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-rw-r--r--fs/ext2/acl.c256
-rw-r--r--fs/ext2/acl.h11
-rw-r--r--fs/ext2/balloc.c82
-rw-r--r--fs/ext2/dir.c77
-rw-r--r--fs/ext2/ext2.h663
-rw-r--r--fs/ext2/file.c25
-rw-r--r--fs/ext2/ialloc.c62
-rw-r--r--fs/ext2/inode.c295
-rw-r--r--fs/ext2/ioctl.c42
-rw-r--r--fs/ext2/namei.c135
-rw-r--r--fs/ext2/super.c300
-rw-r--r--fs/ext2/symlink.c2
-rw-r--r--fs/ext2/xattr.c79
-rw-r--r--fs/ext2/xattr.h16
-rw-r--r--fs/ext2/xattr_security.c40
-rw-r--r--fs/ext2/xattr_trusted.c8
-rw-r--r--fs/ext2/xattr_user.c3
-rw-r--r--fs/ext2/xip.c3
18 files changed, 1360 insertions, 739 deletions
diff --git a/fs/ext2/acl.c b/fs/ext2/acl.c
index a99e54318c3..27695e6f4e4 100644
--- a/fs/ext2/acl.c
+++ b/fs/ext2/acl.c
@@ -4,7 +4,6 @@
* Copyright (C) 2001-2003 Andreas Gruenbacher, <agruen@suse.de>
*/
-#include <linux/capability.h>
#include <linux/init.h>
#include <linux/sched.h>
#include <linux/slab.h>
@@ -53,16 +52,23 @@ ext2_acl_from_disk(const void *value, size_t size)
case ACL_OTHER:
value = (char *)value +
sizeof(ext2_acl_entry_short);
- acl->a_entries[n].e_id = ACL_UNDEFINED_ID;
break;
case ACL_USER:
+ value = (char *)value + sizeof(ext2_acl_entry);
+ if ((char *)value > end)
+ goto fail;
+ acl->a_entries[n].e_uid =
+ make_kuid(&init_user_ns,
+ le32_to_cpu(entry->e_id));
+ break;
case ACL_GROUP:
value = (char *)value + sizeof(ext2_acl_entry);
if ((char *)value > end)
goto fail;
- acl->a_entries[n].e_id =
- le32_to_cpu(entry->e_id);
+ acl->a_entries[n].e_gid =
+ make_kgid(&init_user_ns,
+ le32_to_cpu(entry->e_id));
break;
default:
@@ -96,14 +102,19 @@ ext2_acl_to_disk(const struct posix_acl *acl, size_t *size)
ext_acl->a_version = cpu_to_le32(EXT2_ACL_VERSION);
e = (char *)ext_acl + sizeof(ext2_acl_header);
for (n=0; n < acl->a_count; n++) {
+ const struct posix_acl_entry *acl_e = &acl->a_entries[n];
ext2_acl_entry *entry = (ext2_acl_entry *)e;
- entry->e_tag = cpu_to_le16(acl->a_entries[n].e_tag);
- entry->e_perm = cpu_to_le16(acl->a_entries[n].e_perm);
- switch(acl->a_entries[n].e_tag) {
+ entry->e_tag = cpu_to_le16(acl_e->e_tag);
+ entry->e_perm = cpu_to_le16(acl_e->e_perm);
+ switch(acl_e->e_tag) {
case ACL_USER:
+ entry->e_id = cpu_to_le32(
+ from_kuid(&init_user_ns, acl_e->e_uid));
+ e += sizeof(ext2_acl_entry);
+ break;
case ACL_GROUP:
- entry->e_id =
- cpu_to_le32(acl->a_entries[n].e_id);
+ entry->e_id = cpu_to_le32(
+ from_kgid(&init_user_ns, acl_e->e_gid));
e += sizeof(ext2_acl_entry);
break;
@@ -128,7 +139,7 @@ fail:
/*
* inode->i_mutex: don't care
*/
-static struct posix_acl *
+struct posix_acl *
ext2_get_acl(struct inode *inode, int type)
{
int name_index;
@@ -136,13 +147,6 @@ ext2_get_acl(struct inode *inode, int type)
struct posix_acl *acl;
int retval;
- if (!test_opt(inode->i_sb, POSIX_ACL))
- return NULL;
-
- acl = get_cached_acl(inode, type);
- if (acl != ACL_NOT_CACHED)
- return acl;
-
switch (type) {
case ACL_TYPE_ACCESS:
name_index = EXT2_XATTR_INDEX_POSIX_ACL_ACCESS;
@@ -177,29 +181,23 @@ ext2_get_acl(struct inode *inode, int type)
/*
* inode->i_mutex: down
*/
-static int
-ext2_set_acl(struct inode *inode, int type, struct posix_acl *acl)
+int
+ext2_set_acl(struct inode *inode, struct posix_acl *acl, int type)
{
int name_index;
void *value = NULL;
size_t size = 0;
int error;
- if (S_ISLNK(inode->i_mode))
- return -EOPNOTSUPP;
- if (!test_opt(inode->i_sb, POSIX_ACL))
- return 0;
-
switch(type) {
case ACL_TYPE_ACCESS:
name_index = EXT2_XATTR_INDEX_POSIX_ACL_ACCESS;
if (acl) {
- mode_t mode = inode->i_mode;
- error = posix_acl_equiv_mode(acl, &mode);
+ error = posix_acl_equiv_mode(acl, &inode->i_mode);
if (error < 0)
return error;
else {
- inode->i_mode = mode;
+ inode->i_ctime = CURRENT_TIME_SEC;
mark_inode_dirty(inode);
if (error == 0)
acl = NULL;
@@ -230,22 +228,6 @@ ext2_set_acl(struct inode *inode, int type, struct posix_acl *acl)
return error;
}
-int
-ext2_check_acl(struct inode *inode, int mask)
-{
- struct posix_acl *acl = ext2_get_acl(inode, ACL_TYPE_ACCESS);
-
- if (IS_ERR(acl))
- return PTR_ERR(acl);
- if (acl) {
- int error = posix_acl_permission(inode, acl, mask);
- posix_acl_release(acl);
- return error;
- }
-
- return -EAGAIN;
-}
-
/*
* Initialize the ACLs of a new inode. Called from ext2_new_inode.
*
@@ -255,183 +237,21 @@ ext2_check_acl(struct inode *inode, int mask)
int
ext2_init_acl(struct inode *inode, struct inode *dir)
{
- struct posix_acl *acl = NULL;
- int error = 0;
-
- if (!S_ISLNK(inode->i_mode)) {
- if (test_opt(dir->i_sb, POSIX_ACL)) {
- acl = ext2_get_acl(dir, ACL_TYPE_DEFAULT);
- if (IS_ERR(acl))
- return PTR_ERR(acl);
- }
- if (!acl)
- inode->i_mode &= ~current_umask();
- }
- if (test_opt(inode->i_sb, POSIX_ACL) && acl) {
- struct posix_acl *clone;
- mode_t mode;
-
- if (S_ISDIR(inode->i_mode)) {
- error = ext2_set_acl(inode, ACL_TYPE_DEFAULT, acl);
- if (error)
- goto cleanup;
- }
- clone = posix_acl_clone(acl, GFP_KERNEL);
- error = -ENOMEM;
- if (!clone)
- goto cleanup;
- mode = inode->i_mode;
- error = posix_acl_create_masq(clone, &mode);
- if (error >= 0) {
- inode->i_mode = mode;
- if (error > 0) {
- /* This is an extended ACL */
- error = ext2_set_acl(inode,
- ACL_TYPE_ACCESS, clone);
- }
- }
- posix_acl_release(clone);
- }
-cleanup:
- posix_acl_release(acl);
- return error;
-}
-
-/*
- * Does chmod for an inode that may have an Access Control List. The
- * inode->i_mode field must be updated to the desired value by the caller
- * before calling this function.
- * Returns 0 on success, or a negative error number.
- *
- * We change the ACL rather than storing some ACL entries in the file
- * mode permission bits (which would be more efficient), because that
- * would break once additional permissions (like ACL_APPEND, ACL_DELETE
- * for directories) are added. There are no more bits available in the
- * file mode.
- *
- * inode->i_mutex: down
- */
-int
-ext2_acl_chmod(struct inode *inode)
-{
- struct posix_acl *acl, *clone;
- int error;
-
- if (!test_opt(inode->i_sb, POSIX_ACL))
- return 0;
- if (S_ISLNK(inode->i_mode))
- return -EOPNOTSUPP;
- acl = ext2_get_acl(inode, ACL_TYPE_ACCESS);
- if (IS_ERR(acl) || !acl)
- return PTR_ERR(acl);
- clone = posix_acl_clone(acl, GFP_KERNEL);
- posix_acl_release(acl);
- if (!clone)
- return -ENOMEM;
- error = posix_acl_chmod_masq(clone, inode->i_mode);
- if (!error)
- error = ext2_set_acl(inode, ACL_TYPE_ACCESS, clone);
- posix_acl_release(clone);
- return error;
-}
-
-/*
- * Extended attribut handlers
- */
-static size_t
-ext2_xattr_list_acl_access(struct dentry *dentry, char *list, size_t list_size,
- const char *name, size_t name_len, int type)
-{
- const size_t size = sizeof(POSIX_ACL_XATTR_ACCESS);
-
- if (!test_opt(dentry->d_sb, POSIX_ACL))
- return 0;
- if (list && size <= list_size)
- memcpy(list, POSIX_ACL_XATTR_ACCESS, size);
- return size;
-}
-
-static size_t
-ext2_xattr_list_acl_default(struct dentry *dentry, char *list, size_t list_size,
- const char *name, size_t name_len, int type)
-{
- const size_t size = sizeof(POSIX_ACL_XATTR_DEFAULT);
-
- if (!test_opt(dentry->d_sb, POSIX_ACL))
- return 0;
- if (list && size <= list_size)
- memcpy(list, POSIX_ACL_XATTR_DEFAULT, size);
- return size;
-}
-
-static int
-ext2_xattr_get_acl(struct dentry *dentry, const char *name, void *buffer,
- size_t size, int type)
-{
- struct posix_acl *acl;
- int error;
-
- if (strcmp(name, "") != 0)
- return -EINVAL;
- if (!test_opt(dentry->d_sb, POSIX_ACL))
- return -EOPNOTSUPP;
-
- acl = ext2_get_acl(dentry->d_inode, type);
- if (IS_ERR(acl))
- return PTR_ERR(acl);
- if (acl == NULL)
- return -ENODATA;
- error = posix_acl_to_xattr(acl, buffer, size);
- posix_acl_release(acl);
-
- return error;
-}
-
-static int
-ext2_xattr_set_acl(struct dentry *dentry, const char *name, const void *value,
- size_t size, int flags, int type)
-{
- struct posix_acl *acl;
+ struct posix_acl *default_acl, *acl;
int error;
- if (strcmp(name, "") != 0)
- return -EINVAL;
- if (!test_opt(dentry->d_sb, POSIX_ACL))
- return -EOPNOTSUPP;
- if (!is_owner_or_cap(dentry->d_inode))
- return -EPERM;
-
- if (value) {
- acl = posix_acl_from_xattr(value, size);
- if (IS_ERR(acl))
- return PTR_ERR(acl);
- else if (acl) {
- error = posix_acl_valid(acl);
- if (error)
- goto release_and_out;
- }
- } else
- acl = NULL;
-
- error = ext2_set_acl(dentry->d_inode, type, acl);
+ error = posix_acl_create(dir, &inode->i_mode, &default_acl, &acl);
+ if (error)
+ return error;
-release_and_out:
- posix_acl_release(acl);
+ if (default_acl) {
+ error = ext2_set_acl(inode, default_acl, ACL_TYPE_DEFAULT);
+ posix_acl_release(default_acl);
+ }
+ if (acl) {
+ if (!error)
+ error = ext2_set_acl(inode, acl, ACL_TYPE_ACCESS);
+ posix_acl_release(acl);
+ }
return error;
}
-
-struct xattr_handler ext2_xattr_acl_access_handler = {
- .prefix = POSIX_ACL_XATTR_ACCESS,
- .flags = ACL_TYPE_ACCESS,
- .list = ext2_xattr_list_acl_access,
- .get = ext2_xattr_get_acl,
- .set = ext2_xattr_set_acl,
-};
-
-struct xattr_handler ext2_xattr_acl_default_handler = {
- .prefix = POSIX_ACL_XATTR_DEFAULT,
- .flags = ACL_TYPE_DEFAULT,
- .list = ext2_xattr_list_acl_default,
- .get = ext2_xattr_get_acl,
- .set = ext2_xattr_set_acl,
-};
diff --git a/fs/ext2/acl.h b/fs/ext2/acl.h
index 3ff6cbb9ac4..44937f9fcf3 100644
--- a/fs/ext2/acl.h
+++ b/fs/ext2/acl.h
@@ -54,22 +54,15 @@ static inline int ext2_acl_count(size_t size)
#ifdef CONFIG_EXT2_FS_POSIX_ACL
/* acl.c */
-extern int ext2_check_acl (struct inode *, int);
-extern int ext2_acl_chmod (struct inode *);
+extern struct posix_acl *ext2_get_acl(struct inode *inode, int type);
+extern int ext2_set_acl(struct inode *inode, struct posix_acl *acl, int type);
extern int ext2_init_acl (struct inode *, struct inode *);
#else
#include <linux/sched.h>
-#define ext2_check_acl NULL
#define ext2_get_acl NULL
#define ext2_set_acl NULL
-static inline int
-ext2_acl_chmod (struct inode *inode)
-{
- return 0;
-}
-
static inline int ext2_init_acl (struct inode *inode, struct inode *dir)
{
return 0;
diff --git a/fs/ext2/balloc.c b/fs/ext2/balloc.c
index 7f8d2e5a7ea..9f9992b3792 100644
--- a/fs/ext2/balloc.c
+++ b/fs/ext2/balloc.c
@@ -13,6 +13,7 @@
#include "ext2.h"
#include <linux/quotaops.h>
+#include <linux/slab.h>
#include <linux/sched.h>
#include <linux/buffer_head.h>
#include <linux/capability.h>
@@ -158,16 +159,6 @@ read_block_bitmap(struct super_block *sb, unsigned int block_group)
return bh;
}
-static void release_blocks(struct super_block *sb, int count)
-{
- if (count) {
- struct ext2_sb_info *sbi = EXT2_SB(sb);
-
- percpu_counter_add(&sbi->s_freeblocks_counter, count);
- sb->s_dirt = 1;
- }
-}
-
static void group_adjust_blocks(struct super_block *sb, int group_no,
struct ext2_group_desc *desc, struct buffer_head *bh, int count)
{
@@ -179,7 +170,6 @@ static void group_adjust_blocks(struct super_block *sb, int group_no,
free_blocks = le16_to_cpu(desc->bg_free_blocks_count);
desc->bg_free_blocks_count = cpu_to_le16(free_blocks + count);
spin_unlock(sb_bgl_lock(sbi, group_no));
- sb->s_dirt = 1;
mark_buffer_dirty(bh);
}
}
@@ -420,7 +410,7 @@ static inline int rsv_is_empty(struct ext2_reserve_window *rsv)
void ext2_init_block_alloc_info(struct inode *inode)
{
struct ext2_inode_info *ei = EXT2_I(inode);
- struct ext2_block_alloc_info *block_i = ei->i_block_alloc_info;
+ struct ext2_block_alloc_info *block_i;
struct super_block *sb = inode->i_sb;
block_i = kmalloc(sizeof(*block_i), GFP_NOFS);
@@ -478,9 +468,9 @@ void ext2_discard_reservation(struct inode *inode)
}
/**
- * ext2_free_blocks_sb() -- Free given blocks and update quota and i_blocks
+ * ext2_free_blocks() -- Free given blocks and update quota and i_blocks
* @inode: inode
- * @block: start physcial block to free
+ * @block: start physical block to free
* @count: number of blocks to free
*/
void ext2_free_blocks (struct inode * inode, unsigned long block,
@@ -569,8 +559,11 @@ do_more:
}
error_return:
brelse(bitmap_bh);
- release_blocks(sb, freed);
- vfs_dq_free_block(inode, freed);
+ if (freed) {
+ percpu_counter_add(&sbi->s_freeblocks_counter, freed);
+ dquot_free_block_nodirty(inode, freed);
+ mark_inode_dirty(inode);
+ }
}
/**
@@ -645,10 +638,9 @@ find_next_usable_block(int start, struct buffer_head *bh, int maxblocks)
return here;
}
-/*
+/**
* ext2_try_to_allocate()
* @sb: superblock
- * @handle: handle to this transaction
* @group: given allocation block group
* @bitmap_bh: bufferhead holds the block bitmap
* @grp_goal: given target block within the group
@@ -850,7 +842,7 @@ static int find_next_reservable_window(
rsv_window_remove(sb, my_rsv);
/*
- * Let's book the whole avaliable window for now. We will check the
+ * Let's book the whole available window for now. We will check the
* disk bitmap later and then, if there are free blocks then we adjust
* the window size if it's larger than requested.
* Otherwise, we will remove this node from the tree next time
@@ -1193,8 +1185,9 @@ static int ext2_has_free_blocks(struct ext2_sb_info *sbi)
free_blocks = percpu_counter_read_positive(&sbi->s_freeblocks_counter);
root_blocks = le32_to_cpu(sbi->s_es->s_r_blocks_count);
if (free_blocks < root_blocks + 1 && !capable(CAP_SYS_RESOURCE) &&
- sbi->s_resuid != current_fsuid() &&
- (sbi->s_resgid == 0 || !in_group_p (sbi->s_resgid))) {
+ !uid_eq(sbi->s_resuid, current_fsuid()) &&
+ (gid_eq(sbi->s_resgid, GLOBAL_ROOT_GID) ||
+ !in_group_p (sbi->s_resgid))) {
return 0;
}
return 1;
@@ -1236,19 +1229,17 @@ ext2_fsblk_t ext2_new_blocks(struct inode *inode, ext2_fsblk_t goal,
unsigned short windowsz = 0;
unsigned long ngroups;
unsigned long num = *count;
+ int ret;
*errp = -ENOSPC;
sb = inode->i_sb;
- if (!sb) {
- printk("ext2_new_blocks: nonexistent device");
- return 0;
- }
/*
* Check quota for allocation of this block.
*/
- if (vfs_dq_alloc_block(inode, num)) {
- *errp = -EDQUOT;
+ ret = dquot_alloc_block(inode, num);
+ if (ret) {
+ *errp = ret;
return 0;
}
@@ -1329,6 +1320,12 @@ retry_alloc:
free_blocks = le16_to_cpu(gdp->bg_free_blocks_count);
/*
+ * skip this group (and avoid loading bitmap) if there
+ * are no free blocks
+ */
+ if (!free_blocks)
+ continue;
+ /*
* skip this group if the number of
* free blocks is less than half of the reservation
* window size.
@@ -1349,9 +1346,9 @@ retry_alloc:
goto allocated;
}
/*
- * We may end up a bogus ealier ENOSPC error due to
+ * We may end up a bogus earlier ENOSPC error due to
* filesystem is "full" of reservations, but
- * there maybe indeed free blocks avaliable on disk
+ * there maybe indeed free blocks available on disk
* In this case, we just forget about the reservations
* just do block allocation as without reservations.
