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/* kill.c - a program to send signals to processes
*
* Copyright 2012 Daniel Walter <d.walter@0x90.at>
*
* See http://opengroup.org/onlinepubs/9699919799/utilities/kill.html
USE_KILL(NEWTOY(kill, "?s: l", TOYFLAG_BIN))
config KILL
bool "kill"
default y
help
usage: kill [-l [SIGNAL] | -s SIGNAL | -SIGNAL] pid...
Send a signal to a process
*/
#define FOR_kill
#include "toys.h"
GLOBALS(
char *signame;
)
void kill_main(void)
{
int signum;
char *tmp, **args = toys.optargs;
pid_t pid;
// list signal(s)
if (toys.optflags & FLAG_l) {
if (*args) {
int signum = sig_to_num(*args);
char *s = NULL;
if (signum>=0) s = num_to_sig(signum&127);
puts(s ? s : "UNKNOWN");
} else sig_to_num(NULL);
return;
}
// signal must come before pids, so "kill -9 -1" isn't confusing.
if (!TT.signame && *args && **args=='-') TT.signame=*(args++)+1;
if (TT.signame) {
char *arg;
int i = strtol(TT.signame, &arg, 10);
if (!*arg) arg = num_to_sig(i);
else arg = TT.signame;
if (!arg || -1 == (signum = sig_to_num(arg)))
error_exit("Unknown signal '%s'", arg);
} else signum = SIGTERM;
if (!*args) {
toys.exithelp++;
error_exit("missing argument");
}
while (*args) {
char *arg = *(args++);
pid = strtol(arg, &tmp, 10);
if (*tmp || kill(pid, signum) < 0) {
error_msg("unknown pid '%s'", arg);
toys.exitval = EXIT_FAILURE;
}
}
}
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