lkml.org 
[lkml]   [2018]   [Mar]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [f2fs-dev] [PATCH] f2fs: avoid selinux denial on CAP_SYS_RESOURCE
From
Date
On 2018/3/10 5:57, Jaegeuk Kim wrote:
> On 03/09, Chao Yu wrote:
>> On 2018/3/9 12:49, Jaegeuk Kim wrote:
>>> This fixes CAP_SYS_RESOURCE denial of selinux when using resgid.
>>
>> A little confusion, if capable(CAP_SYS_RESOURCE) is false, we still have chance
>> to return true for below resuid & resgid cases, right?
>
> I didn't dig it deeply tho, it seems selinux log came up when capable() is
> failed in the first place. We actually didn't need to show it up, since next
> resgid will give mostly true.

Got it, how about adding this reason into commit message? Anyway,

Reviewed-by: Chao Yu <yuchao0@huawei.com>

Thanks,

>
>>
>> Thanks,
>>
>>>
>>> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
>>> ---
>>> fs/f2fs/f2fs.h | 4 ++--
>>> 1 file changed, 2 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
>>> index f6dc70666ebb..3d12277fbe9e 100644
>>> --- a/fs/f2fs/f2fs.h
>>> +++ b/fs/f2fs/f2fs.h
>>> @@ -1607,13 +1607,13 @@ static inline bool __allow_reserved_blocks(struct f2fs_sb_info *sbi,
>>> return false;
>>> if (IS_NOQUOTA(inode))
>>> return true;
>>> - if (capable(CAP_SYS_RESOURCE))
>>> - return true;
>>> if (uid_eq(sbi->s_resuid, current_fsuid()))
>>> return true;
>>> if (!gid_eq(sbi->s_resgid, GLOBAL_ROOT_GID) &&
>>> in_group_p(sbi->s_resgid))
>>> return true;
>>> + if (capable(CAP_SYS_RESOURCE))
>>> + return true;
>>> return false;
>>> }
>>>
>>>
>
> ------------------------------------------------------------------------------
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> _______________________________________________
> Linux-f2fs-devel mailing list
> Linux-f2fs-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
>

\
 
 \ /
  Last update: 2018-03-14 14:08    [W:0.057 / U:2.908 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site