59,8 @@ static int __load_block_bitmap(struct super_block *sb,
int nr_groups = bitmap->s_nr_groups;
if (block_group >= nr_groups) {
- udf_debug("block_group (%d) > nr_groups (%d)\n", block_group,
- nr_groups);
+ udf_debug("block_group (%d) > nr_groups (%d)\n",
+ block_group, nr_groups);
}
if (bitmap->s_block_bitmap[block_group]) {
@@ -140,28 +91,28 @@ static inline int load_block_bitmap(struct super_block *sb,
return slot;
}
-static bool udf_add_free_space(struct udf_sb_info *sbi,
- u16 partition, u32 cnt)
+static void udf_add_free_space(struct super_block *sb, u16 partition, u32 cnt)
{
+ struct udf_sb_info *sbi = UDF_SB(sb);
struct logicalVolIntegrityDesc *lvid;
- if (sbi->s_lvid_bh == NULL)
- return false;
+ if (!sbi->s_lvid_bh)
+ return;
lvid = (struct logicalVolIntegrityDesc *)sbi->s_lvid_bh->b_data;
- lvid->freeSpaceTable[partition] = cpu_to_le32(le32_to_cpu(
- lvid->freeSpaceTable[partition]) + cnt);
- return true;
+ le32_add_cpu(&lvid->freeSpaceTable[partition], cnt);
+ udf_updated_lvid(sb);
}
static void udf_bitmap_free_blocks(struct super_block *sb,
- struct inode *inode,
struct udf_bitmap *bitmap,
- kernel_lb_addr bloc, uint32_t offset,
+ struct kernel_lb_addr *bloc,
+ uint32_t offset,
uint32_t count)
{
struct udf_sb_info *sbi = UDF_SB(sb);
struct buffer_head *bh = NULL;
+ struct udf_part_map *partmap;
unsigned long block;
unsigned long block_group;
unsigned long bit;
@@ -170,17 +121,17 @@ static void udf_bitmap_free_blocks(struct super_block *sb,
unsigned long overflow;
mutex_lock(&sbi->s_alloc_mutex);
- if (bloc.logicalBlockNum < 0 ||
- (bloc.logicalBlockNum + count) >
- sbi->s_partmaps[bloc.partitionReferenceNum].s_partition_len) {
+ partmap = &sbi->s_partmaps[bloc->partitionReferenceNum];
+ if (bloc->logicalBlockNum + count < count ||
+ (bloc->logicalBlockNum + count) > partmap->s_partition_len) {
udf_debug("%d < %d || %d + %d > %d\n",
- bloc.logicalBlockNum, 0, bloc.logicalBlockNum, count,
- sbi->s_partmaps[bloc.partitionReferenceNum].
- s_partition_len);
+ bloc->logicalBlockNum, 0,
+ bloc->logicalBlockNum, count,
+ partmap->s_partition_len);
goto error_return;
}
- block = bloc.logicalBlockNum + offset +
+ block = bloc->logicalBlockNum + offset +
(sizeof(struct spaceBitmapDesc) << 3);
do {
@@ -204,13 +155,10 @@ static void udf_bitmap_free_blocks(struct super_block *sb,
if (udf_set_bit(bit + i, bh->b_data)) {
udf_debug("bit %ld already set\n", bit + i);
udf_debug("byte=%2x\n",
- ((char *)bh->b_data)[(bit + i) >> 3]);
- } else {
- if (inode)
- DQUOT_FREE_BLOCK(inode, 1);
- udf_add_free_space(sbi, sbi->s_partition, 1);
+ ((char *)bh->b_data)[(bit + i) >> 3]);
}
}
+ udf_add_free_space(sb, sbi->s_partition, count);
mark_buffer_dirty(bh);
if (overflow) {
block += count;
@@ -219,14 +167,10 @@ static void udf_bitmap_free_blocks(struct super_block *sb,
} while (overflow);
error_return:
- sb->s_dirt = 1;
- if (sbi->s_lvid_bh)
- mark_buffer_dirty(sbi->s_lvid_bh);
mutex_unlock(&sbi->s_alloc_mutex);
}
static int udf_bitmap_prealloc_blocks(struct super_block *sb,
- struct inode *inode,
struct udf_bitmap *bitmap,
uint16_t partition, uint32_t first_block,
uint32_t block_count)
@@ -240,7 +184,7 @@ static int udf_bitmap_prealloc_blocks(struct super_block *sb,
mutex_lock(&sbi->s_alloc_mutex);
part_len = sbi->s_partmaps[partition].s_partition_len;
- if (first_block < 0 || first_block >= part_len)
+ if (first_block >= part_len)
goto out;
if (first_block + block_count > part_len)
@@ -260,15 +204,8 @@ static int udf_bitmap_prealloc_blocks(struct super_block *sb,
bit = block % (sb->s_blocksize << 3);
while (bit < (sb->s_blocksize << 3) && block_count > 0) {
- if (!udf_test_bit(bit, bh->b_data))
+ if (!udf_clear_bit(bit, bh->b_data))
goto out;
- else if (DQUOT_PREALLOC_BLOCK(inode, 1))
- goto out;
- else if (!udf_clear_bit(bit, bh->b_data)) {
- udf_debug("bit already cleared for block %d\n", bit);
- DQUOT_FREE_BLOCK(inode, 1);
- goto out;
- }
block_count--;
alloc_count++;
bit++;
@@ -278,15 +215,12 @@ static int udf_bitmap_prealloc_blocks(struct super_block *sb,
} while (block_count > 0);
out:
- if (udf_add_free_space(sbi, partition, -alloc_count))
- mark_buffer_dirty(sbi->s_lvid_bh);
- sb->s_dirt = 1;
+ udf_add_free_space(sb, partition, -alloc_count);
mutex_unlock(&sbi->s_alloc_mutex);
return alloc_count;
}
static int udf_bitmap_new_block(struct super_block *sb,
- struct inode *inode,
struct udf_bitmap *bitmap, uint16_t partition,
uint32_t goal, int *err)
{
@@ -301,7 +235,7 @@ static int udf_bitmap_new_block(struct super_block *sb,
mutex_lock(&sbi->s_alloc_mutex);
repeat:
- if (goal < 0 || goal >= sbi->s_partmaps[partition].s_partition_len)
+ if (goal >= sbi->s_partmaps[partition].s_partition_len)
goal = 0;
nr_groups = bitmap->s_nr_groups;
@@ -360,7 +294,7 @@ repeat:
break;
}
} else {
- bit = udf_find_next_one_bit((char *)bh->b_data,
+ bit = udf_find_next_one_bit(bh->b_data,
sb->s_blocksize << 3,
group_start << 3);
if (bit < sb->s_blocksize << 3)
@@ -390,16 +324,6 @@ search_back:
}
got_block:
-
- /*
- * Check quota for allocation of this block.
- */
- if (inode && DQUOT_ALLOC_BLOCK(inode, 1)) {
- mutex_unlock(&sbi->s_alloc_mutex);
- *err = -EDQUOT;
- return 0;
- }
-
newblock = bit + (block_group << (sb->s_blocksize_bits + 3)) -
(sizeof(struct spaceBitmapDesc) << 3);
@@ -410,9 +334,7 @@ got_block:
mark_buffer_dirty(bh);
- if (udf_add_free_space(sbi, partition, -1))
- mark_buffer_dirty(sbi->s_lvid_bh);
- sb->s_dirt = 1;
+ udf_add_free_space(sb, partition, -1);
mutex_unlock(&sbi->s_alloc_mutex);
*err = 0;
return newblock;
@@ -424,41 +346,37 @@ error_return:
}
static void udf_table_free_blocks(struct super_block *sb,
- struct inode *inode,
struct inode *table,
- kernel_lb_addr bloc, uint32_t offset,
+ struct kernel_lb_addr *bloc,
+ uint32_t offset,
uint32_t count)
{
struct udf_sb_info *sbi = UDF_SB(sb);
+ struct udf_part_map *partmap;
uint32_t start, end;
uint32_t elen;
- kernel_lb_addr eloc;
+ struct kernel_lb_addr eloc;
struct extent_position oepos, epos;
int8_t etype;
int i;
struct udf_inode_info *iinfo;
mutex_lock(&sbi->s_alloc_mutex);
- if (bloc.logicalBlockNum < 0 ||
- (bloc.logicalBlockNum + count) >
- sbi->s_partmaps[bloc.partitionReferenceNum].s_partition_len) {
+ partmap = &sbi->s_partmaps[bloc->partitionReferenceNum];
+ if (bloc->logicalBlockNum + count < count ||
+ (bloc->logicalBlockNum + count) > partmap->s_partition_len) {
udf_debug("%d < %d || %d + %d > %d\n",
- bloc.logicalBlockNum, 0, bloc.logicalBlockNum, count,
- sbi->s_partmaps[bloc.partitionReferenceNum].
- s_partition_len);
+ bloc->logicalBlockNum, 0,
+ bloc->logicalBlockNum, count,
+ partmap->s_partition_len);
goto error_return;
}
iinfo = UDF_I(table);
- /* We do this up front - There are some error conditions that
- could occure, but.. oh well */
- if (inode)
- DQUOT_FREE_BLOCK(inode, count);
- if (udf_add_free_space(sbi, sbi->s_partition, count))
- mark_buffer_dirty(sbi->s_lvid_bh);
+ udf_add_free_space(sb, sbi->s_partition, count);
- start = bloc.logicalBlockNum + offset;
- end = bloc.logicalBlockNum + offset + count - 1;
+ start = bloc->logicalBlockNum + offset;
+ end = bloc->logicalBlockNum + offset + count - 1;
epos.offset = oepos.offset = sizeof(struct unallocSpaceEntry);
elen = 0;
@@ -484,7 +402,7 @@ static void udf_table_free_blocks(struct super_block *sb,
start += count;
count = 0;
}
- udf_write_aext(table, &oepos, eloc, elen, 1);
+ udf_write_aext(table, &oepos, &eloc, elen, 1);
} else if (eloc.logicalBlockNum == (end + 1)) {
if ((0x3FFFFFFF - elen) <
(count << sb->s_blocksize_bits)) {
@@ -503,7 +421,7 @@ static void udf_table_free_blocks(struct super_block *sb,
end -= count;
count = 0;
}
- udf_write_aext(table, &oepos, eloc, elen, 1);
+ udf_write_aext(table, &oepos, &eloc, elen, 1);
}
if (epos.bh != oepos.bh) {
@@ -533,8 +451,8 @@ static void udf_table_free_blocks(struct super_block *sb,
*/
int adsize;
- short_ad *sad = NULL;
- long_ad *lad = NULL;
+ struct short_ad *sad = NULL;
+ struct long_ad *lad = NULL;
struct allocExtDesc *aed;
eloc.logicalBlockNum = start;
@@ -542,9 +460,9 @@ static void udf_table_free_blocks(struct super_block *sb,
(count << sb->s_blocksize_bits);
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
- adsize = sizeof(short_ad);
+ adsize = sizeof(struct short_ad);
else if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
- adsize = sizeof(long_ad);
+ adsize = sizeof(struct long_ad);
else {
brelse(oepos.bh);
brelse(epos.bh);
@@ -552,7 +470,7 @@ static void udf_table_free_blocks(struct super_block *sb,
}
if (epos.offset + (2 * adsize) > sb->s_blocksize) {
- char *sptr, *dptr;
+ unsigned char *sptr, *dptr;
int loffset;
brelse(oepos.bh);
@@ -564,7 +482,7 @@ static void udf_table_free_blocks(struct super_block *sb,
elen -= sb->s_blocksize;
epos.bh = udf_tread(sb,
- udf_get_lb_pblock(sb, epos.block, 0));
+ udf_get_lb_pblock(sb, &epos.block, 0));
if (!epos.bh) {
brelse(oepos.bh);
goto error_return;
@@ -589,10 +507,8 @@ static void udf_table_free_blocks(struct super_block *sb,
sptr = oepos.bh->b_data + epos.offset;
aed = (struct allocExtDesc *)
oepos.bh->b_data;
- aed->lengthAllocDescs =
- cpu_to_le32(le32_to_cpu(
- aed->lengthAllocDescs) +
- adsize);
+ le32_add_cpu(&aed->lengthAllocDescs,
+ adsize);
} else {
sptr = iinfo->i_ext.i_data +
epos.offset;
@@ -604,15 +520,15 @@ static void udf_table_free_blocks(struct super_block *sb,
if (sbi->s_udfrev >= 0x0200)
udf_new_tag(epos.bh->b_data, TAG_IDENT_AED,
3, 1, epos.block.logicalBlockNum,
- sizeof(tag));
+ sizeof(struct tag));
else
udf_new_tag(epos.bh->b_data, TAG_IDENT_AED,
2, 1, epos.block.logicalBlockNum,
- sizeof(tag));
+ sizeof(struct tag));
switch (iinfo->i_alloc_type) {
case ICBTAG_FLAG_AD_SHORT:
- sad = (short_ad *)sptr;
+ sad = (struct short_ad *)sptr;
sad->extLength = cpu_to_le32(
EXT_NEXT_EXTENT_ALLOCDECS |
sb->s_blocksize);
@@ -620,7 +536,7 @@ static void udf_table_free_blocks(struct super_block *sb,
cpu_to_le32(epos.block.logicalBlockNum);
break;
case ICBTAG_FLAG_AD_LONG:
- lad = (long_ad *)sptr;
+ lad = (struct long_ad *)sptr;
lad->extLength = cpu_to_le32(
EXT_NEXT_EXTENT_ALLOCDECS |
sb->s_blocksize);
@@ -638,16 +554,14 @@ static void udf_table_free_blocks(struct super_block *sb,
/* It's possible that stealing the block emptied the extent */
if (elen) {
- udf_write_aext(table, &epos, eloc, elen, 1);
+ udf_write_aext(table, &epos, &eloc, elen, 1);
if (!epos.bh) {
iinfo->i_lenAlloc += adsize;
mark_inode_dirty(table);
} else {
aed = (struct allocExtDesc *)epos.bh->b_data;
- aed->lengthAllocDescs =
- cpu_to_le32(le32_to_cpu(
- aed->lengthAllocDescs) + adsize);
+ le32_add_cpu(&aed->lengthAllocDescs, adsize);
udf_update_tag(epos.bh->b_data, epos.offset);
mark_buffer_dirty(epos.bh);
}
@@ -658,33 +572,30 @@ static void udf_table_free_blocks(struct super_block *sb,
brelse(oepos.bh);
error_return:
- sb->s_dirt = 1;
mutex_unlock(&sbi->s_alloc_mutex);
return;
}
static int udf_table_prealloc_blocks(struct super_block *sb,
- struct inode *inode,
struct inode *table, uint16_t partition,
uint32_t first_block, uint32_t block_count)
{
struct udf_sb_info *sbi = UDF_SB(sb);
int alloc_count = 0;
uint32_t elen, adsize;
- kernel_lb_addr eloc;
+ struct kernel_lb_addr eloc;
struct extent_position epos;
int8_t etype = -1;
struct udf_inode_info *iinfo;
- if (first_block < 0 ||
- first_block >= sbi->s_partmaps[partition].s_partition_len)
+ if (first_block >= sbi->s_partmaps[partition].s_partition_len)
return 0;
iinfo = UDF_I(table);
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
- adsize = sizeof(short_ad);
+ adsize = sizeof(struct short_ad);
else if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
- adsize = sizeof(long_ad);
+ adsize = sizeof(struct long_ad);
else
return 0;
@@ -705,14 +616,11 @@ static int udf_table_prealloc_blocks(struct super_block *sb,
epos.offset -= adsize;
alloc_count = (elen >> sb->s_blocksize_bits);
- if (inode && DQUOT_PREALLOC_BLOCK(inode,
- alloc_count > block_count ? block_count : alloc_count))
- alloc_count = 0;
- else if (alloc_count > block_count) {
+ if (alloc_count > block_count) {
alloc_count = block_count;
eloc.logicalBlockNum += alloc_count;
elen -= (alloc_count << sb->s_blocksize_bits);
- udf_write_aext(table, &epos, eloc,
+ udf_write_aext(table, &epos, &eloc,
(etype << 30) | elen, 1);
} else
udf_delete_aext(table, epos, eloc,
@@ -723,16 +631,13 @@ static int udf_table_prealloc_blocks(struct super_block *sb,
brelse(epos.bh);
- if (alloc_count && udf_add_free_space(sbi, partition, -alloc_count)) {
- mark_buffer_dirty(sbi->s_lvid_bh);
- sb->s_dirt = 1;
- }
+ if (alloc_count)
+ udf_add_free_space(sb, partition, -alloc_count);
mutex_unlock(&sbi->s_alloc_mutex);
return alloc_count;
}
static int udf_table_new_block(struct super_block *sb,
- struct inode *inode,
struct inode *table, uint16_t partition,
uint32_t goal, int *err)
{
@@ -740,7 +645,7 @@ static int udf_table_new_block(struct super_block *sb,
uint32_t spread = 0xFFFFFFFF, nspread = 0xFFFFFFFF;
uint32_t newblock = 0, adsize;
uint32_t elen, goal_elen = 0;
- kernel_lb_addr eloc, uninitialized_var(goal_eloc);
+ struct kernel_lb_addr eloc, uninitialized_var(goal_eloc);
struct extent_position epos, goal_epos;
int8_t etype;
struct udf_inode_info *iinfo = UDF_I(table);
@@ -748,14 +653,14 @@ static int udf_table_new_block(struct super_block *sb,
*err = -ENOSPC;
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
- adsize = sizeof(short_ad);
+ adsize = sizeof(struct short_ad);
else if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
- adsize = sizeof(long_ad);
+ adsize = sizeof(struct long_ad);
else
return newblock;
mutex_lock(&sbi->s_alloc_mutex);
- if (goal < 0 || goal >= sbi->s_partmaps[partition].s_partition_len)
+ if (goal >= sbi->s_partmaps[partition].s_partition_len)
goal = 0;
/* We search for the closest matching block to goal. If we find
@@ -811,54 +716,43 @@ static int udf_table_new_block(struct super_block *sb,
goal_eloc.logicalBlockNum++;
goal_elen -= sb->s_blocksize;
- if (inode && DQUOT_ALLOC_BLOCK(inode, 1)) {
- brelse(goal_epos.bh);
- mutex_unlock(&sbi->s_alloc_mutex);
- *err = -EDQUOT;
- return 0;
- }
-
if (goal_elen)
- udf_write_aext(table, &goal_epos, goal_eloc, goal_elen, 1);
+ udf_write_aext(table, &goal_epos, &goal_eloc, goal_elen, 1);
else
udf_delete_aext(table, goal_epos, goal_eloc, goal_elen);
brelse(goal_epos.bh);
- if (udf_add_free_space(sbi, partition, -1))
- mark_buffer_dirty(sbi->s_lvid_bh);
+ udf_add_free_space(sb, partition, -1);
- sb->s_dirt = 1;
mutex_unlock(&sbi->s_alloc_mutex);
*err = 0;
return newblock;
}
-inline void udf_free_blocks(struct super_block *sb,
- struct inode *inode,
- kernel_lb_addr bloc, uint32_t offset,
- uint32_t count)
+void udf_free_blocks(struct super_block *sb, struct inode *inode,
+ struct kernel_lb_addr *bloc, uint32_t offset,
+ uint32_t count)
{
- uint16_t partition = bloc.partitionReferenceNum;
+ uint16_t partition = bloc->partitionReferenceNum;
struct udf_part_map *map = &UDF_SB(sb)->s_partmaps[partition];
if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_BITMAP) {
- return udf_bitmap_free_blocks(sb, inode,
- map->s_uspace.s_bitmap,
- bloc, offset, count);
+ udf_bitmap_free_blocks(sb, map->s_uspace.s_bitmap,
+ bloc, offset, count);
} else if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_TABLE) {
- return udf_table_free_blocks(sb, inode,
- map->s_uspace.s_table,
- bloc, offset, count);
+ udf_table_free_blocks(sb, map->s_uspace.s_table,
+ bloc, offset, count);
} else if (map->s_partition_flags & UDF_PART_FLAG_FREED_BITMAP) {
- return udf_bitmap_free_blocks(sb, inode,
- map->s_fspace.s_bitmap,
- bloc, offset, count);
+ udf_bitmap_free_blocks(sb, map->s_fspace.s_bitmap,
+ bloc, offset, count);
} else if (map->s_partition_flags & UDF_PART_FLAG_FREED_TABLE) {
- return udf_table_free_blocks(sb, inode,
- map->s_fspace.s_table,
- bloc, offset, count);
- } else {
- return;
+ udf_table_free_blocks(sb, map->s_fspace.s_table,
+ bloc, offset, count);
+ }
+
+ if (inode) {
+ inode_sub_bytes(inode,
+ ((sector_t)count) << sb->s_blocksize_bits);
}
}
@@ -868,29 +762,34 @@ inline int udf_prealloc_blocks(struct super_block *sb,
uint32_t block_count)
{
struct udf_part_map *map = &UDF_SB(sb)->s_partmaps[partition];
+ sector_t allocated;
if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_BITMAP)
- return udf_bitmap_prealloc_blocks(sb, inode,
- map->s_uspace.s_bitmap,
- partition, first_block,
- block_count);
+ allocated = udf_bitmap_prealloc_blocks(sb,
+ map->s_uspace.s_bitmap,
+ partition, first_block,
+ block_count);
else if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_TABLE)
- return udf_table_prealloc_blocks(sb, inode,
- map->s_uspace.s_table,
- partition, first_block,
- block_count);
+ allocated = udf_table_prealloc_blocks(sb,
+ map->s_uspace.s_table,
+ partition, first_block,
+ block_count);
else if (map->s_partition_flags & UDF_PART_FLAG_FREED_BITMAP)
- return udf_bitmap_prealloc_blocks(sb, inode,
- map->s_fspace.s_bitmap,
- partition, first_block,
- block_count);
+ allocated = udf_bitmap_prealloc_blocks(sb,
+ map->s_fspace.s_bitmap,
+ partition, first_block,
+ block_count);
else if (map->s_partition_flags & UDF_PART_FLAG_FREED_TABLE)
- return udf_table_prealloc_blocks(sb, inode,
- map->s_fspace.s_table,
- partition, first_block,
- block_count);
+ allocated = udf_table_prealloc_blocks(sb,
+ map->s_fspace.s_table,
+ partition, first_block,
+ block_count);
else
return 0;
+
+ if (inode && allocated > 0)
+ inode_add_bytes(inode, allocated << sb->s_blocksize_bits);
+ return allocated;
}
inline int udf_new_block(struct super_block *sb,
@@ -898,25 +797,29 @@ inline int udf_new_block(struct super_block *sb,
uint16_t partition, uint32_t goal, int *err)
{
struct udf_part_map *map = &UDF_SB(sb)->s_partmaps[partition];
+ int block;
if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_BITMAP)
- return udf_bitmap_new_block(sb, inode,
- map->s_uspace.s_bitmap,
- partition, goal, err);
+ block = udf_bitmap_new_block(sb,
+ map->s_uspace.s_bitmap,
+ partition, goal, err);
else if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_TABLE)
- return udf_table_new_block(sb, inode,
- map->s_uspace.s_table,
- partition, goal, err);
- else if (map->s_partition_flags & UDF_PART_FLAG_FREED_BITMAP)
- return udf_bitmap_new_block(sb, inode,
- map->s_fspace.s_bitmap,
+ block = udf_table_new_block(sb,
+ map->s_uspace.s_table,
partition, goal, err);
+ else if (map->s_partition_flags & UDF_PART_FLAG_FREED_BITMAP)
+ block = udf_bitmap_new_block(sb,
+ map->s_fspace.s_bitmap,
+ partition, goal, err);
else if (map->s_partition_flags & UDF_PART_FLAG_FREED_TABLE)
- return udf_table_new_block(sb, inode,
- map->s_fspace.s_table,
- partition, goal, err);
+ block = udf_table_new_block(sb,
+ map->s_fspace.s_table,
+ partition, goal, err);
else {
*err = -EIO;
return 0;
}
+ if (inode && block)
+ inode_add_bytes(inode, sb->s_blocksize);
+ return block;
}
diff --git a/fs/udf/crc.c b/fs/udf/crc.c
deleted file mode 100644
index b1661296e78..00000000000
--- a/fs/udf/crc.c
+++ /dev/null
@@ -1,172 +0,0 @@
-/*
- * crc.c
- *
- * PURPOSE
- * Routines to generate, calculate, and test a 16-bit CRC.
- *
- * DESCRIPTION
- * The CRC code was devised by Don P. Mitchell of AT&T Bell Laboratories
- * and Ned W. Rhodes of Software Systems Group. It has been published in
- * "Design and Validation of Computer Protocols", Prentice Hall,
- * Englewood Cliffs, NJ, 1991, Chapter 3, ISBN 0-13-539925-4.
- *
- * Copyright is held by AT&T.
- *
- * AT&T gives permission for the free use of the CRC source code.
- *
- * COPYRIGHT
- * This file is distributed under the terms of the GNU General Public
- * License (GPL). Copies of the GPL can be obtained from:
- * ftp://prep.ai.mit.edu/pub/gnu/GPL
- * Each contributing author retains all rights to their own work.
- */
-
-#include "udfdecl.h"
-
-static uint16_t crc_table[256] = {
- 0x0000U, 0x1021U, 0x2042U, 0x3063U, 0x4084U, 0x50a5U, 0x60c6U, 0x70e7U,
- 0x8108U, 0x9129U, 0xa14aU, 0xb16bU, 0xc18cU, 0xd1adU, 0xe1ceU, 0xf1efU,
- 0x1231U, 0x0210U, 0x3273U, 0x2252U, 0x52b5U, 0x4294U, 0x72f7U, 0x62d6U,
- 0x9339U, 0x8318U, 0xb37bU, 0xa35aU, 0xd3bdU, 0xc39cU, 0xf3ffU, 0xe3deU,
- 0x2462U, 0x3443U, 0x0420U, 0x1401U, 0x64e6U, 0x74c7U, 0x44a4U, 0x5485U,
- 0xa56aU, 0xb54bU, 0x8528U, 0x9509U, 0xe5eeU, 0xf5cfU, 0xc5acU, 0xd58dU,
- 0x3653U, 0x2672U, 0x1611U, 0x0630U, 0x76d7U, 0x66f6U, 0x5695U, 0x46b4U,
- 0xb75bU, 0xa77aU, 0x9719U, 0x8738U, 0xf7dfU, 0xe7feU, 0xd79dU, 0xc7bcU,
- 0x48c4U, 0x58e5U, 0x6886U, 0x78a7U, 0x0840U, 0x1861U, 0x2802U, 0x3823U,
- 0xc9ccU, 0xd9edU, 0xe98eU, 0xf9afU, 0x8948U, 0x9969U, 0xa90aU, 0xb92bU,
- 0x5af5U, 0x4ad4U, 0x7ab7U, 0x6a96U, 0x1a71U, 0x0a50U, 0x3a33U, 0x2a12U,
- 0xdbfdU, 0xcbdcU, 0xfbbfU, 0xeb9eU, 0x9b79U, 0x8b58U, 0xbb3bU, 0xab1aU,
- 0x6ca6U, 0x7c87U, 0x4ce4U, 0x5cc5U, 0x2c22U, 0x3c03U, 0x0c60U, 0x1c41U,
- 0xedaeU, 0xfd8fU, 0xcdecU, 0xddcdU, 0xad2aU, 0xbd0bU, 0x8d68U, 0x9d49U,
- 0x7e97U, 0x6eb6U, 0x5ed5U, 0x4ef4U, 0x3e13U, 0x2e32U, 0x1e51U, 0x0e70U,
- 0xff9fU, 0xefbeU, 0xdfddU, 0xcffcU, 0xbf1bU, 0xaf3aU, 0x9f59U, 0x8f78U,
- 0x9188U, 0x81a9U, 0xb1caU, 0xa1ebU, 0xd10cU, 0xc12dU, 0xf14eU, 0xe16fU,
- 0x1080U, 0x00a1U, 0x30c2U, 0x20e3U, 0x5004U, 0x4025U, 0x7046U, 0x6067U,
- 0x83b9U, 0x9398U, 0xa3fbU, 0xb3daU, 0xc33dU, 0xd31cU, 0xe37fU, 0xf35eU,
- 0x02b1U, 0x1290U, 0x22f3U, 0x32d2U, 0x4235U, 0x5214U, 0x6277U, 0x7256U,
- 0xb5eaU, 0xa5cbU, 0x95a8U, 0x8589U, 0xf56eU, 0xe54fU, 0xd52cU, 0xc50dU,
- 0x34e2U, 0x24c3U, 0x14a0U, 0x0481U, 0x7466U, 0x6447U, 0x5424U, 0x4405U,
- 0xa7dbU, 0xb7faU, 0x8799U, 0x97b8U, 0xe75fU, 0xf77eU, 0xc71dU, 0xd73cU,
- 0x26d3U, 0x36f2U, 0x0691U, 0x16b0U, 0x6657U, 0x7676U, 0x4615U, 0x5634U,
- 0xd94cU, 0xc96dU, 0xf90eU, 0xe92fU, 0x99c8U, 0x89e9U, 0xb98aU, 0xa9abU,
- 0x5844U, 0x4865U, 0x7806U, 0x6827U, 0x18c0U, 0x08e1U, 0x3882U, 0x28a3U,
- 0xcb7dU, 0xdb5cU, 0xeb3fU, 0xfb1eU, 0x8bf9U, 0x9bd8U, 0xabbbU, 0xbb9aU,
- 0x4a75U, 0x5a54U, 0x6a37U, 0x7a16U, 0x0af1U, 0x1ad0U, 0x2ab3U, 0x3a92U,
- 0xfd2eU, 0xed0fU, 0xdd6cU, 0xcd4dU, 0xbdaaU, 0xad8bU, 0x9de8U, 0x8dc9U,
- 0x7c26U, 0x6c07U, 0x5c64U, 0x4c45U, 0x3ca2U, 0x2c83U, 0x1ce0U, 0x0cc1U,
- 0xef1fU, 0xff3eU, 0xcf5dU, 0xdf7cU, 0xaf9bU, 0xbfbaU, 0x8fd9U, 0x9ff8U,
- 0x6e17U, 0x7e36U, 0x4e55U, 0x5e74U, 0x2e93U, 0x3eb2U, 0x0ed1U, 0x1ef0U
-};
-
-/*
- * udf_crc
- *
- * PURPOSE
- * Calculate a 16-bit CRC checksum using ITU-T V.41 polynomial.
- *
- * DESCRIPTION
- * The OSTA-UDF(tm) 1.50 standard states that using CRCs is mandatory.
- * The polynomial used is: x^16 + x^12 + x^15 + 1
- *
- * PRE-CONDITIONS
- * data Pointer to the data block.
- * size Size of the data block.
- *
- * POST-CONDITIONS
- * <return> CRC of the data block.
- *
- * HISTORY
- * July 21, 1997 - Andrew E. Mileski
- * Adapted from OSTA-UDF(tm) 1.50 standard.
- */
-uint16_t udf_crc(uint8_t *data, uint32_t size, uint16_t crc)
-{
- while (size--)
- crc = crc_table[(crc >> 8 ^ *(data++)) & 0xffU] ^ (crc << 8);
-
- return crc;
-}
-
-/****************************************************************************/
-#if defined(TEST)
-
-/*
- * PURPOSE
- * Test udf_crc()
- *
- * HISTORY
- * July 21, 1997 - Andrew E. Mileski
- * Adapted from OSTA-UDF(tm) 1.50 standard.
- */
-
-unsigned char bytes[] = { 0x70U, 0x6AU, 0x77U };
-
-int main(void)
-{
- unsigned short x;
-
- x = udf_crc(bytes, sizeof bytes);
- printf("udf_crc: calculated = %4.4x, correct = %4.4x\n", x, 0x3299U);
-
- return 0;
-}
-
-#endif /* defined(TEST) */
-
-/****************************************************************************/
-#if defined(GENERATE)
-
-/*
- * PURPOSE
- * Generate a table for fast 16-bit CRC calculations (any polynomial).
- *
- * DESCRIPTION
- * The ITU-T V.41 polynomial is 010041.
- *
- * HISTORY
- * July 21, 1997 - Andrew E. Mileski
- * Adapted from OSTA-UDF(tm) 1.50 standard.
- */
-
-#include <stdio.h>
-
-int main(int argc, char **argv)
-{
- unsigned long crc, poly;
- int n, i;
-
- /* Get the polynomial */
- sscanf(argv[1], "%lo", &poly);
- if (poly & 0xffff0000U) {
- fprintf(stderr, "polynomial is too large\en");
- exit(1);
- }
-
- printf("/* CRC 0%o */\n", poly);
-
- /* Create a table */
- printf("static unsigned short crc_table[256] = {\n");
- for (n = 0; n < 256; n++) {
- if (n % 8 == 0)
- printf("\t");
- crc = n << 8;
- for (i = 0; i < 8; i++) {
- if (crc & 0x8000U)
- crc = (crc << 1) ^ poly;
- else
- crc <<= 1;
- crc &= 0xFFFFU;
- }
- if (n == 255)
- printf("0x%04xU ", crc);
- else
- printf("0x%04xU, ", crc);
- if (n % 8 == 7)
- printf("\n");
- }
- printf("};\n");
-
- return 0;
-}
-
-#endif /* defined(GENERATE) */
diff --git a/fs/udf/dir.c b/fs/udf/dir.c
index 8d8643ada19..a012c51caff 100644
--- a/fs/udf/dir.c
+++ b/fs/udf/dir.c
@@ -30,61 +30,74 @@
#include <linux/errno.h>
#include <linux/mm.h>
#include <linux/slab.h>
-#include <linux/smp_lock.h>
#include <linux/buffer_head.h>
#include "udf_i.h"
#include "udf_sb.h"
-static int do_udf_readdir(struct inode *dir, struct file *filp,
- filldir_t filldir, void *dirent)
+
+static int udf_readdir(struct file *file, struct dir_context *ctx)
{
- struct udf_fileident_bh fibh;
+ struct inode *dir = file_inode(file);
+ struct udf_inode_info *iinfo = UDF_I(dir);
+ struct udf_fileident_bh fibh = { .sbh = NULL, .ebh = NULL};
struct fileIdentDesc *fi = NULL;
struct fileIdentDesc cfi;
int block, iblock;
- loff_t nf_pos = (filp->f_pos - 1) << 2;
+ loff_t nf_pos;
int flen;
- char fname[UDF_NAME_LEN];
- char *nameptr;
+ unsigned char *fname = NULL;
+ unsigned char *nameptr;
uint16_t liu;
uint8_t lfi;
loff_t size = udf_ext0_offset(dir) + dir->i_size;
struct buffer_head *tmp, *bha[16];
- kernel_lb_addr eloc;
+ struct kernel_lb_addr eloc;
uint32_t elen;
sector_t offset;
- int i, num;
- unsigned int dt_type;
+ int i, num, ret = 0;
struct extent_position epos = { NULL, 0, {0, 0} };
- struct udf_inode_info *iinfo;
+ if (ctx->pos == 0) {
+ if (!dir_emit_dot(file, ctx))
+ return 0;
+ ctx->pos = 1;
+ }
+ nf_pos = (ctx->pos - 1) << 2;
if (nf_pos >= size)
- return 0;
+ goto out;
+
+ fname = kmalloc(UDF_NAME_LEN, GFP_NOFS);
+ if (!fname) {
+ ret = -ENOMEM;
+ goto out;
+ }
if (nf_pos == 0)
nf_pos = udf_ext0_offset(dir);
fibh.soffset = fibh.eoffset = nf_pos & (dir->i_sb->s_blocksize - 1);
- iinfo = UDF_I(dir);
- if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
- fibh.sbh = fibh.ebh = NULL;
- } else if (inode_bmap(dir, nf_pos >> dir->i_sb->s_blocksize_bits,
- &epos, &eloc, &elen, &offset) == (EXT_RECORDED_ALLOCATED >> 30)) {
- block = udf_get_lb_pblock(dir->i_sb, eloc, offset);
+ if (iinfo->i_alloc_type != ICBTAG_FLAG_AD_IN_ICB) {
+ if (inode_bmap(dir, nf_pos >> dir->i_sb->s_blocksize_bits,
+ &epos, &eloc, &elen, &offset)
+ != (EXT_RECORDED_ALLOCATED >> 30)) {
+ ret = -ENOENT;
+ goto out;
+ }
+ block = udf_get_lb_pblock(dir->i_sb, &eloc, offset);
if ((++offset << dir->i_sb->s_blocksize_bits) < elen) {
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
- epos.offset -= sizeof(short_ad);
+ epos.offset -= sizeof(struct short_ad);
else if (iinfo->i_alloc_type ==
ICBTAG_FLAG_AD_LONG)
- epos.offset -= sizeof(long_ad);
+ epos.offset -= sizeof(struct long_ad);
} else {
offset = 0;
}
if (!(fibh.sbh = fibh.ebh = udf_tread(dir->i_sb, block))) {
- brelse(epos.bh);
- return -EIO;
+ ret = -EIO;
+ goto out;
}
if (!(offset & ((16 >> (dir->i_sb->s_blocksize_bits - 9)) - 1))) {
@@ -92,7 +105,7 @@ static int do_udf_readdir(struct inode *dir, struct file *filp,
if (i + offset > (elen >> dir->i_sb->s_blocksize_bits))
i = (elen >> dir->i_sb->s_blocksize_bits) - offset;
for (num = 0; i > 0; i--) {
- block = udf_get_lb_pblock(dir->i_sb, eloc, offset + i);
+ block = udf_get_lb_pblock(dir->i_sb, &eloc, offset + i);
tmp = udf_tgetblk(dir->i_sb, block);
if (tmp && !buffer_uptodate(tmp) && !buffer_locked(tmp))
bha[num++] = tmp;
@@ -105,23 +118,17 @@ static int do_udf_readdir(struct inode *dir, struct file *filp,
brelse(bha[i]);
}
}
- } else {
- brelse(epos.bh);
- return -ENOENT;
}
while (nf_pos < size) {
- filp->f_pos = (nf_pos >> 2) + 1;
+ struct kernel_lb_addr tloc;
+
+ ctx->pos = (nf_pos >> 2) + 1;
fi = udf_fileident_read(dir, &nf_pos, &fibh, &cfi, &epos, &eloc,
&elen, &offset);
- if (!fi) {
- if (fibh.sbh != fibh.ebh)
- brelse(fibh.ebh);
- brelse(fibh.sbh);
- brelse(epos.bh);
- return 0;
- }
+ if (!fi)
+ goto out;
liu = le16_to_cpu(cfi.lengthOfImpUse);
lfi = cfi.lengthFileIdent;
@@ -155,89 +162,38 @@ static int do_udf_readdir(struct inode *dir, struct file *filp,
}
if (cfi.fileCharacteristics & FID_FILE_CHAR_PARENT) {
- iblock = parent_ino(filp->f_path.dentry);
- flen = 2;
- memcpy(fname, "..", flen);
- dt_type = DT_DIR;
- } else {
- kernel_lb_addr tloc = lelb_to_cpu(cfi.icb.extLocation);
-
- iblock = udf_get_lb_pblock(dir->i_sb, tloc, 0);
- flen = udf_get_filename(dir->i_sb, nameptr, fname, lfi);
- dt_type = DT_UNKNOWN;
+ if (!dir_emit_dotdot(file, ctx))
+ goto out;
+ continue;
}
- if (flen) {
- if (filldir(dirent, fname, flen, filp->f_pos, iblock, dt_type) < 0) {
- if (fibh.sbh != fibh.ebh)
- brelse(fibh.ebh);
- brelse(fibh.sbh);
- brelse(epos.bh);
- return 0;
- }
- }
+ flen = udf_get_filename(dir->i_sb, nameptr, fname, lfi);
+ if (!flen)
+ continue;
+
+ tloc = lelb_to_cpu(cfi.icb.extLocation);
+ iblock = udf_get_lb_pblock(dir->i_sb, &tloc, 0);
+ if (!dir_emit(ctx, fname, flen, iblock, DT_UNKNOWN))
+ goto out;
} /* end while */
- filp->f_pos = (nf_pos >> 2) + 1;
+ ctx->pos = (nf_pos >> 2) + 1;
+out:
if (fibh.sbh != fibh.ebh)
brelse(fibh.ebh);
brelse(fibh.sbh);
brelse(epos.bh);
+ kfree(fname);
- return 0;
-}
-
-/*
- * udf_readdir
- *
- * PURPOSE
- * Read a directory entry.
- *
- * DESCRIPTION
- * Optional - sys_getdents() will return -ENOTDIR if this routine is not
- * available.
- *
- * Refer to sys_getdents() in fs/readdir.c
- * sys_getdents() -> .
- *
- * PRE-CONDITIONS
- * filp Pointer to directory file.
- * buf Pointer to directory entry buffer.
- * filldir Pointer to filldir function.
- *
- * POST-CONDITIONS
- * <return> >=0 on success.
- *
- * HISTORY
- * July 1, 1997 - Andrew E. Mileski
- * Written, tested, and released.
