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144 lines
3.0 KiB
144 lines
3.0 KiB
// SPDX-License-Identifier: GPL-2.0 |
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#include <stdbool.h> |
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#include <linux/err.h> |
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#include <linux/string.h> |
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#include <sys/types.h> |
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#include <sys/stat.h> |
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#include <fcntl.h> |
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#include "evlist.h" |
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#include "evsel.h" |
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#include "thread_map.h" |
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#include "record.h" |
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#include "tests.h" |
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#include "debug.h" |
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#include "util/mmap.h" |
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#include <errno.h> |
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#include <perf/mmap.h> |
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#ifndef O_DIRECTORY |
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#define O_DIRECTORY 00200000 |
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#endif |
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#ifndef AT_FDCWD |
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#define AT_FDCWD -100 |
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#endif |
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int test__syscall_openat_tp_fields(struct test *test __maybe_unused, int subtest __maybe_unused) |
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{ |
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struct record_opts opts = { |
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.target = { |
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.uid = UINT_MAX, |
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.uses_mmap = true, |
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}, |
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.no_buffering = true, |
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.freq = 1, |
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.mmap_pages = 256, |
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.raw_samples = true, |
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}; |
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const char *filename = "/etc/passwd"; |
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int flags = O_RDONLY | O_DIRECTORY; |
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struct evlist *evlist = evlist__new(); |
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struct evsel *evsel; |
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int err = -1, i, nr_events = 0, nr_polls = 0; |
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char sbuf[STRERR_BUFSIZE]; |
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if (evlist == NULL) { |
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pr_debug("%s: evlist__new\n", __func__); |
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goto out; |
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} |
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evsel = evsel__newtp("syscalls", "sys_enter_openat"); |
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if (IS_ERR(evsel)) { |
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pr_debug("%s: evsel__newtp\n", __func__); |
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goto out_delete_evlist; |
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} |
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evlist__add(evlist, evsel); |
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err = evlist__create_maps(evlist, &opts.target); |
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if (err < 0) { |
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pr_debug("%s: evlist__create_maps\n", __func__); |
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goto out_delete_evlist; |
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} |
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evsel__config(evsel, &opts, NULL); |
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perf_thread_map__set_pid(evlist->core.threads, 0, getpid()); |
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err = evlist__open(evlist); |
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if (err < 0) { |
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pr_debug("perf_evlist__open: %s\n", |
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str_error_r(errno, sbuf, sizeof(sbuf))); |
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goto out_delete_evlist; |
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} |
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err = evlist__mmap(evlist, UINT_MAX); |
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if (err < 0) { |
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pr_debug("evlist__mmap: %s\n", |
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str_error_r(errno, sbuf, sizeof(sbuf))); |
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goto out_delete_evlist; |
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} |
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evlist__enable(evlist); |
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/* |
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* Generate the event: |
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*/ |
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openat(AT_FDCWD, filename, flags); |
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while (1) { |
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int before = nr_events; |
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for (i = 0; i < evlist->core.nr_mmaps; i++) { |
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union perf_event *event; |
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struct mmap *md; |
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md = &evlist->mmap[i]; |
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if (perf_mmap__read_init(&md->core) < 0) |
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continue; |
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while ((event = perf_mmap__read_event(&md->core)) != NULL) { |
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const u32 type = event->header.type; |
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int tp_flags; |
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struct perf_sample sample; |
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++nr_events; |
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if (type != PERF_RECORD_SAMPLE) { |
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perf_mmap__consume(&md->core); |
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continue; |
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} |
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err = evsel__parse_sample(evsel, event, &sample); |
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if (err) { |
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pr_debug("Can't parse sample, err = %d\n", err); |
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goto out_delete_evlist; |
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} |
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tp_flags = evsel__intval(evsel, &sample, "flags"); |
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if (flags != tp_flags) { |
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pr_debug("%s: Expected flags=%#x, got %#x\n", |
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__func__, flags, tp_flags); |
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goto out_delete_evlist; |
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} |
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goto out_ok; |
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} |
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perf_mmap__read_done(&md->core); |
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} |
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if (nr_events == before) |
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evlist__poll(evlist, 10); |
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if (++nr_polls > 5) { |
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pr_debug("%s: no events!\n", __func__); |
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goto out_delete_evlist; |
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} |
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} |
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out_ok: |
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err = 0; |
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out_delete_evlist: |
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evlist__delete(evlist); |
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out: |
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return err; |
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}
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