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Subject[PATCH] f2fs: add sanity check for quota sysfile ino
Date
Add missing sanity check for quota sysfile ino.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
---
fs/f2fs/super.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)

diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 368f63d7bad2..6011071688ca 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -2116,6 +2116,25 @@ static int sanity_check_raw_super(struct f2fs_sb_info *sbi,
return 1;
}

+ /* check quota sysfile ino info */
+ if (raw_super->feature & cpu_to_le32(F2FS_FEATURE_QUOTA_INO)) {
+ if (le32_to_cpu(raw_super->qf_ino[0]) != 4 ||
+ le32_to_cpu(raw_super->qf_ino[1]) != 5) {
+ f2fs_msg(sb, KERN_INFO,
+ "Invalid Quota Ino: user_ino(%u), grp_ino(%u)",
+ le32_to_cpu(raw_super->qf_ino[0]),
+ le32_to_cpu(raw_super->qf_ino[1]));
+ return 1;
+ }
+ if (raw_super->feature & cpu_to_le32(F2FS_FEATURE_PRJQUOTA) &&
+ le32_to_cpu(raw_super->qf_ino[2]) != 6) {
+ f2fs_msg(sb, KERN_INFO,
+ "Invalid Quota Ino: prj_ino(%u)",
+ le32_to_cpu(raw_super->qf_ino[2]));
+ return 1;
+ }
+ }
+
if (le32_to_cpu(raw_super->segment_count) > F2FS_MAX_SEGMENT) {
f2fs_msg(sb, KERN_INFO,
"Invalid segment count (%u)",
--
2.15.0.55.gc2ece9dc4de6
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