sbase/kill.c

80 lines
1.5 KiB
C

/* See LICENSE file for copyright and license details. */
#include <signal.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <strings.h>
#include <unistd.h>
#include <sys/wait.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] [pid...]\n"
" %s -l [signum]\n", argv0, argv0);
}
int
main(int argc, char *argv[])
{
bool lflag = false;
char *end, *v;
int sig = SIGTERM;
pid_t pid;
size_t i;
ARGBEGIN {
case 'l':
lflag = true;
break;
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)) {
sig = sigs[i].sig;
break;
}
}
if(i == LEN(sigs))
eprintf("%s: unknown signal\n", v);
break;
default:
usage();
} ARGEND;
if(argc < 1)
usage();
if(lflag) {
sig = (argc > 0) ? 0 : estrtol(argv[0], 0);
if(sig > 128)
sig = WTERMSIG(sig);
for(i = 0; i < LEN(sigs); i++)
if(sigs[i].sig == sig || sig == 0)
putword(sigs[i].name);
putchar('\n');
} else for(; argc > 0; argc--, argv++) {
pid = estrtol(argv[0], 0);
if(kill(pid, sig) == -1)
eprintf("kill %d:", pid);
}
return EXIT_SUCCESS;
}