[thirdparty/systemd.git] / src / libsystemd / sd-event / test-event.c

/* SPDX-License-Identifier: LGPL-2.1+ */

#include <sys/wait.h>

#include "sd-event.h"

#include "alloc-util.h"
#include "fd-util.h"
#include "fs-util.h"
#include "log.h"
#include "macro.h"
#include "parse-util.h"
#include "process-util.h"
#include "rm-rf.h"
#include "signal-util.h"
#include "stdio-util.h"
#include "string-util.h"
#include "tests.h"
#include "tmpfile-util.h"
#include "util.h"

static int prepare_handler(sd_event_source *s, void *userdata) {
        log_info("preparing %c", PTR_TO_INT(userdata));
        return 1;
}

static bool got_a, got_b, got_c, got_unref;
static unsigned got_d;

static int unref_handler(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
        sd_event_source_unref(s);
        got_unref = true;
        return 0;
}

static int io_handler(sd_event_source *s, int fd, uint32_t revents, void *userdata) {

        log_info("got IO on %c", PTR_TO_INT(userdata));

        if (userdata == INT_TO_PTR('a')) {
                assert_se(sd_event_source_set_enabled(s, SD_EVENT_OFF) >= 0);
                assert_se(!got_a);
                got_a = true;
        } else if (userdata == INT_TO_PTR('b')) {
                assert_se(!got_b);
                got_b = true;
        } else if (userdata == INT_TO_PTR('d')) {
                got_d++;
                if (got_d < 2)
                        assert_se(sd_event_source_set_enabled(s, SD_EVENT_ONESHOT) >= 0);
                else
                        assert_se(sd_event_source_set_enabled(s, SD_EVENT_OFF) >= 0);
        } else
                assert_not_reached("Yuck!");

        return 1;
}

static int child_handler(sd_event_source *s, const siginfo_t *si, void *userdata) {

        assert_se(s);
        assert_se(si);

        log_info("got child on %c", PTR_TO_INT(userdata));

        assert_se(userdata == INT_TO_PTR('f'));

        assert_se(sd_event_exit(sd_event_source_get_event(s), 0) >= 0);
        sd_event_source_unref(s);

        return 1;
}

static int signal_handler(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) {
        sd_event_source *p = NULL;
        pid_t pid;

        assert_se(s);
        assert_se(si);

        log_info("got signal on %c", PTR_TO_INT(userdata));

        assert_se(userdata == INT_TO_PTR('e'));

        assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGCHLD, -1) >= 0);

        pid = fork();
        assert_se(pid >= 0);

        if (pid == 0)
                _exit(EXIT_SUCCESS);

        assert_se(sd_event_add_child(sd_event_source_get_event(s), &p, pid, WEXITED, child_handler, INT_TO_PTR('f')) >= 0);
        assert_se(sd_event_source_set_enabled(p, SD_EVENT_ONESHOT) >= 0);

        sd_event_source_unref(s);

        return 1;
}

static int defer_handler(sd_event_source *s, void *userdata) {
        sd_event_source *p = NULL;

        assert_se(s);

        log_info("got defer on %c", PTR_TO_INT(userdata));

        assert_se(userdata == INT_TO_PTR('d'));

        assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGUSR1, -1) >= 0);

        assert_se(sd_event_add_signal(sd_event_source_get_event(s), &p, SIGUSR1, signal_handler, INT_TO_PTR('e')) >= 0);
        assert_se(sd_event_source_set_enabled(p, SD_EVENT_ONESHOT) >= 0);
        raise(SIGUSR1);

        sd_event_source_unref(s);

        return 1;
}

static bool do_quit = false;

static int time_handler(sd_event_source *s, uint64_t usec, void *userdata) {
        log_info("got timer on %c", PTR_TO_INT(userdata));

        if (userdata == INT_TO_PTR('c')) {

                if (do_quit) {
                        sd_event_source *p;

                        assert_se(sd_event_add_defer(sd_event_source_get_event(s), &p, defer_handler, INT_TO_PTR('d')) >= 0);
                        assert_se(sd_event_source_set_enabled(p, SD_EVENT_ONESHOT) >= 0);
                } else {
                        assert_se(!got_c);
                        got_c = true;
                }
        } else
                assert_not_reached("Huh?");

        return 2;
}

static bool got_exit = false;

static int exit_handler(sd_event_source *s, void *userdata) {
        log_info("got quit handler on %c", PTR_TO_INT(userdata));

        got_exit = true;

        return 3;
}

static bool got_post = false;

static int post_handler(sd_event_source *s, void *userdata) {
        log_info("got post handler");

        got_post = true;

        return 2;
}

static void test_basic(void) {
        sd_event *e = NULL;
        sd_event_source *w = NULL, *x = NULL, *y = NULL, *z = NULL, *q = NULL, *t = NULL;
        static const char ch = 'x';
        int a[2] = { -1, -1 }, b[2] = { -1, -1}, d[2] = { -1, -1}, k[2] = { -1, -1 };
        uint64_t event_now;
        int64_t priority;

        assert_se(pipe(a) >= 0);
        assert_se(pipe(b) >= 0);
        assert_se(pipe(d) >= 0);
        assert_se(pipe(k) >= 0);

        assert_se(sd_event_default(&e) >= 0);
        assert_se(sd_event_now(e, CLOCK_MONOTONIC, &event_now) > 0);

        assert_se(sd_event_set_watchdog(e, true) >= 0);

