/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Common syscall restarting data
 */
#ifndef __LINUX_RESTART_BLOCK_H
#define __LINUX_RESTART_BLOCK_H

#include <linux/compiler.h>
#include <linux/time64.h>
#include <linux/types.h>

struct __kernel_timespec;
struct timespec;
struct old_timespec32;
struct pollfd;

enum timespec_type {
        TT_NONE         = 0,
        TT_NATIVE       = 1,
        TT_COMPAT       = 2,
};

/*
 * System call restart block.
 */
struct restart_block {
        unsigned long arch_data;
        long (*fn)(struct restart_block *);
        union {
                /* For futex_wait() */
                struct {
                        u32 __user *uaddr;
                        u32 val;
                        u32 flags;
                        u32 bitset;
                        ktime_t time;
                        u32 __user *uaddr2;
                } futex;
                /* For nanosleep */
                struct {
                        clockid_t clockid;
                        enum timespec_type type;
                        union {
                                struct __kernel_timespec __user *rmtp;
                                struct old_timespec32 __user *compat_rmtp;
                        };
                        ktime_t expires;
                } nanosleep;
                /* For poll */
                struct {
                        struct pollfd __user *ufds;
                        int nfds;
                        int has_timeout;
                        struct timespec64 end_time;
                } poll;
        };
};

extern long do_no_restart_syscall(struct restart_block *parm);

#endif /* __LINUX_RESTART_BLOCK_H */