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/* $OpenBSD: kill.c,v 1.13 2015/10/10 21:15:25 doug Exp $ */ |
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/* $NetBSD: kill.c,v 1.11 1995/09/07 06:30:27 jtc Exp $ */ |
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/* |
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* Copyright (c) 1988, 1993, 1994 |
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* The Regents of the University of California. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. Neither the name of the University nor the names of its contributors |
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* may be used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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*/ |
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#include <ctype.h> |
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#include <err.h> |
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#include <errno.h> |
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#include <signal.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <unistd.h> |
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extern char *__progname; |
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void nosig(char *); |
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void printsignals(FILE *); |
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int signame_to_signum(char *); |
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void usage(void); |
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int |
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main(int argc, char *argv[]) |
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{ |
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int errors, numsig, pid; |
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char *ep; |
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if (pledge("stdio proc wpath cpath rpath", NULL) == -1) |
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err(1, "pledge"); |
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if (argc < 2) |
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usage(); |
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numsig = SIGTERM; |
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argc--, argv++; |
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if (!strcmp(*argv, "-l")) { |
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argc--, argv++; |
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if (argc > 0 && !strcmp(*argv, "--")) |
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argc--, argv++; |
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if (argc > 1) |
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usage(); |
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if (argc == 1) { |
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if (!isdigit((unsigned char)**argv)) |
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usage(); |
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numsig = strtol(*argv, &ep, 10); |
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if (*ep) |
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errx(1, "illegal signal number: %s", *argv); |
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if (numsig >= 128) |
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numsig -= 128; |
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if (numsig <= 0 || numsig >= NSIG) |
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nosig(*argv); |
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printf("%s\n", sys_signame[numsig]); |
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exit(0); |
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} |
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printsignals(stdout); |
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exit(0); |
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} |
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if (!strcmp(*argv, "-s")) { |
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argc--, argv++; |
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if (argc > 0 && !strcmp(*argv, "--")) |
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argc--, argv++; |
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if (argc < 1) { |
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warnx("option requires an argument -- s"); |
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usage(); |
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} |
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if (strcmp(*argv, "0")) { |
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if ((numsig = signame_to_signum(*argv)) < 0) |
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nosig(*argv); |
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} else |
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numsig = 0; |
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argc--, argv++; |
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} else if (**argv == '-') { |
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if (strcmp(*argv, "--")) { |
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++*argv; |
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if (isalpha((unsigned char)**argv)) { |
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if ((numsig = signame_to_signum(*argv)) < 0) |
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nosig(*argv); |
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} else if (isdigit((unsigned char)**argv)) { |
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numsig = strtol(*argv, &ep, 10); |
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if (*ep) |
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errx(1, "illegal signal number: %s", *argv); |
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if (numsig < 0 || numsig >= NSIG) |
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nosig(*argv); |
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} else |
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nosig(*argv); |
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} |
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argc--, argv++; |
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} |
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if (argc == 0) |
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usage(); |
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for (errors = 0; argc; argc--, argv++) { |
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pid = strtol(*argv, &ep, 10); |
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if (!**argv || *ep) { |
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warnx("illegal process id: %s", *argv); |
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errors = 1; |
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} else if (kill(pid, numsig) == -1) { |
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warn("%s", *argv); |
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errors = 1; |
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} |
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} |
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exit(errors); |
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} |
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int |
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signame_to_signum(char *sig) |
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{ |
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int n; |
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if (!strncasecmp(sig, "sig", 3)) |
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sig += 3; |
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for (n = 1; n < NSIG; n++) { |
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if (!strcasecmp(sys_signame[n], sig)) |
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return (n); |
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} |
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return (-1); |
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} |
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void |
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nosig(char *name) |
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{ |
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warnx("unknown signal %s; valid signals:", name); |
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printsignals(stderr); |
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exit(1); |
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} |
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void |
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printsignals(FILE *fp) |
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{ |
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int n; |
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for (n = 1; n < NSIG; n++) { |
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(void)fprintf(fp, "%s", sys_signame[n]); |
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if (n == (NSIG / 2) || n == (NSIG - 1)) |
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(void)fprintf(fp, "\n"); |
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else |
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(void)fprintf(fp, " "); |
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} |
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} |
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void |
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usage(void) |
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{ |
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(void)fprintf(stderr, "usage: %s [-s signal_name] pid ...\n", |
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__progname); |
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(void)fprintf(stderr, " %s -l [exit_status]\n", __progname); |
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(void)fprintf(stderr, " %s -signal_name pid ...\n", |
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__progname); |
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(void)fprintf(stderr, " %s -signal_number pid ...\n", |
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__progname); |
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exit(1); |
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} |