*
* +------------------+
* | header |
- * ¦ entry 1 | |
+ * | entry 1 | |
* | entry 2 | | growing downwards
* | entry 3 | v
* | four null bytes |
static struct mb_cache *ext2_xattr_cache;
-static struct xattr_handler *ext2_xattr_handler_map[EXT2_XATTR_INDEX_MAX] = {
+static 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,
{
struct xattr_handler *handler = NULL;
- if (name_index > 0 && name_index <= EXT2_XATTR_INDEX_MAX)
+ if (name_index > 0 && name_index < ARRAY_SIZE(ext2_xattr_handler_map))
handler = ext2_xattr_handler_map[name_index];
return handler;
}
-/*
- * Inode operation listxattr()
- *
- * dentry->d_inode->i_sem: don't care
- */
-ssize_t
-ext2_listxattr(struct dentry *dentry, char *buffer, size_t size)
-{
- return ext2_xattr_list(dentry->d_inode, buffer, size);
-}
-
/*
* ext2_xattr_get()
*
* Returns a negative error number on failure, or the number of bytes
* used / required on success.
*/
-int
+static int
ext2_xattr_list(struct inode *inode, char *buffer, size_t buffer_size)
{
struct buffer_head *bh = NULL;
return error;
}
+/*
+ * Inode operation listxattr()
+ *
+ * dentry->d_inode->i_mutex: don't care
+ */
+ssize_t
+ext2_listxattr(struct dentry *dentry, char *buffer, size_t size)
+{
+ return ext2_xattr_list(dentry->d_inode, buffer, size);
+}
+
/*
* If the EXT2_FEATURE_COMPAT_EXT_ATTR feature of this file system is
* not set, set it.
if (EXT2_HAS_COMPAT_FEATURE(sb, EXT2_FEATURE_COMPAT_EXT_ATTR))
return;
- lock_super(sb);
- EXT2_SB(sb)->s_es->s_feature_compat |=
- cpu_to_le32(EXT2_FEATURE_COMPAT_EXT_ATTR);
+ EXT2_SET_COMPAT_FEATURE(sb, EXT2_FEATURE_COMPAT_EXT_ATTR);
sb->s_dirt = 1;
mark_buffer_dirty(EXT2_SB(sb)->s_sbh);
- unlock_super(sb);
}
/*
ea_idebug(inode, "name=%d.%s, value=%p, value_len=%ld",
name_index, name, value, (long)value_len);
- if (IS_RDONLY(inode))
- return -EROFS;
- if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
- return -EPERM;
if (value == NULL)
value_len = 0;
if (name == NULL)
if (header) {
struct mb_cache_entry *ce;
+
/* assert(header == HDR(bh)); */
ce = mb_cache_entry_get(ext2_xattr_cache, bh->b_bdev,
bh->b_blocknr);
}
} else {
/* Allocate a buffer where we construct the new block. */
- header = kmalloc(sb->s_blocksize, GFP_KERNEL);
+ header = kzalloc(sb->s_blocksize, GFP_KERNEL);
error = -ENOMEM;
if (header == NULL)
goto cleanup;
- memset(header, 0, sb->s_blocksize);
end = (char *)header + sb->s_blocksize;
header->h_magic = cpu_to_le32(EXT2_XATTR_MAGIC);
header->h_blocks = header->h_refcount = cpu_to_le32(1);
ea_bdebug(new_bh, "reusing block");
error = -ENOSPC;
- if (DLIMIT_ALLOC_BLOCK(sb, inode->i_xid, 1))
+ if (DLIMIT_ALLOC_BLOCK(inode, 1))
goto cleanup;
error = -EDQUOT;
if (DQUOT_ALLOC_BLOCK(inode, 1)) {
- DLIMIT_FREE_BLOCK(sb, inode->i_xid, 1);
+ DLIMIT_FREE_BLOCK(inode, 1);
unlock_buffer(new_bh);
goto cleanup;
}
/* Update the inode. */
EXT2_I(inode)->i_file_acl = new_bh ? new_bh->b_blocknr : 0;
- inode->i_ctime = CURRENT_TIME;
+ inode->i_ctime = CURRENT_TIME_SEC;
if (IS_SYNC(inode)) {
error = ext2_sync_inode (inode);
- if (error)
+ /* 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)
+ DQUOT_FREE_BLOCK(inode, 1);
goto cleanup;
+ }
} else
mark_inode_dirty(inode);
error = 0;
if (old_bh && old_bh != new_bh) {
struct mb_cache_entry *ce;
+
/*
* If there was an old block and we are no longer using it,
* release the old block.
