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Diffstat (limited to 'fs/udf/super.c')
-rw-r--r--fs/udf/super.c1061
1 files changed, 611 insertions, 450 deletions
diff --git a/fs/udf/super.c b/fs/udf/super.c
index 4a5c7c61836..3286db047a4 100644
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -48,7 +48,6 @@
#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>
@@ -57,6 +56,7 @@
#include <linux/seq_file.h>
#include <linux/bitmap.h>
#include <linux/crc-itu-t.h>
+#include <linux/log2.h>
#include <asm/byteorder.h>
#include "udf_sb.h"
@@ -76,7 +76,10 @@
#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);
@@ -92,17 +95,27 @@ 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 void udf_error(struct super_block *sb, const char *function,
- const char *fmt, ...);
+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]);
}
@@ -120,6 +133,7 @@ static struct file_system_type udf_fstype = {
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("udf");
static struct kmem_cache *udf_inode_cachep;
@@ -135,15 +149,24 @@ 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 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;
@@ -152,7 +175,7 @@ static void init_once(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),
@@ -166,6 +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);
}
@@ -193,11 +221,11 @@ struct udf_options {
unsigned int fileset;
unsigned int rootdir;
unsigned int flags;
- mode_t umask;
- gid_t gid;
- uid_t uid;
- mode_t fmode;
- mode_t dmode;
+ umode_t umask;
+ kgid_t gid;
+ kuid_t uid;
+ umode_t fmode;
+ umode_t dmode;
struct nls_table *nls_map;
};
@@ -237,9 +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, __func__,
- "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;
}
@@ -248,9 +275,67 @@ 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 super_block *sb = mnt->mnt_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 = root->d_sb;
struct udf_sb_info *sbi = UDF_SB(sb);
if (!UDF_QUERY_FLAG(sb, UDF_FLAG_STRICT))
@@ -274,15 +359,15 @@ 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=%o", sbi->s_fmode);
+ seq_printf(seq, ",mode=%ho", sbi->s_fmode);
if (sbi->s_dmode != UDF_INVALID_MODE)
- seq_printf(seq, ",dmode=%o", sbi->s_dmode);
+ 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))
@@ -420,6 +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;
@@ -431,7 +517,10 @@ static int udf_parse_options(char *options, struct udf_options *uopt,
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:
@@ -455,13 +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:
@@ -543,8 +636,7 @@ static int udf_parse_options(char *options, struct udf_options *uopt,
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;
}
}
@@ -556,6 +648,14 @@ 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;
@@ -567,19 +667,14 @@ static int udf_remount_fs(struct super_block *sb, int *flags, char *options)
if (!udf_parse_options(options, &uopt, true))
return -EINVAL;
- lock_kernel();
+ 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;
sbi->s_fmode = uopt.fmode;
sbi->s_dmode = uopt.dmode;
-
- 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;
- }
+ write_unlock(&sbi->s_cred_lock);
if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY))
goto out_unlock;
@@ -590,7 +685,6 @@ static int udf_remount_fs(struct super_block *sb, int *flags, char *options)
udf_open_lvid(sb);
out_unlock:
- unlock_kernel();
return error;
}
@@ -599,7 +693,7 @@ out_unlock:
static loff_t udf_check_vsd(struct super_block *sb)
{
struct volStructDesc *vsd = NULL;
- loff_t sector = 32768;
+ loff_t sector = VSD_FIRST_SECTOR_OFFSET;
int sectorsize;
struct buffer_head *bh = NULL;
int nsr02 = 0;
@@ -617,8 +711,18 @@ static loff_t udf_check_vsd(struct super_block *sb)
udf_debug("Starting at sector %u (%ld byte sectors)\n",
(unsigned int)(sector >> sb->s_blocksize_bits),