*/
@@ -1409,8 +1406,11 @@ allocated:
*errp = 0;
brelse(bitmap_bh);
- vfs_dq_free_block(inode, *count-num);
- *count = num;
+ if (num < *count) {
+ dquot_free_block_nodirty(inode, *count-num);
+ mark_inode_dirty(inode);
+ *count = num;
+ }
return ret_block;
io_error:
@@ -1419,8 +1419,10 @@ out:
/*
* Undo the block allocation
*/
- if (!performed_allocation)
- vfs_dq_free_block(inode, *count);
+ if (!performed_allocation) {
+ dquot_free_block_nodirty(inode, *count);
+ mark_inode_dirty(inode);
+ }
brelse(bitmap_bh);
return 0;
}
@@ -1434,19 +1436,9 @@ ext2_fsblk_t ext2_new_block(struct inode *inode, unsigned long goal, int *errp)
#ifdef EXT2FS_DEBUG
-static const int nibblemap[] = {4, 3, 3, 2, 3, 2, 2, 1, 3, 2, 2, 1, 2, 1, 1, 0};
-
-unsigned long ext2_count_free (struct buffer_head * map, unsigned int numchars)
+unsigned long ext2_count_free(struct buffer_head *map, unsigned int numchars)
{
- unsigned int i;
- unsigned long sum = 0;
-
- if (!map)
- return (0);
- for (i = 0; i < numchars; i++)
- sum += nibblemap[map->b_data[i] & 0xf] +
- nibblemap[(map->b_data[i] >> 4) & 0xf];
- return (sum);
+ return numchars * BITS_PER_BYTE - memweight(map->b_data, numchars);
}
#endif /* EXT2FS_DEBUG */
diff --git a/fs/ext2/dir.c b/fs/ext2/dir.c
index 7516957273e..6e1d4ab09d7 100644
--- a/fs/ext2/dir.c
+++ b/fs/ext2/dir.c
@@ -28,21 +28,30 @@
typedef struct ext2_dir_entry_2 ext2_dirent;
+/*
+ * Tests against MAX_REC_LEN etc were put in place for 64k block
+ * sizes; if that is not possible on this arch, we can skip
+ * those tests and speed things up.
+ */
static inline unsigned ext2_rec_len_from_disk(__le16 dlen)
{
unsigned len = le16_to_cpu(dlen);
+#if (PAGE_CACHE_SIZE >= 65536)
if (len == EXT2_MAX_REC_LEN)
return 1 << 16;
+#endif
return len;
}
static inline __le16 ext2_rec_len_to_disk(unsigned len)
{
+#if (PAGE_CACHE_SIZE >= 65536)
if (len == (1 << 16))
return cpu_to_le16(EXT2_MAX_REC_LEN);
else
BUG_ON(len > (1 << 16));
+#endif
return cpu_to_le16(len);
}
@@ -98,7 +107,7 @@ static int ext2_commit_chunk(struct page *page, loff_t pos, unsigned len)
if (IS_DIRSYNC(dir)) {
err = write_one_page(page, 1);
if (!err)
- err = ext2_sync_inode(dir);
+ err = sync_inode_metadata(dir, 1);
} else {
unlock_page(page);
}
@@ -129,15 +138,15 @@ static void ext2_check_page(struct page *page, int quiet)
p = (ext2_dirent *)(kaddr + offs);
rec_len = ext2_rec_len_from_disk(p->rec_len);
- if (rec_len < EXT2_DIR_REC_LEN(1))
+ if (unlikely(rec_len < EXT2_DIR_REC_LEN(1)))
goto Eshort;
- if (rec_len & 3)
+ if (unlikely(rec_len & 3))
goto Ealign;
- if (rec_len < EXT2_DIR_REC_LEN(p->name_len))
+ if (unlikely(rec_len < EXT2_DIR_REC_LEN(p->name_len)))
goto Enamelen;
- if (((offs + rec_len - 1) ^ offs) & ~(chunk_size-1))
+ if (unlikely(((offs + rec_len - 1) ^ offs) & ~(chunk_size-1)))
goto Espan;
- if (le32_to_cpu(p->inode) > max_inumber)
+ if (unlikely(le32_to_cpu(p->inode) > max_inumber))
goto Einumber;
}
if (offs != limit)
@@ -270,7 +279,7 @@ static unsigned char ext2_type_by_mode[S_IFMT >> S_SHIFT] = {
static inline void ext2_set_de_type(ext2_dirent *de, struct inode *inode)
{
- mode_t mode = inode->i_mode;
+ umode_t mode = inode->i_mode;
if (EXT2_HAS_INCOMPAT_FEATURE(inode->i_sb, EXT2_FEATURE_INCOMPAT_FILETYPE))
de->file_type = ext2_type_by_mode[(mode & S_IFMT)>>S_SHIFT];
else
@@ -278,17 +287,17 @@ static inline void ext2_set_de_type(ext2_dirent *de, struct inode *inode)
}
static int
-ext2_readdir (struct file * filp, void * dirent, filldir_t filldir)
+ext2_readdir(struct file *file, struct dir_context *ctx)
{
- loff_t pos = filp->f_pos;
- struct inode *inode = filp->f_path.dentry->d_inode;
+ loff_t pos = ctx->pos;
+ struct inode *inode = file_inode(file);
struct super_block *sb = inode->i_sb;
unsigned int offset = pos & ~PAGE_CACHE_MASK;
unsigned long n = pos >> PAGE_CACHE_SHIFT;
unsigned long npages = dir_pages(inode);
unsigned chunk_mask = ~(ext2_chunk_size(inode)-1);
unsigned char *types = NULL;
- int need_revalidate = filp->f_version != inode->i_version;
+ int need_revalidate = file->f_version != inode->i_version;
if (pos > inode->i_size - EXT2_DIR_REC_LEN(1))
return 0;
@@ -305,16 +314,16 @@ ext2_readdir (struct file * filp, void * dirent, filldir_t filldir)
ext2_error(sb, __func__,
"bad page in #%lu",
inode->i_ino);
- filp->f_pos += PAGE_CACHE_SIZE - offset;
+ ctx->pos += PAGE_CACHE_SIZE - offset;
return PTR_ERR(page);
}
kaddr = page_address(page);
if (unlikely(need_revalidate)) {
if (offset) {
offset = ext2_validate_entry(kaddr, offset, chunk_mask);
- filp->f_pos = (n<<PAGE_CACHE_SHIFT) + offset;
+ ctx->pos = (n<<PAGE_CACHE_SHIFT) + offset;
}
- filp->f_version = inode->i_version;
+ file->f_version = inode->i_version;
need_revalidate = 0;
}
de = (ext2_dirent *)(kaddr+offset);
@@ -327,22 +336,19 @@ ext2_readdir (struct file * filp, void * dirent, filldir_t filldir)
return -EIO;
}
if (de->inode) {
- int over;
unsigned char d_type = DT_UNKNOWN;
if (types && de->file_type < EXT2_FT_MAX)
d_type = types[de->file_type];
- offset = (char *)de - kaddr;
- over = filldir(dirent, de->name, de->name_len,
- (n<<PAGE_CACHE_SHIFT) | offset,
- le32_to_cpu(de->inode), d_type);
- if (over) {
+ if (!dir_emit(ctx, de->name, de->name_len,
+ le32_to_cpu(de->inode),
+ d_type)) {
ext2_put_page(page);
return 0;
}
}
- filp->f_pos += ext2_rec_len_from_disk(de->rec_len);
+ ctx->pos += ext2_rec_len_from_disk(de->rec_len);
}
ext2_put_page(page);
}
@@ -448,6 +454,11 @@ ino_t ext2_inode_by_name(struct inode *dir, struct qstr *child)
return res;
}
+static int ext2_prepare_chunk(struct page *page, loff_t pos, unsigned len)
+{
+ return __block_write_begin(page, pos, len, ext2_get_block);
+}
+
/* Releases the page */
void ext2_set_link(struct inode *dir, struct ext2_dir_entry_2 *de,
struct page *page, struct inode *inode, int update_times)
@@ -458,8 +469,7 @@ void ext2_set_link(struct inode *dir, struct ext2_dir_entry_2 *de,
int err;
lock_page(page);
- err = __ext2_write_begin(NULL, page->mapping, pos, len,
- AOP_FLAG_UNINTERRUPTIBLE, &page, NULL);
+ err = ext2_prepare_chunk(page, pos, len);
BUG_ON(err);
de->inode = cpu_to_le32(inode->i_ino);
ext2_set_de_type(de, inode);
@@ -542,8 +552,7 @@ int ext2_add_link (struct dentry *dentry, struct inode *inode)
got_it:
pos = page_offset(page) +
(char*)de - (char*)page_address(page);
- err = __ext2_write_begin(NULL, page->mapping, pos, rec_len, 0,
- &page, NULL);
+ err = ext2_prepare_chunk(page, pos, rec_len);
if (err)
goto out_unlock;
if (de->inode) {
@@ -576,8 +585,7 @@ out_unlock:
*/
int ext2_delete_entry (struct ext2_dir_entry_2 * dir, struct page * page )
{
- struct address_space *mapping = page->mapping;
- struct inode *inode = mapping->host;
+ struct inode *inode = page->mapping->host;
char *kaddr = page_address(page);
unsigned from = ((char*)dir - kaddr) & ~(ext2_chunk_size(inode)-1);
unsigned to = ((char *)dir - kaddr) +
@@ -601,8 +609,7 @@ int ext2_delete_entry (struct ext2_dir_entry_2 * dir, struct page * page )
from = (char*)pde - (char*)page_address(page);
pos = page_offset(page) + from;
lock_page(page);
- err = __ext2_write_begin(NULL, page->mapping, pos, to - from, 0,
- &page, NULL);
+ err = ext2_prepare_chunk(page, pos, to - from);
BUG_ON(err);
if (pde)
pde->rec_len = ext2_rec_len_to_disk(to - from);
@@ -621,8 +628,7 @@ out:
*/
int ext2_make_empty(struct inode *inode, struct inode *parent)
{
- struct address_space *mapping = inode->i_mapping;
- struct page *page = grab_cache_page(mapping, 0);
+ struct page *page = grab_cache_page(inode->i_mapping, 0);
unsigned chunk_size = ext2_chunk_size(inode);
struct ext2_dir_entry_2 * de;
int err;
@@ -631,13 +637,12 @@ int ext2_make_empty(struct inode *inode, struct inode *parent)
if (!page)
return -ENOMEM;
- err = __ext2_write_begin(NULL, page->mapping, 0, chunk_size, 0,
- &page, NULL);
+ err = ext2_prepare_chunk(page, 0, chunk_size);
if (err) {
unlock_page(page);
goto fail;
}
- kaddr = kmap_atomic(page, KM_USER0);
+ kaddr = kmap_atomic(page);
memset(kaddr, 0, chunk_size);
de = (struct ext2_dir_entry_2 *)kaddr;
de->name_len = 1;
@@ -652,7 +657,7 @@ int ext2_make_empty(struct inode *inode, struct inode *parent)
de->inode = cpu_to_le32(parent->i_ino);
memcpy (de->name, "..\0", 4);
ext2_set_de_type (de, inode);
- kunmap_atomic(kaddr, KM_USER0);
+ kunmap_atomic(kaddr);
err = ext2_commit_chunk(page, 0, chunk_size);
fail:
page_cache_release(page);
@@ -716,7 +721,7 @@ not_empty:
const struct file_operations ext2_dir_operations = {
.llseek = generic_file_llseek,
.read = generic_read_dir,
- .readdir = ext2_readdir,
+ .iterate = ext2_readdir,
.unlocked_ioctl = ext2_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = ext2_compat_ioctl,
diff --git a/fs/ext2/ext2.h b/fs/ext2/ext2.h
index 061914add3c..d9a17d0b124 100644
--- a/fs/ext2/ext2.h
+++ b/fs/ext2/ext2.h
@@ -1,13 +1,644 @@
+/*
+ * Copyright (C) 1992, 1993, 1994, 1995
+ * Remy Card (card@masi.ibp.fr)
+ * Laboratoire MASI - Institut Blaise Pascal
+ * Universite Pierre et Marie Curie (Paris VI)
+ *
+ * from
+ *
+ * linux/include/linux/minix_fs.h
+ *
+ * Copyright (C) 1991, 1992 Linus Torvalds
+ */
#include <linux/fs.h>
#include <linux/ext2_fs.h>
+#include <linux/blockgroup_lock.h>
+#include <linux/percpu_counter.h>
+#include <linux/rbtree.h>
+
+/* XXX Here for now... not interested in restructing headers JUST now */
+
+/* data type for block offset of block group */
+typedef int ext2_grpblk_t;
+
+/* data type for filesystem-wide blocks number */
+typedef unsigned long ext2_fsblk_t;
+
+#define E2FSBLK "%lu"
+
+struct ext2_reserve_window {
+ ext2_fsblk_t _rsv_start; /* First byte reserved */
+ ext2_fsblk_t _rsv_end; /* Last byte reserved or 0 */
+};
+
+struct ext2_reserve_window_node {
+ struct rb_node rsv_node;
+ __u32 rsv_goal_size;
+ __u32 rsv_alloc_hit;
+ struct ext2_reserve_window rsv_window;
+};
+
+struct ext2_block_alloc_info {
+ /* information about reservation window */
+ struct ext2_reserve_window_node rsv_window_node;
+ /*
+ * was i_next_alloc_block in ext2_inode_info
+ * is the logical (file-relative) number of the
+ * most-recently-allocated block in this file.
+ * We use this for detecting linearly ascending allocation requests.
+ */
+ __u32 last_alloc_logical_block;
+ /*
+ * Was i_next_alloc_goal in ext2_inode_info
+ * is the *physical* companion to i_next_alloc_block.
+ * it the the physical block number of the block which was most-recentl
+ * allocated to this file. This give us the goal (target) for the next
+ * allocation when we detect linearly ascending requests.
+ */
+ ext2_fsblk_t last_alloc_physical_block;
+};
+
+#define rsv_start rsv_window._rsv_start
+#define rsv_end rsv_window._rsv_end
+
+/*
+ * second extended-fs super-block data in memory
+ */
+struct ext2_sb_info {
+ unsigned long s_frag_size; /* Size of a fragment in bytes */
+ unsigned long s_frags_per_block;/* Number of fragments per block */
+ unsigned long s_inodes_per_block;/* Number of inodes per block */
+ unsigned long s_frags_per_group;/* Number of fragments in a group */
+ unsigned long s_blocks_per_group;/* Number of blocks in a group */
+ unsigned long s_inodes_per_group;/* Number of inodes in a group */
+ unsigned long s_itb_per_group; /* Number of inode table blocks per group */
+ unsigned long s_gdb_count; /* Number of group descriptor blocks */
+ unsigned long s_desc_per_block; /* Number of group descriptors per block */
+ unsigned long s_groups_count; /* Number of groups in the fs */
+ unsigned long s_overhead_last; /* Last calculated overhead */
+ unsigned long s_blocks_last; /* Last seen block count */
+ struct buffer_head * s_sbh; /* Buffer containing the super block */
+ struct ext2_super_block * s_es; /* Pointer to the super block in the buffer */
+ struct buffer_head ** s_group_desc;
+ unsigned long s_mount_opt;
+ unsigned long s_sb_block;
+ kuid_t s_resuid;
+ kgid_t s_resgid;
+ unsigned short s_mount_state;
+ unsigned short s_pad;
+ int s_addr_per_block_bits;
+ int s_desc_per_block_bits;
+ int s_inode_size;
+ int s_first_ino;
+ spinlock_t s_next_gen_lock;
+ u32 s_next_generation;
+ unsigned long s_dir_count;
+ u8 *s_debts;
+ struct percpu_counter s_freeblocks_counter;
+ struct percpu_counter s_freeinodes_counter;
+ struct percpu_counter s_dirs_counter;
+ struct blockgroup_lock *s_blockgroup_lock;
+ /* root of the per fs reservation window tree */
+ spinlock_t s_rsv_window_lock;
+ struct rb_root s_rsv_window_root;
+ struct ext2_reserve_window_node s_rsv_window_head;
+ /*
+ * s_lock protects against concurrent modifications of s_mount_state,
+ * s_blocks_last, s_overhead_last and the content of superblock's
+ * buffer pointed to by sbi->s_es.
+ *
+ * Note: It is used in ext2_show_options() to provide a consistent view
+ * of the mount options.
