Eric W. Biederman a2982cc922 vfs: Generalize filesystem nodev handling. ...

Introduce a function may_open_dev that tests MNT_NODEV and a new
superblock flab SB_I_NODEV.  Use this new function in all of the
places where MNT_NODEV was previously tested.

Add the new SB_I_NODEV s_iflag to proc, sysfs, and mqueuefs as those
filesystems should never support device nodes, and a simple superblock
flags makes that very hard to get wrong.  With SB_I_NODEV set if any
device nodes somehow manage to show up on on a filesystem those
device nodes will be unopenable.

Acked-by: Seth Forshee <seth.forshee@canonical.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>

2016-06-23 15:41:57 -05:00

..

compat_mq.c

ipc, kernel: use Linux headers

2014-06-06 16:08:14 -07:00

compat.c

ipc: resolve shadow warnings

2014-10-14 02:18:23 +02:00

ipc_sysctl.c

ipc/msg: increase MSGMNI, remove scaling

2014-12-13 12:42:52 -08:00

Makefile

ipc/msg: increase MSGMNI, remove scaling

2014-12-13 12:42:52 -08:00

mq_sysctl.c

ipc: convert use of typedef ctl_table to struct ctl_table

2014-06-06 16:08:16 -07:00

mqueue.c

vfs: Generalize filesystem nodev handling.

2016-06-23 15:41:57 -05:00

msg.c

Initialize msg/shm IPC objects before doing ipc_addid()

2015-09-30 12:48:40 -04:00

msgutil.c

ipc,msg: drop dst nil validation in copy_msg

2015-11-06 17:50:42 -08:00

namespace.c

ipc: Initialize ipc_namespace->user_ns early.

2016-06-23 15:41:53 -05:00

sem.c

ipc/sem: make semctl setting sempid consistent

2016-03-22 15:36:02 -07:00

shm.c

ipc, shm: make shmem attach/detach wait for mmap_sem killable

2016-05-23 17:04:14 -07:00

syscall.c

get rid of union semop in sys_semctl(2) arguments

2013-03-05 15:14:16 -05:00

util.c

tree wide: use kvfree() than conditional kfree()/vfree()

2016-01-22 17:02:18 -08:00

util.h

tree wide: use kvfree() than conditional kfree()/vfree()

2016-01-22 17:02:18 -08:00