sb->s_blocksize);
- /* Process the sequence (if applicable) */
- for (; !nsr02 && !nsr03; sector += sectorsize) {
+ /* 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)
@@ -628,30 +732,23 @@ static loff_t udf_check_vsd(struct super_block *sb)
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)) {
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",
@@ -671,6 +768,17 @@ static loff_t udf_check_vsd(struct super_block *sb)
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);
}
@@ -678,7 +786,8 @@ static loff_t udf_check_vsd(struct super_block *sb)
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;
@@ -774,27 +883,38 @@ static int udf_find_fileset(struct super_block *sb,
return 1;
}
+/*
+ * 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;
struct ustr *instr, *outstr;
struct buffer_head *bh;
uint16_t ident;
- int ret = 1;
+ int ret = -ENOMEM;
instr = kmalloc(sizeof(struct ustr), GFP_NOFS);
if (!instr)
- return 1;
+ return -ENOMEM;
outstr = kmalloc(sizeof(struct ustr), GFP_NOFS);
if (!outstr)
goto out1;
bh = udf_read_tagged(sb, block, block, &ident);
- if (!bh)
+ if (!bh) {
+ ret = -EAGAIN;
goto out2;
+ }
- BUG_ON(ident != TAG_IDENT_PVD);
+ if (ident != TAG_IDENT_PVD) {
+ ret = -EIO;
+ goto out_bh;
+ }
pvoldesc = (struct primaryVolDesc *)bh->b_data;
@@ -802,8 +922,7 @@ static int udf_load_pvoldesc(struct super_block *sb, sector_t block)
pvoldesc->recordingDateAndTime)) {
#ifdef UDFFS_DEBUG
struct timestamp *ts = &pvoldesc->recordingDateAndTime;
- udf_debug("recording time %04u/%02u/%02u"
- " %02u:%02u (%x)\n",
+ 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
@@ -814,15 +933,16 @@ static int udf_load_pvoldesc(struct super_block *sb, sector_t block)
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);
- brelse(bh);
ret = 0;
+out_bh:
+ brelse(bh);
out2:
kfree(outstr);
out1:
@@ -830,64 +950,57 @@ out1:
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;
- int fe_error = 0;
map = &sbi->s_partmaps[partition];
mdata = &map->s_type_specific.s_metadata;
/* metadata address */
- addr.logicalBlockNum = mdata->s_meta_file_loc;
- addr.partitionReferenceNum = map->s_partition_num;
-
udf_debug("Metadata file location: block = %d part = %d\n",
- addr.logicalBlockNum, addr.partitionReferenceNum);
+ mdata->s_meta_file_loc, map->s_partition_num);
- mdata->s_metadata_fe = udf_iget(sb, &addr);
+ 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) {
- udf_warning(sb, __func__, "metadata inode efe not found, "
- "will try mirror inode.");
- fe_error = 1;
- } else if (UDF_I(mdata->s_metadata_fe)->i_alloc_type !=
- ICBTAG_FLAG_AD_SHORT) {
- udf_warning(sb, __func__, "metadata inode efe does not have "
- "short allocation descriptors!");
- fe_error = 1;
- iput(mdata->s_metadata_fe);
- 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);
- /* mirror file entry */
- addr.logicalBlockNum = mdata->s_mirror_file_loc;
- addr.partitionReferenceNum = map->s_partition_num;
+ mdata->s_mirror_fe = udf_find_metadata_inode_efe(sb,
+ mdata->s_mirror_file_loc, map->s_partition_num);
- udf_debug("Mirror metadata file location: block = %d part = %d\n",
- addr.logicalBlockNum, addr.partitionReferenceNum);
-
- mdata->s_mirror_fe = udf_iget(sb, &addr);
-
- if (mdata->s_mirror_fe == NULL) {
- if (fe_error) {
- udf_error(sb, __func__, "mirror inode efe not found "
- "and metadata inode is missing too, exiting...");
- goto error_exit;
- } else
- udf_warning(sb, __func__, "mirror inode efe not found,"
- " but metadata inode is OK");
- } else if (UDF_I(mdata->s_mirror_fe)->i_alloc_type !=
- ICBTAG_FLAG_AD_SHORT) {
- udf_warning(sb, __func__, "mirror inode efe does not have "
- "short allocation descriptors!");
- iput(mdata->s_mirror_fe);
- mdata->s_mirror_fe = NULL;
- if (fe_error)
- goto error_exit;
+ if (mdata->s_mirror_fe == NULL) {