- */
-
-static int udf_readdir(struct file *filp, void *dirent, filldir_t filldir)
-{
- struct inode *dir = filp->f_path.dentry->d_inode;
- int result;
-
- lock_kernel();
-
- if (filp->f_pos == 0) {
- if (filldir(dirent, ".", 1, filp->f_pos, dir->i_ino, DT_DIR) < 0) {
- unlock_kernel();
- return 0;
- }
- filp->f_pos++;
- }
-
- result = do_udf_readdir(dir, filp, filldir, dirent);
- unlock_kernel();
- return result;
+ return ret;
}
/* readdir and lookup functions */
const struct file_operations udf_dir_operations = {
+ .llseek = generic_file_llseek,
.read = generic_read_dir,
- .readdir = udf_readdir,
- .ioctl = udf_ioctl,
- .fsync = udf_fsync_file,
+ .iterate = udf_readdir,
+ .unlocked_ioctl = udf_ioctl,
+ .fsync = generic_file_fsync,
};
diff --git a/fs/udf/directory.c b/fs/udf/directory.c
index 2820f8fcf4c..3e44f575fb9 100644
--- a/fs/udf/directory.c
+++ b/fs/udf/directory.c
@@ -18,64 +18,11 @@
#include <linux/string.h>
#include <linux/buffer_head.h>
-#if 0
-static uint8_t *udf_filead_read(struct inode *dir, uint8_t *tmpad,
- uint8_t ad_size, kernel_lb_addr fe_loc,
- int *pos, int *offset, struct buffer_head **bh,
- int *error)
-{
- int loffset = *offset;
- int block;
- uint8_t *ad;
- int remainder;
-
- *error = 0;
-
- ad = (uint8_t *)(*bh)->b_data + *offset;
- *offset += ad_size;
-
- if (!ad) {
- brelse(*bh);
- *error = 1;
- return NULL;
- }
-
- if (*offset == dir->i_sb->s_blocksize) {
- brelse(*bh);
- block = udf_get_lb_pblock(dir->i_sb, fe_loc, ++*pos);
- if (!block)
- return NULL;
- *bh = udf_tread(dir->i_sb, block);
- if (!*bh)
- return NULL;
- } else if (*offset > dir->i_sb->s_blocksize) {
- ad = tmpad;
-
- remainder = dir->i_sb->s_blocksize - loffset;
- memcpy((uint8_t *)ad, (*bh)->b_data + loffset, remainder);
-
- brelse(*bh);
- block = udf_get_lb_pblock(dir->i_sb, fe_loc, ++*pos);
- if (!block)
- return NULL;
- (*bh) = udf_tread(dir->i_sb, block);
- if (!*bh)
- return NULL;
-
- memcpy((uint8_t *)ad + remainder, (*bh)->b_data,
- ad_size - remainder);
- *offset = ad_size - remainder;
- }
-
- return ad;
-}
-#endif
-
struct fileIdentDesc *udf_fileident_read(struct inode *dir, loff_t *nf_pos,
struct udf_fileident_bh *fibh,
struct fileIdentDesc *cfi,
struct extent_position *epos,
- kernel_lb_addr *eloc, uint32_t *elen,
+ struct kernel_lb_addr *eloc, uint32_t *elen,
sector_t *offset)
{
struct fileIdentDesc *fi;
@@ -111,7 +58,7 @@ struct fileIdentDesc *udf_fileident_read(struct inode *dir, loff_t *nf_pos,
(EXT_RECORDED_ALLOCATED >> 30))
return NULL;
- block = udf_get_lb_pblock(dir->i_sb, *eloc, *offset);
+ block = udf_get_lb_pblock(dir->i_sb, eloc, *offset);
(*offset)++;
@@ -131,7 +78,7 @@ struct fileIdentDesc *udf_fileident_read(struct inode *dir, loff_t *nf_pos,
if (i + *offset > (*elen >> blocksize_bits))
i = (*elen >> blocksize_bits)-*offset;
for (num = 0; i > 0; i--) {
- block = udf_get_lb_pblock(dir->i_sb, *eloc,
+ block = udf_get_lb_pblock(dir->i_sb, eloc,
*offset + i);
tmp = udf_tgetblk(dir->i_sb, block);
if (tmp && !buffer_uptodate(tmp) &&
@@ -169,7 +116,7 @@ struct fileIdentDesc *udf_fileident_read(struct inode *dir, loff_t *nf_pos,
(EXT_RECORDED_ALLOCATED >> 30))
return NULL;
- block = udf_get_lb_pblock(dir->i_sb, *eloc, *offset);
+ block = udf_get_lb_pblock(dir->i_sb, eloc, *offset);
(*offset)++;
@@ -215,8 +162,8 @@ struct fileIdentDesc *udf_get_fileident(void *buffer, int bufsize, int *offset)
int padlen;
if ((!buffer) || (!offset)) {
- udf_debug("invalidparms\n, buffer=%p, offset=%p\n", buffer,
- offset);
+ udf_debug("invalidparms, buffer=%p, offset=%p\n",
+ buffer, offset);
return NULL;
}
@@ -248,80 +195,47 @@ struct fileIdentDesc *udf_get_fileident(void *buffer, int bufsize, int *offset)
return fi;
}
-#if 0
-static extent_ad *udf_get_fileextent(void *buffer, int bufsize, int *offset)
-{
- extent_ad *ext;
- struct fileEntry *fe;
- uint8_t *ptr;
-
- if ((!buffer) || (!offset)) {
- printk(KERN_ERR "udf: udf_get_fileextent() invalidparms\n");
- return NULL;
- }
-
- fe = (struct fileEntry *)buffer;
-
- if (fe->descTag.tagIdent != cpu_to_le16(TAG_IDENT_FE)) {
- udf_debug("0x%x != TAG_IDENT_FE\n",
- le16_to_cpu(fe->descTag.tagIdent));
- return NULL;
- }
-
- ptr = (uint8_t *)(fe->extendedAttr) +
- le32_to_cpu(fe->lengthExtendedAttr);
-
- if ((*offset > 0) && (*offset < le32_to_cpu(fe->lengthAllocDescs)))
- ptr += *offset;
-
- ext = (extent_ad *)ptr;
-
- *offset = *offset + sizeof(extent_ad);
- return ext;
-}
-#endif
-
-short_ad *udf_get_fileshortad(uint8_t *ptr, int maxoffset, uint32_t *offset,
+struct short_ad *udf_get_fileshortad(uint8_t *ptr, int maxoffset, uint32_t *offset,
int inc)
{
- short_ad *sa;
+ struct short_ad *sa;
if ((!ptr) || (!offset)) {
- printk(KERN_ERR "udf: udf_get_fileshortad() invalidparms\n");
+ pr_err("%s: invalidparms\n", __func__);
return NULL;
}
- if ((*offset + sizeof(short_ad)) > maxoffset)
+ if ((*offset + sizeof(struct short_ad)) > maxoffset)
return NULL;
else {
- sa = (short_ad *)ptr;
+ sa = (struct short_ad *)ptr;
if (sa->extLength == 0)
return NULL;
}
if (inc)
- *offset += sizeof(short_ad);
+ *offset += sizeof(struct short_ad);
return sa;
}
-long_ad *udf_get_filelongad(uint8_t *ptr, int maxoffset, uint32_t *offset, int inc)
+struct long_ad *udf_get_filelongad(uint8_t *ptr, int maxoffset, uint32_t *offset, int inc)
{
- long_ad *la;
+ struct long_ad *la;
if ((!ptr) || (!offset)) {
- printk(KERN_ERR "udf: udf_get_filelongad() invalidparms\n");
+ pr_err("%s: invalidparms\n", __func__);
return NULL;
}
- if ((*offset + sizeof(long_ad)) > maxoffset)
+ if ((*offset + sizeof(struct long_ad)) > maxoffset)
return NULL;
else {
- la = (long_ad *)ptr;
+ la = (struct long_ad *)ptr;
if (la->extLength == 0)
return NULL;
}
if (inc)
- *offset += sizeof(long_ad);
+ *offset += sizeof(struct long_ad);
return la;
}
diff --git a/fs/udf/ecma_167.h b/fs/udf/ecma_167.h
index 56387711589..4792b771aa8 100644
--- a/fs/udf/ecma_167.h
+++ b/fs/udf/ecma_167.h
@@ -38,10 +38,10 @@
#define _ECMA_167_H 1
/* Character set specification (ECMA 167r3 1/7.2.1) */
-typedef struct {
+struct charspec {
uint8_t charSetType;
uint8_t charSetInfo[63];
-} __attribute__ ((packed)) charspec;
+} __attribute__ ((packed));
/* Character Set Type (ECMA 167r3 1/7.2.1.1) */
#define CHARSPEC_TYPE_CS0 0x00 /* (1/7.2.2) */
@@ -57,7 +57,7 @@ typedef struct {
typedef uint8_t dstring;
/* Timestamp (ECMA 167r3 1/7.3) */
-typedef struct {
+struct timestamp {
__le16 typeAndTimezone;
__le16 year;
uint8_t month;
@@ -68,20 +68,7 @@ typedef struct {
uint8_t centiseconds;
uint8_t hundredsOfMicroseconds;
uint8_t microseconds;
-} __attribute__ ((packed)) timestamp;
-
-typedef struct {
- uint16_t typeAndTimezone;
- int16_t year;
- uint8_t month;
- uint8_t day;
- uint8_t hour;
- uint8_t minute;
- uint8_t second;
- uint8_t centiseconds;
- uint8_t hundredsOfMicroseconds;
- uint8_t microseconds;
-} __attribute__ ((packed)) kernel_timestamp;
+} __attribute__ ((packed));
/* Type and Time Zone (ECMA 167r3 1/7.3.1) */
#define TIMESTAMP_TYPE_MASK 0xF000
@@ -91,11 +78,11 @@ typedef struct {
#define TIMESTAMP_TIMEZONE_MASK 0x0FFF
/* Entity identifier (ECMA 167r3 1/7.4) */
-typedef struct {
+struct regid {
uint8_t flags;
uint8_t ident[23];
uint8_t identSuffix[8];
-} __attribute__ ((packed)) regid;
+} __attribute__ ((packed));
/* Flags (ECMA 167r3 1/7.4.1) */
#define ENTITYID_FLAGS_DIRTY 0x00
@@ -139,38 +126,38 @@ struct terminatingExtendedAreaDesc {
/* Boot Descriptor (ECMA 167r3 2/9.4) */
struct bootDesc {
- uint8_t structType;
- uint8_t stdIdent[VSD_STD_ID_LEN];
- uint8_t structVersion;
- uint8_t reserved1;
- regid archType;
- regid bootIdent;
- __le32 bootExtLocation;
- __le32 bootExtLength;
- __le64 loadAddress;
- __le64 startAddress;
- timestamp descCreationDateAndTime;
- __le16 flags;
- uint8_t reserved2[32];
- uint8_t bootUse[1906];
+ uint8_t structType;
+ uint8_t stdIdent[VSD_STD_ID_LEN];
+ uint8_t structVersion;
+ uint8_t reserved1;
+ struct regid archType;
+ struct regid bootIdent;
+ __le32 bootExtLocation;
+ __le32 bootExtLength;
+ __le64 loadAddress;
+ __le64 startAddress;
+ struct timestamp descCreationDateAndTime;
+ __le16 flags;
+ uint8_t reserved2[32];
+ uint8_t bootUse[1906];
} __attribute__ ((packed));
/* Flags (ECMA 167r3 2/9.4.12) */
#define BOOT_FLAGS_ERASE 0x01
/* Extent Descriptor (ECMA 167r3 3/7.1) */
-typedef struct {
+struct extent_ad {
__le32 extLength;
__le32 extLocation;
-} __attribute__ ((packed)) extent_ad;
+} __attribute__ ((packed));
-typedef struct {
+struct kernel_extent_ad {
uint32_t extLength;
uint32_t extLocation;
-} kernel_extent_ad;
+};
/* Descriptor Tag (ECMA 167r3 3/7.2) */
-typedef struct {
+struct tag {
__le16 tagIdent;
__le16 descVersion;
uint8_t tagChecksum;
@@ -179,7 +166,7 @@ typedef struct {
__le16 descCRC;
__le16 descCRCLength;
__le32 tagLocation;
-} __attribute__ ((packed)) tag;
+} __attribute__ ((packed));
/* Tag Identifier (ECMA 167r3 3/7.2.1) */
#define TAG_IDENT_PVD 0x0001
@@ -203,28 +190,28 @@ struct NSRDesc {
/* Primary Volume Descriptor (ECMA 167r3 3/10.1) */
struct primaryVolDesc {
- tag descTag;
- __le32 volDescSeqNum;
- __le32 primaryVolDescNum;
- dstring volIdent[32];
- __le16 volSeqNum;
- __le16 maxVolSeqNum;
- __le16 interchangeLvl;
- __le16 maxInterchangeLvl;
- __le32 charSetList;
- __le32 maxCharSetList;
- dstring volSetIdent[128];
- charspec descCharSet;
- charspec explanatoryCharSet;
- extent_ad volAbstract;
- extent_ad volCopyright;
- regid appIdent;
- timestamp recordingDateAndTime;
- regid impIdent;
- uint8_t impUse[64];
- __le32 predecessorVolDescSeqLocation;
- __le16 flags;
- uint8_t reserved[22];
+ struct tag descTag;
+ __le32 volDescSeqNum;
+ __le32 primaryVolDescNum;
+ dstring volIdent[32];
+ __le16 volSeqNum;
+ __le16 maxVolSeqNum;
+ __le16 interchangeLvl;
+ __le16 maxInterchangeLvl;
+ __le32 charSetList;
+ __le32 maxCharSetList;
+ dstring volSetIdent[128];
+ struct charspec descCharSet;
+ struct charspec explanatoryCharSet;
+ struct extent_ad volAbstract;
+ struct extent_ad volCopyright;
+ struct regid appIdent;
+ struct timestamp recordingDateAndTime;
+ struct regid impIdent;
+ uint8_t impUse[64];
+ __le32 predecessorVolDescSeqLocation;
+ __le16 flags;
+ uint8_t reserved[22];
} __attribute__ ((packed));
/* Flags (ECMA 167r3 3/10.1.21) */
@@ -232,40 +219,40 @@ struct primaryVolDesc {
/* Anchor Volume Descriptor Pointer (ECMA 167r3 3/10.2) */
struct anchorVolDescPtr {
- tag descTag;
- extent_ad mainVolDescSeqExt;
- extent_ad reserveVolDescSeqExt;
- uint8_t reserved[480];
+ struct tag descTag;
+ struct extent_ad mainVolDescSeqExt;
+ struct extent_ad reserveVolDescSeqExt;
+ uint8_t reserved[480];
} __attribute__ ((packed));
/* Volume Descriptor Pointer (ECMA 167r3 3/10.3) */
struct volDescPtr {
- tag descTag;
- __le32 volDescSeqNum;
- extent_ad nextVolDescSeqExt;
- uint8_t reserved[484];
+ struct tag descTag;
+ __le32 volDescSeqNum;
+ struct extent_ad nextVolDescSeqExt;
+ uint8_t reserved[484];
} __attribute__ ((packed));
/* Implementation Use Volume Descriptor (ECMA 167r3 3/10.4) */
struct impUseVolDesc {
- tag descTag;
+ struct tag descTag;
__le32 volDescSeqNum;
- regid impIdent;
+ struct regid impIdent;
uint8_t impUse[460];
} __attribute__ ((packed));
/* Partition Descriptor (ECMA 167r3 3/10.5) */
struct partitionDesc {
- tag descTag;
+ struct tag descTag;
__le32 volDescSeqNum;
__le16 partitionFlags;
__le16 partitionNumber;
- regid partitionContents;
+ struct regid partitionContents;
uint8_t partitionContentsUse[128];
__le32 accessType;
__le32 partitionStartingLocation;
__le32 partitionLength;
- regid impIdent;
+ struct regid impIdent;
uint8_t impUse[128];
uint8_t reserved[156];
} __attribute__ ((packed));
@@ -291,19 +278,19 @@ struct partitionDesc {
/* Logical Volume Descriptor (ECMA 167r3 3/10.6) */
struct logicalVolDesc {
- tag descTag;
- __le32 volDescSeqNum;
- charspec descCharSet;
- dstring logicalVolIdent[128];
- __le32 logicalBlockSize;
- regid domainIdent;
- uint8_t logicalVolContentsUse[16];
- __le32 mapTableLength;
- __le32 numPartitionMaps;
- regid impIdent;
- uint8_t impUse[128];
- extent_ad integritySeqExt;
- uint8_t partitionMaps[0];
+ struct tag descTag;
+ __le32 volDescSeqNum;
+ struct charspec descCharSet;
+ dstring logicalVolIdent[128];
+ __le32 logicalBlockSize;
+ struct regid domainIdent;
+ uint8_t logicalVolContentsUse[16];
+ __le32 mapTableLength;
+ __le32 numPartitionMaps;
+ struct regid impIdent;
+ uint8_t impUse[128];
+ struct extent_ad integritySeqExt;
+ uint8_t partitionMaps[0];
} __attribute__ ((packed));
/* Generic Partition Map (ECMA 167r3 3/10.7.1) */
@@ -335,30 +322,30 @@ struct genericPartitionMap2 {
/* Unallocated Space Descriptor (ECMA 167r3 3/10.8) */
struct unallocSpaceDesc {
- tag descTag;
- __le32 volDescSeqNum;
- __le32 numAllocDescs;
- extent_ad allocDescs[0];
+ struct tag descTag;
+ __le32 volDescSeqNum;
+ __le32 numAllocDescs;
+ struct extent_ad allocDescs[0];
} __attribute__ ((packed));
/* Terminating Descriptor (ECMA 167r3 3/10.9) */
struct terminatingDesc {
- tag descTag;
+ struct tag descTag;
uint8_t reserved[496];
} __attribute__ ((packed));
/* Logical Volume Integrity Descriptor (ECMA 167r3 3/10.10) */
struct logicalVolIntegrityDesc {
- tag descTag;
- timestamp recordingDateAndTime;
- __le32 integrityType;
- extent_ad nextIntegrityExt;
- uint8_t logicalVolContentsUse[32];
- __le32 numOfPartitions;
- __le32 lengthOfImpUse;
- __le32 freeSpaceTable[0];
- __le32 sizeTable[0];
- uint8_t impUse[0];
+ struct tag descTag;
+ struct timestamp recordingDateAndTime;
+ __le32 integrityType;
+ struct extent_ad nextIntegrityExt;
+ uint8_t logicalVolContentsUse[32];
+ __le32 numOfPartitions;
+ __le32 lengthOfImpUse;
+ __le32 freeSpaceTable[0];
+ __le32 sizeTable[0];
+ uint8_t impUse[0];
} __attribute__ ((packed));
/* Integrity Type (ECMA 167r3 3/10.10.3) */
@@ -366,50 +353,50 @@ struct logicalVolIntegrityDesc {
#define LVID_INTEGRITY_TYPE_CLOSE 0x00000001
/* Recorded Address (ECMA 167r3 4/7.1) */
-typedef struct {
+struct lb_addr {
__le32 logicalBlockNum;
__le16 partitionReferenceNum;
-} __attribute__ ((packed)) lb_addr;
+} __attribute__ ((packed));
/* ... and its in-core analog */
-typedef struct {
+struct kernel_lb_addr {
uint32_t logicalBlockNum;
uint16_t partitionReferenceNum;
-} kernel_lb_addr;
+};
/* Short Allocation Descriptor (ECMA 167r3 4/14.14.1) */
-typedef struct {
+struct short_ad {
__le32 extLength;
__le32 extPosition;
-} __attribute__ ((packed)) short_ad;
+} __attribute__ ((packed));
/* Long Allocation Descriptor (ECMA 167r3 4/14.14.2) */
-typedef struct {
+struct long_ad {
__le32 extLength;
- lb_addr extLocation;
+ struct lb_addr extLocation;
uint8_t impUse[6];
-} __attribute__ ((packed)) long_ad;
+} __attribute__ ((packed));
-typedef struct {
- uint32_t extLength;
- kernel_lb_addr extLocation;
- uint8_t impUse[6];
-} kernel_long_ad;
+struct kernel_long_ad {
+ uint32_t extLength;
+ struct kernel_lb_addr extLocation;
+ uint8_t impUse[6];
+};
/* Extended Allocation Descriptor (ECMA 167r3 4/14.14.3) */
-typedef struct {
+struct ext_ad {
__le32 extLength;
__le32 recordedLength;
__le32 informationLength;
- lb_addr extLocation;
-} __attribute__ ((packed)) ext_ad;
+ struct lb_addr extLocation;
+} __attribute__ ((packed));
-typedef struct {
- uint32_t extLength;
- uint32_t recordedLength;
- uint32_t informationLength;
- kernel_lb_addr extLocation;
-} kernel_ext_ad;
+struct kernel_ext_ad {
+ uint32_t extLength;
+ uint32_t recordedLength;
+ uint32_t informationLength;
+ struct kernel_lb_addr extLocation;
+};
/* Descriptor Tag (ECMA 167r3 4/7.2 - See 3/7.2) */
@@ -428,44 +415,44 @@ typedef struct {
/* File Set Descriptor (ECMA 167r3 4/14.1) */
struct fileSetDesc {
- tag descTag;
- timestamp recordingDateAndTime;
- __le16 interchangeLvl;
- __le16 maxInterchangeLvl;
- __le32 charSetList;
- __le32 maxCharSetList;
- __le32 fileSetNum;
- __le32 fileSetDescNum;
- charspec logicalVolIdentCharSet;
- dstring logicalVolIdent[128];
- charspec fileSetCharSet;
- dstring fileSetIdent[32];
- dstring copyrightFileIdent[32];
- dstring abstractFileIdent[32];
- long_ad rootDirectoryICB;
- regid domainIdent;
- long_ad nextExt;
- long_ad streamDirectoryICB;
- uint8_t reserved[32];
+ struct tag descTag;
+ struct timestamp recordingDateAndTime;
+ __le16 interchangeLvl;
+ __le16 maxInterchangeLvl;
+ __le32 charSetList;
+ __le32 maxCharSetList;
+ __le32 fileSetNum;
+ __le32 fileSetDescNum;
+ struct charspec logicalVolIdentCharSet;
+ dstring logicalVolIdent[128];
+ struct charspec fileSetCharSet;
+ dstring fileSetIdent[32];
+ dstring copyrightFileIdent[32];
+ dstring abstractFileIdent[32];
+ struct long_ad rootDirectoryICB;
+ struct regid domainIdent;
+ struct long_ad nextExt;
+ struct long_ad streamDirectoryICB;
+ uint8_t reserved[32];
} __attribute__ ((packed));
/* Partition Header Descriptor (ECMA 167r3 4/14.3) */
struct partitionHeaderDesc {
- short_ad unallocSpaceTable;
- short_ad unallocSpaceBitmap;
- short_ad partitionIntegrityTable;
- short_ad freedSpaceTable;
- short_ad freedSpaceBitmap;
+ struct short_ad unallocSpaceTable;
+ struct short_ad unallocSpaceBitmap;
+ struct short_ad partitionIntegrityTable;
+ struct short_ad freedSpaceTable;
+ struct short_ad freedSpaceBitmap;
uint8_t reserved[88];
} __attribute__ ((packed));
/* File Identifier Descriptor (ECMA 167r3 4/14.4) */
struct fileIdentDesc {
- tag descTag;
+ struct tag descTag;
__le16 fileVersionNum;
uint8_t fileCharacteristics;
uint8_t lengthFileIdent;
- long_ad icb;
+ struct long_ad icb;
__le16 lengthOfImpUse;
uint8_t impUse[0];
uint8_t fileIdent[0];
@@ -481,22 +468,22 @@ struct fileIdentDesc {
/* Allocation Ext Descriptor (ECMA 167r3 4/14.5) */
struct allocExtDesc {
- tag descTag;
+ struct tag descTag;
__le32 previousAllocExtLocation;
__le32 lengthAllocDescs;
} __attribute__ ((packed));
/* ICB Tag (ECMA 167r3 4/14.6) */
-typedef struct {
+struct icbtag {
__le32 priorRecordedNumDirectEntries;
__le16 strategyType;
__le16 strategyParameter;
__le16 numEntries;
uint8_t reserved;
uint8_t fileType;
- lb_addr parentICBLocation;
+ struct lb_addr parentICBLocation;
__le16 flags;
-} __attribute__ ((packed)) icbtag;
+} __attribute__ ((packed));
/* Strategy Type (ECMA 167r3 4/14.6.2) */
#define ICBTAG_STRATEGY_TYPE_UNDEF 0x0000
@@ -541,41 +528,41 @@ typedef struct {
/* Indirect Entry (ECMA 167r3 4/14.7) */
struct indirectEntry {
- tag descTag;
- icbtag icbTag;
- long_ad indirectICB;
+ struct tag descTag;
+ struct icbtag icbTag;
+ struct long_ad indirectICB;
} __attribute__ ((packed));
/* Terminal Entry (ECMA 167r3 4/14.8) */
struct terminalEntry {
- tag descTag;
- icbtag icbTag;
+ struct tag descTag;
+ struct icbtag icbTag;
} __attribute__ ((packed));
/* File Entry (ECMA 167r3 4/14.9) */
struct fileEntry {
- tag descTag;
- icbtag icbTag;
- __le32 uid;
- __le32 gid;
- __le32 permissions;
- __le16 fileLinkCount;
- uint8_t recordFormat;
- uint8_t recordDisplayAttr;
- __le32 recordLength;
- __le64 informationLength;
- __le64 logicalBlocksRecorded;
- timestamp accessTime;
- timestamp modificationTime;
- timestamp attrTime;
- __le32 checkpoint;
- long_ad extendedAttrICB;
- regid impIdent;
- __le64 uniqueID;
- __le32 lengthExtendedAttr;
- __le32 lengthAllocDescs;
- uint8_t extendedAttr[0];
- uint8_t allocDescs[0];
+ struct tag descTag;
+ struct icbtag icbTag;
+ __le32 uid;
+ __le32 gid;
+ __le32 permissions;
+ __le16 fileLinkCount;
+ uint8_t recordFormat;
+ uint8_t recordDisplayAttr;
+ __le32 recordLength;
+ __le64 informationLength;
+ __le64 logicalBlocksRecorded;
+ struct timestamp accessTime;
+ struct timestamp modificationTime;
+ struct timestamp attrTime;
+ __le32 checkpoint;
+ struct long_ad extendedAttrICB;
+ struct regid impIdent;
+ __le64 uniqueID;
+ __le32 lengthExtendedAttr;
+ __le32 lengthAllocDescs;
+ uint8_t extendedAttr[0];
+ uint8_t allocDescs[0];
} __attribute__ ((packed));
/* Permissions (ECMA 167r3 4/14.9.5) */
@@ -617,7 +604,7 @@ struct fileEntry {
/* Extended Attribute Header Descriptor (ECMA 167r3 4/14.10.1) */
struct extendedAttrHeaderDesc {
- tag descTag;
+ struct tag descTag;
__le32 impAttrLocation;
__le32 appAttrLocation;
} __attribute__ ((packed));
@@ -700,7 +687,7 @@ struct impUseExtAttr {
uint8_t reserved[3];
__le32 attrLength;
__le32 impUseLength;
- regid impIdent;
+ struct regid impIdent;
uint8_t impUse[0];
} __attribute__ ((packed));
@@ -711,7 +698,7 @@ struct appUseExtAttr {
uint8_t reserved[3];
__le32 attrLength;
__le32 appUseLength;
- regid appIdent;
+ struct regid appIdent;
uint8_t appUse[0];
} __attribute__ ((packed));
@@ -725,15 +712,15 @@ struct appUseExtAttr {
/* Unallocated Space Entry (ECMA 167r3 4/14.11) */
struct unallocSpaceEntry {
- tag descTag;
- icbtag icbTag;
+ struct tag descTag;
+ struct icbtag icbTag;
__le32 lengthAllocDescs;
uint8_t allocDescs[0];
} __attribute__ ((packed));
/* Space Bitmap Descriptor (ECMA 167r3 4/14.12) */
struct spaceBitmapDesc {
- tag descTag;
+ struct tag descTag;
__le32 numOfBits;
__le32 numOfBytes;
uint8_t bitmap[0];
@@ -741,13 +728,13 @@ struct spaceBitmapDesc {
/* Partition Integrity Entry (ECMA 167r3 4/14.13) */
struct partitionIntegrityEntry {
- tag descTag;
- icbtag icbTag;
- timestamp recordingDateAndTime;
- uint8_t integrityType;
- uint8_t reserved[175];
- regid impIdent;
- uint8_t impUse[256];
+ struct tag descTag;
+ struct icbtag icbTag;
+ struct timestamp recordingDateAndTime;
+ uint8_t integrityType;
+ uint8_t reserved[175];
+ struct regid impIdent;
+ uint8_t impUse[256];
} __attribute__ ((packed));
/* Short Allocation Descriptor (ECMA 167r3 4/14.14.1) */
@@ -778,32 +765,32 @@ struct pathComponent {
/* File Entry (ECMA 167r3 4/14.17) */
struct extendedFileEntry {
- tag descTag;
- icbtag icbTag;
- __le32 uid;
- __le32 gid;
- __le32 permissions;
- __le16 fileLinkCount;
- uint8_t recordFormat;
- uint8_t recordDisplayAttr;
- __le32 recordLength;
- __le64 informationLength;
- __le64 objectSize;
- __le64 logicalBlocksRecorded;
- timestamp accessTime;
- timestamp modificationTime;
- timestamp createTime;
- timestamp attrTime;
- __le32 checkpoint;
- __le32 reserved;
- long_ad extendedAttrICB;
- long_ad streamDirectoryICB;
- regid impIdent;
- __le64 uniqueID;
- __le32 lengthExtendedAttr;
- __le32 lengthAllocDescs;
- uint8_t extendedAttr[0];
- uint8_t allocDescs[0];
+ struct tag descTag;
+ struct icbtag icbTag;
+ __le32 uid;
+ __le32 gid;
+ __le32 permissions;
+ __le16 fileLinkCount;
+ uint8_t recordFormat;
+ uint8_t recordDisplayAttr;
+ __le32 recordLength;
+ __le64 informationLength;
+ __le64 objectSize;
+ __le64 logicalBlocksRecorded;
+ struct timestamp accessTime;
+ struct timestamp modificationTime;
+ struct timestamp createTime;
+ struct timestamp attrTime;
+ __le32 checkpoint;
+ __le32 reserved;
+ struct long_ad extendedAttrICB;
+ struct long_ad streamDirectoryICB;
+ struct regid impIdent;
+ __le64 uniqueID;
+ __le32 lengthExtendedAttr;
+ __le32 lengthAllocDescs;
+ uint8_t extendedAttr[0];
+ uint8_t allocDescs[0];
} __attribute__ ((packed));
#endif /* _ECMA_167_H */
diff --git a/fs/udf/file.c b/fs/udf/file.c
index 97c71ae7c68..d80738fdf42 100644
--- a/fs/udf/file.c
+++ b/fs/udf/file.c
@@ -27,13 +27,11 @@
#include "udfdecl.h"
#include <linux/fs.h>
-#include <linux/udf_fs.h>
#include <asm/uaccess.h>
#include <linux/kernel.h>
#include <linux/string.h> /* memset */
#include <linux/capability.h>
#include <linux/errno.h>
-#include <linux/smp_lock.h>
#include <linux/pagemap.h>
#include <linux/buffer_head.h>
#include <linux/aio.h>
@@ -41,20 +39,24 @@
#include "udf_i.h"
#include "udf_sb.h"
-static int udf_adinicb_readpage(struct file *file, struct page *page)
+static void __udf_adinicb_readpage(struct page *page)
{
struct inode *inode = page->mapping->host;
char *kaddr;
struct udf_inode_info *iinfo = UDF_I(inode);
- BUG_ON(!PageLocked(page));
-
kaddr = kmap(page);
- memset(kaddr, 0, PAGE_CACHE_SIZE);
memcpy(kaddr, iinfo->i_ext.i_data + iinfo->i_lenEAttr, inode->i_size);
+ memset(kaddr + inode->i_size, 0, PAGE_CACHE_SIZE - inode->i_size);
flush_dcache_page(page);
SetPageUptodate(page);
kunmap(page);
+}
+
+static int udf_adinicb_readpage(struct file *file, struct page *page)
+{
+ BUG_ON(!PageLocked(page));
+ __udf_adinicb_readpage(page);
unlock_page(page);
return 0;
@@ -79,6 +81,25 @@ static int udf_adinicb_writepage(struct page *page,
return 0;
}
+static int udf_adinicb_write_begin(struct file *file,
+ struct address_space *mapping, loff_t pos,
+ unsigned len, unsigned flags, struct page **pagep,
+ void **fsdata)
+{
+ struct page *page;
+
+ if (WARN_ON_ONCE(pos >= PAGE_CACHE_SIZE))
+ return -EIO;
+ page = grab_cache_page_write_begin(mapping, 0, flags);
+ if (!page)
+ return -ENOMEM;
+ *pagep = page;
+
+ if (!PageUptodate(page) && len != PAGE_CACHE_SIZE)
+ __udf_adinicb_readpage(page);
+ return 0;
+}
+
static int udf_adinicb_write_end(struct file *file,
struct address_space *mapping,
loff_t pos, unsigned len, unsigned copied,
@@ -89,43 +110,53 @@ static int udf_adinicb_write_end(struct file *file,
char *kaddr;
struct udf_inode_info *iinfo = UDF_I(inode);
- kaddr = kmap_atomic(page, KM_USER0);
+ kaddr = kmap_atomic(page);
memcpy(iinfo->i_ext.i_data + iinfo->i_lenEAttr + offset,
kaddr + offset, copied);
- kunmap_atomic(kaddr, KM_USER0);
+ kunmap_atomic(kaddr);
return simple_write_end(file, mapping, pos, len, copied, page, fsdata);
}
+static ssize_t udf_adinicb_direct_IO(int rw, struct kiocb *iocb,
+ struct iov_iter *iter,
+ loff_t offset)
+{
+ /* Fallback to buffered I/O. */
+ return 0;
+}
+
const struct address_space_operations udf_adinicb_aops = {
.readpage = udf_adinicb_readpage,
.writepage = udf_adinicb_writepage,
- .sync_page = block_sync_page,
- .write_begin = simple_write_begin,
- .write_end = udf_adinicb_write_end,
+ .write_begin = udf_adinicb_write_begin,
+ .write_end = udf_adinicb_write_end,
+ .direct_IO = udf_adinicb_direct_IO,
};
-static ssize_t udf_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
- unsigned long nr_segs, loff_t ppos)
+static ssize_t udf_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
{
ssize_t retval;
struct file *file = iocb->ki_filp;
- struct inode *inode = file->f_path.dentry->d_inode;
+ struct inode *inode = file_inode(file);
int err, pos;
- size_t count = iocb->ki_left;
+ size_t count = iocb->ki_nbytes;
struct udf_inode_info *iinfo = UDF_I(inode);
+ mutex_lock(&inode->i_mutex);
+ down_write(&iinfo->i_data_sem);
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
if (file->f_flags & O_APPEND)
pos = inode->i_size;
else
- pos = ppos;
+ pos = iocb->ki_pos;
if (inode->i_sb->s_blocksize <
(udf_file_entry_alloc_offset(inode) +
pos + count)) {
- udf_expand_file_adinicb(inode, pos + count, &err);
- if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
+ err = udf_expand_file_adinicb(inode);
+ if (err) {
+ mutex_unlock(&inode->i_mutex);
udf_debug("udf_expand_adinicb: err=%d\n", err);
return err;
}
@@ -134,132 +165,126 @@ static ssize_t udf_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
iinfo->i_lenAlloc = pos + count;
else
iinfo->i_lenAlloc = inode->i_size;
+ up_write(&iinfo->i_data_sem);
}
- }
+ } else
+ up_write(&iinfo->i_data_sem);
+
+ retval = __generic_file_write_iter(iocb, from);
+ mutex_unlock(&inode->i_mutex);
+
+ if (retval > 0) {
+ ssize_t err;
- retval = generic_file_aio_write(iocb, iov, nr_segs, ppos);
- if (retval > 0)
mark_inode_dirty(inode);
+ err = generic_write_sync(file, iocb->ki_pos - retval, retval);
+ if (err < 0)
+ retval = err;
+ }
return retval;
}
-/*
- * udf_ioctl
- *
- * PURPOSE
- * Issue an ioctl.
- *
- * DESCRIPTION
- * Optional - sys_ioctl() will return -ENOTTY if this routine is not
- * available, and the ioctl cannot be handled without filesystem help.
- *
- * sys_ioctl() handles these ioctls that apply only to regular files:
- * FIBMAP [requires udf_block_map()], FIGETBSZ, FIONREAD
- * These ioctls are also handled by sys_ioctl():
- * FIOCLEX, FIONCLEX, FIONBIO, FIOASYNC
- * All other ioctls are passed to the filesystem.
- *
- * Refer to sys_ioctl() in fs/ioctl.c
- * sys_ioctl() -> .
- *
- * PRE-CONDITIONS
- * inode Pointer to inode that ioctl was issued on.
- * filp Pointer to file that ioctl was issued on.
- * cmd The ioctl command.
- * arg The ioctl argument [can be interpreted as a
- * user-space pointer if desired].
- *
- * POST-CONDITIONS
- * <return> Success (>=0) or an error code (<=0) that
- * sys_ioctl() will return.
- *
- * HISTORY
- * July 1, 1997 - Andrew E. Mileski
- * Written, tested, and released.
- */
-int udf_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
- unsigned long arg)
+long udf_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
+ struct inode *inode = file_inode(filp);
long old_block, new_block;
int result = -EINVAL;
- if (file_permission(filp, MAY_READ) != 0) {
- udf_debug("no permission to access inode %lu\n",
- inode->i_ino);
- return -EPERM;
+ if (inode_permission(inode, MAY_READ) != 0) {
+ udf_debug("no permission to access inode %lu\n", inode->i_ino);
+ result = -EPERM;
+ goto out;
}
if (!arg) {
udf_debug("invalid argument to udf_ioctl\n");
- return -EINVAL;
+ result = -EINVAL;
+ goto out;
}
switch (cmd) {
case UDF_GETVOLIDENT:
if (copy_to_user((char __user *)arg,
UDF_SB(inode->i_sb)->s_volume_ident, 32))
- return -EFAULT;
+ result = -EFAULT;
else
- return 0;
+ result = 0;
+ goto out;
case UDF_RELOCATE_BLOCKS:
- if (!capable(CAP_SYS_ADMIN))
- return -EACCES;
- if (get_user(old_block, (long __user *)arg))
- return -EFAULT;
+ if (!capable(CAP_SYS_ADMIN)) {
+ result = -EPERM;
+ goto out;
+ }
+ if (get_user(old_block, (long __user *)arg)) {
+ result = -EFAULT;
+ goto out;
+ }
result = udf_relocate_blocks(inode->i_sb,
old_block, &new_block);
if (result == 0)
result = put_user(new_block, (long __user *)arg);
- return result;
+ goto out;
case UDF_GETEASIZE:
result = put_user(UDF_I(inode)->i_lenEAttr, (int __user *)arg);
- break;
+ goto out;
case UDF_GETEABLOCK:
result = copy_to_user((char __user *)arg,
UDF_I(inode)->i_ext.i_data,
UDF_I(inode)->i_lenEAttr) ? -EFAULT : 0;
- break;
+ goto out;
}
+out:
return result;
}
-/*
- * udf_release_file
- *
- * PURPOSE
- * Called when all references to the file are closed
- *
- * DESCRIPTION
- * Discard prealloced blocks
- *
- * HISTORY
- *
- */
static int udf_release_file(struct inode *inode, struct file *filp)
{
if (filp->f_mode & FMODE_WRITE) {
- lock_kernel();
+ down_write(&UDF_I(inode)->i_data_sem);
udf_discard_prealloc(inode);
- unlock_kernel();
+ udf_truncate_tail_extent(inode);
+ up_write(&UDF_I(inode)->i_data_sem);
}
return 0;
}
const struct file_operations udf_file_operations = {
- .read = do_sync_read,
- .aio_read = generic_file_aio_read,
- .ioctl = udf_ioctl,
+ .read = new_sync_read,
+ .read_iter = generic_file_read_iter,
+ .unlocked_ioctl = udf_ioctl,
.open = generic_file_open,
.mmap = generic_file_mmap,
- .write = do_sync_write,
- .aio_write = udf_file_aio_write,
+ .write = new_sync_write,
+ .write_iter = udf_file_write_iter,
.release = udf_release_file,
- .fsync = udf_fsync_file,
+ .fsync = generic_file_fsync,
.splice_read = generic_file_splice_read,
+ .llseek = generic_file_llseek,
};
+static int udf_setattr(struct dentry *dentry, struct iattr *attr)
+{
+ struct inode *inode = dentry->d_inode;
+ int error;
+
+ error = inode_change_ok(inode, attr);
+ if (error)
+ return error;
+
+ if ((attr->ia_valid & ATTR_SIZE) &&
+ attr->ia_size != i_size_read(inode)) {
+ error = udf_setsize(inode, attr->ia_size);
+ if (error)
+ return error;
+ }
+
+ setattr_copy(inode, attr);
+ mark_inode_dirty(inode);
+ return 0;
+}
+
const struct inode_operations udf_file_inode_operations = {
- .truncate = udf_truncate,
+ .setattr = udf_setattr,
};
diff --git a/fs/udf/fsync.c b/fs/udf/fsync.c
deleted file mode 100644
index b2c472b733b..00000000000
--- a/fs/udf/fsync.c
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- * fsync.c
- *
- * PURPOSE
- * Fsync handling routines for the OSTA-UDF(tm) filesystem.
- *
- * COPYRIGHT
- * This file is distributed under the terms of the GNU General Public
- * License (GPL). Copies of the GPL can be obtained from:
- * ftp://prep.ai.mit.edu/pub/gnu/GPL
- * Each contributing author retains all rights to their own work.
- *
- * (C) 1999-2001 Ben Fennema
- * (C) 1999-2000 Stelias Computing Inc
- *
- * HISTORY
- *
- * 05/22/99 blf Created.
- */
-
-#include "udfdecl.h"
-
-#include <linux/fs.h>
-
-static int udf_fsync_inode(struct inode *, int);
-
-/*
- * File may be NULL when we are called. Perhaps we shouldn't
- * even pass file to fsync ?
- */
-
-int udf_fsync_file(struct file *file, struct dentry *dentry, int datasync)
-{
- struct inode *inode = dentry->d_inode;
-
- return udf_fsync_inode(inode, datasync);
-}
-
-static int udf_fsync_inode(struct inode *inode, int datasync)
-{
- int err;
-
- err = sync_mapping_buffers(inode->i_mapping);
- if (!(inode->i_state & I_DIRTY))
- return err;
- if (datasync && !(inode->i_state & I_DIRTY_DATASYNC))
- return err;
-
- err |= udf_sync_inode(inode);
-
- return err ? -EIO : 0;
-}
diff --git a/fs/udf/ialloc.c b/fs/udf/ialloc.c
index 84360315aca..6eaf5edf1ea 100644
--- a/fs/udf/ialloc.c
+++ b/fs/udf/ialloc.c
@@ -20,8 +20,6 @@
#include "udfdecl.h"
#include <linux/fs.h>
-#include <linux/quotaops.h>
-#include <linux/udf_fs.h>
#include <linux/sched.h>
#include <linux/slab.h>
@@ -32,35 +30,22 @@ void udf_free_inode(struct inode *inode)
{
struct super_block *sb = inode->i_sb;
struct udf_sb_info *sbi = UDF_SB(sb);
+ struct logicalVolIntegrityDescImpUse *lvidiu = udf_sb_lvidiu(sb);
- /*
- * Note: we must free any quota before locking the superblock,
- * as writing the quota to disk may need the lock as well.
- */
- DQUOT_FREE_INODE(inode);
- DQUOT_DROP(inode);
-
- clear_inode(inode);
-
- mutex_lock(&sbi->s_alloc_mutex);
- if (sbi->s_lvid_bh) {
- struct logicalVolIntegrityDescImpUse *lvidiu =
- udf_sb_lvidiu(sbi);
+ if (lvidiu) {
+ mutex_lock(&sbi->s_alloc_mutex);
if (S_ISDIR(inode->i_mode))
- lvidiu->numDirs =
- cpu_to_le32(le32_to_cpu(lvidiu->numDirs) - 1);
+ le32_add_cpu(&lvidiu->numDirs, -1);
else
- lvidiu->numFiles =
- cpu_to_le32(le32_to_cpu(lvidiu->numFiles) - 1);
-
- mark_buffer_dirty(sbi->s_lvid_bh);
+ le32_add_cpu(&lvidiu->numFiles, -1);
+ udf_updated_lvid(sb);
+ mutex_unlock(&sbi->s_alloc_mutex);
}
- mutex_unlock(&sbi->s_alloc_mutex);
- udf_free_blocks(sb, NULL, UDF_I(inode)->i_location, 0, 1);
+ udf_free_blocks(sb, NULL, &UDF_I(inode)->i_location, 0, 1);
}
-struct inode *udf_new_inode(struct inode *dir, int mode, int *err)
+struct inode *udf_new_inode(struct inode *dir, umode_t mode, int *err)
{
struct super_block *sb = dir->i_sb;
struct udf_sb_info *sbi = UDF_SB(sb);
@@ -69,6 +54,7 @@ struct inode *udf_new_inode(struct inode *dir, int mode, int *err)
uint32_t start = UDF_I(dir)->i_location.logicalBlockNum;
struct udf_inode_info *iinfo;
struct udf_inode_info *dinfo = UDF_I(dir);
+ struct logicalVolIntegrityDescImpUse *lvidiu;
inode = new_inode(sb);
@@ -79,11 +65,24 @@ struct inode *udf_new_inode(struct inode *dir, int mode, int *err)
*err = -ENOSPC;
iinfo = UDF_I(inode);
- iinfo->i_unique = 0;
- iinfo->i_lenExtents = 0;
- iinfo->i_next_alloc_block = 0;
- iinfo->i_next_alloc_goal = 0;
- iinfo->i_strat4096 = 0;
+ if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_EXTENDED_FE)) {
+ iinfo->i_efe = 1;
+ if (UDF_VERS_USE_EXTENDED_FE > sbi->s_udfrev)
+ sbi->s_udfrev = UDF_VERS_USE_EXTENDED_FE;
+ iinfo->i_ext.i_data = kzalloc(inode->i_sb->s_blocksize -
+ sizeof(struct extendedFileEntry),
+ GFP_KERNEL);
+ } else {
+ iinfo->i_efe = 0;
+ iinfo->i_ext.i_data = kzalloc(inode->i_sb->s_blocksize -
+ sizeof(struct fileEntry),
+ GFP_KERNEL);
+ }
+ if (!iinfo->i_ext.i_data) {
+ iput(inode);
+ *err = -ENOMEM;
+ return NULL;
+ }
block = udf_new_block(dir->i_sb, NULL,
dinfo->i_location.partitionReferenceNum,
@@ -93,66 +92,29 @@ struct inode *udf_new_inode(struct inode *dir, int mode, int *err)
return NULL;
}
- mutex_lock(&sbi->s_alloc_mutex);
- if (sbi->s_lvid_bh) {
- struct logicalVolIntegrityDesc *lvid =
- (struct logicalVolIntegrityDesc *)
- sbi->s_lvid_bh->b_data;
- struct logicalVolIntegrityDescImpUse *lvidiu =
- udf_sb_lvidiu(sbi);
- struct logicalVolHeaderDesc *lvhd;
- uint64_t uniqueID;
- lvhd = (struct logicalVolHeaderDesc *)
- (lvid->logicalVolContentsUse);
+ lvidiu = udf_sb_lvidiu(sb);
+ if (lvidiu) {
+ iinfo->i_unique = lvid_get_unique_id(sb);
+ mutex_lock(&sbi->s_alloc_mutex);
if (S_ISDIR(mode))
- lvidiu->numDirs =
- cpu_to_le32(le32_to_cpu(lvidiu->numDirs) + 1);
+ le32_add_cpu(&lvidiu->numDirs, 1);
else
- lvidiu->numFiles =
- cpu_to_le32(le32_to_cpu(lvidiu->numFiles) + 1);
- iinfo->i_unique = uniqueID = le64_to_cpu(lvhd->uniqueID);
- if (!(++uniqueID & 0x00000000FFFFFFFFUL))
- uniqueID += 16;
- lvhd->uniqueID = cpu_to_le64(uniqueID);
- mark_buffer_dirty(sbi->s_lvid_bh);
- }
- inode->i_mode = mode;
- inode->i_uid = current->fsuid;
- if (dir->i_mode & S_ISGID) {
- inode->i_gid = dir->i_gid;
- if (S_ISDIR(mode))
- mode |= S_ISGID;
- } else {
- inode->i_gid = current->fsgid;
+ le32_add_cpu(&lvidiu->numFiles, 1);
+ udf_updated_lvid(sb);
+ mutex_unlock(&sbi->s_alloc_mutex);
}
+ inode_init_owner(inode, dir, mode);
+
iinfo->i_location.logicalBlockNum = block;
iinfo->i_location.partitionReferenceNum =
dinfo->i_location.partitionReferenceNum;
- inode->i_ino = udf_get_lb_pblock(sb, iinfo->i_location, 0);
+ inode->i_ino = udf_get_lb_pblock(sb, &iinfo->i_location, 0);
inode->i_blocks = 0;
iinfo->i_lenEAttr = 0;
iinfo->i_lenAlloc = 0;
iinfo->i_use = 0;
- if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_EXTENDED_FE)) {
- iinfo->i_efe = 1;
- if (UDF_VERS_USE_EXTENDED_FE > sbi->s_udfrev)
- sbi->s_udfrev = UDF_VERS_USE_EXTENDED_FE;
- iinfo->i_ext.i_data = kzalloc(inode->i_sb->s_blocksize -
- sizeof(struct extendedFileEntry),
- GFP_KERNEL);
- } else {
- iinfo->i_efe = 0;
- iinfo->i_ext.i_data = kzalloc(inode->i_sb->s_blocksize -
- sizeof(struct fileEntry),
- GFP_KERNEL);
- }
- if (!iinfo->i_ext.i_data) {
- iput(inode);
- *err = -ENOMEM;
- mutex_unlock(&sbi->s_alloc_mutex);
- return NULL;
- }
+ iinfo->i_checkpoint = 1;
if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_AD_IN_ICB))
iinfo->i_alloc_type = ICBTAG_FLAG_AD_IN_ICB;
else if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_SHORT_AD))
@@ -163,16 +125,6 @@ struct inode *udf_new_inode(struct inode *dir, int mode, int *err)
iinfo->i_crtime = current_fs_time(inode->i_sb);
insert_inode_hash(inode);
mark_inode_dirty(inode);
- mutex_unlock(&sbi->s_alloc_mutex);
-
- if (DQUOT_ALLOC_INODE(inode)) {
- DQUOT_DROP(inode);
- inode->i_flags |= S_NOQUOTA;
- inode->i_nlink = 0;
- iput(inode);
- *err = -EDQUOT;
- return NULL;
- }
*err = 0;
return inode;
diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index 24cfa55d0fd..236cd48184c 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -31,12 +31,14 @@
#include "udfdecl.h"
#include <linux/mm.h>
-#include <linux/smp_lock.h>
#include <linux/module.h>
#include <linux/pagemap.h>
#include <linux/buffer_head.h>
#include <linux/writeback.h>
#include <linux/slab.h>
+#include <linux/crc-itu-t.h>
+#include <linux/mpage.h>
+#include <linux/aio.h>
#include "udf_i.h"
#include "udf_sb.h"
@@ -47,83 +49,137 @@ MODULE_LICENSE("GPL");
#define EXTENT_MERGE_SIZE 5
-static mode_t udf_convert_permissions(struct fileEntry *);
+static umode_t udf_convert_permissions(struct fileEntry *);
static int udf_update_inode(struct inode *, int);
static void udf_fill_inode(struct inode *, struct buffer_head *);
+static int udf_sync_inode(struct inode *inode);
static int udf_alloc_i_data(struct inode *inode, size_t size);
-static struct buffer_head *inode_getblk(struct inode *, sector_t, int *,
- sector_t *, int *);
+static sector_t inode_getblk(struct inode *, sector_t, int *, int *);
static int8_t udf_insert_aext(struct inode *, struct extent_position,
- kernel_lb_addr, uint32_t);
+ struct kernel_lb_addr, uint32_t);
static void udf_split_extents(struct inode *, int *, int, int,
- kernel_long_ad[EXTENT_MERGE_SIZE], int *);
+ struct kernel_long_ad[EXTENT_MERGE_SIZE], int *);
static void udf_prealloc_extents(struct inode *, int, int,
- kernel_long_ad[EXTENT_MERGE_SIZE], int *);
+ struct kernel_long_ad[EXTENT_MERGE_SIZE], int *);
static void udf_merge_extents(struct inode *,
- kernel_long_ad[EXTENT_MERGE_SIZE], int *);
+ struct kernel_long_ad[EXTENT_MERGE_SIZE], int *);
static void udf_update_extents(struct inode *,
- kernel_long_ad[EXTENT_MERGE_SIZE], int, int,
+ struct kernel_long_ad[EXTENT_MERGE_SIZE], int, int,
struct extent_position *);
static int udf_get_block(struct inode *, sector_t, struct buffer_head *, int);
-/*
- * udf_delete_inode
- *
- * PURPOSE
- * Clean-up before the specified inode is destroyed.
- *
- * DESCRIPTION
- * This routine is called when the kernel destroys an inode structure
- * ie. when iput() finds i_count == 0.
- *
- * HISTORY
- * July 1, 1997 - Andrew E. Mileski
- * Written, tested, and released.
- *
- * Called at the last iput() if i_nlink is zero.
- */
-void udf_delete_inode(struct inode *inode)
+static void __udf_clear_extent_cache(struct inode *inode)
{
- truncate_inode_pages(&inode->i_data, 0);
+ struct udf_inode_info *iinfo = UDF_I(inode);
- if (is_bad_inode(inode))
- goto no_delete;
+ if (iinfo->cached_extent.lstart != -1) {
+ brelse(iinfo->cached_extent.epos.bh);
+ iinfo->cached_extent.lstart = -1;
+ }
+}
- inode->i_size = 0;
- udf_truncate(inode);
- lock_kernel();
+/* Invalidate extent cache */
+static void udf_clear_extent_cache(struct inode *inode)
+{
+ struct udf_inode_info *iinfo = UDF_I(inode);
- udf_update_inode(inode, IS_SYNC(inode));
- udf_free_inode(inode);
+ spin_lock(&iinfo->i_extent_cache_lock);
+ __udf_clear_extent_cache(inode);
+ spin_unlock(&iinfo->i_extent_cache_lock);
+}
- unlock_kernel();
- return;
+/* Return contents of extent cache */
+static int udf_read_extent_cache(struct inode *inode, loff_t bcount,
+ loff_t *lbcount, struct extent_position *pos)
+{
+ struct udf_inode_info *iinfo = UDF_I(inode);
+ int ret = 0;
+
+ spin_lock(&iinfo->i_extent_cache_lock);
+ if ((iinfo->cached_extent.lstart <= bcount) &&
+ (iinfo->cached_extent.lstart != -1)) {
+ /* Cache hit */
+ *lbcount = iinfo->cached_extent.lstart;
+ memcpy(pos, &iinfo->cached_extent.epos,
+ sizeof(struct extent_position));
+ if (pos->bh)
+ get_bh(pos->bh);
+ ret = 1;
+ }
+ spin_unlock(&iinfo->i_extent_cache_lock);
+ return ret;
+}
-no_delete:
- clear_inode(inode);
+/* Add extent to extent cache */
+static void udf_update_extent_cache(struct inode *inode, loff_t estart,
+ struct extent_position *pos, int next_epos)
+{
+ struct udf_inode_info *iinfo = UDF_I(inode);
+
+ spin_lock(&iinfo->i_extent_cache_lock);
+ /* Invalidate previously cached extent */
+ __udf_clear_extent_cache(inode);
+ if (pos->bh)
+ get_bh(pos->bh);
+ memcpy(&iinfo->cached_extent.epos, pos,
+ sizeof(struct extent_position));
+ iinfo->cached_extent.lstart = estart;
+ if (next_epos)
+ switch (iinfo->i_alloc_type) {
+ case ICBTAG_FLAG_AD_SHORT:
+ iinfo->cached_extent.epos.offset -=
+ sizeof(struct short_ad);
+ break;
+ case ICBTAG_FLAG_AD_LONG:
+ iinfo->cached_extent.epos.offset -=
+ sizeof(struct long_ad);
+ }
+ spin_unlock(&iinfo->i_extent_cache_lock);
}
-/*
- * If we are going to release inode from memory, we discard preallocation and
- * truncate last inode extent to proper length. We could use drop_inode() but
- * it's called under inode_lock and thus we cannot mark inode dirty there. We
- * use clear_inode() but we have to make sure to write inode as it's not written
- * automatically.
- */
-void udf_clear_inode(struct inode *inode)
+void udf_evict_inode(struct inode *inode)
{
- struct udf_inode_info *iinfo;
- if (!(inode->i_sb->s_flags & MS_RDONLY)) {
- lock_kernel();
- /* Discard preallocation for directories, symlinks, etc. */
- udf_discard_prealloc(inode);
- udf_truncate_tail_extent(inode);
- unlock_kernel();
- write_inode_now(inode, 0);
+ struct udf_inode_info *iinfo = UDF_I(inode);
+ int want_delete = 0;
+
+ if (!inode->i_nlink && !is_bad_inode(inode)) {
+ want_delete = 1;
+ udf_setsize(inode, 0);
+ udf_update_inode(inode, IS_SYNC(inode));
+ }
+ truncate_inode_pages_final(&inode->i_data);
+ invalidate_inode_buffers(inode);
+ clear_inode(inode);
+ if (iinfo->i_alloc_type != ICBTAG_FLAG_AD_IN_ICB &&
+ inode->i_size != iinfo->i_lenExtents) {
+ udf_warn(inode->i_sb, "Inode %lu (mode %o) has inode size %llu different from extent length %llu. Filesystem need not be standards compliant.\n",
+ inode->i_ino, inode->i_mode,
+ (unsigned long long)inode->i_size,
+ (unsigned long long)iinfo->i_lenExtents);
}
- iinfo = UDF_I(inode);
kfree(iinfo->i_ext.i_data);
iinfo->i_ext.i_data = NULL;
+ udf_clear_extent_cache(inode);
+ if (want_delete) {
+ udf_free_inode(inode);
+ }
+}
+
+static void udf_write_failed(struct address_space *mapping, loff_t to)
+{
+ struct inode *inode = mapping->host;
+ struct udf_inode_info *iinfo = UDF_I(inode);
+ loff_t isize = inode->i_size;
+
+ if (to > isize) {
+ truncate_pagecache(inode, isize);
+ if (iinfo->i_alloc_type != ICBTAG_FLAG_AD_IN_ICB) {
+ down_write(&iinfo->i_data_sem);
+ udf_clear_extent_cache(inode);
+ udf_truncate_extents(inode);
+ up_write(&iinfo->i_data_sem);
+ }
+ }
}
static int udf_writepage(struct page *page, struct writeback_control *wbc)
@@ -131,18 +187,49 @@ static int udf_writepage(struct page *page, struct writeback_control *wbc)
return block_write_full_page(page, udf_get_block, wbc);
}
+static int udf_writepages(struct address_space *mapping,
+ struct writeback_control *wbc)
+{
+ return mpage_writepages(mapping, wbc, udf_get_block);
+}
+
static int udf_readpage(struct file *file, struct page *page)
{
- return block_read_full_page(page, udf_get_block);
+ return mpage_readpage(page, udf_get_block);
+}
+
+static int udf_readpages(struct file *file, struct address_space *mapping,
+ struct list_head *pages, unsigned nr_pages)
+{
+ return mpage_readpages(mapping, pages, nr_pages, udf_get_block);
}
static int udf_write_begin(struct file *file, struct address_space *mapping,
loff_t pos, unsigned len, unsigned flags,
struct page **pagep, void **fsdata)
{
- *pagep = NULL;
- return block_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
- udf_get_block);
+ int ret;
+
+ ret = block_write_begin(mapping, pos, len, flags, pagep, udf_get_block);
+ if (unlikely(ret))
+ udf_write_failed(mapping, pos + len);
+ return ret;
+}
+
+static ssize_t udf_direct_IO(int rw, struct kiocb *iocb,
+ struct iov_iter *iter,
+ loff_t offset)
+{
+ struct file *file = iocb->ki_filp;
+ struct address_space *mapping = file->f_mapping;
+ struct inode *inode = mapping->host;
+ size_t count = iov_iter_count(iter);
+ ssize_t ret;
+
+ ret = blockdev_direct_IO(rw, iocb, inode, iter, offset, udf_get_block);
+ if (unlikely(ret < 0 && (rw & WRITE)))
+ udf_write_failed(mapping, offset + count);
+ return ret;
}
static sector_t udf_bmap(struct address_space *mapping, sector_t block)
@@ -152,37 +239,53 @@ static sector_t udf_bmap(struct address_space *mapping, sector_t block)
const struct address_space_operations udf_aops = {
.readpage = udf_readpage,
+ .readpages = udf_readpages,
.writepage = udf_writepage,
- .sync_page = block_sync_page,
- .write_begin = udf_write_begin,
- .write_end = generic_write_end,
+ .writepages = udf_writepages,
+ .write_begin = udf_write_begin,
+ .write_end = generic_write_end,
+ .direct_IO = udf_direct_IO,
.bmap = udf_bmap,
};
-void udf_expand_file_adinicb(struct inode *inode, int newsize, int *err)
+/*
+ * Expand file stored in ICB to a normal one-block-file
+ *
+ * This function requires i_data_sem for writing and releases it.