+ */
+ spinlock_t s_lock;
+};
+
+static inline spinlock_t *
+sb_bgl_lock(struct ext2_sb_info *sbi, unsigned int block_group)
+{
+ return bgl_lock_ptr(sbi->s_blockgroup_lock, block_group);
+}
+
+/*
+ * Define EXT2FS_DEBUG to produce debug messages
+ */
+#undef EXT2FS_DEBUG
+
+/*
+ * Define EXT2_RESERVATION to reserve data blocks for expanding files
+ */
+#define EXT2_DEFAULT_RESERVE_BLOCKS 8
+/*max window size: 1024(direct blocks) + 3([t,d]indirect blocks) */
+#define EXT2_MAX_RESERVE_BLOCKS 1027
+#define EXT2_RESERVE_WINDOW_NOT_ALLOCATED 0
+/*
+ * The second extended file system version
+ */
+#define EXT2FS_DATE "95/08/09"
+#define EXT2FS_VERSION "0.5b"
+
+/*
+ * Debug code
+ */
+#ifdef EXT2FS_DEBUG
+# define ext2_debug(f, a...) { \
+ printk ("EXT2-fs DEBUG (%s, %d): %s:", \
+ __FILE__, __LINE__, __func__); \
+ printk (f, ## a); \
+ }
+#else
+# define ext2_debug(f, a...) /**/
+#endif
+
+/*
+ * Special inode numbers
+ */
+#define EXT2_BAD_INO 1 /* Bad blocks inode */
+#define EXT2_ROOT_INO 2 /* Root inode */
+#define EXT2_BOOT_LOADER_INO 5 /* Boot loader inode */
+#define EXT2_UNDEL_DIR_INO 6 /* Undelete directory inode */
+
+/* First non-reserved inode for old ext2 filesystems */
+#define EXT2_GOOD_OLD_FIRST_INO 11
+
+static inline struct ext2_sb_info *EXT2_SB(struct super_block *sb)
+{
+ return sb->s_fs_info;
+}
+
+/*
+ * Macro-instructions used to manage several block sizes
+ */
+#define EXT2_MIN_BLOCK_SIZE 1024
+#define EXT2_MAX_BLOCK_SIZE 4096
+#define EXT2_MIN_BLOCK_LOG_SIZE 10
+#define EXT2_BLOCK_SIZE(s) ((s)->s_blocksize)
+#define EXT2_ADDR_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (__u32))
+#define EXT2_BLOCK_SIZE_BITS(s) ((s)->s_blocksize_bits)
+#define EXT2_ADDR_PER_BLOCK_BITS(s) (EXT2_SB(s)->s_addr_per_block_bits)
+#define EXT2_INODE_SIZE(s) (EXT2_SB(s)->s_inode_size)
+#define EXT2_FIRST_INO(s) (EXT2_SB(s)->s_first_ino)
+
+/*
+ * Macro-instructions used to manage fragments
+ */
+#define EXT2_MIN_FRAG_SIZE 1024
+#define EXT2_MAX_FRAG_SIZE 4096
+#define EXT2_MIN_FRAG_LOG_SIZE 10
+#define EXT2_FRAG_SIZE(s) (EXT2_SB(s)->s_frag_size)
+#define EXT2_FRAGS_PER_BLOCK(s) (EXT2_SB(s)->s_frags_per_block)
+
+/*
+ * Structure of a blocks group descriptor
+ */
+struct ext2_group_desc
+{
+ __le32 bg_block_bitmap; /* Blocks bitmap block */
+ __le32 bg_inode_bitmap; /* Inodes bitmap block */
+ __le32 bg_inode_table; /* Inodes table block */
+ __le16 bg_free_blocks_count; /* Free blocks count */
+ __le16 bg_free_inodes_count; /* Free inodes count */
+ __le16 bg_used_dirs_count; /* Directories count */
+ __le16 bg_pad;
+ __le32 bg_reserved[3];
+};
+
+/*
+ * Macro-instructions used to manage group descriptors
+ */
+#define EXT2_BLOCKS_PER_GROUP(s) (EXT2_SB(s)->s_blocks_per_group)
+#define EXT2_DESC_PER_BLOCK(s) (EXT2_SB(s)->s_desc_per_block)
+#define EXT2_INODES_PER_GROUP(s) (EXT2_SB(s)->s_inodes_per_group)
+#define EXT2_DESC_PER_BLOCK_BITS(s) (EXT2_SB(s)->s_desc_per_block_bits)
+
+/*
+ * Constants relative to the data blocks
+ */
+#define EXT2_NDIR_BLOCKS 12
+#define EXT2_IND_BLOCK EXT2_NDIR_BLOCKS
+#define EXT2_DIND_BLOCK (EXT2_IND_BLOCK + 1)
+#define EXT2_TIND_BLOCK (EXT2_DIND_BLOCK + 1)
+#define EXT2_N_BLOCKS (EXT2_TIND_BLOCK + 1)
+
+/*
+ * Inode flags (GETFLAGS/SETFLAGS)
+ */
+#define EXT2_SECRM_FL FS_SECRM_FL /* Secure deletion */
+#define EXT2_UNRM_FL FS_UNRM_FL /* Undelete */
+#define EXT2_COMPR_FL FS_COMPR_FL /* Compress file */
+#define EXT2_SYNC_FL FS_SYNC_FL /* Synchronous updates */
+#define EXT2_IMMUTABLE_FL FS_IMMUTABLE_FL /* Immutable file */
+#define EXT2_APPEND_FL FS_APPEND_FL /* writes to file may only append */
+#define EXT2_NODUMP_FL FS_NODUMP_FL /* do not dump file */
+#define EXT2_NOATIME_FL FS_NOATIME_FL /* do not update atime */
+/* Reserved for compression usage... */
+#define EXT2_DIRTY_FL FS_DIRTY_FL
+#define EXT2_COMPRBLK_FL FS_COMPRBLK_FL /* One or more compressed clusters */
+#define EXT2_NOCOMP_FL FS_NOCOMP_FL /* Don't compress */
+#define EXT2_ECOMPR_FL FS_ECOMPR_FL /* Compression error */
+/* End compression flags --- maybe not all used */
+#define EXT2_BTREE_FL FS_BTREE_FL /* btree format dir */
+#define EXT2_INDEX_FL FS_INDEX_FL /* hash-indexed directory */
+#define EXT2_IMAGIC_FL FS_IMAGIC_FL /* AFS directory */
+#define EXT2_JOURNAL_DATA_FL FS_JOURNAL_DATA_FL /* Reserved for ext3 */
+#define EXT2_NOTAIL_FL FS_NOTAIL_FL /* file tail should not be merged */
+#define EXT2_DIRSYNC_FL FS_DIRSYNC_FL /* dirsync behaviour (directories only) */
+#define EXT2_TOPDIR_FL FS_TOPDIR_FL /* Top of directory hierarchies*/
+#define EXT2_RESERVED_FL FS_RESERVED_FL /* reserved for ext2 lib */
+
+#define EXT2_FL_USER_VISIBLE FS_FL_USER_VISIBLE /* User visible flags */
+#define EXT2_FL_USER_MODIFIABLE FS_FL_USER_MODIFIABLE /* User modifiable flags */
+
+/* Flags that should be inherited by new inodes from their parent. */
+#define EXT2_FL_INHERITED (EXT2_SECRM_FL | EXT2_UNRM_FL | EXT2_COMPR_FL |\
+ EXT2_SYNC_FL | EXT2_NODUMP_FL |\
+ EXT2_NOATIME_FL | EXT2_COMPRBLK_FL |\
+ EXT2_NOCOMP_FL | EXT2_JOURNAL_DATA_FL |\
+ EXT2_NOTAIL_FL | EXT2_DIRSYNC_FL)
+
+/* Flags that are appropriate for regular files (all but dir-specific ones). */
+#define EXT2_REG_FLMASK (~(EXT2_DIRSYNC_FL | EXT2_TOPDIR_FL))
+
+/* Flags that are appropriate for non-directories/regular files. */
+#define EXT2_OTHER_FLMASK (EXT2_NODUMP_FL | EXT2_NOATIME_FL)
+
+/* Mask out flags that are inappropriate for the given type of inode. */
+static inline __u32 ext2_mask_flags(umode_t mode, __u32 flags)
+{
+ if (S_ISDIR(mode))
+ return flags;
+ else if (S_ISREG(mode))
+ return flags & EXT2_REG_FLMASK;
+ else
+ return flags & EXT2_OTHER_FLMASK;
+}
+
+/*
+ * ioctl commands
+ */
+#define EXT2_IOC_GETFLAGS FS_IOC_GETFLAGS
+#define EXT2_IOC_SETFLAGS FS_IOC_SETFLAGS
+#define EXT2_IOC_GETVERSION FS_IOC_GETVERSION
+#define EXT2_IOC_SETVERSION FS_IOC_SETVERSION
+#define EXT2_IOC_GETRSVSZ _IOR('f', 5, long)
+#define EXT2_IOC_SETRSVSZ _IOW('f', 6, long)
+
+/*
+ * ioctl commands in 32 bit emulation
+ */
+#define EXT2_IOC32_GETFLAGS FS_IOC32_GETFLAGS
+#define EXT2_IOC32_SETFLAGS FS_IOC32_SETFLAGS
+#define EXT2_IOC32_GETVERSION FS_IOC32_GETVERSION
+#define EXT2_IOC32_SETVERSION FS_IOC32_SETVERSION
+
+/*
+ * Structure of an inode on the disk
+ */
+struct ext2_inode {
+ __le16 i_mode; /* File mode */
+ __le16 i_uid; /* Low 16 bits of Owner Uid */
+ __le32 i_size; /* Size in bytes */
+ __le32 i_atime; /* Access time */
+ __le32 i_ctime; /* Creation time */
+ __le32 i_mtime; /* Modification time */
+ __le32 i_dtime; /* Deletion Time */
+ __le16 i_gid; /* Low 16 bits of Group Id */
+ __le16 i_links_count; /* Links count */
+ __le32 i_blocks; /* Blocks count */
+ __le32 i_flags; /* File flags */
+ union {
+ struct {
+ __le32 l_i_reserved1;
+ } linux1;
+ struct {
+ __le32 h_i_translator;
+ } hurd1;
+ struct {
+ __le32 m_i_reserved1;
+ } masix1;
+ } osd1; /* OS dependent 1 */
+ __le32 i_block[EXT2_N_BLOCKS];/* Pointers to blocks */
+ __le32 i_generation; /* File version (for NFS) */
+ __le32 i_file_acl; /* File ACL */
+ __le32 i_dir_acl; /* Directory ACL */
+ __le32 i_faddr; /* Fragment address */
+ union {
+ struct {
+ __u8 l_i_frag; /* Fragment number */
+ __u8 l_i_fsize; /* Fragment size */
+ __u16 i_pad1;
+ __le16 l_i_uid_high; /* these 2 fields */
+ __le16 l_i_gid_high; /* were reserved2[0] */
+ __u32 l_i_reserved2;
+ } linux2;
+ struct {
+ __u8 h_i_frag; /* Fragment number */
+ __u8 h_i_fsize; /* Fragment size */
+ __le16 h_i_mode_high;
+ __le16 h_i_uid_high;
+ __le16 h_i_gid_high;
+ __le32 h_i_author;
+ } hurd2;
+ struct {
+ __u8 m_i_frag; /* Fragment number */
+ __u8 m_i_fsize; /* Fragment size */
+ __u16 m_pad1;
+ __u32 m_i_reserved2[2];
+ } masix2;
+ } osd2; /* OS dependent 2 */
+};
+
+#define i_size_high i_dir_acl
+
+#define i_reserved1 osd1.linux1.l_i_reserved1
+#define i_frag osd2.linux2.l_i_frag
+#define i_fsize osd2.linux2.l_i_fsize
+#define i_uid_low i_uid
+#define i_gid_low i_gid
+#define i_uid_high osd2.linux2.l_i_uid_high
+#define i_gid_high osd2.linux2.l_i_gid_high
+#define i_reserved2 osd2.linux2.l_i_reserved2
+
+/*
+ * File system states
+ */
+#define EXT2_VALID_FS 0x0001 /* Unmounted cleanly */
+#define EXT2_ERROR_FS 0x0002 /* Errors detected */
+
+/*
+ * Mount flags
+ */
+#define EXT2_MOUNT_CHECK 0x000001 /* Do mount-time checks */
+#define EXT2_MOUNT_OLDALLOC 0x000002 /* Don't use the new Orlov allocator */
+#define EXT2_MOUNT_GRPID 0x000004 /* Create files with directory's group */
+#define EXT2_MOUNT_DEBUG 0x000008 /* Some debugging messages */
+#define EXT2_MOUNT_ERRORS_CONT 0x000010 /* Continue on errors */
+#define EXT2_MOUNT_ERRORS_RO 0x000020 /* Remount fs ro on errors */
+#define EXT2_MOUNT_ERRORS_PANIC 0x000040 /* Panic on errors */
+#define EXT2_MOUNT_MINIX_DF 0x000080 /* Mimics the Minix statfs */
+#define EXT2_MOUNT_NOBH 0x000100 /* No buffer_heads */
+#define EXT2_MOUNT_NO_UID32 0x000200 /* Disable 32-bit UIDs */
+#define EXT2_MOUNT_XATTR_USER 0x004000 /* Extended user attributes */
+#define EXT2_MOUNT_POSIX_ACL 0x008000 /* POSIX Access Control Lists */
+#define EXT2_MOUNT_XIP 0x010000 /* Execute in place */
+#define EXT2_MOUNT_USRQUOTA 0x020000 /* user quota */
+#define EXT2_MOUNT_GRPQUOTA 0x040000 /* group quota */
+#define EXT2_MOUNT_RESERVATION 0x080000 /* Preallocation */
+
+
+#define clear_opt(o, opt) o &= ~EXT2_MOUNT_##opt
+#define set_opt(o, opt) o |= EXT2_MOUNT_##opt
+#define test_opt(sb, opt) (EXT2_SB(sb)->s_mount_opt & \
+ EXT2_MOUNT_##opt)
+/*
+ * Maximal mount counts between two filesystem checks
+ */
+#define EXT2_DFL_MAX_MNT_COUNT 20 /* Allow 20 mounts */
+#define EXT2_DFL_CHECKINTERVAL 0 /* Don't use interval check */
+
+/*
+ * Behaviour when detecting errors
+ */
+#define EXT2_ERRORS_CONTINUE 1 /* Continue execution */
+#define EXT2_ERRORS_RO 2 /* Remount fs read-only */
+#define EXT2_ERRORS_PANIC 3 /* Panic */
+#define EXT2_ERRORS_DEFAULT EXT2_ERRORS_CONTINUE
+
+/*
+ * Structure of the super block
+ */
+struct ext2_super_block {
+ __le32 s_inodes_count; /* Inodes count */
+ __le32 s_blocks_count; /* Blocks count */
+ __le32 s_r_blocks_count; /* Reserved blocks count */
+ __le32 s_free_blocks_count; /* Free blocks count */
+ __le32 s_free_inodes_count; /* Free inodes count */
+ __le32 s_first_data_block; /* First Data Block */
+ __le32 s_log_block_size; /* Block size */
+ __le32 s_log_frag_size; /* Fragment size */
+ __le32 s_blocks_per_group; /* # Blocks per group */
+ __le32 s_frags_per_group; /* # Fragments per group */
+ __le32 s_inodes_per_group; /* # Inodes per group */
+ __le32 s_mtime; /* Mount time */
+ __le32 s_wtime; /* Write time */
+ __le16 s_mnt_count; /* Mount count */
+ __le16 s_max_mnt_count; /* Maximal mount count */
+ __le16 s_magic; /* Magic signature */
+ __le16 s_state; /* File system state */
+ __le16 s_errors; /* Behaviour when detecting errors */
+ __le16 s_minor_rev_level; /* minor revision level */
+ __le32 s_lastcheck; /* time of last check */
+ __le32 s_checkinterval; /* max. time between checks */
+ __le32 s_creator_os; /* OS */
+ __le32 s_rev_level; /* Revision level */
+ __le16 s_def_resuid; /* Default uid for reserved blocks */
+ __le16 s_def_resgid; /* Default gid for reserved blocks */
+ /*
+ * These fields are for EXT2_DYNAMIC_REV superblocks only.
+ *
+ * Note: the difference between the compatible feature set and
+ * the incompatible feature set is that if there is a bit set
+ * in the incompatible feature set that the kernel doesn't
+ * know about, it should refuse to mount the filesystem.
+ *
+ * e2fsck's requirements are more strict; if it doesn't know
+ * about a feature in either the compatible or incompatible
+ * feature set, it must abort and not try to meddle with
+ * things it doesn't understand...
+ */
+ __le32 s_first_ino; /* First non-reserved inode */
+ __le16 s_inode_size; /* size of inode structure */
+ __le16 s_block_group_nr; /* block group # of this superblock */
+ __le32 s_feature_compat; /* compatible feature set */
+ __le32 s_feature_incompat; /* incompatible feature set */
+ __le32 s_feature_ro_compat; /* readonly-compatible feature set */
+ __u8 s_uuid[16]; /* 128-bit uuid for volume */
+ char s_volume_name[16]; /* volume name */
+ char s_last_mounted[64]; /* directory where last mounted */
+ __le32 s_algorithm_usage_bitmap; /* For compression */
+ /*
+ * Performance hints. Directory preallocation should only
+ * happen if the EXT2_COMPAT_PREALLOC flag is on.
+ */
+ __u8 s_prealloc_blocks; /* Nr of blocks to try to preallocate*/
+ __u8 s_prealloc_dir_blocks; /* Nr to preallocate for dirs */
+ __u16 s_padding1;
+ /*
+ * Journaling support valid if EXT3_FEATURE_COMPAT_HAS_JOURNAL set.
+ */
+ __u8 s_journal_uuid[16]; /* uuid of journal superblock */
+ __u32 s_journal_inum; /* inode number of journal file */
+ __u32 s_journal_dev; /* device number of journal file */
+ __u32 s_last_orphan; /* start of list of inodes to delete */
+ __u32 s_hash_seed[4]; /* HTREE hash seed */
+ __u8 s_def_hash_version; /* Default hash version to use */
+ __u8 s_reserved_char_pad;
+ __u16 s_reserved_word_pad;
+ __le32 s_default_mount_opts;
+ __le32 s_first_meta_bg; /* First metablock block group */
+ __u32 s_reserved[190]; /* Padding to the end of the block */
+};
+
+/*
+ * Codes for operating systems
+ */
+#define EXT2_OS_LINUX 0
+#define EXT2_OS_HURD 1
+#define EXT2_OS_MASIX 2
+#define EXT2_OS_FREEBSD 3
+#define EXT2_OS_LITES 4
+
+/*
+ * Revision levels
+ */
+#define EXT2_GOOD_OLD_REV 0 /* The good old (original) format */
+#define EXT2_DYNAMIC_REV 1 /* V2 format w/ dynamic inode sizes */
+
+#define EXT2_CURRENT_REV EXT2_GOOD_OLD_REV
+#define EXT2_MAX_SUPP_REV EXT2_DYNAMIC_REV
+
+#define EXT2_GOOD_OLD_INODE_SIZE 128
+
+/*
+ * Feature set definitions
+ */
+
+#define EXT2_HAS_COMPAT_FEATURE(sb,mask) \
+ ( EXT2_SB(sb)->s_es->s_feature_compat & cpu_to_le32(mask) )
+#define EXT2_HAS_RO_COMPAT_FEATURE(sb,mask) \
+ ( EXT2_SB(sb)->s_es->s_feature_ro_compat & cpu_to_le32(mask) )
+#define EXT2_HAS_INCOMPAT_FEATURE(sb,mask) \
+ ( EXT2_SB(sb)->s_es->s_feature_incompat & cpu_to_le32(mask) )
+#define EXT2_SET_COMPAT_FEATURE(sb,mask) \
+ EXT2_SB(sb)->s_es->s_feature_compat |= cpu_to_le32(mask)
+#define EXT2_SET_RO_COMPAT_FEATURE(sb,mask) \
+ EXT2_SB(sb)->s_es->s_feature_ro_compat |= cpu_to_le32(mask)
+#define EXT2_SET_INCOMPAT_FEATURE(sb,mask) \
+ EXT2_SB(sb)->s_es->s_feature_incompat |= cpu_to_le32(mask)
+#define EXT2_CLEAR_COMPAT_FEATURE(sb,mask) \
+ EXT2_SB(sb)->s_es->s_feature_compat &= ~cpu_to_le32(mask)
+#define EXT2_CLEAR_RO_COMPAT_FEATURE(sb,mask) \
+ EXT2_SB(sb)->s_es->s_feature_ro_compat &= ~cpu_to_le32(mask)
+#define EXT2_CLEAR_INCOMPAT_FEATURE(sb,mask) \
+ EXT2_SB(sb)->s_es->s_feature_incompat &= ~cpu_to_le32(mask)
+
+#define EXT2_FEATURE_COMPAT_DIR_PREALLOC 0x0001
+#define EXT2_FEATURE_COMPAT_IMAGIC_INODES 0x0002
+#define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004
+#define EXT2_FEATURE_COMPAT_EXT_ATTR 0x0008
+#define EXT2_FEATURE_COMPAT_RESIZE_INO 0x0010
+#define EXT2_FEATURE_COMPAT_DIR_INDEX 0x0020
+#define EXT2_FEATURE_COMPAT_ANY 0xffffffff
+
+#define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001
+#define EXT2_FEATURE_RO_COMPAT_LARGE_FILE 0x0002
+#define EXT2_FEATURE_RO_COMPAT_BTREE_DIR 0x0004
+#define EXT2_FEATURE_RO_COMPAT_ANY 0xffffffff
+
+#define EXT2_FEATURE_INCOMPAT_COMPRESSION 0x0001
+#define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002
+#define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004
+#define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008
+#define EXT2_FEATURE_INCOMPAT_META_BG 0x0010
+#define EXT2_FEATURE_INCOMPAT_ANY 0xffffffff
+
+#define EXT2_FEATURE_COMPAT_SUPP EXT2_FEATURE_COMPAT_EXT_ATTR
+#define EXT2_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE| \
+ EXT2_FEATURE_INCOMPAT_META_BG)
+#define EXT2_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \
+ EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \
+ EXT2_FEATURE_RO_COMPAT_BTREE_DIR)
+#define EXT2_FEATURE_RO_COMPAT_UNSUPPORTED ~EXT2_FEATURE_RO_COMPAT_SUPP
+#define EXT2_FEATURE_INCOMPAT_UNSUPPORTED ~EXT2_FEATURE_INCOMPAT_SUPP
+
+/*
+ * Default values for user and/or group using reserved blocks
+ */
+#define EXT2_DEF_RESUID 0
+#define EXT2_DEF_RESGID 0
+
+/*
+ * Default mount options
+ */
+#define EXT2_DEFM_DEBUG 0x0001
+#define EXT2_DEFM_BSDGROUPS 0x0002
+#define EXT2_DEFM_XATTR_USER 0x0004
+#define EXT2_DEFM_ACL 0x0008
+#define EXT2_DEFM_UID16 0x0010
+ /* Not used by ext2, but reserved for use by ext3 */
+#define EXT3_DEFM_JMODE 0x0060
+#define EXT3_DEFM_JMODE_DATA 0x0020
+#define EXT3_DEFM_JMODE_ORDERED 0x0040
+#define EXT3_DEFM_JMODE_WBACK 0x0060
+
+/*
+ * Structure of a directory entry
+ */
+
+struct ext2_dir_entry {
+ __le32 inode; /* Inode number */
+ __le16 rec_len; /* Directory entry length */
+ __le16 name_len; /* Name length */
+ char name[]; /* File name, up to EXT2_NAME_LEN */
+};
+
+/*
+ * The new version of the directory entry. Since EXT2 structures are
+ * stored in intel byte order, and the name_len field could never be
+ * bigger than 255 chars, it's safe to reclaim the extra byte for the
+ * file_type field.
