1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
/* timeout.c - Run command line with a timeout
*
* Copyright 2013 Rob Landley <rob@landley.net>
*
* No standard
USE_TIMEOUT(NEWTOY(timeout, "<2^(foreground)(preserve-status)vk:s(signal):", TOYFLAG_USR|TOYFLAG_BIN|TOYFLAG_ARGFAIL(125)))
config TIMEOUT
bool "timeout"
default y
help
usage: timeout [-k DURATION] [-s SIGNAL] DURATION COMMAND...
Run command line as a child process, sending child a signal if the
command doesn't exit soon enough.
DURATION can be a decimal fraction. An optional suffix can be "m"
(minutes), "h" (hours), "d" (days), or "s" (seconds, the default).
-s Send specified signal (default TERM)
-k Send KILL signal if child still running this long after first signal
-v Verbose
--foreground Don't create new process group
--preserve-status Exit with the child's exit status
*/
#define FOR_timeout
#include "toys.h"
GLOBALS(
char *s, *k;
int nextsig;
pid_t pid;
struct timespec kts;
struct itimerspec its;
timer_t timer;
)
static void handler(int i)
{
if (FLAG(v))
fprintf(stderr, "timeout pid %d signal %d\n", TT.pid, TT.nextsig);
toys.exitval = (TT.nextsig==9) ? 137 : 124;
kill(TT.pid, TT.nextsig);
if (TT.k) {
TT.k = 0;
TT.nextsig = SIGKILL;
xsignal(SIGALRM, handler);
TT.its.it_value = TT.kts;
if (timer_settime(TT.timer, 0, &TT.its, 0)) perror_exit("timer_settime");
}
}
void timeout_main(void)
{
struct sigevent se = { .sigev_notify = SIGEV_SIGNAL, .sigev_signo = SIGALRM };
// Use same ARGFAIL value for any remaining parsing errors
toys.exitval = 125;
xparsetimespec(*toys.optargs, &TT.its.it_value);
if (TT.k) xparsetimespec(TT.k, &TT.kts);
TT.nextsig = SIGTERM;
if (TT.s && -1 == (TT.nextsig = sig_to_num(TT.s)))
error_exit("bad -s: '%s'", TT.s);
if (!FLAG(foreground)) setpgid(0, 0);
toys.exitval = 0;
if (!(TT.pid = XVFORK())) xexec(toys.optargs+1);
else {
int status;
xsignal(SIGALRM, handler);
if (timer_create(CLOCK_MONOTONIC, &se, &TT.timer)) perror_exit("timer");
if (timer_settime(TT.timer, 0, &TT.its, 0)) perror_exit("timer_settime");
status = xwaitpid(TT.pid);
if (FLAG(preserve_status) || !toys.exitval) toys.exitval = status;
}
}
|