+ * This function requires i_mutex held
+ */
+int udf_expand_file_adinicb(struct inode *inode)
{
struct page *page;
char *kaddr;
struct udf_inode_info *iinfo = UDF_I(inode);
+ int err;
struct writeback_control udf_wbc = {
.sync_mode = WB_SYNC_NONE,
.nr_to_write = 1,
};
- /* from now on we have normal address_space methods */
- inode->i_data.a_ops = &udf_aops;
-
+ WARN_ON_ONCE(!mutex_is_locked(&inode->i_mutex));
if (!iinfo->i_lenAlloc) {
if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_SHORT_AD))
iinfo->i_alloc_type = ICBTAG_FLAG_AD_SHORT;
else
iinfo->i_alloc_type = ICBTAG_FLAG_AD_LONG;
+ /* from now on we have normal address_space methods */
+ inode->i_data.a_ops = &udf_aops;
+ up_write(&iinfo->i_data_sem);
mark_inode_dirty(inode);
- return;
+ return 0;
}
+ /*
+ * Release i_data_sem so that we can lock a page - page lock ranks
+ * above i_data_sem. i_mutex still protects us against file changes.
+ */
+ up_write(&iinfo->i_data_sem);
- page = grab_cache_page(inode->i_mapping, 0);
- BUG_ON(!PageLocked(page));
+ page = find_or_create_page(inode->i_mapping, 0, GFP_NOFS);
+ if (!page)
+ return -ENOMEM;
if (!PageUptodate(page)) {
kaddr = kmap(page);
@@ -194,6 +297,7 @@ void udf_expand_file_adinicb(struct inode *inode, int newsize, int *err)
SetPageUptodate(page);
kunmap(page);
}
+ down_write(&iinfo->i_data_sem);
memset(iinfo->i_ext.i_data + iinfo->i_lenEAttr, 0x00,
iinfo->i_lenAlloc);
iinfo->i_lenAlloc = 0;
@@ -201,11 +305,27 @@ void udf_expand_file_adinicb(struct inode *inode, int newsize, int *err)
iinfo->i_alloc_type = ICBTAG_FLAG_AD_SHORT;
else
iinfo->i_alloc_type = ICBTAG_FLAG_AD_LONG;
-
- inode->i_data.a_ops->writepage(page, &udf_wbc);
+ /* from now on we have normal address_space methods */
+ inode->i_data.a_ops = &udf_aops;
+ up_write(&iinfo->i_data_sem);
+ err = inode->i_data.a_ops->writepage(page, &udf_wbc);
+ if (err) {
+ /* Restore everything back so that we don't lose data... */
+ lock_page(page);
+ kaddr = kmap(page);
+ down_write(&iinfo->i_data_sem);
+ memcpy(iinfo->i_ext.i_data + iinfo->i_lenEAttr, kaddr,
+ inode->i_size);
+ kunmap(page);
+ unlock_page(page);
+ iinfo->i_alloc_type = ICBTAG_FLAG_AD_IN_ICB;
+ inode->i_data.a_ops = &udf_adinicb_aops;
+ up_write(&iinfo->i_data_sem);
+ }
page_cache_release(page);
-
mark_inode_dirty(inode);
+
+ return err;
}
struct buffer_head *udf_expand_dir_adinicb(struct inode *inode, int *block,
@@ -213,8 +333,7 @@ struct buffer_head *udf_expand_dir_adinicb(struct inode *inode, int *block,
{
int newblock;
struct buffer_head *dbh = NULL;
- kernel_lb_addr eloc;
- uint32_t elen;
+ struct kernel_lb_addr eloc;
uint8_t alloctype;
struct extent_position epos;
@@ -289,12 +408,11 @@ struct buffer_head *udf_expand_dir_adinicb(struct inode *inode, int *block,
eloc.logicalBlockNum = *block;
eloc.partitionReferenceNum =
iinfo->i_location.partitionReferenceNum;
- elen = inode->i_sb->s_blocksize;
- iinfo->i_lenExtents = elen;
+ iinfo->i_lenExtents = inode->i_size;
epos.bh = NULL;
epos.block = iinfo->i_location;
epos.offset = udf_file_entry_alloc_offset(inode);
- udf_add_aext(inode, &epos, eloc, elen, 0);
+ udf_add_aext(inode, &epos, &eloc, inode->i_size, 0);
/* UniqueID stuff */
brelse(epos.bh);
@@ -306,7 +424,6 @@ static int udf_get_block(struct inode *inode, sector_t block,
struct buffer_head *bh_result, int create)
{
int err, new;
- struct buffer_head *bh;
sector_t phys = 0;
struct udf_inode_info *iinfo;
@@ -319,38 +436,26 @@ static int udf_get_block(struct inode *inode, sector_t block,
err = -EIO;
new = 0;
- bh = NULL;
-
- lock_kernel();
-
- if (block < 0)
- goto abort_negative;
-
iinfo = UDF_I(inode);
+
+ down_write(&iinfo->i_data_sem);
if (block == iinfo->i_next_alloc_block + 1) {
iinfo->i_next_alloc_block++;
iinfo->i_next_alloc_goal++;
}
- err = 0;
-
- bh = inode_getblk(inode, block, &err, &phys, &new);
- BUG_ON(bh);
- if (err)
+ udf_clear_extent_cache(inode);
+ phys = inode_getblk(inode, block, &err, &new);
+ if (!phys)
goto abort;
- BUG_ON(!phys);
if (new)
set_buffer_new(bh_result);
map_bh(bh_result, inode->i_sb, phys);
abort:
- unlock_kernel();
+ up_write(&iinfo->i_data_sem);
return err;
-
-abort_negative:
- udf_warning(inode->i_sb, "udf_get_block", "block < 0");
- goto abort;
}
static struct buffer_head *udf_getblk(struct inode *inode, long block,
@@ -378,15 +483,18 @@ static struct buffer_head *udf_getblk(struct inode *inode, long block,
}
/* Extend the file by 'blocks' blocks, return the number of extents added */
-int udf_extend_file(struct inode *inode, struct extent_position *last_pos,
- kernel_long_ad *last_ext, sector_t blocks)
+static int udf_do_extend_file(struct inode *inode,
+ struct extent_position *last_pos,
+ struct kernel_long_ad *last_ext,
+ sector_t blocks)
{
sector_t add;
int count = 0, fake = !(last_ext->extLength & UDF_EXTENT_LENGTH_MASK);
struct super_block *sb = inode->i_sb;
- kernel_lb_addr prealloc_loc = {};
+ struct kernel_lb_addr prealloc_loc = {};
int prealloc_len = 0;
struct udf_inode_info *iinfo;
+ int err;
/* The previous extent is fake and we should not extend by anything
* - there's nothing to do... */
@@ -431,11 +539,11 @@ int udf_extend_file(struct inode *inode, struct extent_position *last_pos,
}
if (fake) {
- udf_add_aext(inode, last_pos, last_ext->extLocation,
+ udf_add_aext(inode, last_pos, &last_ext->extLocation,
last_ext->extLength, 1);
count++;
} else
- udf_write_aext(inode, last_pos, last_ext->extLocation,
+ udf_write_aext(inode, last_pos, &last_ext->extLocation,
last_ext->extLength, 1);
/* Managed to do everything necessary? */
@@ -452,26 +560,29 @@ int udf_extend_file(struct inode *inode, struct extent_position *last_pos,
/* Create enough extents to cover the whole hole */
while (blocks > add) {
blocks -= add;
- if (udf_add_aext(inode, last_pos, last_ext->extLocation,
- last_ext->extLength, 1) == -1)
- return -1;
+ err = udf_add_aext(inode, last_pos, &last_ext->extLocation,
+ last_ext->extLength, 1);
+ if (err)
+ return err;
count++;
}
if (blocks) {
last_ext->extLength = EXT_NOT_RECORDED_NOT_ALLOCATED |
(blocks << sb->s_blocksize_bits);
- if (udf_add_aext(inode, last_pos, last_ext->extLocation,
- last_ext->extLength, 1) == -1)
- return -1;
+ err = udf_add_aext(inode, last_pos, &last_ext->extLocation,
+ last_ext->extLength, 1);
+ if (err)
+ return err;
count++;
}
out:
/* Do we have some preallocated blocks saved? */
if (prealloc_len) {
- if (udf_add_aext(inode, last_pos, prealloc_loc,
- prealloc_len, 1) == -1)
- return -1;
+ err = udf_add_aext(inode, last_pos, &prealloc_loc,
+ prealloc_len, 1);
+ if (err)
+ return err;
last_ext->extLocation = prealloc_loc;
last_ext->extLength = prealloc_len;
count++;
@@ -479,25 +590,80 @@ out:
/* last_pos should point to the last written extent... */
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
- last_pos->offset -= sizeof(short_ad);
+ last_pos->offset -= sizeof(struct short_ad);
else if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
- last_pos->offset -= sizeof(long_ad);
+ last_pos->offset -= sizeof(struct long_ad);
else
- return -1;
+ return -EIO;
return count;
}
-static struct buffer_head *inode_getblk(struct inode *inode, sector_t block,
- int *err, sector_t *phys, int *new)
+static int udf_extend_file(struct inode *inode, loff_t newsize)
+{
+
+ struct extent_position epos;
+ struct kernel_lb_addr eloc;
+ uint32_t elen;
+ int8_t etype;
+ struct super_block *sb = inode->i_sb;
+ sector_t first_block = newsize >> sb->s_blocksize_bits, offset;
+ int adsize;
+ struct udf_inode_info *iinfo = UDF_I(inode);
+ struct kernel_long_ad extent;
+ int err;
+
+ if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
+ adsize = sizeof(struct short_ad);
+ else if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
+ adsize = sizeof(struct long_ad);
+ else
+ BUG();
+
+ etype = inode_bmap(inode, first_block, &epos, &eloc, &elen, &offset);
+
+ /* File has extent covering the new size (could happen when extending
+ * inside a block)? */
+ if (etype != -1)
+ return 0;
+ if (newsize & (sb->s_blocksize - 1))
+ offset++;
+ /* Extended file just to the boundary of the last file block? */
+ if (offset == 0)
+ return 0;
+
+ /* Truncate is extending the file by 'offset' blocks */
+ if ((!epos.bh && epos.offset == udf_file_entry_alloc_offset(inode)) ||
+ (epos.bh && epos.offset == sizeof(struct allocExtDesc))) {
+ /* File has no extents at all or has empty last
+ * indirect extent! Create a fake extent... */
+ extent.extLocation.logicalBlockNum = 0;
+ extent.extLocation.partitionReferenceNum = 0;
+ extent.extLength = EXT_NOT_RECORDED_NOT_ALLOCATED;
+ } else {
+ epos.offset -= adsize;
+ etype = udf_next_aext(inode, &epos, &extent.extLocation,
+ &extent.extLength, 0);
+ extent.extLength |= etype << 30;
+ }
+ err = udf_do_extend_file(inode, &epos, &extent, offset);
+ if (err < 0)
+ goto out;
+ err = 0;
+ iinfo->i_lenExtents = newsize;
+out:
+ brelse(epos.bh);
+ return err;
+}
+
+static sector_t inode_getblk(struct inode *inode, sector_t block,
+ int *err, int *new)
{
- static sector_t last_block;
- struct buffer_head *result = NULL;
- kernel_long_ad laarr[EXTENT_MERGE_SIZE];
+ struct kernel_long_ad laarr[EXTENT_MERGE_SIZE];
struct extent_position prev_epos, cur_epos, next_epos;
int count = 0, startnum = 0, endnum = 0;
uint32_t elen = 0, tmpelen;
- kernel_lb_addr eloc, tmpeloc;
+ struct kernel_lb_addr eloc, tmpeloc;
int c = 1;
loff_t lbcount = 0, b_off = 0;
uint32_t newblocknum, newblock;
@@ -506,7 +672,10 @@ static struct buffer_head *inode_getblk(struct inode *inode, sector_t block,
struct udf_inode_info *iinfo = UDF_I(inode);
int goal = 0, pgoal = iinfo->i_location.logicalBlockNum;
int lastblock = 0;
+ bool isBeyondEOF;
+ *err = 0;
+ *new = 0;
prev_epos.offset = udf_file_entry_alloc_offset(inode);
prev_epos.block = iinfo->i_location;
prev_epos.bh = NULL;
@@ -570,21 +739,19 @@ static struct buffer_head *inode_getblk(struct inode *inode, sector_t block,
elen = EXT_RECORDED_ALLOCATED |
((elen + inode->i_sb->s_blocksize - 1) &
~(inode->i_sb->s_blocksize - 1));
- etype = udf_write_aext(inode, &cur_epos, eloc, elen, 1);
+ udf_write_aext(inode, &cur_epos, &eloc, elen, 1);
}
brelse(prev_epos.bh);
brelse(cur_epos.bh);
brelse(next_epos.bh);
- newblock = udf_get_lb_pblock(inode->i_sb, eloc, offset);
- *phys = newblock;
- return NULL;
+ newblock = udf_get_lb_pblock(inode->i_sb, &eloc, offset);
+ return newblock;
}
- last_block = block;
/* Are we beyond EOF? */
if (etype == -1) {
int ret;
-
+ isBeyondEOF = 1;
if (count) {
if (c)
laarr[0] = laarr[1];
@@ -592,22 +759,20 @@ static struct buffer_head *inode_getblk(struct inode *inode, sector_t block,
} else {
/* Create a fake extent when there's not one */
memset(&laarr[0].extLocation, 0x00,
- sizeof(kernel_lb_addr));
+ sizeof(struct kernel_lb_addr));
laarr[0].extLength = EXT_NOT_RECORDED_NOT_ALLOCATED;
- /* Will udf_extend_file() create real extent from
+ /* Will udf_do_extend_file() create real extent from
a fake one? */
startnum = (offset > 0);
}
/* Create extents for the hole between EOF and offset */
- ret = udf_extend_file(inode, &prev_epos, laarr, offset);
- if (ret == -1) {
+ ret = udf_do_extend_file(inode, &prev_epos, laarr, offset);
+ if (ret < 0) {
brelse(prev_epos.bh);
brelse(cur_epos.bh);
brelse(next_epos.bh);
- /* We don't really know the error here so we just make
- * something up */
- *err = -ENOSPC;
- return NULL;
+ *err = ret;
+ return 0;
}
c = 0;
offset = 0;
@@ -622,13 +787,13 @@ static struct buffer_head *inode_getblk(struct inode *inode, sector_t block,
laarr[c].extLength = EXT_NOT_RECORDED_NOT_ALLOCATED |
inode->i_sb->s_blocksize;
memset(&laarr[c].extLocation, 0x00,
- sizeof(kernel_lb_addr));
+ sizeof(struct kernel_lb_addr));
count++;
- endnum++;
}
endnum = c + 1;
lastblock = 1;
} else {
+ isBeyondEOF = 0;
endnum = startnum = ((count > 2) ? 2 : count);
/* if the current extent is in position 0,
@@ -671,10 +836,13 @@ static struct buffer_head *inode_getblk(struct inode *inode, sector_t block,
goal, err);
if (!newblocknum) {
brelse(prev_epos.bh);
+ brelse(cur_epos.bh);
+ brelse(next_epos.bh);
*err = -ENOSPC;
- return NULL;
+ return 0;
}
- iinfo->i_lenExtents += inode->i_sb->s_blocksize;
+ if (isBeyondEOF)
+ iinfo->i_lenExtents += inode->i_sb->s_blocksize;
}
/* if the extent the requsted block is located in contains multiple
@@ -684,8 +852,12 @@ static struct buffer_head *inode_getblk(struct inode *inode, sector_t block,
udf_split_extents(inode, &c, offset, newblocknum, laarr, &endnum);
#ifdef UDF_PREALLOCATE
- /* preallocate blocks */
- udf_prealloc_extents(inode, c, lastblock, laarr, &endnum);
+ /* We preallocate blocks only for regular files. It also makes sense
+ * for directories but there's a problem when to drop the
+ * preallocation. We might use some delayed work for that but I feel
+ * it's overengineering for a filesystem like UDF. */
+ if (S_ISREG(inode->i_mode))
+ udf_prealloc_extents(inode, c, lastblock, laarr, &endnum);
#endif
/* merge any continuous blocks in laarr */
@@ -697,13 +869,15 @@ static struct buffer_head *inode_getblk(struct inode *inode, sector_t block,
udf_update_extents(inode, laarr, startnum, endnum, &prev_epos);
brelse(prev_epos.bh);
+ brelse(cur_epos.bh);
+ brelse(next_epos.bh);
newblock = udf_get_pblock(inode->i_sb, newblocknum,
iinfo->i_location.partitionReferenceNum, 0);
- if (!newblock)
- return NULL;
- *phys = newblock;
- *err = 0;
+ if (!newblock) {
+ *err = -EIO;
+ return 0;
+ }
*new = 1;
iinfo->i_next_alloc_block = block;
iinfo->i_next_alloc_goal = newblocknum;
@@ -714,12 +888,12 @@ static struct buffer_head *inode_getblk(struct inode *inode, sector_t block,
else
mark_inode_dirty(inode);
- return result;
+ return newblock;
}
static void udf_split_extents(struct inode *inode, int *c, int offset,
int newblocknum,
- kernel_long_ad laarr[EXTENT_MERGE_SIZE],
+ struct kernel_long_ad laarr[EXTENT_MERGE_SIZE],
int *endnum)
{
unsigned long blocksize = inode->i_sb->s_blocksize;
@@ -746,7 +920,7 @@ static void udf_split_extents(struct inode *inode, int *c, int offset,
if (offset) {
if (etype == (EXT_NOT_RECORDED_ALLOCATED >> 30)) {
udf_free_blocks(inode->i_sb, inode,
- laarr[curr].extLocation,
+ &laarr[curr].extLocation,
0, offset);
laarr[curr].extLength =
EXT_NOT_RECORDED_NOT_ALLOCATED |
@@ -783,7 +957,7 @@ static void udf_split_extents(struct inode *inode, int *c, int offset,
}
static void udf_prealloc_extents(struct inode *inode, int c, int lastblock,
- kernel_long_ad laarr[EXTENT_MERGE_SIZE],
+ struct kernel_long_ad laarr[EXTENT_MERGE_SIZE],
int *endnum)
{
int start, length = 0, currlength = 0, i;
@@ -837,7 +1011,7 @@ static void udf_prealloc_extents(struct inode *inode, int c, int lastblock,
inode->i_sb->s_blocksize_bits);
else {
memmove(&laarr[c + 2], &laarr[c + 1],
- sizeof(long_ad) * (*endnum - (c + 1)));
+ sizeof(struct long_ad) * (*endnum - (c + 1)));
(*endnum)++;
laarr[c + 1].extLocation.logicalBlockNum = next;
laarr[c + 1].extLocation.partitionReferenceNum =
@@ -866,7 +1040,7 @@ static void udf_prealloc_extents(struct inode *inode, int c, int lastblock,
if (*endnum > (i + 1))
memmove(&laarr[i],
&laarr[i + 1],
- sizeof(long_ad) *
+ sizeof(struct long_ad) *
(*endnum - (i + 1)));
i--;
(*endnum)--;
@@ -879,7 +1053,7 @@ static void udf_prealloc_extents(struct inode *inode, int c, int lastblock,
}
static void udf_merge_extents(struct inode *inode,
- kernel_long_ad laarr[EXTENT_MERGE_SIZE],
+ struct kernel_long_ad laarr[EXTENT_MERGE_SIZE],
int *endnum)
{
int i;
@@ -887,8 +1061,8 @@ static void udf_merge_extents(struct inode *inode,
unsigned char blocksize_bits = inode->i_sb->s_blocksize_bits;
for (i = 0; i < (*endnum - 1); i++) {
- kernel_long_ad *li /*l[i]*/ = &laarr[i];
- kernel_long_ad *lip1 /*l[i plus 1]*/ = &laarr[i + 1];
+ struct kernel_long_ad *li /*l[i]*/ = &laarr[i];
+ struct kernel_long_ad *lip1 /*l[i plus 1]*/ = &laarr[i + 1];
if (((li->extLength >> 30) == (lip1->extLength >> 30)) &&
(((li->extLength >> 30) ==
@@ -922,7 +1096,7 @@ static void udf_merge_extents(struct inode *inode,
blocksize - 1) & ~(blocksize - 1));
if (*endnum > (i + 2))
memmove(&laarr[i + 1], &laarr[i + 2],
- sizeof(long_ad) *
+ sizeof(struct long_ad) *
(*endnum - (i + 2)));
i--;
(*endnum)--;
@@ -931,7 +1105,7 @@ static void udf_merge_extents(struct inode *inode,
(EXT_NOT_RECORDED_ALLOCATED >> 30)) &&
((lip1->extLength >> 30) ==
(EXT_NOT_RECORDED_NOT_ALLOCATED >> 30))) {
- udf_free_blocks(inode->i_sb, inode, li->extLocation, 0,
+ udf_free_blocks(inode->i_sb, inode, &li->extLocation, 0,
((li->extLength &
UDF_EXTENT_LENGTH_MASK) +
blocksize - 1) >> blocksize_bits);
@@ -957,7 +1131,7 @@ static void udf_merge_extents(struct inode *inode,
blocksize - 1) & ~(blocksize - 1));
if (*endnum > (i + 2))
memmove(&laarr[i + 1], &laarr[i + 2],
- sizeof(long_ad) *
+ sizeof(struct long_ad) *
(*endnum - (i + 2)));
i--;
(*endnum)--;
@@ -965,7 +1139,7 @@ static void udf_merge_extents(struct inode *inode,
} else if ((li->extLength >> 30) ==
(EXT_NOT_RECORDED_ALLOCATED >> 30)) {
udf_free_blocks(inode->i_sb, inode,
- li->extLocation, 0,
+ &li->extLocation, 0,
((li->extLength &
UDF_EXTENT_LENGTH_MASK) +
blocksize - 1) >> blocksize_bits);
@@ -979,12 +1153,12 @@ static void udf_merge_extents(struct inode *inode,
}
static void udf_update_extents(struct inode *inode,
- kernel_long_ad laarr[EXTENT_MERGE_SIZE],
+ struct kernel_long_ad laarr[EXTENT_MERGE_SIZE],
int startnum, int endnum,
struct extent_position *epos)
{
int start = 0, i;
- kernel_lb_addr tmploc;
+ struct kernel_lb_addr tmploc;
uint32_t tmplen;
if (startnum > endnum) {
@@ -1003,7 +1177,7 @@ static void udf_update_extents(struct inode *inode,
for (i = start; i < endnum; i++) {
udf_next_aext(inode, epos, &tmploc, &tmplen, 0);
- udf_write_aext(inode, epos, laarr[i].extLocation,
+ udf_write_aext(inode, epos, &laarr[i].extLocation,
laarr[i].extLength, 1);
}
}
@@ -1031,50 +1205,70 @@ struct buffer_head *udf_bread(struct inode *inode, int block,
return NULL;
}
-void udf_truncate(struct inode *inode)
+int udf_setsize(struct inode *inode, loff_t newsize)
{
- int offset;
int err;
struct udf_inode_info *iinfo;
+ int bsize = 1 << inode->i_blkbits;
if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
S_ISLNK(inode->i_mode)))
- return;
+ return -EINVAL;
if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
- return;
+ return -EPERM;
- lock_kernel();
iinfo = UDF_I(inode);
- if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
- if (inode->i_sb->s_blocksize <
- (udf_file_entry_alloc_offset(inode) +
- inode->i_size)) {
- udf_expand_file_adinicb(inode, inode->i_size, &err);
- if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
- inode->i_size = iinfo->i_lenAlloc;
- unlock_kernel();
- return;
- } else
- udf_truncate_extents(inode);
- } else {
- offset = inode->i_size & (inode->i_sb->s_blocksize - 1);
- memset(iinfo->i_ext.i_data + iinfo->i_lenEAttr + offset,
- 0x00, inode->i_sb->s_blocksize -
- offset - udf_file_entry_alloc_offset(inode));
- iinfo->i_lenAlloc = inode->i_size;
+ if (newsize > inode->i_size) {
+ down_write(&iinfo->i_data_sem);
+ if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
+ if (bsize <
+ (udf_file_entry_alloc_offset(inode) + newsize)) {
+ err = udf_expand_file_adinicb(inode);
+ if (err)
+ return err;
+ down_write(&iinfo->i_data_sem);
+ } else {
+ iinfo->i_lenAlloc = newsize;
+ goto set_size;
+ }
}
+ err = udf_extend_file(inode, newsize);
+ if (err) {
+ up_write(&iinfo->i_data_sem);
+ return err;
+ }
+set_size:
+ truncate_setsize(inode, newsize);
+ up_write(&iinfo->i_data_sem);
} else {
- block_truncate_page(inode->i_mapping, inode->i_size,
- udf_get_block);
+ if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
+ down_write(&iinfo->i_data_sem);
+ udf_clear_extent_cache(inode);
+ memset(iinfo->i_ext.i_data + iinfo->i_lenEAttr + newsize,
+ 0x00, bsize - newsize -
+ udf_file_entry_alloc_offset(inode));
+ iinfo->i_lenAlloc = newsize;
+ truncate_setsize(inode, newsize);
+ up_write(&iinfo->i_data_sem);
+ goto update_time;
+ }
+ err = block_truncate_page(inode->i_mapping, newsize,
+ udf_get_block);
+ if (err)
+ return err;
+ down_write(&iinfo->i_data_sem);
+ udf_clear_extent_cache(inode);
+ truncate_setsize(inode, newsize);
udf_truncate_extents(inode);
+ up_write(&iinfo->i_data_sem);
}
-
+update_time:
inode->i_mtime = inode->i_ctime = current_fs_time(inode->i_sb);
if (IS_SYNC(inode))
udf_sync_inode(inode);
else
mark_inode_dirty(inode);
- unlock_kernel();
+ return 0;
}
static void __udf_read_inode(struct inode *inode)
@@ -1096,18 +1290,17 @@ static void __udf_read_inode(struct inode *inode)
* i_nlink = 1
* i_op = NULL;
*/
- bh = udf_read_ptagged(inode->i_sb, iinfo->i_location, 0, &ident);
+ bh = udf_read_ptagged(inode->i_sb, &iinfo->i_location, 0, &ident);
if (!bh) {
- printk(KERN_ERR "udf: udf_read_inode(ino %ld) failed !bh\n",
- inode->i_ino);
+ udf_err(inode->i_sb, "(ino %ld) failed !bh\n", inode->i_ino);
make_bad_inode(inode);
return;
}
if (ident != TAG_IDENT_FE && ident != TAG_IDENT_EFE &&
ident != TAG_IDENT_USE) {
- printk(KERN_ERR "udf: udf_read_inode(ino %ld) "
- "failed ident=%d\n", inode->i_ino, ident);
+ udf_err(inode->i_sb, "(ino %ld) failed ident=%d\n",
+ inode->i_ino, ident);
brelse(bh);
make_bad_inode(inode);
return;
@@ -1116,45 +1309,39 @@ static void __udf_read_inode(struct inode *inode)
fe = (struct fileEntry *)bh->b_data;
if (fe->icbTag.strategyType == cpu_to_le16(4096)) {
- struct buffer_head *ibh = NULL, *nbh = NULL;
- struct indirectEntry *ie;
+ struct buffer_head *ibh;
- ibh = udf_read_ptagged(inode->i_sb, iinfo->i_location, 1,
+ ibh = udf_read_ptagged(inode->i_sb, &iinfo->i_location, 1,
&ident);
- if (ident == TAG_IDENT_IE) {
- if (ibh) {
- kernel_lb_addr loc;
- ie = (struct indirectEntry *)ibh->b_data;
-
- loc = lelb_to_cpu(ie->indirectICB.extLocation);
-
- if (ie->indirectICB.extLength &&
- (nbh = udf_read_ptagged(inode->i_sb, loc, 0,
- &ident))) {
- if (ident == TAG_IDENT_FE ||
- ident == TAG_IDENT_EFE) {
- memcpy(&iinfo->i_location,
- &loc,
- sizeof(kernel_lb_addr));
- brelse(bh);
- brelse(ibh);
- brelse(nbh);
- __udf_read_inode(inode);
- return;
- } else {
- brelse(nbh);
- brelse(ibh);
- }
- } else {
+ if (ident == TAG_IDENT_IE && ibh) {
+ struct buffer_head *nbh = NULL;
+ struct kernel_lb_addr loc;
+ struct indirectEntry *ie;
+
+ ie = (struct indirectEntry *)ibh->b_data;
+ loc = lelb_to_cpu(ie->indirectICB.extLocation);
+
+ if (ie->indirectICB.extLength &&
+ (nbh = udf_read_ptagged(inode->i_sb, &loc, 0,
+ &ident))) {
+ if (ident == TAG_IDENT_FE ||
+ ident == TAG_IDENT_EFE) {
+ memcpy(&iinfo->i_location,
+ &loc,
+ sizeof(struct kernel_lb_addr));
+ brelse(bh);
brelse(ibh);
+ brelse(nbh);
+ __udf_read_inode(inode);
+ return;
}
+ brelse(nbh);
}
- } else {
- brelse(ibh);
}
+ brelse(ibh);
} else if (fe->icbTag.strategyType != cpu_to_le16(4)) {
- printk(KERN_ERR "udf: unsupported strategy type: %d\n",
- le16_to_cpu(fe->icbTag.strategyType));
+ udf_err(inode->i_sb, "unsupported strategy type: %d\n",
+ le16_to_cpu(fe->icbTag.strategyType));
brelse(bh);
make_bad_inode(inode);
return;
@@ -1168,11 +1355,9 @@ static void udf_fill_inode(struct inode *inode, struct buffer_head *bh)
{
struct fileEntry *fe;
struct extendedFileEntry *efe;
- time_t convtime;
- long convtime_usec;
- int offset;
struct udf_sb_info *sbi = UDF_SB(inode->i_sb);
struct udf_inode_info *iinfo = UDF_I(inode);
+ unsigned int link_count;
fe = (struct fileEntry *)bh->b_data;
efe = (struct extendedFileEntry *)bh->b_data;
@@ -1231,101 +1416,77 @@ static void udf_fill_inode(struct inode *inode, struct buffer_head *bh)
return;
}
- inode->i_uid = le32_to_cpu(fe->uid);
- if (inode->i_uid == -1 ||
+ read_lock(&sbi->s_cred_lock);
+ i_uid_write(inode, le32_to_cpu(fe->uid));
+ if (!uid_valid(inode->i_uid) ||
UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_UID_IGNORE) ||
UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_UID_SET))
inode->i_uid = UDF_SB(inode->i_sb)->s_uid;
- inode->i_gid = le32_to_cpu(fe->gid);
- if (inode->i_gid == -1 ||
+ i_gid_write(inode, le32_to_cpu(fe->gid));
+ if (!gid_valid(inode->i_gid) ||
UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_GID_IGNORE) ||
UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_GID_SET))
inode->i_gid = UDF_SB(inode->i_sb)->s_gid;
- inode->i_nlink = le16_to_cpu(fe->fileLinkCount);
- if (!inode->i_nlink)
- inode->i_nlink = 1;
+ if (fe->icbTag.fileType != ICBTAG_FILE_TYPE_DIRECTORY &&
+ sbi->s_fmode != UDF_INVALID_MODE)
+ inode->i_mode = sbi->s_fmode;
+ else if (fe->icbTag.fileType == ICBTAG_FILE_TYPE_DIRECTORY &&
+ sbi->s_dmode != UDF_INVALID_MODE)
+ inode->i_mode = sbi->s_dmode;
+ else
+ inode->i_mode = udf_convert_permissions(fe);
+ inode->i_mode &= ~sbi->s_umask;
+ read_unlock(&sbi->s_cred_lock);
+
+ link_count = le16_to_cpu(fe->fileLinkCount);
+ if (!link_count)
+ link_count = 1;
+ set_nlink(inode, link_count);
inode->i_size = le64_to_cpu(fe->informationLength);
iinfo->i_lenExtents = inode->i_size;
- inode->i_mode = udf_convert_permissions(fe);
- inode->i_mode &= ~UDF_SB(inode->i_sb)->s_umask;
-
if (iinfo->i_efe == 0) {
inode->i_blocks = le64_to_cpu(fe->logicalBlocksRecorded) <<
(inode->i_sb->s_blocksize_bits - 9);
- if (udf_stamp_to_time(&convtime, &convtime_usec,
- lets_to_cpu(fe->accessTime))) {
- inode->i_atime.tv_sec = convtime;
- inode->i_atime.tv_nsec = convtime_usec * 1000;
- } else {
+ if (!udf_disk_stamp_to_time(&inode->i_atime, fe->accessTime))
inode->i_atime = sbi->s_record_time;
- }
- if (udf_stamp_to_time(&convtime, &convtime_usec,
- lets_to_cpu(fe->modificationTime))) {
- inode->i_mtime.tv_sec = convtime;
- inode->i_mtime.tv_nsec = convtime_usec * 1000;
- } else {
+ if (!udf_disk_stamp_to_time(&inode->i_mtime,
+ fe->modificationTime))
inode->i_mtime = sbi->s_record_time;
- }
- if (udf_stamp_to_time(&convtime, &convtime_usec,
- lets_to_cpu(fe->attrTime))) {
- inode->i_ctime.tv_sec = convtime;
- inode->i_ctime.tv_nsec = convtime_usec * 1000;
- } else {
+ if (!udf_disk_stamp_to_time(&inode->i_ctime, fe->attrTime))
inode->i_ctime = sbi->s_record_time;
- }
iinfo->i_unique = le64_to_cpu(fe->uniqueID);
iinfo->i_lenEAttr = le32_to_cpu(fe->lengthExtendedAttr);
iinfo->i_lenAlloc = le32_to_cpu(fe->lengthAllocDescs);
- offset = sizeof(struct fileEntry) + iinfo->i_lenEAttr;
+ iinfo->i_checkpoint = le32_to_cpu(fe->checkpoint);
} else {
inode->i_blocks = le64_to_cpu(efe->logicalBlocksRecorded) <<
(inode->i_sb->s_blocksize_bits - 9);
- if (udf_stamp_to_time(&convtime, &convtime_usec,
- lets_to_cpu(efe->accessTime))) {
- inode->i_atime.tv_sec = convtime;
- inode->i_atime.tv_nsec = convtime_usec * 1000;
- } else {
+ if (!udf_disk_stamp_to_time(&inode->i_atime, efe->accessTime))
inode->i_atime = sbi->s_record_time;
- }
- if (udf_stamp_to_time(&convtime, &convtime_usec,
- lets_to_cpu(efe->modificationTime))) {
- inode->i_mtime.tv_sec = convtime;
- inode->i_mtime.tv_nsec = convtime_usec * 1000;
- } else {
+ if (!udf_disk_stamp_to_time(&inode->i_mtime,
+ efe->modificationTime))
inode->i_mtime = sbi->s_record_time;
- }
- if (udf_stamp_to_time(&convtime, &convtime_usec,
- lets_to_cpu(efe->createTime))) {
- iinfo->i_crtime.tv_sec = convtime;
- iinfo->i_crtime.tv_nsec = convtime_usec * 1000;
- } else {
+ if (!udf_disk_stamp_to_time(&iinfo->i_crtime, efe->createTime))
iinfo->i_crtime = sbi->s_record_time;
- }
- if (udf_stamp_to_time(&convtime, &convtime_usec,
- lets_to_cpu(efe->attrTime))) {
- inode->i_ctime.tv_sec = convtime;
- inode->i_ctime.tv_nsec = convtime_usec * 1000;
- } else {
+ if (!udf_disk_stamp_to_time(&inode->i_ctime, efe->attrTime))
inode->i_ctime = sbi->s_record_time;
- }
iinfo->i_unique = le64_to_cpu(efe->uniqueID);
iinfo->i_lenEAttr = le32_to_cpu(efe->lengthExtendedAttr);
iinfo->i_lenAlloc = le32_to_cpu(efe->lengthAllocDescs);
- offset = sizeof(struct extendedFileEntry) +
- iinfo->i_lenEAttr;
+ iinfo->i_checkpoint = le32_to_cpu(efe->checkpoint);
}
switch (fe->icbTag.fileType) {
@@ -1338,6 +1499,7 @@ static void udf_fill_inode(struct inode *inode, struct buffer_head *bh)
case ICBTAG_FILE_TYPE_REALTIME:
case ICBTAG_FILE_TYPE_REGULAR:
case ICBTAG_FILE_TYPE_UNDEF:
+ case ICBTAG_FILE_TYPE_VAT20:
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
inode->i_data.a_ops = &udf_adinicb_aops;
else
@@ -1360,13 +1522,21 @@ static void udf_fill_inode(struct inode *inode, struct buffer_head *bh)
break;
case ICBTAG_FILE_TYPE_SYMLINK:
inode->i_data.a_ops = &udf_symlink_aops;
- inode->i_op = &page_symlink_inode_operations;
+ inode->i_op = &udf_symlink_inode_operations;
inode->i_mode = S_IFLNK | S_IRWXUGO;
break;
+ case ICBTAG_FILE_TYPE_MAIN:
+ udf_debug("METADATA FILE-----\n");
+ break;
+ case ICBTAG_FILE_TYPE_MIRROR:
+ udf_debug("METADATA MIRROR FILE-----\n");
+ break;
+ case ICBTAG_FILE_TYPE_BITMAP:
+ udf_debug("METADATA BITMAP FILE-----\n");
+ break;
default:
- printk(KERN_ERR "udf: udf_fill_inode(ino %ld) failed unknown "
- "file type=%d\n", inode->i_ino,
- fe->icbTag.fileType);
+ udf_err(inode->i_sb, "(ino %ld) failed unknown file type=%d\n",
+ inode->i_ino, fe->icbTag.fileType);
make_bad_inode(inode);
return;
}
@@ -1389,17 +1559,17 @@ static int udf_alloc_i_data(struct inode *inode, size_t size)
iinfo->i_ext.i_data = kmalloc(size, GFP_KERNEL);
if (!iinfo->i_ext.i_data) {
- printk(KERN_ERR "udf:udf_alloc_i_data (ino %ld) "
- "no free memory\n", inode->i_ino);
+ udf_err(inode->i_sb, "(ino %ld) no free memory\n",
+ inode->i_ino);
return -ENOMEM;
}
return 0;
}
-static mode_t udf_convert_permissions(struct fileEntry *fe)
+static umode_t udf_convert_permissions(struct fileEntry *fe)
{
- mode_t mode;
+ umode_t mode;
uint32_t permissions;
uint32_t flags;
@@ -1416,33 +1586,12 @@ static mode_t udf_convert_permissions(struct fileEntry *fe)
return mode;
}
-/*
- * udf_write_inode
- *
- * PURPOSE
- * Write out the specified inode.
- *
- * DESCRIPTION
- * This routine is called whenever an inode is synced.
- * Currently this routine is just a placeholder.
- *
- * HISTORY
- * July 1, 1997 - Andrew E. Mileski
- * Written, tested, and released.
- */
-
-int udf_write_inode(struct inode *inode, int sync)
+int udf_write_inode(struct inode *inode, struct writeback_control *wbc)
{
- int ret;
-
- lock_kernel();
- ret = udf_update_inode(inode, sync);
- unlock_kernel();
-
- return ret;
+ return udf_update_inode(inode, wbc->sync_mode == WB_SYNC_ALL);
}
-int udf_sync_inode(struct inode *inode)
+static int udf_sync_inode(struct inode *inode)
{
return udf_update_inode(inode, 1);
}
@@ -1452,29 +1601,28 @@ static int udf_update_inode(struct inode *inode, int do_sync)
struct buffer_head *bh = NULL;
struct fileEntry *fe;
struct extendedFileEntry *efe;
+ uint64_t lb_recorded;
uint32_t udfperms;
uint16_t icbflags;
uint16_t crclen;
- kernel_timestamp cpu_time;
int err = 0;
struct udf_sb_info *sbi = UDF_SB(inode->i_sb);
unsigned char blocksize_bits = inode->i_sb->s_blocksize_bits;
struct udf_inode_info *iinfo = UDF_I(inode);
- bh = udf_tread(inode->i_sb,
- udf_get_lb_pblock(inode->i_sb,
- iinfo->i_location, 0));
+ bh = udf_tgetblk(inode->i_sb,
+ udf_get_lb_pblock(inode->i_sb, &iinfo->i_location, 0));
if (!bh) {
- udf_debug("bread failure\n");
- return -EIO;
+ udf_debug("getblk failure\n");
+ return -ENOMEM;
}
- memset(bh->b_data, 0x00, inode->i_sb->s_blocksize);
-
+ lock_buffer(bh);
+ memset(bh->b_data, 0, inode->i_sb->s_blocksize);
fe = (struct fileEntry *)bh->b_data;
efe = (struct extendedFileEntry *)bh->b_data;
- if (fe->descTag.tagIdent == cpu_to_le16(TAG_IDENT_USE)) {
+ if (iinfo->i_use) {
struct unallocSpaceEntry *use =
(struct unallocSpaceEntry *)bh->b_data;
@@ -1482,31 +1630,29 @@ static int udf_update_inode(struct inode *inode, int do_sync)
memcpy(bh->b_data + sizeof(struct unallocSpaceEntry),
iinfo->i_ext.i_data, inode->i_sb->s_blocksize -
sizeof(struct unallocSpaceEntry));
+ use->descTag.tagIdent = cpu_to_le16(TAG_IDENT_USE);
+ use->descTag.tagLocation =
+ cpu_to_le32(iinfo->i_location.logicalBlockNum);
crclen = sizeof(struct unallocSpaceEntry) +
- iinfo->i_lenAlloc - sizeof(tag);
- use->descTag.tagLocation = cpu_to_le32(
- iinfo->i_location.
