GopherProxy

	killall5.c - ubase - suckless linux base utils
	git clone git://git.suckless.org/ubase
	Log
	Files
	Refs
	README
	LICENSE
	---
	killall5.c (2155B)
	---
	1 /* See LICENSE file for copyright and license details. */
	2 #include <dirent.h>
	3 #include <limits.h>
	4 #include <signal.h>
	5 #include <stdio.h>
	6 #include <stdlib.h>
	7 #include <string.h>
	8 #include <unistd.h>
	9
	10 #include "proc.h"
	11 #include "queue.h"
	12 #include "util.h"
	13
	14 struct {
	15 const char *name;
	16 int sig;
	17 } sigs[] = {
	18 #define SIG(n) { #n, SIG##n }
	19 SIG(ABRT), SIG(ALRM), SIG(BUS), SIG(CHLD), SIG(CONT), SIG(FPE),…
	20 SIG(ILL), SIG(INT), SIG(KILL), SIG(PIPE), SIG(QUIT), SIG(SEGV)…
	21 SIG(TERM), SIG(TSTP), SIG(TTIN), SIG(TTOU), SIG(USR1), SIG(USR2)…
	22 #undef SIG
	23 };
	24
	25 struct pidentry {
	26 pid_t pid;
	27 SLIST_ENTRY(pidentry) entry;
	28 };
	29
	30 static SLIST_HEAD(, pidentry) omitpid_head;
	31
	32 static void
	33 usage(void)
	34 {
	35 eprintf("usage: %s [-o pid1,pid2,..,pidN] [-s signal]\n", argv0);
	36 }
	37
	38 int
	39 main(int argc, char *argv[])
	40 {
	41 struct pidentry *pe;
	42 struct dirent *entry;
	43 DIR *dp;
	44 char p, arg = NULL;
	45 char end, v;
	46 int oflag = 0;
	47 int sig = SIGTERM;
	48 pid_t pid;
	49 size_t i;
	50
	51 ARGBEGIN {
	52 case 's':
	53 v = EARGF(usage());
	54 sig = strtol(v, &end, 0);
	55 if (*end == '\0')
	56 break;
	57 for (i = 0; i < LEN(sigs); i++) {
	58 if (strcasecmp(v, sigs[i].name) == 0) {
	59 sig = sigs[i].sig;
	60 break;
	61 }
	62 }
	63 if (i == LEN(sigs))
	64 eprintf("%s: unknown signal\n", v);
	65 break;
	66 case 'o':
	67 oflag = 1;
	68 arg = EARGF(usage());
	69 break;
	70 default:
	71 usage();
	72 } ARGEND;
	73
	74 SLIST_INIT(&omitpid_head);
	75
	76 if (oflag) {
	77 for (p = strtok(arg, ","); p; p = strtok(NULL, ",")) {
	78 pe = emalloc(sizeof(*pe));
	79 pe->pid = estrtol(p, 10);
	80 SLIST_INSERT_HEAD(&omitpid_head, pe, entry);
	81 }
	82 }
	83
	84 if (sig != SIGSTOP && sig != SIGCONT)
	85 kill(-1, SIGSTOP);
	86
	87 if (!(dp = opendir("/proc")))
	88 eprintf("opendir /proc:");
	89 while ((entry = readdir(dp))) {
	90 if (pidfile(entry->d_name) == 0)
	91 continue;
	92 pid = estrtol(entry->d_name, 10);
	93 if (pid == 1 \|\| pid == getpid() \|\|
	94 getsid(pid) == getsid(0) \|\| getsid(pid) == 0)
	95 continue;
	96 if (oflag == 1) {
	97 SLIST_FOREACH(pe, &omitpid_head, entry)
	98 if (pe->pid == pid)
	99 break;
	100 if (pe)
	101 continue;
	102 }
	103 kill(pid, sig);
	104 }
	105 closedir(dp);
	106
	107 if (sig != SIGSTOP && sig != SIGCONT)
	108 kill(-1, SIGCONT);
	109
	110 return 0;
	111 }