1#include "perf.h"
2#include "evlist.h"
3#include "evsel.h"
4#include "thread_map.h"
5#include "tests.h"
6#include "debug.h"
7
8int test__syscall_open_tp_fields(void)
9{
10	struct record_opts opts = {
11		.target = {
12			.uid = UINT_MAX,
13			.uses_mmap = true,
14		},
15		.no_buffering = true,
16		.freq	      = 1,
17		.mmap_pages   = 256,
18		.raw_samples  = true,
19	};
20	const char *filename = "/etc/passwd";
21	int flags = O_RDONLY | O_DIRECTORY;
22	struct perf_evlist *evlist = perf_evlist__new();
23	struct perf_evsel *evsel;
24	int err = -1, i, nr_events = 0, nr_polls = 0;
25	char sbuf[STRERR_BUFSIZE];
26
27	if (evlist == NULL) {
28		pr_debug("%s: perf_evlist__new\n", __func__);
29		goto out;
30	}
31
32	evsel = perf_evsel__newtp("syscalls", "sys_enter_open");
33	if (evsel == NULL) {
34		pr_debug("%s: perf_evsel__newtp\n", __func__);
35		goto out_delete_evlist;
36	}
37
38	perf_evlist__add(evlist, evsel);
39
40	err = perf_evlist__create_maps(evlist, &opts.target);
41	if (err < 0) {
42		pr_debug("%s: perf_evlist__create_maps\n", __func__);
43		goto out_delete_evlist;
44	}
45
46	perf_evsel__config(evsel, &opts);
47
48	evlist->threads->map[0] = getpid();
49
50	err = perf_evlist__open(evlist);
51	if (err < 0) {
52		pr_debug("perf_evlist__open: %s\n",
53			 strerror_r(errno, sbuf, sizeof(sbuf)));
54		goto out_delete_evlist;
55	}
56
57	err = perf_evlist__mmap(evlist, UINT_MAX, false);
58	if (err < 0) {
59		pr_debug("perf_evlist__mmap: %s\n",
60			 strerror_r(errno, sbuf, sizeof(sbuf)));
61		goto out_delete_evlist;
62	}
63
64	perf_evlist__enable(evlist);
65
66	/*
67	 * Generate the event:
68	 */
69	open(filename, flags);
70
71	while (1) {
72		int before = nr_events;
73
74		for (i = 0; i < evlist->nr_mmaps; i++) {
75			union perf_event *event;
76
77			while ((event = perf_evlist__mmap_read(evlist, i)) != NULL) {
78				const u32 type = event->header.type;
79				int tp_flags;
80				struct perf_sample sample;
81
82				++nr_events;
83
84				if (type != PERF_RECORD_SAMPLE) {
85					perf_evlist__mmap_consume(evlist, i);
86					continue;
87				}
88
89				err = perf_evsel__parse_sample(evsel, event, &sample);
90				if (err) {
91					pr_err("Can't parse sample, err = %d\n", err);
92					goto out_delete_evlist;
93				}
94
95				tp_flags = perf_evsel__intval(evsel, &sample, "flags");
96
97				if (flags != tp_flags) {
98					pr_debug("%s: Expected flags=%#x, got %#x\n",
99						 __func__, flags, tp_flags);
100					goto out_delete_evlist;
101				}
102
103				goto out_ok;
104			}
105		}
106
107		if (nr_events == before)
108			perf_evlist__poll(evlist, 10);
109
110		if (++nr_polls > 5) {
111			pr_debug("%s: no events!\n", __func__);
112			goto out_delete_evlist;
113		}
114	}
115out_ok:
116	err = 0;
117out_delete_evlist:
118	perf_evlist__delete(evlist);
119out:
120	return err;
121}
122