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Commit 421f0281 authored by Andi Kleen's avatar Andi Kleen Committed by Andi Kleen
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[PATCH] x86-64: Define IGNORE_IOCTL() macro for compat_ioctls 



Define a new IGNORE_IOCTL() to let a compat ioctl not be warned about even when
it is not implemented.

This is the same as COMPATIBLE_IOCTL internally, but better self documentng.

Valid reasons to use this:
- It is implemented with ->compat_ioctl on some device, but programs
  call it on others too.
- The ioctl is not implemented in the native kernel, but programs
  call it commonly anyways.
Most other reasons are not valid.

Signed-off-by: default avatarAndi Kleen <ak@suse.de>
parent 05cb007d

fs/compat_ioctl.c

+8 −0
Original line number Diff line number Diff line
@@ -2396,6 +2396,14 @@ lp_timeout_trans(unsigned int fd, unsigned int cmd, unsigned long arg) 
#define ULONG_IOCTL(cmd) \

	{ (cmd), (ioctl_trans_handler_t)sys_ioctl },



/* ioctl should not be warned about even if it's not implemented.

   Valid reasons to use this:

   - It is implemented with ->compat_ioctl on some device, but programs

   call it on others too.

   - The ioctl is not implemented in the native kernel, but programs

   call it commonly anyways.

   Most other reasons are not valid. */

#define IGNORE_IOCTL(cmd) COMPATIBLE_IOCTL(cmd)



struct ioctl_trans ioctl_start[] = {

#include <linux/compat_ioctl.h>