+ */
+struct ext2_dir_entry_2 {
+ __le32 inode; /* Inode number */
+ __le16 rec_len; /* Directory entry length */
+ __u8 name_len; /* Name length */
+ __u8 file_type;
+ char name[]; /* File name, up to EXT2_NAME_LEN */
+};
+
+/*
+ * Ext2 directory file types. Only the low 3 bits are used. The
+ * other bits are reserved for now.
+ */
+enum {
+ EXT2_FT_UNKNOWN = 0,
+ EXT2_FT_REG_FILE = 1,
+ EXT2_FT_DIR = 2,
+ EXT2_FT_CHRDEV = 3,
+ EXT2_FT_BLKDEV = 4,
+ EXT2_FT_FIFO = 5,
+ EXT2_FT_SOCK = 6,
+ EXT2_FT_SYMLINK = 7,
+ EXT2_FT_MAX
+};
+
+/*
+ * EXT2_DIR_PAD defines the directory entries boundaries
+ *
+ * NOTE: It must be a multiple of 4
+ */
+#define EXT2_DIR_PAD 4
+#define EXT2_DIR_ROUND (EXT2_DIR_PAD - 1)
+#define EXT2_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT2_DIR_ROUND) & \
+ ~EXT2_DIR_ROUND)
+#define EXT2_MAX_REC_LEN ((1<<16)-1)
+
+static inline void verify_offsets(void)
+{
+#define A(x,y) BUILD_BUG_ON(x != offsetof(struct ext2_super_block, y));
+ A(EXT2_SB_MAGIC_OFFSET, s_magic);
+ A(EXT2_SB_BLOCKS_OFFSET, s_blocks_count);
+ A(EXT2_SB_BSIZE_OFFSET, s_log_block_size);
+#undef A
+}
/*
* ext2 mount options
*/
struct ext2_mount_options {
unsigned long s_mount_opt;
- uid_t s_resuid;
- gid_t s_resgid;
+ kuid_t s_resuid;
+ kgid_t s_resgid;
};
/*
@@ -110,7 +741,7 @@ extern struct ext2_dir_entry_2 * ext2_dotdot (struct inode *, struct page **);
extern void ext2_set_link(struct inode *, struct ext2_dir_entry_2 *, struct page *, struct inode *, int);
/* ialloc.c */
-extern struct inode * ext2_new_inode (struct inode *, int);
+extern struct inode * ext2_new_inode (struct inode *, umode_t, const struct qstr *);
extern void ext2_free_inode (struct inode *);
extern unsigned long ext2_count_free_inodes (struct super_block *);
extern void ext2_check_inodes_bitmap (struct super_block *);
@@ -118,19 +749,14 @@ extern unsigned long ext2_count_free (struct buffer_head *, unsigned);
/* inode.c */
extern struct inode *ext2_iget (struct super_block *, unsigned long);
-extern int ext2_write_inode (struct inode *, int);
-extern void ext2_delete_inode (struct inode *);
-extern int ext2_sync_inode (struct inode *);
+extern int ext2_write_inode (struct inode *, struct writeback_control *);
+extern void ext2_evict_inode(struct inode *);
extern int ext2_get_block(struct inode *, sector_t, struct buffer_head *, int);
-extern void ext2_truncate (struct inode *);
extern int ext2_setattr (struct dentry *, struct iattr *);
extern void ext2_set_inode_flags(struct inode *inode);
extern void ext2_get_inode_flags(struct ext2_inode_info *);
extern int ext2_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
u64 start, u64 len);
-int __ext2_write_begin(struct file *file, struct address_space *mapping,
- loff_t pos, unsigned len, unsigned flags,
- struct page **pagep, void **fsdata);
/* ioctl.c */
extern long ext2_ioctl(struct file *, unsigned int, unsigned long);
@@ -140,10 +766,10 @@ extern long ext2_compat_ioctl(struct file *, unsigned int, unsigned long);
struct dentry *ext2_get_parent(struct dentry *child);
/* super.c */
-extern void ext2_error (struct super_block *, const char *, const char *, ...)
- __attribute__ ((format (printf, 3, 4)));
-extern void ext2_msg(struct super_block *, const char *, const char *, ...)
- __attribute__ ((format (printf, 3, 4)));
+extern __printf(3, 4)
+void ext2_error(struct super_block *, const char *, const char *, ...);
+extern __printf(3, 4)
+void ext2_msg(struct super_block *, const char *, const char *, ...);
extern void ext2_update_dynamic_rev (struct super_block *sb);
extern void ext2_write_super (struct super_block *);
@@ -155,7 +781,8 @@ extern void ext2_write_super (struct super_block *);
extern const struct file_operations ext2_dir_operations;
/* file.c */
-extern int ext2_fsync(struct file *file, struct dentry *dentry, int datasync);
+extern int ext2_fsync(struct file *file, loff_t start, loff_t end,
+ int datasync);
extern const struct inode_operations ext2_file_inode_operations;
extern const struct file_operations ext2_file_operations;
extern const struct file_operations ext2_xip_file_operations;
@@ -179,3 +806,9 @@ ext2_group_first_block_no(struct super_block *sb, unsigned long group_no)
return group_no * (ext2_fsblk_t)EXT2_BLOCKS_PER_GROUP(sb) +
le32_to_cpu(EXT2_SB(sb)->s_es->s_first_data_block);
}
+
+#define ext2_set_bit __test_and_set_bit_le
+#define ext2_clear_bit __test_and_clear_bit_le
+#define ext2_test_bit test_bit_le
+#define ext2_find_first_zero_bit find_first_zero_bit_le
+#define ext2_find_next_zero_bit find_next_zero_bit_le
diff --git a/fs/ext2/file.c b/fs/ext2/file.c
index 586e3589d4c..7c87b22a722 100644
--- a/fs/ext2/file.c
+++ b/fs/ext2/file.c
@@ -20,6 +20,7 @@
#include <linux/time.h>
#include <linux/pagemap.h>
+#include <linux/quotaops.h>
#include "ext2.h"
#include "xattr.h"
#include "acl.h"
@@ -39,13 +40,13 @@ static int ext2_release_file (struct inode * inode, struct file * filp)
return 0;
}
-int ext2_fsync(struct file *file, struct dentry *dentry, int datasync)
+int ext2_fsync(struct file *file, loff_t start, loff_t end, int datasync)
{
int ret;
- struct super_block *sb = dentry->d_inode->i_sb;
+ struct super_block *sb = file->f_mapping->host->i_sb;
struct address_space *mapping = sb->s_bdev->bd_inode->i_mapping;
- ret = simple_fsync(file, dentry, datasync);
+ ret = generic_file_fsync(file, start, end, datasync);
if (ret == -EIO || test_and_clear_bit(AS_EIO, &mapping->flags)) {
/* We don't really know where the IO error happened... */
ext2_error(sb, __func__,
@@ -61,20 +62,20 @@ int ext2_fsync(struct file *file, struct dentry *dentry, int datasync)
*/
const struct file_operations ext2_file_operations = {
.llseek = generic_file_llseek,
- .read = do_sync_read,
- .write = do_sync_write,
- .aio_read = generic_file_aio_read,
- .aio_write = generic_file_aio_write,
+ .read = new_sync_read,
+ .write = new_sync_write,
+ .read_iter = generic_file_read_iter,
+ .write_iter = generic_file_write_iter,
.unlocked_ioctl = ext2_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = ext2_compat_ioctl,
#endif
.mmap = generic_file_mmap,
- .open = generic_file_open,
+ .open = dquot_file_open,
.release = ext2_release_file,
.fsync = ext2_fsync,
.splice_read = generic_file_splice_read,
- .splice_write = generic_file_splice_write,
+ .splice_write = iter_file_splice_write,
};
#ifdef CONFIG_EXT2_FS_XIP
@@ -87,14 +88,13 @@ const struct file_operations ext2_xip_file_operations = {
.compat_ioctl = ext2_compat_ioctl,
#endif
.mmap = xip_file_mmap,
- .open = generic_file_open,
+ .open = dquot_file_open,
.release = ext2_release_file,
.fsync = ext2_fsync,
};
#endif
const struct inode_operations ext2_file_inode_operations = {
- .truncate = ext2_truncate,
#ifdef CONFIG_EXT2_FS_XATTR
.setxattr = generic_setxattr,
.getxattr = generic_getxattr,
@@ -102,6 +102,7 @@ const struct inode_operations ext2_file_inode_operations = {
.removexattr = generic_removexattr,
#endif
.setattr = ext2_setattr,
- .check_acl = ext2_check_acl,
+ .get_acl = ext2_get_acl,
+ .set_acl = ext2_set_acl,
.fiemap = ext2_fiemap,
};
diff --git a/fs/ext2/ialloc.c b/fs/ext2/ialloc.c
index 15387c9c17d..7d66fb0e4cc 100644
--- a/fs/ext2/ialloc.c
+++ b/fs/ext2/ialloc.c
@@ -81,7 +81,6 @@ static void ext2_release_inode(struct super_block *sb, int group, int dir)
spin_unlock(sb_bgl_lock(EXT2_SB(sb), group));
if (dir)
percpu_counter_dec(&EXT2_SB(sb)->s_dirs_counter);
- sb->s_dirt = 1;
mark_buffer_dirty(bh);
}
@@ -106,7 +105,7 @@ void ext2_free_inode (struct inode * inode)
struct super_block * sb = inode->i_sb;
int is_directory;
unsigned long ino;
- struct buffer_head *bitmap_bh = NULL;
+ struct buffer_head *bitmap_bh;
unsigned long block_group;
unsigned long bit;
struct ext2_super_block * es;
@@ -118,31 +117,24 @@ void ext2_free_inode (struct inode * inode)
* Note: we must free any quota before locking the superblock,
* as writing the quota to disk may need the lock as well.
*/
- if (!is_bad_inode(inode)) {
- /* Quota is already initialized in iput() */
- ext2_xattr_delete_inode(inode);
- vfs_dq_free_inode(inode);
- vfs_dq_drop(inode);
- }
+ /* Quota is already initialized in iput() */
+ dquot_free_inode(inode);
+ dquot_drop(inode);
es = EXT2_SB(sb)->s_es;
is_directory = S_ISDIR(inode->i_mode);
- /* Do this BEFORE marking the inode not in use or returning an error */
- clear_inode (inode);
-
if (ino < EXT2_FIRST_INO(sb) ||
ino > le32_to_cpu(es->s_inodes_count)) {
ext2_error (sb, "ext2_free_inode",
"reserved or nonexistent inode %lu", ino);
- goto error_return;
+ return;
}
block_group = (ino - 1) / EXT2_INODES_PER_GROUP(sb);
bit = (ino - 1) % EXT2_INODES_PER_GROUP(sb);
- brelse(bitmap_bh);
bitmap_bh = read_inode_bitmap(sb, block_group);
if (!bitmap_bh)
- goto error_return;
+ return;
/* Ok, now we can actually update the inode bitmaps.. */
if (!ext2_clear_bit_atomic(sb_bgl_lock(EXT2_SB(sb), block_group),
@@ -154,7 +146,7 @@ void ext2_free_inode (struct inode * inode)
mark_buffer_dirty(bitmap_bh);
if (sb->s_flags & MS_SYNCHRONOUS)
sync_dirty_buffer(bitmap_bh);
-error_return:
+
brelse(bitmap_bh);
}
@@ -292,7 +284,7 @@ static int find_group_orlov(struct super_block *sb, struct inode *parent)
int best_ndir = inodes_per_group;
int best_group = -1;
- get_random_bytes(&group, sizeof(group));
+ group = prandom_u32();
parent_group = (unsigned)group % ngroups;
for (i = 0; i < ngroups; i++) {
group = (parent_group + i) % ngroups;
@@ -435,7 +427,8 @@ found:
return group;
}
-struct inode *ext2_new_inode(struct inode *dir, int mode)
+struct inode *ext2_new_inode(struct inode *dir, umode_t mode,
+ const struct qstr *qstr)
{
struct super_block *sb;
struct buffer_head *bitmap_bh = NULL;
@@ -548,18 +541,13 @@ got:
}
spin_unlock(sb_bgl_lock(sbi, group));
- sb->s_dirt = 1;
mark_buffer_dirty(bh2);
- inode->i_uid = current_fsuid();
- if (test_opt (sb, GRPID))
+ if (test_opt(sb, GRPID)) {
+ inode->i_mode = mode;
+ inode->i_uid = current_fsuid();
inode->i_gid = dir->i_gid;
- else 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();
- inode->i_mode = mode;
+ inode_init_owner(inode, dir, mode);
inode->i_ino = ino;
inode->i_blocks = 0;
@@ -582,20 +570,23 @@ got:
inode->i_generation = sbi->s_next_generation++;
spin_unlock(&sbi->s_next_gen_lock);
if (insert_inode_locked(inode) < 0) {
- err = -EINVAL;
- goto fail_drop;
+ ext2_error(sb, "ext2_new_inode",
+ "inode number already in use - inode=%lu",
+ (unsigned long) ino);
+ err = -EIO;
+ goto fail;
}
- if (vfs_dq_alloc_inode(inode)) {
- err = -EDQUOT;
+ dquot_initialize(inode);
+ err = dquot_alloc_inode(inode);
+ if (err)
goto fail_drop;
- }
err = ext2_init_acl(inode, dir);
if (err)
goto fail_free_drop;
- err = ext2_init_security(inode,dir);
+ err = ext2_init_security(inode, dir, qstr);
if (err)
goto fail_free_drop;
@@ -605,12 +596,12 @@ got:
return inode;
fail_free_drop:
- vfs_dq_free_inode(inode);
+ dquot_free_inode(inode);
fail_drop:
- vfs_dq_drop(inode);
+ dquot_drop(inode);
inode->i_flags |= S_NOQUOTA;
- inode->i_nlink = 0;
+ clear_nlink(inode);
unlock_new_inode(inode);
iput(inode);
return ERR_PTR(err);
@@ -652,6 +643,7 @@ unsigned long ext2_count_free_inodes (struct super_block * sb)
}
brelse(bitmap_bh);
printk("ext2_count_free_inodes: stored = %lu, computed = %lu, %lu\n",
+ (unsigned long)
percpu_counter_read(&EXT2_SB(sb)->s_freeinodes_counter),
desc_count, bitmap_count);
return desc_count;
diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index 71b032c65a0..36d35c36311 100644
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -22,24 +22,22 @@
* Assorted race fixes, rewrite of ext2_get_block() by Al Viro, 2000
*/
-#include <linux/smp_lock.h>
#include <linux/time.h>
#include <linux/highuid.h>
#include <linux/pagemap.h>
#include <linux/quotaops.h>
-#include <linux/module.h>
#include <linux/writeback.h>
#include <linux/buffer_head.h>
#include <linux/mpage.h>
#include <linux/fiemap.h>
#include <linux/namei.h>
+#include <linux/aio.h>
#include "ext2.h"
#include "acl.h"
#include "xip.h"
+#include "xattr.h"
-MODULE_AUTHOR("Remy Card and others");
-MODULE_DESCRIPTION("Second Extended Filesystem");
-MODULE_LICENSE("GPL");
+static int __ext2_write_inode(struct inode *inode, int do_sync);
/*
* Test whether an inode is a fast symlink.
@@ -53,27 +51,61 @@ static inline int ext2_inode_is_fast_symlink(struct inode *inode)
inode->i_blocks - ea_blocks == 0);
}
+static void ext2_truncate_blocks(struct inode *inode, loff_t offset);
+
+static void ext2_write_failed(struct address_space *mapping, loff_t to)
+{
+ struct inode *inode = mapping->host;
+
+ if (to > inode->i_size) {
+ truncate_pagecache(inode, inode->i_size);
+ ext2_truncate_blocks(inode, inode->i_size);
+ }
+}
+
/*
* Called at the last iput() if i_nlink is zero.
*/
-void ext2_delete_inode (struct inode * inode)
+void ext2_evict_inode(struct inode * inode)
{
- truncate_inode_pages(&inode->i_data, 0);
+ struct ext2_block_alloc_info *rsv;
+ int want_delete = 0;
- if (is_bad_inode(inode))
- goto no_delete;
- EXT2_I(inode)->i_dtime = get_seconds();
- mark_inode_dirty(inode);
- ext2_write_inode(inode, inode_needs_sync(inode));
+ if (!inode->i_nlink && !is_bad_inode(inode)) {
+ want_delete = 1;
+ dquot_initialize(inode);
+ } else {
+ dquot_drop(inode);
+ }
- inode->i_size = 0;
- if (inode->i_blocks)
- ext2_truncate (inode);
- ext2_free_inode (inode);
+ truncate_inode_pages_final(&inode->i_data);
+
+ if (want_delete) {
+ sb_start_intwrite(inode->i_sb);
+ /* set dtime */
+ EXT2_I(inode)->i_dtime = get_seconds();
+ mark_inode_dirty(inode);
+ __ext2_write_inode(inode, inode_needs_sync(inode));
+ /* truncate to 0 */
+ inode->i_size = 0;
+ if (inode->i_blocks)
+ ext2_truncate_blocks(inode, 0);
+ ext2_xattr_delete_inode(inode);
+ }
- return;
-no_delete:
- clear_inode(inode); /* We must guarantee clearing of inode... */
+ invalidate_inode_buffers(inode);
+ clear_inode(inode);
+
+ ext2_discard_reservation(inode);
+ rsv = EXT2_I(inode)->i_block_alloc_info;
+ EXT2_I(inode)->i_block_alloc_info = NULL;
+ if (unlikely(rsv))
+ kfree(rsv);
+
+ if (want_delete) {
+ ext2_free_inode(inode);
+ sb_end_intwrite(inode->i_sb);
+ }
}
typedef struct {
@@ -274,7 +306,7 @@ static ext2_fsblk_t ext2_find_near(struct inode *inode, Indirect *ind)
return ind->bh->b_blocknr;
/*
- * It is going to be refered from inode itself? OK, just put it into
+ * It is going to be referred from inode itself? OK, just put it into
* the same cylinder group then.