        /* Test whether we cleanly can destroy an io event source from its own handler */
        got_unref = false;
        assert_se(sd_event_add_io(e, &t, k[0], EPOLLIN, unref_handler, NULL) >= 0);
        assert_se(write(k[1], &ch, 1) == 1);
        assert_se(sd_event_run(e, (uint64_t) -1) >= 1);
        assert_se(got_unref);

        got_a = false, got_b = false, got_c = false, got_d = 0;

        /* Add a oneshot handler, trigger it, reenable it, and trigger
         * it again. */
        assert_se(sd_event_add_io(e, &w, d[0], EPOLLIN, io_handler, INT_TO_PTR('d')) >= 0);
        assert_se(sd_event_source_set_enabled(w, SD_EVENT_ONESHOT) >= 0);
        assert_se(write(d[1], &ch, 1) >= 0);
        assert_se(sd_event_run(e, (uint64_t) -1) >= 1);
        assert_se(got_d == 1);
        assert_se(write(d[1], &ch, 1) >= 0);
        assert_se(sd_event_run(e, (uint64_t) -1) >= 1);
        assert_se(got_d == 2);

        assert_se(sd_event_add_io(e, &x, a[0], EPOLLIN, io_handler, INT_TO_PTR('a')) >= 0);
        assert_se(sd_event_add_io(e, &y, b[0], EPOLLIN, io_handler, INT_TO_PTR('b')) >= 0);
        assert_se(sd_event_add_time(e, &z, CLOCK_MONOTONIC, 0, 0, time_handler, INT_TO_PTR('c')) >= 0);
        assert_se(sd_event_add_exit(e, &q, exit_handler, INT_TO_PTR('g')) >= 0);

        assert_se(sd_event_source_set_priority(x, 99) >= 0);
        assert_se(sd_event_source_get_priority(x, &priority) >= 0);
        assert_se(priority == 99);
        assert_se(sd_event_source_set_enabled(y, SD_EVENT_ONESHOT) >= 0);
        assert_se(sd_event_source_set_prepare(x, prepare_handler) >= 0);
        assert_se(sd_event_source_set_priority(z, 50) >= 0);
        assert_se(sd_event_source_set_enabled(z, SD_EVENT_ONESHOT) >= 0);
        assert_se(sd_event_source_set_prepare(z, prepare_handler) >= 0);

        /* Test for floating event sources */
        assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGRTMIN+1, -1) >= 0);
        assert_se(sd_event_add_signal(e, NULL, SIGRTMIN+1, NULL, NULL) >= 0);

        assert_se(write(a[1], &ch, 1) >= 0);
        assert_se(write(b[1], &ch, 1) >= 0);

        assert_se(!got_a && !got_b && !got_c);

        assert_se(sd_event_run(e, (uint64_t) -1) >= 1);

        assert_se(!got_a && got_b && !got_c);

        assert_se(sd_event_run(e, (uint64_t) -1) >= 1);

        assert_se(!got_a && got_b && got_c);

        assert_se(sd_event_run(e, (uint64_t) -1) >= 1);

        assert_se(got_a && got_b && got_c);

        sd_event_source_unref(x);
        sd_event_source_unref(y);

        do_quit = true;
        assert_se(sd_event_add_post(e, NULL, post_handler, NULL) >= 0);
        assert_se(sd_event_now(e, CLOCK_MONOTONIC, &event_now) == 0);
        assert_se(sd_event_source_set_time(z, event_now + 200 * USEC_PER_MSEC) >= 0);
        assert_se(sd_event_source_set_enabled(z, SD_EVENT_ONESHOT) >= 0);

        assert_se(sd_event_loop(e) >= 0);
        assert_se(got_post);
        assert_se(got_exit);

        sd_event_source_unref(z);
        sd_event_source_unref(q);

        sd_event_source_unref(w);

        sd_event_unref(e);

        safe_close_pair(a);
        safe_close_pair(b);
        safe_close_pair(d);
        safe_close_pair(k);
}

static void test_sd_event_now(void) {
        _cleanup_(sd_event_unrefp) sd_event *e = NULL;
        uint64_t event_now;

        assert_se(sd_event_new(&e) >= 0);
        assert_se(sd_event_now(e, CLOCK_MONOTONIC, &event_now) > 0);
        assert_se(sd_event_now(e, CLOCK_REALTIME, &event_now) > 0);
        assert_se(sd_event_now(e, CLOCK_REALTIME_ALARM, &event_now) > 0);
        if (clock_boottime_supported()) {
                assert_se(sd_event_now(e, CLOCK_BOOTTIME, &event_now) > 0);
                assert_se(sd_event_now(e, CLOCK_BOOTTIME_ALARM, &event_now) > 0);
        }
        assert_se(sd_event_now(e, -1, &event_now) == -EOPNOTSUPP);
        assert_se(sd_event_now(e, 900 /* arbitrary big number */, &event_now) == -EOPNOTSUPP);

        assert_se(sd_event_run(e, 0) == 0);

        assert_se(sd_event_now(e, CLOCK_MONOTONIC, &event_now) == 0);
        assert_se(sd_event_now(e, CLOCK_REALTIME, &event_now) == 0);
        assert_se(sd_event_now(e, CLOCK_REALTIME_ALARM, &event_now) == 0);
        if (clock_boottime_supported()) {
                assert_se(sd_event_now(e, CLOCK_BOOTTIME, &event_now) == 0);
                assert_se(sd_event_now(e, CLOCK_BOOTTIME_ALARM, &event_now) == 0);
        }
        assert_se(sd_event_now(e, -1, &event_now) == -EOPNOTSUPP);
        assert_se(sd_event_now(e, 900 /* arbitrary big number */, &event_now) == -EOPNOTSUPP);
}

