2b34e84335
This change implements NOTE_ABSTIME flag for EVFILT_TIMER, which specifies that the data field contains absolute time to fire the event. To make this useful, data member of the struct kevent must be extended to 64bit. Using the opportunity, I also added ext members. This changes struct kevent almost to Apple struct kevent64, except I did not changed type of ident and udata, the later would cause serious API incompatibilities. The type of ident was kept uintptr_t since EVFILT_AIO returns a pointer in this field, and e.g. CHERI is sensitive to the type (discussed with brooks, jhb). Unlike Apple kevent64, symbol versioning allows us to claim ABI compatibility and still name the new syscall kevent(2). Compat shims are provided for both host native and compat32. Requested by: bapt Reviewed by: bapt, brooks, ngie (previous version) Sponsored by: The FreeBSD Foundation Differential revision: https://reviews.freebsd.org/D11025
144 lines
3.8 KiB
C
144 lines
3.8 KiB
C
/* $NetBSD: t_sig.c,v 1.3 2017/01/13 21:30:41 christos Exp $ */
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/*-
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* Copyright (c) 2002, 2008 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Luke Mewburn and Jaromir Dolecek.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__COPYRIGHT("@(#) Copyright (c) 2008\
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The NetBSD Foundation, inc. All rights reserved.");
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__RCSID("$NetBSD: t_sig.c,v 1.3 2017/01/13 21:30:41 christos Exp $");
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#include <sys/event.h>
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#include <sys/ioctl.h>
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#include <sys/param.h>
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#include <sys/time.h>
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#include <sys/wait.h>
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#include <inttypes.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <atf-c.h>
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#include "h_macros.h"
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#define NSIGNALS 5
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ATF_TC(sig);
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ATF_TC_HEAD(sig, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Checks EVFILT_SIGNAL");
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}
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ATF_TC_BODY(sig, tc)
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{
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struct timespec timeout;
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#ifdef __NetBSD__
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struct kfilter_mapping km;
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#endif
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struct kevent event[1];
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#ifdef __NetBSD__
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char namebuf[32];
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#endif
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pid_t pid, child;
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int kq, n, num, status;
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pid = getpid();
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(void)printf("my pid: %d\n", pid);
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/* fork a child to send signals */
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RL(child = fork());
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if (child == 0) {
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int i;
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(void)sleep(2);
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for(i = 0; i < NSIGNALS; ++i) {
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(void)kill(pid, SIGUSR1);
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(void)sleep(2);
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}
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_exit(0);
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/* NOTREACHED */
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}
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RL(kq = kqueue());
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#ifdef __NetBSD__
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(void)strlcpy(namebuf, "EVFILT_SIGNAL", sizeof(namebuf));
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km.name = namebuf;
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RL(ioctl(kq, KFILTER_BYNAME, &km));
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(void)printf("got %d as filter number for `%s'.\n", km.filter, km.name);
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#endif
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/* ignore the signal to avoid taking it for real */
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REQUIRE_LIBC(signal(SIGUSR1, SIG_IGN), SIG_ERR);
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event[0].ident = SIGUSR1;
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#ifdef __NetBSD__
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event[0].filter = km.filter;
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#else
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event[0].filter = EVFILT_SIGNAL;
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#endif
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event[0].flags = EV_ADD | EV_ENABLE;
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RL(kevent(kq, event, 1, NULL, 0, NULL));
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(void)sleep(1);
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timeout.tv_sec = 1;
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timeout.tv_nsec = 0;
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for (num = 0; num < NSIGNALS; num += n) {
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struct timeval then, now, diff;
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RL(gettimeofday(&then, NULL));
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RL(n = kevent(kq, NULL, 0, event, 1, &timeout));
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RL(gettimeofday(&now, NULL));
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timersub(&now, &then, &diff);
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(void)printf("sig: kevent returned %d in %lld.%06ld\n",
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n, (long long)diff.tv_sec, (long)diff.tv_usec);
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if (n == 0)
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continue;
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(void)printf("sig: kevent flags: 0x%x, data: %" PRId64 " (# "
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"times signal posted)\n", event[0].flags, event[0].data);
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}
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(void)waitpid(child, &status, 0);
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(void)printf("sig: finished successfully\n");
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}
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ATF_TP_ADD_TCS(tp)
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{
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ATF_TP_ADD_TC(tp, sig);
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return atf_no_error();
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}
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