*/
bg_start = ext2_group_first_block_no(inode->i_sb, ei->i_block_group);
@@ -408,6 +440,8 @@ static int ext2_alloc_blocks(struct inode *inode,
failed_out:
for (i = 0; i <index; i++)
ext2_free_blocks(inode, new_blocks[i], 1);
+ if (index)
+ mark_inode_dirty(inode);
return ret;
}
@@ -425,7 +459,7 @@ failed_out:
* the same format as ext2_get_branch() would do. We are calling it after
* we had read the existing part of chain and partial points to the last
* triple of that (one with zero ->key). Upon the exit we have the same
- * picture as after the successful ext2_get_block(), excpet that in one
+ * picture as after the successful ext2_get_block(), except that in one
* place chain is disconnected - *branch->p is still zero (we did not
* set the last link), but branch->key contains the number that should
* be placed into *branch->p to fill that gap.
@@ -464,6 +498,10 @@ static int ext2_alloc_branch(struct inode *inode,
* parent to disk.
*/
bh = sb_getblk(inode->i_sb, new_blocks[n-1]);
+ if (unlikely(!bh)) {
+ err = -ENOMEM;
+ goto failed;
+ }
branch[n].bh = bh;
lock_buffer(bh);
memset(bh->b_data, 0, blocksize);
@@ -492,6 +530,14 @@ static int ext2_alloc_branch(struct inode *inode,
}
*blks = num;
return err;
+
+failed:
+ for (i = 1; i < n; i++)
+ bforget(branch[i].bh);
+ for (i = 0; i < indirect_blks; i++)
+ ext2_free_blocks(inode, new_blocks[i], 1);
+ ext2_free_blocks(inode, new_blocks[i], num);
+ return err;
}
/**
@@ -586,6 +632,8 @@ static int ext2_get_blocks(struct inode *inode,
int count = 0;
ext2_fsblk_t first_block = 0;
+ BUG_ON(maxblocks == 0);
+
depth = ext2_block_to_path(inode,iblock,offsets,&blocks_to_boundary);
if (depth == 0)
@@ -629,7 +677,7 @@ static int ext2_get_blocks(struct inode *inode,
mutex_lock(&ei->truncate_mutex);
/*
* If the indirect block is missing while we are reading
- * the chain(ext3_get_branch() returns -EAGAIN err), or
+ * the chain(ext2_get_branch() returns -EAGAIN err), or
* if the chain has been changed after we grab the semaphore,
* (either because another process truncated this branch, or
* another get_block allocated this branch) re-grab the chain to see if
@@ -750,21 +798,30 @@ ext2_readpages(struct file *file, struct address_space *mapping,
return mpage_readpages(mapping, pages, nr_pages, ext2_get_block);
}
-int __ext2_write_begin(struct file *file, struct address_space *mapping,
+static int
+ext2_write_begin(struct file *file, struct address_space *mapping,
loff_t pos, unsigned len, unsigned flags,
struct page **pagep, void **fsdata)
{
- return block_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
- ext2_get_block);
+ int ret;
+
+ ret = block_write_begin(mapping, pos, len, flags, pagep,
+ ext2_get_block);
+ if (ret < 0)
+ ext2_write_failed(mapping, pos + len);
+ return ret;
}
-static int
-ext2_write_begin(struct file *file, struct address_space *mapping,
- loff_t pos, unsigned len, unsigned flags,
- struct page **pagep, void **fsdata)
+static int ext2_write_end(struct file *file, struct address_space *mapping,
+ loff_t pos, unsigned len, unsigned copied,
+ struct page *page, void *fsdata)
{
- *pagep = NULL;
- return __ext2_write_begin(file, mapping, pos, len, flags, pagep,fsdata);
+ int ret;
+
+ ret = generic_write_end(file, mapping, pos, len, copied, page, fsdata);
+ if (ret < len)
+ ext2_write_failed(mapping, pos + len);
+ return ret;
}
static int
@@ -772,13 +829,13 @@ ext2_nobh_write_begin(struct file *file, struct address_space *mapping,
loff_t pos, unsigned len, unsigned flags,
struct page **pagep, void **fsdata)
{
- /*
- * Dir-in-pagecache still uses ext2_write_begin. Would have to rework
- * directory handling code to pass around offsets rather than struct
- * pages in order to make this work easily.
- */
- return nobh_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
- ext2_get_block);
+ int ret;
+
+ ret = nobh_write_begin(mapping, pos, len, flags, pagep, fsdata,
+ ext2_get_block);
+ if (ret < 0)
+ ext2_write_failed(mapping, pos + len);
+ return ret;
}
static int ext2_nobh_writepage(struct page *page,
@@ -793,14 +850,19 @@ static sector_t ext2_bmap(struct address_space *mapping, sector_t block)
}
static ssize_t
-ext2_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov,
- loff_t offset, unsigned long nr_segs)
+ext2_direct_IO(int rw, struct kiocb *iocb, struct iov_iter *iter,
+ loff_t offset)
{
struct file *file = iocb->ki_filp;
- struct inode *inode = file->f_mapping->host;
-
- return blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
- offset, nr_segs, ext2_get_block, NULL);
+ 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, ext2_get_block);
+ if (ret < 0 && (rw & WRITE))
+ ext2_write_failed(mapping, offset + count);
+ return ret;
}
static int
@@ -813,9 +875,8 @@ const struct address_space_operations ext2_aops = {
.readpage = ext2_readpage,
.readpages = ext2_readpages,
.writepage = ext2_writepage,
- .sync_page = block_sync_page,
.write_begin = ext2_write_begin,
- .write_end = generic_write_end,
+ .write_end = ext2_write_end,
.bmap = ext2_bmap,
.direct_IO = ext2_direct_IO,
.writepages = ext2_writepages,
@@ -833,7 +894,6 @@ const struct address_space_operations ext2_nobh_aops = {
.readpage = ext2_readpage,
.readpages = ext2_readpages,
.writepage = ext2_nobh_writepage,
- .sync_page = block_sync_page,
.write_begin = ext2_nobh_write_begin,
.write_end = nobh_write_end,
.bmap = ext2_bmap,
@@ -868,7 +928,7 @@ static inline int all_zeroes(__le32 *p, __le32 *q)
*
* When we do truncate() we may have to clean the ends of several indirect
* blocks but leave the blocks themselves alive. Block is partially
- * truncated if some data below the new i_size is refered from it (and
+ * truncated if some data below the new i_size is referred from it (and
* it is on the path to the first completely truncated data block, indeed).
* We have to free the top of that path along with everything to the right
* of the path. Since no allocation past the truncation point is possible
@@ -945,7 +1005,7 @@ no_top:
* @p: array of block numbers
* @q: points immediately past the end of array
*
- * We are freeing all blocks refered from that array (numbers are
+ * We are freeing all blocks referred from that array (numbers are
* stored as little-endian 32-bit) and updating @inode->i_blocks
* appropriately.
*/
@@ -964,8 +1024,8 @@ static inline void ext2_free_data(struct inode *inode, __le32 *p, __le32 *q)
else if (block_to_free == nr - count)
count++;
else {
- mark_inode_dirty(inode);
ext2_free_blocks (inode, block_to_free, count);
+ mark_inode_dirty(inode);
free_this:
block_to_free = nr;
count = 1;
@@ -973,8 +1033,8 @@ static inline void ext2_free_data(struct inode *inode, __le32 *p, __le32 *q)
}
}
if (count > 0) {
- mark_inode_dirty(inode);
ext2_free_blocks (inode, block_to_free, count);
+ mark_inode_dirty(inode);
}
}
@@ -985,7 +1045,7 @@ static inline void ext2_free_data(struct inode *inode, __le32 *p, __le32 *q)
* @q: pointer immediately past the end of array
* @depth: depth of the branches to free
*
- * We are freeing all blocks refered from these branches (numbers are
+ * We are freeing all blocks referred from these branches (numbers are
* stored as little-endian 32-bit) and updating @inode->i_blocks
* appropriately.
*/
@@ -1024,7 +1084,7 @@ static void ext2_free_branches(struct inode *inode, __le32 *p, __le32 *q, int de
ext2_free_data(inode, p, q);
}
-void ext2_truncate(struct inode *inode)
+static void __ext2_truncate_blocks(struct inode *inode, loff_t offset)
{
__le32 *i_data = EXT2_I(inode)->i_data;
struct ext2_inode_info *ei = EXT2_I(inode);
@@ -1036,27 +1096,8 @@ void ext2_truncate(struct inode *inode)
int n;
long iblock;
unsigned blocksize;
-
- if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
- S_ISLNK(inode->i_mode)))
- return;
- if (ext2_inode_is_fast_symlink(inode))
- return;
- if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
- return;
-
blocksize = inode->i_sb->s_blocksize;
- iblock = (inode->i_size + blocksize-1)
- >> EXT2_BLOCK_SIZE_BITS(inode->i_sb);
-
- if (mapping_is_xip(inode->i_mapping))
- xip_truncate_page(inode->i_mapping, inode->i_size);
- else if (test_opt(inode->i_sb, NOBH))
- nobh_truncate_page(inode->i_mapping,
- inode->i_size, ext2_get_block);
- else
- block_truncate_page(inode->i_mapping,
- inode->i_size, ext2_get_block);
+ iblock = (offset + blocksize-1) >> EXT2_BLOCK_SIZE_BITS(inode->i_sb);
n = ext2_block_to_path(inode, iblock, offsets, NULL);
if (n == 0)
@@ -1124,13 +1165,65 @@ do_indirects:
ext2_discard_reservation(inode);
mutex_unlock(&ei->truncate_mutex);
+}
+
+static void ext2_truncate_blocks(struct inode *inode, loff_t offset)
+{
+ /*
+ * XXX: it seems like a bug here that we don't allow
+ * IS_APPEND inode to have blocks-past-i_size trimmed off.
+ * review and fix this.
+ *
+ * Also would be nice to be able to handle IO errors and such,
+ * but that's probably too much to ask.
+ */
+ if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
+ S_ISLNK(inode->i_mode)))
+ return;
+ if (ext2_inode_is_fast_symlink(inode))
+ return;
+ if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
+ return;
+ __ext2_truncate_blocks(inode, offset);
+}
+
+static int ext2_setsize(struct inode *inode, loff_t newsize)
+{
+ int error;
+
+ if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
+ S_ISLNK(inode->i_mode)))
+ return -EINVAL;
+ if (ext2_inode_is_fast_symlink(inode))
+ return -EINVAL;
+ if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
+ return -EPERM;
+
+ inode_dio_wait(inode);
+
+ if (mapping_is_xip(inode->i_mapping))
+ error = xip_truncate_page(inode->i_mapping, newsize);
+ else if (test_opt(inode->i_sb, NOBH))
+ error = nobh_truncate_page(inode->i_mapping,
+ newsize, ext2_get_block);
+ else
+ error = block_truncate_page(inode->i_mapping,
+ newsize, ext2_get_block);
+ if (error)
+ return error;
+
+ truncate_setsize(inode, newsize);
+ __ext2_truncate_blocks(inode, newsize);
+
inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC;
if (inode_needs_sync(inode)) {
sync_mapping_buffers(inode->i_mapping);
- ext2_sync_inode (inode);
+ sync_inode_metadata(inode, 1);
} else {
mark_inode_dirty(inode);
}
+
+ return 0;
}
static struct ext2_inode *ext2_get_inode(struct super_block *sb, ino_t ino,
@@ -1220,6 +1313,8 @@ struct inode *ext2_iget (struct super_block *sb, unsigned long ino)
struct inode *inode;
long ret = -EIO;
int n;
+ uid_t i_uid;
+ gid_t i_gid;
inode = iget_locked(sb, ino);
if (!inode)
@@ -1237,13 +1332,15 @@ struct inode *ext2_iget (struct super_block *sb, unsigned long ino)
}
inode->i_mode = le16_to_cpu(raw_inode->i_mode);
- inode->i_uid = (uid_t)le16_to_cpu(raw_inode->i_uid_low);
- inode->i_gid = (gid_t)le16_to_cpu(raw_inode->i_gid_low);
+ i_uid = (uid_t)le16_to_cpu(raw_inode->i_uid_low);
+ i_gid = (gid_t)le16_to_cpu(raw_inode->i_gid_low);
if (!(test_opt (inode->i_sb, NO_UID32))) {
- inode->i_uid |= le16_to_cpu(raw_inode->i_uid_high) << 16;
- inode->i_gid |= le16_to_cpu(raw_inode->i_gid_high) << 16;
+ i_uid |= le16_to_cpu(raw_inode->i_uid_high) << 16;
+ i_gid |= le16_to_cpu(raw_inode->i_gid_high) << 16;
}
- inode->i_nlink = le16_to_cpu(raw_inode->i_links_count);
+ i_uid_write(inode, i_uid);
+ i_gid_write(inode, i_gid);
+ set_nlink(inode, le16_to_cpu(raw_inode->i_links_count));
inode->i_size = le32_to_cpu(raw_inode->i_size);
inode->i_atime.tv_sec = (signed)le32_to_cpu(raw_inode->i_atime);
inode->i_ctime.tv_sec = (signed)le32_to_cpu(raw_inode->i_ctime);
@@ -1335,13 +1432,13 @@ bad_inode:
return ERR_PTR(ret);
}
-int ext2_write_inode(struct inode *inode, int do_sync)
+static int __ext2_write_inode(struct inode *inode, int do_sync)
{
struct ext2_inode_info *ei = EXT2_I(inode);
struct super_block *sb = inode->i_sb;
ino_t ino = inode->i_ino;
- uid_t uid = inode->i_uid;
- gid_t gid = inode->i_gid;
+ uid_t uid = i_uid_read(inode);
+ gid_t gid = i_gid_read(inode);
struct buffer_head * bh;
struct ext2_inode * raw_inode = ext2_get_inode(sb, ino, &bh);
int n;
@@ -1402,11 +1499,11 @@ int ext2_write_inode(struct inode *inode, int do_sync)
/* If this is the first large file
* created, add a flag to the superblock.
*/
- lock_kernel();
+ spin_lock(&EXT2_SB(sb)->s_lock);
ext2_update_dynamic_rev(sb);
EXT2_SET_RO_COMPAT_FEATURE(sb,
EXT2_FEATURE_RO_COMPAT_LARGE_FILE);
- unlock_kernel();
+ spin_unlock(&EXT2_SB(sb)->s_lock);
ext2_write_super(sb);
}
}
@@ -1440,13 +1537,9 @@ int ext2_write_inode(struct inode *inode, int do_sync)
return err;
}
-int ext2_sync_inode(struct inode *inode)
+int ext2_write_inode(struct inode *inode, struct writeback_control *wbc)
{
- struct writeback_control wbc = {
- .sync_mode = WB_SYNC_ALL,
- .nr_to_write = 0, /* sys_fsync did this */
- };
- return sync_inode(inode, &wbc);
+ return __ext2_write_inode(inode, wbc->sync_mode == WB_SYNC_ALL);
}
int ext2_setattr(struct dentry *dentry, struct iattr *iattr)
@@ -1457,14 +1550,24 @@ int ext2_setattr(struct dentry *dentry, struct iattr *iattr)
error = inode_change_ok(inode, iattr);
if (error)
return error;
- if ((iattr->ia_valid & ATTR_UID && iattr->ia_uid != inode->i_uid) ||
- (iattr->ia_valid & ATTR_GID && iattr->ia_gid != inode->i_gid)) {
- error = vfs_dq_transfer(inode, iattr) ? -EDQUOT : 0;
+
+ if (is_quota_modification(inode, iattr))
+ dquot_initialize(inode);
+ if ((iattr->ia_valid & ATTR_UID && !uid_eq(iattr->ia_uid, inode->i_uid)) ||
+ (iattr->ia_valid & ATTR_GID && !gid_eq(iattr->ia_gid, inode->i_gid))) {
+ error = dquot_transfer(inode, iattr);
if (error)
return error;
}
- error = inode_setattr(inode, iattr);
- if (!error && (iattr->ia_valid & ATTR_MODE))
- error = ext2_acl_chmod(inode);
+ if (iattr->ia_valid & ATTR_SIZE && iattr->ia_size != inode->i_size) {
+ error = ext2_setsize(inode, iattr->ia_size);
+ if (error)
+ return error;
+ }
+ setattr_copy(inode, iattr);
+ if (iattr->ia_valid & ATTR_MODE)
+ error = posix_acl_chmod(inode, inode->i_mode);
+ mark_inode_dirty(inode);
+
return error;
}
diff --git a/fs/ext2/ioctl.c b/fs/ext2/ioctl.c
index e7431309bdc..5d46c09863f 100644
--- a/fs/ext2/ioctl.c
+++ b/fs/ext2/ioctl.c
@@ -19,7 +19,7 @@
long ext2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
- struct inode *inode = filp->f_dentry->d_inode;
+ struct inode *inode = file_inode(filp);
struct ext2_inode_info *ei = EXT2_I(inode);
unsigned int flags;
unsigned short rsv_window_size;
@@ -35,11 +35,11 @@ long ext2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
case EXT2_IOC_SETFLAGS: {
unsigned int oldflags;
- ret = mnt_want_write(filp->f_path.mnt);
+ ret = mnt_want_write_file(filp);
if (ret)
return ret;
- if (!is_owner_or_cap(inode)) {
+ if (!inode_owner_or_capable(inode)) {
ret = -EACCES;
goto setflags_out;
}
@@ -77,31 +77,41 @@ long ext2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
flags = flags & EXT2_FL_USER_MODIFIABLE;
flags |= oldflags & ~EXT2_FL_USER_MODIFIABLE;
ei->i_flags = flags;
- mutex_unlock(&inode->i_mutex);
ext2_set_inode_flags(inode);
inode->i_ctime = CURRENT_TIME_SEC;
+ mutex_unlock(&inode->i_mutex);
+
mark_inode_dirty(inode);
setflags_out:
- mnt_drop_write(filp->f_path.mnt);
+ mnt_drop_write_file(filp);
return ret;
}
case EXT2_IOC_GETVERSION:
return put_user(inode->i_generation, (int __user *) arg);
- case EXT2_IOC_SETVERSION:
- if (!is_owner_or_cap(inode))
+ case EXT2_IOC_SETVERSION: {
+ __u32 generation;
+
+ if (!inode_owner_or_capable(inode))
return -EPERM;
- ret = mnt_want_write(filp->f_path.mnt);
+ ret = mnt_want_write_file(filp);
if (ret)
return ret;
- if (get_user(inode->i_generation, (int __user *) arg)) {
+ if (get_user(generation, (int __user *) arg)) {
ret = -EFAULT;
- } else {
- inode->i_ctime = CURRENT_TIME_SEC;
- mark_inode_dirty(inode);
+ goto setversion_out;
}
- mnt_drop_write(filp->f_path.mnt);
+
+ mutex_lock(&inode->i_mutex);
+ inode->i_ctime = CURRENT_TIME_SEC;
+ inode->i_generation = generation;
+ mutex_unlock(&inode->i_mutex);
+
+ mark_inode_dirty(inode);
+setversion_out:
+ mnt_drop_write_file(filp);
return ret;
+ }
case EXT2_IOC_GETRSVSZ:
if (test_opt(inode->i_sb, RESERVATION)
&& S_ISREG(inode->i_mode)
@@ -115,13 +125,13 @@ setflags_out:
if (!test_opt(inode->i_sb, RESERVATION) ||!S_ISREG(inode->i_mode))
return -ENOTTY;
- if (!is_owner_or_cap(inode))
+ if (!inode_owner_or_capable(inode))
return -EACCES;
if (get_user(rsv_window_size, (int __user *)arg))
return -EFAULT;
- ret = mnt_want_write(filp->f_path.mnt);
+ ret = mnt_want_write_file(filp);
if (ret)
return ret;
@@ -145,7 +155,7 @@ setflags_out:
rsv->rsv_goal_size = rsv_window_size;
}
mutex_unlock(&ei->truncate_mutex);
- mnt_drop_write(filp->f_path.mnt);
+ mnt_drop_write_file(filp);
return 0;
}
default:
diff --git a/fs/ext2/namei.c b/fs/ext2/namei.c
index dd7175ce560..c268d0af1db 100644
--- a/fs/ext2/namei.c
+++ b/fs/ext2/namei.c
@@ -31,6 +31,7 @@
*/
#include <linux/pagemap.h>
+#include <linux/quotaops.h>
#include "ext2.h"
#include "xattr.h"
#include "acl.h"
@@ -40,8 +41,8 @@ static inline int ext2_add_nondir(struct dentry *dentry, struct inode *inode)
{
int err = ext2_add_link(dentry, inode);
if (!err) {
- d_instantiate(dentry, inode);
unlock_new_inode(inode);
+ d_instantiate(dentry, inode);
return 0;
}
inode_dec_link_count(inode);
@@ -54,7 +55,7 @@ static inline int ext2_add_nondir(struct dentry *dentry, struct inode *inode)
* Methods themselves.
