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btrfs-progs: Use fs_info instead of root for BTRFS_MAX_XATTR_SIZE

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Do a cleanup. Also make it consistent with kernel.  Use fs_info instead
of root for BTRFS_MAX_XATTR_SIZE, since maybe in some situation we do
not know root, but just know fs_info.

To be consistent with kernel, change macro to inline function.

Signed-off-by: Gu Jinxiang <gujx@cn.fujitsu.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Gu Jinxiang 2018-01-26 15:26:03 +08:00 committed by David Sterba
parent c958110785
commit 8bcac688be
2 changed files with 7 additions and 5 deletions
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9
ctree.h
View File

@ -359,10 +359,6 @@ struct btrfs_header {
#define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header))
#define BTRFS_LEAF_DATA_SIZE(fs_info) \
(__BTRFS_LEAF_DATA_SIZE(fs_info->nodesize))
#define BTRFS_MAX_XATTR_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r->fs_info) - \
sizeof(struct btrfs_item) -\
sizeof(struct btrfs_dir_item))
/*
* this is a very generous portion of the super block, giving us
@ -1203,6 +1199,11 @@ static inline u32 BTRFS_MAX_INLINE_DATA_SIZE(const struct btrfs_fs_info *info)
BTRFS_FILE_EXTENT_INLINE_DATA_START;
}
static inline u32 BTRFS_MAX_XATTR_SIZE(const struct btrfs_fs_info *info)
{
return BTRFS_MAX_ITEM_SIZE(info) - sizeof(struct btrfs_dir_item);
}
/*
* inode items have the data typically returned from stat and store other
* info about object characteristics. There is one for every file and dir in

3
dir-item.c
View File

@ -311,7 +311,8 @@ static int verify_dir_item(struct btrfs_root *root,
/* BTRFS_MAX_XATTR_SIZE is the same for all dir items */
if ((btrfs_dir_data_len(leaf, dir_item) +
btrfs_dir_name_len(leaf, dir_item)) > BTRFS_MAX_XATTR_SIZE(root)) {
btrfs_dir_name_len(leaf, dir_item)) >
BTRFS_MAX_XATTR_SIZE(root->fs_info)) {
fprintf(stderr, "invalid dir item name + data len: %u + %u\n",
(unsigned)btrfs_dir_name_len(leaf, dir_item),
(unsigned)btrfs_dir_data_len(leaf, dir_item));