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btrfs-progs: don't assume checksums are always 4 bytes

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Pass pointer to a generic buffer instead of fixed size that crc32c
currently uses.

Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Johannes Thumshirn 2019-09-03 17:00:38 +02:00 committed by David Sterba
parent a38eb3d426
commit de68086e35
8 changed files with 20 additions and 15 deletions
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9
btrfs-sb-mod.c
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@ -37,7 +37,8 @@ static int check_csum_superblock(void *sb)
u32 crc = ~(u32)0;
crc = btrfs_csum_data((char *)sb + BTRFS_CSUM_SIZE,
crc, BTRFS_SUPER_INFO_SIZE - BTRFS_CSUM_SIZE);
(u8 *)&crc,
BTRFS_SUPER_INFO_SIZE - BTRFS_CSUM_SIZE);
btrfs_csum_final(crc, result);
return !memcmp(sb, &result, csum_size);
@ -50,10 +51,12 @@ static void update_block_csum(void *block, int is_sb)
u32 crc = ~(u32)0;
if (is_sb) {
crc = btrfs_csum_data((char *)block + BTRFS_CSUM_SIZE, crc,
crc = btrfs_csum_data((char *)block + BTRFS_CSUM_SIZE,
(u8 *)&crc,
BTRFS_SUPER_INFO_SIZE - BTRFS_CSUM_SIZE);
} else {
crc = btrfs_csum_data((char *)block + BTRFS_CSUM_SIZE, crc,
crc = btrfs_csum_data((char *)block + BTRFS_CSUM_SIZE,
(u8 *)&crc,
BLOCKSIZE - BTRFS_CSUM_SIZE);
}
btrfs_csum_final(crc, result);

2
check/main.c
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@ -5660,7 +5660,7 @@ static int check_extent_csums(struct btrfs_root *root, u64 bytenr,
tmp = offset + data_checked;
csum = btrfs_csum_data((char *)data + tmp,
csum, fs_info->sectorsize);
(u8 *)&csum, fs_info->sectorsize);
btrfs_csum_final(csum, (u8 *)&csum);
csum_offset = leaf_offset +

3
cmds/inspect-dump-super.c
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@ -41,7 +41,8 @@ static int check_csum_sblock(void *sb, int csum_size)
u32 crc = ~(u32)0;
crc = btrfs_csum_data((char *)sb + BTRFS_CSUM_SIZE,
crc, BTRFS_SUPER_INFO_SIZE - BTRFS_CSUM_SIZE);
(u8 *)&crc,
BTRFS_SUPER_INFO_SIZE - BTRFS_CSUM_SIZE);
btrfs_csum_final(crc, result);
return !memcmp(sb, &result, csum_size);

2
cmds/rescue-chunk-recover.c
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@ -1902,7 +1902,7 @@ static int check_one_csum(int fd, u64 start, u32 len, u32 tree_csum)
goto out;
}
ret = 0;
csum_result = btrfs_csum_data(data, csum_result, len);
csum_result = btrfs_csum_data(data, (u8 *)&csum_result, len);
btrfs_csum_final(csum_result, (u8 *)&csum_result);
if (csum_result != tree_csum)
ret = 1;

3
convert/common.c
View File

@ -65,7 +65,8 @@ static inline int write_temp_super(int fd, struct btrfs_super_block *sb,
u32 crc = ~(u32)0;
int ret;
crc = btrfs_csum_data((char *)sb + BTRFS_CSUM_SIZE, crc,
crc = btrfs_csum_data((char *)sb + BTRFS_CSUM_SIZE,
(u8 *)&crc,
BTRFS_SUPER_INFO_SIZE - BTRFS_CSUM_SIZE);
btrfs_csum_final(crc, &sb->csum[0]);
ret = pwrite(fd, sb, BTRFS_SUPER_INFO_SIZE, sb_bytenr);

12
disk-io.c
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@ -138,9 +138,9 @@ static void print_tree_block_error(struct btrfs_fs_info *fs_info,
}
}
u32 btrfs_csum_data(char *data, u32 seed, size_t len)
u32 btrfs_csum_data(char *data, u8 *seed, size_t len)
{
return crc32c(seed, data, len);
return crc32c(*(u32*)seed, data, len);
}
void btrfs_csum_final(u32 crc, u8 *result)
@ -156,7 +156,7 @@ static int __csum_tree_block_size(struct extent_buffer *buf, u16 csum_size,
u32 crc = ~(u32)0;
len = buf->len - BTRFS_CSUM_SIZE;
crc = btrfs_csum_data(buf->data + BTRFS_CSUM_SIZE, crc, len);
crc = btrfs_csum_data(buf->data + BTRFS_CSUM_SIZE, (u8 *)&crc, len);
btrfs_csum_final(crc, result);
if (verify) {
@ -1376,7 +1376,7 @@ int btrfs_check_super(struct btrfs_super_block *sb, unsigned sbflags)
csum_size = btrfs_csum_sizes[csum_type];
crc = ~(u32)0;
crc = btrfs_csum_data((char *)sb + BTRFS_CSUM_SIZE, crc,
crc = btrfs_csum_data((char *)sb + BTRFS_CSUM_SIZE, (u8 *)&crc,
BTRFS_SUPER_INFO_SIZE - BTRFS_CSUM_SIZE);
btrfs_csum_final(crc, result);
@ -1631,7 +1631,7 @@ static int write_dev_supers(struct btrfs_fs_info *fs_info,
if (fs_info->super_bytenr != BTRFS_SUPER_INFO_OFFSET) {
btrfs_set_super_bytenr(sb, fs_info->super_bytenr);
crc = ~(u32)0;
crc = btrfs_csum_data((char *)sb + BTRFS_CSUM_SIZE, crc,
crc = btrfs_csum_data((char *)sb + BTRFS_CSUM_SIZE, (u8 *)&crc,
BTRFS_SUPER_INFO_SIZE - BTRFS_CSUM_SIZE);
btrfs_csum_final(crc, &sb->csum[0]);
@ -1667,7 +1667,7 @@ static int write_dev_supers(struct btrfs_fs_info *fs_info,
btrfs_set_super_bytenr(sb, bytenr);
crc = ~(u32)0;
crc = btrfs_csum_data((char *)sb + BTRFS_CSUM_SIZE, crc,
crc = btrfs_csum_data((char *)sb + BTRFS_CSUM_SIZE, (u8 *)&crc,
BTRFS_SUPER_INFO_SIZE - BTRFS_CSUM_SIZE);
btrfs_csum_final(crc, &sb->csum[0]);

2
disk-io.h
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@ -186,7 +186,7 @@ int btrfs_free_fs_root(struct btrfs_root *root);
void btrfs_mark_buffer_dirty(struct extent_buffer *buf);
int btrfs_buffer_uptodate(struct extent_buffer *buf, u64 parent_transid);
int btrfs_set_buffer_uptodate(struct extent_buffer *buf);
u32 btrfs_csum_data(char *data, u32 seed, size_t len);
u32 btrfs_csum_data(char *data, u8 *seed, size_t len);
void btrfs_csum_final(u32 crc, u8 *result);
int btrfs_open_device(struct btrfs_device *dev);

2
file-item.c
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@ -312,7 +312,7 @@ csum:
item = (struct btrfs_csum_item *)((unsigned char *)item +
csum_offset * csum_size);
found:
csum_result = btrfs_csum_data(data, csum_result, len);
csum_result = btrfs_csum_data(data, (u8 *)&csum_result, len);
btrfs_csum_final(csum_result, (u8 *)&csum_result);
if (csum_result == 0) {
printk("csum result is 0 for block %llu\n",