- logicalBlockNum);
+ iinfo->i_lenAlloc - sizeof(struct tag);
use->descTag.descCRCLength = cpu_to_le16(crclen);
- use->descTag.descCRC = cpu_to_le16(udf_crc((char *)use +
- sizeof(tag), crclen,
- 0));
+ use->descTag.descCRC = cpu_to_le16(crc_itu_t(0, (char *)use +
+ sizeof(struct tag),
+ crclen));
use->descTag.tagChecksum = udf_tag_checksum(&use->descTag);
- mark_buffer_dirty(bh);
- brelse(bh);
- return err;
+ goto out;
}
if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_UID_FORGET))
fe->uid = cpu_to_le32(-1);
else
- fe->uid = cpu_to_le32(inode->i_uid);
+ fe->uid = cpu_to_le32(i_uid_read(inode));
if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_GID_FORGET))
fe->gid = cpu_to_le32(-1);
else
- fe->gid = cpu_to_le32(inode->i_gid);
+ fe->gid = cpu_to_le32(i_gid_read(inode));
udfperms = ((inode->i_mode & S_IRWXO)) |
((inode->i_mode & S_IRWXG) << 2) |
@@ -1526,23 +1672,23 @@ static int udf_update_inode(struct inode *inode, int do_sync)
fe->informationLength = cpu_to_le64(inode->i_size);
if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
- regid *eid;
+ struct regid *eid;
struct deviceSpec *dsea =
(struct deviceSpec *)udf_get_extendedattr(inode, 12, 1);
if (!dsea) {
dsea = (struct deviceSpec *)
udf_add_extendedattr(inode,
sizeof(struct deviceSpec) +
- sizeof(regid), 12, 0x3);
+ sizeof(struct regid), 12, 0x3);
dsea->attrType = cpu_to_le32(12);
dsea->attrSubtype = 1;
dsea->attrLength = cpu_to_le32(
sizeof(struct deviceSpec) +
- sizeof(regid));
- dsea->impUseLength = cpu_to_le32(sizeof(regid));
+ sizeof(struct regid));
+ dsea->impUseLength = cpu_to_le32(sizeof(struct regid));
}
- eid = (regid *)dsea->impUse;
- memset(eid, 0, sizeof(regid));
+ eid = (struct regid *)dsea->impUse;
+ memset(eid, 0, sizeof(struct regid));
strcpy(eid->ident, UDF_ID_DEVELOPER);
eid->identSuffix[0] = UDF_OS_CLASS_UNIX;
eid->identSuffix[1] = UDF_OS_ID_LINUX;
@@ -1550,27 +1696,30 @@ static int udf_update_inode(struct inode *inode, int do_sync)
dsea->minorDeviceIdent = cpu_to_le32(iminor(inode));
}
+ if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
+ lb_recorded = 0; /* No extents => no blocks! */
+ else
+ lb_recorded =
+ (inode->i_blocks + (1 << (blocksize_bits - 9)) - 1) >>
+ (blocksize_bits - 9);
+
if (iinfo->i_efe == 0) {
memcpy(bh->b_data + sizeof(struct fileEntry),
iinfo->i_ext.i_data,
inode->i_sb->s_blocksize - sizeof(struct fileEntry));
- fe->logicalBlocksRecorded = cpu_to_le64(
- (inode->i_blocks + (1 << (blocksize_bits - 9)) - 1) >>
- (blocksize_bits - 9));
-
- if (udf_time_to_stamp(&cpu_time, inode->i_atime))
- fe->accessTime = cpu_to_lets(cpu_time);
- if (udf_time_to_stamp(&cpu_time, inode->i_mtime))
- fe->modificationTime = cpu_to_lets(cpu_time);
- if (udf_time_to_stamp(&cpu_time, inode->i_ctime))
- fe->attrTime = cpu_to_lets(cpu_time);
- memset(&(fe->impIdent), 0, sizeof(regid));
+ fe->logicalBlocksRecorded = cpu_to_le64(lb_recorded);
+
+ udf_time_to_disk_stamp(&fe->accessTime, inode->i_atime);
+ udf_time_to_disk_stamp(&fe->modificationTime, inode->i_mtime);
+ udf_time_to_disk_stamp(&fe->attrTime, inode->i_ctime);
+ memset(&(fe->impIdent), 0, sizeof(struct regid));
strcpy(fe->impIdent.ident, UDF_ID_DEVELOPER);
fe->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX;
fe->impIdent.identSuffix[1] = UDF_OS_ID_LINUX;
fe->uniqueID = cpu_to_le64(iinfo->i_unique);
fe->lengthExtendedAttr = cpu_to_le32(iinfo->i_lenEAttr);
fe->lengthAllocDescs = cpu_to_le32(iinfo->i_lenAlloc);
+ fe->checkpoint = cpu_to_le32(iinfo->i_checkpoint);
fe->descTag.tagIdent = cpu_to_le16(TAG_IDENT_FE);
crclen = sizeof(struct fileEntry);
} else {
@@ -1579,9 +1728,7 @@ static int udf_update_inode(struct inode *inode, int do_sync)
inode->i_sb->s_blocksize -
sizeof(struct extendedFileEntry));
efe->objectSize = cpu_to_le64(inode->i_size);
- efe->logicalBlocksRecorded = cpu_to_le64(
- (inode->i_blocks + (1 << (blocksize_bits - 9)) - 1) >>
- (blocksize_bits - 9));
+ efe->logicalBlocksRecorded = cpu_to_le64(lb_recorded);
if (iinfo->i_crtime.tv_sec > inode->i_atime.tv_sec ||
(iinfo->i_crtime.tv_sec == inode->i_atime.tv_sec &&
@@ -1598,22 +1745,19 @@ static int udf_update_inode(struct inode *inode, int do_sync)
iinfo->i_crtime.tv_nsec > inode->i_ctime.tv_nsec))
iinfo->i_crtime = inode->i_ctime;
- if (udf_time_to_stamp(&cpu_time, inode->i_atime))
- efe->accessTime = cpu_to_lets(cpu_time);
- if (udf_time_to_stamp(&cpu_time, inode->i_mtime))
- efe->modificationTime = cpu_to_lets(cpu_time);
- if (udf_time_to_stamp(&cpu_time, iinfo->i_crtime))
- efe->createTime = cpu_to_lets(cpu_time);
- if (udf_time_to_stamp(&cpu_time, inode->i_ctime))
- efe->attrTime = cpu_to_lets(cpu_time);
+ udf_time_to_disk_stamp(&efe->accessTime, inode->i_atime);
+ udf_time_to_disk_stamp(&efe->modificationTime, inode->i_mtime);
+ udf_time_to_disk_stamp(&efe->createTime, iinfo->i_crtime);
+ udf_time_to_disk_stamp(&efe->attrTime, inode->i_ctime);
- memset(&(efe->impIdent), 0, sizeof(regid));
+ memset(&(efe->impIdent), 0, sizeof(struct regid));
strcpy(efe->impIdent.ident, UDF_ID_DEVELOPER);
efe->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX;
efe->impIdent.identSuffix[1] = UDF_OS_ID_LINUX;
efe->uniqueID = cpu_to_le64(iinfo->i_unique);
efe->lengthExtendedAttr = cpu_to_le32(iinfo->i_lenEAttr);
efe->lengthAllocDescs = cpu_to_le32(iinfo->i_lenAlloc);
+ efe->checkpoint = cpu_to_le32(iinfo->i_checkpoint);
efe->descTag.tagIdent = cpu_to_le16(TAG_IDENT_EFE);
crclen = sizeof(struct extendedFileEntry);
}
@@ -1657,21 +1801,23 @@ static int udf_update_inode(struct inode *inode, int do_sync)
fe->descTag.tagSerialNum = cpu_to_le16(sbi->s_serial_number);
fe->descTag.tagLocation = cpu_to_le32(
iinfo->i_location.logicalBlockNum);
- crclen += iinfo->i_lenEAttr + iinfo->i_lenAlloc -
- sizeof(tag);
+ crclen += iinfo->i_lenEAttr + iinfo->i_lenAlloc - sizeof(struct tag);
fe->descTag.descCRCLength = cpu_to_le16(crclen);
- fe->descTag.descCRC = cpu_to_le16(udf_crc((char *)fe + sizeof(tag),
- crclen, 0));
+ fe->descTag.descCRC = cpu_to_le16(crc_itu_t(0, (char *)fe + sizeof(struct tag),
+ crclen));
fe->descTag.tagChecksum = udf_tag_checksum(&fe->descTag);
+out:
+ set_buffer_uptodate(bh);
+ unlock_buffer(bh);
+
/* write the data blocks */
mark_buffer_dirty(bh);
if (do_sync) {
sync_dirty_buffer(bh);
- if (buffer_req(bh) && !buffer_uptodate(bh)) {
- printk(KERN_WARNING "IO error syncing udf inode "
- "[%s:%08lx]\n", inode->i_sb->s_id,
- inode->i_ino);
+ if (buffer_write_io_error(bh)) {
+ udf_warn(inode->i_sb, "IO error syncing udf inode [%08lx]\n",
+ inode->i_ino);
err = -EIO;
}
}
@@ -1680,7 +1826,7 @@ static int udf_update_inode(struct inode *inode, int do_sync)
return err;
}
-struct inode *udf_iget(struct super_block *sb, kernel_lb_addr ino)
+struct inode *udf_iget(struct super_block *sb, struct kernel_lb_addr *ino)
{
unsigned long block = udf_get_lb_pblock(sb, ino, 0);
struct inode *inode = iget_locked(sb, block);
@@ -1689,7 +1835,7 @@ struct inode *udf_iget(struct super_block *sb, kernel_lb_addr ino)
return NULL;
if (inode->i_state & I_NEW) {
- memcpy(&UDF_I(inode)->i_location, &ino, sizeof(kernel_lb_addr));
+ memcpy(&UDF_I(inode)->i_location, ino, sizeof(struct kernel_lb_addr));
__udf_read_inode(inode);
unlock_new_inode(inode);
}
@@ -1697,10 +1843,10 @@ struct inode *udf_iget(struct super_block *sb, kernel_lb_addr ino)
if (is_bad_inode(inode))
goto out_iput;
- if (ino.logicalBlockNum >= UDF_SB(sb)->
- s_partmaps[ino.partitionReferenceNum].s_partition_len) {
+ if (ino->logicalBlockNum >= UDF_SB(sb)->
+ s_partmaps[ino->partitionReferenceNum].s_partition_len) {
udf_debug("block=%d, partition=%d out of range\n",
- ino.logicalBlockNum, ino.partitionReferenceNum);
+ ino->logicalBlockNum, ino->partitionReferenceNum);
make_bad_inode(inode);
goto out_iput;
}
@@ -1712,14 +1858,13 @@ struct inode *udf_iget(struct super_block *sb, kernel_lb_addr ino)
return NULL;
}
-int8_t udf_add_aext(struct inode *inode, struct extent_position *epos,
- kernel_lb_addr eloc, uint32_t elen, int inc)
+int udf_add_aext(struct inode *inode, struct extent_position *epos,
+ struct kernel_lb_addr *eloc, uint32_t elen, int inc)
{
int adsize;
- short_ad *sad = NULL;
- long_ad *lad = NULL;
+ struct short_ad *sad = NULL;
+ struct long_ad *lad = NULL;
struct allocExtDesc *aed;
- int8_t etype;
uint8_t *ptr;
struct udf_inode_info *iinfo = UDF_I(inode);
@@ -1731,28 +1876,28 @@ int8_t udf_add_aext(struct inode *inode, struct extent_position *epos,
ptr = epos->bh->b_data + epos->offset;
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
- adsize = sizeof(short_ad);
+ adsize = sizeof(struct short_ad);
else if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
- adsize = sizeof(long_ad);
+ adsize = sizeof(struct long_ad);
else
- return -1;
+ return -EIO;
if (epos->offset + (2 * adsize) > inode->i_sb->s_blocksize) {
- char *sptr, *dptr;
+ unsigned char *sptr, *dptr;
struct buffer_head *nbh;
int err, loffset;
- kernel_lb_addr obloc = epos->block;
+ struct kernel_lb_addr obloc = epos->block;
epos->block.logicalBlockNum = udf_new_block(inode->i_sb, NULL,
obloc.partitionReferenceNum,
obloc.logicalBlockNum, &err);
if (!epos->block.logicalBlockNum)
- return -1;
+ return -ENOSPC;
nbh = udf_tgetblk(inode->i_sb, udf_get_lb_pblock(inode->i_sb,
- epos->block,
+ &epos->block,
0));
if (!nbh)
- return -1;
+ return -EIO;
lock_buffer(nbh);
memset(nbh->b_data, 0x00, inode->i_sb->s_blocksize);
set_buffer_uptodate(nbh);
@@ -1778,9 +1923,7 @@ int8_t udf_add_aext(struct inode *inode, struct extent_position *epos,
if (epos->bh) {
aed = (struct allocExtDesc *)epos->bh->b_data;
- aed->lengthAllocDescs =
- cpu_to_le32(le32_to_cpu(
- aed->lengthAllocDescs) + adsize);
+ le32_add_cpu(&aed->lengthAllocDescs, adsize);
} else {
iinfo->i_lenAlloc += adsize;
mark_inode_dirty(inode);
@@ -1788,20 +1931,20 @@ int8_t udf_add_aext(struct inode *inode, struct extent_position *epos,
}
if (UDF_SB(inode->i_sb)->s_udfrev >= 0x0200)
udf_new_tag(nbh->b_data, TAG_IDENT_AED, 3, 1,
- epos->block.logicalBlockNum, sizeof(tag));
+ epos->block.logicalBlockNum, sizeof(struct tag));
else
udf_new_tag(nbh->b_data, TAG_IDENT_AED, 2, 1,
- epos->block.logicalBlockNum, sizeof(tag));
+ epos->block.logicalBlockNum, sizeof(struct tag));
switch (iinfo->i_alloc_type) {
case ICBTAG_FLAG_AD_SHORT:
- sad = (short_ad *)sptr;
+ sad = (struct short_ad *)sptr;
sad->extLength = cpu_to_le32(EXT_NEXT_EXTENT_ALLOCDECS |
inode->i_sb->s_blocksize);
sad->extPosition =
cpu_to_le32(epos->block.logicalBlockNum);
break;
case ICBTAG_FLAG_AD_LONG:
- lad = (long_ad *)sptr;
+ lad = (struct long_ad *)sptr;
lad->extLength = cpu_to_le32(EXT_NEXT_EXTENT_ALLOCDECS |
inode->i_sb->s_blocksize);
lad->extLocation = cpu_to_lelb(epos->block);
@@ -1823,16 +1966,14 @@ int8_t udf_add_aext(struct inode *inode, struct extent_position *epos,
epos->bh = nbh;
}
- etype = udf_write_aext(inode, epos, eloc, elen, inc);
+ udf_write_aext(inode, epos, eloc, elen, inc);
if (!epos->bh) {
iinfo->i_lenAlloc += adsize;
mark_inode_dirty(inode);
} else {
aed = (struct allocExtDesc *)epos->bh->b_data;
- aed->lengthAllocDescs =
- cpu_to_le32(le32_to_cpu(aed->lengthAllocDescs) +
- adsize);
+ le32_add_cpu(&aed->lengthAllocDescs, adsize);
if (!UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_STRICT) ||
UDF_SB(inode->i_sb)->s_udfrev >= 0x0201)
udf_update_tag(epos->bh->b_data,
@@ -1843,16 +1984,16 @@ int8_t udf_add_aext(struct inode *inode, struct extent_position *epos,
mark_buffer_dirty_inode(epos->bh, inode);
}
- return etype;
+ return 0;
}
-int8_t udf_write_aext(struct inode *inode, struct extent_position *epos,
- kernel_lb_addr eloc, uint32_t elen, int inc)
+void udf_write_aext(struct inode *inode, struct extent_position *epos,
+ struct kernel_lb_addr *eloc, uint32_t elen, int inc)
{
int adsize;
uint8_t *ptr;
- short_ad *sad;
- long_ad *lad;
+ struct short_ad *sad;
+ struct long_ad *lad;
struct udf_inode_info *iinfo = UDF_I(inode);
if (!epos->bh)
@@ -1864,20 +2005,20 @@ int8_t udf_write_aext(struct inode *inode, struct extent_position *epos,
switch (iinfo->i_alloc_type) {
case ICBTAG_FLAG_AD_SHORT:
- sad = (short_ad *)ptr;
+ sad = (struct short_ad *)ptr;
sad->extLength = cpu_to_le32(elen);
- sad->extPosition = cpu_to_le32(eloc.logicalBlockNum);
- adsize = sizeof(short_ad);
+ sad->extPosition = cpu_to_le32(eloc->logicalBlockNum);
+ adsize = sizeof(struct short_ad);
break;
case ICBTAG_FLAG_AD_LONG:
- lad = (long_ad *)ptr;
+ lad = (struct long_ad *)ptr;
lad->extLength = cpu_to_le32(elen);
- lad->extLocation = cpu_to_lelb(eloc);
+ lad->extLocation = cpu_to_lelb(*eloc);
memset(lad->impUse, 0x00, sizeof(lad->impUse));
- adsize = sizeof(long_ad);
+ adsize = sizeof(struct long_ad);
break;
default:
- return -1;
+ return;
}
if (epos->bh) {
@@ -1896,12 +2037,10 @@ int8_t udf_write_aext(struct inode *inode, struct extent_position *epos,
if (inc)
epos->offset += adsize;
-
- return (elen >> 30);
}
int8_t udf_next_aext(struct inode *inode, struct extent_position *epos,
- kernel_lb_addr *eloc, uint32_t *elen, int inc)
+ struct kernel_lb_addr *eloc, uint32_t *elen, int inc)
{
int8_t etype;
@@ -1911,7 +2050,7 @@ int8_t udf_next_aext(struct inode *inode, struct extent_position *epos,
epos->block = *eloc;
epos->offset = sizeof(struct allocExtDesc);
brelse(epos->bh);
- block = udf_get_lb_pblock(inode->i_sb, epos->block, 0);
+ block = udf_get_lb_pblock(inode->i_sb, &epos->block, 0);
epos->bh = udf_tread(inode->i_sb, block);
if (!epos->bh) {
udf_debug("reading block %d failed!\n", block);
@@ -1923,13 +2062,13 @@ int8_t udf_next_aext(struct inode *inode, struct extent_position *epos,
}
int8_t udf_current_aext(struct inode *inode, struct extent_position *epos,
- kernel_lb_addr *eloc, uint32_t *elen, int inc)
+ struct kernel_lb_addr *eloc, uint32_t *elen, int inc)
{
int alen;
int8_t etype;
uint8_t *ptr;
- short_ad *sad;
- long_ad *lad;
+ struct short_ad *sad;
+ struct long_ad *lad;
struct udf_inode_info *iinfo = UDF_I(inode);
if (!epos->bh) {
@@ -1969,8 +2108,7 @@ int8_t udf_current_aext(struct inode *inode, struct extent_position *epos,
*elen = le32_to_cpu(lad->extLength) & UDF_EXTENT_LENGTH_MASK;
break;
default:
- udf_debug("alloc_type = %d unsupported\n",
- iinfo->i_alloc_type);
+ udf_debug("alloc_type = %d unsupported\n", iinfo->i_alloc_type);
return -1;
}
@@ -1978,9 +2116,9 @@ int8_t udf_current_aext(struct inode *inode, struct extent_position *epos,
}
static int8_t udf_insert_aext(struct inode *inode, struct extent_position epos,
- kernel_lb_addr neloc, uint32_t nelen)
+ struct kernel_lb_addr neloc, uint32_t nelen)
{
- kernel_lb_addr oeloc;
+ struct kernel_lb_addr oeloc;
uint32_t oelen;
int8_t etype;
@@ -1988,18 +2126,18 @@ static int8_t udf_insert_aext(struct inode *inode, struct extent_position epos,
get_bh(epos.bh);
while ((etype = udf_next_aext(inode, &epos, &oeloc, &oelen, 0)) != -1) {
- udf_write_aext(inode, &epos, neloc, nelen, 1);
+ udf_write_aext(inode, &epos, &neloc, nelen, 1);
neloc = oeloc;
nelen = (etype << 30) | oelen;
}
- udf_add_aext(inode, &epos, neloc, nelen, 1);
+ udf_add_aext(inode, &epos, &neloc, nelen, 1);
brelse(epos.bh);
return (nelen >> 30);
}
int8_t udf_delete_aext(struct inode *inode, struct extent_position epos,
- kernel_lb_addr eloc, uint32_t elen)
+ struct kernel_lb_addr eloc, uint32_t elen)
{
struct extent_position oepos;
int adsize;
@@ -2014,9 +2152,9 @@ int8_t udf_delete_aext(struct inode *inode, struct extent_position epos,
iinfo = UDF_I(inode);
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
- adsize = sizeof(short_ad);
+ adsize = sizeof(struct short_ad);
else if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
- adsize = sizeof(long_ad);
+ adsize = sizeof(struct long_ad);
else
adsize = 0;
@@ -2025,7 +2163,7 @@ int8_t udf_delete_aext(struct inode *inode, struct extent_position epos,
return -1;
while ((etype = udf_next_aext(inode, &epos, &eloc, &elen, 1)) != -1) {
- udf_write_aext(inode, &oepos, eloc, (etype << 30) | elen, 1);
+ udf_write_aext(inode, &oepos, &eloc, (etype << 30) | elen, 1);
if (oepos.bh != epos.bh) {
oepos.block = epos.block;
brelse(oepos.bh);
@@ -2034,21 +2172,19 @@ int8_t udf_delete_aext(struct inode *inode, struct extent_position epos,
oepos.offset = epos.offset - adsize;
}
}
- memset(&eloc, 0x00, sizeof(kernel_lb_addr));
+ memset(&eloc, 0x00, sizeof(struct kernel_lb_addr));
elen = 0;
if (epos.bh != oepos.bh) {
- udf_free_blocks(inode->i_sb, inode, epos.block, 0, 1);
- udf_write_aext(inode, &oepos, eloc, elen, 1);
- udf_write_aext(inode, &oepos, eloc, elen, 1);
+ udf_free_blocks(inode->i_sb, inode, &epos.block, 0, 1);
+ udf_write_aext(inode, &oepos, &eloc, elen, 1);
+ udf_write_aext(inode, &oepos, &eloc, elen, 1);
if (!oepos.bh) {
iinfo->i_lenAlloc -= (adsize * 2);
mark_inode_dirty(inode);
} else {
aed = (struct allocExtDesc *)oepos.bh->b_data;
- aed->lengthAllocDescs =
- cpu_to_le32(le32_to_cpu(aed->lengthAllocDescs) -
- (2 * adsize));
+ le32_add_cpu(&aed->lengthAllocDescs, -(2 * adsize));
if (!UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_STRICT) ||
UDF_SB(inode->i_sb)->s_udfrev >= 0x0201)
udf_update_tag(oepos.bh->b_data,
@@ -2059,15 +2195,13 @@ int8_t udf_delete_aext(struct inode *inode, struct extent_position epos,
mark_buffer_dirty_inode(oepos.bh, inode);
}
} else {
- udf_write_aext(inode, &oepos, eloc, elen, 1);
+ udf_write_aext(inode, &oepos, &eloc, elen, 1);
if (!oepos.bh) {
iinfo->i_lenAlloc -= adsize;
mark_inode_dirty(inode);
} else {
aed = (struct allocExtDesc *)oepos.bh->b_data;
- aed->lengthAllocDescs =
- cpu_to_le32(le32_to_cpu(aed->lengthAllocDescs) -
- adsize);
+ le32_add_cpu(&aed->lengthAllocDescs, -adsize);
if (!UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_STRICT) ||
UDF_SB(inode->i_sb)->s_udfrev >= 0x0201)
udf_update_tag(oepos.bh->b_data,
@@ -2086,7 +2220,7 @@ int8_t udf_delete_aext(struct inode *inode, struct extent_position epos,
}
int8_t inode_bmap(struct inode *inode, sector_t block,
- struct extent_position *pos, kernel_lb_addr *eloc,
+ struct extent_position *pos, struct kernel_lb_addr *eloc,
uint32_t *elen, sector_t *offset)
{
unsigned char blocksize_bits = inode->i_sb->s_blocksize_bits;
@@ -2095,17 +2229,13 @@ int8_t inode_bmap(struct inode *inode, sector_t block,
int8_t etype;
struct udf_inode_info *iinfo;
- if (block < 0) {
- printk(KERN_ERR "udf: inode_bmap: block < 0\n");
- return -1;
- }
-
iinfo = UDF_I(inode);
- pos->offset = 0;
- pos->block = iinfo->i_location;
- pos->bh = NULL;
+ if (!udf_read_extent_cache(inode, bcount, &lbcount, pos)) {
+ pos->offset = 0;
+ pos->block = iinfo->i_location;
+ pos->bh = NULL;
+ }
*elen = 0;
-
do {
etype = udf_next_aext(inode, pos, eloc, elen, 1);
if (etype == -1) {
@@ -2115,7 +2245,8 @@ int8_t inode_bmap(struct inode *inode, sector_t block,
}
lbcount += *elen;
} while (lbcount <= bcount);
-
+ /* update extent cache */
+ udf_update_extent_cache(inode, lbcount - *elen, pos, 1);
*offset = (bcount + *elen - lbcount) >> blocksize_bits;
return etype;
@@ -2123,21 +2254,21 @@ int8_t inode_bmap(struct inode *inode, sector_t block,
long udf_block_map(struct inode *inode, sector_t block)
{
- kernel_lb_addr eloc;
+ struct kernel_lb_addr eloc;
uint32_t elen;
sector_t offset;
struct extent_position epos = {};
int ret;
- lock_kernel();
+ down_read(&UDF_I(inode)->i_data_sem);
if (inode_bmap(inode, block, &epos, &eloc, &elen, &offset) ==
(EXT_RECORDED_ALLOCATED >> 30))
- ret = udf_get_lb_pblock(inode->i_sb, eloc, offset);
+ ret = udf_get_lb_pblock(inode->i_sb, &eloc, offset);
else
ret = 0;
- unlock_kernel();
+ up_read(&UDF_I(inode)->i_data_sem);
brelse(epos.bh);
if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_VARCONV))
diff --git a/fs/udf/lowlevel.c b/fs/udf/lowlevel.c
index 579bae71e67..6583fe9b064 100644
--- a/fs/udf/lowlevel.c
+++ b/fs/udf/lowlevel.c
@@ -23,7 +23,6 @@
#include <linux/cdrom.h>
#include <asm/uaccess.h>
-#include <linux/udf_fs.h>
#include "udf_sb.h"
unsigned int udf_get_last_session(struct super_block *sb)
@@ -37,14 +36,10 @@ unsigned int udf_get_last_session(struct super_block *sb)
ms_info.addr_format = CDROM_LBA;
i = ioctl_by_bdev(bdev, CDROMMULTISESSION, (unsigned long)&ms_info);
-#define WE_OBEY_THE_WRITTEN_STANDARDS 1
-
if (i == 0) {
udf_debug("XA disk: %s, vol_desc_start=%d\n",
- (ms_info.xa_flag ? "yes" : "no"), ms_info.addr.lba);
-#if WE_OBEY_THE_WRITTEN_STANDARDS
+ ms_info.xa_flag ? "yes" : "no", ms_info.addr.lba);
if (ms_info.xa_flag) /* necessary for a valid ms_info.addr */
-#endif
vol_desc_start = ms_info.addr.lba;
} else {
udf_debug("CDROMMULTISESSION not supported: rc=%d\n", i);
@@ -57,7 +52,12 @@ unsigned long udf_get_last_block(struct super_block *sb)
struct block_device *bdev = sb->s_bdev;
unsigned long lblock = 0;
- if (ioctl_by_bdev(bdev, CDROM_LAST_WRITTEN, (unsigned long) &lblock))
+ /*
+ * ioctl failed or returned obviously bogus value?
+ * Try using the device size...
+ */
+ if (ioctl_by_bdev(bdev, CDROM_LAST_WRITTEN, (unsigned long) &lblock) ||
+ lblock == 0)
lblock = bdev->bd_inode->i_size >> sb->s_blocksize_bits;
if (lblock)
diff --git a/fs/udf/misc.c b/fs/udf/misc.c
index a1d6da0caf7..c175b4dabc1 100644
--- a/fs/udf/misc.c
+++ b/fs/udf/misc.c
@@ -23,8 +23,8 @@
#include <linux/fs.h>
#include <linux/string.h>
-#include <linux/udf_fs.h>
#include <linux/buffer_head.h>
+#include <linux/crc-itu-t.h>
#include "udf_i.h"
#include "udf_sb.h"
@@ -134,10 +134,10 @@ struct genericFormat *udf_add_extendedattr(struct inode *inode, uint32_t size,
}
}
/* rewrite CRC + checksum of eahd */
- crclen = sizeof(struct extendedAttrHeaderDesc) - sizeof(tag);
+ crclen = sizeof(struct extendedAttrHeaderDesc) - sizeof(struct tag);
eahd->descTag.descCRCLength = cpu_to_le16(crclen);
- eahd->descTag.descCRC = cpu_to_le16(udf_crc((char *)eahd +
- sizeof(tag), crclen, 0));
+ eahd->descTag.descCRC = cpu_to_le16(crc_itu_t(0, (char *)eahd +
+ sizeof(struct tag), crclen));
eahd->descTag.tagChecksum = udf_tag_checksum(&eahd->descTag);
iinfo->i_lenEAttr += size;
return (struct genericFormat *)&ea[offset];
@@ -202,82 +202,84 @@ struct genericFormat *udf_get_extendedattr(struct inode *inode, uint32_t type,
struct buffer_head *udf_read_tagged(struct super_block *sb, uint32_t block,
uint32_t location, uint16_t *ident)
{
- tag *tag_p;
+ struct tag *tag_p;
struct buffer_head *bh = NULL;
- struct udf_sb_info *sbi = UDF_SB(sb);
+ u8 checksum;
/* Read the block */
if (block == 0xFFFFFFFF)
return NULL;
- bh = udf_tread(sb, block + sbi->s_session);
+ bh = udf_tread(sb, block);
if (!bh) {
- udf_debug("block=%d, location=%d: read failed\n",
- block + sbi->s_session, location);
+ udf_err(sb, "read failed, block=%u, location=%d\n",
+ block, location);
return NULL;
}
- tag_p = (tag *)(bh->b_data);
+ tag_p = (struct tag *)(bh->b_data);
*ident = le16_to_cpu(tag_p->tagIdent);
if (location != le32_to_cpu(tag_p->tagLocation)) {
udf_debug("location mismatch block %u, tag %u != %u\n",
- block + sbi->s_session,
- le32_to_cpu(tag_p->tagLocation), location);
+ block, le32_to_cpu(tag_p->tagLocation), location);
goto error_out;
}
/* Verify the tag checksum */
- if (udf_tag_checksum(tag_p) != tag_p->tagChecksum) {
- printk(KERN_ERR "udf: tag checksum failed block %d\n", block);
+ checksum = udf_tag_checksum(tag_p);
+ if (checksum != tag_p->tagChecksum) {
+ udf_err(sb, "tag checksum failed, block %u: 0x%02x != 0x%02x\n",
+ block, checksum, tag_p->tagChecksum);
goto error_out;
}
/* Verify the tag version */
if (tag_p->descVersion != cpu_to_le16(0x0002U) &&
tag_p->descVersion != cpu_to_le16(0x0003U)) {
- udf_debug("tag version 0x%04x != 0x0002 || 0x0003 block %d\n",
- le16_to_cpu(tag_p->descVersion), block);
+ udf_err(sb, "tag version 0x%04x != 0x0002 || 0x0003, block %u\n",
+ le16_to_cpu(tag_p->descVersion), block);
goto error_out;
}
/* Verify the descriptor CRC */
- if (le16_to_cpu(tag_p->descCRCLength) + sizeof(tag) > sb->s_blocksize ||
- le16_to_cpu(tag_p->descCRC) == udf_crc(bh->b_data + sizeof(tag),
- le16_to_cpu(tag_p->descCRCLength), 0))
+ if (le16_to_cpu(tag_p->descCRCLength) + sizeof(struct tag) > sb->s_blocksize ||
+ le16_to_cpu(tag_p->descCRC) == crc_itu_t(0,
+ bh->b_data + sizeof(struct tag),
+ le16_to_cpu(tag_p->descCRCLength)))
return bh;
- udf_debug("Crc failure block %d: crc = %d, crclen = %d\n",
- block + sbi->s_session, le16_to_cpu(tag_p->descCRC),
+ udf_debug("Crc failure block %d: crc = %d, crclen = %d\n", block,
+ le16_to_cpu(tag_p->descCRC),
le16_to_cpu(tag_p->descCRCLength));
-
error_out:
brelse(bh);
return NULL;
}
-struct buffer_head *udf_read_ptagged(struct super_block *sb, kernel_lb_addr loc,
+struct buffer_head *udf_read_ptagged(struct super_block *sb,
+ struct kernel_lb_addr *loc,
uint32_t offset, uint16_t *ident)
{
return udf_read_tagged(sb, udf_get_lb_pblock(sb, loc, offset),
- loc.logicalBlockNum + offset, ident);
+ loc->logicalBlockNum + offset, ident);
}
void udf_update_tag(char *data, int length)
{
- tag *tptr = (tag *)data;
- length -= sizeof(tag);
+ struct tag *tptr = (struct tag *)data;
+ length -= sizeof(struct tag);
tptr->descCRCLength = cpu_to_le16(length);
- tptr->descCRC = cpu_to_le16(udf_crc(data + sizeof(tag), length, 0));
+ tptr->descCRC = cpu_to_le16(crc_itu_t(0, data + sizeof(struct tag), length));
tptr->tagChecksum = udf_tag_checksum(tptr);
}
void udf_new_tag(char *data, uint16_t ident, uint16_t version, uint16_t snum,
uint32_t loc, int length)
{
- tag *tptr = (tag *)data;
+ struct tag *tptr = (struct tag *)data;
tptr->tagIdent = cpu_to_le16(ident);
tptr->descVersion = cpu_to_le16(version);
tptr->tagSerialNum = cpu_to_le16(snum);
@@ -285,12 +287,12 @@ void udf_new_tag(char *data, uint16_t ident, uint16_t version, uint16_t snum,
udf_update_tag(data, length);
}
-u8 udf_tag_checksum(const tag *t)
+u8 udf_tag_checksum(const struct tag *t)
{
u8 *data = (u8 *)t;
u8 checksum = 0;
int i;
- for (i = 0; i < sizeof(tag); ++i)
+ for (i = 0; i < sizeof(struct tag); ++i)
if (i != 4) /* position of checksum */
checksum += data[i];
return checksum;
diff --git a/fs/udf/namei.c b/fs/udf/namei.c
index 112a5fb0b27..9737cba1357 100644
--- a/fs/udf/namei.c
+++ b/fs/udf/namei.c
@@ -27,13 +27,13 @@
#include <linux/errno.h>
#include <linux/mm.h>
#include <linux/slab.h>
-#include <linux/quotaops.h>
-#include <linux/smp_lock.h>
#include <linux/buffer_head.h>
#include <linux/sched.h>
+#include <linux/crc-itu-t.h>
+#include <linux/exportfs.h>
-static inline int udf_match(int len1, const char *name1, int len2,
- const char *name2)
+static inline int udf_match(int len1, const unsigned char *name1, int len2,
+ const unsigned char *name2)
{
if (len1 != len2)
return 0;
@@ -45,7 +45,7 @@ int udf_write_fi(struct inode *inode, struct fileIdentDesc *cfi,
struct fileIdentDesc *sfi, struct udf_fileident_bh *fibh,
uint8_t *impuse, uint8_t *fileident)
{
- uint16_t crclen = fibh->eoffset - fibh->soffset - sizeof(tag);
+ uint16_t crclen = fibh->eoffset - fibh->soffset - sizeof(struct tag);
uint16_t crc;
int offset;
uint16_t liu = le16_to_cpu(cfi->lengthOfImpUse);
@@ -97,25 +97,23 @@ int udf_write_fi(struct inode *inode, struct fileIdentDesc *cfi,
memset(fibh->ebh->b_data, 0x00, padlen + offset);
}
- crc = udf_crc((uint8_t *)cfi + sizeof(tag),
- sizeof(struct fileIdentDesc) - sizeof(tag), 0);
+ crc = crc_itu_t(0, (uint8_t *)cfi + sizeof(struct tag),
+ sizeof(struct fileIdentDesc) - sizeof(struct tag));
if (fibh->sbh == fibh->ebh) {
- crc = udf_crc((uint8_t *)sfi->impUse,
- crclen + sizeof(tag) -
- sizeof(struct fileIdentDesc), crc);
+ crc = crc_itu_t(crc, (uint8_t *)sfi->impUse,
+ crclen + sizeof(struct tag) -
+ sizeof(struct fileIdentDesc));
} else if (sizeof(struct fileIdentDesc) >= -fibh->soffset) {
- crc = udf_crc(fibh->ebh->b_data +
+ crc = crc_itu_t(crc, fibh->ebh->b_data +
sizeof(struct fileIdentDesc) +
fibh->soffset,
- crclen + sizeof(tag) -
- sizeof(struct fileIdentDesc),
- crc);
+ crclen + sizeof(struct tag) -
+ sizeof(struct fileIdentDesc));
} else {
- crc = udf_crc((uint8_t *)sfi->impUse,
- -fibh->soffset - sizeof(struct fileIdentDesc),
- crc);
- crc = udf_crc(fibh->ebh->b_data, fibh->eoffset, crc);
+ crc = crc_itu_t(crc, (uint8_t *)sfi->impUse,
+ -fibh->soffset - sizeof(struct fileIdentDesc));
+ crc = crc_itu_t(crc, fibh->ebh->b_data, fibh->eoffset);
}
cfi->descTag.descCRC = cpu_to_le16(crc);
@@ -142,62 +140,58 @@ int udf_write_fi(struct inode *inode, struct fileIdentDesc *cfi,
}
static struct fileIdentDesc *udf_find_entry(struct inode *dir,
- struct dentry *dentry,
+ const struct qstr *child,
struct udf_fileident_bh *fibh,
struct fileIdentDesc *cfi)
{
struct fileIdentDesc *fi = NULL;
loff_t f_pos;
int block, flen;
- char fname[UDF_NAME_LEN];
- char *nameptr;
+ unsigned char *fname = NULL;
+ unsigned char *nameptr;
uint8_t lfi;
uint16_t liu;
loff_t size;
- kernel_lb_addr eloc;
+ struct kernel_lb_addr eloc;
uint32_t elen;
sector_t offset;
struct extent_position epos = {};
struct udf_inode_info *dinfo = UDF_I(dir);
+ int isdotdot = child->len == 2 &&
+ child->name[0] == '.' && child->name[1] == '.';
size = udf_ext0_offset(dir) + dir->i_size;
f_pos = udf_ext0_offset(dir);
+ fibh->sbh = fibh->ebh = NULL;
fibh->soffset = fibh->eoffset = f_pos & (dir->i_sb->s_blocksize - 1);
- if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
- fibh->sbh = fibh->ebh = NULL;
- else if (inode_bmap(dir, f_pos >> dir->i_sb->s_blocksize_bits,
- &epos, &eloc, &elen, &offset) ==
- (EXT_RECORDED_ALLOCATED >> 30)) {
- block = udf_get_lb_pblock(dir->i_sb, eloc, offset);
+ if (dinfo->i_alloc_type != ICBTAG_FLAG_AD_IN_ICB) {
+ if (inode_bmap(dir, f_pos >> dir->i_sb->s_blocksize_bits, &epos,
+ &eloc, &elen, &offset) != (EXT_RECORDED_ALLOCATED >> 30))
+ goto out_err;
+ block = udf_get_lb_pblock(dir->i_sb, &eloc, offset);
if ((++offset << dir->i_sb->s_blocksize_bits) < elen) {
if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
- epos.offset -= sizeof(short_ad);
+ epos.offset -= sizeof(struct short_ad);
else if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
- epos.offset -= sizeof(long_ad);
+ epos.offset -= sizeof(struct long_ad);
} else
offset = 0;
fibh->sbh = fibh->ebh = udf_tread(dir->i_sb, block);
- if (!fibh->sbh) {
- brelse(epos.bh);
- return NULL;
- }
- } else {
- brelse(epos.bh);
- return NULL;
+ if (!fibh->sbh)
+ goto out_err;
}
+ fname = kmalloc(UDF_NAME_LEN, GFP_NOFS);
+ if (!fname)
+ goto out_err;
+
while (f_pos < size) {
fi = udf_fileident_read(dir, &f_pos, fibh, cfi, &epos, &eloc,
&elen, &offset);
- if (!fi) {
- if (fibh->sbh != fibh->ebh)
- brelse(fibh->ebh);
- brelse(fibh->sbh);
- brelse(epos.bh);
- return NULL;
- }
+ if (!fi)
+ goto out_err;
liu = le16_to_cpu(cfi->lengthOfImpUse);
lfi = cfi->lengthFileIdent;
@@ -232,60 +226,32 @@ static struct fileIdentDesc *udf_find_entry(struct inode *dir,
continue;
}
+ if ((cfi->fileCharacteristics & FID_FILE_CHAR_PARENT) &&
+ isdotdot)
+ goto out_ok;
+
if (!lfi)
continue;
flen = udf_get_filename(dir->i_sb, nameptr, fname, lfi);
- if (flen && udf_match(flen, fname, dentry->d_name.len,
- dentry->d_name.name)) {
- brelse(epos.bh);
- return fi;
- }
+ if (flen && udf_match(flen, fname, child->len, child->name))
+ goto out_ok;
}
+out_err:
+ fi = NULL;
if (fibh->sbh != fibh->ebh)
brelse(fibh->ebh);
brelse(fibh->sbh);
+out_ok:
brelse(epos.bh);
+ kfree(fname);
- return NULL;
+ return fi;
}
-/*
- * udf_lookup
- *
- * PURPOSE
- * Look-up the inode for a given name.
- *
- * DESCRIPTION
- * Required - lookup_dentry() will return -ENOTDIR if this routine is not
- * available for a directory. The filesystem is useless if this routine is
- * not available for at least the filesystem's root directory.
- *
- * This routine is passed an incomplete dentry - it must be completed by
- * calling d_add(dentry, inode). If the name does not exist, then the
- * specified inode must be set to null. An error should only be returned
- * when the lookup fails for a reason other than the name not existing.
- * Note that the directory inode semaphore is held during the call.
- *
- * Refer to lookup_dentry() in fs/namei.c
- * lookup_dentry() -> lookup() -> real_lookup() -> .
- *
- * PRE-CONDITIONS
- * dir Pointer to inode of parent directory.
- * dentry Pointer to dentry to complete.
- * nd Pointer to lookup nameidata
- *
- * POST-CONDITIONS
- * <return> Zero on success.
- *
- * HISTORY
- * July 1, 1997 - Andrew E. Mileski
- * Written, tested, and released.
