Messages in this thread Patch in this message | | | From | Chao Yu <> | Subject | [PATCH] f2fs: add sanity check for quota sysfile ino | Date | Mon, 29 Jan 2018 16:29:33 +0800 |
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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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