mirror of
git://git.suckless.org/ubase
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116 lines
2.2 KiB
C
116 lines
2.2 KiB
C
/* 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 <string.h>
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#include <unistd.h>
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#include "proc.h"
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#include "queue.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 [-o pid1,pid2,..,pidN] [-s signal]\n", argv0);
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}
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struct pidentry {
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pid_t pid;
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TAILQ_ENTRY(pidentry) entry;
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};
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static TAILQ_HEAD(omitpid_head, pidentry) omitpid_head;
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int
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main(int argc, char *argv[])
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{
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struct pidentry *pe, *tmp;
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int oflag = 0;
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char *p, *arg = NULL;
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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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case 'o':
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oflag = 1;
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arg = EARGF(usage());
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break;
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default:
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usage();
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} ARGEND;
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TAILQ_INIT(&omitpid_head);
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for (p = strtok(arg, ","); p; p = strtok(NULL, ",")) {
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pe = emalloc(sizeof(*pe));
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pe->pid = estrtol(p, 10);
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TAILQ_INSERT_TAIL(&omitpid_head, pe, entry);
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}
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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) == 0)
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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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if (oflag == 1) {
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TAILQ_FOREACH(pe, &omitpid_head, entry)
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if (pe->pid == pid)
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break;
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if (pe)
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continue;
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}
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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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for (pe = TAILQ_FIRST(&omitpid_head); pe; pe = tmp) {
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tmp = TAILQ_NEXT(pe, entry);
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TAILQ_REMOVE(&omitpid_head, pe, entry);
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free(pe);
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}
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return 0;
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}
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