1#ifndef _PERF_TARGET_H
 2#define _PERF_TARGET_H
 3
 4#include <stdbool.h>
 5#include <sys/types.h>
 6
 7struct perf_target {
 8	const char   *pid;
 9	const char   *tid;
10	const char   *cpu_list;
11	const char   *uid_str;
12	uid_t	     uid;
13	bool	     system_wide;
14	bool	     uses_mmap;
15};
16
17enum perf_target_errno {
18	PERF_ERRNO_TARGET__SUCCESS		= 0,
19
20	/*
21	 * Choose an arbitrary negative big number not to clash with standard
22	 * errno since SUS requires the errno has distinct positive values.
23	 * See 'Issue 6' in the link below.
24	 *
25	 * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html
26	 */
27	__PERF_ERRNO_TARGET__START		= -10000,
28
29
30	/* for perf_target__validate() */
31	PERF_ERRNO_TARGET__PID_OVERRIDE_CPU	= __PERF_ERRNO_TARGET__START,
32	PERF_ERRNO_TARGET__PID_OVERRIDE_UID,
33	PERF_ERRNO_TARGET__UID_OVERRIDE_CPU,
34	PERF_ERRNO_TARGET__PID_OVERRIDE_SYSTEM,
35	PERF_ERRNO_TARGET__UID_OVERRIDE_SYSTEM,
36
37	/* for perf_target__parse_uid() */
38	PERF_ERRNO_TARGET__INVALID_UID,
39	PERF_ERRNO_TARGET__USER_NOT_FOUND,
40
41	__PERF_ERRNO_TARGET__END,
42};
43
44enum perf_target_errno perf_target__validate(struct perf_target *target);
45enum perf_target_errno perf_target__parse_uid(struct perf_target *target);
46
47int perf_target__strerror(struct perf_target *target, int errnum, char *buf,
48			  size_t buflen);
49
50static inline bool perf_target__has_task(struct perf_target *target)
51{
52	return target->tid || target->pid || target->uid_str;
53}
54
55static inline bool perf_target__has_cpu(struct perf_target *target)
56{
57	return target->system_wide || target->cpu_list;
58}
59
60static inline bool perf_target__none(struct perf_target *target)
61{
62	return !perf_target__has_task(target) && !perf_target__has_cpu(target);
63}
64
65#endif /* _PERF_TARGET_H */