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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
17#ifndef O_DIRECTORY
18#define O_DIRECTORY 00200000
19#endif
20#ifndef AT_FDCWD
21#define AT_FDCWD -100
22#endif
23
24int test__syscall_openat_tp_fields(struct test *test __maybe_unused, int subtest __maybe_unused)
25{
26 struct record_opts opts = {
27 .target = {
28 .uid = UINT_MAX,
29 .uses_mmap = true,
30 },
31 .no_buffering = true,
32 .freq = 1,
33 .mmap_pages = 256,
34 .raw_samples = true,
35 };
36 const char *filename = "/etc/passwd";
37 int flags = O_RDONLY | O_DIRECTORY;
38 struct evlist *evlist = evlist__new();
39 struct evsel *evsel;
40 int err = -1, i, nr_events = 0, nr_polls = 0;
41 char sbuf[STRERR_BUFSIZE];
42
43 if (evlist == NULL) {
44 pr_debug("%s: perf_evlist__new\n", __func__);
45 goto out;
46 }
47
48 evsel = perf_evsel__newtp("syscalls", "sys_enter_openat");
49 if (IS_ERR(evsel)) {
50 pr_debug("%s: perf_evsel__newtp\n", __func__);
51 goto out_delete_evlist;
52 }
53
54 evlist__add(evlist, evsel);
55
56 err = perf_evlist__create_maps(evlist, &opts.target);
57 if (err < 0) {
58 pr_debug("%s: perf_evlist__create_maps\n", __func__);
59 goto out_delete_evlist;
60 }
61
62 perf_evsel__config(evsel, &opts, NULL);
63
64 perf_thread_map__set_pid(evlist->core.threads, 0, getpid());
65
66 err = evlist__open(evlist);
67 if (err < 0) {
68 pr_debug("perf_evlist__open: %s\n",
69 str_error_r(errno, sbuf, sizeof(sbuf)));
70 goto out_delete_evlist;
71 }
72
73 err = evlist__mmap(evlist, UINT_MAX);
74 if (err < 0) {
75 pr_debug("evlist__mmap: %s\n",
76 str_error_r(errno, sbuf, sizeof(sbuf)));
77 goto out_delete_evlist;
78 }
79
80 evlist__enable(evlist);
81
82 /*
83 * Generate the event:
84 */
85 openat(AT_FDCWD, filename, flags);
86
87 while (1) {
88 int before = nr_events;
89
90 for (i = 0; i < evlist->core.nr_mmaps; i++) {
91 union perf_event *event;
92 struct mmap *md;
93
94 md = &evlist->mmap[i];
95 if (perf_mmap__read_init(md) < 0)
96 continue;
97
98 while ((event = perf_mmap__read_event(md)) != NULL) {
99 const u32 type = event->header.type;
100 int tp_flags;
101 struct perf_sample sample;
102
103 ++nr_events;
104
105 if (type != PERF_RECORD_SAMPLE) {
106 perf_mmap__consume(md);
107 continue;
108 }
109
110 err = perf_evsel__parse_sample(evsel, event, &sample);
111 if (err) {
112 pr_debug("Can't parse sample, err = %d\n", err);
113 goto out_delete_evlist;
114 }
115
116 tp_flags = perf_evsel__intval(evsel, &sample, "flags");
117
118 if (flags != tp_flags) {
119 pr_debug("%s: Expected flags=%#x, got %#x\n",
120 __func__, flags, tp_flags);
121 goto out_delete_evlist;
122 }
123
124 goto out_ok;
125 }
126 perf_mmap__read_done(md);
127 }
128
129 if (nr_events == before)
130 evlist__poll(evlist, 10);
131
132 if (++nr_polls > 5) {
133 pr_debug("%s: no events!\n", __func__);
134 goto out_delete_evlist;
135 }
136 }
137out_ok:
138 err = 0;
139out_delete_evlist:
140 evlist__delete(evlist);
141out:
142 return err;
143}
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};