sbase/kill.c
Connor Lane Smith d7f9bda740 cc -Wextra
2011-06-21 05:05:37 +01:00

73 lines
1.6 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"
#define LEN(x) (sizeof (x) / sizeof *(x))
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
};
int
main(int argc, char *argv[])
{
bool lflag = false;
char c, *end;
int sig = SIGTERM;
pid_t pid;
size_t i;
while((c = getopt(argc, argv, "ls:")) != -1)
switch(c) {
case 'l':
lflag = true;
break;
case 's':
sig = strtol(optarg, &end, 0);
if(*end == '\0')
break;
for(i = 0; i < LEN(sigs); i++)
if(!strcasecmp(optarg, sigs[i].name)) {
sig = sigs[i].sig;
break;
}
if(i == LEN(sigs))
eprintf("%s: unknown signal\n", optarg);
break;
default:
exit(EXIT_FAILURE);
}
if(lflag) {
if(optind < argc-1)
eprintf("usage: %s [-s signal] [pid...]\n"
" %s -l [signum]\n", argv[0], argv[0]);
sig = (optind == argc) ? 0 : estrtol(argv[optind], 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(; optind < argc; optind++) {
pid = estrtol(argv[optind], 0);
if(kill(pid, sig) == -1)
eprintf("kill %d:", pid);
}
return EXIT_SUCCESS;
}