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/*
* Copyright (c) 2009 Mark Heily <mark@heily.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* $FreeBSD$
*/
#include "common.h"
static int sigusr1_caught = 0;
int kqfd;
static void
sig_handler(int signum)
{
sigusr1_caught = 1;
}
static void
add_and_delete(void)
{
struct kevent kev;
pid_t pid;
/* Create a child that waits to be killed and then exits */
pid = fork();
if (pid == 0) {
pause();
exit(2);
}
printf(" -- child created (pid %d)\n", (int) pid);
test_begin("kevent(EVFILT_PROC, EV_ADD)");
test_no_kevents();
kevent_add(kqfd, &kev, pid, EVFILT_PROC, EV_ADD, 0, 0, NULL);
test_no_kevents();
success();
test_begin("kevent(EVFILT_PROC, EV_DELETE)");
test_no_kevents();
kevent_add(kqfd, &kev, pid, EVFILT_PROC, EV_DELETE, 0, 0, NULL);
if (kill(pid, SIGKILL) < 0)
err(1, "kill");
sleep(1);
test_no_kevents();
success();
}
static void
event_trigger(void)
{
struct kevent kev;
pid_t pid;
test_begin("kevent(EVFILT_PROC, wait)");
/* Create a child that waits to be killed and then exits */
pid = fork();
if (pid == 0) {
pause();
printf(" -- child caught signal, exiting\n");
exit(2);
}
printf(" -- child created (pid %d)\n", (int) pid);
test_no_kevents();
kevent_add(kqfd, &kev, pid, EVFILT_PROC, EV_ADD, 0, 0, NULL);
/* Cause the child to exit, then retrieve the event */
printf(" -- killing process %d\n", (int) pid);
if (kill(pid, SIGUSR1) < 0)
err(1, "kill");
kevent_cmp(&kev, kevent_get(kqfd));
test_no_kevents();
success();
}
#ifdef TODO
void
test_kevent_signal_disable(void)
{
const char *test_id = "kevent(EVFILT_SIGNAL, EV_DISABLE)";
struct kevent kev;
test_begin(test_id);
EV_SET(&kev, SIGUSR1, EVFILT_SIGNAL, EV_DISABLE, 0, 0, NULL);
if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
err(1, "%s", test_id);
/* Block SIGUSR1, then send it to ourselves */
sigset_t mask;
sigemptyset(&mask);
sigaddset(&mask, SIGUSR1);
if (sigprocmask(SIG_BLOCK, &mask, NULL) == -1)
err(1, "sigprocmask");
if (kill(getpid(), SIGKILL) < 0)
err(1, "kill");
test_no_kevents();
success();
}
void
test_kevent_signal_enable(void)
{
const char *test_id = "kevent(EVFILT_SIGNAL, EV_ENABLE)";
struct kevent kev;
test_begin(test_id);
EV_SET(&kev, SIGUSR1, EVFILT_SIGNAL, EV_ENABLE, 0, 0, NULL);
if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
err(1, "%s", test_id);
/* Block SIGUSR1, then send it to ourselves */
sigset_t mask;
sigemptyset(&mask);
sigaddset(&mask, SIGUSR1);
if (sigprocmask(SIG_BLOCK, &mask, NULL) == -1)
err(1, "sigprocmask");
if (kill(getpid(), SIGUSR1) < 0)
err(1, "kill");
kev.flags = EV_ADD | EV_CLEAR;
#if LIBKQUEUE
kev.data = 1; /* WORKAROUND */
#else
kev.data = 2; // one extra time from test_kevent_signal_disable()
#endif
kevent_cmp(&kev, kevent_get(kqfd));
/* Delete the watch */
kev.flags = EV_DELETE;
if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
err(1, "%s", test_id);
success();
}
void
test_kevent_signal_del(void)
{
const char *test_id = "kevent(EVFILT_SIGNAL, EV_DELETE)";
struct kevent kev;
test_begin(test_id);
/* Delete the kevent */
EV_SET(&kev, SIGUSR1, EVFILT_SIGNAL, EV_DELETE, 0, 0, NULL);
if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
err(1, "%s", test_id);
/* Block SIGUSR1, then send it to ourselves */
sigset_t mask;
sigemptyset(&mask);
sigaddset(&mask, SIGUSR1);
if (sigprocmask(SIG_BLOCK, &mask, NULL) == -1)
err(1, "sigprocmask");
if (kill(getpid(), SIGUSR1) < 0)
err(1, "kill");
test_no_kevents();
success();
}
void
test_kevent_signal_oneshot(void)
{
const char *test_id = "kevent(EVFILT_SIGNAL, EV_ONESHOT)";
struct kevent kev;
test_begin(test_id);
EV_SET(&kev, SIGUSR1, EVFILT_SIGNAL, EV_ADD | EV_ONESHOT, 0, 0, NULL);
if (kevent(kqfd, &kev, 1, NULL, 0, NULL) < 0)
err(1, "%s", test_id);
/* Block SIGUSR1, then send it to ourselves */
sigset_t mask;
sigemptyset(&mask);
sigaddset(&mask, SIGUSR1);
if (sigprocmask(SIG_BLOCK, &mask, NULL) == -1)
err(1, "sigprocmask");
if (kill(getpid(), SIGUSR1) < 0)
err(1, "kill");
kev.flags |= EV_CLEAR;
kev.data = 1;
kevent_cmp(&kev, kevent_get(kqfd));
/* Send another one and make sure we get no events */
if (kill(getpid(), SIGUSR1) < 0)
err(1, "kill");
test_no_kevents();
success();
}
#endif
void
test_evfilt_proc()
{
kqfd = kqueue();
signal(SIGUSR1, sig_handler);
add_and_delete();
event_trigger();
signal(SIGUSR1, SIG_DFL);
#if TODO
test_kevent_signal_add();
test_kevent_signal_del();
test_kevent_signal_get();
test_kevent_signal_disable();
test_kevent_signal_enable();
test_kevent_signal_oneshot();
#endif
close(kqfd);
}
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