- */
-
static struct dentry *udf_lookup(struct inode *dir, struct dentry *dentry,
- struct nameidata *nd)
+ unsigned int flags)
{
struct inode *inode = NULL;
struct fileIdentDesc cfi;
@@ -294,11 +260,10 @@ static struct dentry *udf_lookup(struct inode *dir, struct dentry *dentry,
if (dentry->d_name.len > UDF_NAME_LEN - 2)
return ERR_PTR(-ENAMETOOLONG);
- lock_kernel();
#ifdef UDF_RECOVERY
/* temporary shorthand for specifying files by inode number */
if (!strncmp(dentry->d_name.name, ".B=", 3)) {
- kernel_lb_addr lb = {
+ struct kernel_lb_addr lb = {
.logicalBlockNum = 0,
.partitionReferenceNum =
simple_strtoul(dentry->d_name.name + 3,
@@ -306,27 +271,26 @@ static struct dentry *udf_lookup(struct inode *dir, struct dentry *dentry,
};
inode = udf_iget(dir->i_sb, lb);
if (!inode) {
- unlock_kernel();
return ERR_PTR(-EACCES);
}
} else
#endif /* UDF_RECOVERY */
- if (udf_find_entry(dir, dentry, &fibh, &cfi)) {
+ if (udf_find_entry(dir, &dentry->d_name, &fibh, &cfi)) {
+ struct kernel_lb_addr loc;
+
if (fibh.sbh != fibh.ebh)
brelse(fibh.ebh);
brelse(fibh.sbh);
- inode = udf_iget(dir->i_sb, lelb_to_cpu(cfi.icb.extLocation));
+ loc = lelb_to_cpu(cfi.icb.extLocation);
+ inode = udf_iget(dir->i_sb, &loc);
if (!inode) {
- unlock_kernel();
return ERR_PTR(-EACCES);
}
}
- unlock_kernel();
- d_add(dentry, inode);
- return NULL;
+ return d_splice_alias(inode, dentry);
}
static struct fileIdentDesc *udf_add_entry(struct inode *dir,
@@ -336,32 +300,37 @@ static struct fileIdentDesc *udf_add_entry(struct inode *dir,
{
struct super_block *sb = dir->i_sb;
struct fileIdentDesc *fi = NULL;
- char name[UDF_NAME_LEN], fname[UDF_NAME_LEN];
+ unsigned char *name = NULL;
int namelen;
loff_t f_pos;
- int flen;
- char *nameptr;
loff_t size = udf_ext0_offset(dir) + dir->i_size;
int nfidlen;
uint8_t lfi;
uint16_t liu;
int block;
- kernel_lb_addr eloc;
- uint32_t elen;
+ struct kernel_lb_addr eloc;
+ uint32_t elen = 0;
sector_t offset;
struct extent_position epos = {};
struct udf_inode_info *dinfo;
+ fibh->sbh = fibh->ebh = NULL;
+ name = kmalloc(UDF_NAME_LEN, GFP_NOFS);
+ if (!name) {
+ *err = -ENOMEM;
+ goto out_err;
+ }
+
if (dentry) {
if (!dentry->d_name.len) {
*err = -EINVAL;
- return NULL;
+ goto out_err;
}
namelen = udf_put_filename(sb, dentry->d_name.name, name,
dentry->d_name.len);
if (!namelen) {
*err = -ENAMETOOLONG;
- return NULL;
+ goto out_err;
}
} else {
namelen = 0;
@@ -373,33 +342,30 @@ static struct fileIdentDesc *udf_add_entry(struct inode *dir,
fibh->soffset = fibh->eoffset = f_pos & (dir->i_sb->s_blocksize - 1);
dinfo = UDF_I(dir);
- if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
- fibh->sbh = fibh->ebh = NULL;
- else if (inode_bmap(dir, f_pos >> dir->i_sb->s_blocksize_bits,
- &epos, &eloc, &elen, &offset) ==
- (EXT_RECORDED_ALLOCATED >> 30)) {
- block = udf_get_lb_pblock(dir->i_sb, eloc, offset);
+ if (dinfo->i_alloc_type != ICBTAG_FLAG_AD_IN_ICB) {
+ if (inode_bmap(dir, f_pos >> dir->i_sb->s_blocksize_bits, &epos,
+ &eloc, &elen, &offset) != (EXT_RECORDED_ALLOCATED >> 30)) {
+ block = udf_get_lb_pblock(dir->i_sb,
+ &dinfo->i_location, 0);
+ fibh->soffset = fibh->eoffset = sb->s_blocksize;
+ goto add;
+ }
+ block = udf_get_lb_pblock(dir->i_sb, &eloc, offset);
if ((++offset << dir->i_sb->s_blocksize_bits) < elen) {
if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
- epos.offset -= sizeof(short_ad);
+ epos.offset -= sizeof(struct short_ad);
else if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
- epos.offset -= sizeof(long_ad);
+ epos.offset -= sizeof(struct long_ad);
} else
offset = 0;
fibh->sbh = fibh->ebh = udf_tread(dir->i_sb, block);
if (!fibh->sbh) {
- brelse(epos.bh);
*err = -EIO;
- return NULL;
+ goto out_err;
}
block = dinfo->i_location.logicalBlockNum;
- } else {
- block = udf_get_lb_pblock(dir->i_sb, dinfo->i_location, 0);
- fibh->sbh = fibh->ebh = NULL;
- fibh->soffset = fibh->eoffset = sb->s_blocksize;
- goto add;
}
while (f_pos < size) {
@@ -407,41 +373,16 @@ static struct fileIdentDesc *udf_add_entry(struct inode *dir,
&elen, &offset);
if (!fi) {
- if (fibh->sbh != fibh->ebh)
- brelse(fibh->ebh);
- brelse(fibh->sbh);
- brelse(epos.bh);
*err = -EIO;
- return NULL;
+ goto out_err;
}
liu = le16_to_cpu(cfi->lengthOfImpUse);
lfi = cfi->lengthFileIdent;
- if (fibh->sbh == fibh->ebh)
- nameptr = fi->fileIdent + liu;
- else {
- int poffset; /* Unpaded ending offset */
-
- poffset = fibh->soffset + sizeof(struct fileIdentDesc) +
- liu + lfi;
-
- if (poffset >= lfi)
- nameptr = (char *)(fibh->ebh->b_data +
- poffset - lfi);
- else {
- nameptr = fname;
- memcpy(nameptr, fi->fileIdent + liu,
- lfi - poffset);
- memcpy(nameptr + lfi - poffset,
- fibh->ebh->b_data, poffset);
- }
- }
-
if ((cfi->fileCharacteristics & FID_FILE_CHAR_DELETED) != 0) {
if (((sizeof(struct fileIdentDesc) +
liu + lfi + 3) & ~3) == nfidlen) {
- brelse(epos.bh);
cfi->descTag.tagSerialNum = cpu_to_le16(1);
cfi->fileVersionNum = cpu_to_le16(1);
cfi->fileCharacteristics = 0;
@@ -449,38 +390,16 @@ static struct fileIdentDesc *udf_add_entry(struct inode *dir,
cfi->lengthOfImpUse = cpu_to_le16(0);
if (!udf_write_fi(dir, cfi, fi, fibh, NULL,
name))
- return fi;
+ goto out_ok;
else {
*err = -EIO;
- return NULL;
+ goto out_err;
}
}
}
-
- if (!lfi || !dentry)
- continue;
-
- flen = udf_get_filename(dir->i_sb, nameptr, fname, lfi);
- if (flen && udf_match(flen, fname, dentry->d_name.len,
- dentry->d_name.name)) {
- if (fibh->sbh != fibh->ebh)
- brelse(fibh->ebh);
- brelse(fibh->sbh);
- brelse(epos.bh);
- *err = -EEXIST;
- return NULL;
- }
}
add:
- if (dinfo->i_alloc_type != ICBTAG_FLAG_AD_IN_ICB) {
- elen = (elen + sb->s_blocksize - 1) & ~(sb->s_blocksize - 1);
- if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
- epos.offset -= sizeof(short_ad);
- else if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
- epos.offset -= sizeof(long_ad);
- udf_write_aext(dir, &epos, eloc, elen, 1);
- }
f_pos += nfidlen;
if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB &&
@@ -496,13 +415,14 @@ add:
fibh->sbh = fibh->ebh =
udf_expand_dir_adinicb(dir, &block, err);
if (!fibh->sbh)
- return NULL;
+ goto out_err;
epos.block = dinfo->i_location;
epos.offset = udf_file_entry_alloc_offset(dir);
/* Load extent udf_expand_dir_adinicb() has created */
udf_current_aext(dir, &epos, &eloc, &elen, 1);
}
+ /* Entry fits into current block? */
if (sb->s_blocksize - fibh->eoffset >= nfidlen) {
fibh->soffset = fibh->eoffset;
fibh->eoffset += nfidlen;
@@ -526,6 +446,16 @@ add:
(fibh->sbh->b_data + fibh->soffset);
}
} else {
+ /* Round up last extent in the file */
+ elen = (elen + sb->s_blocksize - 1) & ~(sb->s_blocksize - 1);
+ if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
+ epos.offset -= sizeof(struct short_ad);
+ else if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
+ epos.offset -= sizeof(struct long_ad);
+ udf_write_aext(dir, &epos, &eloc, elen, 1);
+ dinfo->i_lenExtents = (dinfo->i_lenExtents + sb->s_blocksize
+ - 1) & ~(sb->s_blocksize - 1);
+
fibh->soffset = fibh->eoffset - sb->s_blocksize;
fibh->eoffset += nfidlen - sb->s_blocksize;
if (fibh->sbh != fibh->ebh) {
@@ -537,20 +467,21 @@ add:
dir->i_sb->s_blocksize_bits);
fibh->ebh = udf_bread(dir,
f_pos >> dir->i_sb->s_blocksize_bits, 1, err);
- if (!fibh->ebh) {
- brelse(epos.bh);
- brelse(fibh->sbh);
- return NULL;
- }
+ if (!fibh->ebh)
+ goto out_err;
+ /* Extents could have been merged, invalidate our position */
+ brelse(epos.bh);
+ epos.bh = NULL;
+ epos.block = dinfo->i_location;
+ epos.offset = udf_file_entry_alloc_offset(dir);
if (!fibh->soffset) {
- if (udf_next_aext(dir, &epos, &eloc, &elen, 1) ==
- (EXT_RECORDED_ALLOCATED >> 30)) {
- block = eloc.logicalBlockNum + ((elen - 1) >>
+ /* Find the freshly allocated block */
+ while (udf_next_aext(dir, &epos, &eloc, &elen, 1) ==
+ (EXT_RECORDED_ALLOCATED >> 30))
+ ;
+ block = eloc.logicalBlockNum + ((elen - 1) >>
dir->i_sb->s_blocksize_bits);
- } else
- block++;
-
brelse(fibh->sbh);
fibh->sbh = fibh->ebh;
fi = (struct fileIdentDesc *)(fibh->sbh->b_data);
@@ -564,28 +495,47 @@ add:
memset(cfi, 0, sizeof(struct fileIdentDesc));
if (UDF_SB(sb)->s_udfrev >= 0x0200)
udf_new_tag((char *)cfi, TAG_IDENT_FID, 3, 1, block,
- sizeof(tag));
+ sizeof(struct tag));
else
udf_new_tag((char *)cfi, TAG_IDENT_FID, 2, 1, block,
- sizeof(tag));
+ sizeof(struct tag));
cfi->fileVersionNum = cpu_to_le16(1);
cfi->lengthFileIdent = namelen;
cfi->lengthOfImpUse = cpu_to_le16(0);
if (!udf_write_fi(dir, cfi, fi, fibh, NULL, name)) {
- brelse(epos.bh);
dir->i_size += nfidlen;
if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
dinfo->i_lenAlloc += nfidlen;
+ else {
+ /* Find the last extent and truncate it to proper size */
+ while (udf_next_aext(dir, &epos, &eloc, &elen, 1) ==
+ (EXT_RECORDED_ALLOCATED >> 30))
+ ;
+ elen -= dinfo->i_lenExtents - dir->i_size;
+ if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
+ epos.offset -= sizeof(struct short_ad);
+ else if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
+ epos.offset -= sizeof(struct long_ad);
+ udf_write_aext(dir, &epos, &eloc, elen, 1);
+ dinfo->i_lenExtents = dir->i_size;
+ }
+
mark_inode_dirty(dir);
- return fi;
+ goto out_ok;
} else {
- brelse(epos.bh);
- if (fibh->sbh != fibh->ebh)
- brelse(fibh->ebh);
- brelse(fibh->sbh);
*err = -EIO;
- return NULL;
+ goto out_err;
}
+
+out_err:
+ fi = NULL;
+ if (fibh->sbh != fibh->ebh)
+ brelse(fibh->ebh);
+ brelse(fibh->sbh);
+out_ok:
+ brelse(epos.bh);
+ kfree(name);
+ return fi;
}
static int udf_delete_entry(struct inode *inode, struct fileIdentDesc *fi,
@@ -595,13 +545,13 @@ static int udf_delete_entry(struct inode *inode, struct fileIdentDesc *fi,
cfi->fileCharacteristics |= FID_FILE_CHAR_DELETED;
if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_STRICT))
- memset(&(cfi->icb), 0x00, sizeof(long_ad));
+ memset(&(cfi->icb), 0x00, sizeof(struct long_ad));
return udf_write_fi(inode, cfi, fi, fibh, NULL, NULL);
}
-static int udf_create(struct inode *dir, struct dentry *dentry, int mode,
- struct nameidata *nd)
+static int udf_create(struct inode *dir, struct dentry *dentry, umode_t mode,
+ bool excl)
{
struct udf_fileident_bh fibh;
struct inode *inode;
@@ -609,10 +559,8 @@ static int udf_create(struct inode *dir, struct dentry *dentry, int mode,
int err;
struct udf_inode_info *iinfo;
- lock_kernel();
inode = udf_new_inode(dir, mode, &err);
if (!inode) {
- unlock_kernel();
return err;
}
@@ -623,15 +571,12 @@ static int udf_create(struct inode *dir, struct dentry *dentry, int mode,
inode->i_data.a_ops = &udf_aops;
inode->i_op = &udf_file_inode_operations;
inode->i_fop = &udf_file_operations;
- inode->i_mode = mode;
mark_inode_dirty(inode);
fi = udf_add_entry(dir, dentry, &fibh, &cfi, &err);
if (!fi) {
- inode->i_nlink--;
- mark_inode_dirty(inode);
+ inode_dec_link_count(inode);
iput(inode);
- unlock_kernel();
return err;
}
cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize);
@@ -644,13 +589,35 @@ static int udf_create(struct inode *dir, struct dentry *dentry, int mode,
if (fibh.sbh != fibh.ebh)
brelse(fibh.ebh);
brelse(fibh.sbh);
- unlock_kernel();
d_instantiate(dentry, inode);
return 0;
}
-static int udf_mknod(struct inode *dir, struct dentry *dentry, int mode,
+static int udf_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode)
+{
+ struct inode *inode;
+ struct udf_inode_info *iinfo;
+ int err;
+
+ inode = udf_new_inode(dir, mode, &err);
+ if (!inode)
+ return err;
+
+ iinfo = UDF_I(inode);
+ if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
+ inode->i_data.a_ops = &udf_adinicb_aops;
+ else
+ inode->i_data.a_ops = &udf_aops;
+ inode->i_op = &udf_file_inode_operations;
+ inode->i_fop = &udf_file_operations;
+ mark_inode_dirty(inode);
+
+ d_tmpfile(dentry, inode);
+ return 0;
+}
+
+static int udf_mknod(struct inode *dir, struct dentry *dentry, umode_t mode,
dev_t rdev)
{
struct inode *inode;
@@ -662,21 +629,17 @@ static int udf_mknod(struct inode *dir, struct dentry *dentry, int mode,
if (!old_valid_dev(rdev))
return -EINVAL;
- lock_kernel();
err = -EIO;
inode = udf_new_inode(dir, mode, &err);
if (!inode)
goto out;
iinfo = UDF_I(inode);
- inode->i_uid = current->fsuid;
init_special_inode(inode, mode, rdev);
fi = udf_add_entry(dir, dentry, &fibh, &cfi, &err);
if (!fi) {
- inode->i_nlink--;
- mark_inode_dirty(inode);
+ inode_dec_link_count(inode);
iput(inode);
- unlock_kernel();
return err;
}
cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize);
@@ -695,11 +658,10 @@ static int udf_mknod(struct inode *dir, struct dentry *dentry, int mode,
err = 0;
out:
- unlock_kernel();
return err;
}
-static int udf_mkdir(struct inode *dir, struct dentry *dentry, int mode)
+static int udf_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
{
struct inode *inode;
struct udf_fileident_bh fibh;
@@ -708,13 +670,8 @@ static int udf_mkdir(struct inode *dir, struct dentry *dentry, int mode)
struct udf_inode_info *dinfo = UDF_I(dir);
struct udf_inode_info *iinfo;
- lock_kernel();
- err = -EMLINK;
- if (dir->i_nlink >= (256 << sizeof(dir->i_nlink)) - 1)
- goto out;
-
err = -EIO;
- inode = udf_new_inode(dir, S_IFDIR, &err);
+ inode = udf_new_inode(dir, S_IFDIR | mode, &err);
if (!inode)
goto out;
@@ -723,12 +680,11 @@ static int udf_mkdir(struct inode *dir, struct dentry *dentry, int mode)
inode->i_fop = &udf_dir_operations;
fi = udf_add_entry(inode, NULL, &fibh, &cfi, &err);
if (!fi) {
- inode->i_nlink--;
- mark_inode_dirty(inode);
+ inode_dec_link_count(inode);
iput(inode);
goto out;
}
- inode->i_nlink = 2;
+ set_nlink(inode, 2);
cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize);
cfi.icb.extLocation = cpu_to_lelb(dinfo->i_location);
*(__le32 *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse =
@@ -737,14 +693,11 @@ static int udf_mkdir(struct inode *dir, struct dentry *dentry, int mode)
FID_FILE_CHAR_DIRECTORY | FID_FILE_CHAR_PARENT;
udf_write_fi(inode, &cfi, fi, &fibh, NULL, NULL);
brelse(fibh.sbh);
- inode->i_mode = S_IFDIR | mode;
- if (dir->i_mode & S_ISGID)
- inode->i_mode |= S_ISGID;
mark_inode_dirty(inode);
fi = udf_add_entry(dir, dentry, &fibh, &cfi, &err);
if (!fi) {
- inode->i_nlink = 0;
+ clear_nlink(inode);
mark_inode_dirty(inode);
iput(inode);
goto out;
@@ -764,7 +717,6 @@ static int udf_mkdir(struct inode *dir, struct dentry *dentry, int mode)
err = 0;
out:
- unlock_kernel();
return err;
}
@@ -775,7 +727,7 @@ static int empty_dir(struct inode *dir)
loff_t f_pos;
loff_t size = udf_ext0_offset(dir) + dir->i_size;
int block;
- kernel_lb_addr eloc;
+ struct kernel_lb_addr eloc;
uint32_t elen;
sector_t offset;
struct extent_position epos = {};
@@ -789,12 +741,12 @@ static int empty_dir(struct inode *dir)
else if (inode_bmap(dir, f_pos >> dir->i_sb->s_blocksize_bits,
&epos, &eloc, &elen, &offset) ==
(EXT_RECORDED_ALLOCATED >> 30)) {
- block = udf_get_lb_pblock(dir->i_sb, eloc, offset);
+ block = udf_get_lb_pblock(dir->i_sb, &eloc, offset);
if ((++offset << dir->i_sb->s_blocksize_bits) < elen) {
if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
- epos.offset -= sizeof(short_ad);
+ epos.offset -= sizeof(struct short_ad);
else if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
- epos.offset -= sizeof(long_ad);
+ epos.offset -= sizeof(struct long_ad);
} else
offset = 0;
@@ -843,17 +795,16 @@ static int udf_rmdir(struct inode *dir, struct dentry *dentry)
struct inode *inode = dentry->d_inode;
struct udf_fileident_bh fibh;
struct fileIdentDesc *fi, cfi;
- kernel_lb_addr tloc;
+ struct kernel_lb_addr tloc;
retval = -ENOENT;
- lock_kernel();
- fi = udf_find_entry(dir, dentry, &fibh, &cfi);
+ fi = udf_find_entry(dir, &dentry->d_name, &fibh, &cfi);
if (!fi)
goto out;
retval = -EIO;
tloc = lelb_to_cpu(cfi.icb.extLocation);
- if (udf_get_lb_pblock(dir->i_sb, tloc, 0) != inode->i_ino)
+ if (udf_get_lb_pblock(dir->i_sb, &tloc, 0) != inode->i_ino)
goto end_rmdir;
retval = -ENOTEMPTY;
if (!empty_dir(inode))
@@ -862,9 +813,8 @@ static int udf_rmdir(struct inode *dir, struct dentry *dentry)
if (retval)
goto end_rmdir;
if (inode->i_nlink != 2)
- udf_warning(inode->i_sb, "udf_rmdir",
- "empty directory has nlink != 2 (%d)",
- inode->i_nlink);
+ udf_warn(inode->i_sb, "empty directory has nlink != 2 (%d)\n",
+ inode->i_nlink);
clear_nlink(inode);
inode->i_size = 0;
inode_dec_link_count(dir);
@@ -878,7 +828,6 @@ end_rmdir:
brelse(fibh.sbh);
out:
- unlock_kernel();
return retval;
}
@@ -889,23 +838,22 @@ static int udf_unlink(struct inode *dir, struct dentry *dentry)
struct udf_fileident_bh fibh;
struct fileIdentDesc *fi;
struct fileIdentDesc cfi;
- kernel_lb_addr tloc;
+ struct kernel_lb_addr tloc;
retval = -ENOENT;
- lock_kernel();
- fi = udf_find_entry(dir, dentry, &fibh, &cfi);
+ fi = udf_find_entry(dir, &dentry->d_name, &fibh, &cfi);
if (!fi)
goto out;
retval = -EIO;
tloc = lelb_to_cpu(cfi.icb.extLocation);
- if (udf_get_lb_pblock(dir->i_sb, tloc, 0) != inode->i_ino)
+ if (udf_get_lb_pblock(dir->i_sb, &tloc, 0) != inode->i_ino)
goto end_unlink;
if (!inode->i_nlink) {
udf_debug("Deleting nonexistent file (%lu), %d\n",
inode->i_ino, inode->i_nlink);
- inode->i_nlink = 1;
+ set_nlink(inode, 1);
}
retval = udf_delete_entry(dir, fi, &fibh, &cfi);
if (retval)
@@ -922,7 +870,6 @@ end_unlink:
brelse(fibh.sbh);
out:
- unlock_kernel();
return retval;
}
@@ -931,35 +878,40 @@ static int udf_symlink(struct inode *dir, struct dentry *dentry,
{
struct inode *inode;
struct pathComponent *pc;
- char *compstart;
+ const char *compstart;
struct udf_fileident_bh fibh;
struct extent_position epos = {};
int eoffset, elen = 0;
struct fileIdentDesc *fi;
struct fileIdentDesc cfi;
- char *ea;
+ uint8_t *ea;
int err;
int block;
- char name[UDF_NAME_LEN];
+ unsigned char *name = NULL;
int namelen;
- struct buffer_head *bh;
struct udf_inode_info *iinfo;
+ struct super_block *sb = dir->i_sb;
- lock_kernel();
- inode = udf_new_inode(dir, S_IFLNK, &err);
+ inode = udf_new_inode(dir, S_IFLNK | S_IRWXUGO, &err);
if (!inode)
goto out;
iinfo = UDF_I(inode);
- inode->i_mode = S_IFLNK | S_IRWXUGO;
+ down_write(&iinfo->i_data_sem);
+ name = kmalloc(UDF_NAME_LEN, GFP_NOFS);
+ if (!name) {
+ err = -ENOMEM;
+ goto out_no_entry;
+ }
+
inode->i_data.a_ops = &udf_symlink_aops;
- inode->i_op = &page_symlink_inode_operations;
+ inode->i_op = &udf_symlink_inode_operations;
if (iinfo->i_alloc_type != ICBTAG_FLAG_AD_IN_ICB) {
- kernel_lb_addr eloc;
- uint32_t elen;
+ struct kernel_lb_addr eloc;
+ uint32_t bsize;
- block = udf_new_block(inode->i_sb, inode,
+ block = udf_new_block(sb, inode,
iinfo->i_location.partitionReferenceNum,
iinfo->i_location.logicalBlockNum, &err);
if (!block)
@@ -970,17 +922,17 @@ static int udf_symlink(struct inode *dir, struct dentry *dentry,
eloc.logicalBlockNum = block;
eloc.partitionReferenceNum =
iinfo->i_location.partitionReferenceNum;
- elen = inode->i_sb->s_blocksize;
- iinfo->i_lenExtents = elen;
- udf_add_aext(inode, &epos, eloc, elen, 0);
+ bsize = sb->s_blocksize;
+ iinfo->i_lenExtents = bsize;
+ udf_add_aext(inode, &epos, &eloc, bsize, 0);
brelse(epos.bh);
- block = udf_get_pblock(inode->i_sb, block,
+ block = udf_get_pblock(sb, block,
iinfo->i_location.partitionReferenceNum,
0);
- epos.bh = udf_tread(inode->i_sb, block);
+ epos.bh = udf_tgetblk(sb, block);
lock_buffer(epos.bh);
- memset(epos.bh->b_data, 0x00, inode->i_sb->s_blocksize);
+ memset(epos.bh->b_data, 0x00, bsize);
set_buffer_uptodate(epos.bh);
unlock_buffer(epos.bh);
mark_buffer_dirty_inode(epos.bh, inode);
@@ -988,7 +940,7 @@ static int udf_symlink(struct inode *dir, struct dentry *dentry,
} else
ea = iinfo->i_ext.i_data + iinfo->i_lenEAttr;
- eoffset = inode->i_sb->s_blocksize - udf_ext0_offset(inode);
+ eoffset = sb->s_blocksize - udf_ext0_offset(inode);
pc = (struct pathComponent *)ea;
if (*symname == '/') {
@@ -999,7 +951,6 @@ static int udf_symlink(struct inode *dir, struct dentry *dentry,
pc->componentType = 1;
pc->lengthComponentIdent = 0;
pc->componentFileVersionNum = 0;
- pc += sizeof(struct pathComponent);
elen += sizeof(struct pathComponent);
}
@@ -1011,7 +962,7 @@ static int udf_symlink(struct inode *dir, struct dentry *dentry,
pc = (struct pathComponent *)(ea + elen);
- compstart = (char *)symname;
+ compstart = symname;
do {
symname++;
@@ -1029,7 +980,7 @@ static int udf_symlink(struct inode *dir, struct dentry *dentry,
}
if (pc->componentType == 5) {
- namelen = udf_put_filename(inode->i_sb, compstart, name,
+ namelen = udf_put_filename(sb, compstart, name,
symname - compstart);
if (!namelen)
goto out_no_entry;
@@ -1056,28 +1007,19 @@ static int udf_symlink(struct inode *dir, struct dentry *dentry,
inode->i_size = elen;
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
iinfo->i_lenAlloc = inode->i_size;
+ else
+ udf_truncate_tail_extent(inode);
mark_inode_dirty(inode);
+ up_write(&iinfo->i_data_sem);
fi = udf_add_entry(dir, dentry, &fibh, &cfi, &err);
if (!fi)
goto out_no_entry;
- cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize);
+ cfi.icb.extLength = cpu_to_le32(sb->s_blocksize);
cfi.icb.extLocation = cpu_to_lelb(iinfo->i_location);
- bh = UDF_SB(inode->i_sb)->s_lvid_bh;
- if (bh) {
- struct logicalVolIntegrityDesc *lvid =
- (struct logicalVolIntegrityDesc *)bh->b_data;
- struct logicalVolHeaderDesc *lvhd;
- uint64_t uniqueID;
- lvhd = (struct logicalVolHeaderDesc *)
- lvid->logicalVolContentsUse;
- uniqueID = le64_to_cpu(lvhd->uniqueID);
+ if (UDF_SB(inode->i_sb)->s_lvid_bh) {
*(__le32 *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse =
- cpu_to_le32(uniqueID & 0x00000000FFFFFFFFUL);
- if (!(++uniqueID & 0x00000000FFFFFFFFUL))
- uniqueID += 16;
- lvhd->uniqueID = cpu_to_le64(uniqueID);
- mark_buffer_dirty(bh);
+ cpu_to_le32(lvid_get_unique_id(sb));
}
udf_write_fi(dir, &cfi, fi, &fibh, NULL, NULL);
if (UDF_I(dir)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
@@ -1089,10 +1031,11 @@ static int udf_symlink(struct inode *dir, struct dentry *dentry,
err = 0;
out:
- unlock_kernel();
+ kfree(name);
return err;
out_no_entry:
+ up_write(&iinfo->i_data_sem);
inode_dec_link_count(inode);
iput(inode);
goto out;
@@ -1105,36 +1048,16 @@ static int udf_link(struct dentry *old_dentry, struct inode *dir,
struct udf_fileident_bh fibh;
struct fileIdentDesc cfi, *fi;
int err;
- struct buffer_head *bh;
-
- lock_kernel();
- if (inode->i_nlink >= (256 << sizeof(inode->i_nlink)) - 1) {
- unlock_kernel();
- return -EMLINK;
- }
fi = udf_add_entry(dir, dentry, &fibh, &cfi, &err);
if (!fi) {
- unlock_kernel();
return err;
}
cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize);
cfi.icb.extLocation = cpu_to_lelb(UDF_I(inode)->i_location);
- bh = UDF_SB(inode->i_sb)->s_lvid_bh;
- if (bh) {
- struct logicalVolIntegrityDesc *lvid =
- (struct logicalVolIntegrityDesc *)bh->b_data;
- struct logicalVolHeaderDesc *lvhd;
- uint64_t uniqueID;
- lvhd = (struct logicalVolHeaderDesc *)
- (lvid->logicalVolContentsUse);
- uniqueID = le64_to_cpu(lvhd->uniqueID);
+ if (UDF_SB(inode->i_sb)->s_lvid_bh) {
*(__le32 *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse =
- cpu_to_le32(uniqueID & 0x00000000FFFFFFFFUL);
- if (!(++uniqueID & 0x00000000FFFFFFFFUL))
- uniqueID += 16;
- lvhd->uniqueID = cpu_to_le64(uniqueID);
- mark_buffer_dirty(bh);
+ cpu_to_le32(lvid_get_unique_id(inode->i_sb));
}
udf_write_fi(dir, &cfi, fi, &fibh, NULL, NULL);
if (UDF_I(dir)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
@@ -1146,9 +1069,8 @@ static int udf_link(struct dentry *old_dentry, struct inode *dir,
inc_nlink(inode);
inode->i_ctime = current_fs_time(inode->i_sb);
mark_inode_dirty(inode);
- atomic_inc(&inode->i_count);
+ ihold(inode);
d_instantiate(dentry, inode);
- unlock_kernel();
return 0;
}
@@ -1166,22 +1088,21 @@ static int udf_rename(struct inode *old_dir, struct dentry *old_dentry,
struct fileIdentDesc ocfi, ncfi;
struct buffer_head *dir_bh = NULL;
int retval = -ENOENT;
- kernel_lb_addr tloc;
+ struct kernel_lb_addr tloc;
struct udf_inode_info *old_iinfo = UDF_I(old_inode);
- lock_kernel();
- ofi = udf_find_entry(old_dir, old_dentry, &ofibh, &ocfi);
+ ofi = udf_find_entry(old_dir, &old_dentry->d_name, &ofibh, &ocfi);
if (ofi) {
if (ofibh.sbh != ofibh.ebh)
brelse(ofibh.ebh);
brelse(ofibh.sbh);
}
tloc = lelb_to_cpu(ocfi.icb.extLocation);
- if (!ofi || udf_get_lb_pblock(old_dir->i_sb, tloc, 0)
+ if (!ofi || udf_get_lb_pblock(old_dir->i_sb, &tloc, 0)
!= old_inode->i_ino)
goto end_rename;
- nfi = udf_find_entry(new_dir, new_dentry, &nfibh, &ncfi);
+ nfi = udf_find_entry(new_dir, &new_dentry->d_name, &nfibh, &ncfi);
if (nfi) {
if (!new_inode) {
if (nfibh.sbh != nfibh.ebh)
@@ -1216,15 +1137,9 @@ static int udf_rename(struct inode *old_dir, struct dentry *old_dentry,
if (!dir_fi)
goto end_rename;
tloc = lelb_to_cpu(dir_fi->icb.extLocation);
- if (udf_get_lb_pblock(old_inode->i_sb, tloc, 0) !=
+ if (udf_get_lb_pblock(old_inode->i_sb, &tloc, 0) !=
old_dir->i_ino)
goto end_rename;
-
- retval = -EMLINK;
- if (!new_inode &&
- new_dir->i_nlink >=
- (256 << sizeof(new_dir->i_nlink)) - 1)
- goto end_rename;
}
if (!nfi) {
nfi = udf_add_entry(new_dir, new_dentry, &nfibh, &ncfi,
@@ -1245,11 +1160,11 @@ static int udf_rename(struct inode *old_dir, struct dentry *old_dentry,
*/
ncfi.fileVersionNum = ocfi.fileVersionNum;
ncfi.fileCharacteristics = ocfi.fileCharacteristics;
- memcpy(&(ncfi.icb), &(ocfi.icb), sizeof(long_ad));
+ memcpy(&(ncfi.icb), &(ocfi.icb), sizeof(struct long_ad));
udf_write_fi(new_dir, &ncfi, nfi, &nfibh, NULL, NULL);
/* The old fid may have moved - find it again */
- ofi = udf_find_entry(old_dir, old_dentry, &ofibh, &ocfi);
+ ofi = udf_find_entry(old_dir, &old_dentry->d_name, &ofibh, &ocfi);
udf_delete_entry(old_dir, ofi, &ofibh, &ocfi);
if (new_inode) {
@@ -1293,11 +1208,122 @@ end_rename:
brelse(nfibh.ebh);
brelse(nfibh.sbh);
}
- unlock_kernel();
return retval;
}
+static struct dentry *udf_get_parent(struct dentry *child)
+{
+ struct kernel_lb_addr tloc;
+ struct inode *inode = NULL;
+ struct qstr dotdot = QSTR_INIT("..", 2);
+ struct fileIdentDesc cfi;
+ struct udf_fileident_bh fibh;
+
+ if (!udf_find_entry(child->d_inode, &dotdot, &fibh, &cfi))
+ goto out_unlock;
+
+ if (fibh.sbh != fibh.ebh)
+ brelse(fibh.ebh);
+ brelse(fibh.sbh);
+
+ tloc = lelb_to_cpu(cfi.icb.extLocation);
+ inode = udf_iget(child->d_inode->i_sb, &tloc);
+ if (!inode)
+ goto out_unlock;
+
+ return d_obtain_alias(inode);
+out_unlock:
+ return ERR_PTR(-EACCES);
+}
+
+
+static struct dentry *udf_nfs_get_inode(struct super_block *sb, u32 block,
+ u16 partref, __u32 generation)
+{
+ struct inode *inode;
+ struct kernel_lb_addr loc;
+
+ if (block == 0)
+ return ERR_PTR(-ESTALE);
+
+ loc.logicalBlockNum = block;
+ loc.partitionReferenceNum = partref;
+ inode = udf_iget(sb, &loc);
+
+ if (inode == NULL)
+ return ERR_PTR(-ENOMEM);
+
+ if (generation && inode->i_generation != generation) {
+ iput(inode);
+ return ERR_PTR(-ESTALE);
+ }
+ return d_obtain_alias(inode);
+}
+
+static struct dentry *udf_fh_to_dentry(struct super_block *sb,
+ struct fid *fid, int fh_len, int fh_type)
+{
+ if ((fh_len != 3 && fh_len != 5) ||
+ (fh_type != FILEID_UDF_WITH_PARENT &&
+ fh_type != FILEID_UDF_WITHOUT_PARENT))
+ return NULL;
+
+ return udf_nfs_get_inode(sb, fid->udf.block, fid->udf.partref,
+ fid->udf.generation);
+}
+
+static struct dentry *udf_fh_to_parent(struct super_block *sb,
+ struct fid *fid, int fh_len, int fh_type)
+{
+ if (fh_len != 5 || fh_type != FILEID_UDF_WITH_PARENT)
+ return NULL;
+
+ return udf_nfs_get_inode(sb, fid->udf.parent_block,
+ fid->udf.parent_partref,
+ fid->udf.parent_generation);
+}
+static int udf_encode_fh(struct inode *inode, __u32 *fh, int *lenp,
+ struct inode *parent)
+{
+ int len = *lenp;
+ struct kernel_lb_addr location = UDF_I(inode)->i_location;
+ struct fid *fid = (struct fid *)fh;
+ int type = FILEID_UDF_WITHOUT_PARENT;
+
+ if (parent && (len < 5)) {
+ *lenp = 5;
+ return FILEID_INVALID;
+ } else if (len < 3) {
+ *lenp = 3;
+ return FILEID_INVALID;
+ }
+
+ *lenp = 3;
+ fid->udf.block = location.logicalBlockNum;
+ fid->udf.partref = location.partitionReferenceNum;
+ fid->udf.parent_partref = 0;
+ fid->udf.generation = inode->i_generation;
+
+ if (parent) {
+ location = UDF_I(parent)->i_location;
+ fid->udf.parent_block = location.logicalBlockNum;
+ fid->udf.parent_partref = location.partitionReferenceNum;
+ fid->udf.parent_generation = inode->i_generation;
+ *lenp = 5;
+ type = FILEID_UDF_WITH_PARENT;
+ }
+
+ return type;
+}
+
+const struct export_operations udf_export_ops = {
+ .encode_fh = udf_encode_fh,
+ .fh_to_dentry = udf_fh_to_dentry,
+ .fh_to_parent = udf_fh_to_parent,
+ .get_parent = udf_get_parent,
+};
+
const struct inode_operations udf_dir_inode_operations = {
.lookup = udf_lookup,
.create = udf_create,
@@ -1308,4 +1334,10 @@ const struct inode_operations udf_dir_inode_operations = {
.rmdir = udf_rmdir,
.mknod = udf_mknod,
.rename = udf_rename,
+ .tmpfile = udf_tmpfile,
+};
+const struct inode_operations udf_symlink_inode_operations = {
+ .readlink = generic_readlink,
+ .follow_link = page_follow_link_light,
+ .put_link = page_put_link,
};
diff --git a/fs/udf/osta_udf.h b/fs/udf/osta_udf.h
index 65ff47902bd..fbff74654df 100644
--- a/fs/udf/osta_udf.h
+++ b/fs/udf/osta_udf.h
@@ -85,7 +85,7 @@ struct appIdentSuffix {
/* Logical Volume Integrity Descriptor (UDF 2.50 2.2.6) */
/* Implementation Use (UDF 2.50 2.2.6.4) */
struct logicalVolIntegrityDescImpUse {
- regid impIdent;
+ struct regid impIdent;
__le32 numFiles;
__le32 numDirs;
__le16 minUDFReadRev;
@@ -97,12 +97,12 @@ struct logicalVolIntegrityDescImpUse {
/* Implementation Use Volume Descriptor (UDF 2.50 2.2.7) */
/* Implementation Use (UDF 2.50 2.2.7.2) */
struct impUseVolDescImpUse {
- charspec LVICharset;
+ struct charspec LVICharset;
dstring logicalVolIdent[128];
dstring LVInfo1[36];
dstring LVInfo2[36];
dstring LVInfo3[36];
- regid impIdent;
+ struct regid impIdent;
uint8_t impUse[128];
} __attribute__ ((packed));
@@ -110,7 +110,7 @@ struct udfPartitionMap2 {
uint8_t partitionMapType;
uint8_t partitionMapLength;
uint8_t reserved1[2];
- regid partIdent;
+ struct regid partIdent;
__le16 volSeqNum;
__le16 partitionNum;
} __attribute__ ((packed));
@@ -120,7 +120,7 @@ struct virtualPartitionMap {
uint8_t partitionMapType;
uint8_t partitionMapLength;
uint8_t reserved1[2];
- regid partIdent;
+ struct regid partIdent;
__le16 volSeqNum;
__le16 partitionNum;
uint8_t reserved2[24];
@@ -131,7 +131,7 @@ struct sparablePartitionMap {
uint8_t partitionMapType;
uint8_t partitionMapLength;
uint8_t reserved1[2];
- regid partIdent;
+ struct regid partIdent;
__le16 volSeqNum;
__le16 partitionNum;
__le16 packetLength;
@@ -146,7 +146,7 @@ struct metadataPartitionMap {
uint8_t partitionMapType;
uint8_t partitionMapLength;
uint8_t reserved1[2];
- regid partIdent;
+ struct regid partIdent;
__le16 volSeqNum;
__le16 partitionNum;
__le32 metadataFileLoc;
@@ -161,7 +161,7 @@ struct metadataPartitionMap {
/* Virtual Allocation Table (UDF 1.5 2.2.10) */
struct virtualAllocationTable15 {
__le32 VirtualSector[0];
- regid vatIdent;
+ struct regid vatIdent;
__le32 previousVATICBLoc;
} __attribute__ ((packed));
@@ -192,8 +192,8 @@ struct sparingEntry {
} __attribute__ ((packed));
struct sparingTable {
- tag descTag;
- regid sparingIdent;
+ struct tag descTag;
+ struct regid sparingIdent;
__le16 reallocationTableLen;
__le16 reserved;
__le32 sequenceNum;
@@ -206,7 +206,7 @@ struct sparingTable {
#define ICBTAG_FILE_TYPE_MIRROR 0xFB
#define ICBTAG_FILE_TYPE_BITMAP 0xFC
-/* struct long_ad ICB - ADImpUse (UDF 2.50 2.2.4.3) */
+/* struct struct long_ad ICB - ADImpUse (UDF 2.50 2.2.4.3) */
struct allocDescImpUse {
__le16 flags;
uint8_t impUse[4];
diff --git a/fs/udf/partition.c b/fs/udf/partition.c
index fc533345ab8..d6caf01a209 100644
--- a/fs/udf/partition.c
+++ b/fs/udf/partition.c
@@ -24,18 +24,17 @@
#include <linux/fs.h>
#include <linux/string.h>
-#include <linux/udf_fs.h>
-#include <linux/slab.h>
#include <linux/buffer_head.h>
+#include <linux/mutex.h>
-inline uint32_t udf_get_pblock(struct super_block *sb, uint32_t block,
- uint16_t partition, uint32_t offset)
+uint32_t udf_get_pblock(struct super_block *sb, uint32_t block,
+ uint16_t partition, uint32_t offset)
{
struct udf_sb_info *sbi = UDF_SB(sb);
struct udf_part_map *map;
if (partition >= sbi->s_partitions) {
- udf_debug("block=%d, partition=%d, offset=%d: "
- "invalid partition\n", block, partition, offset);
+ udf_debug("block=%d, partition=%d, offset=%d: invalid partition\n",
+ block, partition, offset);
return 0xFFFFFFFF;
}
map = &sbi->s_partmaps[partition];
@@ -55,18 +54,23 @@ uint32_t udf_get_pblock_virt15(struct super_block *sb, uint32_t block,
struct udf_sb_info *sbi = UDF_SB(sb);
struct udf_part_map *map;
struct udf_virtual_data *vdata;
- struct udf_inode_info *iinfo;
+ struct udf_inode_info *iinfo = UDF_I(sbi->s_vat_inode);
map = &sbi->s_partmaps[partition];
vdata = &map->s_type_specific.s_virtual;
- index = (sb->s_blocksize - vdata->s_start_offset) / sizeof(uint32_t);
if (block > vdata->s_num_entries) {
- udf_debug("Trying to access block beyond end of VAT "
- "(%d max %d)\n", block, vdata->s_num_entries);
+ udf_debug("Trying to access block beyond end of VAT (%d max %d)\n",
+ block, vdata->s_num_entries);
return 0xFFFFFFFF;
}
+ if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
+ loc = le32_to_cpu(((__le32 *)(iinfo->i_ext.i_data +
+ vdata->s_start_offset))[block]);
+ goto translate;
+ }
+ index = (sb->s_blocksize - vdata->s_start_offset) / sizeof(uint32_t);
if (block >= index) {
block -= index;
newblock = 1 + (block / (sb->s_blocksize / sizeof(uint32_t)));
@@ -89,7 +93,7 @@ uint32_t udf_get_pblock_virt15(struct super_block *sb, uint32_t block,
brelse(bh);
- iinfo = UDF_I(sbi->s_vat_inode);
+translate:
if (iinfo->i_location.partitionReferenceNum == partition) {
udf_debug("recursive call to udf_get_pblock!\n");
return 0xFFFFFFFF;
@@ -156,7 +160,9 @@ int udf_relocate_blocks(struct super_block *sb, long old_block, long *new_block)
struct udf_sb_info *sbi = UDF_SB(sb);
u16 reallocationTableLen;
struct buffer_head *bh;
+ int ret = 0;
+ mutex_lock(&sbi->s_alloc_mutex);
for (i = 0; i < sbi->s_partitions; i++) {
struct udf_part_map *map = &sbi->s_partmaps[i];
if (old_block > map->s_partition_root &&
@@ -172,8 +178,10 @@ int udf_relocate_blocks(struct super_block *sb, long old_block, long *new_block)
break;
}
- if (!st)
- return 1;
+ if (!st) {
+ ret = 1;
+ goto out;
+ }
reallocationTableLen =
le16_to_cpu(st->reallocationTableLen);
@@ -204,14 +212,16 @@ int udf_relocate_blocks(struct super_block *sb, long old_block, long *new_block)
((old_block -
map->s_partition_root) &
(sdata->s_packet_len - 1));
- return 0;
+ ret = 0;
+ goto out;
} else if (origLoc == packet) {
*new_block = le32_to_cpu(
entry->mappedLocation) +
((old_block -
map->s_partition_root) &
(sdata->s_packet_len - 1));
- return 0;
+ ret = 0;
+ goto out;
} else if (origLoc > packet)
break;
}
@@ -248,18 +258,82 @@ int udf_relocate_blocks(struct super_block *sb, long old_block, long *new_block)
st->mapEntry[k].mappedLocation) +
((old_block - map->s_partition_root) &
(sdata->s_packet_len - 1));
- return 0;
+ ret = 0;
+ goto out;
}
- return 1;
+ ret = 1;
+ goto out;
} /* if old_block */
}
if (i == sbi->s_partitions) {
/* outside of partitions */
/* for now, fail =) */
- return 1;
+ ret = 1;
+ }
+
+out:
+ mutex_unlock(&sbi->s_alloc_mutex);
+ return ret;
+}
+
+static uint32_t udf_try_read_meta(struct inode *inode, uint32_t block,
+ uint16_t partition, uint32_t offset)
+{
+ struct super_block *sb = inode->i_sb;
+ struct udf_part_map *map;
+ struct kernel_lb_addr eloc;
+ uint32_t elen;
+ sector_t ext_offset;
+ struct extent_position epos = {};
+ uint32_t phyblock;
+
+ if (inode_bmap(inode, block, &epos, &eloc, &elen, &ext_offset) !=
+ (EXT_RECORDED_ALLOCATED >> 30))
+ phyblock = 0xFFFFFFFF;
+ else {
+ map = &UDF_SB(sb)->s_partmaps[partition];
+ /* map to sparable/physical partition desc */
+ phyblock = udf_get_pblock(sb, eloc.logicalBlockNum,
+ map->s_partition_num, ext_offset + offset);
+ }
+
+ brelse(epos.bh);
+ return phyblock;
+}
+
+uint32_t udf_get_pblock_meta25(struct super_block *sb, uint32_t block,
+ uint16_t partition, uint32_t offset)
+{
+ struct udf_sb_info *sbi = UDF_SB(sb);
+ struct udf_part_map *map;
+ struct udf_meta_data *mdata;
+ uint32_t retblk;
+ struct inode *inode;
+
+ udf_debug("READING from METADATA\n");
+
+ map = &sbi->s_partmaps[partition];
+ mdata = &map->s_type_specific.s_metadata;
+ inode = mdata->s_metadata_fe ? : mdata->s_mirror_fe;
+
+ /* We shouldn't mount such media... */
+ BUG_ON(!inode);
+ retblk = udf_try_read_meta(inode, block, partition, offset);
+ if (retblk == 0xFFFFFFFF && mdata->s_metadata_fe) {
+ udf_warn(sb, "error reading from METADATA, trying to read from MIRROR\n");
+ if (!(mdata->s_flags & MF_MIRROR_FE_LOADED)) {
+ mdata->s_mirror_fe = udf_find_metadata_inode_efe(sb,
+ mdata->s_mirror_file_loc, map->s_partition_num);
+ mdata->s_flags |= MF_MIRROR_FE_LOADED;
+ }
+
+ inode = mdata->s_mirror_fe;
+ if (!inode)
+ return 0xFFFFFFFF;
+ retblk = udf_try_read_meta(inode, block, partition, offset);
}
- return 0;
+ return retblk;
}
diff --git a/fs/udf/super.c b/fs/udf/super.c
index f3ac4abfc94..3286db047a4 100644
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -48,16 +48,17 @@
#include <linux/stat.h>
#include <linux/cdrom.h>
#include <linux/nls.h>
-#include <linux/smp_lock.h>
#include <linux/buffer_head.h>
#include <linux/vfs.h>
#include <linux/vmalloc.h>
#include <linux/errno.h>
#include <linux/mount.h>
#include <linux/seq_file.h>
+#include <linux/bitmap.h>
+#include <linux/crc-itu-t.h>
+#include <linux/log2.h>
#include <asm/byteorder.h>
-#include <linux/udf_fs.h>
#include "udf_sb.h"
#include "udf_i.h"
@@ -75,57 +76,64 @@
#define UDF_DEFAULT_BLOCKSIZE 2048
-static char error_buf[1024];
+#define VSD_FIRST_SECTOR_OFFSET 32768
+#define VSD_MAX_SECTOR_OFFSET 0x800000
+
+enum { UDF_MAX_LINKS = 0xffff };
/* These are the "meat" - everything else is stuffing */
static int udf_fill_super(struct super_block *, void *, int);
static void udf_put_super(struct super_block *);
-static void udf_write_super(struct super_block *);
+static int udf_sync_fs(struct super_block *, int);
static int udf_remount_fs(struct super_block *, int *, char *);
-static int udf_check_valid(struct super_block *, int, int);
-static int udf_vrs(struct super_block *sb, int silent);
-static int udf_load_partition(struct super_block *, kernel_lb_addr *);
-static int udf_load_logicalvol(struct super_block *, struct buffer_head *,
- kernel_lb_addr *);
-static void udf_load_logicalvolint(struct super_block *, kernel_extent_ad);
-static void udf_find_anchor(struct super_block *);
-static int udf_find_fileset(struct super_block *, kernel_lb_addr *,
- kernel_lb_addr *);
-static void udf_load_pvoldesc(struct super_block *, struct buffer_head *);
+static void udf_load_logicalvolint(struct super_block *, struct kernel_extent_ad);
+static int udf_find_fileset(struct super_block *, struct kernel_lb_addr *,
+ struct kernel_lb_addr *);
static void udf_load_fileset(struct super_block *, struct buffer_head *,
- kernel_lb_addr *);
-static int udf_load_partdesc(struct super_block *, struct buffer_head *);
+ struct kernel_lb_addr *);
static void udf_open_lvid(struct super_block *);
static void udf_close_lvid(struct super_block *);
static unsigned int udf_count_free(struct super_block *);
static int udf_statfs(struct dentry *, struct kstatfs *);
-static int udf_show_options(struct seq_file *, struct vfsmount *);
+static int udf_show_options(struct seq_file *, struct dentry *);
-struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct udf_sb_info *sbi)
+struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct super_block *sb)
{
- struct logicalVolIntegrityDesc *lvid =
- (struct logicalVolIntegrityDesc *)sbi->s_lvid_bh->b_data;
- __u32 number_of_partitions = le32_to_cpu(lvid->numOfPartitions);
- __u32 offset = number_of_partitions * 2 *
- sizeof(uint32_t)/sizeof(uint8_t);
+ struct logicalVolIntegrityDesc *lvid;
+ unsigned int partnum;
+ unsigned int offset;
+
+ if (!UDF_SB(sb)->s_lvid_bh)
+ return NULL;
+ lvid = (struct logicalVolIntegrityDesc *)UDF_SB(sb)->s_lvid_bh->b_data;
+ partnum = le32_to_cpu(lvid->numOfPartitions);
+ if ((sb->s_blocksize - sizeof(struct logicalVolIntegrityDescImpUse) -
+ offsetof(struct logicalVolIntegrityDesc, impUse)) /
+ (2 * sizeof(uint32_t)) < partnum) {
+ udf_err(sb, "Logical volume integrity descriptor corrupted "
+ "(numOfPartitions = %u)!\n", partnum);
+ return NULL;
+ }
+ /* The offset is to skip freeSpaceTable and sizeTable arrays */
+ offset = partnum * 2 * sizeof(uint32_t);
return (struct logicalVolIntegrityDescImpUse *)&(lvid->impUse[offset]);
}
/* UDF filesystem type */
-static int udf_get_sb(struct file_system_type *fs_type,
- int flags, const char *dev_name, void *data,
- struct vfsmount *mnt)
+static struct dentry *udf_mount(struct file_system_type *fs_type,
+ int flags, const char *dev_name, void *data)
{
- return get_sb_bdev(fs_type, flags, dev_name, data, udf_fill_super, mnt);
+ return mount_bdev(fs_type, flags, dev_name, data, udf_fill_super);
}
static struct file_system_type udf_fstype = {
.owner = THIS_MODULE,
.name = "udf",
- .get_sb = udf_get_sb,
+ .mount = udf_mount,
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("udf");
static struct kmem_cache *udf_inode_cachep;
@@ -141,16 +149,25 @@ static struct inode *udf_alloc_inode(struct super_block *sb)
ei->i_next_alloc_block = 0;
ei->i_next_alloc_goal = 0;
ei->i_strat4096 = 0;
+ init_rwsem(&ei->i_data_sem);
+ ei->cached_extent.lstart = -1;
+ spin_lock_init(&ei->i_extent_cache_lock);
return &ei->vfs_inode;
}
-static void udf_destroy_inode(struct inode *inode)
+static void udf_i_callback(struct rcu_head *head)
{
+ struct inode *inode = container_of(head, struct inode, i_rcu);
kmem_cache_free(udf_inode_cachep, UDF_I(inode));
}
-static void init_once(struct kmem_cache *cachep, void *foo)
+static void udf_destroy_inode(struct inode *inode)
+{
+ call_rcu(&inode->i_rcu, udf_i_callback);
+}
+
+static void init_once(void *foo)
{
struct udf_inode_info *ei = (struct udf_inode_info *)foo;
@@ -158,7 +175,7 @@ static void init_once(struct kmem_cache *cachep, void *foo)
inode_init_once(&ei->vfs_inode);
}
-static int init_inodecache(void)
+static int __init init_inodecache(void)
{
udf_inode_cachep = kmem_cache_create("udf_inode_cache",
sizeof(struct udf_inode_info),
@@ -172,6 +189,11 @@ static int init_inodecache(void)
static void destroy_inodecache(void)
{
+ /*
+ * Make sure all delayed rcu free inodes are flushed before we
+ * destroy cache.
+ */
+ rcu_barrier();
kmem_cache_destroy(udf_inode_cachep);
}
@@ -180,10 +202,9 @@ static const struct super_operations udf_sb_ops = {
.alloc_inode = udf_alloc_inode,
.destroy_inode = udf_destroy_inode,
.write_inode = udf_write_inode,
- .delete_inode = udf_delete_inode,
- .clear_inode = udf_clear_inode,
+ .evict_inode = udf_evict_inode,
.put_super = udf_put_super,
- .write_super = udf_write_super,
+ .sync_fs = udf_sync_fs,
.statfs = udf_statfs,
.remount_fs = udf_remount_fs,
.show_options = udf_show_options,
@@ -200,9 +221,11 @@ struct udf_options {
unsigned int fileset;
unsigned int rootdir;
unsigned int flags;
- mode_t umask;
- gid_t gid;
- uid_t uid;
+ umode_t umask;
+ kgid_t gid;
+ kuid_t uid;
+ umode_t fmode;
+ umode_t dmode;
struct nls_table *nls_map;
};
@@ -242,9 +265,8 @@ static int udf_sb_alloc_partition_maps(struct super_block *sb, u32 count)
sbi->s_partmaps = kcalloc(count, sizeof(struct udf_part_map),
GFP_KERNEL);
if (!sbi->s_partmaps) {
- udf_error(sb, __FUNCTION__,
- "Unable to allocate space for %d partition maps",
- count);
+ udf_err(sb, "Unable to allocate space for %d partition maps\n",
+ count);
sbi->s_partitions = 0;
return -ENOMEM;
}
@@ -253,14 +275,72 @@ static int udf_sb_alloc_partition_maps(struct super_block *sb, u32 count)
return 0;
}
-static int udf_show_options(struct seq_file *seq, struct vfsmount *mnt)
+static void udf_sb_free_bitmap(struct udf_bitmap *bitmap)
+{
+ int i;
+ int nr_groups = bitmap->s_nr_groups;
+ int size = sizeof(struct udf_bitmap) + (sizeof(struct buffer_head *) *
+ nr_groups);
+
+ for (i = 0; i < nr_groups; i++)
+ if (bitmap->s_block_bitmap[i])
+ brelse(bitmap->s_block_bitmap[i]);
+
+ if (size <= PAGE_SIZE)
+ kfree(bitmap);
+ else
+ vfree(bitmap);
+}
+
+static void udf_free_partition(struct udf_part_map *map)
+{
+ int i;
+ struct udf_meta_data *mdata;
+
+ if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_TABLE)
+ iput(map->s_uspace.s_table);
+ if (map->s_partition_flags & UDF_PART_FLAG_FREED_TABLE)
+ iput(map->s_fspace.s_table);
+ if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_BITMAP)
+ udf_sb_free_bitmap(map->s_uspace.s_bitmap);
+ if (map->s_partition_flags & UDF_PART_FLAG_FREED_BITMAP)
+ udf_sb_free_bitmap(map->s_fspace.s_bitmap);
+ if (map->s_partition_type == UDF_SPARABLE_MAP15)
+ for (i = 0; i < 4; i++)
+ brelse(map->s_type_specific.s_sparing.s_spar_map[i]);
+ else if (map->s_partition_type == UDF_METADATA_MAP25) {
+ mdata = &map->s_type_specific.s_metadata;
+ iput(mdata->s_metadata_fe);
+ mdata->s_metadata_fe = NULL;
+
+ iput(mdata->s_mirror_fe);
+ mdata->s_mirror_fe = NULL;
+
+ iput(mdata->s_bitmap_fe);
+ mdata->s_bitmap_fe = NULL;
+ }
+}
+
+static void udf_sb_free_partitions(struct super_block *sb)
+{
+ struct udf_sb_info *sbi = UDF_SB(sb);
+ int i;
+ if (sbi->s_partmaps == NULL)
+ return;
+ for (i = 0; i < sbi->s_partitions; i++)
+ udf_free_partition(&sbi->s_partmaps[i]);
+ kfree(sbi->s_partmaps);
+ sbi->s_partmaps = NULL;
+}
+
+static int udf_show_options(struct seq_file *seq, struct dentry *root)
{
- struct super_block *sb = mnt->mnt_sb;
+ struct super_block *sb = root->d_sb;
struct udf_sb_info *sbi = UDF_SB(sb);
if (!UDF_QUERY_FLAG(sb, UDF_FLAG_STRICT))
seq_puts(seq, ",nostrict");
- if (sb->s_blocksize != UDF_DEFAULT_BLOCKSIZE)
+ if (UDF_QUERY_FLAG(sb, UDF_FLAG_BLOCKSIZE_SET))
seq_printf(seq, ",bs=%lu", sb->s_blocksize);
if (UDF_QUERY_FLAG(sb, UDF_FLAG_UNHIDE))
seq_puts(seq, ",unhide");
@@ -279,23 +359,21 @@ static int udf_show_options(struct seq_file *seq, struct vfsmount *mnt)
if (UDF_QUERY_FLAG(sb, UDF_FLAG_GID_IGNORE))
seq_puts(seq, ",gid=ignore");
if (UDF_QUERY_FLAG(sb, UDF_FLAG_UID_SET))
- seq_printf(seq, ",uid=%u", sbi->s_uid);
+ seq_printf(seq, ",uid=%u", from_kuid(&init_user_ns, sbi->s_uid));
if (UDF_QUERY_FLAG(sb, UDF_FLAG_GID_SET))
- seq_printf(seq, ",gid=%u", sbi->s_gid);
+ seq_printf(seq, ",gid=%u", from_kgid(&init_user_ns, sbi->s_gid));
if (sbi->s_umask != 0)
- seq_printf(seq, ",umask=%o", sbi->s_umask);
+ seq_printf(seq, ",umask=%ho", sbi->s_umask);
+ if (sbi->s_fmode != UDF_INVALID_MODE)
+ seq_printf(seq, ",mode=%ho", sbi->s_fmode);
+ if (sbi->s_dmode != UDF_INVALID_MODE)
+ seq_printf(seq, ",dmode=%ho", sbi->s_dmode);
if (UDF_QUERY_FLAG(sb, UDF_FLAG_SESSION_SET))
seq_printf(seq, ",session=%u", sbi->s_session);
if (UDF_QUERY_FLAG(sb, UDF_FLAG_LASTBLOCK_SET))
seq_printf(seq, ",lastblock=%u", sbi->s_last_block);
- /*
- * s_anchor[2] could be zeroed out in case there is no anchor
- * in the specified block, but then the "anchor=N" option
- * originally given by the user wasn't effective, so it's OK
- * if we don't show it.
- */
- if (sbi->s_anchor[2] != 0)
- seq_printf(seq, ",anchor=%u", sbi->s_anchor[2]);
+ if (sbi->s_anchor != 0)
+ seq_printf(seq, ",anchor=%u", sbi->s_anchor);
/*
* volume, partition, fileset and rootdir seem to be ignored
* currently
@@ -319,6 +397,8 @@ static int udf_show_options(struct seq_file *seq, struct vfsmount *mnt)
*
* gid= Set the default group.
* umask= Set the default umask.
+ * mode= Set the default file permissions.
+ * dmode= Set the default directory permissions.
* uid= Set the default user.
* bs= Set the block size.
* unhide Show otherwise hidden files.
