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