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autofs: mount point create should honour passed in mode 

The autofs file system mkdir inode operation blindly sets the created
directory mode to S_IFDIR | 0555, ingoring the passed in mode, which can
cause selinux dac_override denials.

But the function also checks if the caller is the daemon (as no-one else
should be able to do anything here) so there's no point in not honouring
the passed in mode, allowing the daemon to set appropriate mode when
required.

Link: http://lkml.kernel.org/r/152361593601.8051.14014139124905996173.stgit@pluto.themaw.net
Signed-off-by: Ian Kent <raven@themaw.net>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Ian Kent 2018-04-20 14:55:59 -07:00 committed by Linus Torvalds
parent 1551cf740c
commit 1e6306652b
1 changed files with 1 additions and 1 deletions
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2
fs/autofs4/root.c
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@ -749,7 +749,7 @@ static int autofs4_dir_mkdir(struct inode *dir,
autofs4_del_active(dentry); autofs4_del_active(dentry);
inode = autofs4_get_inode(dir->i_sb, S_IFDIR | 0555); inode = autofs4_get_inode(dir->i_sb, S_IFDIR | mode);
if (!inode) if (!inode)
return -ENOMEM; return -ENOMEM;
d_add(dentry, inode); d_add(dentry, inode);