@@ -368,10 +448,11 @@ enum {
Opt_gid, Opt_uid, Opt_umask, Opt_session, Opt_lastblock,
Opt_anchor, Opt_volume, Opt_partition, Opt_fileset,
Opt_rootdir, Opt_utf8, Opt_iocharset,
- Opt_err, Opt_uforget, Opt_uignore, Opt_gforget, Opt_gignore
+ Opt_err, Opt_uforget, Opt_uignore, Opt_gforget, Opt_gignore,
+ Opt_fmode, Opt_dmode
};
-static match_table_t tokens = {
+static const match_table_t tokens = {
{Opt_novrs, "novrs"},
{Opt_nostrict, "nostrict"},
{Opt_bs, "bs=%u"},
@@ -397,6 +478,8 @@ static match_table_t tokens = {
{Opt_rootdir, "rootdir=%u"},
{Opt_utf8, "utf8"},
{Opt_iocharset, "iocharset=%s"},
+ {Opt_fmode, "mode=%o"},
+ {Opt_dmode, "dmode=%o"},
{Opt_err, NULL}
};
@@ -407,7 +490,6 @@ static int udf_parse_options(char *options, struct udf_options *uopt,
int option;
uopt->novrs = 0;
- uopt->blocksize = UDF_DEFAULT_BLOCKSIZE;
uopt->partition = 0xFFFF;
uopt->session = 0xFFFFFFFF;
uopt->lastblock = 0;
@@ -423,6 +505,7 @@ static int udf_parse_options(char *options, struct udf_options *uopt,
while ((p = strsep(&options, ",")) != NULL) {
substring_t args[MAX_OPT_ARGS];
int token;
+ unsigned n;
if (!*p)
continue;
@@ -430,10 +513,15 @@ static int udf_parse_options(char *options, struct udf_options *uopt,
switch (token) {
case Opt_novrs:
uopt->novrs = 1;
+ break;
case Opt_bs:
if (match_int(&args[0], &option))
return 0;
- uopt->blocksize = option;
+ n = option;
+ if (n != 512 && n != 1024 && n != 2048 && n != 4096)
+ return 0;
+ uopt->blocksize = n;
+ uopt->flags |= (1 << UDF_FLAG_BLOCKSIZE_SET);
break;
case Opt_unhide:
uopt->flags |= (1 << UDF_FLAG_UNHIDE);
@@ -456,13 +544,17 @@ static int udf_parse_options(char *options, struct udf_options *uopt,
case Opt_gid:
if (match_int(args, &option))
return 0;
- uopt->gid = option;
+ uopt->gid = make_kgid(current_user_ns(), option);
+ if (!gid_valid(uopt->gid))
+ return 0;
uopt->flags |= (1 << UDF_FLAG_GID_SET);
break;
case Opt_uid:
if (match_int(args, &option))
return 0;
- uopt->uid = option;
+ uopt->uid = make_kuid(current_user_ns(), option);
+ if (!uid_valid(uopt->uid))
+ return 0;
uopt->flags |= (1 << UDF_FLAG_UID_SET);
break;
case Opt_umask:
@@ -533,114 +625,82 @@ static int udf_parse_options(char *options, struct udf_options *uopt,
case Opt_gforget:
uopt->flags |= (1 << UDF_FLAG_GID_FORGET);
break;
+ case Opt_fmode:
+ if (match_octal(args, &option))
+ return 0;
+ uopt->fmode = option & 0777;
+ break;
+ case Opt_dmode:
+ if (match_octal(args, &option))
+ return 0;
+ uopt->dmode = option & 0777;
+ break;
default:
- printk(KERN_ERR "udf: bad mount option \"%s\" "
- "or missing value\n", p);
+ pr_err("bad mount option \"%s\" or missing value\n", p);
return 0;
}
}
return 1;
}
-static void udf_write_super(struct super_block *sb)
-{
- lock_kernel();
-
- if (!(sb->s_flags & MS_RDONLY))
- udf_open_lvid(sb);
- sb->s_dirt = 0;
-
- unlock_kernel();
-}
-
static int udf_remount_fs(struct super_block *sb, int *flags, char *options)
{
struct udf_options uopt;
struct udf_sb_info *sbi = UDF_SB(sb);
+ int error = 0;
+ struct logicalVolIntegrityDescImpUse *lvidiu = udf_sb_lvidiu(sb);
+
+ sync_filesystem(sb);
+ if (lvidiu) {
+ int write_rev = le16_to_cpu(lvidiu->minUDFWriteRev);
+ if (write_rev > UDF_MAX_WRITE_VERSION && !(*flags & MS_RDONLY))
+ return -EACCES;
+ }
uopt.flags = sbi->s_flags;
uopt.uid = sbi->s_uid;
uopt.gid = sbi->s_gid;
uopt.umask = sbi->s_umask;
+ uopt.fmode = sbi->s_fmode;
+ uopt.dmode = sbi->s_dmode;
if (!udf_parse_options(options, &uopt, true))
return -EINVAL;
+ write_lock(&sbi->s_cred_lock);
sbi->s_flags = uopt.flags;
sbi->s_uid = uopt.uid;
sbi->s_gid = uopt.gid;
sbi->s_umask = uopt.umask;
-
- if (sbi->s_lvid_bh) {
- int write_rev = le16_to_cpu(udf_sb_lvidiu(sbi)->minUDFWriteRev);
- if (write_rev > UDF_MAX_WRITE_VERSION)
- *flags |= MS_RDONLY;
- }
+ sbi->s_fmode = uopt.fmode;
+ sbi->s_dmode = uopt.dmode;
+ write_unlock(&sbi->s_cred_lock);
if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY))
- return 0;
+ goto out_unlock;
+
if (*flags & MS_RDONLY)
udf_close_lvid(sb);
else
udf_open_lvid(sb);
- return 0;
+out_unlock:
+ return error;
}
-/*
- * udf_set_blocksize
- *
- * PURPOSE
- * Set the block size to be used in all transfers.
- *
- * DESCRIPTION
- * To allow room for a DMA transfer, it is best to guess big when unsure.
- * This routine picks 2048 bytes as the blocksize when guessing. This
- * should be adequate until devices with larger block sizes become common.
- *
- * Note that the Linux kernel can currently only deal with blocksizes of
- * 512, 1024, 2048, 4096, and 8192 bytes.
- *
- * PRE-CONDITIONS
- * sb Pointer to _locked_ superblock.
- *
- * POST-CONDITIONS
- * sb->s_blocksize Blocksize.
- * sb->s_blocksize_bits log2 of blocksize.
- * <return> 0 Blocksize is valid.
- * <return> 1 Blocksize is invalid.
- *
- * HISTORY
- * July 1, 1997 - Andrew E. Mileski
- * Written, tested, and released.
- */
-static int udf_set_blocksize(struct super_block *sb, int bsize)
-{
- if (!sb_min_blocksize(sb, bsize)) {
- udf_debug("Bad block size (%d)\n", bsize);
- printk(KERN_ERR "udf: bad block size (%d)\n", bsize);
- return 0;
- }
-
- return sb->s_blocksize;
-}
-
-static int udf_vrs(struct super_block *sb, int silent)
+/* Check Volume Structure Descriptors (ECMA 167 2/9.1) */
+/* We also check any "CD-ROM Volume Descriptor Set" (ECMA 167 2/8.3.1) */
+static loff_t udf_check_vsd(struct super_block *sb)
{
struct volStructDesc *vsd = NULL;
- int sector = 32768;
+ loff_t sector = VSD_FIRST_SECTOR_OFFSET;
int sectorsize;
struct buffer_head *bh = NULL;
- int iso9660 = 0;
int nsr02 = 0;
int nsr03 = 0;
struct udf_sb_info *sbi;
- /* Block size must be a multiple of 512 */
- if (sb->s_blocksize & 511)
- return 0;
sbi = UDF_SB(sb);
-
if (sb->s_blocksize < sizeof(struct volStructDesc))
sectorsize = sizeof(struct volStructDesc);
else
@@ -649,9 +709,20 @@ static int udf_vrs(struct super_block *sb, int silent)
sector += (sbi->s_session << sb->s_blocksize_bits);
udf_debug("Starting at sector %u (%ld byte sectors)\n",
- (sector >> sb->s_blocksize_bits), sb->s_blocksize);
- /* Process the sequence (if applicable) */
- for (; !nsr02 && !nsr03; sector += sectorsize) {
+ (unsigned int)(sector >> sb->s_blocksize_bits),
+ sb->s_blocksize);
+ /* Process the sequence (if applicable). The hard limit on the sector
+ * offset is arbitrary, hopefully large enough so that all valid UDF
+ * filesystems will be recognised. There is no mention of an upper
+ * bound to the size of the volume recognition area in the standard.
+ * The limit will prevent the code to read all the sectors of a
+ * specially crafted image (like a bluray disc full of CD001 sectors),
+ * potentially causing minutes or even hours of uninterruptible I/O
+ * activity. This actually happened with uninitialised SSD partitions
+ * (all 0xFF) before the check for the limit and all valid IDs were
+ * added */
+ for (; !nsr02 && !nsr03 && sector < VSD_MAX_SECTOR_OFFSET;
+ sector += sectorsize) {
/* Read a block */
bh = udf_tread(sb, sector >> sb->s_blocksize_bits);
if (!bh)
@@ -661,31 +732,23 @@ static int udf_vrs(struct super_block *sb, int silent)
vsd = (struct volStructDesc *)(bh->b_data +
(sector & (sb->s_blocksize - 1)));
- if (vsd->stdIdent[0] == 0) {
- brelse(bh);
- break;
- } else if (!strncmp(vsd->stdIdent, VSD_STD_ID_CD001,
+ if (!strncmp(vsd->stdIdent, VSD_STD_ID_CD001,
VSD_STD_ID_LEN)) {
- iso9660 = sector;
switch (vsd->structType) {
case 0:
udf_debug("ISO9660 Boot Record found\n");
break;
case 1:
- udf_debug("ISO9660 Primary Volume Descriptor "
- "found\n");
+ udf_debug("ISO9660 Primary Volume Descriptor found\n");
break;
case 2:
- udf_debug("ISO9660 Supplementary Volume "
- "Descriptor found\n");
+ udf_debug("ISO9660 Supplementary Volume Descriptor found\n");
break;
case 3:
- udf_debug("ISO9660 Volume Partition Descriptor "
- "found\n");
+ udf_debug("ISO9660 Volume Partition Descriptor found\n");
break;
case 255:
- udf_debug("ISO9660 Volume Descriptor Set "
- "Terminator found\n");
+ udf_debug("ISO9660 Volume Descriptor Set Terminator found\n");
break;
default:
udf_debug("ISO9660 VRS (%u) found\n",
@@ -705,6 +768,17 @@ static int udf_vrs(struct super_block *sb, int silent)
else if (!strncmp(vsd->stdIdent, VSD_STD_ID_NSR03,
VSD_STD_ID_LEN))
nsr03 = sector;
+ else if (!strncmp(vsd->stdIdent, VSD_STD_ID_BOOT2,
+ VSD_STD_ID_LEN))
+ ; /* nothing */
+ else if (!strncmp(vsd->stdIdent, VSD_STD_ID_CDW02,
+ VSD_STD_ID_LEN))
+ ; /* nothing */
+ else {
+ /* invalid id : end of volume recognition area */
+ brelse(bh);
+ break;
+ }
brelse(bh);
}
@@ -712,178 +786,16 @@ static int udf_vrs(struct super_block *sb, int silent)
return nsr03;
else if (nsr02)
return nsr02;
- else if (sector - (sbi->s_session << sb->s_blocksize_bits) == 32768)
+ else if (!bh && sector - (sbi->s_session << sb->s_blocksize_bits) ==
+ VSD_FIRST_SECTOR_OFFSET)
return -1;
else
return 0;
}
-/*
- * udf_find_anchor
- *
- * PURPOSE
- * Find an anchor volume descriptor.
- *
- * PRE-CONDITIONS
- * sb Pointer to _locked_ superblock.
- * lastblock Last block on media.
- *
- * POST-CONDITIONS
- * <return> 1 if not found, 0 if ok
- *
- * HISTORY
- * July 1, 1997 - Andrew E. Mileski
- * Written, tested, and released.
- */
-static void udf_find_anchor(struct super_block *sb)
-{
- int lastblock;
- struct buffer_head *bh = NULL;
- uint16_t ident;
- uint32_t location;
- int i;
- struct udf_sb_info *sbi;
-
- sbi = UDF_SB(sb);
- lastblock = sbi->s_last_block;
-
- if (lastblock) {
- int varlastblock = udf_variable_to_fixed(lastblock);
- int last[] = { lastblock, lastblock - 2,
- lastblock - 150, lastblock - 152,
- varlastblock, varlastblock - 2,
- varlastblock - 150, varlastblock - 152 };
-
- lastblock = 0;
-
- /* Search for an anchor volume descriptor pointer */
-
- /* according to spec, anchor is in either:
- * block 256
- * lastblock-256
- * lastblock
- * however, if the disc isn't closed, it could be 512 */
-
- for (i = 0; !lastblock && i < ARRAY_SIZE(last); i++) {
- ident = location = 0;
- if (last[i] >= 0) {
- bh = sb_bread(sb, last[i]);
- if (bh) {
- tag *t = (tag *)bh->b_data;
- ident = le16_to_cpu(t->tagIdent);
- location = le32_to_cpu(t->tagLocation);
- brelse(bh);
- }
- }
-
- if (ident == TAG_IDENT_AVDP) {
- if (location == last[i] - sbi->s_session) {
- lastblock = last[i] - sbi->s_session;
- sbi->s_anchor[0] = lastblock;
- sbi->s_anchor[1] = lastblock - 256;
- } else if (location ==
- udf_variable_to_fixed(last[i]) -
- sbi->s_session) {
- UDF_SET_FLAG(sb, UDF_FLAG_VARCONV);
- lastblock =
- udf_variable_to_fixed(last[i]) -
- sbi->s_session;
- sbi->s_anchor[0] = lastblock;
- sbi->s_anchor[1] = lastblock - 256 -
- sbi->s_session;
- } else {
- udf_debug("Anchor found at block %d, "
- "location mismatch %d.\n",
- last[i], location);
- }
- } else if (ident == TAG_IDENT_FE ||
- ident == TAG_IDENT_EFE) {
- lastblock = last[i];
- sbi->s_anchor[3] = 512;
- } else {
- ident = location = 0;
- if (last[i] >= 256) {
- bh = sb_bread(sb, last[i] - 256);
- if (bh) {
- tag *t = (tag *)bh->b_data;
- ident = le16_to_cpu(
- t->tagIdent);
- location = le32_to_cpu(
- t->tagLocation);
- brelse(bh);
- }
- }
-
- if (ident == TAG_IDENT_AVDP &&
- location == last[i] - 256 -
- sbi->s_session) {
- lastblock = last[i];
- sbi->s_anchor[1] = last[i] - 256;
- } else {
- ident = location = 0;
- if (last[i] >= 312 + sbi->s_session) {
- bh = sb_bread(sb,
- last[i] - 312 -
- sbi->s_session);
- if (bh) {
- tag *t = (tag *)
- bh->b_data;
- ident = le16_to_cpu(
- t->tagIdent);
- location = le32_to_cpu(
- t->tagLocation);
- brelse(bh);
- }
- }
-
- if (ident == TAG_IDENT_AVDP &&
- location == udf_variable_to_fixed(last[i]) - 256) {
- UDF_SET_FLAG(sb,
- UDF_FLAG_VARCONV);
- lastblock = udf_variable_to_fixed(last[i]);
- sbi->s_anchor[1] = lastblock - 256;
- }
- }
- }
- }
- }
-
- if (!lastblock) {
- /* We haven't found the lastblock. check 312 */
- bh = sb_bread(sb, 312 + sbi->s_session);
- if (bh) {
- tag *t = (tag *)bh->b_data;
- ident = le16_to_cpu(t->tagIdent);
- location = le32_to_cpu(t->tagLocation);
- brelse(bh);
-
- if (ident == TAG_IDENT_AVDP && location == 256)
- UDF_SET_FLAG(sb, UDF_FLAG_VARCONV);
- }
- }
-
- for (i = 0; i < ARRAY_SIZE(sbi->s_anchor); i++) {
- if (sbi->s_anchor[i]) {
- bh = udf_read_tagged(sb, sbi->s_anchor[i],
- sbi->s_anchor[i], &ident);
- if (!bh)
- sbi->s_anchor[i] = 0;
- else {
- brelse(bh);
- if ((ident != TAG_IDENT_AVDP) &&
- (i || (ident != TAG_IDENT_FE &&
- ident != TAG_IDENT_EFE)))
- sbi->s_anchor[i] = 0;
- }
- }
- }
-
- sbi->s_last_block = lastblock;
-}
-
static int udf_find_fileset(struct super_block *sb,
- kernel_lb_addr *fileset,
- kernel_lb_addr *root)
+ struct kernel_lb_addr *fileset,
+ struct kernel_lb_addr *root)
{
struct buffer_head *bh = NULL;
long lastblock;
@@ -892,7 +804,7 @@ static int udf_find_fileset(struct super_block *sb,
if (fileset->logicalBlockNum != 0xFFFFFFFF ||
fileset->partitionReferenceNum != 0xFFFF) {
- bh = udf_read_ptagged(sb, *fileset, 0, &ident);
+ bh = udf_read_ptagged(sb, fileset, 0, &ident);
if (!bh) {
return 1;
@@ -906,7 +818,7 @@ static int udf_find_fileset(struct super_block *sb,
sbi = UDF_SB(sb);
if (!bh) {
/* Search backwards through the partitions */
- kernel_lb_addr newfileset;
+ struct kernel_lb_addr newfileset;
/* --> cvg: FIXME - is it reasonable? */
return 1;
@@ -922,7 +834,7 @@ static int udf_find_fileset(struct super_block *sb,
newfileset.logicalBlockNum = 0;
do {
- bh = udf_read_ptagged(sb, newfileset, 0,
+ bh = udf_read_ptagged(sb, &newfileset, 0,
&ident);
if (!bh) {
newfileset.logicalBlockNum++;
@@ -971,44 +883,155 @@ static int udf_find_fileset(struct super_block *sb,
return 1;
}
-static void udf_load_pvoldesc(struct super_block *sb, struct buffer_head *bh)
+/*
+ * Load primary Volume Descriptor Sequence
+ *
+ * Return <0 on error, 0 on success. -EAGAIN is special meaning next sequence
+ * should be tried.
+ */
+static int udf_load_pvoldesc(struct super_block *sb, sector_t block)
{
struct primaryVolDesc *pvoldesc;
- time_t recording;
- long recording_usec;
- struct ustr instr;
- struct ustr outstr;
+ struct ustr *instr, *outstr;
+ struct buffer_head *bh;
+ uint16_t ident;
+ int ret = -ENOMEM;
+
+ instr = kmalloc(sizeof(struct ustr), GFP_NOFS);
+ if (!instr)
+ return -ENOMEM;
+
+ outstr = kmalloc(sizeof(struct ustr), GFP_NOFS);
+ if (!outstr)
+ goto out1;
+
+ bh = udf_read_tagged(sb, block, block, &ident);
+ if (!bh) {
+ ret = -EAGAIN;
+ goto out2;
+ }
+
+ if (ident != TAG_IDENT_PVD) {
+ ret = -EIO;
+ goto out_bh;
+ }
pvoldesc = (struct primaryVolDesc *)bh->b_data;
- if (udf_stamp_to_time(&recording, &recording_usec,
- lets_to_cpu(pvoldesc->recordingDateAndTime))) {
- kernel_timestamp ts;
- ts = lets_to_cpu(pvoldesc->recordingDateAndTime);
- udf_debug("recording time %ld/%ld, %04u/%02u/%02u"
- " %02u:%02u (%x)\n",
- recording, recording_usec,
- ts.year, ts.month, ts.day, ts.hour,
- ts.minute, ts.typeAndTimezone);
- UDF_SB(sb)->s_record_time.tv_sec = recording;
- UDF_SB(sb)->s_record_time.tv_nsec = recording_usec * 1000;
- }
-
- if (!udf_build_ustr(&instr, pvoldesc->volIdent, 32))
- if (udf_CS0toUTF8(&outstr, &instr)) {
- strncpy(UDF_SB(sb)->s_volume_ident, outstr.u_name,
- outstr.u_len > 31 ? 31 : outstr.u_len);
+ if (udf_disk_stamp_to_time(&UDF_SB(sb)->s_record_time,
+ pvoldesc->recordingDateAndTime)) {
+#ifdef UDFFS_DEBUG
+ struct timestamp *ts = &pvoldesc->recordingDateAndTime;
+ udf_debug("recording time %04u/%02u/%02u %02u:%02u (%x)\n",
+ le16_to_cpu(ts->year), ts->month, ts->day, ts->hour,
+ ts->minute, le16_to_cpu(ts->typeAndTimezone));
+#endif
+ }
+
+ if (!udf_build_ustr(instr, pvoldesc->volIdent, 32))
+ if (udf_CS0toUTF8(outstr, instr)) {
+ strncpy(UDF_SB(sb)->s_volume_ident, outstr->u_name,
+ outstr->u_len > 31 ? 31 : outstr->u_len);
udf_debug("volIdent[] = '%s'\n",
- UDF_SB(sb)->s_volume_ident);
+ UDF_SB(sb)->s_volume_ident);
}
- if (!udf_build_ustr(&instr, pvoldesc->volSetIdent, 128))
- if (udf_CS0toUTF8(&outstr, &instr))
- udf_debug("volSetIdent[] = '%s'\n", outstr.u_name);
+ if (!udf_build_ustr(instr, pvoldesc->volSetIdent, 128))
+ if (udf_CS0toUTF8(outstr, instr))
+ udf_debug("volSetIdent[] = '%s'\n", outstr->u_name);
+
+ ret = 0;
+out_bh:
+ brelse(bh);
+out2:
+ kfree(outstr);
+out1:
+ kfree(instr);
+ return ret;
+}
+
+struct inode *udf_find_metadata_inode_efe(struct super_block *sb,
+ u32 meta_file_loc, u32 partition_num)
+{
+ struct kernel_lb_addr addr;
+ struct inode *metadata_fe;
+
+ addr.logicalBlockNum = meta_file_loc;
+ addr.partitionReferenceNum = partition_num;
+
+ metadata_fe = udf_iget(sb, &addr);
+
+ if (metadata_fe == NULL)
+ udf_warn(sb, "metadata inode efe not found\n");
+ else if (UDF_I(metadata_fe)->i_alloc_type != ICBTAG_FLAG_AD_SHORT) {
+ udf_warn(sb, "metadata inode efe does not have short allocation descriptors!\n");
+ iput(metadata_fe);
+ metadata_fe = NULL;
+ }
+
+ return metadata_fe;
+}
+
+static int udf_load_metadata_files(struct super_block *sb, int partition)
+{
+ struct udf_sb_info *sbi = UDF_SB(sb);
+ struct udf_part_map *map;
+ struct udf_meta_data *mdata;
+ struct kernel_lb_addr addr;
+
+ map = &sbi->s_partmaps[partition];
+ mdata = &map->s_type_specific.s_metadata;
+
+ /* metadata address */
+ udf_debug("Metadata file location: block = %d part = %d\n",
+ mdata->s_meta_file_loc, map->s_partition_num);
+
+ mdata->s_metadata_fe = udf_find_metadata_inode_efe(sb,
+ mdata->s_meta_file_loc, map->s_partition_num);
+
+ if (mdata->s_metadata_fe == NULL) {
+ /* mirror file entry */
+ udf_debug("Mirror metadata file location: block = %d part = %d\n",
+ mdata->s_mirror_file_loc, map->s_partition_num);
+
+ mdata->s_mirror_fe = udf_find_metadata_inode_efe(sb,
+ mdata->s_mirror_file_loc, map->s_partition_num);
+
+ if (mdata->s_mirror_fe == NULL) {
+ udf_err(sb, "Both metadata and mirror metadata inode efe can not found\n");
+ return -EIO;
+ }
+ }
+
+ /*
+ * bitmap file entry
+ * Note:
+ * Load only if bitmap file location differs from 0xFFFFFFFF (DCN-5102)
+ */
+ if (mdata->s_bitmap_file_loc != 0xFFFFFFFF) {
+ addr.logicalBlockNum = mdata->s_bitmap_file_loc;
+ addr.partitionReferenceNum = map->s_partition_num;
+
+ udf_debug("Bitmap file location: block = %d part = %d\n",
+ addr.logicalBlockNum, addr.partitionReferenceNum);
+
+ mdata->s_bitmap_fe = udf_iget(sb, &addr);
+ if (mdata->s_bitmap_fe == NULL) {
+ if (sb->s_flags & MS_RDONLY)
+ udf_warn(sb, "bitmap inode efe not found but it's ok since the disc is mounted read-only\n");
+ else {
+ udf_err(sb, "bitmap inode efe not found and attempted read-write mount\n");
+ return -EIO;
+ }
+ }
+ }
+
+ udf_debug("udf_load_metadata_files Ok\n");
+ return 0;
}
static void udf_load_fileset(struct super_block *sb, struct buffer_head *bh,
- kernel_lb_addr *root)
+ struct kernel_lb_addr *root)
{
struct fileSetDesc *fset;
@@ -1025,10 +1048,9 @@ static void udf_load_fileset(struct super_block *sb, struct buffer_head *bh,
int udf_compute_nr_groups(struct super_block *sb, u32 partition)
{
struct udf_part_map *map = &UDF_SB(sb)->s_partmaps[partition];
- return (map->s_partition_len +
- (sizeof(struct spaceBitmapDesc) << 3) +
- (sb->s_blocksize * 8) - 1) /
- (sb->s_blocksize * 8);
+ return DIV_ROUND_UP(map->s_partition_len +
+ (sizeof(struct spaceBitmapDesc) << 3),
+ sb->s_blocksize * 8);
}
static struct udf_bitmap *udf_sb_alloc_bitmap(struct super_block *sb, u32 index)
@@ -1042,167 +1064,370 @@ static struct udf_bitmap *udf_sb_alloc_bitmap(struct super_block *sb, u32 index)
(sizeof(struct buffer_head *) * nr_groups);
if (size <= PAGE_SIZE)
- bitmap = kmalloc(size, GFP_KERNEL);
+ bitmap = kzalloc(size, GFP_KERNEL);
else
- bitmap = vmalloc(size); /* TODO: get rid of vmalloc */
+ bitmap = vzalloc(size); /* TODO: get rid of vzalloc */
- if (bitmap == NULL) {
- udf_error(sb, __FUNCTION__,
- "Unable to allocate space for bitmap "
- "and %d buffer_head pointers", nr_groups);
+ if (bitmap == NULL)
return NULL;
- }
- memset(bitmap, 0x00, size);
- bitmap->s_block_bitmap = (struct buffer_head **)(bitmap + 1);
bitmap->s_nr_groups = nr_groups;
return bitmap;
}
-static int udf_load_partdesc(struct super_block *sb, struct buffer_head *bh)
+static int udf_fill_partdesc_info(struct super_block *sb,
+ struct partitionDesc *p, int p_index)
{
+ struct udf_part_map *map;
+ struct udf_sb_info *sbi = UDF_SB(sb);
+ struct partitionHeaderDesc *phd;
+
+ map = &sbi->s_partmaps[p_index];
+
+ map->s_partition_len = le32_to_cpu(p->partitionLength); /* blocks */
+ map->s_partition_root = le32_to_cpu(p->partitionStartingLocation);
+
+ if (p->accessType == cpu_to_le32(PD_ACCESS_TYPE_READ_ONLY))
+ map->s_partition_flags |= UDF_PART_FLAG_READ_ONLY;
+ if (p->accessType == cpu_to_le32(PD_ACCESS_TYPE_WRITE_ONCE))
+ map->s_partition_flags |= UDF_PART_FLAG_WRITE_ONCE;
+ if (p->accessType == cpu_to_le32(PD_ACCESS_TYPE_REWRITABLE))
+ map->s_partition_flags |= UDF_PART_FLAG_REWRITABLE;
+ if (p->accessType == cpu_to_le32(PD_ACCESS_TYPE_OVERWRITABLE))
+ map->s_partition_flags |= UDF_PART_FLAG_OVERWRITABLE;
+
+ udf_debug("Partition (%d type %x) starts at physical %d, block length %d\n",
+ p_index, map->s_partition_type,
+ map->s_partition_root, map->s_partition_len);
+
+ if (strcmp(p->partitionContents.ident, PD_PARTITION_CONTENTS_NSR02) &&
+ strcmp(p->partitionContents.ident, PD_PARTITION_CONTENTS_NSR03))
+ return 0;
+
+ phd = (struct partitionHeaderDesc *)p->partitionContentsUse;
+ if (phd->unallocSpaceTable.extLength) {
+ struct kernel_lb_addr loc = {
+ .logicalBlockNum = le32_to_cpu(
+ phd->unallocSpaceTable.extPosition),
+ .partitionReferenceNum = p_index,
+ };
+
+ map->s_uspace.s_table = udf_iget(sb, &loc);
+ if (!map->s_uspace.s_table) {
+ udf_debug("cannot load unallocSpaceTable (part %d)\n",
+ p_index);
+ return -EIO;
+ }
+ map->s_partition_flags |= UDF_PART_FLAG_UNALLOC_TABLE;
+ udf_debug("unallocSpaceTable (part %d) @ %ld\n",
+ p_index, map->s_uspace.s_table->i_ino);
+ }
+
+ if (phd->unallocSpaceBitmap.extLength) {
+ struct udf_bitmap *bitmap = udf_sb_alloc_bitmap(sb, p_index);
+ if (!bitmap)
+ return -ENOMEM;
+ map->s_uspace.s_bitmap = bitmap;
+ bitmap->s_extPosition = le32_to_cpu(
+ phd->unallocSpaceBitmap.extPosition);
+ map->s_partition_flags |= UDF_PART_FLAG_UNALLOC_BITMAP;
+ udf_debug("unallocSpaceBitmap (part %d) @ %d\n",
+ p_index, bitmap->s_extPosition);
+ }
+
+ if (phd->partitionIntegrityTable.extLength)
+ udf_debug("partitionIntegrityTable (part %d)\n", p_index);
+
+ if (phd->freedSpaceTable.extLength) {
+ struct kernel_lb_addr loc = {
+ .logicalBlockNum = le32_to_cpu(
+ phd->freedSpaceTable.extPosition),
+ .partitionReferenceNum = p_index,
+ };
+
+ map->s_fspace.s_table = udf_iget(sb, &loc);
+ if (!map->s_fspace.s_table) {
+ udf_debug("cannot load freedSpaceTable (part %d)\n",
+ p_index);
+ return -EIO;
+ }
+
+ map->s_partition_flags |= UDF_PART_FLAG_FREED_TABLE;
+ udf_debug("freedSpaceTable (part %d) @ %ld\n",
+ p_index, map->s_fspace.s_table->i_ino);
+ }
+
+ if (phd->freedSpaceBitmap.extLength) {
+ struct udf_bitmap *bitmap = udf_sb_alloc_bitmap(sb, p_index);
+ if (!bitmap)
+ return -ENOMEM;
+ map->s_fspace.s_bitmap = bitmap;
+ bitmap->s_extPosition = le32_to_cpu(
+ phd->freedSpaceBitmap.extPosition);
+ map->s_partition_flags |= UDF_PART_FLAG_FREED_BITMAP;
+ udf_debug("freedSpaceBitmap (part %d) @ %d\n",
+ p_index, bitmap->s_extPosition);
+ }
+ return 0;
+}
+
+static void udf_find_vat_block(struct super_block *sb, int p_index,
+ int type1_index, sector_t start_block)
+{
+ struct udf_sb_info *sbi = UDF_SB(sb);
+ struct udf_part_map *map = &sbi->s_partmaps[p_index];
+ sector_t vat_block;
+ struct kernel_lb_addr ino;
+
+ /*
+ * VAT file entry is in the last recorded block. Some broken disks have
+ * it a few blocks before so try a bit harder...
+ */
+ ino.partitionReferenceNum = type1_index;
+ for (vat_block = start_block;
+ vat_block >= map->s_partition_root &&
+ vat_block >= start_block - 3 &&
+ !sbi->s_vat_inode; vat_block--) {
+ ino.logicalBlockNum = vat_block - map->s_partition_root;
+ sbi->s_vat_inode = udf_iget(sb, &ino);
+ }
+}
+
+static int udf_load_vat(struct super_block *sb, int p_index, int type1_index)
+{
+ struct udf_sb_info *sbi = UDF_SB(sb);
+ struct udf_part_map *map = &sbi->s_partmaps[p_index];
+ struct buffer_head *bh = NULL;
+ struct udf_inode_info *vati;
+ uint32_t pos;
+ struct virtualAllocationTable20 *vat20;
+ sector_t blocks = sb->s_bdev->bd_inode->i_size >> sb->s_blocksize_bits;
+
+ udf_find_vat_block(sb, p_index, type1_index, sbi->s_last_block);
+ if (!sbi->s_vat_inode &&
+ sbi->s_last_block != blocks - 1) {
+ pr_notice("Failed to read VAT inode from the last recorded block (%lu), retrying with the last block of the device (%lu).\n",
+ (unsigned long)sbi->s_last_block,
+ (unsigned long)blocks - 1);
+ udf_find_vat_block(sb, p_index, type1_index, blocks - 1);
+ }
+ if (!sbi->s_vat_inode)
+ return -EIO;
+
+ if (map->s_partition_type == UDF_VIRTUAL_MAP15) {
+ map->s_type_specific.s_virtual.s_start_offset = 0;
+ map->s_type_specific.s_virtual.s_num_entries =
+ (sbi->s_vat_inode->i_size - 36) >> 2;
+ } else if (map->s_partition_type == UDF_VIRTUAL_MAP20) {
+ vati = UDF_I(sbi->s_vat_inode);
+ if (vati->i_alloc_type != ICBTAG_FLAG_AD_IN_ICB) {
+ pos = udf_block_map(sbi->s_vat_inode, 0);
+ bh = sb_bread(sb, pos);
+ if (!bh)
+ return -EIO;
+ vat20 = (struct virtualAllocationTable20 *)bh->b_data;
+ } else {
+ vat20 = (struct virtualAllocationTable20 *)
+ vati->i_ext.i_data;
+ }
+
+ map->s_type_specific.s_virtual.s_start_offset =
+ le16_to_cpu(vat20->lengthHeader);
+ map->s_type_specific.s_virtual.s_num_entries =
+ (sbi->s_vat_inode->i_size -
+ map->s_type_specific.s_virtual.
+ s_start_offset) >> 2;
+ brelse(bh);
+ }
+ return 0;
+}
+
+/*
+ * Load partition descriptor block
+ *
+ * Returns <0 on error, 0 on success, -EAGAIN is special - try next descriptor
+ * sequence.
+ */
+static int udf_load_partdesc(struct super_block *sb, sector_t block)
+{
+ struct buffer_head *bh;
struct partitionDesc *p;
- int i;
struct udf_part_map *map;
- struct udf_sb_info *sbi;
+ struct udf_sb_info *sbi = UDF_SB(sb);
+ int i, type1_idx;
+ uint16_t partitionNumber;
+ uint16_t ident;
+ int ret;
+
+ bh = udf_read_tagged(sb, block, block, &ident);
+ if (!bh)
+ return -EAGAIN;
+ if (ident != TAG_IDENT_PD) {
+ ret = 0;
+ goto out_bh;
+ }
p = (struct partitionDesc *)bh->b_data;
- sbi = UDF_SB(sb);
+ partitionNumber = le16_to_cpu(p->partitionNumber);
+ /* First scan for TYPE1, SPARABLE and METADATA partitions */
for (i = 0; i < sbi->s_partitions; i++) {
map = &sbi->s_partmaps[i];
udf_debug("Searching map: (%d == %d)\n",
- map->s_partition_num,
- le16_to_cpu(p->partitionNumber));
- if (map->s_partition_num ==
- le16_to_cpu(p->partitionNumber)) {
- map->s_partition_len =
- le32_to_cpu(p->partitionLength); /* blocks */
- map->s_partition_root =
- le32_to_cpu(p->partitionStartingLocation);
- if (p->accessType ==
- cpu_to_le32(PD_ACCESS_TYPE_READ_ONLY))
- map->s_partition_flags |=
- UDF_PART_FLAG_READ_ONLY;
- if (p->accessType ==
- cpu_to_le32(PD_ACCESS_TYPE_WRITE_ONCE))
- map->s_partition_flags |=
- UDF_PART_FLAG_WRITE_ONCE;
- if (p->accessType ==
- cpu_to_le32(PD_ACCESS_TYPE_REWRITABLE))
- map->s_partition_flags |=
- UDF_PART_FLAG_REWRITABLE;
- if (p->accessType ==
- cpu_to_le32(PD_ACCESS_TYPE_OVERWRITABLE))
- map->s_partition_flags |=
- UDF_PART_FLAG_OVERWRITABLE;
-
- if (!strcmp(p->partitionContents.ident,
- PD_PARTITION_CONTENTS_NSR02) ||
- !strcmp(p->partitionContents.ident,
- PD_PARTITION_CONTENTS_NSR03)) {
- struct partitionHeaderDesc *phd;
-
- phd = (struct partitionHeaderDesc *)
- (p->partitionContentsUse);
- if (phd->unallocSpaceTable.extLength) {
- kernel_lb_addr loc = {
- .logicalBlockNum = le32_to_cpu(phd->unallocSpaceTable.extPosition),
- .partitionReferenceNum = i,
- };
-
- map->s_uspace.s_table =
- udf_iget(sb, loc);
- if (!map->s_uspace.s_table) {
- udf_debug("cannot load unallocSpaceTable (part %d)\n", i);
- return 1;
- }
- map->s_partition_flags |=
- UDF_PART_FLAG_UNALLOC_TABLE;
- udf_debug("unallocSpaceTable (part %d) @ %ld\n",
- i, map->s_uspace.s_table->i_ino);
- }
- if (phd->unallocSpaceBitmap.extLength) {
- struct udf_bitmap *bitmap =
- udf_sb_alloc_bitmap(sb, i);
- map->s_uspace.s_bitmap = bitmap;
- if (bitmap != NULL) {
- bitmap->s_extLength =
- le32_to_cpu(phd->unallocSpaceBitmap.extLength);
- bitmap->s_extPosition =
- le32_to_cpu(phd->unallocSpaceBitmap.extPosition);
- map->s_partition_flags |= UDF_PART_FLAG_UNALLOC_BITMAP;
- udf_debug("unallocSpaceBitmap (part %d) @ %d\n",
- i, bitmap->s_extPosition);
- }
- }
- if (phd->partitionIntegrityTable.extLength)
- udf_debug("partitionIntegrityTable (part %d)\n", i);
- if (phd->freedSpaceTable.extLength) {
- kernel_lb_addr loc = {
- .logicalBlockNum = le32_to_cpu(phd->freedSpaceTable.extPosition),
- .partitionReferenceNum = i,
- };
-
- map->s_fspace.s_table =
- udf_iget(sb, loc);
- if (!map->s_fspace.s_table) {
- udf_debug("cannot load freedSpaceTable (part %d)\n", i);
- return 1;
- }
- map->s_partition_flags |=
- UDF_PART_FLAG_FREED_TABLE;
- udf_debug("freedSpaceTable (part %d) @ %ld\n",
- i, map->s_fspace.s_table->i_ino);
- }
- if (phd->freedSpaceBitmap.extLength) {
- struct udf_bitmap *bitmap =
- udf_sb_alloc_bitmap(sb, i);
- map->s_fspace.s_bitmap = bitmap;
- if (bitmap != NULL) {
- bitmap->s_extLength =
- le32_to_cpu(phd->freedSpaceBitmap.extLength);
- bitmap->s_extPosition =
- le32_to_cpu(phd->freedSpaceBitmap.extPosition);
- map->s_partition_flags |= UDF_PART_FLAG_FREED_BITMAP;
- udf_debug("freedSpaceBitmap (part %d) @ %d\n",
- i, bitmap->s_extPosition);
- }
- }
- }
+ map->s_partition_num, partitionNumber);
+ if (map->s_partition_num == partitionNumber &&
+ (map->s_partition_type == UDF_TYPE1_MAP15 ||
+ map->s_partition_type == UDF_SPARABLE_MAP15))
break;
- }
}
- if (i == sbi->s_partitions)
+
+ if (i >= sbi->s_partitions) {
udf_debug("Partition (%d) not found in partition map\n",
- le16_to_cpu(p->partitionNumber));
- else
- udf_debug("Partition (%d:%d type %x) starts at physical %d, "
- "block length %d\n",
- le16_to_cpu(p->partitionNumber), i,
- map->s_partition_type,
- map->s_partition_root,
- map->s_partition_len);
+ partitionNumber);
+ ret = 0;
+ goto out_bh;
+ }
+
+ ret = udf_fill_partdesc_info(sb, p, i);
+ if (ret < 0)
+ goto out_bh;
+
+ /*
+ * Now rescan for VIRTUAL or METADATA partitions when SPARABLE and
+ * PHYSICAL partitions are already set up
+ */
+ type1_idx = i;
+#ifdef UDFFS_DEBUG
+ map = NULL; /* supress 'maybe used uninitialized' warning */
+#endif
+ for (i = 0; i < sbi->s_partitions; i++) {
+ map = &sbi->s_partmaps[i];
+
+ if (map->s_partition_num == partitionNumber &&
+ (map->s_partition_type == UDF_VIRTUAL_MAP15 ||
+ map->s_partition_type == UDF_VIRTUAL_MAP20 ||
+ map->s_partition_type == UDF_METADATA_MAP25))
+ break;
+ }
+
+ if (i >= sbi->s_partitions) {
+ ret = 0;
+ goto out_bh;
+ }
+
+ ret = udf_fill_partdesc_info(sb, p, i);
+ if (ret < 0)
+ goto out_bh;
+
+ if (map->s_partition_type == UDF_METADATA_MAP25) {
+ ret = udf_load_metadata_files(sb, i);
+ if (ret < 0) {
+ udf_err(sb, "error loading MetaData partition map %d\n",
+ i);
+ goto out_bh;
+ }
+ } else {
+ /*
+ * If we have a partition with virtual map, we don't handle
+ * writing to it (we overwrite blocks instead of relocating
+ * them).
+ */
+ if (!(sb->s_flags & MS_RDONLY)) {
+ ret = -EACCES;
+ goto out_bh;
+ }
+ ret = udf_load_vat(sb, i, type1_idx);
+ if (ret < 0)
+ goto out_bh;
+ }
+ ret = 0;
+out_bh:
+ /* In case loading failed, we handle cleanup in udf_fill_super */
+ brelse(bh);
+ return ret;
+}
+
+static int udf_load_sparable_map(struct super_block *sb,
+ struct udf_part_map *map,
+ struct sparablePartitionMap *spm)
+{
+ uint32_t loc;
+ uint16_t ident;
+ struct sparingTable *st;
+ struct udf_sparing_data *sdata = &map->s_type_specific.s_sparing;
+ int i;
+ struct buffer_head *bh;
+
+ map->s_partition_type = UDF_SPARABLE_MAP15;
+ sdata->s_packet_len = le16_to_cpu(spm->packetLength);
+ if (!is_power_of_2(sdata->s_packet_len)) {
+ udf_err(sb, "error loading logical volume descriptor: "
+ "Invalid packet length %u\n",
+ (unsigned)sdata->s_packet_len);
+ return -EIO;
+ }
+ if (spm->numSparingTables > 4) {
+ udf_err(sb, "error loading logical volume descriptor: "
+ "Too many sparing tables (%d)\n",
+ (int)spm->numSparingTables);
+ return -EIO;
+ }
+
+ for (i = 0; i < spm->numSparingTables; i++) {
+ loc = le32_to_cpu(spm->locSparingTable[i]);
+ bh = udf_read_tagged(sb, loc, loc, &ident);
+ if (!bh)
+ continue;
+
+ st = (struct sparingTable *)bh->b_data;
+ if (ident != 0 ||
+ strncmp(st->sparingIdent.ident, UDF_ID_SPARING,
+ strlen(UDF_ID_SPARING)) ||
+ sizeof(*st) + le16_to_cpu(st->reallocationTableLen) >
+ sb->s_blocksize) {
+ brelse(bh);
+ continue;
+ }
+
+ sdata->s_spar_map[i] = bh;
+ }
+ map->s_partition_func = udf_get_pblock_spar15;
return 0;
}
-static int udf_load_logicalvol(struct super_block *sb, struct buffer_head *bh,
- kernel_lb_addr *fileset)
+static int udf_load_logicalvol(struct super_block *sb, sector_t block,
+ struct kernel_lb_addr *fileset)
{
struct logicalVolDesc *lvd;
- int i, j, offset;
+ int i, offset;
uint8_t type;
struct udf_sb_info *sbi = UDF_SB(sb);
struct genericPartitionMap *gpm;
+ uint16_t ident;
+ struct buffer_head *bh;
+ unsigned int table_len;
+ int ret;
+ bh = udf_read_tagged(sb, block, block, &ident);
+ if (!bh)
+ return -EAGAIN;
+ BUG_ON(ident != TAG_IDENT_LVD);
lvd = (struct logicalVolDesc *)bh->b_data;
+ table_len = le32_to_cpu(lvd->mapTableLength);
+ if (table_len > sb->s_blocksize - sizeof(*lvd)) {
+ udf_err(sb, "error loading logical volume descriptor: "
+ "Partition table too long (%u > %lu)\n", table_len,
+ sb->s_blocksize - sizeof(*lvd));
+ ret = -EIO;
+ goto out_bh;
+ }
- i = udf_sb_alloc_partition_maps(sb, le32_to_cpu(lvd->numPartitionMaps));
- if (i != 0)
- return i;
+ ret = udf_sb_alloc_partition_maps(sb, le32_to_cpu(lvd->numPartitionMaps));
+ if (ret)
+ goto out_bh;
for (i = 0, offset = 0;
- i < sbi->s_partitions && offset < le32_to_cpu(lvd->mapTableLength);
+ i < sbi->s_partitions && offset < table_len;
i++, offset += gpm->partitionMapLength) {
struct udf_part_map *map = &sbi->s_partmaps[i];
gpm = (struct genericPartitionMap *)
@@ -1223,12 +1448,12 @@ static int udf_load_logicalvol(struct super_block *sb, struct buffer_head *bh,
u16 suf =
le16_to_cpu(((__le16 *)upm2->partIdent.
identSuffix)[0]);
- if (suf == 0x0150) {
+ if (suf < 0x0200) {
map->s_partition_type =
UDF_VIRTUAL_MAP15;
map->s_partition_func =
udf_get_pblock_virt15;
- } else if (suf == 0x0200) {
+ } else {
map->s_partition_type =
UDF_VIRTUAL_MAP20;
map->s_partition_func =
@@ -1237,41 +1462,52 @@ static int udf_load_logicalvol(struct super_block *sb, struct buffer_head *bh,
} else if (!strncmp(upm2->partIdent.ident,
UDF_ID_SPARABLE,
strlen(UDF_ID_SPARABLE))) {
- uint32_t loc;
- uint16_t ident;
- struct sparingTable *st;
- struct sparablePartitionMap *spm =
- (struct sparablePartitionMap *)gpm;
-
- map->s_partition_type = UDF_SPARABLE_MAP15;
- map->s_type_specific.s_sparing.s_packet_len =
- le16_to_cpu(spm->packetLength);
- for (j = 0; j < spm->numSparingTables; j++) {
- struct buffer_head *bh2;
-
- loc = le32_to_cpu(
- spm->locSparingTable[j]);
- bh2 = udf_read_tagged(sb, loc, loc,
- &ident);
- map->s_type_specific.s_sparing.
- s_spar_map[j] = bh2;
-
- if (bh2 != NULL) {
- st = (struct sparingTable *)
- bh2->b_data;
- if (ident != 0 || strncmp(
- st->sparingIdent.ident,
- UDF_ID_SPARING,
- strlen(UDF_ID_SPARING))) {
- brelse(bh2);
- map->s_type_specific.
- s_sparing.
- s_spar_map[j] =
- NULL;
- }
- }
- }
- map->s_partition_func = udf_get_pblock_spar15;
+ ret = udf_load_sparable_map(sb, map,
+ (struct sparablePartitionMap *)gpm);
+ if (ret < 0)
+ goto out_bh;
+ } else if (!strncmp(upm2->partIdent.ident,
+ UDF_ID_METADATA,
+ strlen(UDF_ID_METADATA))) {
+ struct udf_meta_data *mdata =
+ &map->s_type_specific.s_metadata;
+ struct metadataPartitionMap *mdm =
+ (struct metadataPartitionMap *)
+ &(lvd->partitionMaps[offset]);
+ udf_debug("Parsing Logical vol part %d type %d id=%s\n",
+ i, type, UDF_ID_METADATA);
+
+ map->s_partition_type = UDF_METADATA_MAP25;
+ map->s_partition_func = udf_get_pblock_meta25;
+
+ mdata->s_meta_file_loc =
+ le32_to_cpu(mdm->metadataFileLoc);
+ mdata->s_mirror_file_loc =
+ le32_to_cpu(mdm->metadataMirrorFileLoc);
+ mdata->s_bitmap_file_loc =
+ le32_to_cpu(mdm->metadataBitmapFileLoc);
+ mdata->s_alloc_unit_size =
+ le32_to_cpu(mdm->allocUnitSize);
+ mdata->s_align_unit_size =
+ le16_to_cpu(mdm->alignUnitSize);
+ if (mdm->flags & 0x01)
+ mdata->s_flags |= MF_DUPLICATE_MD;
+
+ udf_debug("Metadata Ident suffix=0x%x\n",
+ le16_to_cpu(*(__le16 *)
+ mdm->partIdent.identSuffix));
+ udf_debug("Metadata part num=%d\n",
+ le16_to_cpu(mdm->partitionNum));
+ udf_debug("Metadata part alloc unit size=%d\n",
+ le32_to_cpu(mdm->allocUnitSize));
+ udf_debug("Metadata file loc=%d\n",
+ le32_to_cpu(mdm->metadataFileLoc));
+ udf_debug("Mirror file loc=%d\n",
+ le32_to_cpu(mdm->metadataMirrorFileLoc));
+ udf_debug("Bitmap file loc=%d\n",
+ le32_to_cpu(mdm->metadataBitmapFileLoc));
+ udf_debug("Flags: %d %d\n",
+ mdata->s_flags, mdm->flags);
} else {
udf_debug("Unknown ident: %s\n",
upm2->partIdent.ident);
@@ -1281,29 +1517,30 @@ static int udf_load_logicalvol(struct super_block *sb, struct buffer_head *bh,
map->s_partition_num = le16_to_cpu(upm2->partitionNum);
}
udf_debug("Partition (%d:%d) type %d on volume %d\n",
- i, map->s_partition_num, type,
- map->s_volumeseqnum);
+ i, map->s_partition_num, type, map->s_volumeseqnum);
}
if (fileset) {
- long_ad *la = (long_ad *)&(lvd->logicalVolContentsUse[0]);
+ struct long_ad *la = (struct long_ad *)&(lvd->logicalVolContentsUse[0]);
*fileset = lelb_to_cpu(la->extLocation);
- udf_debug("FileSet found in LogicalVolDesc at block=%d, "
- "partition=%d\n", fileset->logicalBlockNum,
+ udf_debug("FileSet found in LogicalVolDesc at block=%d, partition=%d\n",
+ fileset->logicalBlockNum,
fileset->partitionReferenceNum);
}
if (lvd->integritySeqExt.extLength)
udf_load_logicalvolint(sb, leea_to_cpu(lvd->integritySeqExt));
-
- return 0;
+ ret = 0;
+out_bh:
+ brelse(bh);
+ return ret;
}
/*
* udf_load_logicalvolint
*
*/
-static void udf_load_logicalvolint(struct super_block *sb, kernel_extent_ad loc)
+static void udf_load_logicalvolint(struct super_block *sb, struct kernel_extent_ad loc)
{
struct buffer_head *bh = NULL;
uint16_t ident;
@@ -1331,22 +1568,18 @@ static void udf_load_logicalvolint(struct super_block *sb, kernel_extent_ad loc)
}
/*
- * udf_process_sequence
- *
- * PURPOSE
- * Process a main/reserve volume descriptor sequence.