+ udf_err(sb, "Both metadata and mirror metadata inode efe can not found\n");
+ return -EIO;
+ }
}
/*
@@ -900,29 +1013,21 @@ static int udf_load_metadata_files(struct super_block *sb, int partition)
addr.partitionReferenceNum = map->s_partition_num;
udf_debug("Bitmap file location: block = %d part = %d\n",
- addr.logicalBlockNum, addr.partitionReferenceNum);
+ 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_warning(sb, __func__, "bitmap inode efe "
- "not found but it's ok since the disc"
- " is mounted read-only");
+ udf_warn(sb, "bitmap inode efe not found but it's ok since the disc is mounted read-only\n");
else {
- udf_error(sb, __func__, "bitmap inode efe not "
- "found and attempted read-write mount");
- goto error_exit;
+ 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;
-
-error_exit:
- return 1;
}
static void udf_load_fileset(struct super_block *sb, struct buffer_head *bh,
@@ -959,19 +1064,13 @@ 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, __func__,
- "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;
}
@@ -997,10 +1096,9 @@ static int udf_fill_partdesc_info(struct super_block *sb,
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);
+ 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))
@@ -1017,26 +1115,24 @@ static int udf_fill_partdesc_info(struct super_block *sb,
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 1;
+ 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);
+ 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 1;
+ return -ENOMEM;
map->s_uspace.s_bitmap = bitmap;
- 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", p_index,
- bitmap->s_extPosition);
+ udf_debug("unallocSpaceBitmap (part %d) @ %d\n",
+ p_index, bitmap->s_extPosition);
}
if (phd->partitionIntegrityTable.extLength)
@@ -1052,27 +1148,25 @@ static int udf_fill_partdesc_info(struct super_block *sb,
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 1;
+ 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);
+ 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 1;
+ return -ENOMEM;
map->s_fspace.s_bitmap = bitmap;
- 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", p_index,
- bitmap->s_extPosition);
+ udf_debug("freedSpaceBitmap (part %d) @ %d\n",
+ p_index, bitmap->s_extPosition);
}
return 0;
}
@@ -1112,15 +1206,13 @@ static int udf_load_vat(struct super_block *sb, int p_index, int type1_index)
udf_find_vat_block(sb, p_index, type1_index, sbi->s_last_block);
if (!sbi->s_vat_inode &&
sbi->s_last_block != blocks - 1) {
- printk(KERN_NOTICE "UDF-fs: 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);
+ 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 1;
+ return -EIO;
if (map->s_partition_type == UDF_VIRTUAL_MAP15) {
map->s_type_specific.s_virtual.s_start_offset = 0;
@@ -1132,7 +1224,7 @@ static int udf_load_vat(struct super_block *sb, int p_index, int type1_index)
pos = udf_block_map(sbi->s_vat_inode, 0);
bh = sb_bread(sb, pos);
if (!bh)
- return 1;
+ return -EIO;
vat20 = (struct virtualAllocationTable20 *)bh->b_data;
} else {
vat20 = (struct virtualAllocationTable20 *)
@@ -1150,6 +1242,12 @@ static int udf_load_vat(struct super_block *sb, int p_index, int type1_index)
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;
@@ -1159,13 +1257,15 @@ static int udf_load_partdesc(struct super_block *sb, sector_t block)
int i, type1_idx;
uint16_t partitionNumber;
uint16_t ident;
- int ret = 0;
+ int ret;
bh = udf_read_tagged(sb, block, block, &ident);
if (!bh)
- return 1;
- if (ident != TAG_IDENT_PD)
+ return -EAGAIN;
+ if (ident != TAG_IDENT_PD) {
+ ret = 0;
goto out_bh;
+ }
p = (struct partitionDesc *)bh->b_data;
partitionNumber = le16_to_cpu(p->partitionNumber);
@@ -1184,16 +1284,22 @@ static int udf_load_partdesc(struct super_block *sb, sector_t block)
if (i >= sbi->s_partitions) {