static int last_rtqueue_sigval = 0;
static int n_rtqueue = 0;

static int rtqueue_handler(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) {
        last_rtqueue_sigval = si->ssi_int;
        n_rtqueue++;
        return 0;
}

static void test_rtqueue(void) {
        sd_event_source *u = NULL, *v = NULL, *s = NULL;
        sd_event *e = NULL;

        assert_se(sd_event_default(&e) >= 0);

        assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGRTMIN+2, SIGRTMIN+3, SIGUSR2, -1) >= 0);
        assert_se(sd_event_add_signal(e, &u, SIGRTMIN+2, rtqueue_handler, NULL) >= 0);
        assert_se(sd_event_add_signal(e, &v, SIGRTMIN+3, rtqueue_handler, NULL) >= 0);
        assert_se(sd_event_add_signal(e, &s, SIGUSR2, rtqueue_handler, NULL) >= 0);

        assert_se(sd_event_source_set_priority(v, -10) >= 0);

        assert_se(sigqueue(getpid_cached(), SIGRTMIN+2, (union sigval) { .sival_int = 1 }) >= 0);
        assert_se(sigqueue(getpid_cached(), SIGRTMIN+3, (union sigval) { .sival_int = 2 }) >= 0);
        assert_se(sigqueue(getpid_cached(), SIGUSR2, (union sigval) { .sival_int = 3 }) >= 0);
        assert_se(sigqueue(getpid_cached(), SIGRTMIN+3, (union sigval) { .sival_int = 4 }) >= 0);
        assert_se(sigqueue(getpid_cached(), SIGUSR2, (union sigval) { .sival_int = 5 }) >= 0);

        assert_se(n_rtqueue == 0);
        assert_se(last_rtqueue_sigval == 0);

        assert_se(sd_event_run(e, (uint64_t) -1) >= 1);
        assert_se(n_rtqueue == 1);
        assert_se(last_rtqueue_sigval == 2); /* first SIGRTMIN+3 */

        assert_se(sd_event_run(e, (uint64_t) -1) >= 1);
        assert_se(n_rtqueue == 2);
        assert_se(last_rtqueue_sigval == 4); /* second SIGRTMIN+3 */

        assert_se(sd_event_run(e, (uint64_t) -1) >= 1);
        assert_se(n_rtqueue == 3);
        assert_se(last_rtqueue_sigval == 3); /* first SIGUSR2 */

        assert_se(sd_event_run(e, (uint64_t) -1) >= 1);
        assert_se(n_rtqueue == 4);
        assert_se(last_rtqueue_sigval == 1); /* SIGRTMIN+2 */

        assert_se(sd_event_run(e, 0) == 0); /* the other SIGUSR2 is dropped, because the first one was still queued */
        assert_se(n_rtqueue == 4);
        assert_se(last_rtqueue_sigval == 1);

        sd_event_source_unref(u);
        sd_event_source_unref(v);
        sd_event_source_unref(s);

        sd_event_unref(e);
}

#define CREATE_EVENTS_MAX (70000U)

struct inotify_context {
        bool delete_self_handler_called;
        unsigned create_called[CREATE_EVENTS_MAX];
        unsigned create_overflow;
        unsigned n_create_events;
};

static void maybe_exit(sd_event_source *s, struct inotify_context *c) {
        unsigned n;

        assert(s);
        assert(c);

        if (!c->delete_self_handler_called)
                return;

        for (n = 0; n < 3; n++) {
                unsigned i;

                if (c->create_overflow & (1U << n))
                        continue;

                for (i = 0; i < c->n_create_events; i++)
                        if (!(c->create_called[i] & (1U << n)))
                                return;
        }

        sd_event_exit(sd_event_source_get_event(s), 0);
}

static int inotify_handler(sd_event_source *s, const struct inotify_event *ev, void *userdata) {
        struct inotify_context *c = userdata;
        const char *description;
        unsigned bit, n;

        assert_se(sd_event_source_get_description(s, &description) >= 0);
        assert_se(safe_atou(description, &n) >= 0);

        assert_se(n <= 3);
        bit = 1U << n;

        if (ev->mask & IN_Q_OVERFLOW) {
                log_info("inotify-handler <%s>: overflow", description);
                c->create_overflow |= bit;
        } else if (ev->mask & IN_CREATE) {
                unsigned i;

                log_info("inotify-handler <%s>: create on %s", description, ev->name);

                if (!streq(ev->name, "sub")) {
                        assert_se(safe_atou(ev->name, &i) >= 0);

                        assert_se(i < c->n_create_events);
                        c->create_called[i] |= bit;
                }
        } else if (ev->mask & IN_DELETE) {
                log_info("inotify-handler <%s>: delete of %s", description, ev->name);
                assert_se(streq(ev->name, "sub"));
        } else
                assert_not_reached("unexpected inotify event");

        maybe_exit(s, c);
        return 1;
}

static int delete_self_handler(sd_event_source *s, const struct inotify_event *ev, void *userdata) {
        struct inotify_context *c = userdata;

        if (ev->mask & IN_Q_OVERFLOW) {
                log_info("delete-self-handler: overflow");
                c->delete_self_handler_called = true;
        } else if (ev->mask & IN_DELETE_SELF) {
                log_info("delete-self-handler: delete-self");
                c->delete_self_handler_called = true;
        } else if (ev->mask & IN_IGNORED) {
                log_info("delete-self-handler: ignore");
        } else
                assert_not_reached("unexpected inotify event (delete-self)");