*/
-static struct dentry *ext2_lookup(struct inode * dir, struct dentry *dentry, struct nameidata *nd)
+static struct dentry *ext2_lookup(struct inode * dir, struct dentry *dentry, unsigned int flags)
{
struct inode * inode;
ino_t ino;
@@ -66,15 +67,11 @@ static struct dentry *ext2_lookup(struct inode * dir, struct dentry *dentry, str
inode = NULL;
if (ino) {
inode = ext2_iget(dir->i_sb, ino);
- if (unlikely(IS_ERR(inode))) {
- if (PTR_ERR(inode) == -ESTALE) {
- ext2_error(dir->i_sb, __func__,
- "deleted inode referenced: %lu",
- (unsigned long) ino);
- return ERR_PTR(-EIO);
- } else {
- return ERR_CAST(inode);
- }
+ if (inode == ERR_PTR(-ESTALE)) {
+ ext2_error(dir->i_sb, __func__,
+ "deleted inode referenced: %lu",
+ (unsigned long) ino);
+ return ERR_PTR(-EIO);
}
}
return d_splice_alias(inode, dentry);
@@ -82,7 +79,7 @@ static struct dentry *ext2_lookup(struct inode * dir, struct dentry *dentry, str
struct dentry *ext2_get_parent(struct dentry *child)
{
- struct qstr dotdot = {.name = "..", .len = 2};
+ struct qstr dotdot = QSTR_INIT("..", 2);
unsigned long ino = ext2_inode_by_name(child->d_inode, &dotdot);
if (!ino)
return ERR_PTR(-ENOENT);
@@ -97,29 +94,55 @@ struct dentry *ext2_get_parent(struct dentry *child)
* If the create succeeds, we fill in the inode information
* with d_instantiate().
*/
-static int ext2_create (struct inode * dir, struct dentry * dentry, int mode, struct nameidata *nd)
+static int ext2_create (struct inode * dir, struct dentry * dentry, umode_t mode, bool excl)
{
- struct inode * inode = ext2_new_inode (dir, mode);
- int err = PTR_ERR(inode);
- if (!IS_ERR(inode)) {
- inode->i_op = &ext2_file_inode_operations;
- if (ext2_use_xip(inode->i_sb)) {
- inode->i_mapping->a_ops = &ext2_aops_xip;
- inode->i_fop = &ext2_xip_file_operations;
- } else if (test_opt(inode->i_sb, NOBH)) {
- inode->i_mapping->a_ops = &ext2_nobh_aops;
- inode->i_fop = &ext2_file_operations;
- } else {
- inode->i_mapping->a_ops = &ext2_aops;
- inode->i_fop = &ext2_file_operations;
- }
- mark_inode_dirty(inode);
- err = ext2_add_nondir(dentry, inode);
+ struct inode *inode;
+
+ dquot_initialize(dir);
+
+ inode = ext2_new_inode(dir, mode, &dentry->d_name);
+ if (IS_ERR(inode))
+ return PTR_ERR(inode);
+
+ inode->i_op = &ext2_file_inode_operations;
+ if (ext2_use_xip(inode->i_sb)) {
+ inode->i_mapping->a_ops = &ext2_aops_xip;
+ inode->i_fop = &ext2_xip_file_operations;
+ } else if (test_opt(inode->i_sb, NOBH)) {
+ inode->i_mapping->a_ops = &ext2_nobh_aops;
+ inode->i_fop = &ext2_file_operations;
+ } else {
+ inode->i_mapping->a_ops = &ext2_aops;
+ inode->i_fop = &ext2_file_operations;
}
- return err;
+ mark_inode_dirty(inode);
+ return ext2_add_nondir(dentry, inode);
+}
+
+static int ext2_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode)
+{
+ struct inode *inode = ext2_new_inode(dir, mode, NULL);
+ if (IS_ERR(inode))
+ return PTR_ERR(inode);
+
+ inode->i_op = &ext2_file_inode_operations;
+ if (ext2_use_xip(inode->i_sb)) {
+ inode->i_mapping->a_ops = &ext2_aops_xip;
+ inode->i_fop = &ext2_xip_file_operations;
+ } else if (test_opt(inode->i_sb, NOBH)) {
+ inode->i_mapping->a_ops = &ext2_nobh_aops;
+ inode->i_fop = &ext2_file_operations;
+ } else {
+ inode->i_mapping->a_ops = &ext2_aops;
+ inode->i_fop = &ext2_file_operations;
+ }
+ mark_inode_dirty(inode);
+ d_tmpfile(dentry, inode);
+ unlock_new_inode(inode);
+ return 0;
}
-static int ext2_mknod (struct inode * dir, struct dentry *dentry, int mode, dev_t rdev)
+static int ext2_mknod (struct inode * dir, struct dentry *dentry, umode_t mode, dev_t rdev)
{
struct inode * inode;
int err;
@@ -127,7 +150,9 @@ static int ext2_mknod (struct inode * dir, struct dentry *dentry, int mode, dev_
if (!new_valid_dev(rdev))
return -EINVAL;
- inode = ext2_new_inode (dir, mode);
+ dquot_initialize(dir);
+
+ inode = ext2_new_inode (dir, mode, &dentry->d_name);
err = PTR_ERR(inode);
if (!IS_ERR(inode)) {
init_special_inode(inode, inode->i_mode, rdev);
@@ -151,7 +176,9 @@ static int ext2_symlink (struct inode * dir, struct dentry * dentry,
if (l > sb->s_blocksize)
goto out;
- inode = ext2_new_inode (dir, S_IFLNK | S_IRWXUGO);
+ dquot_initialize(dir);
+
+ inode = ext2_new_inode (dir, S_IFLNK | S_IRWXUGO, &dentry->d_name);
err = PTR_ERR(inode);
if (IS_ERR(inode))
goto out;
@@ -191,12 +218,11 @@ static int ext2_link (struct dentry * old_dentry, struct inode * dir,
struct inode *inode = old_dentry->d_inode;
int err;
- if (inode->i_nlink >= EXT2_LINK_MAX)
- return -EMLINK;
+ dquot_initialize(dir);
inode->i_ctime = CURRENT_TIME_SEC;
inode_inc_link_count(inode);
- atomic_inc(&inode->i_count);
+ ihold(inode);
err = ext2_add_link(dentry, inode);
if (!err) {
@@ -208,17 +234,16 @@ static int ext2_link (struct dentry * old_dentry, struct inode * dir,
return err;
}
-static int ext2_mkdir(struct inode * dir, struct dentry * dentry, int mode)
+static int ext2_mkdir(struct inode * dir, struct dentry * dentry, umode_t mode)
{
struct inode * inode;
- int err = -EMLINK;
+ int err;
- if (dir->i_nlink >= EXT2_LINK_MAX)
- goto out;
+ dquot_initialize(dir);
inode_inc_link_count(dir);
- inode = ext2_new_inode (dir, S_IFDIR | mode);
+ inode = ext2_new_inode(dir, S_IFDIR | mode, &dentry->d_name);
err = PTR_ERR(inode);
if (IS_ERR(inode))
goto out_dir;
@@ -240,8 +265,8 @@ static int ext2_mkdir(struct inode * dir, struct dentry * dentry, int mode)
if (err)
goto out_fail;
- d_instantiate(dentry, inode);
unlock_new_inode(inode);
+ d_instantiate(dentry, inode);
out:
return err;
@@ -262,6 +287,8 @@ static int ext2_unlink(struct inode * dir, struct dentry *dentry)
struct page * page;
int err = -ENOENT;
+ dquot_initialize(dir);
+
de = ext2_find_entry (dir, &dentry->d_name, &page);
if (!de)
goto out;
@@ -304,6 +331,9 @@ static int ext2_rename (struct inode * old_dir, struct dentry * old_dentry,
struct ext2_dir_entry_2 * old_de;
int err = -ENOENT;
+ dquot_initialize(old_dir);
+ dquot_initialize(new_dir);
+
old_de = ext2_find_entry (old_dir, &old_dentry->d_name, &old_page);
if (!old_de)
goto out;
@@ -327,24 +357,15 @@ static int ext2_rename (struct inode * old_dir, struct dentry * old_dentry,
new_de = ext2_find_entry (new_dir, &new_dentry->d_name, &new_page);
if (!new_de)
goto out_dir;
- inode_inc_link_count(old_inode);
ext2_set_link(new_dir, new_de, new_page, old_inode, 1);
new_inode->i_ctime = CURRENT_TIME_SEC;
if (dir_de)
drop_nlink(new_inode);
inode_dec_link_count(new_inode);
} else {
- if (dir_de) {
- err = -EMLINK;
- if (new_dir->i_nlink >= EXT2_LINK_MAX)
- goto out_dir;
- }
- inode_inc_link_count(old_inode);
err = ext2_add_link(new_dentry, old_inode);
- if (err) {
- inode_dec_link_count(old_inode);
+ if (err)
goto out_dir;
- }
if (dir_de)
inode_inc_link_count(new_dir);
}
@@ -352,12 +373,11 @@ static int ext2_rename (struct inode * old_dir, struct dentry * old_dentry,
/*
* Like most other Unix systems, set the ctime for inodes on a
* rename.
- * inode_dec_link_count() will mark the inode dirty.
*/
old_inode->i_ctime = CURRENT_TIME_SEC;
+ mark_inode_dirty(old_inode);
ext2_delete_entry (old_de, old_page);
- inode_dec_link_count(old_inode);
if (dir_de) {
if (old_dir != new_dir)
@@ -400,7 +420,9 @@ const struct inode_operations ext2_dir_inode_operations = {
.removexattr = generic_removexattr,
#endif
.setattr = ext2_setattr,
- .check_acl = ext2_check_acl,
+ .get_acl = ext2_get_acl,
+ .set_acl = ext2_set_acl,
+ .tmpfile = ext2_tmpfile,
};
const struct inode_operations ext2_special_inode_operations = {
@@ -411,5 +433,6 @@ const struct inode_operations ext2_special_inode_operations = {
.removexattr = generic_removexattr,
#endif
.setattr = ext2_setattr,
- .check_acl = ext2_check_acl,
+ .get_acl = ext2_get_acl,
+ .set_acl = ext2_set_acl,
};
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index f9cb54a585c..3750031cfa2 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -26,7 +26,6 @@
#include <linux/random.h>
#include <linux/buffer_head.h>
#include <linux/exportfs.h>
-#include <linux/smp_lock.h>
#include <linux/vfs.h>
#include <linux/seq_file.h>
#include <linux/mount.h>
@@ -39,28 +38,37 @@
#include "xip.h"
static void ext2_sync_super(struct super_block *sb,
- struct ext2_super_block *es);
+ struct ext2_super_block *es, int wait);
static int ext2_remount (struct super_block * sb, int * flags, char * data);
static int ext2_statfs (struct dentry * dentry, struct kstatfs * buf);
static int ext2_sync_fs(struct super_block *sb, int wait);
+static int ext2_freeze(struct super_block *sb);
+static int ext2_unfreeze(struct super_block *sb);
-void ext2_error (struct super_block * sb, const char * function,
- const char * fmt, ...)
+void ext2_error(struct super_block *sb, const char *function,
+ const char *fmt, ...)
{
+ struct va_format vaf;
va_list args;
struct ext2_sb_info *sbi = EXT2_SB(sb);
struct ext2_super_block *es = sbi->s_es;
if (!(sb->s_flags & MS_RDONLY)) {
+ spin_lock(&sbi->s_lock);
sbi->s_mount_state |= EXT2_ERROR_FS;
es->s_state |= cpu_to_le16(EXT2_ERROR_FS);
- ext2_sync_super(sb, es);
+ spin_unlock(&sbi->s_lock);
+ ext2_sync_super(sb, es, 1);
}
va_start(args, fmt);
- printk(KERN_CRIT "EXT2-fs (%s): error: %s: ", sb->s_id, function);
- vprintk(fmt, args);
- printk("\n");
+
+ vaf.fmt = fmt;
+ vaf.va = &args;
+
+ printk(KERN_CRIT "EXT2-fs (%s): error: %s: %pV\n",
+ sb->s_id, function, &vaf);
+
va_end(args);
if (test_opt(sb, ERRORS_PANIC))
@@ -75,15 +83,22 @@ void ext2_error (struct super_block * sb, const char * function,
void ext2_msg(struct super_block *sb, const char *prefix,
const char *fmt, ...)
{
+ struct va_format vaf;
va_list args;
va_start(args, fmt);
- printk("%sEXT2-fs (%s): ", prefix, sb->s_id);
- vprintk(fmt, args);
- printk("\n");
+
+ vaf.fmt = fmt;
+ vaf.va = &args;
+
+ printk("%sEXT2-fs (%s): %pV\n", prefix, sb->s_id, &vaf);
+
va_end(args);
}
+/*
+ * This must be called with sbi->s_lock held.
+ */
void ext2_update_dynamic_rev(struct super_block *sb)
{
struct ext2_super_block *es = EXT2_SB(sb)->s_es;
@@ -115,17 +130,16 @@ static void ext2_put_super (struct super_block * sb)
int i;
struct ext2_sb_info *sbi = EXT2_SB(sb);
- lock_kernel();
-
- if (sb->s_dirt)
- ext2_write_super(sb);
+ dquot_disable(sb, -1, DQUOT_USAGE_ENABLED | DQUOT_LIMITS_ENABLED);
ext2_xattr_put_super(sb);
if (!(sb->s_flags & MS_RDONLY)) {
struct ext2_super_block *es = sbi->s_es;
+ spin_lock(&sbi->s_lock);
es->s_state = cpu_to_le16(sbi->s_mount_state);
- ext2_sync_super(sb, es);
+ spin_unlock(&sbi->s_lock);
+ ext2_sync_super(sb, es, 1);
}
db_count = sbi->s_gdb_count;
for (i = 0; i < db_count; i++)
@@ -140,8 +154,6 @@ static void ext2_put_super (struct super_block * sb)
sb->s_fs_info = NULL;
kfree(sbi->s_blockgroup_lock);
kfree(sbi);
-
- unlock_kernel();
}
static struct kmem_cache * ext2_inode_cachep;
@@ -157,11 +169,17 @@ static struct inode *ext2_alloc_inode(struct super_block *sb)
return &ei->vfs_inode;
}
-static void ext2_destroy_inode(struct inode *inode)
+static void ext2_i_callback(struct rcu_head *head)
{
+ struct inode *inode = container_of(head, struct inode, i_rcu);
kmem_cache_free(ext2_inode_cachep, EXT2_I(inode));
}
+static void ext2_destroy_inode(struct inode *inode)
+{
+ call_rcu(&inode->i_rcu, ext2_i_callback);
+}
+
static void init_once(void *foo)
{
struct ext2_inode_info *ei = (struct ext2_inode_info *) foo;
@@ -174,7 +192,7 @@ static void init_once(void *foo)
inode_init_once(&ei->vfs_inode);
}
-static int init_inodecache(void)
+static int __init init_inodecache(void)
{
ext2_inode_cachep = kmem_cache_create("ext2_inode_cache",
sizeof(struct ext2_inode_info),
@@ -188,25 +206,22 @@ 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(ext2_inode_cachep);
}
-static void ext2_clear_inode(struct inode *inode)
+static int ext2_show_options(struct seq_file *seq, struct dentry *root)
{
- struct ext2_block_alloc_info *rsv = EXT2_I(inode)->i_block_alloc_info;
- ext2_discard_reservation(inode);
- EXT2_I(inode)->i_block_alloc_info = NULL;
- if (unlikely(rsv))
- kfree(rsv);
-}
-
-static int ext2_show_options(struct seq_file *seq, struct vfsmount *vfs)
-{
- struct super_block *sb = vfs->mnt_sb;
+ struct super_block *sb = root->d_sb;
struct ext2_sb_info *sbi = EXT2_SB(sb);
struct ext2_super_block *es = sbi->s_es;
unsigned long def_mount_opts;
+ spin_lock(&sbi->s_lock);
def_mount_opts = le32_to_cpu(es->s_default_mount_opts);
if (sbi->s_sb_block != 1)
@@ -217,13 +232,15 @@ static int ext2_show_options(struct seq_file *seq, struct vfsmount *vfs)
seq_puts(seq, ",grpid");
if (!test_opt(sb, GRPID) && (def_mount_opts & EXT2_DEFM_BSDGROUPS))
seq_puts(seq, ",nogrpid");
- if (sbi->s_resuid != EXT2_DEF_RESUID ||
+ if (!uid_eq(sbi->s_resuid, make_kuid(&init_user_ns, EXT2_DEF_RESUID)) ||
le16_to_cpu(es->s_def_resuid) != EXT2_DEF_RESUID) {
- seq_printf(seq, ",resuid=%u", sbi->s_resuid);
+ seq_printf(seq, ",resuid=%u",
+ from_kuid_munged(&init_user_ns, sbi->s_resuid));
}
- if (sbi->s_resgid != EXT2_DEF_RESGID ||
+ if (!gid_eq(sbi->s_resgid, make_kgid(&init_user_ns, EXT2_DEF_RESGID)) ||
le16_to_cpu(es->s_def_resgid) != EXT2_DEF_RESGID) {
- seq_printf(seq, ",resgid=%u", sbi->s_resgid);
+ seq_printf(seq, ",resgid=%u",
+ from_kgid_munged(&init_user_ns, sbi->s_resgid));
}
if (test_opt(sb, ERRORS_RO)) {
int def_errors = le16_to_cpu(es->s_errors);
@@ -279,6 +296,7 @@ static int ext2_show_options(struct seq_file *seq, struct vfsmount *vfs)
if (!test_opt(sb, RESERVATION))
seq_puts(seq, ",noreservation");
+ spin_unlock(&sbi->s_lock);
return 0;
}
@@ -291,13 +309,13 @@ static const struct super_operations ext2_sops = {
.alloc_inode = ext2_alloc_inode,
.destroy_inode = ext2_destroy_inode,
.write_inode = ext2_write_inode,
- .delete_inode = ext2_delete_inode,
+ .evict_inode = ext2_evict_inode,
.put_super = ext2_put_super,
- .write_super = ext2_write_super,
.sync_fs = ext2_sync_fs,
+ .freeze_fs = ext2_freeze,
+ .unfreeze_fs = ext2_unfreeze,
.statfs = ext2_statfs,
.remount_fs = ext2_remount,
- .clear_inode = ext2_clear_inode,
.show_options = ext2_show_options,
#ifdef CONFIG_QUOTA
.quota_read = ext2_quota_read,
@@ -315,10 +333,10 @@ static struct inode *ext2_nfs_get_inode(struct super_block *sb,
if (ino > le32_to_cpu(EXT2_SB(sb)->s_es->s_inodes_count))
return ERR_PTR(-ESTALE);
- /* iget isn't really right if the inode is currently unallocated!!