udf_debug("Partition (%d) not found in partition map\n",
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];
@@ -1204,66 +1310,124 @@ static int udf_load_partdesc(struct super_block *sb, sector_t block)
break;
}
- if (i >= sbi->s_partitions)
+ if (i >= sbi->s_partitions) {
+ ret = 0;
goto out_bh;
+ }
ret = udf_fill_partdesc_info(sb, p, i);
- if (ret)
+ if (ret < 0)
goto out_bh;
if (map->s_partition_type == UDF_METADATA_MAP25) {
ret = udf_load_metadata_files(sb, i);
- if (ret) {
- printk(KERN_ERR "UDF-fs: error loading MetaData "
- "partition map %d\n", i);
+ if (ret < 0) {
+ udf_err(sb, "error loading MetaData partition map %d\n",
+ i);
goto out_bh;
}
} else {
- ret = udf_load_vat(sb, i, type1_idx);
- if (ret)
- goto out_bh;
/*
- * Mark filesystem read-only if we have a partition with
- * virtual map since we don't handle writing to it (we
- * overwrite blocks instead of relocating them).
+ * If we have a partition with virtual map, we don't handle
+ * writing to it (we overwrite blocks instead of relocating
+ * them).
*/
- sb->s_flags |= MS_RDONLY;
- printk(KERN_NOTICE "UDF-fs: Filesystem marked read-only "
- "because writing to pseudooverwrite partition is "
- "not implemented.\n");
+ 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, 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;
- int ret = 0;
+ unsigned int table_len;
+ int ret;
bh = udf_read_tagged(sb, block, block, &ident);
if (!bh)
- return 1;
+ return -EAGAIN;
BUG_ON(ident != TAG_IDENT_LVD);
lvd = (struct logicalVolDesc *)bh->b_data;
-
- i = udf_sb_alloc_partition_maps(sb, le32_to_cpu(lvd->numPartitionMaps));
- if (i != 0) {
- ret = i;
+ 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;
}
+ 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 *)
@@ -1298,38 +1462,10 @@ static int udf_load_logicalvol(struct super_block *sb, sector_t block,
} else if (!strncmp(upm2->partIdent.ident,
UDF_ID_SPARABLE,
strlen(UDF_ID_SPARABLE))) {
- uint32_t loc;
- 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)
- continue;
-
- 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))) {
@@ -1338,9 +1474,8 @@ static int udf_load_logicalvol(struct super_block *sb, sector_t block,
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);
+ 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;
@@ -1355,25 +1490,24 @@ static int udf_load_logicalvol(struct super_block *sb, sector_t block,
le32_to_cpu(mdm->allocUnitSize);
mdata->s_align_unit_size =
le16_to_cpu(mdm->alignUnitSize);
- mdata->s_dup_md_flag =
- mdm->flags & 0x01;
+ 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)[0])));
+ le16_to_cpu(*(__le16 *)
+ mdm->partIdent.identSuffix));
udf_debug("Metadata part num=%d\n",
- le16_to_cpu(mdm->partitionNum));
+ le16_to_cpu(mdm->partitionNum));
udf_debug("Metadata part alloc unit size=%d\n",
- le32_to_cpu(mdm->allocUnitSize));
+ le32_to_cpu(mdm->allocUnitSize));
udf_debug("Metadata file loc=%d\n",
- le32_to_cpu(mdm->metadataFileLoc));
+ le32_to_cpu(mdm->metadataFileLoc));
udf_debug("Mirror file loc=%d\n",
- le32_to_cpu(mdm->metadataMirrorFileLoc));
+ le32_to_cpu(mdm->metadataMirrorFileLoc));
udf_debug("Bitmap file loc=%d\n",
- le32_to_cpu(mdm->metadataBitmapFileLoc));
- udf_debug("Duplicate Flag: %d %d\n",
- mdata->s_dup_md_flag, mdm->flags);
+ 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);
@@ -1383,21 +1517,20 @@ static int udf_load_logicalvol(struct super_block *sb, sector_t block,
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) {
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));
-
+ ret = 0;
out_bh:
brelse(bh);
return ret;
@@ -1435,22 +1568,18 @@ static void udf_load_logicalvolint(struct super_block *sb, struct kernel_extent_
}
/*
- * udf_process_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
*
- * PURPOSE
- * Process a main/reserve volume descriptor sequence.
