Annotation of prex-old/usr/bin/kill/kill.c, Revision 1.1
1.1 ! nbrk 1: /*
! 2: * Copyright (c) 1988, 1993, 1994
! 3: * The Regents of the University of California. All rights reserved.
! 4: *
! 5: * Redistribution and use in source and binary forms, with or without
! 6: * modification, are permitted provided that the following conditions
! 7: * are met:
! 8: * 1. Redistributions of source code must retain the above copyright
! 9: * notice, this list of conditions and the following disclaimer.
! 10: * 2. Redistributions in binary form must reproduce the above copyright
! 11: * notice, this list of conditions and the following disclaimer in the
! 12: * documentation and/or other materials provided with the distribution.
! 13: * 3. Neither the name of the University nor the names of its contributors
! 14: * may be used to endorse or promote products derived from this software
! 15: * without specific prior written permission.
! 16: *
! 17: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 18: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 19: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 20: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 21: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 22: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 23: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 24: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 25: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 26: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 27: * SUCH DAMAGE.
! 28: */
! 29:
! 30: #include <ctype.h>
! 31: #include <err.h>
! 32: #include <errno.h>
! 33: #include <signal.h>
! 34: #include <stdio.h>
! 35: #include <stdlib.h>
! 36: #include <string.h>
! 37:
! 38: #ifdef CMDBOX
! 39: #define main(argc, argv) kill_main(argc, argv)
! 40: #endif
! 41:
! 42: static void nosig(char *);
! 43: static void printsignals(FILE *);
! 44: static int signame_to_signum(char *);
! 45: static void usage(void);
! 46:
! 47: int
! 48: main(int argc, char *argv[])
! 49: {
! 50: int errors, numsig, pid;
! 51: char *ep;
! 52:
! 53: if (argc < 2)
! 54: usage();
! 55:
! 56: numsig = SIGTERM;
! 57:
! 58: argc--, argv++;
! 59: if (!strcmp(*argv, "-l")) {
! 60: argc--, argv++;
! 61: if (argc > 1)
! 62: usage();
! 63: if (argc == 1) {
! 64: if (isdigit((unsigned char)**argv) == 0)
! 65: usage();
! 66: numsig = strtol(*argv, &ep, 10);
! 67: if (!*argv || *ep)
! 68: errx(1, "illegal signal number: %s", *argv);
! 69: if (numsig >= 128)
! 70: numsig -= 128;
! 71: if (numsig <= 0 || numsig >= NSIG)
! 72: nosig(*argv);
! 73: printf("%s\n", sys_signame[numsig]);
! 74: exit(0);
! 75: }
! 76: printsignals(stdout);
! 77: exit(0);
! 78: }
! 79:
! 80: if (!strcmp(*argv, "-s")) {
! 81: argc--, argv++;
! 82: if (argc < 1) {
! 83: warnx("option requires an argument -- s");
! 84: usage();
! 85: }
! 86: if (strcmp(*argv, "0")) {
! 87: if ((numsig = signame_to_signum(*argv)) < 0)
! 88: nosig(*argv);
! 89: } else
! 90: numsig = 0;
! 91: argc--, argv++;
! 92: } else if (**argv == '-') {
! 93: ++*argv;
! 94: if (isalpha(**argv)) {
! 95: if ((numsig = signame_to_signum(*argv)) < 0)
! 96: nosig(*argv);
! 97: } else if (isdigit(**argv)) {
! 98: numsig = strtol(*argv, &ep, 10);
! 99: if (!*argv || *ep)
! 100: errx(1, "illegal signal number: %s", *argv);
! 101: if (numsig <= 0 || numsig >= NSIG)
! 102: nosig(*argv);
! 103: } else
! 104: nosig(*argv);
! 105: argc--, argv++;
! 106: }
! 107:
! 108: if (argc == 0)
! 109: usage();
! 110:
! 111: for (errors = 0; argc; argc--, argv++) {
! 112: pid = strtol(*argv, &ep, 10);
! 113: if (!*argv || *ep) {
! 114: warnx("illegal process id: %s", *argv);
! 115: errors = 1;
! 116: } else if (kill(pid, numsig) == -1) {
! 117: warn("%s", *argv);
! 118: errors = 1;
! 119: }
! 120: }
! 121:
! 122: exit(errors);
! 123: }
! 124:
! 125: static int
! 126: signame_to_signum(sig)
! 127: char *sig;
! 128: {
! 129: int n;
! 130:
! 131: if (!strncasecmp(sig, "sig", 3))
! 132: sig += 3;
! 133: for (n = 1; n < NSIG; n++) {
! 134: if (!strcasecmp(sys_signame[n], sig))
! 135: return (n);
! 136: }
! 137: return (-1);
! 138: }
! 139:
! 140: static void
! 141: nosig(name)
! 142: char *name;
! 143: {
! 144:
! 145: warnx("unknown signal %s; valid signals:", name);
! 146: printsignals(stderr);
! 147: exit(1);
! 148: /* NOTREACHED */
! 149: }
! 150:
! 151: static void
! 152: printsignals(fp)
! 153: FILE *fp;
! 154: {
! 155: int n;
! 156:
! 157: for (n = 1; n < NSIG; n++) {
! 158: (void)fprintf(fp, "%s", sys_signame[n]);
! 159: if (n == (NSIG / 2) || n == (NSIG - 1))
! 160: (void)fprintf(fp, "\n");
! 161: else
! 162: (void)fprintf(fp, " ");
! 163: }
! 164: }
! 165:
! 166: static void
! 167: usage(void)
! 168: {
! 169:
! 170: fprintf(stderr, "usage: kill [-s signal_name] pid ...\n"
! 171: " kill -l [exit_status]\n"
! 172: " kill -signal_name pid ...\n"
! 173: " kill -signal_number pid ...\n");
! 174: exit(1);
! 175: /* NOTREACHED */
! 176: }
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