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1// SPDX-License-Identifier: GPL-2.0
2#include <linux/err.h>
3#include <sys/types.h>
4#include <sys/stat.h>
5#include <fcntl.h>
6#include "perf.h"
7#include "evlist.h"
8#include "evsel.h"
9#include "thread_map.h"
10#include "tests.h"
11#include "debug.h"
12#include <errno.h>
13
14#ifndef O_DIRECTORY
15#define O_DIRECTORY 00200000
16#endif
17#ifndef AT_FDCWD
18#define AT_FDCWD -100
19#endif
20
21int test__syscall_openat_tp_fields(struct test *test __maybe_unused, int subtest __maybe_unused)
22{
23 struct record_opts opts = {
24 .target = {
25 .uid = UINT_MAX,
26 .uses_mmap = true,
27 },
28 .no_buffering = true,
29 .freq = 1,
30 .mmap_pages = 256,
31 .raw_samples = true,
32 };
33 const char *filename = "/etc/passwd";
34 int flags = O_RDONLY | O_DIRECTORY;
35 struct perf_evlist *evlist = perf_evlist__new();
36 struct perf_evsel *evsel;
37 int err = -1, i, nr_events = 0, nr_polls = 0;
38 char sbuf[STRERR_BUFSIZE];
39
40 if (evlist == NULL) {
41 pr_debug("%s: perf_evlist__new\n", __func__);
42 goto out;
43 }
44
45 evsel = perf_evsel__newtp("syscalls", "sys_enter_openat");
46 if (IS_ERR(evsel)) {
47 pr_debug("%s: perf_evsel__newtp\n", __func__);
48 goto out_delete_evlist;
49 }
50
51 perf_evlist__add(evlist, evsel);
52
53 err = perf_evlist__create_maps(evlist, &opts.target);
54 if (err < 0) {
55 pr_debug("%s: perf_evlist__create_maps\n", __func__);
56 goto out_delete_evlist;
57 }
58
59 perf_evsel__config(evsel, &opts, NULL);
60
61 thread_map__set_pid(evlist->threads, 0, getpid());
62
63 err = perf_evlist__open(evlist);
64 if (err < 0) {
65 pr_debug("perf_evlist__open: %s\n",
66 str_error_r(errno, sbuf, sizeof(sbuf)));
67 goto out_delete_evlist;
68 }
69
70 err = perf_evlist__mmap(evlist, UINT_MAX);
71 if (err < 0) {
72 pr_debug("perf_evlist__mmap: %s\n",
73 str_error_r(errno, sbuf, sizeof(sbuf)));
74 goto out_delete_evlist;
75 }
76
77 perf_evlist__enable(evlist);
78
79 /*
80 * Generate the event:
81 */
82 openat(AT_FDCWD, filename, flags);
83
84 while (1) {
85 int before = nr_events;
86
87 for (i = 0; i < evlist->nr_mmaps; i++) {
88 union perf_event *event;
89 struct perf_mmap *md;
90
91 md = &evlist->mmap[i];
92 if (perf_mmap__read_init(md) < 0)
93 continue;
94
95 while ((event = perf_mmap__read_event(md)) != NULL) {
96 const u32 type = event->header.type;
97 int tp_flags;
98 struct perf_sample sample;
99
100 ++nr_events;
101
102 if (type != PERF_RECORD_SAMPLE) {
103 perf_mmap__consume(md);
104 continue;
105 }
106
107 err = perf_evsel__parse_sample(evsel, event, &sample);
108 if (err) {
109 pr_debug("Can't parse sample, err = %d\n", err);
110 goto out_delete_evlist;
111 }
112
113 tp_flags = perf_evsel__intval(evsel, &sample, "flags");
114
115 if (flags != tp_flags) {
116 pr_debug("%s: Expected flags=%#x, got %#x\n",
117 __func__, flags, tp_flags);
118 goto out_delete_evlist;
119 }
120
121 goto out_ok;
122 }
123 perf_mmap__read_done(md);
124 }
125
126 if (nr_events == before)
127 perf_evlist__poll(evlist, 10);
128
129 if (++nr_polls > 5) {
130 pr_debug("%s: no events!\n", __func__);
131 goto out_delete_evlist;
132 }
133 }
134out_ok:
135 err = 0;
136out_delete_evlist:
137 perf_evlist__delete(evlist);
138out:
139 return err;
140}
1// SPDX-License-Identifier: GPL-2.0
2#include <stdbool.h>
3#include <linux/err.h>
4#include <linux/string.h>
5#include <sys/types.h>
6#include <sys/stat.h>
7#include <fcntl.h>
8#include "evlist.h"
9#include "evsel.h"
10#include "thread_map.h"
