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/* killall.c - Send signal (default: TERM) to all processes with given names.
*
* Copyright 2012 Andreas Heck <aheck@gmx.de>
*
* http://refspecs.linuxfoundation.org/LSB_4.1.0/LSB-Core-generic/LSB-Core-generic/killall.html
USE_KILLALL(NEWTOY(killall, "?s:lqvi", TOYFLAG_USR|TOYFLAG_BIN))
config KILLALL
bool "killall"
default y
help
usage: killall [-l] [-iqv] [-SIGNAL|-s SIGNAL] PROCESS_NAME...
Send a signal (default: TERM) to all processes with the given names.
-i ask for confirmation before killing
-l print list of all available signals
-q don't print any warnings or error messages
-s send SIGNAL instead of SIGTERM
-v report if the signal was successfully sent
*/
#define FOR_killall
#include "toys.h"
GLOBALS(
char *sig;
int signum;
pid_t cur_pid;
char **names;
short *err;
)
static int kill_process(pid_t pid, char *name)
{
int offset = 0;
if (pid == TT.cur_pid) return 0;
if (toys.optflags & FLAG_i) {
snprintf(toybuf, sizeof(toybuf), "Signal %s(%d) ?", name, (int)pid);
if (!yesno(toybuf, 0)) return 0;
}
errno = 0;
kill(pid, TT.signum);
for (;;) {
if (TT.names[offset] == name) {
TT.err[offset] = errno;
break;
} else offset++;
}
if (errno) {
if (!(toys.optflags & FLAG_q)) perror_msg("pid %d", (int)pid);
} else if (toys.optflags & FLAG_v)
printf("Killed %s(%d) with signal %d\n", name, pid, TT.signum);
return 0;
}
void killall_main(void)
{
int i;
TT.names = toys.optargs;
TT.signum = SIGTERM;
if (toys.optflags & FLAG_l) {
sig_to_num(NULL);
return;
}
if (TT.sig || (*TT.names && **TT.names == '-')) {
if (0 > (TT.signum = sig_to_num(TT.sig ? TT.sig : (*TT.names)+1))) {
if (toys.optflags & FLAG_q) exit(1);
error_exit("Invalid signal");
}
if (!TT.sig) {
TT.names++;
toys.optc--;
}
}
if (!(toys.optflags & FLAG_l) && !toys.optc) {
toys.exithelp++;
error_exit("no name");
}
TT.cur_pid = getpid();
TT.err = xmalloc(2*toys.optc);
for (i=0; i<toys.optc; i++) TT.err[i] = ESRCH;
names_to_pid(TT.names, kill_process);
for (i=0; i<toys.optc; i++) {
if (TT.err[i]) {
toys.exitval = 1;
errno = TT.err[i];
perror_msg("%s", TT.names[i]);
}
}
if (CFG_TOYBOX_FREE) free(TT.err);
}
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