[mirror_ubuntu-jammy-kernel.git] / include / linux / restart_block.h

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

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 {
	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 __kernel_timespec __user *rmtp;
				struct old_timespec32 __user *compat_rmtp;
			};
			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 */
Commit	Line	Data
	1	/* SPDX-License-Identifier: GPL-2.0 */
	2	/*
	3	* Common syscall restarting data
	4	*/
	5	#ifndef __LINUX_RESTART_BLOCK_H
	6	#define __LINUX_RESTART_BLOCK_H
	7
	8	#include <linux/compiler.h>
	9	#include <linux/types.h>
	10	#include <linux/time64.h>
	11
	12	struct timespec;
	13	struct old_timespec32;
	14	struct pollfd;
	15
	16	enum timespec_type {
	17	TT_NONE = 0,
	18	TT_NATIVE = 1,
	19	TT_COMPAT = 2,
	20	};
	21
	22	/*
	23	* System call restart block.
	24	*/
	25	struct restart_block {
	26	long (fn)(struct restart_block );
	27	union {
	28	/* For futex_wait and futex_wait_requeue_pi */
	29	struct {
	30	u32 __user *uaddr;
	31	u32 val;
	32	u32 flags;
	33	u32 bitset;
	34	u64 time;
	35	u32 __user *uaddr2;
	36	} futex;
	37	/* For nanosleep */
	38	struct {
	39	clockid_t clockid;
	40	enum timespec_type type;
	41	union {
	42	struct __kernel_timespec __user *rmtp;
	43	struct old_timespec32 __user *compat_rmtp;
	44	};
	45	u64 expires;
	46	} nanosleep;
	47	/* For poll */
	48	struct {
	49	struct pollfd __user *ufds;
	50	int nfds;
	51	int has_timeout;
	52	unsigned long tv_sec;
	53	unsigned long tv_nsec;
	54	} poll;
	55	};
	56	};
	57
	58	extern long do_no_restart_syscall(struct restart_block *parm);
	59
	60	#endif /* __LINUX_RESTART_BLOCK_H */