mirror of git://git.suckless.org/sbase
130 lines
2.3 KiB
C
130 lines
2.3 KiB
C
/* See LICENSE file for copyright and license details. */
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#include <sys/wait.h>
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#include <ctype.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 <string.h>
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#include <strings.h>
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#include "util.h"
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struct {
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const char *name;
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const int sig;
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} sigs[] = {
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{ "0", 0 },
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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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const char *
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sig2name(const int sig)
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{
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size_t i;
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for (i = 0; i < LEN(sigs); i++)
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if (sigs[i].sig == sig)
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return sigs[i].name;
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eprintf("%d: bad signal number\n", sig);
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return NULL; /* not reached */
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}
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int
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name2sig(const char *name)
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{
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size_t i;
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for (i = 0; i < LEN(sigs); i++)
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if (!strcasecmp(sigs[i].name, name))
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return sigs[i].sig;
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eprintf("%s: bad signal name\n", name);
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return -1; /* not reached */
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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 signame | -num | -signame] pid ...\n"
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" %s -l [num]\n", argv0, 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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pid_t pid;
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size_t i;
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int ret = 0, sig = SIGTERM;
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argv0 = argv[0], argc--, argv++;
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if (!argc)
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usage();
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if ((*argv)[0] == '-') {
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switch ((*argv)[1]) {
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case 'l':
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if ((*argv)[2])
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goto longopt;
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argc--, argv++;
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if (!argc) {
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for (i = 0; i < LEN(sigs); i++)
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puts(sigs[i].name);
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} else if (argc == 1) {
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sig = estrtonum(*argv, 0, INT_MAX);
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if (sig > 128)
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sig = WTERMSIG(sig);
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puts(sig2name(sig));
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} else {
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usage();
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}
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return fshut(stdout, "<stdout>");
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case 's':
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if ((*argv)[2])
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goto longopt;
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argc--, argv++;
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if (!argc)
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usage();
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sig = name2sig(*argv);
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argc--, argv++;
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break;
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case '-':
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if ((*argv)[2])
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goto longopt;
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argc--, argv++;
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break;
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default:
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longopt:
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/* XSI-extensions -argnum and -argname*/
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if (isdigit((*argv)[1])) {
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sig = estrtonum((*argv) + 1, 0, INT_MAX);
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sig2name(sig);
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} else {
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sig = name2sig((*argv) + 1);
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}
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argc--, argv++;
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}
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}
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if (argc && !strcmp(*argv, "--"))
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argc--, argv++;
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if (!argc)
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usage();
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for (; *argv; argc--, argv++) {
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pid = estrtonum(*argv, INT_MIN, INT_MAX);
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if (kill(pid, sig) < 0) {
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weprintf("kill %d:", pid);
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ret = 1;
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}
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}
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return ret;
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}
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