2 * Copyright (c) 2014 Baptiste Daroussin <bapt@FreeBSD.org>
3 * Copyright (c) 2014 Vsevolod Stakhov <vsevolod@FreeBSD.org>
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer
11 * in this position and unchanged.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
31 #include <sys/procctl.h>
46 #define EXIT_TIMEOUT 124
48 static sig_atomic_t sig_chld = 0;
49 static sig_atomic_t sig_term = 0;
50 static sig_atomic_t sig_alrm = 0;
51 static sig_atomic_t sig_ign = 0;
57 fprintf(stderr, "Usage: %s [--signal sig | -s sig] [--preserve-status]"
58 " [--kill-after time | -k time] [--foreground] <duration> <command>"
59 " <arg ...>\n", getprogname());
65 parse_duration(const char *duration)
70 ret = strtod(duration, &end);
71 if (ret == 0 && end == duration)
72 errx(125, "invalid duration");
74 if (end == NULL || *end == '\0')
77 if (end != NULL && *(end + 1) != '\0')
78 errx(EX_USAGE, "invalid duration");
93 errx(125, "invalid duration");
96 if (ret < 0 || ret >= 100000000UL)
97 errx(125, "invalid duration");
103 parse_signal(const char *str)
108 sig = strtonum(str, 1, sys_nsig - 1, &errstr);
112 if (strncasecmp(str, "SIG", 3) == 0)
115 for (i = 1; i < sys_nsig; i++) {
116 if (strcasecmp(str, sys_signame[i]) == 0)
120 errx(125, "invalid signal");
124 sig_handler(int signo)
126 if (sig_ign != 0 && signo == sig_ign) {
149 set_interval(double iv)
151 struct itimerval tim;
153 memset(&tim, 0, sizeof(tim));
154 tim.it_value.tv_sec = (time_t)iv;
156 tim.it_value.tv_usec = (suseconds_t)(iv * 1000000UL);
158 if (setitimer(ITIMER_REAL, &tim, NULL) == -1)
159 err(EX_OSERR, "setitimer()");
163 main(int argc, char **argv)
167 int foreground, preserve;
168 int error, pstat, status;
169 int killsig = SIGTERM;
173 bool timedout = false;
174 bool do_second_kill = false;
175 bool child_done = false;
176 struct sigaction signals;
177 struct procctl_reaper_status info;
178 struct procctl_reaper_kill killemall;
189 foreground = preserve = 0;
192 const struct option longopts[] = {
193 { "preserve-status", no_argument, &preserve, 1 },
194 { "foreground", no_argument, &foreground, 1 },
195 { "kill-after", required_argument, NULL, 'k'},
196 { "signal", required_argument, NULL, 's'},
197 { "help", no_argument, NULL, 'h'},
201 while ((ch = getopt_long(argc, argv, "+k:s:h", longopts, NULL)) != -1) {
204 do_second_kill = true;
205 second_kill = parse_duration(optarg);
208 killsig = parse_signal(optarg);
225 first_kill = parse_duration(argv[0]);
230 /* Acquire a reaper */
231 if (procctl(P_PID, getpid(), PROC_REAP_ACQUIRE, NULL) == -1)
232 err(EX_OSERR, "Fail to acquire the reaper");
235 memset(&signals, 0, sizeof(signals));
236 sigemptyset(&signals.sa_mask);
238 if (killsig != SIGKILL && killsig != SIGSTOP)
239 signums[0] = killsig;
241 for (i = 0; i < sizeof(signums) / sizeof(signums[0]); i ++)
242 sigaddset(&signals.sa_mask, signums[i]);
244 signals.sa_handler = sig_handler;
245 signals.sa_flags = SA_RESTART;
247 for (i = 0; i < sizeof(signums) / sizeof(signums[0]); i ++)
248 if (signums[i] != -1 && signums[i] != 0 &&
249 sigaction(signums[i], &signals, NULL) == -1)
250 err(EX_OSERR, "sigaction()");
252 signal(SIGTTIN, SIG_IGN);
253 signal(SIGTTOU, SIG_IGN);
257 err(EX_OSERR, "fork()");
260 signal(SIGTTIN, SIG_DFL);
261 signal(SIGTTOU, SIG_DFL);
263 error = execvp(argv[0], argv);
266 err(127, "exec(%s)", argv[0]);
268 err(126, "exec(%s)", argv[0]);
272 if (sigprocmask(SIG_BLOCK, &signals.sa_mask, NULL) == -1)
273 err(EX_OSERR, "sigprocmask()");
275 /* parent continues here */
276 set_interval(first_kill);
279 sigemptyset(&signals.sa_mask);
280 sigsuspend(&signals.sa_mask);
285 while ((cpid = waitpid(-1, &status, WNOHANG)) != 0) {
291 } else if (cpid == pid) {
300 procctl(P_PID, getpid(),
301 PROC_REAP_STATUS, &info);
302 if (info.rs_children == 0)
306 } else if (sig_alrm) {
311 killemall.rk_sig = killsig;
312 killemall.rk_flags = 0;
313 procctl(P_PID, getpid(), PROC_REAP_KILL,
318 if (do_second_kill) {
319 set_interval(second_kill);
326 } else if (sig_term) {
328 killemall.rk_sig = sig_term;
329 killemall.rk_flags = 0;
330 procctl(P_PID, getpid(), PROC_REAP_KILL,
335 if (do_second_kill) {
336 set_interval(second_kill);
345 while (!child_done && wait(&pstat) == -1) {
347 err(EX_OSERR, "waitpid()");
351 procctl(P_PID, getpid(), PROC_REAP_RELEASE, NULL);
353 if (WEXITSTATUS(pstat))
354 pstat = WEXITSTATUS(pstat);
355 else if(WIFSIGNALED(pstat))
356 pstat = 128 + WTERMSIG(pstat);
358 if (timedout && !preserve)
359 pstat = EXIT_TIMEOUT;