mirror of git://git.suckless.org/sbase
79 lines
1.5 KiB
C
79 lines
1.5 KiB
C
/* See LICENSE file for copyright and license details. */
|
|
#include <dirent.h>
|
|
#include <limits.h>
|
|
#include <signal.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <strings.h>
|
|
#include <unistd.h>
|
|
#include "proc.h"
|
|
#include "util.h"
|
|
|
|
struct {
|
|
const char *name;
|
|
int sig;
|
|
} sigs[] = {
|
|
#define SIG(n) { #n, SIG##n }
|
|
SIG(ABRT), SIG(ALRM), SIG(BUS), SIG(CHLD), SIG(CONT), SIG(FPE), SIG(HUP),
|
|
SIG(ILL), SIG(INT), SIG(KILL), SIG(PIPE), SIG(QUIT), SIG(SEGV), SIG(STOP),
|
|
SIG(TERM), SIG(TSTP), SIG(TTIN), SIG(TTOU), SIG(USR1), SIG(USR2), SIG(URG),
|
|
#undef SIG
|
|
};
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
eprintf("usage: %s [-s signal]\n", argv0);
|
|
}
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
DIR *dp;
|
|
struct dirent *entry;
|
|
char *end, *v;
|
|
int sig = SIGTERM;
|
|
pid_t pid;
|
|
size_t i;
|
|
|
|
ARGBEGIN {
|
|
case 's':
|
|
v = EARGF(usage());
|
|
sig = strtol(v, &end, 0);
|
|
if(*end == '\0')
|
|
break;
|
|
for(i = 0; i < LEN(sigs); i++) {
|
|
if(strcasecmp(v, sigs[i].name) == 0) {
|
|
sig = sigs[i].sig;
|
|
break;
|
|
}
|
|
}
|
|
if(i == LEN(sigs))
|
|
eprintf("%s: unknown signal\n", v);
|
|
break;
|
|
default:
|
|
usage();
|
|
} ARGEND;
|
|
|
|
if (sig != SIGSTOP && sig != SIGCONT)
|
|
kill(-1, SIGSTOP);
|
|
|
|
if (!(dp = opendir("/proc")))
|
|
eprintf("opendir /proc:");
|
|
while ((entry = readdir(dp))) {
|
|
if (pidfile(entry->d_name) == 0)
|
|
continue;
|
|
pid = estrtol(entry->d_name, 10);
|
|
if (pid == 1 || pid == getpid() ||
|
|
getsid(pid) == getsid(0) || getsid(pid) == 0)
|
|
continue;
|
|
kill(pid, sig);
|
|
}
|
|
closedir(dp);
|
|
|
|
if (sig != SIGSTOP && sig != SIGCONT)
|
|
kill(-1, SIGCONT);
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|