- *
- * 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 noinline int udf_process_sequence(struct super_block *sb, long block,
- long lastblock, struct 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];
@@ -1461,6 +1590,7 @@ static noinline int udf_process_sequence(struct super_block *sb, long block,
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);
@@ -1472,10 +1602,10 @@ static noinline int udf_process_sequence(struct super_block *sb, long block,
bh = udf_read_tagged(sb, block, block, &ident);
if (!bh) {
- printk(KERN_ERR "udf: Block %Lu of volume descriptor "
- "sequence is corrupted or we could not read "
- "it.\n", (unsigned long long)block);
- return 1;
+ 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) */
@@ -1547,15 +1677,20 @@ static noinline int udf_process_sequence(struct super_block *sb, long block,
* in a suitable order
*/
if (!vds[VDS_POS_PRIMARY_VOL_DESC].block) {
- printk(KERN_ERR "udf: Primary Volume Descriptor not found!\n");
- return 1;
+ 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 (udf_load_pvoldesc(sb, vds[VDS_POS_PRIMARY_VOL_DESC].block))
- return 1;
-
- if (vds[VDS_POS_LOGICAL_VOL_DESC].block && udf_load_logicalvol(sb,
- vds[VDS_POS_LOGICAL_VOL_DESC].block, fileset))
- return 1;
if (vds[VDS_POS_PARTITION_DESC].block) {
/*
@@ -1564,19 +1699,27 @@ static noinline int udf_process_sequence(struct super_block *sb, long block,
*/
for (block = vds[VDS_POS_PARTITION_DESC].block;
block < vds[VDS_POS_TERMINATING_DESC].block;
- block++)
- if (udf_load_partdesc(sb, block))
- return 1;
+ block++) {
+ ret = udf_load_partdesc(sb, block);
+ if (ret < 0)
+ return ret;
+ }
}
return 0;
}
+/*
+ * Load Volume Descriptor Sequence described by anchor in bh
+ *
+ * Returns <0 on error, 0 on success
+ */
static int udf_load_sequence(struct super_block *sb, struct buffer_head *bh,
struct kernel_lb_addr *fileset)
{
struct anchorVolDescPtr *anchor;
- long main_s, main_e, reserve_s, reserve_e;
+ sector_t main_s, main_e, reserve_s, reserve_e;
+ int ret;
anchor = (struct anchorVolDescPtr *)bh->b_data;
@@ -1594,14 +1737,26 @@ static int udf_load_sequence(struct super_block *sb, struct buffer_head *bh,
/* Process the main & reserve sequences */
/* responsible for finding the PartitionDesc(s) */
- if (!udf_process_sequence(sb, main_s, main_e, fileset))
- return 1;
- return !udf_process_sequence(sb, reserve_s, reserve_e, fileset);
+ 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;
}
/*
* 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)
@@ -1613,33 +1768,40 @@ static int udf_check_anchor_block(struct super_block *sb, sector_t block,
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 0;
+ return -EAGAIN;
bh = udf_read_tagged(sb, block, block, &ident);
if (!bh)
- return 0;
+ return -EAGAIN;
if (ident != TAG_IDENT_AVDP) {
brelse(bh);
- return 0;
+ return -EAGAIN;
}
ret = udf_load_sequence(sb, bh, fileset);
brelse(bh);
return ret;
}
-/* Search for an anchor volume descriptor pointer */
-static sector_t udf_scan_anchors(struct super_block *sb, sector_t lastblock,
- struct kernel_lb_addr *fileset)
+/*
+ * 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) {
- if (udf_check_anchor_block(sb, sbi->s_anchor, fileset))
- return lastblock;
+ ret = udf_check_anchor_block(sb, sbi->s_anchor, fileset);
+ if (ret != -EAGAIN)
+ return ret;
}
/*
* according to spec, anchor is in either:
@@ -1648,39 +1810,46 @@ static sector_t udf_scan_anchors(struct super_block *sb, sector_t lastblock,
* lastblock
* however, if the disc isn't closed, it could be 512.
