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Date: Mon, 9 Nov 2020 13:55:16 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Johannes Thumshirn <jthumshirn@...e.de>,
Qu Wenruo <wqu@...e.com>, David Sterba <dsterba@...e.com>,
Ben Hutchings <ben.hutchings@...ethink.co.uk>
Subject: [PATCH 4.19 22/71] btrfs: Move btrfs_check_chunk_valid() to tree-check.[ch] and export it
From: Qu Wenruo <wqu@...e.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@...e.de>
Signed-off-by: Qu Wenruo <wqu@...e.com>
Reviewed-by: David Sterba <dsterba@...e.com>
Signed-off-by: David Sterba <dsterba@...e.com>
[bwh: Cherry-picked for 4.19 to ease backporting later fixes]
Signed-off-by: Ben Hutchings <ben.hutchings@...ethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.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)
{
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