        maybe_exit(s, c);
        return 1;
}

static void test_inotify(unsigned n_create_events) {
        _cleanup_(rm_rf_physical_and_freep) char *p = NULL;
        sd_event_source *a = NULL, *b = NULL, *c = NULL, *d = NULL;
        struct inotify_context context = {
                .n_create_events = n_create_events,
        };
        sd_event *e = NULL;
        const char *q;
        unsigned i;

        assert_se(sd_event_default(&e) >= 0);

        assert_se(mkdtemp_malloc("/tmp/test-inotify-XXXXXX", &p) >= 0);

        assert_se(sd_event_add_inotify(e, &a, p, IN_CREATE|IN_ONLYDIR, inotify_handler, &context) >= 0);
        assert_se(sd_event_add_inotify(e, &b, p, IN_CREATE|IN_DELETE|IN_DONT_FOLLOW, inotify_handler, &context) >= 0);
        assert_se(sd_event_source_set_priority(b, SD_EVENT_PRIORITY_IDLE) >= 0);
        assert_se(sd_event_source_set_priority(b, SD_EVENT_PRIORITY_NORMAL) >= 0);
        assert_se(sd_event_add_inotify(e, &c, p, IN_CREATE|IN_DELETE|IN_EXCL_UNLINK, inotify_handler, &context) >= 0);
        assert_se(sd_event_source_set_priority(c, SD_EVENT_PRIORITY_IDLE) >= 0);

        assert_se(sd_event_source_set_description(a, "0") >= 0);
        assert_se(sd_event_source_set_description(b, "1") >= 0);
        assert_se(sd_event_source_set_description(c, "2") >= 0);

        q = strjoina(p, "/sub");
        assert_se(touch(q) >= 0);
        assert_se(sd_event_add_inotify(e, &d, q, IN_DELETE_SELF, delete_self_handler, &context) >= 0);

        for (i = 0; i < n_create_events; i++) {
                char buf[DECIMAL_STR_MAX(unsigned)+1];
                _cleanup_free_ char *z;

                xsprintf(buf, "%u", i);
                assert_se(z = strjoin(p, "/", buf));

                assert_se(touch(z) >= 0);
        }

        assert_se(unlink(q) >= 0);

        assert_se(sd_event_loop(e) >= 0);

        sd_event_source_unref(a);
        sd_event_source_unref(b);
        sd_event_source_unref(c);
        sd_event_source_unref(d);

        sd_event_unref(e);
}

int main(int argc, char *argv[]) {
        test_setup_logging(LOG_DEBUG);

        test_basic();
        test_sd_event_now();
        test_rtqueue();

        test_inotify(100); /* should work without overflow */
        test_inotify(33000); /* should trigger a q overflow */