11#include "record.h"
12#include "tests.h"
13#include "debug.h"
14#include "util/mmap.h"
15#include <errno.h>
16#include <perf/mmap.h>
17#include "util/sample.h"
18
19#ifndef O_DIRECTORY
20#define O_DIRECTORY 00200000
21#endif
22#ifndef AT_FDCWD
23#define AT_FDCWD -100
24#endif
25
26static int test__syscall_openat_tp_fields(struct test_suite *test __maybe_unused,
27 int subtest __maybe_unused)
28{
29 struct record_opts opts = {
30 .target = {
31 .uid = UINT_MAX,
32 .uses_mmap = true,
33 },
34 .no_buffering = true,
35 .freq = 1,
36 .mmap_pages = 256,
37 .raw_samples = true,
38 };
39 const char *filename = "/etc/passwd";
40 int flags = O_RDONLY | O_DIRECTORY;
41 struct evlist *evlist = evlist__new();
42 struct evsel *evsel;
43 int ret = TEST_FAIL, err, i, nr_events = 0, nr_polls = 0;
44 char sbuf[STRERR_BUFSIZE];
45
46 if (evlist == NULL) {
47 pr_debug("%s: evlist__new\n", __func__);
48 goto out;
49 }
50
51 evsel = evsel__newtp("syscalls", "sys_enter_openat");
52 if (IS_ERR(evsel)) {
53 pr_debug("%s: evsel__newtp\n", __func__);
54 ret = PTR_ERR(evsel) == -EACCES ? TEST_SKIP : TEST_FAIL;
55 goto out_delete_evlist;
56 }
57
58 evlist__add(evlist, evsel);
59
60 err = evlist__create_maps(evlist, &opts.target);
61 if (err < 0) {
62 pr_debug("%s: evlist__create_maps\n", __func__);
63 goto out_delete_evlist;
64 }
65
66 evsel__config(evsel, &opts, NULL);
67
68 perf_thread_map__set_pid(evlist->core.threads, 0, getpid());
69
70 err = evlist__open(evlist);
71 if (err < 0) {
72 pr_debug("perf_evlist__open: %s\n",
73 str_error_r(errno, sbuf, sizeof(sbuf)));
74 goto out_delete_evlist;
75 }
76
77 err = evlist__mmap(evlist, UINT_MAX);
78 if (err < 0) {
79 pr_debug("evlist__mmap: %s\n",
80 str_error_r(errno, sbuf, sizeof(sbuf)));
81 goto out_delete_evlist;
82 }
83
84 evlist__enable(evlist);
85
86 /*
87 * Generate the event:
88 */
89 openat(AT_FDCWD, filename, flags);
90
91 while (1) {
92 int before = nr_events;
93
94 for (i = 0; i < evlist->core.nr_mmaps; i++) {
95 union perf_event *event;
96 struct mmap *md;
97
98 md = &evlist->mmap[i];
99 if (perf_mmap__read_init(&md->core) < 0)
100 continue;
101
102 while ((event = perf_mmap__read_event(&md->core)) != NULL) {
103 const u32 type = event->header.type;
104 int tp_flags;
105 struct perf_sample sample;
106
107 ++nr_events;
108
109 if (type != PERF_RECORD_SAMPLE) {
110 perf_mmap__consume(&md->core);
111 continue;
112 }
113
114 err = evsel__parse_sample(evsel, event, &sample);
115 if (err) {
116 pr_debug("Can't parse sample, err = %d\n", err);
117 goto out_delete_evlist;
118 }
119
120 tp_flags = evsel__intval(evsel, &sample, "flags");
121
122 if (flags != tp_flags) {
123 pr_debug("%s: Expected flags=%#x, got %#x\n",
124 __func__, flags, tp_flags);
125 goto out_delete_evlist;
126 }
127
128 goto out_ok;
129 }
130 perf_mmap__read_done(&md->core);
131 }
132
133 if (nr_events == before)
134 evlist__poll(evlist, 10);
135
136 if (++nr_polls > 5) {
137 pr_debug("%s: no events!\n", __func__);
138 goto out_delete_evlist;
139 }
140 }
141out_ok:
142 ret = TEST_OK;
143out_delete_evlist:
144 evlist__delete(evlist);
145out:
146 return ret;
147}
148
149static struct test_case tests__syscall_openat_tp_fields[] = {
150 TEST_CASE_REASON("syscalls:sys_enter_openat event fields",
151 syscall_openat_tp_fields,
152 "permissions"),
153 { .name = NULL, }
154};
155
156struct test_suite suite__syscall_openat_tp_fields = {
157 .desc = "syscalls:sys_enter_openat event fields",
158 .test_cases = tests__syscall_openat_tp_fields,
159};