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