+ * Process a main/reserve volume descriptor sequence.
+ * @block First block of first extent of the sequence.
+ * @lastblock Lastblock of first extent of the sequence.
+ * @fileset There we store extent containing root fileset
*
- * PRE-CONDITIONS
- * sb Pointer to _locked_ superblock.
- * block First block of first extent of the sequence.
- * lastblock Lastblock of first extent of the sequence.
- *
- * HISTORY
- * July 1, 1997 - Andrew E. Mileski
- * Written, tested, and released.
+ * Returns <0 on error, 0 on success. -EAGAIN is special - try next descriptor
+ * sequence
*/
-static int udf_process_sequence(struct super_block *sb, long block,
- long lastblock, kernel_lb_addr *fileset)
+static noinline int udf_process_sequence(
+ struct super_block *sb,
+ sector_t block, sector_t lastblock,
+ struct kernel_lb_addr *fileset)
{
struct buffer_head *bh = NULL;
struct udf_vds_record vds[VDS_POS_LENGTH];
@@ -1354,19 +1587,26 @@ static int udf_process_sequence(struct super_block *sb, long block,
struct generic_desc *gd;
struct volDescPtr *vdp;
int done = 0;
- int i, j;
uint32_t vdsn;
uint16_t ident;
long next_s = 0, next_e = 0;
+ int ret;
memset(vds, 0, sizeof(struct udf_vds_record) * VDS_POS_LENGTH);
- /* Read the main descriptor sequence */
+ /*
+ * Read the main descriptor sequence and find which descriptors
+ * are in it.
+ */
for (; (!done && block <= lastblock); block++) {
bh = udf_read_tagged(sb, block, block, &ident);
- if (!bh)
- break;
+ if (!bh) {
+ udf_err(sb,
+ "Block %llu of volume descriptor sequence is corrupted or we could not read it\n",
+ (unsigned long long)block);
+ return -EAGAIN;
+ }
/* Process each descriptor (ISO 13346 3/8.3-8.4) */
gd = (struct generic_desc *)bh->b_data;
@@ -1432,40 +1672,37 @@ static int udf_process_sequence(struct super_block *sb, long block,
}
brelse(bh);
}
- for (i = 0; i < VDS_POS_LENGTH; i++) {
- if (vds[i].block) {
- bh = udf_read_tagged(sb, vds[i].block, vds[i].block,
- &ident);
+ /*
+ * Now read interesting descriptors again and process them
+ * in a suitable order
+ */
+ if (!vds[VDS_POS_PRIMARY_VOL_DESC].block) {
+ udf_err(sb, "Primary Volume Descriptor not found!\n");
+ return -EAGAIN;
+ }
+ ret = udf_load_pvoldesc(sb, vds[VDS_POS_PRIMARY_VOL_DESC].block);
+ if (ret < 0)
+ return ret;
+
+ if (vds[VDS_POS_LOGICAL_VOL_DESC].block) {
+ ret = udf_load_logicalvol(sb,
+ vds[VDS_POS_LOGICAL_VOL_DESC].block,
+ fileset);
+ if (ret < 0)
+ return ret;
+ }
- if (i == VDS_POS_PRIMARY_VOL_DESC) {
- udf_load_pvoldesc(sb, bh);
- } else if (i == VDS_POS_LOGICAL_VOL_DESC) {
- if (udf_load_logicalvol(sb, bh, fileset)) {
- brelse(bh);
- return 1;
- }
- } else if (i == VDS_POS_PARTITION_DESC) {
- struct buffer_head *bh2 = NULL;
- if (udf_load_partdesc(sb, bh)) {
- brelse(bh);
- return 1;
- }
- for (j = vds[i].block + 1;
- j < vds[VDS_POS_TERMINATING_DESC].block;
- j++) {
- bh2 = udf_read_tagged(sb, j, j, &ident);
- gd = (struct generic_desc *)bh2->b_data;
- if (ident == TAG_IDENT_PD)
- if (udf_load_partdesc(sb,
- bh2)) {
- brelse(bh);
- brelse(bh2);
- return 1;
- }
- brelse(bh2);
- }
- }
- brelse(bh);
+ if (vds[VDS_POS_PARTITION_DESC].block) {
+ /*
+ * We rescan the whole descriptor sequence to find
+ * partition descriptor blocks and process them.
+ */
+ for (block = vds[VDS_POS_PARTITION_DESC].block;
+ block < vds[VDS_POS_TERMINATING_DESC].block;
+ block++) {
+ ret = udf_load_partdesc(sb, block);
+ if (ret < 0)
+ return ret;
}
}
@@ -1473,155 +1710,233 @@ static int udf_process_sequence(struct super_block *sb, long block,
}
/*
- * udf_check_valid()
+ * Load Volume Descriptor Sequence described by anchor in bh
+ *
+ * Returns <0 on error, 0 on success
*/
-static int udf_check_valid(struct super_block *sb, int novrs, int silent)
+static int udf_load_sequence(struct super_block *sb, struct buffer_head *bh,
+ struct kernel_lb_addr *fileset)
{
- long block;
-
- if (novrs) {
- udf_debug("Validity check skipped because of novrs option\n");
- return 0;
- }
- /* Check that it is NSR02 compliant */
- /* Process any "CD-ROM Volume Descriptor Set" (ECMA 167 2/8.3.1) */
- else {
- block = udf_vrs(sb, silent);
- if (block == -1) {
- struct udf_sb_info *sbi = UDF_SB(sb);
- udf_debug("Failed to read byte 32768. Assuming open "
- "disc. Skipping validity check\n");
- if (!sbi->s_last_block)
- sbi->s_last_block = udf_get_last_block(sb);
- return 0;
- } else
- return !block;
+ struct anchorVolDescPtr *anchor;
+ sector_t main_s, main_e, reserve_s, reserve_e;
+ int ret;
+
+ anchor = (struct anchorVolDescPtr *)bh->b_data;
+
+ /* Locate the main sequence */
+ main_s = le32_to_cpu(anchor->mainVolDescSeqExt.extLocation);
+ main_e = le32_to_cpu(anchor->mainVolDescSeqExt.extLength);
+ main_e = main_e >> sb->s_blocksize_bits;
+ main_e += main_s;
+
+ /* Locate the reserve sequence */
+ reserve_s = le32_to_cpu(anchor->reserveVolDescSeqExt.extLocation);
+ reserve_e = le32_to_cpu(anchor->reserveVolDescSeqExt.extLength);
+ reserve_e = reserve_e >> sb->s_blocksize_bits;
+ reserve_e += reserve_s;
+
+ /* Process the main & reserve sequences */
+ /* responsible for finding the PartitionDesc(s) */
+ ret = udf_process_sequence(sb, main_s, main_e, fileset);
+ if (ret != -EAGAIN)
+ return ret;
+ udf_sb_free_partitions(sb);
+ ret = udf_process_sequence(sb, reserve_s, reserve_e, fileset);
+ if (ret < 0) {
+ udf_sb_free_partitions(sb);
+ /* No sequence was OK, return -EIO */
+ if (ret == -EAGAIN)
+ ret = -EIO;
}
+ return ret;
}
-static int udf_load_partition(struct super_block *sb, kernel_lb_addr *fileset)
+/*
+ * Check whether there is an anchor block in the given block and
+ * load Volume Descriptor Sequence if so.
+ *
+ * Returns <0 on error, 0 on success, -EAGAIN is special - try next anchor
+ * block
+ */
+static int udf_check_anchor_block(struct super_block *sb, sector_t block,
+ struct kernel_lb_addr *fileset)
{
- struct anchorVolDescPtr *anchor;
- uint16_t ident;
struct buffer_head *bh;
- long main_s, main_e, reserve_s, reserve_e;
- int i, j;
- struct udf_sb_info *sbi;
+ uint16_t ident;
+ int ret;
- if (!sb)
- return 1;
- sbi = UDF_SB(sb);
+ if (UDF_QUERY_FLAG(sb, UDF_FLAG_VARCONV) &&
+ udf_fixed_to_variable(block) >=
+ sb->s_bdev->bd_inode->i_size >> sb->s_blocksize_bits)
+ return -EAGAIN;
+
+ bh = udf_read_tagged(sb, block, block, &ident);
+ if (!bh)
+ return -EAGAIN;
+ if (ident != TAG_IDENT_AVDP) {
+ brelse(bh);
+ return -EAGAIN;
+ }
+ ret = udf_load_sequence(sb, bh, fileset);
+ brelse(bh);
+ return ret;
+}
- for (i = 0; i < ARRAY_SIZE(sbi->s_anchor); i++) {
- if (!sbi->s_anchor[i])
+/*
+ * Search for an anchor volume descriptor pointer.
+ *
+ * Returns < 0 on error, 0 on success. -EAGAIN is special - try next set
+ * of anchors.
+ */
+static int udf_scan_anchors(struct super_block *sb, sector_t *lastblock,
+ struct kernel_lb_addr *fileset)
+{
+ sector_t last[6];
+ int i;
+ struct udf_sb_info *sbi = UDF_SB(sb);
+ int last_count = 0;
+ int ret;
+
+ /* First try user provided anchor */
+ if (sbi->s_anchor) {
+ ret = udf_check_anchor_block(sb, sbi->s_anchor, fileset);
+ if (ret != -EAGAIN)
+ return ret;
+ }
+ /*
+ * according to spec, anchor is in either:
+ * block 256
+ * lastblock-256
+ * lastblock
+ * however, if the disc isn't closed, it could be 512.
+ */
+ ret = udf_check_anchor_block(sb, sbi->s_session + 256, fileset);
+ if (ret != -EAGAIN)
+ return ret;
+ /*
+ * The trouble is which block is the last one. Drives often misreport
+ * this so we try various possibilities.
+ */
+ last[last_count++] = *lastblock;
+ if (*lastblock >= 1)
+ last[last_count++] = *lastblock - 1;
+ last[last_count++] = *lastblock + 1;
+ if (*lastblock >= 2)
+ last[last_count++] = *lastblock - 2;
+ if (*lastblock >= 150)
+ last[last_count++] = *lastblock - 150;
+ if (*lastblock >= 152)
+ last[last_count++] = *lastblock - 152;
+
+ for (i = 0; i < last_count; i++) {
+ if (last[i] >= sb->s_bdev->bd_inode->i_size >>
+ sb->s_blocksize_bits)
continue;
- bh = udf_read_tagged(sb, sbi->s_anchor[i], sbi->s_anchor[i],
- &ident);
- if (!bh)
+ ret = udf_check_anchor_block(sb, last[i], fileset);
+ if (ret != -EAGAIN) {
+ if (!ret)
+ *lastblock = last[i];
+ return ret;
+ }
+ if (last[i] < 256)
continue;
+ ret = udf_check_anchor_block(sb, last[i] - 256, fileset);
+ if (ret != -EAGAIN) {
+ if (!ret)
+ *lastblock = last[i];
+ return ret;
+ }
+ }
- anchor = (struct anchorVolDescPtr *)bh->b_data;
-
- /* Locate the main sequence */
- main_s = le32_to_cpu(anchor->mainVolDescSeqExt.extLocation);
- main_e = le32_to_cpu(anchor->mainVolDescSeqExt.extLength);
- main_e = main_e >> sb->s_blocksize_bits;
- main_e += main_s;
+ /* Finally try block 512 in case media is open */
+ return udf_check_anchor_block(sb, sbi->s_session + 512, fileset);
+}
- /* Locate the reserve sequence */
- reserve_s = le32_to_cpu(
- anchor->reserveVolDescSeqExt.extLocation);
- reserve_e = le32_to_cpu(
- anchor->reserveVolDescSeqExt.extLength);
- reserve_e = reserve_e >> sb->s_blocksize_bits;
- reserve_e += reserve_s;
+/*
+ * Find an anchor volume descriptor and load Volume Descriptor Sequence from
+ * area specified by it. The function expects sbi->s_lastblock to be the last
+ * block on the media.
+ *
+ * Return <0 on error, 0 if anchor found. -EAGAIN is special meaning anchor
+ * was not found.
+ */
+static int udf_find_anchor(struct super_block *sb,
+ struct kernel_lb_addr *fileset)
+{
+ struct udf_sb_info *sbi = UDF_SB(sb);
+ sector_t lastblock = sbi->s_last_block;
+ int ret;
- brelse(bh);
+ ret = udf_scan_anchors(sb, &lastblock, fileset);
+ if (ret != -EAGAIN)
+ goto out;
- /* Process the main & reserve sequences */
- /* responsible for finding the PartitionDesc(s) */
- if (!(udf_process_sequence(sb, main_s, main_e,
- fileset) &&
- udf_process_sequence(sb, reserve_s, reserve_e,
- fileset)))
- break;
- }
+ /* No anchor found? Try VARCONV conversion of block numbers */
+ UDF_SET_FLAG(sb, UDF_FLAG_VARCONV);
+ lastblock = udf_variable_to_fixed(sbi->s_last_block);
+ /* Firstly, we try to not convert number of the last block */
+ ret = udf_scan_anchors(sb, &lastblock, fileset);
+ if (ret != -EAGAIN)
+ goto out;
- if (i == ARRAY_SIZE(sbi->s_anchor)) {
- udf_debug("No Anchor block found\n");
- return 1;
+ lastblock = sbi->s_last_block;
+ /* Secondly, we try with converted number of the last block */
+ ret = udf_scan_anchors(sb, &lastblock, fileset);
+ if (ret < 0) {
+ /* VARCONV didn't help. Clear it. */
+ UDF_CLEAR_FLAG(sb, UDF_FLAG_VARCONV);
}
- udf_debug("Using anchor in block %d\n", sbi->s_anchor[i]);
-
- for (i = 0; i < sbi->s_partitions; i++) {
- kernel_lb_addr uninitialized_var(ino);
- struct udf_part_map *map = &sbi->s_partmaps[i];
- switch (map->s_partition_type) {
- case UDF_VIRTUAL_MAP15:
- case UDF_VIRTUAL_MAP20:
- if (!sbi->s_last_block) {
- sbi->s_last_block = udf_get_last_block(sb);
- udf_find_anchor(sb);
- }
-
- if (!sbi->s_last_block) {
- udf_debug("Unable to determine Lastblock (For "
- "Virtual Partition)\n");
- return 1;
- }
+out:
+ if (ret == 0)
+ sbi->s_last_block = lastblock;
+ return ret;
+}
- for (j = 0; j < sbi->s_partitions; j++) {
- struct udf_part_map *map2 = &sbi->s_partmaps[j];
- if (j != i &&
- map->s_volumeseqnum ==
- map2->s_volumeseqnum &&
- map->s_partition_num ==
- map2->s_partition_num) {
- ino.partitionReferenceNum = j;
- ino.logicalBlockNum =
- sbi->s_last_block -
- map2->s_partition_root;
- break;
- }
- }
+/*
+ * Check Volume Structure Descriptor, find Anchor block and load Volume
+ * Descriptor Sequence.
+ *
+ * Returns < 0 on error, 0 on success. -EAGAIN is special meaning anchor
+ * block was not found.
+ */
+static int udf_load_vrs(struct super_block *sb, struct udf_options *uopt,
+ int silent, struct kernel_lb_addr *fileset)
+{
+ struct udf_sb_info *sbi = UDF_SB(sb);
+ loff_t nsr_off;
+ int ret;
- if (j == sbi->s_partitions)
- return 1;
-
- sbi->s_vat_inode = udf_iget(sb, ino);
- if (!sbi->s_vat_inode)
- return 1;
-
- if (map->s_partition_type == UDF_VIRTUAL_MAP15) {
- map->s_type_specific.s_virtual.s_start_offset =
- udf_ext0_offset(sbi->s_vat_inode);
- map->s_type_specific.s_virtual.s_num_entries =
- (sbi->s_vat_inode->i_size - 36) >> 2;
- } else if (map->s_partition_type == UDF_VIRTUAL_MAP20) {
- uint32_t pos;
- struct virtualAllocationTable20 *vat20;
-
- pos = udf_block_map(sbi->s_vat_inode, 0);
- bh = sb_bread(sb, pos);
- if (!bh)
- return 1;
- vat20 = (struct virtualAllocationTable20 *)
- bh->b_data +
- udf_ext0_offset(sbi->s_vat_inode);
- map->s_type_specific.s_virtual.s_start_offset =
- le16_to_cpu(vat20->lengthHeader) +
- udf_ext0_offset(sbi->s_vat_inode);
- map->s_type_specific.s_virtual.s_num_entries =
- (sbi->s_vat_inode->i_size -
- map->s_type_specific.s_virtual.
- s_start_offset) >> 2;
- brelse(bh);
- }
- map->s_partition_root = udf_get_pblock(sb, 0, i, 0);
- map->s_partition_len =
- sbi->s_partmaps[ino.partitionReferenceNum].
- s_partition_len;
+ if (!sb_set_blocksize(sb, uopt->blocksize)) {
+ if (!silent)
+ udf_warn(sb, "Bad block size\n");
+ return -EINVAL;
+ }
+ sbi->s_last_block = uopt->lastblock;
+ if (!uopt->novrs) {
+ /* Check that it is NSR02 compliant */
+ nsr_off = udf_check_vsd(sb);
+ if (!nsr_off) {
+ if (!silent)
+ udf_warn(sb, "No VRS found\n");
+ return 0;
}
+ if (nsr_off == -1)
+ udf_debug("Failed to read sector at offset %d. "
+ "Assuming open disc. Skipping validity "
+ "check\n", VSD_FIRST_SECTOR_OFFSET);
+ if (!sbi->s_last_block)
+ sbi->s_last_block = udf_get_last_block(sb);
+ } else {
+ udf_debug("Validity check skipped because of novrs option\n");
+ }
+
+ /* Look for anchor block and load Volume Descriptor Sequence */
+ sbi->s_anchor = uopt->anchor;
+ ret = udf_find_anchor(sb, fileset);
+ if (ret < 0) {
+ if (!silent && ret == -EAGAIN)
+ udf_warn(sb, "No anchor found\n");
+ return ret;
}
return 0;
}
@@ -1630,112 +1945,120 @@ static void udf_open_lvid(struct super_block *sb)
{
struct udf_sb_info *sbi = UDF_SB(sb);
struct buffer_head *bh = sbi->s_lvid_bh;
- if (bh) {
- kernel_timestamp cpu_time;
- struct logicalVolIntegrityDesc *lvid =
- (struct logicalVolIntegrityDesc *)bh->b_data;
- struct logicalVolIntegrityDescImpUse *lvidiu =
- udf_sb_lvidiu(sbi);
-
- lvidiu->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX;
- lvidiu->impIdent.identSuffix[1] = UDF_OS_ID_LINUX;
- if (udf_time_to_stamp(&cpu_time, CURRENT_TIME))
- lvid->recordingDateAndTime = cpu_to_lets(cpu_time);
- lvid->integrityType = LVID_INTEGRITY_TYPE_OPEN;
+ struct logicalVolIntegrityDesc *lvid;
+ struct logicalVolIntegrityDescImpUse *lvidiu;
- lvid->descTag.descCRC = cpu_to_le16(
- udf_crc((char *)lvid + sizeof(tag),
- le16_to_cpu(lvid->descTag.descCRCLength),
- 0));
+ if (!bh)
+ return;
+ lvid = (struct logicalVolIntegrityDesc *)bh->b_data;
+ lvidiu = udf_sb_lvidiu(sb);
+ if (!lvidiu)
+ return;
- lvid->descTag.tagChecksum = udf_tag_checksum(&lvid->descTag);
- mark_buffer_dirty(bh);
- }
+ mutex_lock(&sbi->s_alloc_mutex);
+ lvidiu->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX;
+ lvidiu->impIdent.identSuffix[1] = UDF_OS_ID_LINUX;
+ udf_time_to_disk_stamp(&lvid->recordingDateAndTime,
+ CURRENT_TIME);
+ lvid->integrityType = cpu_to_le32(LVID_INTEGRITY_TYPE_OPEN);
+
+ lvid->descTag.descCRC = cpu_to_le16(
+ crc_itu_t(0, (char *)lvid + sizeof(struct tag),
+ le16_to_cpu(lvid->descTag.descCRCLength)));
+
+ lvid->descTag.tagChecksum = udf_tag_checksum(&lvid->descTag);
+ mark_buffer_dirty(bh);
+ sbi->s_lvid_dirty = 0;
+ mutex_unlock(&sbi->s_alloc_mutex);
+ /* Make opening of filesystem visible on the media immediately */
+ sync_dirty_buffer(bh);
}
static void udf_close_lvid(struct super_block *sb)
{
- kernel_timestamp cpu_time;
struct udf_sb_info *sbi = UDF_SB(sb);
struct buffer_head *bh = sbi->s_lvid_bh;
struct logicalVolIntegrityDesc *lvid;
+ struct logicalVolIntegrityDescImpUse *lvidiu;
if (!bh)
return;
-
lvid = (struct logicalVolIntegrityDesc *)bh->b_data;
+ lvidiu = udf_sb_lvidiu(sb);
+ if (!lvidiu)
+ return;
- if (lvid->integrityType == LVID_INTEGRITY_TYPE_OPEN) {
- struct logicalVolIntegrityDescImpUse *lvidiu =
- udf_sb_lvidiu(sbi);
- lvidiu->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX;
- lvidiu->impIdent.identSuffix[1] = UDF_OS_ID_LINUX;
- if (udf_time_to_stamp(&cpu_time, CURRENT_TIME))
- lvid->recordingDateAndTime = cpu_to_lets(cpu_time);
- if (UDF_MAX_WRITE_VERSION > le16_to_cpu(lvidiu->maxUDFWriteRev))
- lvidiu->maxUDFWriteRev =
- cpu_to_le16(UDF_MAX_WRITE_VERSION);
- if (sbi->s_udfrev > le16_to_cpu(lvidiu->minUDFReadRev))
- lvidiu->minUDFReadRev = cpu_to_le16(sbi->s_udfrev);
- if (sbi->s_udfrev > le16_to_cpu(lvidiu->minUDFWriteRev))
- lvidiu->minUDFWriteRev = cpu_to_le16(sbi->s_udfrev);
- lvid->integrityType = cpu_to_le32(LVID_INTEGRITY_TYPE_CLOSE);
-
- lvid->descTag.descCRC = cpu_to_le16(
- udf_crc((char *)lvid + sizeof(tag),
- le16_to_cpu(lvid->descTag.descCRCLength),
- 0));
-
- lvid->descTag.tagChecksum = udf_tag_checksum(&lvid->descTag);
- mark_buffer_dirty(bh);
- }
+ mutex_lock(&sbi->s_alloc_mutex);
+ lvidiu->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX;
+ lvidiu->impIdent.identSuffix[1] = UDF_OS_ID_LINUX;
+ udf_time_to_disk_stamp(&lvid->recordingDateAndTime, CURRENT_TIME);
+ if (UDF_MAX_WRITE_VERSION > le16_to_cpu(lvidiu->maxUDFWriteRev))
+ lvidiu->maxUDFWriteRev = cpu_to_le16(UDF_MAX_WRITE_VERSION);
+ if (sbi->s_udfrev > le16_to_cpu(lvidiu->minUDFReadRev))
+ lvidiu->minUDFReadRev = cpu_to_le16(sbi->s_udfrev);
+ if (sbi->s_udfrev > le16_to_cpu(lvidiu->minUDFWriteRev))
+ lvidiu->minUDFWriteRev = cpu_to_le16(sbi->s_udfrev);
+ lvid->integrityType = cpu_to_le32(LVID_INTEGRITY_TYPE_CLOSE);
+
+ lvid->descTag.descCRC = cpu_to_le16(
+ crc_itu_t(0, (char *)lvid + sizeof(struct tag),
+ le16_to_cpu(lvid->descTag.descCRCLength)));
+
+ lvid->descTag.tagChecksum = udf_tag_checksum(&lvid->descTag);
+ /*
+ * We set buffer uptodate unconditionally here to avoid spurious
+ * warnings from mark_buffer_dirty() when previous EIO has marked
+ * the buffer as !uptodate
+ */
+ set_buffer_uptodate(bh);
+ mark_buffer_dirty(bh);
+ sbi->s_lvid_dirty = 0;
+ mutex_unlock(&sbi->s_alloc_mutex);
+ /* Make closing of filesystem visible on the media immediately */
+ sync_dirty_buffer(bh);
}
-static void udf_sb_free_bitmap(struct udf_bitmap *bitmap)
+u64 lvid_get_unique_id(struct super_block *sb)
{
- int i;
- int nr_groups = bitmap->s_nr_groups;
- int size = sizeof(struct udf_bitmap) + (sizeof(struct buffer_head *) *
- nr_groups);
+ struct buffer_head *bh;
+ struct udf_sb_info *sbi = UDF_SB(sb);
+ struct logicalVolIntegrityDesc *lvid;
+ struct logicalVolHeaderDesc *lvhd;
+ u64 uniqueID;
+ u64 ret;
- for (i = 0; i < nr_groups; i++)
- if (bitmap->s_block_bitmap[i])
- brelse(bitmap->s_block_bitmap[i]);
+ bh = sbi->s_lvid_bh;
+ if (!bh)
+ return 0;
- if (size <= PAGE_SIZE)
- kfree(bitmap);
- else
- vfree(bitmap);
+ lvid = (struct logicalVolIntegrityDesc *)bh->b_data;
+ lvhd = (struct logicalVolHeaderDesc *)lvid->logicalVolContentsUse;
+
+ mutex_lock(&sbi->s_alloc_mutex);
+ ret = uniqueID = le64_to_cpu(lvhd->uniqueID);
+ if (!(++uniqueID & 0xFFFFFFFF))
+ uniqueID += 16;
+ lvhd->uniqueID = cpu_to_le64(uniqueID);
+ mutex_unlock(&sbi->s_alloc_mutex);
+ mark_buffer_dirty(bh);
+
+ return ret;
}
-/*
- * udf_read_super
- *
- * PURPOSE
- * Complete the specified super block.
- *
- * PRE-CONDITIONS
- * sb Pointer to superblock to complete - never NULL.
- * sb->s_dev Device to read suberblock from.
- * options Pointer to mount options.
- * silent Silent flag.
- *
- * HISTORY
- * July 1, 1997 - Andrew E. Mileski
- * Written, tested, and released.
- */
static int udf_fill_super(struct super_block *sb, void *options, int silent)
{
- int i;
+ int ret = -EINVAL;
struct inode *inode = NULL;
struct udf_options uopt;
- kernel_lb_addr rootdir, fileset;
+ struct kernel_lb_addr rootdir, fileset;
struct udf_sb_info *sbi;
uopt.flags = (1 << UDF_FLAG_USE_AD_IN_ICB) | (1 << UDF_FLAG_STRICT);
- uopt.uid = -1;
- uopt.gid = -1;
+ uopt.uid = INVALID_UID;
+ uopt.gid = INVALID_GID;
uopt.umask = 0;
+ uopt.fmode = UDF_INVALID_MODE;
+ uopt.dmode = UDF_INVALID_MODE;
sbi = kzalloc(sizeof(struct udf_sb_info), GFP_KERNEL);
if (!sbi)
@@ -1750,8 +2073,7 @@ static int udf_fill_super(struct super_block *sb, void *options, int silent)
if (uopt.flags & (1 << UDF_FLAG_UTF8) &&
uopt.flags & (1 << UDF_FLAG_NLS_MAP)) {
- udf_error(sb, "udf_read_super",
- "utf8 cannot be combined with iocharset\n");
+ udf_err(sb, "utf8 cannot be combined with iocharset\n");
goto error_out;
}
#ifdef CONFIG_UDF_NLS
@@ -1773,11 +2095,10 @@ static int udf_fill_super(struct super_block *sb, void *options, int silent)
sbi->s_uid = uopt.uid;
sbi->s_gid = uopt.gid;
sbi->s_umask = uopt.umask;
+ sbi->s_fmode = uopt.fmode;
+ sbi->s_dmode = uopt.dmode;
sbi->s_nls_map = uopt.nls_map;
-
- /* Set the block size for all transfers */
- if (!udf_set_blocksize(sb, uopt.blocksize))
- goto error_out;
+ rwlock_init(&sbi->s_cred_lock);
if (uopt.session == 0xFFFFFFFF)
sbi->s_session = udf_get_last_session(sb);
@@ -1786,28 +2107,33 @@ static int udf_fill_super(struct super_block *sb, void *options, int silent)
udf_debug("Multi-session=%d\n", sbi->s_session);
- sbi->s_last_block = uopt.lastblock;
- sbi->s_anchor[0] = sbi->s_anchor[1] = 0;
- sbi->s_anchor[2] = uopt.anchor;
- sbi->s_anchor[3] = 256;
-
- if (udf_check_valid(sb, uopt.novrs, silent)) {
- /* read volume recognition sequences */
- printk(KERN_WARNING "UDF-fs: No VRS found\n");
- goto error_out;
- }
-
- udf_find_anchor(sb);
-
/* Fill in the rest of the superblock */
sb->s_op = &udf_sb_ops;
- sb->dq_op = NULL;
- sb->s_dirt = 0;
+ sb->s_export_op = &udf_export_ops;
+
sb->s_magic = UDF_SUPER_MAGIC;
sb->s_time_gran = 1000;
- if (udf_load_partition(sb, &fileset)) {
- printk(KERN_WARNING "UDF-fs: No partition found (1)\n");
+ if (uopt.flags & (1 << UDF_FLAG_BLOCKSIZE_SET)) {
+ ret = udf_load_vrs(sb, &uopt, silent, &fileset);
+ } else {
+ uopt.blocksize = bdev_logical_block_size(sb->s_bdev);
+ ret = udf_load_vrs(sb, &uopt, silent, &fileset);
+ if (ret == -EAGAIN && uopt.blocksize != UDF_DEFAULT_BLOCKSIZE) {
+ if (!silent)
+ pr_notice("Rescanning with blocksize %d\n",
+ UDF_DEFAULT_BLOCKSIZE);
+ brelse(sbi->s_lvid_bh);
+ sbi->s_lvid_bh = NULL;
+ uopt.blocksize = UDF_DEFAULT_BLOCKSIZE;
+ ret = udf_load_vrs(sb, &uopt, silent, &fileset);
+ }
+ }
+ if (ret < 0) {
+ if (ret == -EAGAIN) {
+ udf_warn(sb, "No partition found (1)\n");
+ ret = -EINVAL;
+ }
goto error_out;
}
@@ -1815,20 +2141,27 @@ static int udf_fill_super(struct super_block *sb, void *options, int silent)
if (sbi->s_lvid_bh) {
struct logicalVolIntegrityDescImpUse *lvidiu =
- udf_sb_lvidiu(sbi);
- uint16_t minUDFReadRev = le16_to_cpu(lvidiu->minUDFReadRev);
- uint16_t minUDFWriteRev = le16_to_cpu(lvidiu->minUDFWriteRev);
- /* uint16_t maxUDFWriteRev =
- le16_to_cpu(lvidiu->maxUDFWriteRev); */
+ udf_sb_lvidiu(sb);
+ uint16_t minUDFReadRev;
+ uint16_t minUDFWriteRev;
+ if (!lvidiu) {
+ ret = -EINVAL;
+ goto error_out;
+ }
+ minUDFReadRev = le16_to_cpu(lvidiu->minUDFReadRev);
+ minUDFWriteRev = le16_to_cpu(lvidiu->minUDFWriteRev);
if (minUDFReadRev > UDF_MAX_READ_VERSION) {
- printk(KERN_ERR "UDF-fs: minUDFReadRev=%x "
- "(max is %x)\n",
- le16_to_cpu(lvidiu->minUDFReadRev),
- UDF_MAX_READ_VERSION);
+ udf_err(sb, "minUDFReadRev=%x (max is %x)\n",
+ minUDFReadRev,
+ UDF_MAX_READ_VERSION);
+ ret = -EINVAL;
+ goto error_out;
+ } else if (minUDFWriteRev > UDF_MAX_WRITE_VERSION &&
+ !(sb->s_flags & MS_RDONLY)) {
+ ret = -EACCES;
goto error_out;
- } else if (minUDFWriteRev > UDF_MAX_WRITE_VERSION)
- sb->s_flags |= MS_RDONLY;
+ }
sbi->s_udfrev = minUDFWriteRev;
@@ -1839,29 +2172,31 @@ static int udf_fill_super(struct super_block *sb, void *options, int silent)
}
if (!sbi->s_partitions) {
- printk(KERN_WARNING "UDF-fs: No partition found (2)\n");
+ udf_warn(sb, "No partition found (2)\n");
+ ret = -EINVAL;
goto error_out;
}
if (sbi->s_partmaps[sbi->s_partition].s_partition_flags &
- UDF_PART_FLAG_READ_ONLY) {
- printk(KERN_NOTICE "UDF-fs: Partition marked readonly; "
- "forcing readonly mount\n");
- sb->s_flags |= MS_RDONLY;
+ UDF_PART_FLAG_READ_ONLY &&
+ !(sb->s_flags & MS_RDONLY)) {
+ ret = -EACCES;
+ goto error_out;
}
if (udf_find_fileset(sb, &fileset, &rootdir)) {
- printk(KERN_WARNING "UDF-fs: No fileset found\n");
+ udf_warn(sb, "No fileset found\n");
+ ret = -EINVAL;
goto error_out;
}
if (!silent) {
- kernel_timestamp ts;
- udf_time_to_stamp(&ts, sbi->s_record_time);
- udf_info("UDF: Mounting volume '%s', "
- "timestamp %04u/%02u/%02u %02u:%02u (%x)\n",
- sbi->s_volume_ident, ts.year, ts.month, ts.day,
- ts.hour, ts.minute, ts.typeAndTimezone);
+ struct timestamp ts;
+ udf_time_to_disk_stamp(&ts, sbi->s_record_time);
+ udf_info("Mounting volume '%s', timestamp %04u/%02u/%02u %02u:%02u (%x)\n",
+ sbi->s_volume_ident,
+ le16_to_cpu(ts.year), ts.month, ts.day,
+ ts.hour, ts.minute, le16_to_cpu(ts.typeAndTimezone));
}
if (!(sb->s_flags & MS_RDONLY))
udf_open_lvid(sb);
@@ -1869,42 +2204,28 @@ static int udf_fill_super(struct super_block *sb, void *options, int silent)
/* Assign the root inode */
/* assign inodes by physical block number */
/* perhaps it's not extensible enough, but for now ... */
- inode = udf_iget(sb, rootdir);
+ inode = udf_iget(sb, &rootdir);
if (!inode) {
- printk(KERN_ERR "UDF-fs: Error in udf_iget, block=%d, "
- "partition=%d\n",
+ udf_err(sb, "Error in udf_iget, block=%d, partition=%d\n",
rootdir.logicalBlockNum, rootdir.partitionReferenceNum);
+ ret = -EIO;
goto error_out;
}
/* Allocate a dentry for the root inode */
- sb->s_root = d_alloc_root(inode);
+ sb->s_root = d_make_root(inode);
if (!sb->s_root) {
- printk(KERN_ERR "UDF-fs: Couldn't allocate root dentry\n");
- iput(inode);
+ udf_err(sb, "Couldn't allocate root dentry\n");
+ ret = -ENOMEM;
goto error_out;
}
sb->s_maxbytes = MAX_LFS_FILESIZE;
+ sb->s_max_links = UDF_MAX_LINKS;
return 0;
error_out:
if (sbi->s_vat_inode)
iput(sbi->s_vat_inode);
- if (sbi->s_partitions) {
- struct udf_part_map *map = &sbi->s_partmaps[sbi->s_partition];
- if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_TABLE)
- iput(map->s_uspace.s_table);
- if (map->s_partition_flags & UDF_PART_FLAG_FREED_TABLE)
- iput(map->s_fspace.s_table);
- if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_BITMAP)
- udf_sb_free_bitmap(map->s_uspace.s_bitmap);
- if (map->s_partition_flags & UDF_PART_FLAG_FREED_BITMAP)
- udf_sb_free_bitmap(map->s_fspace.s_bitmap);
- if (map->s_partition_type == UDF_SPARABLE_MAP15)
- for (i = 0; i < 4; i++)
- brelse(map->s_type_specific.s_sparing.
- s_spar_map[i]);
- }
#ifdef CONFIG_UDF_NLS
if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP))
unload_nls(sbi->s_nls_map);
@@ -1912,78 +2233,53 @@ error_out:
if (!(sb->s_flags & MS_RDONLY))
udf_close_lvid(sb);
brelse(sbi->s_lvid_bh);
-
- kfree(sbi->s_partmaps);
+ udf_sb_free_partitions(sb);
kfree(sbi);
sb->s_fs_info = NULL;
- return -EINVAL;
+ return ret;
}
-void udf_error(struct super_block *sb, const char *function,
- const char *fmt, ...)
+void _udf_err(struct super_block *sb, const char *function,
+ const char *fmt, ...)
{
+ struct va_format vaf;
va_list args;
- if (!(sb->s_flags & MS_RDONLY)) {
- /* mark sb error */
- sb->s_dirt = 1;
- }
va_start(args, fmt);
- vsnprintf(error_buf, sizeof(error_buf), fmt, args);
+
+ vaf.fmt = fmt;
+ vaf.va = &args;
+
+ pr_err("error (device %s): %s: %pV", sb->s_id, function, &vaf);
+
va_end(args);
- printk(KERN_CRIT "UDF-fs error (device %s): %s: %s\n",
- sb->s_id, function, error_buf);
}
-void udf_warning(struct super_block *sb, const char *function,
- const char *fmt, ...)
+void _udf_warn(struct super_block *sb, const char *function,
+ const char *fmt, ...)
{
+ struct va_format vaf;
va_list args;
va_start(args, fmt);
- vsnprintf(error_buf, sizeof(error_buf), fmt, args);
+
+ vaf.fmt = fmt;
+ vaf.va = &args;
+
+ pr_warn("warning (device %s): %s: %pV", sb->s_id, function, &vaf);
+
va_end(args);
- printk(KERN_WARNING "UDF-fs warning (device %s): %s: %s\n",
- sb->s_id, function, error_buf);
}
-/*
- * udf_put_super
- *
- * PURPOSE
- * Prepare for destruction of the superblock.
- *
- * DESCRIPTION
- * Called before the filesystem is unmounted.
- *
- * HISTORY
- * July 1, 1997 - Andrew E. Mileski
- * Written, tested, and released.
- */
static void udf_put_super(struct super_block *sb)
{
- int i;
struct udf_sb_info *sbi;
sbi = UDF_SB(sb);
+
if (sbi->s_vat_inode)
iput(sbi->s_vat_inode);
- if (sbi->s_partitions) {
- struct udf_part_map *map = &sbi->s_partmaps[sbi->s_partition];
- if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_TABLE)
- iput(map->s_uspace.s_table);
- if (map->s_partition_flags & UDF_PART_FLAG_FREED_TABLE)
- iput(map->s_fspace.s_table);
- if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_BITMAP)
- udf_sb_free_bitmap(map->s_uspace.s_bitmap);
- if (map->s_partition_flags & UDF_PART_FLAG_FREED_BITMAP)
- udf_sb_free_bitmap(map->s_fspace.s_bitmap);
- if (map->s_partition_type == UDF_SPARABLE_MAP15)
- for (i = 0; i < 4; i++)
- brelse(map->s_type_specific.s_sparing.
- s_spar_map[i]);
- }
#ifdef CONFIG_UDF_NLS
if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP))
unload_nls(sbi->s_nls_map);
@@ -1991,35 +2287,37 @@ static void udf_put_super(struct super_block *sb)
if (!(sb->s_flags & MS_RDONLY))
udf_close_lvid(sb);
brelse(sbi->s_lvid_bh);
- kfree(sbi->s_partmaps);
+ udf_sb_free_partitions(sb);
kfree(sb->s_fs_info);
sb->s_fs_info = NULL;
}
-/*
- * udf_stat_fs
- *
- * PURPOSE
- * Return info about the filesystem.
- *
- * DESCRIPTION
- * Called by sys_statfs()
- *
- * HISTORY
- * July 1, 1997 - Andrew E. Mileski
- * Written, tested, and released.
- */
+static int udf_sync_fs(struct super_block *sb, int wait)
+{
+ struct udf_sb_info *sbi = UDF_SB(sb);
+
+ mutex_lock(&sbi->s_alloc_mutex);
+ if (sbi->s_lvid_dirty) {
+ /*
+ * Blockdevice will be synced later so we don't have to submit
+ * the buffer for IO
+ */
+ mark_buffer_dirty(sbi->s_lvid_bh);
+ sbi->s_lvid_dirty = 0;
+ }
+ mutex_unlock(&sbi->s_alloc_mutex);
+
+ return 0;
+}
+
static int udf_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct super_block *sb = dentry->d_sb;
struct udf_sb_info *sbi = UDF_SB(sb);
struct logicalVolIntegrityDescImpUse *lvidiu;
+ u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
- if (sbi->s_lvid_bh != NULL)
- lvidiu = udf_sb_lvidiu(sbi);
- else
- lvidiu = NULL;
-
+ lvidiu = udf_sb_lvidiu(sb);
buf->f_type = UDF_SUPER_MAGIC;
buf->f_bsize = sb->s_blocksize;
buf->f_blocks = sbi->s_partmaps[sbi->s_partition].s_partition_len;
@@ -2029,16 +2327,13 @@ static int udf_statfs(struct dentry *dentry, struct kstatfs *buf)
le32_to_cpu(lvidiu->numDirs)) : 0)
+ buf->f_bfree;
buf->f_ffree = buf->f_bfree;
- /* __kernel_fsid_t f_fsid */
buf->f_namelen = UDF_NAME_LEN - 2;
+ buf->f_fsid.val[0] = (u32)id;
+ buf->f_fsid.val[1] = (u32)(id >> 32);
return 0;
}
-static unsigned char udf_bitmap_lookup[16] = {
- 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4
-};
-
static unsigned int udf_count_free_bitmap(struct super_block *sb,
struct udf_bitmap *bitmap)
{
@@ -2046,25 +2341,22 @@ static unsigned int udf_count_free_bitmap(struct super_block *sb,
unsigned int accum = 0;
int index;
int block = 0, newblock;
- kernel_lb_addr loc;
+ struct kernel_lb_addr loc;
uint32_t bytes;
- uint8_t value;
uint8_t *ptr;
uint16_t ident;
struct spaceBitmapDesc *bm;
- lock_kernel();
-
loc.logicalBlockNum = bitmap->s_extPosition;
loc.partitionReferenceNum = UDF_SB(sb)->s_partition;
- bh = udf_read_ptagged(sb, loc, 0, &ident);
+ bh = udf_read_ptagged(sb, &loc, 0, &ident);
if (!bh) {
- printk(KERN_ERR "udf: udf_count_free failed\n");
+ udf_err(sb, "udf_count_free failed\n");
goto out;
} else if (ident != TAG_IDENT_SBD) {
brelse(bh);
- printk(KERN_ERR "udf: udf_count_free failed\n");
+ udf_err(sb, "udf_count_free failed\n");
goto out;
}
@@ -2074,16 +2366,13 @@ static unsigned int udf_count_free_bitmap(struct super_block *sb,
ptr = (uint8_t *)bh->b_data;
while (bytes > 0) {
- while ((bytes > 0) && (index < sb->s_blocksize)) {
- value = ptr[index];
- accum += udf_bitmap_lookup[value & 0x0f];
- accum += udf_bitmap_lookup[value >> 4];
- index++;
- bytes--;
- }
+ u32 cur_bytes = min_t(u32, bytes, sb->s_blocksize - index);
+ accum += bitmap_weight((const unsigned long *)(ptr + index),
+ cur_bytes * 8);
+ bytes -= cur_bytes;
if (bytes) {
brelse(bh);
- newblock = udf_get_lb_pblock(sb, loc, ++block);
+ newblock = udf_get_lb_pblock(sb, &loc, ++block);
bh = udf_tread(sb, newblock);
if (!bh) {
udf_debug("read failed\n");
@@ -2094,10 +2383,7 @@ static unsigned int udf_count_free_bitmap(struct super_block *sb,
}
}
brelse(bh);
-
out:
- unlock_kernel();
-
return accum;
}
@@ -2106,12 +2392,11 @@ static unsigned int udf_count_free_table(struct super_block *sb,
{
unsigned int accum = 0;
uint32_t elen;
- kernel_lb_addr eloc;
+ struct kernel_lb_addr eloc;
int8_t etype;
struct extent_position epos;
- lock_kernel();
-
+ mutex_lock(&UDF_SB(sb)->s_alloc_mutex);
epos.block = UDF_I(table)->i_location;
epos.offset = sizeof(struct unallocSpaceEntry);
epos.bh = NULL;
@@ -2120,8 +2405,7 @@ static unsigned int udf_count_free_table(struct super_block *sb,
accum += (elen >> table->i_sb->s_blocksize_bits);
brelse(epos.bh);
-
- unlock_kernel();
+ mutex_unlock(&UDF_SB(sb)->s_alloc_mutex);
return accum;
}
diff --git a/fs/udf/symlink.c b/fs/udf/symlink.c
index 6ec99221e50..d7c6dbe4194 100644
--- a/fs/udf/symlink.c
+++ b/fs/udf/symlink.c
@@ -23,31 +23,34 @@
#include <asm/uaccess.h>
#include <linux/errno.h>
#include <linux/fs.h>
-#include <linux/udf_fs.h>
#include <linux/time.h>
#include <linux/mm.h>
#include <linux/stat.h>
-#include <linux/slab.h>
#include <linux/pagemap.h>
-#include <linux/smp_lock.h>
#include <linux/buffer_head.h>
#include "udf_i.h"
-static void udf_pc_to_char(struct super_block *sb, char *from, int fromlen,
- char *to)
+static void udf_pc_to_char(struct super_block *sb, unsigned char *from,
+ int fromlen, unsigned char *to)
{
struct pathComponent *pc;
int elen = 0;
- char *p = to;
+ unsigned char *p = to;
while (elen < fromlen) {
pc = (struct pathComponent *)(from + elen);
switch (pc->componentType) {
case 1:
- if (pc->lengthComponentIdent == 0) {
- p = to;
- *p++ = '/';
- }
+ /*
+ * Symlink points to some place which should be agreed
+ * upon between originator and receiver of the media. Ignore.
