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authorDarrick J. Wong <djwong@us.ibm.com>2012-04-29 18:35:10 -0400
committerTheodore Ts'o <tytso@mit.edu>2012-04-29 18:35:10 -0400
commitfa77dcfafeaa6bc73293c646bfc3d5192dcf0be2 (patch)
tree66c4232c2e5c1f59666e05164b77539a9b1dd290 /fs/ext4/ext4.h
parent41a246d1ff75a95d2be3191ca6e6db139dc0f430 (diff)
ext4: calculate and verify block bitmap checksum
Compute and verify the checksum of the block bitmap; this checksum is stored in the block group descriptor. Signed-off-by: Darrick J. Wong <djwong@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/ext4.h')
-rw-r--r--fs/ext4/ext4.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 7f0ff88f32b..7a4f1607525 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1857,8 +1857,18 @@ void ext4_inode_bitmap_csum_set(struct super_block *sb, ext4_group_t group,
int ext4_inode_bitmap_csum_verify(struct super_block *sb, ext4_group_t group,
struct ext4_group_desc *gdp,
struct buffer_head *bh, int sz);
+void ext4_block_bitmap_csum_set(struct super_block *sb, ext4_group_t group,
+ struct ext4_group_desc *gdp,
+ struct buffer_head *bh, int sz);
+int ext4_block_bitmap_csum_verify(struct super_block *sb, ext4_group_t group,
+ struct ext4_group_desc *gdp,
+ struct buffer_head *bh, int sz);
/* balloc.c */
+extern void ext4_validate_block_bitmap(struct super_block *sb,
+ struct ext4_group_desc *desc,
+ unsigned int block_group,
+ struct buffer_head *bh);
extern unsigned int ext4_block_group(struct super_block *sb,
ext4_fsblk_t blocknr);
extern ext4_grpblk_t ext4_block_group_offset(struct super_block *sb,