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
9#ifndef O_DIRECTORY
10#define O_DIRECTORY 00200000
11#endif
12#ifndef AT_FDCWD
13#define AT_FDCWD -100
14#endif
15
16int test__syscall_openat_tp_fields(int subtest __maybe_unused)
17{
18 struct record_opts opts = {
19 .target = {
20 .uid = UINT_MAX,
21 .uses_mmap = true,
22 },
23 .no_buffering = true,
24 .freq = 1,
25 .mmap_pages = 256,
26 .raw_samples = true,
27 };
28 const char *filename = "/etc/passwd";
29 int flags = O_RDONLY | O_DIRECTORY;
30 struct perf_evlist *evlist = perf_evlist__new();
31 struct perf_evsel *evsel;
32 int err = -1, i, nr_events = 0, nr_polls = 0;
33 char sbuf[STRERR_BUFSIZE];
34
35 if (evlist == NULL) {
36 pr_debug("%s: perf_evlist__new\n", __func__);
37 goto out;
38 }
39
40 evsel = perf_evsel__newtp("syscalls", "sys_enter_openat");
41 if (IS_ERR(evsel)) {
42 pr_debug("%s: perf_evsel__newtp\n", __func__);
43 goto out_delete_evlist;
44 }
45
46 perf_evlist__add(evlist, evsel);
47
48 err = perf_evlist__create_maps(evlist, &opts.target);
49 if (err < 0) {
50 pr_debug("%s: perf_evlist__create_maps\n", __func__);
51 goto out_delete_evlist;
52 }
53
54 perf_evsel__config(evsel, &opts, NULL);
55
56 thread_map__set_pid(evlist->threads, 0, getpid());
57
58 err = perf_evlist__open(evlist);
59 if (err < 0) {
60 pr_debug("perf_evlist__open: %s\n",
61 str_error_r(errno, sbuf, sizeof(sbuf)));
62 goto out_delete_evlist;
63 }
64
65 err = perf_evlist__mmap(evlist, UINT_MAX, false);
66 if (err < 0) {
67 pr_debug("perf_evlist__mmap: %s\n",
68 str_error_r(errno, sbuf, sizeof(sbuf)));
69 goto out_delete_evlist;
70 }
71
72 perf_evlist__enable(evlist);
73
74
75
76
77 openat(AT_FDCWD, filename, flags);
78
79 while (1) {
80 int before = nr_events;
81
82 for (i = 0; i < evlist->nr_mmaps; i++) {
83 union perf_event *event;
84
85 while ((event = perf_evlist__mmap_read(evlist, i)) != NULL) {
86 const u32 type = event->header.type;
87 int tp_flags;
88 struct perf_sample sample;
89
90 ++nr_events;
91
92 if (type != PERF_RECORD_SAMPLE) {
93 perf_evlist__mmap_consume(evlist, i);
94 continue;
95 }
96
97 err = perf_evsel__parse_sample(evsel, event, &sample);
98 if (err) {
99 pr_debug("Can't parse sample, err = %d\n", err);
100 goto out_delete_evlist;
101 }
102
103 tp_flags = perf_evsel__intval(evsel, &sample, "flags");
104
105 if (flags != tp_flags) {
106 pr_debug("%s: Expected flags=%#x, got %#x\n",
107 __func__, flags, tp_flags);
108 goto out_delete_evlist;
109 }
110
111 goto out_ok;
112 }
113 }
114
115 if (nr_events == before)
116 perf_evlist__poll(evlist, 10);
117
118 if (++nr_polls > 5) {
119 pr_debug("%s: no events!\n", __func__);
120 goto out_delete_evlist;
121 }
122 }
123out_ok:
124 err = 0;
125out_delete_evlist:
126 perf_evlist__delete(evlist);
127out:
128 return err;
129}
130
