Messages in this thread | | | Date | Tue, 30 Jan 2018 19:49:14 -0800 | From | Jaegeuk Kim <> | Subject | Re: [PATCH] f2fs: add sanity check for quota sysfile ino |
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On 01/31, Chao Yu wrote: > On 2018/1/31 10:36, Jaegeuk Kim wrote: > > On 01/31, Chao Yu wrote: > >> On 2018/1/31 9:35, Jaegeuk Kim wrote: > >>> On 01/29, Chao Yu wrote: > >>>> Add missing sanity check for quota sysfile ino. > >>> > >>> We don't need to limit the specific inode numbers for quota files, since > >>> we may be able to set any inode numbers later. How about checkint the > >>> numbers are allocated as quota? > > > > If quota_ino is set, f2fs_enable_quotas() will be failed, if its ino is invalid. > > It'd be also fine, if we have no inode numbers there. What I mean was we may need > > to consider reallocating or deallocating inode numbers later. > > Oh, so that it will be better to do more check & repair in fsck tools, right?
What is the rule that you're considering? We're already checking quota inodes in fsck.f2fs.
> > Thanks, > > > > >> > >> Do you mean: > >> > >> if (raw_super->feature & cpu_to_le32(F2FS_FEATURE_QUOTA_INO)) { > >> if (!le32_to_cpu(raw_super->qf_ino[0]) || > >> !le32_to_cpu(raw_super->qf_ino[1])) { > >> 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])) { > >> f2fs_msg(sb, KERN_INFO, > >> "Invalid Quota Ino: prj_ino(%u)", > >> le32_to_cpu(raw_super->qf_ino[2])); > >> return 1; > >> } > >> } > >> > >> I think it's equal to: > >> > >> if (raw_super->feature & cpu_to_le32(F2FS_FEATURE_QUOTA_INO)) { > >> unsigned int qf_cnt = 0; > >> if (qf_ino[0]) > >> qf_cnt++; > >> if (qf_ino[1]) > >> qf_cnt++; > >> if (qf_cnt != 2) { > >> f2fs_msg(); > >> return 1; > >> } > >> if (raw_super->feature & cpu_to_le32(F2FS_FEATURE_PRJQUOTA)) { > >> if (qf_ino[2]) > >> qf_cnt++; > >> if (qf_cnt != 3) { > >> f2fs_msg(); > >> return 1; > >> } > >> } > >> } > >> > >> Thanks, > >> > >>> > >>>> > >>>> 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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