lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Btrfs: corruption hunt continues

Browse Source 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2007-03-30 14:27:56 -04:00
committed by David Woodhouse
parent 22b0ebda6c
commit d602557953
11 changed files with 187 additions and 105 deletions
Download Patch File Download Diff File Expand all files Collapse all files

32
fs/btrfs/ctree.h
View File

@ -2,6 +2,7 @@
#define __BTRFS__
#include <linux/fs.h>
#include <linux/buffer_head.h>
#include "bit-radix.h"
struct btrfs_trans_handle;
@ -834,6 +835,37 @@ static inline struct btrfs_root *btrfs_sb(struct super_block *sb)
return sb->s_fs_info;
}
static inline void btrfs_check_bounds(void *vptr, size_t len,
void *vcontainer, size_t container_len)
{
char *ptr = vptr;
char *container = vcontainer;
WARN_ON(ptr < container);
WARN_ON(ptr + len > container + container_len);
}
static inline void btrfs_memcpy(struct btrfs_root *root,
void *dst_block,
void *dst, const void *src, size_t nr)
{
btrfs_check_bounds(dst, nr, dst_block, root->fs_info->sb->s_blocksize);
memcpy(dst, src, nr);
}
static inline void btrfs_memmove(struct btrfs_root *root,
void *dst_block,
void *dst, void *src, size_t nr)
{
btrfs_check_bounds(dst, nr, dst_block, root->fs_info->sb->s_blocksize);
memmove(dst, src, nr);
}
static inline void btrfs_mark_buffer_dirty(struct buffer_head *bh)
{
WARN_ON(!atomic_read(&bh->b_count));
mark_buffer_dirty(bh);
}
/* helper function to cast into the data area of the leaf. */
#define btrfs_item_ptr(leaf, slot, type) \
((type *)(btrfs_leaf_data(leaf) + \