+ */
+ if (pc->lengthComponentIdent > 0)
+ break;
+ /* Fall through */
+ case 2:
+ p = to;
+ *p++ = '/';
break;
case 3:
memcpy(p, "../", 3);
@@ -76,17 +79,20 @@ static int udf_symlink_filler(struct file *file, struct page *page)
{
struct inode *inode = page->mapping->host;
struct buffer_head *bh = NULL;
- char *symlink;
+ unsigned char *symlink;
int err = -EIO;
- char *p = kmap(page);
+ unsigned char *p = kmap(page);
struct udf_inode_info *iinfo;
+ uint32_t pos;
- lock_kernel();
iinfo = UDF_I(inode);
+ pos = udf_block_map(inode, 0);
+
+ down_read(&iinfo->i_data_sem);
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
symlink = iinfo->i_ext.i_data + iinfo->i_lenEAttr;
} else {
- bh = sb_bread(inode->i_sb, udf_block_map(inode, 0));
+ bh = sb_bread(inode->i_sb, pos);
if (!bh)
goto out;
@@ -97,14 +103,14 @@ static int udf_symlink_filler(struct file *file, struct page *page)
udf_pc_to_char(inode->i_sb, symlink, inode->i_size, p);
brelse(bh);
- unlock_kernel();
+ up_read(&iinfo->i_data_sem);
SetPageUptodate(page);
kunmap(page);
unlock_page(page);
return 0;
out:
- unlock_kernel();
+ up_read(&iinfo->i_data_sem);
SetPageError(page);
kunmap(page);
unlock_page(page);
diff --git a/fs/udf/truncate.c b/fs/udf/truncate.c
index fe61be17cda..8a9657d7f7c 100644
--- a/fs/udf/truncate.c
+++ b/fs/udf/truncate.c
@@ -22,17 +22,16 @@
#include "udfdecl.h"
#include <linux/fs.h>
#include <linux/mm.h>
-#include <linux/udf_fs.h>
#include <linux/buffer_head.h>
#include "udf_i.h"
#include "udf_sb.h"
static void extent_trunc(struct inode *inode, struct extent_position *epos,
- kernel_lb_addr eloc, int8_t etype, uint32_t elen,
+ struct kernel_lb_addr *eloc, int8_t etype, uint32_t elen,
uint32_t nelen)
{
- kernel_lb_addr neloc = {};
+ struct kernel_lb_addr neloc = {};
int last_block = (elen + inode->i_sb->s_blocksize - 1) >>
inode->i_sb->s_blocksize_bits;
int first_block = (nelen + inode->i_sb->s_blocksize - 1) >>
@@ -44,12 +43,12 @@ static void extent_trunc(struct inode *inode, struct extent_position *epos,
last_block);
etype = (EXT_NOT_RECORDED_NOT_ALLOCATED >> 30);
} else
- neloc = eloc;
+ neloc = *eloc;
nelen = (etype << 30) | nelen;
}
if (elen != nelen) {
- udf_write_aext(inode, epos, neloc, nelen, 0);
+ udf_write_aext(inode, epos, &neloc, nelen, 0);
if (last_block - first_block > 0) {
if (etype == (EXT_RECORDED_ALLOCATED >> 30))
mark_inode_dirty(inode);
@@ -69,7 +68,7 @@ static void extent_trunc(struct inode *inode, struct extent_position *epos,
void udf_truncate_tail_extent(struct inode *inode)
{
struct extent_position epos = {};
- kernel_lb_addr eloc;
+ struct kernel_lb_addr eloc;
uint32_t elen, nelen;
uint64_t lbcount = 0;
int8_t etype = -1, netype;
@@ -84,9 +83,9 @@ void udf_truncate_tail_extent(struct inode *inode)
return;
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
- adsize = sizeof(short_ad);
+ adsize = sizeof(struct short_ad);
else if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
- adsize = sizeof(long_ad);
+ adsize = sizeof(struct long_ad);
else
BUG();
@@ -96,23 +95,21 @@ void udf_truncate_tail_extent(struct inode *inode)
lbcount += elen;
if (lbcount > inode->i_size) {
if (lbcount - inode->i_size >= inode->i_sb->s_blocksize)
- printk(KERN_WARNING
- "udf_truncate_tail_extent(): Too long "
- "extent after EOF in inode %u: i_size: "
- "%Ld lbcount: %Ld extent %u+%u\n",
- (unsigned)inode->i_ino,
- (long long)inode->i_size,
- (long long)lbcount,
- (unsigned)eloc.logicalBlockNum,
- (unsigned)elen);
+ udf_warn(inode->i_sb,
+ "Too long extent after EOF in inode %u: i_size: %lld lbcount: %lld extent %u+%u\n",
+ (unsigned)inode->i_ino,
+ (long long)inode->i_size,
+ (long long)lbcount,
+ (unsigned)eloc.logicalBlockNum,
+ (unsigned)elen);
nelen = elen - (lbcount - inode->i_size);
epos.offset -= adsize;
- extent_trunc(inode, &epos, eloc, etype, elen, nelen);
+ extent_trunc(inode, &epos, &eloc, etype, elen, nelen);
epos.offset += adsize;
if (udf_next_aext(inode, &epos, &eloc, &elen, 1) != -1)
- printk(KERN_ERR "udf_truncate_tail_extent(): "
- "Extent after EOF in inode %u.\n",
- (unsigned)inode->i_ino);
+ udf_err(inode->i_sb,
+ "Extent after EOF in inode %u\n",
+ (unsigned)inode->i_ino);
break;
}
}
@@ -125,7 +122,7 @@ void udf_truncate_tail_extent(struct inode *inode)
void udf_discard_prealloc(struct inode *inode)
{
struct extent_position epos = { NULL, 0, {0, 0} };
- kernel_lb_addr eloc;
+ struct kernel_lb_addr eloc;
uint32_t elen;
uint64_t lbcount = 0;
int8_t etype = -1, netype;
@@ -137,9 +134,9 @@ void udf_discard_prealloc(struct inode *inode)
return;
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
- adsize = sizeof(short_ad);
+ adsize = sizeof(struct short_ad);
else if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
- adsize = sizeof(long_ad);
+ adsize = sizeof(struct long_ad);
else
adsize = 0;
@@ -153,7 +150,7 @@ void udf_discard_prealloc(struct inode *inode)
if (etype == (EXT_NOT_RECORDED_ALLOCATED >> 30)) {
epos.offset -= adsize;
lbcount -= elen;
- extent_trunc(inode, &epos, eloc, etype, elen, 0);
+ extent_trunc(inode, &epos, &eloc, etype, elen, 0);
if (!epos.bh) {
iinfo->i_lenAlloc =
epos.offset -
@@ -180,154 +177,110 @@ void udf_discard_prealloc(struct inode *inode)
brelse(epos.bh);
}
+static void udf_update_alloc_ext_desc(struct inode *inode,
+ struct extent_position *epos,
+ u32 lenalloc)
+{
+ struct super_block *sb = inode->i_sb;
+ struct udf_sb_info *sbi = UDF_SB(sb);
+
+ struct allocExtDesc *aed = (struct allocExtDesc *) (epos->bh->b_data);
+ int len = sizeof(struct allocExtDesc);
+
+ aed->lengthAllocDescs = cpu_to_le32(lenalloc);
+ if (!UDF_QUERY_FLAG(sb, UDF_FLAG_STRICT) || sbi->s_udfrev >= 0x0201)
+ len += lenalloc;
+
+ udf_update_tag(epos->bh->b_data, len);
+ mark_buffer_dirty_inode(epos->bh, inode);
+}
+
+/*
+ * Truncate extents of inode to inode->i_size. This function can be used only
+ * for making file shorter. For making file longer, udf_extend_file() has to
+ * be used.
+ */
void udf_truncate_extents(struct inode *inode)
{
struct extent_position epos;
- kernel_lb_addr eloc, neloc = {};
+ struct kernel_lb_addr eloc, neloc = {};
uint32_t elen, nelen = 0, indirect_ext_len = 0, lenalloc;
int8_t etype;
struct super_block *sb = inode->i_sb;
- struct udf_sb_info *sbi = UDF_SB(sb);
sector_t first_block = inode->i_size >> sb->s_blocksize_bits, offset;
loff_t byte_offset;
int adsize;
struct udf_inode_info *iinfo = UDF_I(inode);
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
- adsize = sizeof(short_ad);
+ adsize = sizeof(struct short_ad);
else if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
- adsize = sizeof(long_ad);
+ adsize = sizeof(struct long_ad);
else
BUG();
etype = inode_bmap(inode, first_block, &epos, &eloc, &elen, &offset);
byte_offset = (offset << sb->s_blocksize_bits) +
(inode->i_size & (sb->s_blocksize - 1));
- if (etype != -1) {
- epos.offset -= adsize;
- extent_trunc(inode, &epos, eloc, etype, elen, byte_offset);
- epos.offset += adsize;
- if (byte_offset)
- lenalloc = epos.offset;
- else
- lenalloc = epos.offset - adsize;
-
- if (!epos.bh)
- lenalloc -= udf_file_entry_alloc_offset(inode);
- else
- lenalloc -= sizeof(struct allocExtDesc);
-
- while ((etype = udf_current_aext(inode, &epos, &eloc,
- &elen, 0)) != -1) {
- if (etype == (EXT_NEXT_EXTENT_ALLOCDECS >> 30)) {
- udf_write_aext(inode, &epos, neloc, nelen, 0);
- if (indirect_ext_len) {
- /* We managed to free all extents in the
- * indirect extent - free it too */
- if (!epos.bh)
- BUG();
- udf_free_blocks(sb, inode, epos.block,
- 0, indirect_ext_len);
- } else {
- if (!epos.bh) {
- iinfo->i_lenAlloc =
- lenalloc;
- mark_inode_dirty(inode);
- } else {
- struct allocExtDesc *aed =
- (struct allocExtDesc *)
- (epos.bh->b_data);
- int len =
- sizeof(struct allocExtDesc);
-
- aed->lengthAllocDescs =
- cpu_to_le32(lenalloc);
- if (!UDF_QUERY_FLAG(sb,
- UDF_FLAG_STRICT) ||
- sbi->s_udfrev >= 0x0201)
- len += lenalloc;
+ if (etype == -1) {
+ /* We should extend the file? */
+ WARN_ON(byte_offset);
+ return;
+ }
+ epos.offset -= adsize;
+ extent_trunc(inode, &epos, &eloc, etype, elen, byte_offset);
+ epos.offset += adsize;
+ if (byte_offset)
+ lenalloc = epos.offset;
+ else
+ lenalloc = epos.offset - adsize;
- udf_update_tag(epos.bh->b_data,
- len);
- mark_buffer_dirty_inode(
- epos.bh, inode);
- }
- }
- brelse(epos.bh);
- epos.offset = sizeof(struct allocExtDesc);
- epos.block = eloc;
- epos.bh = udf_tread(sb,
- udf_get_lb_pblock(sb, eloc, 0));
- if (elen)
- indirect_ext_len =
- (elen + sb->s_blocksize - 1) >>
- sb->s_blocksize_bits;
- else
- indirect_ext_len = 1;
- } else {
- extent_trunc(inode, &epos, eloc, etype,
- elen, 0);
- epos.offset += adsize;
- }
- }
+ if (!epos.bh)
+ lenalloc -= udf_file_entry_alloc_offset(inode);
+ else
+ lenalloc -= sizeof(struct allocExtDesc);
- if (indirect_ext_len) {
- if (!epos.bh)
- BUG();
- udf_free_blocks(sb, inode, epos.block, 0,
- indirect_ext_len);
- } else {
- if (!epos.bh) {
+ while ((etype = udf_current_aext(inode, &epos, &eloc,
+ &elen, 0)) != -1) {
+ if (etype == (EXT_NEXT_EXTENT_ALLOCDECS >> 30)) {
+ udf_write_aext(inode, &epos, &neloc, nelen, 0);
+ if (indirect_ext_len) {
+ /* We managed to free all extents in the
+ * indirect extent - free it too */
+ BUG_ON(!epos.bh);
+ udf_free_blocks(sb, NULL, &epos.block,
+ 0, indirect_ext_len);
+ } else if (!epos.bh) {
iinfo->i_lenAlloc = lenalloc;
mark_inode_dirty(inode);
- } else {
- struct allocExtDesc *aed =
- (struct allocExtDesc *)(epos.bh->b_data);
- aed->lengthAllocDescs = cpu_to_le32(lenalloc);
- if (!UDF_QUERY_FLAG(sb, UDF_FLAG_STRICT) ||
- sbi->s_udfrev >= 0x0201)
- udf_update_tag(epos.bh->b_data,
- lenalloc +
- sizeof(struct allocExtDesc));
- else
- udf_update_tag(epos.bh->b_data,
- sizeof(struct allocExtDesc));
- mark_buffer_dirty_inode(epos.bh, inode);
- }
- }
- } else if (inode->i_size) {
- if (byte_offset) {
- kernel_long_ad extent;
-
- /*
- * OK, there is not extent covering inode->i_size and
- * no extent above inode->i_size => truncate is
- * extending the file by 'offset' blocks.
- */
- if ((!epos.bh &&
- epos.offset ==
- udf_file_entry_alloc_offset(inode)) ||
- (epos.bh && epos.offset ==
- sizeof(struct allocExtDesc))) {
- /* File has no extents at all or has empty last
- * indirect extent! Create a fake extent... */
- extent.extLocation.logicalBlockNum = 0;
- extent.extLocation.partitionReferenceNum = 0;
- extent.extLength =
- EXT_NOT_RECORDED_NOT_ALLOCATED;
- } else {
- epos.offset -= adsize;
- etype = udf_next_aext(inode, &epos,
- &extent.extLocation,
- &extent.extLength, 0);
- extent.extLength |= etype << 30;
- }
- udf_extend_file(inode, &epos, &extent,
- offset +
- ((inode->i_size &
- (sb->s_blocksize - 1)) != 0));
+ } else
+ udf_update_alloc_ext_desc(inode,
+ &epos, lenalloc);
+ brelse(epos.bh);
+ epos.offset = sizeof(struct allocExtDesc);
+ epos.block = eloc;
+ epos.bh = udf_tread(sb,
+ udf_get_lb_pblock(sb, &eloc, 0));
+ if (elen)
+ indirect_ext_len =
+ (elen + sb->s_blocksize - 1) >>
+ sb->s_blocksize_bits;
+ else
+ indirect_ext_len = 1;
+ } else {
+ extent_trunc(inode, &epos, &eloc, etype, elen, 0);
+ epos.offset += adsize;
}
}
+
+ if (indirect_ext_len) {
+ BUG_ON(!epos.bh);
+ udf_free_blocks(sb, NULL, &epos.block, 0, indirect_ext_len);
+ } else if (!epos.bh) {
+ iinfo->i_lenAlloc = lenalloc;
+ mark_inode_dirty(inode);
+ } else
+ udf_update_alloc_ext_desc(inode, &epos, lenalloc);
iinfo->i_lenExtents = inode->i_size;
brelse(epos.bh);
diff --git a/fs/udf/udf_i.h b/fs/udf/udf_i.h
index ccc52f16bf7..b5cd8ed2aa1 100644
--- a/fs/udf/udf_i.h
+++ b/fs/udf/udf_i.h
@@ -1,10 +1,62 @@
-#ifndef __LINUX_UDF_I_H
-#define __LINUX_UDF_I_H
+#ifndef _UDF_I_H
+#define _UDF_I_H
+
+struct extent_position {
+ struct buffer_head *bh;
+ uint32_t offset;
+ struct kernel_lb_addr block;
+};
+
+struct udf_ext_cache {
+ /* Extent position */
+ struct extent_position epos;
+ /* Start logical offset in bytes */
+ loff_t lstart;
+};
+
+/*
+ * The i_data_sem and i_mutex serve for protection of allocation information
+ * of a regular files and symlinks. This includes all extents belonging to
+ * the file/symlink, a fact whether data are in-inode or in external data
+ * blocks, preallocation, goal block information... When extents are read,
+ * i_mutex or i_data_sem must be held (for reading is enough in case of
+ * i_data_sem). When extents are changed, i_data_sem must be held for writing
+ * and also i_mutex must be held.
+ *
+ * For directories i_mutex is used for all the necessary protection.
+ */
+
+struct udf_inode_info {
+ struct timespec i_crtime;
+ /* Physical address of inode */
+ struct kernel_lb_addr i_location;
+ __u64 i_unique;
+ __u32 i_lenEAttr;
+ __u32 i_lenAlloc;
+ __u64 i_lenExtents;
+ __u32 i_next_alloc_block;
+ __u32 i_next_alloc_goal;
+ __u32 i_checkpoint;
+ unsigned i_alloc_type : 3;
+ unsigned i_efe : 1; /* extendedFileEntry */
+ unsigned i_use : 1; /* unallocSpaceEntry */
+ unsigned i_strat4096 : 1;
+ unsigned reserved : 26;
+ union {
+ struct short_ad *i_sad;
+ struct long_ad *i_lad;
+ __u8 *i_data;
+ } i_ext;
+ struct rw_semaphore i_data_sem;
+ struct udf_ext_cache cached_extent;
+ /* Spinlock for protecting extent cache */
+ spinlock_t i_extent_cache_lock;
+ struct inode vfs_inode;
+};
-#include <linux/udf_fs_i.h>
static inline struct udf_inode_info *UDF_I(struct inode *inode)
{
return list_entry(inode, struct udf_inode_info, vfs_inode);
}
-#endif /* !defined(_LINUX_UDF_I_H) */
+#endif /* _UDF_I_H) */
diff --git a/fs/udf/udf_sb.h b/fs/udf/udf_sb.h
index 737d1c604ee..1f32c7bd9f5 100644
--- a/fs/udf/udf_sb.h
+++ b/fs/udf/udf_sb.h
@@ -1,10 +1,13 @@
#ifndef __LINUX_UDF_SB_H
#define __LINUX_UDF_SB_H
+#include <linux/mutex.h>
+#include <linux/bitops.h>
+
/* Since UDF 2.01 is ISO 13346 based... */
#define UDF_SUPER_MAGIC 0x15013346
-#define UDF_MAX_READ_VERSION 0x0201
+#define UDF_MAX_READ_VERSION 0x0250
#define UDF_MAX_WRITE_VERSION 0x0201
#define UDF_FLAG_USE_EXTENDED_FE 0
@@ -28,6 +31,7 @@
#define UDF_FLAG_GID_SET 16
#define UDF_FLAG_SESSION_SET 17
#define UDF_FLAG_LASTBLOCK_SET 18
+#define UDF_FLAG_BLOCKSIZE_SET 19
#define UDF_PART_FLAG_UNALLOC_BITMAP 0x0001
#define UDF_PART_FLAG_UNALLOC_TABLE 0x0002
@@ -38,17 +42,143 @@
#define UDF_PART_FLAG_REWRITABLE 0x0040
#define UDF_PART_FLAG_OVERWRITABLE 0x0080
+#define UDF_MAX_BLOCK_LOADED 8
+
+#define UDF_TYPE1_MAP15 0x1511U
+#define UDF_VIRTUAL_MAP15 0x1512U
+#define UDF_VIRTUAL_MAP20 0x2012U
+#define UDF_SPARABLE_MAP15 0x1522U
+#define UDF_METADATA_MAP25 0x2511U
+
+#define UDF_INVALID_MODE ((umode_t)-1)
+
+#pragma pack(1) /* XXX(hch): Why? This file just defines in-core structures */
+
+#define MF_DUPLICATE_MD 0x01
+#define MF_MIRROR_FE_LOADED 0x02
+
+struct udf_meta_data {
+ __u32 s_meta_file_loc;
+ __u32 s_mirror_file_loc;
+ __u32 s_bitmap_file_loc;
+ __u32 s_alloc_unit_size;
+ __u16 s_align_unit_size;
+ int s_flags;
+ struct inode *s_metadata_fe;
+ struct inode *s_mirror_fe;
+ struct inode *s_bitmap_fe;
+};
+
+struct udf_sparing_data {
+ __u16 s_packet_len;
+ struct buffer_head *s_spar_map[4];
+};
+
+struct udf_virtual_data {
+ __u32 s_num_entries;
+ __u16 s_start_offset;
+};
+
+struct udf_bitmap {
+ __u32 s_extPosition;
+ int s_nr_groups;
+ struct buffer_head *s_block_bitmap[0];
+};
+
+struct udf_part_map {
+ union {
+ struct udf_bitmap *s_bitmap;
+ struct inode *s_table;
+ } s_uspace;
+ union {
+ struct udf_bitmap *s_bitmap;
+ struct inode *s_table;
+ } s_fspace;
+ __u32 s_partition_root;
+ __u32 s_partition_len;
+ __u16 s_partition_type;
+ __u16 s_partition_num;
+ union {
+ struct udf_sparing_data s_sparing;
+ struct udf_virtual_data s_virtual;
+ struct udf_meta_data s_metadata;
+ } s_type_specific;
+ __u32 (*s_partition_func)(struct super_block *, __u32, __u16, __u32);
+ __u16 s_volumeseqnum;
+ __u16 s_partition_flags;
+};
+
+#pragma pack()
+
+struct udf_sb_info {
+ struct udf_part_map *s_partmaps;
+ __u8 s_volume_ident[32];
+
+ /* Overall info */
+ __u16 s_partitions;
+ __u16 s_partition;
+
+ /* Sector headers */
+ __s32 s_session;
+ __u32 s_anchor;
+ __u32 s_last_block;
+
+ struct buffer_head *s_lvid_bh;
+
+ /* Default permissions */
+ umode_t s_umask;
+ kgid_t s_gid;
+ kuid_t s_uid;
+ umode_t s_fmode;
+ umode_t s_dmode;
+ /* Lock protecting consistency of above permission settings */
+ rwlock_t s_cred_lock;
+
+ /* Root Info */
+ struct timespec s_record_time;
+
+ /* Fileset Info */
+ __u16 s_serial_number;
+
+ /* highest UDF revision we have recorded to this media */
+ __u16 s_udfrev;
+
+ /* Miscellaneous flags */
+ unsigned long s_flags;
+
+ /* Encoding info */
+ struct nls_table *s_nls_map;
+
+ /* VAT inode */
+ struct inode *s_vat_inode;
+
+ struct mutex s_alloc_mutex;
+ /* Protected by s_alloc_mutex */
+ unsigned int s_lvid_dirty;
+};
+
static inline struct udf_sb_info *UDF_SB(struct super_block *sb)
{
return sb->s_fs_info;
}
-struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct udf_sb_info *sbi);
+struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct super_block *sb);
int udf_compute_nr_groups(struct super_block *sb, u32 partition);
-#define UDF_QUERY_FLAG(X,Y) ( UDF_SB(X)->s_flags & ( 1 << (Y) ) )
-#define UDF_SET_FLAG(X,Y) ( UDF_SB(X)->s_flags |= ( 1 << (Y) ) )
-#define UDF_CLEAR_FLAG(X,Y) ( UDF_SB(X)->s_flags &= ~( 1 << (Y) ) )
+static inline int UDF_QUERY_FLAG(struct super_block *sb, int flag)
+{
+ return test_bit(flag, &UDF_SB(sb)->s_flags);
+}
+
+static inline void UDF_SET_FLAG(struct super_block *sb, int flag)
+{
+ set_bit(flag, &UDF_SB(sb)->s_flags);
+}
+
+static inline void UDF_CLEAR_FLAG(struct super_block *sb, int flag)
+{
+ clear_bit(flag, &UDF_SB(sb)->s_flags);
+}
#endif /* __LINUX_UDF_SB_H */
diff --git a/fs/udf/udfdecl.h b/fs/udf/udfdecl.h
index 681dc2b66cd..be7dabbbcb4 100644
--- a/fs/udf/udfdecl.h
+++ b/fs/udf/udfdecl.h
@@ -1,17 +1,46 @@
#ifndef __UDF_DECL_H
#define __UDF_DECL_H
-#include <linux/udf_fs.h>
+#define pr_fmt(fmt) "UDF-fs: " fmt
+
#include "ecma_167.h"
#include "osta_udf.h"
#include <linux/fs.h>
#include <linux/types.h>
-#include <linux/udf_fs_i.h>
-#include <linux/udf_fs_sb.h>
#include <linux/buffer_head.h>
+#include <linux/udf_fs_i.h>
+#include "udf_sb.h"
#include "udfend.h"
+#include "udf_i.h"
+
+#define UDF_PREALLOCATE
+#define UDF_DEFAULT_PREALLOC_BLOCKS 8
+
+extern __printf(3, 4) void _udf_err(struct super_block *sb,
+ const char *function, const char *fmt, ...);
+#define udf_err(sb, fmt, ...) \
+ _udf_err(sb, __func__, fmt, ##__VA_ARGS__)
+
+extern __printf(3, 4) void _udf_warn(struct super_block *sb,
+ const char *function, const char *fmt, ...);
+#define udf_warn(sb, fmt, ...) \
+ _udf_warn(sb, __func__, fmt, ##__VA_ARGS__)
+
+#define udf_info(fmt, ...) \
+ pr_info("INFO " fmt, ##__VA_ARGS__)
+
+#undef UDFFS_DEBUG
+
+#ifdef UDFFS_DEBUG
+#define udf_debug(fmt, ...) \
+ printk(KERN_DEBUG pr_fmt("%s:%d:%s: " fmt), \
+ __FILE__, __LINE__, __func__, ##__VA_ARGS__)
+#else
+#define udf_debug(fmt, ...) \
+ no_printk(fmt, ##__VA_ARGS__)
+#endif
#define udf_fixed_to_variable(x) ( ( ( (x) >> 5 ) * 39 ) + ( (x) & 0x0000001F ) )
#define udf_variable_to_fixed(x) ( ( ( (x) / 39 ) << 5 ) + ( (x) % 39 ) )
@@ -23,21 +52,27 @@
#define UDF_NAME_LEN 256
#define UDF_PATH_LEN 1023
-#define udf_file_entry_alloc_offset(inode)\
- (UDF_I(inode)->i_use ?\
- sizeof(struct unallocSpaceEntry) :\
- ((UDF_I(inode)->i_efe ?\
- sizeof(struct extendedFileEntry) :\
- sizeof(struct fileEntry)) + UDF_I(inode)->i_lenEAttr))
-
-#define udf_ext0_offset(inode)\
- (UDF_I(inode)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB ?\
- udf_file_entry_alloc_offset(inode) : 0)
-
-#define udf_get_lb_pblock(sb,loc,offset) udf_get_pblock((sb), (loc).logicalBlockNum, (loc).partitionReferenceNum, (offset))
+static inline size_t udf_file_entry_alloc_offset(struct inode *inode)
+{
+ struct udf_inode_info *iinfo = UDF_I(inode);
+ if (iinfo->i_use)
+ return sizeof(struct unallocSpaceEntry);
+ else if (iinfo->i_efe)
+ return sizeof(struct extendedFileEntry) + iinfo->i_lenEAttr;
+ else
+ return sizeof(struct fileEntry) + iinfo->i_lenEAttr;
+}
+
+static inline size_t udf_ext0_offset(struct inode *inode)
+{
+ if (UDF_I(inode)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
+ return udf_file_entry_alloc_offset(inode);
+ else
+ return 0;
+}
/* computes tag checksum */
-u8 udf_tag_checksum(const tag *t);
+u8 udf_tag_checksum(const struct tag *t);
struct dentry;
struct inode;
@@ -45,10 +80,12 @@ struct task_struct;
struct buffer_head;
struct super_block;
+extern const struct export_operations udf_export_ops;
extern const struct inode_operations udf_dir_inode_operations;
extern const struct file_operations udf_dir_operations;
extern const struct inode_operations udf_file_inode_operations;
extern const struct file_operations udf_file_operations;
+extern const struct inode_operations udf_symlink_inode_operations;
extern const struct address_space_operations udf_aops;
extern const struct address_space_operations udf_adinicb_aops;
extern const struct address_space_operations udf_symlink_aops;
@@ -66,7 +103,7 @@ struct udf_vds_record {
};
struct generic_desc {
- tag descTag;
+ struct tag descTag;
__le32 volDescSeqNum;
};
@@ -76,15 +113,22 @@ struct ustr {
uint8_t u_len;
};
-struct extent_position {
- struct buffer_head *bh;
- uint32_t offset;
- kernel_lb_addr block;
-};
/* super.c */
-extern void udf_error(struct super_block *, const char *, const char *, ...);
-extern void udf_warning(struct super_block *, const char *, const char *, ...);
+
+static inline void udf_updated_lvid(struct super_block *sb)
+{
+ struct buffer_head *bh = UDF_SB(sb)->s_lvid_bh;
+
+ BUG_ON(!bh);
+ WARN_ON_ONCE(((struct logicalVolIntegrityDesc *)
+ bh->b_data)->integrityType !=
+ cpu_to_le32(LVID_INTEGRITY_TYPE_OPEN));
+ UDF_SB(sb)->s_lvid_dirty = 1;
+}
+extern u64 lvid_get_unique_id(struct super_block *sb);
+struct inode *udf_find_metadata_inode_efe(struct super_block *sb,
+ u32 meta_file_loc, u32 partition_num);
/* namei.c */
extern int udf_write_fi(struct inode *inode, struct fileIdentDesc *,
@@ -92,35 +136,29 @@ extern int udf_write_fi(struct inode *inode, struct fileIdentDesc *,
uint8_t *, uint8_t *);
/* file.c */
-extern int udf_ioctl(struct inode *, struct file *, unsigned int,
- unsigned long);
-
+extern long udf_ioctl(struct file *, unsigned int, unsigned long);
/* inode.c */
-extern struct inode *udf_iget(struct super_block *, kernel_lb_addr);
-extern int udf_sync_inode(struct inode *);
-extern void udf_expand_file_adinicb(struct inode *, int, int *);
+extern struct inode *udf_iget(struct super_block *, struct kernel_lb_addr *);
+extern int udf_expand_file_adinicb(struct inode *);
extern struct buffer_head *udf_expand_dir_adinicb(struct inode *, int *, int *);
extern struct buffer_head *udf_bread(struct inode *, int, int, int *);
-extern void udf_truncate(struct inode *);
+extern int udf_setsize(struct inode *, loff_t);
extern void udf_read_inode(struct inode *);
-extern void udf_delete_inode(struct inode *);
-extern void udf_clear_inode(struct inode *);
-extern int udf_write_inode(struct inode *, int);
+extern void udf_evict_inode(struct inode *);
+extern int udf_write_inode(struct inode *, struct writeback_control *wbc);
extern long udf_block_map(struct inode *, sector_t);
-extern int udf_extend_file(struct inode *, struct extent_position *,
- kernel_long_ad *, sector_t);
extern int8_t inode_bmap(struct inode *, sector_t, struct extent_position *,
- kernel_lb_addr *, uint32_t *, sector_t *);
-extern int8_t udf_add_aext(struct inode *, struct extent_position *,
- kernel_lb_addr, uint32_t, int);
-extern int8_t udf_write_aext(struct inode *, struct extent_position *,
- kernel_lb_addr, uint32_t, int);
+ struct kernel_lb_addr *, uint32_t *, sector_t *);
+extern int udf_add_aext(struct inode *, struct extent_position *,
+ struct kernel_lb_addr *, uint32_t, int);
+extern void udf_write_aext(struct inode *, struct extent_position *,
+ struct kernel_lb_addr *, uint32_t, int);
extern int8_t udf_delete_aext(struct inode *, struct extent_position,
- kernel_lb_addr, uint32_t);
+ struct kernel_lb_addr, uint32_t);
extern int8_t udf_next_aext(struct inode *, struct extent_position *,
- kernel_lb_addr *, uint32_t *, int);
+ struct kernel_lb_addr *, uint32_t *, int);
extern int8_t udf_current_aext(struct inode *, struct extent_position *,
- kernel_lb_addr *, uint32_t *, int);
+ struct kernel_lb_addr *, uint32_t *, int);
/* misc.c */
extern struct buffer_head *udf_tgetblk(struct super_block *, int);
@@ -132,7 +170,7 @@ extern struct genericFormat *udf_get_extendedattr(struct inode *, uint32_t,
extern struct buffer_head *udf_read_tagged(struct super_block *, uint32_t,
uint32_t, uint16_t *);
extern struct buffer_head *udf_read_ptagged(struct super_block *,
- kernel_lb_addr, uint32_t,
+ struct kernel_lb_addr *, uint32_t,
uint16_t *);
extern void udf_update_tag(char *, int);
extern void udf_new_tag(char *, uint16_t, uint16_t, uint16_t, uint32_t, int);
@@ -150,18 +188,28 @@ extern uint32_t udf_get_pblock_virt20(struct super_block *, uint32_t, uint16_t,
uint32_t);
extern uint32_t udf_get_pblock_spar15(struct super_block *, uint32_t, uint16_t,
uint32_t);
+extern uint32_t udf_get_pblock_meta25(struct super_block *, uint32_t, uint16_t,
+ uint32_t);
extern int udf_relocate_blocks(struct super_block *, long, long *);
+static inline uint32_t
+udf_get_lb_pblock(struct super_block *sb, struct kernel_lb_addr *loc,
+ uint32_t offset)
+{
+ return udf_get_pblock(sb, loc->logicalBlockNum,
+ loc->partitionReferenceNum, offset);
+}
+
/* unicode.c */
extern int udf_get_filename(struct super_block *, uint8_t *, uint8_t *, int);
extern int udf_put_filename(struct super_block *, const uint8_t *, uint8_t *,
int);
extern int udf_build_ustr(struct ustr *, dstring *, int);
-extern int udf_CS0toUTF8(struct ustr *, struct ustr *);
+extern int udf_CS0toUTF8(struct ustr *, const struct ustr *);
/* ialloc.c */
extern void udf_free_inode(struct inode *);
-extern struct inode *udf_new_inode(struct inode *, int, int *);
+extern struct inode *udf_new_inode(struct inode *, umode_t, int *);
/* truncate.c */
extern void udf_truncate_tail_extent(struct inode *);
@@ -170,32 +218,27 @@ extern void udf_truncate_extents(struct inode *);
/* balloc.c */
extern void udf_free_blocks(struct super_block *, struct inode *,
- kernel_lb_addr, uint32_t, uint32_t);
+ struct kernel_lb_addr *, uint32_t, uint32_t);
extern int udf_prealloc_blocks(struct super_block *, struct inode *, uint16_t,
uint32_t, uint32_t);
extern int udf_new_block(struct super_block *, struct inode *, uint16_t,
uint32_t, int *);
-/* fsync.c */
-extern int udf_fsync_file(struct file *, struct dentry *, int);
-
/* directory.c */
extern struct fileIdentDesc *udf_fileident_read(struct inode *, loff_t *,
struct udf_fileident_bh *,
struct fileIdentDesc *,
struct extent_position *,
- kernel_lb_addr *, uint32_t *,
+ struct kernel_lb_addr *, uint32_t *,
sector_t *);
extern struct fileIdentDesc *udf_get_fileident(void *buffer, int bufsize,
int *offset);
-extern long_ad *udf_get_filelongad(uint8_t *, int, uint32_t *, int);
-extern short_ad *udf_get_fileshortad(uint8_t *, int, uint32_t *, int);
-
-/* crc.c */
-extern uint16_t udf_crc(uint8_t *, uint32_t, uint16_t);
+extern struct long_ad *udf_get_filelongad(uint8_t *, int, uint32_t *, int);
+extern struct short_ad *udf_get_fileshortad(uint8_t *, int, uint32_t *, int);
/* udftime.c */
-extern time_t *udf_stamp_to_time(time_t *, long *, kernel_timestamp);
-extern kernel_timestamp *udf_time_to_stamp(kernel_timestamp *, struct timespec);
+extern struct timespec *udf_disk_stamp_to_time(struct timespec *dest,
+ struct timestamp src);
+extern struct timestamp *udf_time_to_disk_stamp(struct timestamp *dest, struct timespec src);
#endif /* __UDF_DECL_H */
diff --git a/fs/udf/udfend.h b/fs/udf/udfend.h
index c4bd1203f85..6a9f3a9cc42 100644
--- a/fs/udf/udfend.h
+++ b/fs/udf/udfend.h
@@ -4,9 +4,9 @@
#include <asm/byteorder.h>
#include <linux/string.h>
-static inline kernel_lb_addr lelb_to_cpu(lb_addr in)
+static inline struct kernel_lb_addr lelb_to_cpu(struct lb_addr in)
{
- kernel_lb_addr out;
+ struct kernel_lb_addr out;
out.logicalBlockNum = le32_to_cpu(in.logicalBlockNum);
out.partitionReferenceNum = le16_to_cpu(in.partitionReferenceNum);
@@ -14,9 +14,9 @@ static inline kernel_lb_addr lelb_to_cpu(lb_addr in)
return out;
}
-static inline lb_addr cpu_to_lelb(kernel_lb_addr in)
+static inline struct lb_addr cpu_to_lelb(struct kernel_lb_addr in)
{
- lb_addr out;
+ struct lb_addr out;
out.logicalBlockNum = cpu_to_le32(in.logicalBlockNum);
out.partitionReferenceNum = cpu_to_le16(in.partitionReferenceNum);
@@ -24,20 +24,9 @@ static inline lb_addr cpu_to_lelb(kernel_lb_addr in)
return out;
}
-static inline kernel_timestamp lets_to_cpu(timestamp in)
+static inline struct short_ad lesa_to_cpu(struct short_ad in)
{
- kernel_timestamp out;
-
- memcpy(&out, &in, sizeof(timestamp));
- out.typeAndTimezone = le16_to_cpu(in.typeAndTimezone);
- out.year = le16_to_cpu(in.year);
-
- return out;
-}
-
-static inline short_ad lesa_to_cpu(short_ad in)
-{
- short_ad out;
+ struct short_ad out;
out.extLength = le32_to_cpu(in.extLength);
out.extPosition = le32_to_cpu(in.extPosition);
@@ -45,9 +34,9 @@ static inline short_ad lesa_to_cpu(short_ad in)
return out;
}
-static inline short_ad cpu_to_lesa(short_ad in)
+static inline struct short_ad cpu_to_lesa(struct short_ad in)
{
- short_ad out;
+ struct short_ad out;
out.extLength = cpu_to_le32(in.extLength);
out.extPosition = cpu_to_le32(in.extPosition);
@@ -55,9 +44,9 @@ static inline short_ad cpu_to_lesa(short_ad in)
return out;
}
-static inline kernel_long_ad lela_to_cpu(long_ad in)
+static inline struct kernel_long_ad lela_to_cpu(struct long_ad in)
{
- kernel_long_ad out;
+ struct kernel_long_ad out;
out.extLength = le32_to_cpu(in.extLength);
out.extLocation = lelb_to_cpu(in.extLocation);
@@ -65,9 +54,9 @@ static inline kernel_long_ad lela_to_cpu(long_ad in)
return out;
}
-static inline long_ad cpu_to_lela(kernel_long_ad in)
+static inline struct long_ad cpu_to_lela(struct kernel_long_ad in)
{
- long_ad out;
+ struct long_ad out;
out.extLength = cpu_to_le32(in.extLength);
out.extLocation = cpu_to_lelb(in.extLocation);
@@ -75,9 +64,9 @@ static inline long_ad cpu_to_lela(kernel_long_ad in)
return out;
}
-static inline kernel_extent_ad leea_to_cpu(extent_ad in)
+static inline struct kernel_extent_ad leea_to_cpu(struct extent_ad in)
{
- kernel_extent_ad out;
+ struct kernel_extent_ad out;
out.extLength = le32_to_cpu(in.extLength);
out.extLocation = le32_to_cpu(in.extLocation);
@@ -85,15 +74,4 @@ static inline kernel_extent_ad leea_to_cpu(extent_ad in)
return out;
}
-static inline timestamp cpu_to_lets(kernel_timestamp in)
-{
- timestamp out;
-
- memcpy(&out, &in, sizeof(timestamp));
- out.typeAndTimezone = cpu_to_le16(in.typeAndTimezone);
- out.year = cpu_to_le16(in.year);
-
- return out;
-}
-
#endif /* __UDF_ENDIAN_H */
diff --git a/fs/udf/udftime.c b/fs/udf/udftime.c
index ce595732ba6..1f11483eba6 100644
--- a/fs/udf/udftime.c
+++ b/fs/udf/udftime.c
@@ -34,9 +34,10 @@
* http://www.boulder.nist.gov/timefreq/pubs/bulletin/leapsecond.htm
*/
+#include "udfdecl.h"
+
#include <linux/types.h>
#include <linux/kernel.h>
-#include "udfdecl.h"
#define EPOCH_YEAR 1970
@@ -85,39 +86,40 @@ extern struct timezone sys_tz;
#define SECS_PER_HOUR (60 * 60)
#define SECS_PER_DAY (SECS_PER_HOUR * 24)
-time_t *udf_stamp_to_time(time_t *dest, long *dest_usec, kernel_timestamp src)
+struct timespec *
+udf_disk_stamp_to_time(struct timespec *dest, struct timestamp src)
{
int yday;
- uint8_t type = src.typeAndTimezone >> 12;
+ u16 typeAndTimezone = le16_to_cpu(src.typeAndTimezone);
+ u16 year = le16_to_cpu(src.year);
+ uint8_t type = typeAndTimezone >> 12;
int16_t offset;
if (type == 1) {
- offset = src.typeAndTimezone << 4;
+ offset = typeAndTimezone << 4;
/* sign extent offset */
offset = (offset >> 4);
if (offset == -2047) /* unspecified offset */
offset = 0;
- } else {
+ } else
offset = 0;
- }
- if ((src.year < EPOCH_YEAR) ||
- (src.year >= EPOCH_YEAR + MAX_YEAR_SECONDS)) {
- *dest = -1;
- *dest_usec = -1;
+ if ((year < EPOCH_YEAR) ||
+ (year >= EPOCH_YEAR + MAX_YEAR_SECONDS)) {
return NULL;
}
- *dest = year_seconds[src.year - EPOCH_YEAR];
- *dest -= offset * 60;
+ dest->tv_sec = year_seconds[year - EPOCH_YEAR];
+ dest->tv_sec -= offset * 60;
- yday = ((__mon_yday[__isleap(src.year)][src.month - 1]) + src.day - 1);
- *dest += (((yday * 24) + src.hour) * 60 + src.minute) * 60 + src.second;
- *dest_usec = src.centiseconds * 10000 +
- src.hundredsOfMicroseconds * 100 + src.microseconds;
+ yday = ((__mon_yday[__isleap(year)][src.month - 1]) + src.day - 1);
+ dest->tv_sec += (((yday * 24) + src.hour) * 60 + src.minute) * 60 + src.second;
+ dest->tv_nsec = 1000 * (src.centiseconds * 10000 +
+ src.hundredsOfMicroseconds * 100 + src.microseconds);
return dest;
}
-kernel_timestamp *udf_time_to_stamp(kernel_timestamp *dest, struct timespec ts)
+struct timestamp *
+udf_time_to_disk_stamp(struct timestamp *dest, struct timespec ts)
{
long int days, rem, y;
const unsigned short int *ip;
@@ -128,7 +130,7 @@ kernel_timestamp *udf_time_to_stamp(kernel_timestamp *dest, struct timespec ts)
if (!dest)
return NULL;
- dest->typeAndTimezone = 0x1000 | (offset & 0x0FFF);
+ dest->typeAndTimezone = cpu_to_le16(0x1000 | (offset & 0x0FFF));
ts.tv_sec += offset * 60;
days = ts.tv_sec / SECS_PER_DAY;
@@ -151,7 +153,7 @@ kernel_timestamp *udf_time_to_stamp(kernel_timestamp *dest, struct timespec ts)
- LEAPS_THRU_END_OF(y - 1));
y = yg;
}
- dest->year = y;
+ dest->year = cpu_to_le16(y);
ip = __mon_yday[__isleap(y)];
for (y = 11; days < (long int)ip[y]; --y)
continue;
diff --git a/fs/udf/unicode.c b/fs/udf/unicode.c
index e533b11703b..44b815e57f9 100644
--- a/fs/udf/unicode.c
+++ b/fs/udf/unicode.c
@@ -23,7 +23,8 @@
#include <linux/kernel.h>
#include <linux/string.h> /* for memset */
#include <linux/nls.h>
-#include <linux/udf_fs.h>
+#include <linux/crc-itu-t.h>
+#include <linux/slab.h>
#include "udf_sb.h"
@@ -49,14 +50,16 @@ int udf_build_ustr(struct ustr *dest, dstring *ptr, int size)
{
int usesize;
- if ((!dest) || (!ptr) || (!size))
+ if (!dest || !ptr || !size)
return -1;
+ BUG_ON(size < 2);
- memset(dest, 0, sizeof(struct ustr));
- usesize = (size > UDF_NAME_LEN) ? UDF_NAME_LEN : size;
+ usesize = min_t(size_t, ptr[size - 1], sizeof(dest->u_name));
+ usesize = min(usesize, size - 2);
dest->u_cmpID = ptr[0];
- dest->u_len = ptr[size - 1];
- memcpy(dest->u_name, ptr + 1, usesize - 1);
+ dest->u_len = usesize;
+ memcpy(dest->u_name, ptr + 1, usesize);
+ memset(dest->u_name + usesize, 0, sizeof(dest->u_name) - usesize);
return 0;
}
@@ -83,9 +86,6 @@ static int udf_build_ustr_exact(struct ustr *dest, dstring *ptr, int exactsize)
* PURPOSE
* Convert OSTA Compressed Unicode to the UTF-8 equivalent.
*
- * DESCRIPTION
- * This routine is only called by udf_filldir().
- *
* PRE-CONDITIONS
* utf Pointer to UTF-8 output buffer.
* ocu Pointer to OSTA Compressed Unicode input buffer
@@ -99,43 +99,39 @@ static int udf_build_ustr_exact(struct ustr *dest, dstring *ptr, int exactsize)
* November 12, 1997 - Andrew E. Mileski
* Written, tested, and released.
*/
-int udf_CS0toUTF8(struct ustr *utf_o, struct ustr *ocu_i)
+int udf_CS0toUTF8(struct ustr *utf_o, const struct ustr *ocu_i)
{
- uint8_t *ocu;
- uint32_t c;
+ const uint8_t *ocu;
uint8_t cmp_id, ocu_len;
int i;
- ocu = ocu_i->u_name;
-
ocu_len = ocu_i->u_len;
- cmp_id = ocu_i->u_cmpID;
- utf_o->u_len = 0;
-
if (ocu_len == 0) {
memset(utf_o, 0, sizeof(struct ustr));
- utf_o->u_cmpID = 0;
- utf_o->u_len = 0;
return 0;
}
- if ((cmp_id != 8) && (cmp_id != 16)) {
- printk(KERN_ERR "udf: unknown compression code (%d) stri=%s\n",
+ cmp_id = ocu_i->u_cmpID;
+ if (cmp_id != 8 && cmp_id != 16) {
+ memset(utf_o, 0, sizeof(struct ustr));
+ pr_err("unknown compression code (%d) stri=%s\n",
cmp_id, ocu_i->u_name);
return 0;
}
+ ocu = ocu_i->u_name;
+ utf_o->u_len = 0;
for (i = 0; (i < ocu_len) && (utf_o->u_len <= (UDF_NAME_LEN - 3));) {
/* Expand OSTA compressed Unicode to Unicode */
- c = ocu[i++];
+ uint32_t c = ocu[i++];
if (cmp_id == 16)
c = (c << 8) | ocu[i++];
/* Compress Unicode to UTF-8 */
- if (c < 0x80U) {
+ if (c < 0x80U)
utf_o->u_name[utf_o->u_len++] = (uint8_t)c;
- } else if (c < 0x800U) {
+ else if (c < 0x800U) {
utf_o->u_name[utf_o->u_len++] =
(uint8_t)(0xc0 | (c >> 6));
utf_o->u_name[utf_o->u_len++] =
@@ -246,7 +242,7 @@ try_again:
if (utf_cnt) {
error_out:
ocu[++u_len] = '?';
- printk(KERN_DEBUG "udf: bad UTF-8 character\n");
+ printk(KERN_DEBUG pr_fmt("bad UTF-8 character\n"));
}
ocu[length - 1] = (uint8_t)u_len + 1;
@@ -255,40 +251,42 @@ error_out:
}
static int udf_CS0toNLS(struct nls_table *nls, struct ustr *utf_o,
- struct ustr *ocu_i)
+ const struct ustr *ocu_i)
{
- uint8_t *ocu;
- uint32_t c;
+ const uint8_t *ocu;
uint8_t cmp_id, ocu_len;
- int i;
+ int i, len;
- ocu = ocu_i->u_name;
ocu_len = ocu_i->u_len;
- cmp_id = ocu_i->u_cmpID;
- utf_o->u_len = 0;
-
if (ocu_len == 0) {
memset(utf_o, 0, sizeof(struct ustr));
- utf_o->u_cmpID = 0;
- utf_o->u_len = 0;
return 0;
}
- if ((cmp_id != 8) && (cmp_id != 16)) {
- printk(KERN_ERR "udf: unknown compression code (%d) stri=%s\n",
+ cmp_id = ocu_i->u_cmpID;
+ if (cmp_id != 8 && cmp_id != 16) {
+ memset(utf_o, 0, sizeof(struct ustr));
+ pr_err("unknown compression code (%d) stri=%s\n",
cmp_id, ocu_i->u_name);
return 0;
}
+ ocu = ocu_i->u_name;
+ utf_o->u_len = 0;
for (i = 0; (i < ocu_len) && (utf_o->u_len <= (UDF_NAME_LEN - 3));) {
/* Expand OSTA compressed Unicode to Unicode */
- c = ocu[i++];
+ uint32_t c = ocu[i++];
if (cmp_id == 16)
c = (c << 8) | ocu[i++];
- utf_o->u_len += nls->uni2char(c, &utf_o->u_name[utf_o->u_len],
- UDF_NAME_LEN - utf_o->u_len);
+ len = nls->uni2char(c, &utf_o->u_name[utf_o->u_len],
+ UDF_NAME_LEN - utf_o->u_len);
+ /* Valid character? */
+ if (len >= 0)
+ utf_o->u_len += len;
+ else
+ utf_o->u_name[utf_o->u_len++] = '?';
}
utf_o->u_cmpID = 8;
@@ -298,7 +296,8 @@ static int udf_CS0toNLS(struct nls_table *nls, struct ustr *utf_o,
static int udf_NLStoCS0(struct nls_table *nls, dstring *ocu, struct ustr *uni,
int length)
{
- unsigned len, i, max_val;
+ int len;
+ unsigned i, max_val;
uint16_t uni_char;
int u_len;
@@ -310,8 +309,13 @@ try_again:
u_len = 0U;
for (i = 0U; i < uni->u_len; i++) {
len = nls->char2uni(&uni->u_name[i], uni->u_len - i, &uni_char);
- if (len <= 0)
+ if (!len)
continue;
+ /* Invalid character, deal with it */
+ if (len < 0) {
+ len = 1;
+ uni_char = '?';
+ }
if (uni_char > max_val) {
max_val = 0xffffU;
@@ -332,34 +336,43 @@ try_again:
int udf_get_filename(struct super_block *sb, uint8_t *sname, uint8_t *dname,
int flen)
{
- struct ustr filename, unifilename;
- int len;
+ struct ustr *filename, *unifilename;
+ int len = 0;
- if (udf_build_ustr_exact(&unifilename, sname, flen))
+ filename = kmalloc(sizeof(struct ustr), GFP_NOFS);
+ if (!filename)
return 0;
+ unifilename = kmalloc(sizeof(struct ustr), GFP_NOFS);
+ if (!unifilename)
+ goto out1;
+
+ if (udf_build_ustr_exact(unifilename, sname, flen))
+ goto out2;
+
if (UDF_QUERY_FLAG(sb, UDF_FLAG_UTF8)) {
- if (!udf_CS0toUTF8(&filename, &unifilename)) {
+ if (!udf_CS0toUTF8(filename, unifilename)) {
udf_debug("Failed in udf_get_filename: sname = %s\n",
sname);
- return 0;
+ goto out2;
}
} else if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP)) {
- if (!udf_CS0toNLS(UDF_SB(sb)->s_nls_map, &filename,
- &unifilename)) {
+ if (!udf_CS0toNLS(UDF_SB(sb)->s_nls_map, filename,
+ unifilename)) {
udf_debug("Failed in udf_get_filename: sname = %s\n",
sname);
- return 0;
+ goto out2;
}
} else
- return 0;
-
- len = udf_translate_to_linux(dname, filename.u_name, filename.u_len,
- unifilename.u_name, unifilename.u_len);
- if (len)
- return len;
-
- return 0;
+ goto out2;
+
+ len = udf_translate_to_linux(dname, filename->u_name, filename->u_len,
+ unifilename->u_name, unifilename->u_len);
+out2:
+ kfree(unifilename);
+out1:
+ kfree(filename);
+ return len;
}
int udf_put_filename(struct super_block *sb, const uint8_t *sname,
@@ -463,7 +476,7 @@ static int udf_translate_to_linux(uint8_t *newName, uint8_t *udfName,
} else if (newIndex > 250)
newIndex = 250;
newName[newIndex++] = CRC_MARK;
- valueCRC = udf_crc(fidName, fidNameLen, 0);
+ valueCRC = crc_itu_t(0, fidName, fidNameLen);
newName[newIndex++] = hexChar[(valueCRC & 0xf000) >> 12];
newName[newIndex++] = hexChar[(valueCRC & 0x0f00) >> 8];
newName[newIndex++] = hexChar[(valueCRC & 0x00f0) >> 4];
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 12:07:21 +0000