        return 0;
}
Commit	Line	Data
53e1b683	1	/* SPDX-License-Identifier: LGPL-2.1+ */
fd38203a	2
fe993888 MS	3	#include <sys/wait.h>
fe993888 MS	4
fd38203a	5	#include "sd-event.h"
3ffd4af2	6
41e09d62	7	#include "alloc-util.h"
3ffd4af2	8	#include "fd-util.h"
41e09d62	9	#include "fs-util.h"
fd38203a	10	#include "log.h"
0c0cdb06	11	#include "macro.h"
41e09d62 LP	12	#include "parse-util.h"
	13	#include "process-util.h"
	14	#include "rm-rf.h"
24882e06	15	#include "signal-util.h"
41e09d62 LP	16	#include "stdio-util.h"
41e09d62 LP	17	#include "string-util.h"
6d7c4033	18	#include "tests.h"
e4de7287	19	#include "tmpfile-util.h"
3ffd4af2	20	#include "util.h"
fd38203a LP	21
	22	static int prepare_handler(sd_event_source s, void userdata) {
	23	log_info("preparing %c", PTR_TO_INT(userdata));
	24	return 1;
	25	}
	26
12179984	27	static bool got_a, got_b, got_c, got_unref;
9ec9694c	28	static unsigned got_d;
fd38203a	29
12179984 LP	30	static int unref_handler(sd_event_source s, int fd, uint32_t revents, void userdata) {
	31	sd_event_source_unref(s);
	32	got_unref = true;
	33	return 0;
	34	}
	35
fd38203a LP	36	static int io_handler(sd_event_source s, int fd, uint32_t revents, void userdata) {
	37
	38	log_info("got IO on %c", PTR_TO_INT(userdata));
	39
	40	if (userdata == INT_TO_PTR('a')) {
baf76283	41	assert_se(sd_event_source_set_enabled(s, SD_EVENT_OFF) >= 0);
fd38203a LP	42	assert_se(!got_a);
	43	got_a = true;
	44	} else if (userdata == INT_TO_PTR('b')) {
	45	assert_se(!got_b);
	46	got_b = true;
9ec9694c DS	47	} else if (userdata == INT_TO_PTR('d')) {
	48	got_d++;
	49	if (got_d < 2)
	50	assert_se(sd_event_source_set_enabled(s, SD_EVENT_ONESHOT) >= 0);
	51	else
	52	assert_se(sd_event_source_set_enabled(s, SD_EVENT_OFF) >= 0);
fd38203a LP	53	} else
	54	assert_not_reached("Yuck!");
	55
	56	return 1;
	57	}
	58
	59	static int child_handler(sd_event_source s, const siginfo_t si, void *userdata) {
	60
0c0cdb06 RC	61	assert_se(s);
0c0cdb06 RC	62	assert_se(si);
fd38203a LP	63
	64	log_info("got child on %c", PTR_TO_INT(userdata));
	65
0c0cdb06	66	assert_se(userdata == INT_TO_PTR('f'));
fd38203a	67
6203e07a	68	assert_se(sd_event_exit(sd_event_source_get_event(s), 0) >= 0);
fd38203a LP	69	sd_event_source_unref(s);
	70
	71	return 1;
	72	}
	73
	74	static int signal_handler(sd_event_source s, const struct signalfd_siginfo si, void *userdata) {
39883f62	75	sd_event_source *p = NULL;
fd38203a LP	76	pid_t pid;
fd38203a LP	77
0c0cdb06 RC	78	assert_se(s);
0c0cdb06 RC	79	assert_se(si);
fd38203a LP	80
	81	log_info("got signal on %c", PTR_TO_INT(userdata));
	82
0c0cdb06	83	assert_se(userdata == INT_TO_PTR('e'));
fd38203a	84
72c0a2c2	85	assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGCHLD, -1) >= 0);
fd38203a LP	86
	87	pid = fork();
	88	assert_se(pid >= 0);
	89
	90	if (pid == 0)
a45d7127	91	_exit(EXIT_SUCCESS);
fd38203a	92
151b9b96	93	assert_se(sd_event_add_child(sd_event_source_get_event(s), &p, pid, WEXITED, child_handler, INT_TO_PTR('f')) >= 0);
baf76283	94	assert_se(sd_event_source_set_enabled(p, SD_EVENT_ONESHOT) >= 0);
fd38203a LP	95
	96	sd_event_source_unref(s);
	97
	98	return 1;
	99	}
	100
	101	static int defer_handler(sd_event_source s, void userdata) {
39883f62	102	sd_event_source *p = NULL;
fd38203a	103
0c0cdb06	104	assert_se(s);
fd38203a LP	105
	106	log_info("got defer on %c", PTR_TO_INT(userdata));
	107
0c0cdb06	108	assert_se(userdata == INT_TO_PTR('d'));
fd38203a	109
72c0a2c2 LP	110	assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGUSR1, -1) >= 0);
72c0a2c2 LP	111
151b9b96	112	assert_se(sd_event_add_signal(sd_event_source_get_event(s), &p, SIGUSR1, signal_handler, INT_TO_PTR('e')) >= 0);
baf76283	113	assert_se(sd_event_source_set_enabled(p, SD_EVENT_ONESHOT) >= 0);
fd38203a LP	114	raise(SIGUSR1);
	115
	116	sd_event_source_unref(s);
	117
	118	return 1;
	119	}
	120
	121	static bool do_quit = false;
	122
	123	static int time_handler(sd_event_source s, uint64_t usec, void userdata) {
	124	log_info("got timer on %c", PTR_TO_INT(userdata));
	125
	126	if (userdata == INT_TO_PTR('c')) {
	127
	128	if (do_quit) {
	129	sd_event_source *p;
	130
151b9b96	131	assert_se(sd_event_add_defer(sd_event_source_get_event(s), &p, defer_handler, INT_TO_PTR('d')) >= 0);
baf76283	132	assert_se(sd_event_source_set_enabled(p, SD_EVENT_ONESHOT) >= 0);
fd38203a	133	} else {
0c0cdb06	134	assert_se(!got_c);
fd38203a LP	135	got_c = true;
	136	}
	137	} else
	138	assert_not_reached("Huh?");
