For inline compressed file extent, kernel doesn't allow inline extent ram size larger than sector size and on-disk inline extent size should not exceed BTRFS_MAX_INLINE_DATA_SIZE().
For inline uncompressed file extent, kernel doesn't allow inline extent ram and on-disk size larger than either BTRFS_MAX_INLINE_DATA_SIZE() or sector size. Check it in original mode. Signed-off-by: Qu Wenruo <w...@suse.com> --- check/main.c | 16 ++++++++++++++++ check/mode-original.h | 1 + 2 files changed, 17 insertions(+) diff --git a/check/main.c b/check/main.c index 97baae583f04..7821faa929a3 100644 --- a/check/main.c +++ b/check/main.c @@ -560,6 +560,8 @@ static void print_inode_error(struct btrfs_root *root, struct inode_record *rec) fprintf(stderr, ", bad file extent"); if (errors & I_ERR_FILE_EXTENT_OVERLAP) fprintf(stderr, ", file extent overlap"); + if (errors & I_ERR_FILE_EXTENT_TOO_LARGE) + fprintf(stderr, ", inline file extent too large"); if (errors & I_ERR_FILE_EXTENT_DISCOUNT) fprintf(stderr, ", file extent discount"); if (errors & I_ERR_DIR_ISIZE_WRONG) @@ -1433,6 +1435,8 @@ static int process_file_extent(struct btrfs_root *root, u64 disk_bytenr = 0; u64 extent_offset = 0; u64 mask = root->fs_info->sectorsize - 1; + u32 max_inline_size = min_t(u32, mask, + BTRFS_MAX_INLINE_DATA_SIZE(root->fs_info)); int extent_type; int ret; @@ -1458,9 +1462,21 @@ static int process_file_extent(struct btrfs_root *root, extent_type = btrfs_file_extent_type(eb, fi); if (extent_type == BTRFS_FILE_EXTENT_INLINE) { + u8 compression = btrfs_file_extent_compression(eb, fi); + struct btrfs_item *item = btrfs_item_nr(slot); + num_bytes = btrfs_file_extent_inline_len(eb, slot, fi); if (num_bytes == 0) rec->errors |= I_ERR_BAD_FILE_EXTENT; + if (compression) { + if (btrfs_file_extent_inline_item_len(eb, item) > + max_inline_size || + num_bytes > root->fs_info->sectorsize) + rec->errors |= I_ERR_FILE_EXTENT_TOO_LARGE; + } else { + if (num_bytes > max_inline_size) + rec->errors |= I_ERR_FILE_EXTENT_TOO_LARGE; + } rec->found_size += num_bytes; num_bytes = (num_bytes + mask) & ~mask; } else if (extent_type == BTRFS_FILE_EXTENT_REG || diff --git a/check/mode-original.h b/check/mode-original.h index f859af478f0f..368de692fdd1 100644 --- a/check/mode-original.h +++ b/check/mode-original.h @@ -185,6 +185,7 @@ struct file_extent_hole { #define I_ERR_SOME_CSUM_MISSING (1 << 12) #define I_ERR_LINK_COUNT_WRONG (1 << 13) #define I_ERR_FILE_EXTENT_ORPHAN (1 << 14) +#define I_ERR_FILE_EXTENT_TOO_LARGE (1 << 15) struct inode_record { struct list_head backrefs; -- 2.16.2 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html