*/
- if (udf_check_anchor_block(sb, sbi->s_session + 256, fileset))
- return lastblock;
+ 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;
+ 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;
- if (udf_check_anchor_block(sb, last[i], fileset))
- return last[i];
+ ret = udf_check_anchor_block(sb, last[i], fileset);
+ if (ret != -EAGAIN) {
+ if (!ret)
+ *lastblock = last[i];
+ return ret;
+ }
if (last[i] < 256)
continue;
- if (udf_check_anchor_block(sb, last[i] - 256, fileset))
- return last[i];
+ ret = udf_check_anchor_block(sb, last[i] - 256, fileset);
+ if (ret != -EAGAIN) {
+ if (!ret)
+ *lastblock = last[i];
+ return ret;
+ }
}
/* Finally try block 512 in case media is open */
- if (udf_check_anchor_block(sb, sbi->s_session + 512, fileset))
- return last[0];
- return 0;
+ return udf_check_anchor_block(sb, sbi->s_session + 512, fileset);
}
/*
@@ -1688,54 +1857,59 @@ static sector_t udf_scan_anchors(struct super_block *sb, sector_t lastblock,
* area specified by it. The function expects sbi->s_lastblock to be the last
* block on the media.
*
- * Return 1 if ok, 0 if not found.
- *
+ * 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)
{
- sector_t lastblock;
struct udf_sb_info *sbi = UDF_SB(sb);
+ sector_t lastblock = sbi->s_last_block;
+ int ret;
- lastblock = udf_scan_anchors(sb, sbi->s_last_block, fileset);
- if (lastblock)
+ ret = udf_scan_anchors(sb, &lastblock, fileset);
+ if (ret != -EAGAIN)
goto out;
/* 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 */
- lastblock = udf_scan_anchors(sb,
- udf_variable_to_fixed(sbi->s_last_block),
- fileset);
- if (lastblock)
+ ret = udf_scan_anchors(sb, &lastblock, fileset);
+ if (ret != -EAGAIN)
goto out;
+ lastblock = sbi->s_last_block;
/* Secondly, we try with converted number of the last block */
- lastblock = udf_scan_anchors(sb, sbi->s_last_block, fileset);
- if (!lastblock) {
+ ret = udf_scan_anchors(sb, &lastblock, fileset);
+ if (ret < 0) {
/* VARCONV didn't help. Clear it. */
UDF_CLEAR_FLAG(sb, UDF_FLAG_VARCONV);
- return 0;
}
out:
- sbi->s_last_block = lastblock;
- return 1;
+ if (ret == 0)
+ sbi->s_last_block = lastblock;
+ return ret;
}
/*
* Check Volume Structure Descriptor, find Anchor block and load Volume
- * Descriptor Sequence
+ * 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 (!sb_set_blocksize(sb, uopt->blocksize)) {
if (!silent)
- printk(KERN_WARNING "UDF-fs: Bad block size\n");
- return 0;
+ udf_warn(sb, "Bad block size\n");
+ return -EINVAL;
}
sbi->s_last_block = uopt->lastblock;
if (!uopt->novrs) {
@@ -1743,12 +1917,13 @@ static int udf_load_vrs(struct super_block *sb, struct udf_options *uopt,
nsr_off = udf_check_vsd(sb);
if (!nsr_off) {
if (!silent)
- printk(KERN_WARNING "UDF-fs: No VRS found\n");
+ udf_warn(sb, "No VRS found\n");
return 0;
}
if (nsr_off == -1)
- udf_debug("Failed to read byte 32768. Assuming open "
- "disc. Skipping validity check\n");
+ 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 {
@@ -1757,12 +1932,13 @@ static int udf_load_vrs(struct super_block *sb, struct udf_options *uopt,
/* Look for anchor block and load Volume Descriptor Sequence */