	139
	140	return 2;
	141	}
	142
6203e07a	143	static bool got_exit = false;
da7e457c	144
6203e07a	145	static int exit_handler(sd_event_source s, void userdata) {
da7e457c LP	146	log_info("got quit handler on %c", PTR_TO_INT(userdata));
da7e457c LP	147
6203e07a	148	got_exit = true;
da7e457c LP	149
	150	return 3;
	151	}
	152
509a07ad EV	153	static bool got_post = false;
	154
	155	static int post_handler(sd_event_source s, void userdata) {
	156	log_info("got post handler");
	157
	158	got_post = true;
	159
	160	return 2;
	161	}
	162
9da4cb2b	163	static void test_basic(void) {
fd38203a	164	sd_event *e = NULL;
12179984	165	sd_event_source w = NULL, x = NULL, y = NULL, z = NULL, q = NULL, t = NULL;
fd38203a	166	static const char ch = 'x';
12179984	167	int a[2] = { -1, -1 }, b[2] = { -1, -1}, d[2] = { -1, -1}, k[2] = { -1, -1 };
591df2b5	168	uint64_t event_now;
6680b8d1	169	int64_t priority;
fd38203a LP	170
	171	assert_se(pipe(a) >= 0);
	172	assert_se(pipe(b) >= 0);
9ec9694c	173	assert_se(pipe(d) >= 0);
12179984	174	assert_se(pipe(k) >= 0);
fd38203a	175
afc6adb5	176	assert_se(sd_event_default(&e) >= 0);
591df2b5	177	assert_se(sd_event_now(e, CLOCK_MONOTONIC, &event_now) > 0);
fd38203a	178
cde93897 LP	179	assert_se(sd_event_set_watchdog(e, true) >= 0);
cde93897 LP	180
12179984 LP	181	/* Test whether we cleanly can destroy an io event source from its own handler */
12179984 LP	182	got_unref = false;
151b9b96	183	assert_se(sd_event_add_io(e, &t, k[0], EPOLLIN, unref_handler, NULL) >= 0);
12179984 LP	184	assert_se(write(k[1], &ch, 1) == 1);
	185	assert_se(sd_event_run(e, (uint64_t) -1) >= 1);
	186	assert_se(got_unref);
	187
9ec9694c DS	188	got_a = false, got_b = false, got_c = false, got_d = 0;
9ec9694c DS	189
3fe91079	190	/* Add a oneshot handler, trigger it, reenable it, and trigger
9ec9694c	191	* it again. */
151b9b96	192	assert_se(sd_event_add_io(e, &w, d[0], EPOLLIN, io_handler, INT_TO_PTR('d')) >= 0);
9ec9694c DS	193	assert_se(sd_event_source_set_enabled(w, SD_EVENT_ONESHOT) >= 0);
	194	assert_se(write(d[1], &ch, 1) >= 0);
	195	assert_se(sd_event_run(e, (uint64_t) -1) >= 1);
	196	assert_se(got_d == 1);
	197	assert_se(write(d[1], &ch, 1) >= 0);
	198	assert_se(sd_event_run(e, (uint64_t) -1) >= 1);
	199	assert_se(got_d == 2);
fd38203a	200
151b9b96 LP	201	assert_se(sd_event_add_io(e, &x, a[0], EPOLLIN, io_handler, INT_TO_PTR('a')) >= 0);
151b9b96 LP	202	assert_se(sd_event_add_io(e, &y, b[0], EPOLLIN, io_handler, INT_TO_PTR('b')) >= 0);
6a0f1f6d	203	assert_se(sd_event_add_time(e, &z, CLOCK_MONOTONIC, 0, 0, time_handler, INT_TO_PTR('c')) >= 0);
151b9b96	204	assert_se(sd_event_add_exit(e, &q, exit_handler, INT_TO_PTR('g')) >= 0);
fd38203a LP	205
fd38203a LP	206	assert_se(sd_event_source_set_priority(x, 99) >= 0);
6680b8d1 ME	207	assert_se(sd_event_source_get_priority(x, &priority) >= 0);
6680b8d1 ME	208	assert_se(priority == 99);
baf76283	209	assert_se(sd_event_source_set_enabled(y, SD_EVENT_ONESHOT) >= 0);
fd38203a LP	210	assert_se(sd_event_source_set_prepare(x, prepare_handler) >= 0);
fd38203a LP	211	assert_se(sd_event_source_set_priority(z, 50) >= 0);
baf76283	212	assert_se(sd_event_source_set_enabled(z, SD_EVENT_ONESHOT) >= 0);
fd38203a	213	assert_se(sd_event_source_set_prepare(z, prepare_handler) >= 0);
a71fe8b8 LP	214
a71fe8b8 LP	215	/* Test for floating event sources */
72c0a2c2	216	assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGRTMIN+1, -1) >= 0);
a71fe8b8	217	assert_se(sd_event_add_signal(e, NULL, SIGRTMIN+1, NULL, NULL) >= 0);
fd38203a LP	218
	219	assert_se(write(a[1], &ch, 1) >= 0);
	220	assert_se(write(b[1], &ch, 1) >= 0);
	221
	222	assert_se(!got_a && !got_b && !got_c);
	223
	224	assert_se(sd_event_run(e, (uint64_t) -1) >= 1);
	225
	226	assert_se(!got_a && got_b && !got_c);
	227
	228	assert_se(sd_event_run(e, (uint64_t) -1) >= 1);
	229
	230	assert_se(!got_a && got_b && got_c);
	231
	232	assert_se(sd_event_run(e, (uint64_t) -1) >= 1);
	233
	234	assert_se(got_a && got_b && got_c);
	235
	236	sd_event_source_unref(x);
	237	sd_event_source_unref(y);
	238
	239	do_quit = true;
509a07ad	240	assert_se(sd_event_add_post(e, NULL, post_handler, NULL) >= 0);
591df2b5 EV	241	assert_se(sd_event_now(e, CLOCK_MONOTONIC, &event_now) == 0);
591df2b5 EV	242	assert_se(sd_event_source_set_time(z, event_now + 200 * USEC_PER_MSEC) >= 0);
baf76283	243	assert_se(sd_event_source_set_enabled(z, SD_EVENT_ONESHOT) >= 0);
fd38203a LP	244
fd38203a LP	245	assert_se(sd_event_loop(e) >= 0);
