2
0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-25 05:34:00 +08:00
linux-next/include/linux/restart_block.h
Al Viro edbeda4632 time/posix-timers: Move the compat copyouts to the nanosleep implementations
Turn restart_block.nanosleep.{rmtp,compat_rmtp} into a tagged union (kind =
1 -> native, kind = 2 -> compat, kind = 0 -> nothing) and make the places
doing actual copyout handle compat as well as native (that will become a
helper in the next commit).  Result: compat wrappers, messing with
reassignments, etc. are gone.

[ tglx: Folded in a variant of Peter Zijlstras enum patch ]

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20170607084241.28657-6-viro@ZenIV.linux.org.uk
2017-06-14 00:00:42 +02:00

63 lines
1.1 KiB
C

/*
* Common syscall restarting data
*/
#ifndef __LINUX_RESTART_BLOCK_H
#define __LINUX_RESTART_BLOCK_H
#include <linux/compiler.h>
#include <linux/types.h>
struct timespec;
struct compat_timespec;
struct pollfd;
enum timespec_type {
TT_NONE = 0,
TT_NATIVE = 1,
#ifdef CONFIG_COMPAT
TT_COMPAT = 2,
#endif
};
/*
* System call restart block.
*/
struct restart_block {
long (*fn)(struct restart_block *);
union {
/* For futex_wait and futex_wait_requeue_pi */
struct {
u32 __user *uaddr;
u32 val;
u32 flags;
u32 bitset;
u64 time;
u32 __user *uaddr2;
} futex;
/* For nanosleep */
struct {
clockid_t clockid;
enum timespec_type type;
union {
struct timespec __user *rmtp;
#ifdef CONFIG_COMPAT
struct compat_timespec __user *compat_rmtp;
#endif
};
u64 expires;
} nanosleep;
/* For poll */
struct {
struct pollfd __user *ufds;
int nfds;
int has_timeout;
unsigned long tv_sec;
unsigned long tv_nsec;
} poll;
};
};
extern long do_no_restart_syscall(struct restart_block *parm);
#endif /* __LINUX_RESTART_BLOCK_H */