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| author | Qiuyang Sun <sunqiuyang@huawei.com> | 2019-09-23 12:22:35 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2019-10-22 10:32:42 -0700 |
| commit | 9f701f6c772b15461843b92f9b41a0705e190a86 (patch) | |
| tree | 9b269f39919d22348f0351ac054d2617bc9f6147 /fs/f2fs | |
| parent | 46d9ce195a2b1b8aceeafae1d8f407383a117b0e (diff) | |
| download | linux-9f701f6c772b15461843b92f9b41a0705e190a86.tar.bz2 | |
f2fs: check total_segments from devices in raw_super
For multi-device F2FS, we should check if the sum of total_segments from
all devices matches segment_count.
Signed-off-by: Qiuyang Sun <sunqiuyang@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs')
| -rw-r--r-- | fs/f2fs/super.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index f3a68af3b43a..112eb86a120f 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -2604,6 +2604,21 @@ static int sanity_check_raw_super(struct f2fs_sb_info *sbi, return -EFSCORRUPTED; } + if (RDEV(0).path[0]) { + block_t dev_seg_count = le32_to_cpu(RDEV(0).total_segments); + int i = 1; + + while (i < MAX_DEVICES && RDEV(i).path[0]) { + dev_seg_count += le32_to_cpu(RDEV(i).total_segments); + i++; + } + if (segment_count != dev_seg_count) { + f2fs_info(sbi, "Segment count (%u) mismatch with total segments from devices (%u)", + segment_count, dev_seg_count); + return -EFSCORRUPTED; + } + } + if (secs_per_zone > total_sections || !secs_per_zone) { f2fs_info(sbi, "Wrong secs_per_zone / total_sections (%u, %u)", secs_per_zone, total_sections); |