[lttng-modules.git] / src / lttng-syscalls.h

/* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
 *
 * lttng-syscalls.h
 *
 * LTTng syscall header.
 *
 * Copyright (C) 2021 Francis Deslauriers <francis.deslauriers@efficios.com>
 */

#ifndef LTTNG_SYSCALLS_H
#define LTTNG_SYSCALLS_H

#include <stddef.h>

#include <asm/ptrace.h>
#include <linux/compat.h>
#include <linux/fcntl.h>
#include <linux/in.h>
#include <linux/in6.h>
#include <linux/mman.h>

#include <lttng/events.h>
#include <lttng/kernel-version.h>


/*
 * Forward declarations for old kernels.
 */
struct mmsghdr;
struct rlimit64;
struct oldold_utsname;
struct old_utsname;
struct sel_arg_struct;
struct mmap_arg_struct;
struct file_handle;
struct user_msghdr;

/*
 * Forward declaration for kernels >= 5.6
 */
struct timex;
struct timeval;
struct itimerval;
struct itimerspec;

#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,6,0))
typedef __kernel_old_time_t time_t;
#endif

struct trace_syscall_entry {
	void *event_func;
	const struct lttng_kernel_event_desc *desc;
	const struct lttng_kernel_event_field * const *fields;
	unsigned int nrargs;
};

struct trace_syscall_table {
	const struct trace_syscall_entry *table;
	const size_t len;
};

extern
void syscall_entry_event_probe(void *__data, struct pt_regs *regs, long id);

extern
void syscall_exit_event_probe(void *__data, struct pt_regs *regs, long ret);

extern
void syscall_entry_event_notifier_probe(void *__data, struct pt_regs *regs,
		long id);
extern
void syscall_exit_event_notifier_probe(void *__data, struct pt_regs *regs,
		long ret);

#endif /* LTTNG_SYSCALLS_H */
Commit	Line	Data
	1	/* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
	2	*
	3	* lttng-syscalls.h
	4	*
	5	* LTTng syscall header.
	6	*
	7	* Copyright (C) 2021 Francis Deslauriers <francis.deslauriers@efficios.com>
	8	*/
	9
	10	#ifndef LTTNG_SYSCALLS_H
	11	#define LTTNG_SYSCALLS_H
	12
	13	#include <stddef.h>
	14
	15	#include <asm/ptrace.h>
	16	#include <linux/compat.h>
	17	#include <linux/fcntl.h>
	18	#include <linux/in.h>
	19	#include <linux/in6.h>
	20	#include <linux/mman.h>
	21
	22	#include <lttng/events.h>
	23	#include <lttng/kernel-version.h>
	24
	25
	26	/*
	27	* Forward declarations for old kernels.
	28	*/
	29	struct mmsghdr;
	30	struct rlimit64;
	31	struct oldold_utsname;
	32	struct old_utsname;
	33	struct sel_arg_struct;
	34	struct mmap_arg_struct;
	35	struct file_handle;
	36	struct user_msghdr;
	37
	38	/*
	39	* Forward declaration for kernels >= 5.6
	40	*/
	41	struct timex;
	42	struct timeval;
	43	struct itimerval;
	44	struct itimerspec;
	45
	46	#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,6,0))
	47	typedef __kernel_old_time_t time_t;
	48	#endif
	49
	50	struct trace_syscall_entry {
	51	void *event_func;
	52	const struct lttng_kernel_event_desc *desc;
	53	const struct lttng_kernel_event_field * const *fields;
	54	unsigned int nrargs;
	55	};
	56
	57	struct trace_syscall_table {
	58	const struct trace_syscall_entry *table;
	59	const size_t len;
	60	};
	61
	62	extern
	63	void syscall_entry_event_probe(void __data, struct pt_regs regs, long id);
	64
	65	extern
	66	void syscall_exit_event_probe(void __data, struct pt_regs regs, long ret);
	67
	68	extern
	69	void syscall_entry_event_notifier_probe(void __data, struct pt_regs regs,
	70	long id);
	71	extern
	72	void syscall_exit_event_notifier_probe(void __data, struct pt_regs regs,
	73	long ret);
	74
	75	#endif /* LTTNG_SYSCALLS_H */