For passing authentication keys to the checksumming functions we need a container for the key.
Pass in a btrfs_fs_info to btrfs_csum_data() so we can use the fs_info as a container for the authentication key. Note this is not always possible for all callers of btrfs_csum_data() so we're just passing in NULL if it is not directly possible. Functions calling btrfs_csum_data() with a NULL fs_info argument are currently not supported in the context of an authenticated file-system. Signed-off-by: Johannes Thumshirn <[email protected]> --- btrfs-sb-mod.c | 4 ++-- check/main.c | 2 +- cmds/inspect-dump-super.c | 2 +- cmds/rescue-chunk-recover.c | 2 +- convert/common.c | 2 +- disk-io.c | 16 +++++++++------- disk-io.h | 3 ++- file-item.c | 2 +- 8 files changed, 18 insertions(+), 15 deletions(-) diff --git a/btrfs-sb-mod.c b/btrfs-sb-mod.c index ad143ca05aa6..537002687da6 100644 --- a/btrfs-sb-mod.c +++ b/btrfs-sb-mod.c @@ -36,7 +36,7 @@ static int check_csum_superblock(void *sb) u8 result[BTRFS_CSUM_SIZE]; u16 csum_type = btrfs_super_csum_type(sb); - btrfs_csum_data(csum_type, (unsigned char *)sb + BTRFS_CSUM_SIZE, + btrfs_csum_data(NULL, csum_type, (unsigned char *)sb + BTRFS_CSUM_SIZE, result, BTRFS_SUPER_INFO_SIZE - BTRFS_CSUM_SIZE); return !memcmp(sb, result, csum_size); @@ -48,7 +48,7 @@ static void update_block_csum(void *block) struct btrfs_header *hdr; u16 csum_type = btrfs_super_csum_type(block); - btrfs_csum_data(csum_type, (unsigned char *)block + BTRFS_CSUM_SIZE, + btrfs_csum_data(NULL, csum_type, (unsigned char *)block + BTRFS_CSUM_SIZE, result, BTRFS_SUPER_INFO_SIZE - BTRFS_CSUM_SIZE); memset(block, 0, BTRFS_CSUM_SIZE); diff --git a/check/main.c b/check/main.c index fd05430c1f51..d009f33e9657 100644 --- a/check/main.c +++ b/check/main.c @@ -5659,7 +5659,7 @@ static int check_extent_csums(struct btrfs_root *root, u64 bytenr, while (data_checked < read_len) { tmp = offset + data_checked; - btrfs_csum_data(csum_type, data + tmp, + btrfs_csum_data(fs_info, csum_type, data + tmp, result, fs_info->sectorsize); csum_offset = leaf_offset + diff --git a/cmds/inspect-dump-super.c b/cmds/inspect-dump-super.c index fc06488dde32..1a2ef4d4822c 100644 --- a/cmds/inspect-dump-super.c +++ b/cmds/inspect-dump-super.c @@ -39,7 +39,7 @@ static int check_csum_sblock(void *sb, int csum_size, u16 csum_type) { u8 result[BTRFS_CSUM_SIZE]; - btrfs_csum_data(csum_type, (u8 *)sb + BTRFS_CSUM_SIZE, + btrfs_csum_data(NULL, csum_type, (u8 *)sb + BTRFS_CSUM_SIZE, result, BTRFS_SUPER_INFO_SIZE - BTRFS_CSUM_SIZE); return !memcmp(sb, result, csum_size); diff --git a/cmds/rescue-chunk-recover.c b/cmds/rescue-chunk-recover.c index bf35693ddbfa..0896cea674ab 100644 --- a/cmds/rescue-chunk-recover.c +++ b/cmds/rescue-chunk-recover.c @@ -1908,7 +1908,7 @@ static int check_one_csum(int fd, u64 start, u32 len, u32 tree_csum, } ret = 0; put_unaligned_le32(tree_csum, expected_csum); - btrfs_csum_data(csum_type, (u8 *)data, result, len); + btrfs_csum_data(NULL, csum_type, (u8 *)data, result, len); if (memcmp(result, expected_csum, csum_size) != 0) ret = 1; out: diff --git a/convert/common.c b/convert/common.c index 3cb2d9d44881..54ed52b592e6 100644 --- a/convert/common.c +++ b/convert/common.c @@ -66,7 +66,7 @@ static inline int write_temp_super(int fd, struct btrfs_super_block *sb, u16 csum_type = btrfs_super_csum_type(sb); int ret; - btrfs_csum_data(csum_type, (u8 *)sb + BTRFS_CSUM_SIZE, + btrfs_csum_data(NULL, csum_type, (u8 *)sb + BTRFS_CSUM_SIZE, result, BTRFS_SUPER_INFO_SIZE - BTRFS_CSUM_SIZE); memcpy(&sb->csum[0], result, BTRFS_CSUM_SIZE); ret = pwrite(fd, sb, BTRFS_SUPER_INFO_SIZE, sb_bytenr); diff --git a/disk-io.c b/disk-io.c index a9744af90a43..e68f28e72077 100644 --- a/disk-io.c +++ b/disk-io.c @@ -139,7 +139,8 @@ static void print_tree_block_error(struct btrfs_fs_info *fs_info, } } -int btrfs_csum_data(u16 csum_type, const u8 *data, u8 *out, size_t len) +int btrfs_csum_data(struct btrfs_fs_info *fs_info, u16 csum_type, + const u8 *data, u8 *out, size_t len) { memset(out, 0, BTRFS_CSUM_SIZE); @@ -167,7 +168,8 @@ static int __csum_tree_block_size(struct extent_buffer *buf, u16 csum_size, u32 len; len = buf->len - BTRFS_CSUM_SIZE; - btrfs_csum_data(csum_type, (u8 *)buf->data + BTRFS_CSUM_SIZE, + btrfs_csum_data(buf->fs_info, csum_type, + (u8 *)buf->data + BTRFS_CSUM_SIZE, result, len); if (verify) { @@ -1386,7 +1388,7 @@ int btrfs_check_super(struct btrfs_super_block *sb, unsigned sbflags) } csum_size = btrfs_super_csum_size(sb); - btrfs_csum_data(csum_type, (u8 *)sb + BTRFS_CSUM_SIZE, + btrfs_csum_data(NULL, csum_type, (u8 *)sb + BTRFS_CSUM_SIZE, result, BTRFS_SUPER_INFO_SIZE - BTRFS_CSUM_SIZE); if (memcmp(result, sb->csum, csum_size)) { @@ -1640,8 +1642,8 @@ 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); - btrfs_csum_data(csum_type, (u8 *)sb + BTRFS_CSUM_SIZE, result, - BTRFS_SUPER_INFO_SIZE - BTRFS_CSUM_SIZE); + btrfs_csum_data(fs_info, csum_type, (u8 *)sb + BTRFS_CSUM_SIZE, + result, BTRFS_SUPER_INFO_SIZE - BTRFS_CSUM_SIZE); memcpy(&sb->csum[0], result, BTRFS_CSUM_SIZE); /* @@ -1675,8 +1677,8 @@ static int write_dev_supers(struct btrfs_fs_info *fs_info, btrfs_set_super_bytenr(sb, bytenr); - btrfs_csum_data(csum_type, (u8 *)sb + BTRFS_CSUM_SIZE, result, - BTRFS_SUPER_INFO_SIZE - BTRFS_CSUM_SIZE); + btrfs_csum_data(fs_info, csum_type, (u8 *)sb + BTRFS_CSUM_SIZE, + result, BTRFS_SUPER_INFO_SIZE - BTRFS_CSUM_SIZE); memcpy(&sb->csum[0], result, BTRFS_CSUM_SIZE); /* diff --git a/disk-io.h b/disk-io.h index 545cacda9a79..bb093ae69d57 100644 --- a/disk-io.h +++ b/disk-io.h @@ -186,7 +186,8 @@ 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); -int btrfs_csum_data(u16 csum_type, const u8 *data, u8 *out, size_t len); +int btrfs_csum_data(struct btrfs_fs_info *fs_info, u16 csum_type, + const u8 *data, u8 *out, size_t len); int btrfs_open_device(struct btrfs_device *dev); int csum_tree_block_size(struct extent_buffer *buf, u16 csum_sectorsize, diff --git a/file-item.c b/file-item.c index 64af57693baf..fb84fbd6d54f 100644 --- a/file-item.c +++ b/file-item.c @@ -315,7 +315,7 @@ csum: item = (struct btrfs_csum_item *)((unsigned char *)item + csum_offset * csum_size); found: - btrfs_csum_data(csum_type, (u8 *)data, csum_result, len); + btrfs_csum_data(root->fs_info, csum_type, (u8 *)data, csum_result, len); /* FIXME: does not make sense for non-crc32c */ if (csum_result == 0) { printk("csum result is 0 for block %llu\n", -- 2.16.4
