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 8 int test__syscall_openat_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_openat"); 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 thread_map__set_pid(evlist->threads, 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 openat(AT_FDCWD, 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 } 115 out_ok: 116 err = 0; 117 out_delete_evlist: 118 perf_evlist__delete(evlist); 119 out: 120 return err; 121 } 122