From: Qu Wenruo wqu@suse.com
commit 82fc28fbedbb59642f05215db3b0ef4eb91aa31d upstream.
By function, chunk item verification is more suitable to be done inside tree-checker.
So move btrfs_check_chunk_valid() to tree-checker.c and export it.
And since it's now moved to tree-checker, also add a better comment for what this function is doing.
Reviewed-by: Johannes Thumshirn jthumshirn@suse.de Signed-off-by: Qu Wenruo wqu@suse.com Reviewed-by: David Sterba dsterba@suse.com Signed-off-by: David Sterba dsterba@suse.com [bwh: Cherry-picked for 4.19 to ease backporting later fixes] Signed-off-by: Ben Hutchings ben.hutchings@codethink.co.uk Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- fs/btrfs/tree-checker.c | 97 ++++++++++++++++++++++++++++++++++++++++++++++++ fs/btrfs/tree-checker.h | 4 + fs/btrfs/volumes.c | 94 ---------------------------------------------- 3 files changed, 102 insertions(+), 93 deletions(-)
--- a/fs/btrfs/tree-checker.c +++ b/fs/btrfs/tree-checker.c @@ -449,6 +449,103 @@ static int check_block_group_item(struct }
/* + * The common chunk check which could also work on super block sys chunk array. + * + * Return -EIO if anything is corrupted. + * Return 0 if everything is OK. + */ +int btrfs_check_chunk_valid(struct btrfs_fs_info *fs_info, + struct extent_buffer *leaf, + struct btrfs_chunk *chunk, u64 logical) +{ + u64 length; + u64 stripe_len; + u16 num_stripes; + u16 sub_stripes; + u64 type; + u64 features; + bool mixed = false; + + length = btrfs_chunk_length(leaf, chunk); + stripe_len = btrfs_chunk_stripe_len(leaf, chunk); + num_stripes = btrfs_chunk_num_stripes(leaf, chunk); + sub_stripes = btrfs_chunk_sub_stripes(leaf, chunk); + type = btrfs_chunk_type(leaf, chunk); + + if (!num_stripes) { + btrfs_err(fs_info, "invalid chunk num_stripes: %u", + num_stripes); + return -EIO; + } + if (!IS_ALIGNED(logical, fs_info->sectorsize)) { + btrfs_err(fs_info, "invalid chunk logical %llu", logical); + return -EIO; + } + if (btrfs_chunk_sector_size(leaf, chunk) != fs_info->sectorsize) { + btrfs_err(fs_info, "invalid chunk sectorsize %u", + btrfs_chunk_sector_size(leaf, chunk)); + return -EIO; + } + if (!length || !IS_ALIGNED(length, fs_info->sectorsize)) { + btrfs_err(fs_info, "invalid chunk length %llu", length); + return -EIO; + } + if (!is_power_of_2(stripe_len) || stripe_len != BTRFS_STRIPE_LEN) { + btrfs_err(fs_info, "invalid chunk stripe length: %llu", + stripe_len); + return -EIO; + } + if (~(BTRFS_BLOCK_GROUP_TYPE_MASK | BTRFS_BLOCK_GROUP_PROFILE_MASK) & + type) { + btrfs_err(fs_info, "unrecognized chunk type: %llu", + ~(BTRFS_BLOCK_GROUP_TYPE_MASK | + BTRFS_BLOCK_GROUP_PROFILE_MASK) & + btrfs_chunk_type(leaf, chunk)); + return -EIO; + } + + if ((type & BTRFS_BLOCK_GROUP_TYPE_MASK) == 0) { + btrfs_err(fs_info, "missing chunk type flag: 0x%llx", type); + return -EIO; + } + + if ((type & BTRFS_BLOCK_GROUP_SYSTEM) && + (type & (BTRFS_BLOCK_GROUP_METADATA | BTRFS_BLOCK_GROUP_DATA))) { + btrfs_err(fs_info, + "system chunk with data or metadata type: 0x%llx", type); + return -EIO; + } + + features = btrfs_super_incompat_flags(fs_info->super_copy); + if (features & BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS) + mixed = true; + + if (!mixed) { + if ((type & BTRFS_BLOCK_GROUP_METADATA) && + (type & BTRFS_BLOCK_GROUP_DATA)) { + btrfs_err(fs_info, + "mixed chunk type in non-mixed mode: 0x%llx", type); + return -EIO; + } + } + + if ((type & BTRFS_BLOCK_GROUP_RAID10 && sub_stripes != 2) || + (type & BTRFS_BLOCK_GROUP_RAID1 && num_stripes != 2) || + (type & BTRFS_BLOCK_GROUP_RAID5 && num_stripes < 2) || + (type & BTRFS_BLOCK_GROUP_RAID6 && num_stripes < 3) || + (type & BTRFS_BLOCK_GROUP_DUP && num_stripes != 2) || + ((type & BTRFS_BLOCK_GROUP_PROFILE_MASK) == 0 && num_stripes != 1)) { + btrfs_err(fs_info, + "invalid num_stripes:sub_stripes %u:%u for profile %llu", + num_stripes, sub_stripes, + type & BTRFS_BLOCK_GROUP_PROFILE_MASK); + return -EIO; + } + + return 0; +} + +/* * Common point to switch the item-specific validation. */ static int check_leaf_item(struct btrfs_fs_info *fs_info, --- a/fs/btrfs/tree-checker.h +++ b/fs/btrfs/tree-checker.h @@ -25,4 +25,8 @@ int btrfs_check_leaf_relaxed(struct btrf struct extent_buffer *leaf); int btrfs_check_node(struct btrfs_fs_info *fs_info, struct extent_buffer *node);
