[mirror_ubuntu-bionic-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>

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 */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
53d74d05 MR	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
	11	struct timespec;
	12	struct compat_timespec;
	13	struct pollfd;
	14
edbeda46 AV	15	enum timespec_type {
	16	TT_NONE = 0,
	17	TT_NATIVE = 1,
	18	#ifdef CONFIG_COMPAT
	19	TT_COMPAT = 2,
	20	#endif
	21	};
	22
53d74d05 MR	23	/*
	24	* System call restart block.
	25	*/
	26	struct restart_block {
	27	long (fn)(struct restart_block );
	28	union {
	29	/* For futex_wait and futex_wait_requeue_pi */
	30	struct {
	31	u32 __user *uaddr;
	32	u32 val;
	33	u32 flags;
	34	u32 bitset;
	35	u64 time;
	36	u32 __user *uaddr2;
	37	} futex;
	38	/* For nanosleep */
	39	struct {
	40	clockid_t clockid;
edbeda46 AV	41	enum timespec_type type;
	42	union {
	43	struct timespec __user *rmtp;
53d74d05	44	#ifdef CONFIG_COMPAT
edbeda46	45	struct compat_timespec __user *compat_rmtp;
53d74d05	46	#endif
edbeda46	47	};
53d74d05 MR	48	u64 expires;
	49	} nanosleep;
	50	/* For poll */
	51	struct {
	52	struct pollfd __user *ufds;
	53	int nfds;
	54	int has_timeout;
	55	unsigned long tv_sec;
	56	unsigned long tv_nsec;
	57	} poll;
	58	};
	59	};
	60
	61	extern long do_no_restart_syscall(struct restart_block *parm);
	62
	63	#endif /* __LINUX_RESTART_BLOCK_H */