bforget(old_bh);
} else {
/* Decrement the refcount only. */
- if (ce)
- mb_cache_entry_release(ce);
HDR(old_bh)->h_refcount = cpu_to_le32(
le32_to_cpu(HDR(old_bh)->h_refcount) - 1);
- DLIMIT_FREE_BLOCK(sb, inode->i_xid, 1);
+ if (ce)
+ mb_cache_entry_release(ce);
+ DLIMIT_FREE_BLOCK(inode, 1);
DQUOT_FREE_BLOCK(inode, 1);
mark_buffer_dirty(old_bh);
ea_bdebug(old_bh, "refcount now=%d",
EXT2_I(inode)->i_file_acl);
goto cleanup;
}
- ce = mb_cache_entry_get(ext2_xattr_cache, bh->b_bdev,
- bh->b_blocknr);
+ ce = mb_cache_entry_get(ext2_xattr_cache, bh->b_bdev, bh->b_blocknr);
lock_buffer(bh);
if (HDR(bh)->h_refcount == cpu_to_le32(1)) {
if (ce)
ext2_free_blocks(inode, EXT2_I(inode)->i_file_acl, 1);
get_bh(bh);
bforget(bh);
+ unlock_buffer(bh);
} else {
- if (ce)
- mb_cache_entry_release(ce);
HDR(bh)->h_refcount = cpu_to_le32(
le32_to_cpu(HDR(bh)->h_refcount) - 1);
+ if (ce)
+ mb_cache_entry_release(ce);
+ ea_bdebug(bh, "refcount now=%d",
+ le32_to_cpu(HDR(bh)->h_refcount));
+ unlock_buffer(bh);
mark_buffer_dirty(bh);
if (IS_SYNC(inode))
sync_dirty_buffer(bh);
- DLIMIT_FREE_BLOCK(inode->i_sb, inode->i_xid, 1);
+ DLIMIT_FREE_BLOCK(inode, 1);
DQUOT_FREE_BLOCK(inode, 1);
}
- ea_bdebug(bh, "refcount now=%d", le32_to_cpu(HDR(bh)->h_refcount) - 1);
- unlock_buffer(bh);
EXT2_I(inode)->i_file_acl = 0;
cleanup:
void
ext2_xattr_put_super(struct super_block *sb)
{
- mb_cache_shrink(ext2_xattr_cache, sb->s_bdev);
+ mb_cache_shrink(sb->s_bdev);
}
if (IS_LAST_ENTRY(entry2))
return 1;
if (entry1->e_hash != entry2->e_hash ||
+ entry1->e_name_index != entry2->e_name_index ||
entry1->e_name_len != entry2->e_name_len ||
entry1->e_value_size != entry2->e_value_size ||
memcmp(entry1->e_name, entry2->e_name, entry1->e_name_len))
}
bh = sb_bread(inode->i_sb, ce->e_block);
-
if (!bh) {
ext2_error(inode->i_sb, "ext2_xattr_cache_find",
"inode %ld: block %ld read error",
{
ext2_xattr_cache = mb_cache_create("ext2_xattr", NULL,
sizeof(struct mb_cache_entry) +
- sizeof(struct mb_cache_entry_index), 1, 6);
+ sizeof(((struct mb_cache_entry *) 0)->e_indexes[0]), 1, 6);
if (!ext2_xattr_cache)
return -ENOMEM;
return 0;
git://git.onelab.eu / linux-2.6.git / blobdiff