175 lines
3.7 KiB
Bash
Executable File
175 lines
3.7 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (c) 2008 Peter Holm <pho@FreeBSD.org>
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# All rights reserved.
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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 AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# Test scenario by kib@
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. ../default.cfg
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odir=`pwd`
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cd /tmp
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sed '1,/^EOF/d' < $odir/$0 > kevent4.c
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mycc -o kevent4 -Wall kevent4.c -pthread || exit 1
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rm -f kevent4.c
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cd $odir
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export runRUNTIME=3m
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(cd ..; ./run.sh > /dev/null 2>&1) &
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rpid=$!
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(cd $RUNDIR; /tmp/kevent4 $rpid > /dev/null) &
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sleep 120
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kill $rpid
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../tools/killall.sh > /dev/null 2>&1
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kill $!
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wait
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rm -f /tmp/kevent4
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exit
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EOF
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#include <sys/types.h>
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#include <sys/event.h>
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#include <unistd.h>
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#include <errno.h>
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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#ifndef true
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# define true 1
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#endif
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static int kq;
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static void
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err(const char *msg, int err_no)
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{
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fprintf(stderr, "%s: %s\n", msg, strerror(err_no));
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exit(1);
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}
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static void
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init_kq()
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{
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kq = kqueue();
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if (kq == -1)
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err("kqueue", errno);
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}
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static void
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add_watch(pid_t pid)
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{
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struct kevent kev;
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bzero(&kev, sizeof(kev));
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kev.ident = pid;
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kev.flags = EV_ADD | EV_ENABLE;
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kev.filter = EVFILT_PROC;
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kev.fflags = NOTE_EXIT | NOTE_FORK | NOTE_EXEC | NOTE_TRACK;
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while (true) {
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int res = kevent(kq, &kev, 1, NULL, 0, NULL);
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if (res == -1) {
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if (errno == EINTR)
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continue;
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if (errno == ESRCH)
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break;
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int err_no = errno;
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char msg[64];
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snprintf(msg, sizeof(msg),
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"kevent - add watch for pid %u", pid);
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err(msg, err_no);
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}
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else
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break;
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}
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}
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static void polling()
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{
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struct kevent kev[10];
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pid_t pid;
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int i;
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while (true) {
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bzero(&kev, sizeof(kev));
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int res = kevent(kq, NULL, 0, kev,
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sizeof(kev) / sizeof(kev[0]), NULL);
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if (res == -1) {
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if (errno == EINTR)
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continue;
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if (errno == ESRCH)
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continue;
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err("kevent", errno);
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}
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for (i = 0; i < res; i++) {
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pid = kev[i].ident;
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if (kev[i].fflags & NOTE_CHILD) {
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add_watch(pid);
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printf("%u - new process, parent %u\n", pid,
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(unsigned int)kev[i].data);
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}
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if (kev[i].fflags & NOTE_FORK) {
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printf("%u forked\n", pid);
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}
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if (kev[i].fflags & NOTE_EXEC) {
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printf("%u called exec\n", pid);
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}
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if (kev[i].fflags & NOTE_EXIT) {
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printf("%u exited\n", pid);
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}
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if (kev[i].fflags & NOTE_TRACK) {
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printf("%u forked - track\n", pid);
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}
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if (kev[i].fflags & NOTE_TRACKERR) {
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fprintf(stderr, "%u - track error\n", pid);
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}
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}
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}
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}
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int main(int argc, char *argv[])
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{
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if (argc != 2) {
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fprintf(stderr, "pid ?\n");
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return (2);
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}
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pid_t parent = atoi(argv[1]);
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init_kq();
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add_watch(parent);
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polling();
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return (0);
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}
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