1 /* timeout.c - Run command line with a timeout
2 *
3 * Copyright 2013 Rob Landley <rob@landley.net>
4 *
5 * No standard
6
7 USE_TIMEOUT(NEWTOY(timeout, "<2^vk:s: ", TOYFLAG_BIN))
8
9 config TIMEOUT
10 bool "timeout"
11 default y
12 depends on TOYBOX_FLOAT
13 help
14 usage: timeout [-k LENGTH] [-s SIGNAL] LENGTH COMMAND...
15
16 Run command line as a child process, sending child a signal if the
17 command doesn't exit soon enough.
18
19 Length can be a decimal fraction. An optional suffix can be "m"
20 (minutes), "h" (hours), "d" (days), or "s" (seconds, the default).
21
22 -s Send specified signal (default TERM)
23 -k Send KILL signal if child still running this long after first signal
24 -v Verbose
25 */
26
27 #define FOR_timeout
28 #include "toys.h"
29
GLOBALS(char * s_signal;char * k_timeout;int nextsig;pid_t pid;struct timeval ktv;struct itimerval itv;)30 GLOBALS(
31 char *s_signal;
32 char *k_timeout;
33
34 int nextsig;
35 pid_t pid;
36 struct timeval ktv;
37 struct itimerval itv;
38 )
39
40 static void handler(int i)
41 {
42 if (toys.optflags & FLAG_v)
43 fprintf(stderr, "timeout pid %d signal %d\n", TT.pid, TT.nextsig);
44 kill(TT.pid, TT.nextsig);
45
46 if (TT.k_timeout) {
47 TT.k_timeout = 0;
48 TT.nextsig = SIGKILL;
49 xsignal(SIGALRM, handler);
50 TT.itv.it_value = TT.ktv;
51 setitimer(ITIMER_REAL, &TT.itv, (void *)toybuf);
52 }
53 }
54
timeout_main(void)55 void timeout_main(void)
56 {
57 // Parse early to get any errors out of the way.
58 TT.itv.it_value.tv_sec = xparsetime(*toys.optargs, 1000000, &TT.itv.it_value.tv_usec);
59
60 if (TT.k_timeout)
61 TT.ktv.tv_sec = xparsetime(TT.k_timeout, 1000000, &TT.ktv.tv_usec);
62 TT.nextsig = SIGTERM;
63 if (TT.s_signal && -1 == (TT.nextsig = sig_to_num(TT.s_signal)))
64 error_exit("bad -s: '%s'", TT.s_signal);
65
66 if (!(TT.pid = XVFORK())) xexec(toys.optargs+1);
67 else {
68 xsignal(SIGALRM, handler);
69 setitimer(ITIMER_REAL, &TT.itv, (void *)toybuf);
70 toys.exitval = xwaitpid(TT.pid);
71 }
72 }
73