1#include <linux/err.h>
2#include "perf.h"
3#include "evlist.h"
4#include "evsel.h"
5#include "thread_map.h"
6#include "tests.h"
7#include "debug.h"
8
9int test__syscall_openat_tp_fields(int subtest __maybe_unused)
10{
11 struct record_opts opts = {
12 .target = {
13 .uid = UINT_MAX,
14 .uses_mmap = true,
15 },
16 .no_buffering = true,
17 .freq = 1,
18 .mmap_pages = 256,
19 .raw_samples = true,
20 };
21 const char *filename = "/etc/passwd";
22 int flags = O_RDONLY | O_DIRECTORY;
23 struct perf_evlist *evlist = perf_evlist__new();
24 struct perf_evsel *evsel;
25 int err = -1, i, nr_events = 0, nr_polls = 0;
26 char sbuf[STRERR_BUFSIZE];
27
28 if (evlist == NULL) {
29 pr_debug("%s: perf_evlist__new\n", __func__);
30 goto out;
31 }
32
33 evsel = perf_evsel__newtp("syscalls", "sys_enter_openat");
34 if (IS_ERR(evsel)) {
35 pr_debug("%s: perf_evsel__newtp\n", __func__);
36 goto out_delete_evlist;
37 }
38
39 perf_evlist__add(evlist, evsel);
40
41 err = perf_evlist__create_maps(evlist, &opts.target);
42 if (err < 0) {
43 pr_debug("%s: perf_evlist__create_maps\n", __func__);
44 goto out_delete_evlist;
45 }
46
47 perf_evsel__config(evsel, &opts);
48
49 thread_map__set_pid(evlist->threads, 0, getpid());
50
51 err = perf_evlist__open(evlist);
52 if (err < 0) {
53 pr_debug("perf_evlist__open: %s\n",
54 strerror_r(errno, sbuf, sizeof(sbuf)));
55 goto out_delete_evlist;
56 }
57
58 err = perf_evlist__mmap(evlist, UINT_MAX, false);
59 if (err < 0) {
60 pr_debug("perf_evlist__mmap: %s\n",
61 strerror_r(errno, sbuf, sizeof(sbuf)));
62 goto out_delete_evlist;
63 }
64
65 perf_evlist__enable(evlist);
66
67
68
69
70 openat(AT_FDCWD, filename, flags);
71
72 while (1) {
73 int before = nr_events;
74
75 for (i = 0; i < evlist->nr_mmaps; i++) {
76 union perf_event *event;
77
78 while ((event = perf_evlist__mmap_read(evlist, i)) != NULL) {
79 const u32 type = event->header.type;
80 int tp_flags;
81 struct perf_sample sample;
82
83 ++nr_events;
84
85 if (type != PERF_RECORD_SAMPLE) {
86 perf_evlist__mmap_consume(evlist, i);
87 continue;
88 }
89
90 err = perf_evsel__parse_sample(evsel, event, &sample);
91 if (err) {
92 pr_debug("Can't parse sample, err = %d\n", err);
93 goto out_delete_evlist;
94 }
95
96 tp_flags = perf_evsel__intval(evsel, &sample, "flags");
97
98 if (flags != tp_flags) {
99 pr_debug("%s: Expected flags=%#x, got %#x\n",
100 __func__, flags, tp_flags);
101 goto out_delete_evlist;
102 }
103
104 goto out_ok;
105 }
106 }
107
108 if (nr_events == before)
109 perf_evlist__poll(evlist, 10);
110
111 if (++nr_polls > 5) {
112 pr_debug("%s: no events!\n", __func__);
113 goto out_delete_evlist;
114 }
115 }
116out_ok:
117 err = 0;
118out_delete_evlist:
119 perf_evlist__delete(evlist);
120out:
121 return err;
122}
123