sbi->s_anchor = uopt->anchor;
- if (!udf_find_anchor(sb, fileset)) {
- if (!silent)
- printk(KERN_WARNING "UDF-fs: No anchor found\n");
- return 0;
+ ret = udf_find_anchor(sb, fileset);
+ if (ret < 0) {
+ if (!silent && ret == -EAGAIN)
+ udf_warn(sb, "No anchor found\n");
+ return ret;
}
- return 1;
+ return 0;
}
static void udf_open_lvid(struct super_block *sb)
@@ -1775,8 +1951,11 @@ static void udf_open_lvid(struct super_block *sb)
if (!bh)
return;
lvid = (struct logicalVolIntegrityDesc *)bh->b_data;
- lvidiu = udf_sb_lvidiu(sbi);
+ lvidiu = udf_sb_lvidiu(sb);
+ if (!lvidiu)
+ return;
+ 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,
@@ -1790,6 +1969,9 @@ static void udf_open_lvid(struct super_block *sb)
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)
@@ -1801,9 +1983,12 @@ static void udf_close_lvid(struct super_block *sb)
if (!bh)
return;
-
lvid = (struct logicalVolIntegrityDesc *)bh->b_data;
- lvidiu = udf_sb_lvidiu(sbi);
+ lvidiu = udf_sb_lvidiu(sb);
+ if (!lvidiu)
+ return;
+
+ 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);
@@ -1820,79 +2005,64 @@ static void udf_close_lvid(struct super_block *sb)
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);
-
- 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);
-}
+ struct buffer_head *bh;
+ struct udf_sb_info *sbi = UDF_SB(sb);
+ struct logicalVolIntegrityDesc *lvid;
+ struct logicalVolHeaderDesc *lvhd;
+ u64 uniqueID;
+ u64 ret;
-static void udf_free_partition(struct udf_part_map *map)
-{
- int i;
- struct udf_meta_data *mdata;
+ bh = sbi->s_lvid_bh;
+ if (!bh)
+ return 0;
- 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;
+ lvid = (struct logicalVolIntegrityDesc *)bh->b_data;
+ lvhd = (struct logicalVolHeaderDesc *)lvid->logicalVolContentsUse;
- iput(mdata->s_mirror_fe);
- mdata->s_mirror_fe = NULL;
+ 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);
- iput(mdata->s_bitmap_fe);
- mdata->s_bitmap_fe = NULL;
- }
+ return ret;
}
static int udf_fill_super(struct super_block *sb, void *options, int silent)
{
- int i;
- int ret;
+ int ret = -EINVAL;
struct inode *inode = NULL;
struct udf_options uopt;
struct kernel_lb_addr rootdir, fileset;
struct udf_sb_info *sbi;
- lock_kernel();
-
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) {
- unlock_kernel();
+ if (!sbi)
return -ENOMEM;
- }
sb->s_fs_info = sbi;
@@ -1903,8 +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
@@ -1929,6 +2098,7 @@ static int udf_fill_super(struct super_block *sb, void *options, int silent)
sbi->s_fmode = uopt.fmode;
sbi->s_dmode = uopt.dmode;
sbi->s_nls_map = uopt.nls_map;
+ rwlock_init(&sbi->s_cred_lock);
if (uopt.session == 0xFFFFFFFF)
sbi->s_session = udf_get_last_session(sb);
@@ -1941,7 +2111,6 @@ static int udf_fill_super(struct super_block *sb, void *options, int silent)
sb->s_op = &udf_sb_ops;
sb->s_export_op = &udf_export_ops;
- sb->s_dirt = 0;
sb->s_magic = UDF_SUPER_MAGIC;
sb->s_time_gran = 1000;
@@ -1950,17 +2119,21 @@ static int udf_fill_super(struct super_block *sb, void *options, int silent)
} else {
uopt.blocksize = bdev_logical_block_size(sb->s_bdev);
ret = udf_load_vrs(sb, &uopt, silent, &fileset);