509a07ad	246	assert_se(got_post);
5657c75f	247	assert_se(got_exit);
fd38203a LP	248
fd38203a LP	249	sd_event_source_unref(z);
da7e457c	250	sd_event_source_unref(q);
fd38203a	251
d5e4ec5b LP	252	sd_event_source_unref(w);
d5e4ec5b LP	253
fd38203a LP	254	sd_event_unref(e);
fd38203a LP	255
3d94f76c LP	256	safe_close_pair(a);
	257	safe_close_pair(b);
	258	safe_close_pair(d);
	259	safe_close_pair(k);
9da4cb2b LP	260	}
9da4cb2b LP	261
2c86ba5a ZJS	262	static void test_sd_event_now(void) {
	263	_cleanup_(sd_event_unrefp) sd_event *e = NULL;
	264	uint64_t event_now;
	265
	266	assert_se(sd_event_new(&e) >= 0);
	267	assert_se(sd_event_now(e, CLOCK_MONOTONIC, &event_now) > 0);
	268	assert_se(sd_event_now(e, CLOCK_REALTIME, &event_now) > 0);
	269	assert_se(sd_event_now(e, CLOCK_REALTIME_ALARM, &event_now) > 0);
3411372e LP	270	if (clock_boottime_supported()) {
	271	assert_se(sd_event_now(e, CLOCK_BOOTTIME, &event_now) > 0);
	272	assert_se(sd_event_now(e, CLOCK_BOOTTIME_ALARM, &event_now) > 0);
	273	}
2c86ba5a ZJS	274	assert_se(sd_event_now(e, -1, &event_now) == -EOPNOTSUPP);
	275	assert_se(sd_event_now(e, 900 /* arbitrary big number */, &event_now) == -EOPNOTSUPP);
	276
	277	assert_se(sd_event_run(e, 0) == 0);
	278
	279	assert_se(sd_event_now(e, CLOCK_MONOTONIC, &event_now) == 0);
	280	assert_se(sd_event_now(e, CLOCK_REALTIME, &event_now) == 0);
	281	assert_se(sd_event_now(e, CLOCK_REALTIME_ALARM, &event_now) == 0);
3411372e LP	282	if (clock_boottime_supported()) {
	283	assert_se(sd_event_now(e, CLOCK_BOOTTIME, &event_now) == 0);
	284	assert_se(sd_event_now(e, CLOCK_BOOTTIME_ALARM, &event_now) == 0);
	285	}
2c86ba5a ZJS	286	assert_se(sd_event_now(e, -1, &event_now) == -EOPNOTSUPP);
	287	assert_se(sd_event_now(e, 900 /* arbitrary big number */, &event_now) == -EOPNOTSUPP);
	288	}
	289
9da4cb2b LP	290	static int last_rtqueue_sigval = 0;
	291	static int n_rtqueue = 0;
	292
	293	static int rtqueue_handler(sd_event_source s, const struct signalfd_siginfo si, void *userdata) {
	294	last_rtqueue_sigval = si->ssi_int;
313cefa1	295	n_rtqueue++;
9da4cb2b LP	296	return 0;
	297	}
	298
	299	static void test_rtqueue(void) {
	300	sd_event_source u = NULL, v = NULL, *s = NULL;
	301	sd_event *e = NULL;
	302
	303	assert_se(sd_event_default(&e) >= 0);
	304
	305	assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGRTMIN+2, SIGRTMIN+3, SIGUSR2, -1) >= 0);
	306	assert_se(sd_event_add_signal(e, &u, SIGRTMIN+2, rtqueue_handler, NULL) >= 0);
	307	assert_se(sd_event_add_signal(e, &v, SIGRTMIN+3, rtqueue_handler, NULL) >= 0);
	308	assert_se(sd_event_add_signal(e, &s, SIGUSR2, rtqueue_handler, NULL) >= 0);
	309
	310	assert_se(sd_event_source_set_priority(v, -10) >= 0);
	311
19500112 YW	312	assert_se(sigqueue(getpid_cached(), SIGRTMIN+2, (union sigval) { .sival_int = 1 }) >= 0);
	313	assert_se(sigqueue(getpid_cached(), SIGRTMIN+3, (union sigval) { .sival_int = 2 }) >= 0);
	314	assert_se(sigqueue(getpid_cached(), SIGUSR2, (union sigval) { .sival_int = 3 }) >= 0);
	315	assert_se(sigqueue(getpid_cached(), SIGRTMIN+3, (union sigval) { .sival_int = 4 }) >= 0);
	316	assert_se(sigqueue(getpid_cached(), SIGUSR2, (union sigval) { .sival_int = 5 }) >= 0);
9da4cb2b LP	317
	318	assert_se(n_rtqueue == 0);
	319	assert_se(last_rtqueue_sigval == 0);
	320
	321	assert_se(sd_event_run(e, (uint64_t) -1) >= 1);
	322	assert_se(n_rtqueue == 1);
	323	assert_se(last_rtqueue_sigval == 2); /* first SIGRTMIN+3 */
	324
	325	assert_se(sd_event_run(e, (uint64_t) -1) >= 1);
	326	assert_se(n_rtqueue == 2);
	327	assert_se(last_rtqueue_sigval == 4); /* second SIGRTMIN+3 */
	328
	329	assert_se(sd_event_run(e, (uint64_t) -1) >= 1);
	330	assert_se(n_rtqueue == 3);
	331	assert_se(last_rtqueue_sigval == 3); /* first SIGUSR2 */
	332
	333	assert_se(sd_event_run(e, (uint64_t) -1) >= 1);
	334	assert_se(n_rtqueue == 4);
	335	assert_se(last_rtqueue_sigval == 1); /* SIGRTMIN+2 */
	336
	337	assert_se(sd_event_run(e, 0) == 0); /* the other SIGUSR2 is dropped, because the first one was still queued */
	338	assert_se(n_rtqueue == 4);
	339	assert_se(last_rtqueue_sigval == 1);
	340
	341	sd_event_source_unref(u);
	342	sd_event_source_unref(v);
	343	sd_event_source_unref(s);
	344
	345	sd_event_unref(e);
	346	}
	347
41e09d62 LP	348	#define CREATE_EVENTS_MAX (70000U)
	349
	350	struct inotify_context {
	351	bool delete_self_handler_called;
	352	unsigned create_called[CREATE_EVENTS_MAX];
	353	unsigned create_overflow;
	354	unsigned n_create_events;
