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/* $NetBSD: kill.c,v 1.23 2003/08/07 09:05:13 agc Exp $ */
/*
* Copyright (c) 1988, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#if 0
#if !defined(lint) && !defined(SHELL)
__COPYRIGHT("@(#) Copyright (c) 1988, 1993, 1994\n\
The Regents of the University of California. All rights reserved.\n");
#endif /* not lint */
#ifndef lint
static char sccsid[] = "@(#)kill.c 8.4 (Berkeley) 4/28/95";
#else
__RCSID("$NetBSD: kill.c,v 1.23 2003/08/07 09:05:13 agc Exp $");
#endif /* not lint */
#endif
#include <ctype.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "shtypes.h"
#include "jobs.h"
#include "error.h"
#include "shinstance.h"
static int nosig(shinstance *, char *);
static void printsignals(shinstance *, struct output *);
static int signame_to_signum(char *);
static int usage(shinstance *psh);
int
killcmd(shinstance *psh, int argc, char *argv[])
{
int errors, numsig;
char *ep;
if (argc < 2)
return usage(psh);
numsig = SIGTERM;
argc--, argv++;
if (strcmp(*argv, "-l") == 0) {
argc--, argv++;
if (argc > 1)
return usage(psh);
if (argc == 1) {
if (isdigit((unsigned char)**argv) == 0)
return usage(psh);
numsig = strtol(*argv, &ep, 10);
if (*ep != '\0') {
sh_errx(psh, EXIT_FAILURE, "illegal signal number: %s",
*argv);
/* NOTREACHED */
}
if (numsig >= 128)
numsig -= 128;
if (numsig <= 0 || numsig >= NSIG)
return nosig(psh, *argv);
outfmt(psh->out1, "%s\n", sys_signame[numsig]);
//sh_exit(psh, 0);
return 0;
}
printsignals(psh, psh->out1);
//sh_exit(psh, 0);
return 0;
}
if (!strcmp(*argv, "-s")) {
argc--, argv++;
if (argc < 1) {
sh_warnx(psh, "option requires an argument -- s");
return usage(psh);
}
if (strcmp(*argv, "0")) {
if ((numsig = signame_to_signum(*argv)) < 0)
return nosig(psh, *argv);
} else
numsig = 0;
argc--, argv++;
} else if (**argv == '-') {
++*argv;
if (isalpha((unsigned char)**argv)) {
if ((numsig = signame_to_signum(*argv)) < 0)
return nosig(psh, *argv);
} else if (isdigit((unsigned char)**argv)) {
numsig = strtol(*argv, &ep, 10);
if (!*argv || *ep) {
sh_errx(psh, EXIT_FAILURE, "illegal signal number: %s",
*argv);
/* NOTREACHED */
}
if (numsig < 0 || numsig >= NSIG)
return nosig(psh, *argv);
} else
return nosig(psh, *argv);
argc--, argv++;
}
if (argc == 0)
return usage(psh);
for (errors = 0; argc; argc--, argv++) {
const char * const strpid = argv[0];
shpid pid;
if (*strpid == '%') {
pid = getjobpgrp(psh, strpid);
if (pid == 0) {
sh_warnx(psh, "illegal job id: %s", strpid);
errors = 1;
continue;
}
} else {
#if !defined(SH_FORKED_MODE) && defined(_MSC_VER)
pid = _strtoi64(strpid, &ep, 10);
#elif !defined(SH_FORKED_MODE)
pid = strtoll(strpid, &ep, 10);
#else
pid = strtol(strpid, &ep, 10);
#endif
if (!*strpid || *ep) {
sh_warnx(psh, "illegal process id: %s", strpid);
errors = 1;
continue;
}
}
if (sh_kill(psh, pid, numsig) == -1) {
sh_warn(psh, "%s", strpid);
errors = 1;
}
/* Wakeup the process if it was suspended, so it can
exit without an explicit 'fg'. */
if (numsig == SIGTERM || numsig == SIGHUP)
sh_kill(psh, pid, SIGCONT);
}
//sh_exit(psh, errors);
///* NOTREACHED */
return errors;
}
static int
signame_to_signum(char *sig)
{
int n;
if (strncasecmp(sig, "sig", 3) == 0)
sig += 3;
for (n = 1; n < NSIG; n++) {
if (!strcasecmp(sys_signame[n], sig))
return (n);
}
return (-1);
}
static int
nosig(shinstance *psh, char *name)
{
sh_warnx(psh, "unknown signal %s; valid signals:", name);
printsignals(psh, psh->out2);
//sh_exit(psh, 1);
///* NOTREACHED */
return 1;
}
static void
printsignals(shinstance *psh, struct output *out)
{
int sig;
size_t len, nl;
const char *name;
unsigned termwidth = 80;
if (shfile_isatty(&psh->fdtab, out->fd)) {
sh_winsize win;
if (shfile_ioctl(&psh->fdtab, out->fd, TIOCGWINSZ, &win) == 0 && win.ws_col > 0)
termwidth = win.ws_col;
}
for (len = 0, sig = 1; sig < NSIG; sig++) {
name = sys_signame[sig];
nl = 1 + strlen(name);
if (len + nl >= termwidth) {
outfmt(out, "\n");
len = 0;
} else if (len != 0)
outfmt(out, " ");
len += nl;
outfmt(out, "%s", name);
}
if (len != 0)
outfmt(out, "\n");
}
static int
usage(shinstance *psh)
{
outfmt(psh->out2,
"usage: %s [-s signal_name] pid ...\n"
" %s -l [exit_status]\n"
" %s -signal_name pid ...\n"
" %s -signal_number pid ...\n",
psh->commandname, psh->commandname, psh->commandname, psh->commandname);
//sh_exit(psh, 1);
///* NOTREACHED */
return 1;
}
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