- if (!ret && uopt.blocksize != UDF_DEFAULT_BLOCKSIZE) {
+ if (ret == -EAGAIN && uopt.blocksize != UDF_DEFAULT_BLOCKSIZE) {
if (!silent)
- printk(KERN_NOTICE
- "UDF-fs: Rescanning with blocksize "
- "%d\n", UDF_DEFAULT_BLOCKSIZE);
+ 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) {
- printk(KERN_WARNING "UDF-fs: No partition found (1)\n");
+ if (ret < 0) {
+ if (ret == -EAGAIN) {
+ udf_warn(sb, "No partition found (1)\n");
+ ret = -EINVAL;
+ }
goto error_out;
}
@@ -1968,20 +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;
@@ -1992,28 +2172,30 @@ 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) {
struct timestamp ts;
udf_time_to_disk_stamp(&ts, sbi->s_record_time);
- udf_info("UDF: Mounting volume '%s', "
- "timestamp %04u/%02u/%02u %02u:%02u (%x)\n",
- sbi->s_volume_ident, le16_to_cpu(ts.year), ts.month, ts.day,
+ 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))
@@ -2024,29 +2206,26 @@ static int udf_fill_super(struct super_block *sb, void *options, int silent)
/* perhaps it's not extensible enough, but for now ... */
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;
- unlock_kernel();
+ 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)
- for (i = 0; i < sbi->s_partitions; i++)
- udf_free_partition(&sbi->s_partmaps[i]);
#ifdef CONFIG_UDF_NLS
if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP))
unload_nls(sbi->s_nls_map);
@@ -2054,57 +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;
- unlock_kernel();
- return -EINVAL;
+ return ret;
}
-static 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);
}
static void udf_put_super(struct super_block *sb)
{
- int i;
struct udf_sb_info *sbi;
sbi = UDF_SB(sb);
- lock_kernel();
-
if (sbi->s_vat_inode)
iput(sbi->s_vat_inode);
- if (sbi->s_partitions)
- for (i = 0; i < sbi->s_partitions; i++)
- udf_free_partition(&sbi->s_partmaps[i]);
#ifdef CONFIG_UDF_NLS
if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP))
unload_nls(sbi->s_nls_map);
@@ -2112,11 +2287,9 @@ 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;
-
- unlock_kernel();
}
static int udf_sync_fs(struct super_block *sb, int wait)
@@ -2130,7 +2303,6 @@ static int udf_sync_fs(struct super_block *sb, int wait)
* the buffer for IO
*/
mark_buffer_dirty(sbi->s_lvid_bh);
- sb->s_dirt = 0;
sbi->s_lvid_dirty = 0;
}
mutex_unlock(&sbi->s_alloc_mutex);
@@ -2145,11 +2317,7 @@ static int udf_statfs(struct dentry *dentry, struct kstatfs *buf)
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;
@@ -2179,18 +2347,16 @@ static unsigned int udf_count_free_bitmap(struct super_block *sb,
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);
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;
}
@@ -2217,10 +2383,7 @@ static unsigned int udf_count_free_bitmap(struct super_block *sb,
}
}
brelse(bh);
-
out:
- unlock_kernel();
-
return accum;
}
@@ -2233,8 +2396,7 @@ static unsigned int udf_count_free_table(struct super_block *sb,
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;
@@ -2243,8 +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;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-05 00:25:24 +0000