	355	};
	356
	357	static void maybe_exit(sd_event_source s, struct inotify_context c) {
	358	unsigned n;
	359
	360	assert(s);
	361	assert(c);
	362
	363	if (!c->delete_self_handler_called)
	364	return;
	365
	366	for (n = 0; n < 3; n++) {
	367	unsigned i;
	368
	369	if (c->create_overflow & (1U << n))
	370	continue;
	371
	372	for (i = 0; i < c->n_create_events; i++)
	373	if (!(c->create_called[i] & (1U << n)))
	374	return;
	375	}
	376
	377	sd_event_exit(sd_event_source_get_event(s), 0);
	378	}
	379
	380	static int inotify_handler(sd_event_source s, const struct inotify_event ev, void *userdata) {
	381	struct inotify_context *c = userdata;
	382	const char *description;
	383	unsigned bit, n;
	384
	385	assert_se(sd_event_source_get_description(s, &description) >= 0);
	386	assert_se(safe_atou(description, &n) >= 0);
	387
	388	assert_se(n <= 3);
	389	bit = 1U << n;
	390
	391	if (ev->mask & IN_Q_OVERFLOW) {
	392	log_info("inotify-handler <%s>: overflow", description);
	393	c->create_overflow \|= bit;
	394	} else if (ev->mask & IN_CREATE) {
	395	unsigned i;
	396
	397	log_info("inotify-handler <%s>: create on %s", description, ev->name);
	398
	399	if (!streq(ev->name, "sub")) {
	400	assert_se(safe_atou(ev->name, &i) >= 0);
	401
	402	assert_se(i < c->n_create_events);
	403	c->create_called[i] \|= bit;
	404	}
	405	} else if (ev->mask & IN_DELETE) {
	406	log_info("inotify-handler <%s>: delete of %s", description, ev->name);
	407	assert_se(streq(ev->name, "sub"));
	408	} else
	409	assert_not_reached("unexpected inotify event");
	410
	411	maybe_exit(s, c);
412	return 1;
413	}
414
415	static int delete_self_handler(sd_event_source s, const struct inotify_event ev, void *userdata) {
416	struct inotify_context *c = userdata;
417
418	if (ev->mask & IN_Q_OVERFLOW) {
419	log_info("delete-self-handler: overflow");
420	c->delete_self_handler_called = true;
421	} else if (ev->mask & IN_DELETE_SELF) {
422	log_info("delete-self-handler: delete-self");
423	c->delete_self_handler_called = true;
424	} else if (ev->mask & IN_IGNORED) {
425	log_info("delete-self-handler: ignore");
426	} else
427	assert_not_reached("unexpected inotify event (delete-self)");
428
429	maybe_exit(s, c);
430	return 1;
431	}
432
433	static void test_inotify(unsigned n_create_events) {
434	_cleanup_(rm_rf_physical_and_freep) char *p = NULL;
435	sd_event_source a = NULL, b = NULL, c = NULL, d = NULL;
436	struct inotify_context context = {
437	.n_create_events = n_create_events,
438	};
439	sd_event *e = NULL;
440	const char *q;
441	unsigned i;
442
443	assert_se(sd_event_default(&e) >= 0);
444
445	assert_se(mkdtemp_malloc("/tmp/test-inotify-XXXXXX", &p) >= 0);
446
447	assert_se(sd_event_add_inotify(e, &a, p, IN_CREATE\|IN_ONLYDIR, inotify_handler, &context) >= 0);
448	assert_se(sd_event_add_inotify(e, &b, p, IN_CREATE\|IN_DELETE\|IN_DONT_FOLLOW, inotify_handler, &context) >= 0);
449	assert_se(sd_event_source_set_priority(b, SD_EVENT_PRIORITY_IDLE) >= 0);
450	assert_se(sd_event_source_set_priority(b, SD_EVENT_PRIORITY_NORMAL) >= 0);
451	assert_se(sd_event_add_inotify(e, &c, p, IN_CREATE\|IN_DELETE\|IN_EXCL_UNLINK, inotify_handler, &context) >= 0);
452	assert_se(sd_event_source_set_priority(c, SD_EVENT_PRIORITY_IDLE) >= 0);
453
454	assert_se(sd_event_source_set_description(a, "0") >= 0);
455	assert_se(sd_event_source_set_description(b, "1") >= 0);
456	assert_se(sd_event_source_set_description(c, "2") >= 0);
457
458	q = strjoina(p, "/sub");
459	assert_se(touch(q) >= 0);
460	assert_se(sd_event_add_inotify(e, &d, q, IN_DELETE_SELF, delete_self_handler, &context) >= 0);
461
462	for (i = 0; i < n_create_events; i++) {
463	char buf[DECIMAL_STR_MAX(unsigned)+1];
464	_cleanup_free_ char *z;
465
466	xsprintf(buf, "%u", i);
467	assert_se(z = strjoin(p, "/", buf));
468
469	assert_se(touch(z) >= 0);
470	}
471
472	assert_se(unlink(q) >= 0);
473
474	assert_se(sd_event_loop(e) >= 0);
475
476	sd_event_source_unref(a);
477	sd_event_source_unref(b);
478	sd_event_source_unref(c);
479	sd_event_source_unref(d);
480
481	sd_event_unref(e);
482	}
483
9da4cb2b	484	int main(int argc, char *argv[]) {
6d7c4033	485	test_setup_logging(LOG_DEBUG);
2c86ba5a	486
9da4cb2b	487	test_basic();
2c86ba5a	488	test_sd_event_now();
9da4cb2b	489	test_rtqueue();
fd38203a	490
41e09d62 LP	491	test_inotify(100); /* should work without overflow */
	492	test_inotify(33000); /* should trigger a q overflow */
	493
fd38203a LP	494	return 0;
fd38203a LP	495	}