- * ext2_read_inode currently does appropriate checks, but
- * it might be "neater" to call ext2_get_inode first and check
- * if the inode is valid.....
+ /*
+ * ext2_iget isn't quite right if the inode is currently unallocated!
+ * However ext2_iget currently does appropriate checks to handle stale
+ * inodes so everything is OK.
*/
inode = ext2_iget(sb, ino);
if (IS_ERR(inode))
@@ -345,11 +363,6 @@ static struct dentry *ext2_fh_to_parent(struct super_block *sb, struct fid *fid,
ext2_nfs_get_inode);
}
-/* Yes, most of these are left as NULL!!
- * A NULL value implies the default, which works with ext2-like file
- * systems, but can be improved upon.
- * Currently only get_parent is required.
- */
static const struct export_operations ext2_export_ops = {
.fh_to_dentry = ext2_fh_to_dentry,
.fh_to_parent = ext2_fh_to_parent,
@@ -425,6 +438,8 @@ static int parse_options(char *options, struct super_block *sb)
struct ext2_sb_info *sbi = EXT2_SB(sb);
substring_t args[MAX_OPT_ARGS];
int option;
+ kuid_t uid;
+ kgid_t gid;
if (!options)
return 1;
@@ -451,12 +466,23 @@ static int parse_options(char *options, struct super_block *sb)
case Opt_resuid:
if (match_int(&args[0], &option))
return 0;
- sbi->s_resuid = option;
+ uid = make_kuid(current_user_ns(), option);
+ if (!uid_valid(uid)) {
+ ext2_msg(sb, KERN_ERR, "Invalid uid value %d", option);
+ return 0;
+
+ }
+ sbi->s_resuid = uid;
break;
case Opt_resgid:
if (match_int(&args[0], &option))
return 0;
- sbi->s_resgid = option;
+ gid = make_kgid(current_user_ns(), option);
+ if (!gid_valid(gid)) {
+ ext2_msg(sb, KERN_ERR, "Invalid gid value %d", option);
+ return 0;
+ }
+ sbi->s_resgid = gid;
break;
case Opt_sb:
/* handled by get_sb_block() instead of here */
@@ -604,7 +630,6 @@ static int ext2_setup_super (struct super_block * sb,
if (!le16_to_cpu(es->s_max_mnt_count))
es->s_max_mnt_count = cpu_to_le16(EXT2_DFL_MAX_MNT_COUNT);
le16_add_cpu(&es->s_mnt_count, 1);
- ext2_write_super(sb);
if (test_opt (sb, DEBUG))
ext2_msg(sb, KERN_INFO, "%s, %s, bs=%lu, fs=%lu, gc=%lu, "
"bpg=%lu, ipg=%lu, mo=%04lx]",
@@ -752,19 +777,22 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
__le32 features;
int err;
+ err = -ENOMEM;
sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
if (!sbi)
- return -ENOMEM;
+ goto failed;
sbi->s_blockgroup_lock =
kzalloc(sizeof(struct blockgroup_lock), GFP_KERNEL);
if (!sbi->s_blockgroup_lock) {
kfree(sbi);
- return -ENOMEM;
+ goto failed;
}
sb->s_fs_info = sbi;
sbi->s_sb_block = sb_block;
+ spin_lock_init(&sbi->s_lock);
+
/*
* See what the current blocksize for the device is, and
* use that as the blocksize. Otherwise (or if the blocksize
@@ -828,8 +856,8 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
else
set_opt(sbi->s_mount_opt, ERRORS_RO);
- sbi->s_resuid = le16_to_cpu(es->s_def_resuid);
- sbi->s_resgid = le16_to_cpu(es->s_def_resgid);
+ sbi->s_resuid = make_kuid(&init_user_ns, le16_to_cpu(es->s_def_resuid));
+ sbi->s_resgid = make_kgid(&init_user_ns, le16_to_cpu(es->s_def_resgid));
set_opt(sbi->s_mount_opt, RESERVATION);
@@ -884,7 +912,8 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
brelse(bh);
if (!sb_set_blocksize(sb, blocksize)) {
- ext2_msg(sb, KERN_ERR, "error: blocksize is too small");
+ ext2_msg(sb, KERN_ERR,
+ "error: bad blocksize %d", blocksize);
goto failed_sbi;
}
@@ -905,6 +934,7 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
}
sb->s_maxbytes = ext2_max_size(sb->s_blocksize_bits);
+ sb->s_max_links = EXT2_LINK_MAX;
if (le32_to_cpu(es->s_rev_level) == EXT2_GOOD_OLD_REV) {
sbi->s_inode_size = EXT2_GOOD_OLD_INODE_SIZE;
@@ -1056,6 +1086,12 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
sb->s_op = &ext2_sops;
sb->s_export_op = &ext2_export_ops;
sb->s_xattr = ext2_xattr_handlers;
+
+#ifdef CONFIG_QUOTA
+ sb->dq_op = &dquot_operations;
+ sb->s_qcop = &dquot_quotactl_ops;
+#endif
+
root = ext2_iget(sb, EXT2_ROOT_INO);
if (IS_ERR(root)) {
ret = PTR_ERR(root);
@@ -1067,9 +1103,8 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
goto failed_mount3;
}
- sb->s_root = d_alloc_root(root);
+ sb->s_root = d_make_root(root);
if (!sb->s_root) {
- iput(root);
ext2_msg(sb, KERN_ERR, "error: get root inode failed");
ret = -ENOMEM;
goto failed_mount3;
@@ -1077,7 +1112,9 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
if (EXT2_HAS_COMPAT_FEATURE(sb, EXT3_FEATURE_COMPAT_HAS_JOURNAL))
ext2_msg(sb, KERN_WARNING,
"warning: mounting ext3 filesystem as ext2");
- ext2_setup_super (sb, es, sb->s_flags & MS_RDONLY);
+ if (ext2_setup_super (sb, es, sb->s_flags & MS_RDONLY))
+ sb->s_flags |= MS_RDONLY;
+ ext2_write_super(sb);
return 0;
cantfind_ext2:
@@ -1102,6 +1139,7 @@ failed_sbi:
sb->s_fs_info = NULL;
kfree(sbi->s_blockgroup_lock);
kfree(sbi);
+failed:
return ret;
}
@@ -1118,31 +1156,26 @@ static void ext2_clear_super_error(struct super_block *sb)
* be remapped. Nothing we can do but to retry the
* write and hope for the best.
*/
- printk(KERN_ERR "EXT2-fs: %s previous I/O error to "
- "superblock detected", sb->s_id);
+ ext2_msg(sb, KERN_ERR,
+ "previous I/O error to superblock detected\n");
clear_buffer_write_io_error(sbh);
set_buffer_uptodate(sbh);
}
}
-static void ext2_commit_super (struct super_block * sb,
- struct ext2_super_block * es)
-{
- ext2_clear_super_error(sb);
- es->s_wtime = cpu_to_le32(get_seconds());
- mark_buffer_dirty(EXT2_SB(sb)->s_sbh);
- sb->s_dirt = 0;
-}
-
-static void ext2_sync_super(struct super_block *sb, struct ext2_super_block *es)
+static void ext2_sync_super(struct super_block *sb, struct ext2_super_block *es,
+ int wait)
{
ext2_clear_super_error(sb);
+ spin_lock(&EXT2_SB(sb)->s_lock);
es->s_free_blocks_count = cpu_to_le32(ext2_count_free_blocks(sb));
es->s_free_inodes_count = cpu_to_le32(ext2_count_free_inodes(sb));
es->s_wtime = cpu_to_le32(get_seconds());
+ /* unlock before we do IO */
+ spin_unlock(&EXT2_SB(sb)->s_lock);
mark_buffer_dirty(EXT2_SB(sb)->s_sbh);
- sync_dirty_buffer(EXT2_SB(sb)->s_sbh);
- sb->s_dirt = 0;
+ if (wait)
+ sync_dirty_buffer(EXT2_SB(sb)->s_sbh);
}
/*
@@ -1155,53 +1188,61 @@ static void ext2_sync_super(struct super_block *sb, struct ext2_super_block *es)
* may have been checked while mounted and e2fsck may have
* set s_state to EXT2_VALID_FS after some corrections.
*/
-
static int ext2_sync_fs(struct super_block *sb, int wait)
{
+ struct ext2_sb_info *sbi = EXT2_SB(sb);
struct ext2_super_block *es = EXT2_SB(sb)->s_es;
- struct buffer_head *sbh = EXT2_SB(sb)->s_sbh;
- lock_kernel();
- if (buffer_write_io_error(sbh)) {
- /*
- * Oh, dear. A previous attempt to write the
- * superblock failed. This could happen because the
- * USB device was yanked out. Or it could happen to
- * be a transient write error and maybe the block will
- * be remapped. Nothing we can do but to retry the
- * write and hope for the best.
- */
- ext2_msg(sb, KERN_ERR,
- "previous I/O error to superblock detected\n");
- clear_buffer_write_io_error(sbh);
- set_buffer_uptodate(sbh);
- }
+ /*
+ * Write quota structures to quota file, sync_blockdev() will write
+ * them to disk later
+ */
+ dquot_writeback_dquots(sb, -1);
+ spin_lock(&sbi->s_lock);
if (es->s_state & cpu_to_le16(EXT2_VALID_FS)) {
ext2_debug("setting valid to 0\n");
es->s_state &= cpu_to_le16(~EXT2_VALID_FS);
- es->s_free_blocks_count =
- cpu_to_le32(ext2_count_free_blocks(sb));
- es->s_free_inodes_count =
- cpu_to_le32(ext2_count_free_inodes(sb));
- es->s_mtime = cpu_to_le32(get_seconds());
- ext2_sync_super(sb, es);
- } else {
- ext2_commit_super(sb, es);
}
- sb->s_dirt = 0;
- unlock_kernel();
+ spin_unlock(&sbi->s_lock);
+ ext2_sync_super(sb, es, wait);
+ return 0;
+}
+
+static int ext2_freeze(struct super_block *sb)
+{
+ struct ext2_sb_info *sbi = EXT2_SB(sb);
+
+ /*
+ * Open but unlinked files present? Keep EXT2_VALID_FS flag cleared
+ * because we have unattached inodes and thus filesystem is not fully
+ * consistent.
+ */
+ if (atomic_long_read(&sb->s_remove_count)) {
+ ext2_sync_fs(sb, 1);
+ return 0;
+ }
+ /* Set EXT2_FS_VALID flag */
+ spin_lock(&sbi->s_lock);
+ sbi->s_es->s_state = cpu_to_le16(sbi->s_mount_state);
+ spin_unlock(&sbi->s_lock);
+ ext2_sync_super(sb, sbi->s_es, 1);
return 0;
}
+static int ext2_unfreeze(struct super_block *sb)
+{
+ /* Just write sb to clear EXT2_VALID_FS flag */
+ ext2_write_super(sb);
+
+ return 0;
+}
void ext2_write_super(struct super_block *sb)
{
if (!(sb->s_flags & MS_RDONLY))
ext2_sync_fs(sb, 1);
- else
- sb->s_dirt = 0;
}
static int ext2_remount (struct super_block * sb, int * flags, char * data)
@@ -1213,7 +1254,8 @@ static int ext2_remount (struct super_block * sb, int * flags, char * data)
unsigned long old_sb_flags;
int err;
- lock_kernel();
+ sync_filesystem(sb);
+ spin_lock(&sbi->s_lock);
/* Store the old options */
old_sb_flags = sb->s_flags;
@@ -1243,30 +1285,38 @@ static int ext2_remount (struct super_block * sb, int * flags, char * data)
}
es = sbi->s_es;
- if (((sbi->s_mount_opt & EXT2_MOUNT_XIP) !=
- (old_mount_opt & EXT2_MOUNT_XIP)) &&
- invalidate_inodes(sb)) {
+ if ((sbi->s_mount_opt ^ old_mount_opt) & EXT2_MOUNT_XIP) {
ext2_msg(sb, KERN_WARNING, "warning: refusing change of "
"xip flag with busy inodes while remounting");
sbi->s_mount_opt &= ~EXT2_MOUNT_XIP;
sbi->s_mount_opt |= old_mount_opt & EXT2_MOUNT_XIP;
}
if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) {
- unlock_kernel();
+ spin_unlock(&sbi->s_lock);
return 0;
}
if (*flags & MS_RDONLY) {
if (le16_to_cpu(es->s_state) & EXT2_VALID_FS ||
!(sbi->s_mount_state & EXT2_VALID_FS)) {
- unlock_kernel();
+ spin_unlock(&sbi->s_lock);
return 0;
}
+
/*
* OK, we are remounting a valid rw partition rdonly, so set
* the rdonly flag and then mark the partition as valid again.
*/
es->s_state = cpu_to_le16(sbi->s_mount_state);
es->s_mtime = cpu_to_le32(get_seconds());
+ spin_unlock(&sbi->s_lock);
+
+ err = dquot_suspend(sb, -1);
+ if (err < 0) {
+ spin_lock(&sbi->s_lock);
+ goto restore_opts;
+ }
+
+ ext2_sync_super(sb, es, 1);
} else {
__le32 ret = EXT2_HAS_RO_COMPAT_FEATURE(sb,
~EXT2_FEATURE_RO_COMPAT_SUPP);
@@ -1286,16 +1336,20 @@ static int ext2_remount (struct super_block * sb, int * flags, char * data)
sbi->s_mount_state = le16_to_cpu(es->s_state);
if (!ext2_setup_super (sb, es, 0))
sb->s_flags &= ~MS_RDONLY;
+ spin_unlock(&sbi->s_lock);
+
+ ext2_write_super(sb);
+
+ dquot_resume(sb, -1);
}
- ext2_sync_super(sb, es);
- unlock_kernel();
+
return 0;
restore_opts:
sbi->s_mount_opt = old_opts.s_mount_opt;
sbi->s_resuid = old_opts.s_resuid;
sbi->s_resgid = old_opts.s_resgid;
sb->s_flags = old_sb_flags;
- unlock_kernel();
+ spin_unlock(&sbi->s_lock);
return err;
}
@@ -1306,6 +1360,8 @@ static int ext2_statfs (struct dentry * dentry, struct kstatfs * buf)
struct ext2_super_block *es = sbi->s_es;
u64 fsid;
+ spin_lock(&sbi->s_lock);
+
if (test_opt (sb, MINIX_DF))
sbi->s_overhead_last = 0;
else if (sbi->s_blocks_last != le32_to_cpu(es->s_blocks_count)) {
@@ -1360,20 +1416,21 @@ static int ext2_statfs (struct dentry * dentry, struct kstatfs * buf)
le64_to_cpup((void *)es->s_uuid + sizeof(u64));
buf->f_fsid.val[0] = fsid & 0xFFFFFFFFUL;
buf->f_fsid.val[1] = (fsid >> 32) & 0xFFFFFFFFUL;
+ spin_unlock(&sbi->s_lock);
return 0;
}
-static int ext2_get_sb(struct file_system_type *fs_type,
- int flags, const char *dev_name, void *data, struct vfsmount *mnt)
+static struct dentry *ext2_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, ext2_fill_super, mnt);
+ return mount_bdev(fs_type, flags, dev_name, data, ext2_fill_super);
}
#ifdef CONFIG_QUOTA
/* Read data from quotafile - avoid pagecache and such because we cannot afford
* acquiring the locks... As quota files are never truncated and quota code
- * itself serializes the operations (and noone else should touch the files)
+ * itself serializes the operations (and no one else should touch the files)
* we don't have to be afraid of races */
static ssize_t ext2_quota_read(struct super_block *sb, int type, char *data,
size_t len, loff_t off)
@@ -1432,12 +1489,12 @@ static ssize_t ext2_quota_write(struct super_block *sb, int type,
struct buffer_head tmp_bh;
struct buffer_head *bh;
- mutex_lock_nested(&inode->i_mutex, I_MUTEX_QUOTA);
while (towrite > 0) {
tocopy = sb->s_blocksize - offset < towrite ?
sb->s_blocksize - offset : towrite;
tmp_bh.b_state = 0;
+ tmp_bh.b_size = sb->s_blocksize;
err = ext2_get_block(inode, blk, &tmp_bh, 1);
if (err < 0)
goto out;
@@ -1445,7 +1502,7 @@ static ssize_t ext2_quota_write(struct super_block *sb, int type,
bh = sb_bread(sb, tmp_bh.b_blocknr);
else
bh = sb_getblk(sb, tmp_bh.b_blocknr);
- if (!bh) {
+ if (unlikely(!bh)) {
err = -EIO;
goto out;
}
@@ -1462,16 +1519,13 @@ static ssize_t ext2_quota_write(struct super_block *sb, int type,
blk++;
}
out:
- if (len == towrite) {
- mutex_unlock(&inode->i_mutex);
+ if (len == towrite)
return err;
- }
if (inode->i_size < off+len-towrite)
i_size_write(inode, off+len-towrite);
inode->i_version++;
inode->i_mtime = inode->i_ctime = CURRENT_TIME;
mark_inode_dirty(inode);
- mutex_unlock(&inode->i_mutex);
return len - towrite;
}
@@ -1480,10 +1534,11 @@ out:
static struct file_system_type ext2_fs_type = {
.owner = THIS_MODULE,
.name = "ext2",
- .get_sb = ext2_get_sb,
+ .mount = ext2_mount,
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("ext2");
static int __init init_ext2_fs(void)
{
@@ -1511,5 +1566,8 @@ static void __exit exit_ext2_fs(void)
exit_ext2_xattr();
}
+MODULE_AUTHOR("Remy Card and others");
+MODULE_DESCRIPTION("Second Extended Filesystem");
+MODULE_LICENSE("GPL");
module_init(init_ext2_fs)
module_exit(exit_ext2_fs)
diff --git a/fs/ext2/symlink.c b/fs/ext2/symlink.c
index 4e2426e22bb..565cf817bbf 100644
--- a/fs/ext2/symlink.c
+++ b/fs/ext2/symlink.c
@@ -32,6 +32,7 @@ const struct inode_operations ext2_symlink_inode_operations = {
.readlink = generic_readlink,
.follow_link = page_follow_link_light,
.put_link = page_put_link,
+ .setattr = ext2_setattr,
#ifdef CONFIG_EXT2_FS_XATTR
.setxattr = generic_setxattr,
.getxattr = generic_getxattr,
@@ -43,6 +44,7 @@ const struct inode_operations ext2_symlink_inode_operations = {
const struct inode_operations ext2_fast_symlink_inode_operations = {
.readlink = generic_readlink,
.follow_link = ext2_follow_link,
+ .setattr = ext2_setattr,
#ifdef CONFIG_EXT2_FS_XATTR
.setxattr = generic_setxattr,
.getxattr = generic_getxattr,
diff --git a/fs/ext2/xattr.c b/fs/ext2/xattr.c
index 904f00642f8..91426141c33 100644
--- a/fs/ext2/xattr.c
+++ b/fs/ext2/xattr.c
@@ -35,7 +35,7 @@
* +------------------+
*
* The block header is followed by multiple entry descriptors. These entry
- * descriptors are variable in size, and alligned to EXT2_XATTR_PAD
+ * descriptors are variable in size, and aligned to EXT2_XATTR_PAD
* byte boundaries. The entry descriptors are sorted by attribute name,
* so that two extended attribute blocks can be compared efficiently.
