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syscall.h

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#ifndef _TRACE_SYSCALL_H

#define _TRACE_SYSCALL_H

#include <linux/tracepoint.h>

#include <linux/unistd.h>

#include <linux/ftrace_event.h>

#include <asm/ptrace.h>

/*

* A syscall entry in the ftrace syscalls array.

*

* @name: name of the syscall

* @nb_args: number of parameters it takes

* @types: list of types as strings

* @args: list of args as strings (args[i] matches types[i])

* @enter_id: associated ftrace enter event id

* @exit_id: associated ftrace exit event id

* @enter_event: associated syscall_enter trace event

* @exit_event: associated syscall_exit trace event

*/

struct syscall_metadata {

const char *name;

int nb_args;

const char **types;

const char **args;

int enter_id;

int exit_id;

struct ftrace_event_call *enter_event;

struct ftrace_event_call *exit_event;

};

#ifdef CONFIG_FTRACE_SYSCALLS

extern struct syscall_metadata *syscall_nr_to_meta(int nr);

extern int syscall_name_to_nr(char *name);

void set_syscall_enter_id(int num, int id);

void set_syscall_exit_id(int num, int id);

extern struct trace_event event_syscall_enter;

extern struct trace_event event_syscall_exit;

extern int reg_event_syscall_enter(void *ptr);

extern void unreg_event_syscall_enter(void *ptr);

extern int reg_event_syscall_exit(void *ptr);

extern void unreg_event_syscall_exit(void *ptr);

extern int syscall_enter_format(struct ftrace_event_call *call,

struct trace_seq *s);

extern int syscall_exit_format(struct ftrace_event_call *call,

struct trace_seq *s);

extern int syscall_enter_define_fields(struct ftrace_event_call *call);

extern int syscall_exit_define_fields(struct ftrace_event_call *call);

enum print_line_t print_syscall_enter(struct trace_iterator *iter, int flags);

enum print_line_t print_syscall_exit(struct trace_iterator *iter, int flags);

#endif

#ifdef CONFIG_EVENT_PROFILE

int reg_prof_syscall_enter(char *name);

void unreg_prof_syscall_enter(char *name);

int reg_prof_syscall_exit(char *name);

void unreg_prof_syscall_exit(char *name);

#endif

#endif /* _TRACE_SYSCALL_H */