+int btrfs_check_chunk_valid(struct btrfs_fs_info *fs_info, + struct extent_buffer *leaf, + struct btrfs_chunk *chunk, u64 logical); + #endif --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -28,6 +28,7 @@ #include "math.h" #include "dev-replace.h" #include "sysfs.h" +#include "tree-checker.h"
const struct btrfs_raid_attr btrfs_raid_array[BTRFS_NR_RAID_TYPES] = { [BTRFS_RAID_RAID10] = { @@ -6370,99 +6371,6 @@ struct btrfs_device *btrfs_alloc_device( return dev; }
-/* Return -EIO if any error, otherwise return 0. */ -static int btrfs_check_chunk_valid(struct btrfs_fs_info *fs_info, - struct extent_buffer *leaf, - struct btrfs_chunk *chunk, u64 logical) -{ - u64 length; - u64 stripe_len; - u16 num_stripes; - u16 sub_stripes; - u64 type; - u64 features; - bool mixed = false; - - length = btrfs_chunk_length(leaf, chunk); - stripe_len = btrfs_chunk_stripe_len(leaf, chunk); - num_stripes = btrfs_chunk_num_stripes(leaf, chunk); - sub_stripes = btrfs_chunk_sub_stripes(leaf, chunk); - type = btrfs_chunk_type(leaf, chunk); - - if (!num_stripes) { - btrfs_err(fs_info, "invalid chunk num_stripes: %u", - num_stripes); - return -EIO; - } - if (!IS_ALIGNED(logical, fs_info->sectorsize)) { - btrfs_err(fs_info, "invalid chunk logical %llu", logical); - return -EIO; - } - if (btrfs_chunk_sector_size(leaf, chunk) != fs_info->sectorsize) { - btrfs_err(fs_info, "invalid chunk sectorsize %u", - btrfs_chunk_sector_size(leaf, chunk)); - return -EIO; - } - if (!length || !IS_ALIGNED(length, fs_info->sectorsize)) { - btrfs_err(fs_info, "invalid chunk length %llu", length); - return -EIO; - } - if (!is_power_of_2(stripe_len) || stripe_len != BTRFS_STRIPE_LEN) { - btrfs_err(fs_info, "invalid chunk stripe length: %llu", - stripe_len); - return -EIO; - } - if (~(BTRFS_BLOCK_GROUP_TYPE_MASK | BTRFS_BLOCK_GROUP_PROFILE_MASK) & - type) { - btrfs_err(fs_info, "unrecognized chunk type: %llu", - ~(BTRFS_BLOCK_GROUP_TYPE_MASK | - BTRFS_BLOCK_GROUP_PROFILE_MASK) & - btrfs_chunk_type(leaf, chunk)); - return -EIO; - } - - if ((type & BTRFS_BLOCK_GROUP_TYPE_MASK) == 0) { - btrfs_err(fs_info, "missing chunk type flag: 0x%llx", type); - return -EIO; - } - - if ((type & BTRFS_BLOCK_GROUP_SYSTEM) && - (type & (BTRFS_BLOCK_GROUP_METADATA | BTRFS_BLOCK_GROUP_DATA))) { - btrfs_err(fs_info, - "system chunk with data or metadata type: 0x%llx", type); - return -EIO; - } - - features = btrfs_super_incompat_flags(fs_info->super_copy); - if (features & BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS) - mixed = true; - - if (!mixed) { - if ((type & BTRFS_BLOCK_GROUP_METADATA) && - (type & BTRFS_BLOCK_GROUP_DATA)) { - btrfs_err(fs_info, - "mixed chunk type in non-mixed mode: 0x%llx", type); - return -EIO; - } - } - - if ((type & BTRFS_BLOCK_GROUP_RAID10 && sub_stripes != 2) || - (type & BTRFS_BLOCK_GROUP_RAID1 && num_stripes != 2) || - (type & BTRFS_BLOCK_GROUP_RAID5 && num_stripes < 2) || - (type & BTRFS_BLOCK_GROUP_RAID6 && num_stripes < 3) || - (type & BTRFS_BLOCK_GROUP_DUP && num_stripes != 2) || - ((type & BTRFS_BLOCK_GROUP_PROFILE_MASK) == 0 && - num_stripes != 1)) { - btrfs_err(fs_info, - "invalid num_stripes:sub_stripes %u:%u for profile %llu", - num_stripes, sub_stripes, - type & BTRFS_BLOCK_GROUP_PROFILE_MASK); - return -EIO; - } - - return 0; -} - static void btrfs_report_missing_device(struct btrfs_fs_info *fs_info, u64 devid, u8 *uuid, bool error) {