WSL2-Linux-Kernel/security
Serge E. Hallyn 0b82ac37b8 devices cgroup: allow mkfifo
The devcgroup_inode_permission() hook in the devices whitelist cgroup has
always bypassed access checks on fifos.  But the mknod hook did not.  The
devices whitelist is only about block and char devices, and fifos can't
even be added to the whitelist, so fifos can't be created at all except by
tasks which have 'a' in their whitelist (meaning they have access to all
devices).

Fix the behavior by bypassing access checks to mkfifo.

Signed-off-by: Serge E. Hallyn <serue@us.ibm.com>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Cc: Pavel Emelyanov <xemul@openvz.org>
Cc: Paul Menage <menage@google.com>
Cc: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: James Morris <jmorris@namei.org>
Reported-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Cc: <stable@kernel.org>		[2.6.27.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-08 08:31:03 -08:00
..
keys keys: fix sparse warning by adding __user annotation to cast 2009-01-01 10:32:44 +11:00
selinux Merge branch 'next' into for-linus 2009-01-07 09:58:22 +11:00
smack Merge branch 'next' into for-linus 2009-01-07 09:58:22 +11:00
Kconfig introduce new LSM hooks where vfsmount is available. 2008-12-31 18:07:37 -05:00
Makefile securityfs: do not depend on CONFIG_SECURITY 2008-08-28 10:47:42 +10:00
capability.c Revert "CRED: Fix regression in cap_capable() as shown up by sys_faccessat() [ver #2]" 2009-01-07 09:21:54 +11:00
commoncap.c Merge branch 'next' into for-linus 2009-01-07 09:58:22 +11:00
device_cgroup.c devices cgroup: allow mkfifo 2009-01-08 08:31:03 -08:00
inode.c zero i_uid/i_gid on inode allocation 2009-01-05 11:54:28 -05:00
root_plug.c Revert "CRED: Fix regression in cap_capable() as shown up by sys_faccessat() [ver #2]" 2009-01-07 09:21:54 +11:00
security.c Merge branch 'next' into for-linus 2009-01-07 09:58:22 +11:00