*
@@ -54,7 +54,6 @@
*/
#include <linux/buffer_head.h>
-#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/mbcache.h>
@@ -101,11 +100,11 @@ static void ext2_xattr_rehash(struct ext2_xattr_header *,
static struct mb_cache *ext2_xattr_cache;
-static struct xattr_handler *ext2_xattr_handler_map[] = {
+static const struct xattr_handler *ext2_xattr_handler_map[] = {
[EXT2_XATTR_INDEX_USER] = &ext2_xattr_user_handler,
#ifdef CONFIG_EXT2_FS_POSIX_ACL
- [EXT2_XATTR_INDEX_POSIX_ACL_ACCESS] = &ext2_xattr_acl_access_handler,
- [EXT2_XATTR_INDEX_POSIX_ACL_DEFAULT] = &ext2_xattr_acl_default_handler,
+ [EXT2_XATTR_INDEX_POSIX_ACL_ACCESS] = &posix_acl_access_xattr_handler,
+ [EXT2_XATTR_INDEX_POSIX_ACL_DEFAULT] = &posix_acl_default_xattr_handler,
#endif
[EXT2_XATTR_INDEX_TRUSTED] = &ext2_xattr_trusted_handler,
#ifdef CONFIG_EXT2_FS_SECURITY
@@ -113,12 +112,12 @@ static struct xattr_handler *ext2_xattr_handler_map[] = {
#endif
};
-struct xattr_handler *ext2_xattr_handlers[] = {
+const struct xattr_handler *ext2_xattr_handlers[] = {
&ext2_xattr_user_handler,
&ext2_xattr_trusted_handler,
#ifdef CONFIG_EXT2_FS_POSIX_ACL
- &ext2_xattr_acl_access_handler,
- &ext2_xattr_acl_default_handler,
+ &posix_acl_access_xattr_handler,
+ &posix_acl_default_xattr_handler,
#endif
#ifdef CONFIG_EXT2_FS_SECURITY
&ext2_xattr_security_handler,
@@ -126,10 +125,10 @@ struct xattr_handler *ext2_xattr_handlers[] = {
NULL
};
-static inline struct xattr_handler *
+static inline const struct xattr_handler *
ext2_xattr_handler(int name_index)
{
- struct xattr_handler *handler = NULL;
+ const struct xattr_handler *handler = NULL;
if (name_index > 0 && name_index < ARRAY_SIZE(ext2_xattr_handler_map))
handler = ext2_xattr_handler_map[name_index];
@@ -161,6 +160,10 @@ ext2_xattr_get(struct inode *inode, int name_index, const char *name,
if (name == NULL)
return -EINVAL;
+ name_len = strlen(name);
+ if (name_len > 255)
+ return -ERANGE;
+
down_read(&EXT2_I(inode)->xattr_sem);
error = -ENODATA;
if (!EXT2_I(inode)->i_file_acl)
@@ -181,12 +184,8 @@ bad_block: ext2_error(inode->i_sb, "ext2_xattr_get",
error = -EIO;
goto cleanup;
}
- /* find named attribute */
- name_len = strlen(name);
- error = -ERANGE;
- if (name_len > 255)
- goto cleanup;
+ /* find named attribute */
entry = FIRST_ENTRY(bh);
while (!IS_LAST_ENTRY(entry)) {
struct ext2_xattr_entry *next =
@@ -199,14 +198,6 @@ bad_block: ext2_error(inode->i_sb, "ext2_xattr_get",
goto found;
entry = next;
}
- /* Check the remaining name entries */
- while (!IS_LAST_ENTRY(entry)) {
- struct ext2_xattr_entry *next =
- EXT2_XATTR_NEXT(entry);
- if ((char *)next >= end)
- goto bad_block;
- entry = next;
- }
if (ext2_xattr_cache_insert(bh))
ea_idebug(inode, "cache insert failed");
error = -ENODATA;
@@ -298,7 +289,7 @@ bad_block: ext2_error(inode->i_sb, "ext2_xattr_list",
/* list the attribute names */
for (entry = FIRST_ENTRY(bh); !IS_LAST_ENTRY(entry);
entry = EXT2_XATTR_NEXT(entry)) {
- struct xattr_handler *handler =
+ const struct xattr_handler *handler =
ext2_xattr_handler(entry->e_name_index);
if (handler) {
@@ -345,15 +336,16 @@ static void ext2_xattr_update_super_block(struct super_block *sb)
if (EXT2_HAS_COMPAT_FEATURE(sb, EXT2_FEATURE_COMPAT_EXT_ATTR))
return;
+ spin_lock(&EXT2_SB(sb)->s_lock);
EXT2_SET_COMPAT_FEATURE(sb, EXT2_FEATURE_COMPAT_EXT_ATTR);
- sb->s_dirt = 1;
+ spin_unlock(&EXT2_SB(sb)->s_lock);
mark_buffer_dirty(EXT2_SB(sb)->s_sbh);
}
/*
* ext2_xattr_set()
*
- * Create, replace or remove an extended attribute for this inode. Buffer
+ * Create, replace or remove an extended attribute for this inode. Value
* is NULL to remove an existing extended attribute, and non-NULL to
* either replace an existing extended attribute, or create a new extended
* attribute. The flags XATTR_REPLACE and XATTR_CREATE
@@ -644,8 +636,8 @@ ext2_xattr_set2(struct inode *inode, struct buffer_head *old_bh,
the inode. */
ea_bdebug(new_bh, "reusing block");
- error = -EDQUOT;
- if (vfs_dq_alloc_block(inode, 1)) {
+ error = dquot_alloc_block(inode, 1);
+ if (error) {
unlock_buffer(new_bh);
goto cleanup;
}
@@ -670,9 +662,10 @@ ext2_xattr_set2(struct inode *inode, struct buffer_head *old_bh,
ea_idebug(inode, "creating block %d", block);
new_bh = sb_getblk(sb, block);
- if (!new_bh) {
+ if (unlikely(!new_bh)) {
ext2_free_blocks(inode, block, 1);
- error = -EIO;
+ mark_inode_dirty(inode);
+ error = -ENOMEM;
goto cleanup;
}
lock_buffer(new_bh);
@@ -696,13 +689,15 @@ ext2_xattr_set2(struct inode *inode, struct buffer_head *old_bh,
EXT2_I(inode)->i_file_acl = new_bh ? new_bh->b_blocknr : 0;
inode->i_ctime = CURRENT_TIME_SEC;
if (IS_SYNC(inode)) {
- error = ext2_sync_inode (inode);
+ error = sync_inode_metadata(inode, 1);
/* In case sync failed due to ENOSPC the inode was actually
* written (only some dirty data were not) so we just proceed
* as if nothing happened and cleanup the unused block */
if (error && error != -ENOSPC) {
- if (new_bh && new_bh != old_bh)
- vfs_dq_free_block(inode, 1);
+ if (new_bh && new_bh != old_bh) {
+ dquot_free_block_nodirty(inode, 1);
+ mark_inode_dirty(inode);
+ }
goto cleanup;
}
} else
@@ -725,6 +720,7 @@ ext2_xattr_set2(struct inode *inode, struct buffer_head *old_bh,
mb_cache_entry_free(ce);
ea_bdebug(old_bh, "freeing");
ext2_free_blocks(inode, old_bh->b_blocknr, 1);
+ mark_inode_dirty(inode);
/* We let our caller release old_bh, so we
* need to duplicate the buffer before. */
get_bh(old_bh);
@@ -734,7 +730,8 @@ ext2_xattr_set2(struct inode *inode, struct buffer_head *old_bh,
le32_add_cpu(&HDR(old_bh)->h_refcount, -1);
if (ce)
mb_cache_entry_release(ce);
- vfs_dq_free_block(inode, 1);
+ dquot_free_block_nodirty(inode, 1);
+ mark_inode_dirty(inode);
mark_buffer_dirty(old_bh);
ea_bdebug(old_bh, "refcount now=%d",
le32_to_cpu(HDR(old_bh)->h_refcount));
@@ -797,7 +794,7 @@ ext2_xattr_delete_inode(struct inode *inode)
mark_buffer_dirty(bh);
if (IS_SYNC(inode))
sync_dirty_buffer(bh);
- vfs_dq_free_block(inode, 1);
+ dquot_free_block_nodirty(inode, 1);
}
EXT2_I(inode)->i_file_acl = 0;
@@ -836,7 +833,7 @@ ext2_xattr_cache_insert(struct buffer_head *bh)
ce = mb_cache_entry_alloc(ext2_xattr_cache, GFP_NOFS);
if (!ce)
return -ENOMEM;
- error = mb_cache_entry_insert(ce, bh->b_bdev, bh->b_blocknr, &hash);
+ error = mb_cache_entry_insert(ce, bh->b_bdev, bh->b_blocknr, hash);
if (error) {
mb_cache_entry_free(ce);
if (error == -EBUSY) {
@@ -910,8 +907,8 @@ ext2_xattr_cache_find(struct inode *inode, struct ext2_xattr_header *header)
return NULL; /* never share */
ea_idebug(inode, "looking for cached blocks [%x]", (int)hash);
again:
- ce = mb_cache_entry_find_first(ext2_xattr_cache, 0,
- inode->i_sb->s_bdev, hash);
+ ce = mb_cache_entry_find_first(ext2_xattr_cache, inode->i_sb->s_bdev,
+ hash);
while (ce) {
struct buffer_head *bh;
@@ -943,7 +940,7 @@ again:
unlock_buffer(bh);
brelse(bh);
}
- ce = mb_cache_entry_find_next(ce, 0, inode->i_sb->s_bdev, hash);
+ ce = mb_cache_entry_find_next(ce, inode->i_sb->s_bdev, hash);
}
return NULL;
}
@@ -1019,9 +1016,7 @@ static void ext2_xattr_rehash(struct ext2_xattr_header *header,
int __init
init_ext2_xattr(void)
{
- ext2_xattr_cache = mb_cache_create("ext2_xattr", NULL,
- sizeof(struct mb_cache_entry) +
- sizeof(((struct mb_cache_entry *) 0)->e_indexes[0]), 1, 6);
+ ext2_xattr_cache = mb_cache_create("ext2_xattr", 6);
if (!ext2_xattr_cache)
return -ENOMEM;
return 0;
diff --git a/fs/ext2/xattr.h b/fs/ext2/xattr.h
index bf8175b2ced..60edf298644 100644
--- a/fs/ext2/xattr.h
+++ b/fs/ext2/xattr.h
@@ -55,11 +55,9 @@ struct ext2_xattr_entry {
# ifdef CONFIG_EXT2_FS_XATTR
-extern struct xattr_handler ext2_xattr_user_handler;
-extern struct xattr_handler ext2_xattr_trusted_handler;
-extern struct xattr_handler ext2_xattr_acl_access_handler;
-extern struct xattr_handler ext2_xattr_acl_default_handler;
-extern struct xattr_handler ext2_xattr_security_handler;
+extern const struct xattr_handler ext2_xattr_user_handler;
+extern const struct xattr_handler ext2_xattr_trusted_handler;
+extern const struct xattr_handler ext2_xattr_security_handler;
extern ssize_t ext2_listxattr(struct dentry *, char *, size_t);
@@ -72,7 +70,7 @@ extern void ext2_xattr_put_super(struct super_block *);
extern int init_ext2_xattr(void);
extern void exit_ext2_xattr(void);
-extern struct xattr_handler *ext2_xattr_handlers[];
+extern const struct xattr_handler *ext2_xattr_handlers[];
# else /* CONFIG_EXT2_FS_XATTR */
@@ -116,9 +114,11 @@ exit_ext2_xattr(void)
# endif /* CONFIG_EXT2_FS_XATTR */
#ifdef CONFIG_EXT2_FS_SECURITY
-extern int ext2_init_security(struct inode *inode, struct inode *dir);
+extern int ext2_init_security(struct inode *inode, struct inode *dir,
+ const struct qstr *qstr);
#else
-static inline int ext2_init_security(struct inode *inode, struct inode *dir)
+static inline int ext2_init_security(struct inode *inode, struct inode *dir,
+ const struct qstr *qstr)
{
return 0;
}
diff --git a/fs/ext2/xattr_security.c b/fs/ext2/xattr_security.c
index c8155845ac0..c0ebc4db884 100644
--- a/fs/ext2/xattr_security.c
+++ b/fs/ext2/xattr_security.c
@@ -3,10 +3,7 @@
* Handler for storing security labels as extended attributes.
*/
-#include <linux/module.h>
-#include <linux/string.h>
-#include <linux/fs.h>
-#include <linux/ext2_fs.h>
+#include "ext2.h"
#include <linux/security.h>
#include "xattr.h"
@@ -45,28 +42,31 @@ ext2_xattr_security_set(struct dentry *dentry, const char *name,
value, size, flags);
}
-int
-ext2_init_security(struct inode *inode, struct inode *dir)
+static int ext2_initxattrs(struct inode *inode, const struct xattr *xattr_array,
+ void *fs_info)
{
- int err;
- size_t len;
- void *value;
- char *name;
+ const struct xattr *xattr;
+ int err = 0;
- err = security_inode_init_security(inode, dir, &name, &value, &len);
- if (err) {
- if (err == -EOPNOTSUPP)
- return 0;
- return err;
+ for (xattr = xattr_array; xattr->name != NULL; xattr++) {
+ err = ext2_xattr_set(inode, EXT2_XATTR_INDEX_SECURITY,
+ xattr->name, xattr->value,
+ xattr->value_len, 0);
+ if (err < 0)
+ break;
}
- err = ext2_xattr_set(inode, EXT2_XATTR_INDEX_SECURITY,
- name, value, len, 0);
- kfree(name);
- kfree(value);
return err;
}
-struct xattr_handler ext2_xattr_security_handler = {
+int
+ext2_init_security(struct inode *inode, struct inode *dir,
+ const struct qstr *qstr)
+{
+ return security_inode_init_security(inode, dir, qstr,
+ &ext2_initxattrs, NULL);
+}
+
+const struct xattr_handler ext2_xattr_security_handler = {
.prefix = XATTR_SECURITY_PREFIX,
.list = ext2_xattr_security_list,
.get = ext2_xattr_security_get,
diff --git a/fs/ext2/xattr_trusted.c b/fs/ext2/xattr_trusted.c
index 2a26d71f477..7e192574c00 100644
--- a/fs/ext2/xattr_trusted.c
+++ b/fs/ext2/xattr_trusted.c
@@ -5,11 +5,7 @@
* Copyright (C) 2003 by Andreas Gruenbacher, <a.gruenbacher@computer.org>
*/
-#include <linux/module.h>
-#include <linux/string.h>
-#include <linux/capability.h>
-#include <linux/fs.h>
-#include <linux/ext2_fs.h>
+#include "ext2.h"
#include "xattr.h"
static size_t
@@ -50,7 +46,7 @@ ext2_xattr_trusted_set(struct dentry *dentry, const char *name,
value, size, flags);
}
-struct xattr_handler ext2_xattr_trusted_handler = {
+const struct xattr_handler ext2_xattr_trusted_handler = {
.prefix = XATTR_TRUSTED_PREFIX,
.list = ext2_xattr_trusted_list,
.get = ext2_xattr_trusted_get,
diff --git a/fs/ext2/xattr_user.c b/fs/ext2/xattr_user.c
index 3f6caf3684b..f470e44c4b8 100644
--- a/fs/ext2/xattr_user.c
+++ b/fs/ext2/xattr_user.c
@@ -6,7 +6,6 @@
*/
#include <linux/init.h>
-#include <linux/module.h>
#include <linux/string.h>
#include "ext2.h"
#include "xattr.h"
@@ -54,7 +53,7 @@ ext2_xattr_user_set(struct dentry *dentry, const char *name,
name, value, size, flags);
}
-struct xattr_handler ext2_xattr_user_handler = {
+const struct xattr_handler ext2_xattr_user_handler = {
.prefix = XATTR_USER_PREFIX,
.list = ext2_xattr_user_list,
.get = ext2_xattr_user_get,
diff --git a/fs/ext2/xip.c b/fs/ext2/xip.c
index 322a56b2dfb..e98171a11cf 100644
--- a/fs/ext2/xip.c
+++ b/fs/ext2/xip.c
@@ -9,8 +9,6 @@
#include <linux/fs.h>
#include <linux/genhd.h>
#include <linux/buffer_head.h>
-#include <linux/ext2_fs_sb.h>
-#include <linux/ext2_fs.h>
#include <linux/blkdev.h>
#include "ext2.h"
#include "xip.h"
@@ -37,6 +35,7 @@ __ext2_get_block(struct inode *inode, pgoff_t pgoff, int create,
int rc;
memset(&tmp, 0, sizeof(struct buffer_head));
+ tmp.b_size = 1 << inode->i_blkbits;
rc = ext2_get_block(inode, pgoff, &tmp, create);
*result = tmp.b_blocknr;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 10:56:11 +0000