view toys/other/timeout.c @ 1726:26170eb7685d draft

Fix thinko (don't &toybuf to get scratch space) and add -v option.
author Rob Landley <>
date Mon, 09 Mar 2015 15:06:10 -0500
parents cbb1aca81eca
children c0ef9b7976f0
line wrap: on
line source

/* timeout.c - Run command line with a timeout
 * Copyright 2013 Rob Landley <>
 * No standard

USE_TIMEOUT(NEWTOY(timeout, "<2^vk:s: ", TOYFLAG_BIN))

config TIMEOUT
  bool "timeout"
  default y
  depends on TOYBOX_FLOAT
    usage: timeout [-k LENGTH] [-s SIGNAL] LENGTH COMMAND...

    Run command line as a child process, sending child a signal if the
    command doesn't exit soon enough.

    Length 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

#define FOR_timeout
#include "toys.h"

  char *s_signal;
  char *k_timeout;

  int nextsig;
  pid_t pid;
  struct timeval ktv;
  struct itimerval itv;

static void handler(int i)
  fprintf(stderr, "timeout pid %d signal %d\n",, TT.nextsig);
  kill(, TT.nextsig);
  if (TT.k_timeout) {
    TT.k_timeout = 0;
    TT.nextsig = SIGKILL;
    signal(SIGALRM, handler); = TT.ktv;
    setitimer(ITIMER_REAL, &, (void *)toybuf);

void timeout_main(void)
  // Parse early to get any errors out of the way. = xparsetime(*toys.optargs, 1000000, &;

  if (TT.k_timeout)
    TT.ktv.tv_sec = xparsetime(TT.k_timeout, 1000000, &TT.ktv.tv_usec);
  TT.nextsig = SIGTERM;
  if (TT.s_signal && -1 == (TT.nextsig = sig_to_num(TT.s_signal)))
    error_exit("bad -s: '%s'", TT.s_signal);

  if (!( = xfork())) xexec(toys.optargs+1);
  else {
    int status;

    signal(SIGALRM, handler);
    setitimer(ITIMER_REAL, &, (void *)toybuf);
    while (-1 == waitpid(, &status, 0) && errno == EINTR);
    toys.exitval = WIFEXITED(status)
      ? WEXITSTATUS(status) : WTERMSIG(status) + 127;