| 1 | /* $NetBSD: kill.c,v 1.23 2003/08/07 09:05:13 agc Exp $ */
|
|---|
| 2 |
|
|---|
| 3 | /*
|
|---|
| 4 | * Copyright (c) 1988, 1993, 1994
|
|---|
| 5 | * The Regents of the University of California. All rights reserved.
|
|---|
| 6 | *
|
|---|
| 7 | * Redistribution and use in source and binary forms, with or without
|
|---|
| 8 | * modification, are permitted provided that the following conditions
|
|---|
| 9 | * are met:
|
|---|
| 10 | * 1. Redistributions of source code must retain the above copyright
|
|---|
| 11 | * notice, this list of conditions and the following disclaimer.
|
|---|
| 12 | * 2. Redistributions in binary form must reproduce the above copyright
|
|---|
| 13 | * notice, this list of conditions and the following disclaimer in the
|
|---|
| 14 | * documentation and/or other materials provided with the distribution.
|
|---|
| 15 | * 3. Neither the name of the University nor the names of its contributors
|
|---|
| 16 | * may be used to endorse or promote products derived from this software
|
|---|
| 17 | * without specific prior written permission.
|
|---|
| 18 | *
|
|---|
| 19 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|---|
| 20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|---|
| 21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|---|
| 22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|---|
| 23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|---|
| 24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|---|
| 25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|---|
| 26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|---|
| 27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|---|
| 28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|---|
| 29 | * SUCH DAMAGE.
|
|---|
| 30 | */
|
|---|
| 31 |
|
|---|
| 32 | #include <sys/cdefs.h>
|
|---|
| 33 | #if !defined(lint) && !defined(SHELL)
|
|---|
| 34 | __COPYRIGHT("@(#) Copyright (c) 1988, 1993, 1994\n\
|
|---|
| 35 | The Regents of the University of California. All rights reserved.\n");
|
|---|
| 36 | #endif /* not lint */
|
|---|
| 37 |
|
|---|
| 38 | #ifndef lint
|
|---|
| 39 | #if 0
|
|---|
| 40 | static char sccsid[] = "@(#)kill.c 8.4 (Berkeley) 4/28/95";
|
|---|
| 41 | #else
|
|---|
| 42 | __RCSID("$NetBSD: kill.c,v 1.23 2003/08/07 09:05:13 agc Exp $");
|
|---|
| 43 | #endif
|
|---|
| 44 | #endif /* not lint */
|
|---|
| 45 |
|
|---|
| 46 | #include <ctype.h>
|
|---|
| 47 | #include <err.h>
|
|---|
| 48 | #include <errno.h>
|
|---|
| 49 | #include <signal.h>
|
|---|
| 50 | #include <stdio.h>
|
|---|
| 51 | #include <stdlib.h>
|
|---|
| 52 | #include <string.h>
|
|---|
| 53 | #include <termios.h>
|
|---|
| 54 | #include <unistd.h>
|
|---|
| 55 | #include <locale.h>
|
|---|
| 56 | #include <sys/ioctl.h>
|
|---|
| 57 |
|
|---|
| 58 | #ifndef HAVE_SYS_SIGNAME
|
|---|
| 59 | extern void init_sys_signame(void);
|
|---|
| 60 | extern char sys_signame[NSIG][16];
|
|---|
| 61 | #endif
|
|---|
| 62 |
|
|---|
| 63 | #ifdef SHELL /* sh (aka ash) builtin */
|
|---|
| 64 | #define main killcmd
|
|---|
| 65 | #include "bltin/bltin.h"
|
|---|
| 66 | #endif /* SHELL */
|
|---|
| 67 |
|
|---|
| 68 | static void nosig(char *);
|
|---|
| 69 | static void printsignals(FILE *);
|
|---|
| 70 | static int signame_to_signum(char *);
|
|---|
| 71 | static void usage(void);
|
|---|
| 72 | int main(int, char *[]);
|
|---|
| 73 |
|
|---|
| 74 | int
|
|---|
| 75 | main(int argc, char *argv[])
|
|---|
| 76 | {
|
|---|
| 77 | int errors, numsig, pid;
|
|---|
| 78 | char *ep;
|
|---|
| 79 |
|
|---|
| 80 | setprogname(argv[0]);
|
|---|
| 81 | setlocale(LC_ALL, "");
|
|---|
| 82 | if (argc < 2)
|
|---|
| 83 | usage();
|
|---|
| 84 |
|
|---|
| 85 | numsig = SIGTERM;
|
|---|
| 86 |
|
|---|
| 87 | argc--, argv++;
|
|---|
| 88 | if (strcmp(*argv, "-l") == 0) {
|
|---|
| 89 | argc--, argv++;
|
|---|
| 90 | if (argc > 1)
|
|---|
| 91 | usage();
|
|---|
| 92 | if (argc == 1) {
|
|---|
| 93 | if (isdigit((unsigned char)**argv) == 0)
|
|---|
| 94 | usage();
|
|---|
| 95 | numsig = strtol(*argv, &ep, 10);
|
|---|
| 96 | if (*ep != '\0') {
|
|---|
| 97 | errx(EXIT_FAILURE, "illegal signal number: %s",
|
|---|
| 98 | *argv);
|
|---|
| 99 | /* NOTREACHED */
|
|---|
| 100 | }
|
|---|
| 101 | if (numsig >= 128)
|
|---|
| 102 | numsig -= 128;
|
|---|
| 103 | if (numsig <= 0 || numsig >= NSIG)
|
|---|
| 104 | nosig(*argv);
|
|---|
| 105 | #ifndef HAVE_SYS_SIGNAME
|
|---|
| 106 | init_sys_signame();
|
|---|
| 107 | #endif
|
|---|
| 108 | printf("%s\n", sys_signame[numsig]);
|
|---|
| 109 | exit(0);
|
|---|
| 110 | }
|
|---|
| 111 | printsignals(stdout);
|
|---|
| 112 | exit(0);
|
|---|
| 113 | }
|
|---|
| 114 |
|
|---|
| 115 | if (!strcmp(*argv, "-s")) {
|
|---|
| 116 | argc--, argv++;
|
|---|
| 117 | if (argc < 1) {
|
|---|
| 118 | warnx("option requires an argument -- s");
|
|---|
| 119 | usage();
|
|---|
| 120 | }
|
|---|
| 121 | if (strcmp(*argv, "0")) {
|
|---|
| 122 | if ((numsig = signame_to_signum(*argv)) < 0)
|
|---|
| 123 | nosig(*argv);
|
|---|
| 124 | } else
|
|---|
| 125 | numsig = 0;
|
|---|
| 126 | argc--, argv++;
|
|---|
| 127 | } else if (**argv == '-') {
|
|---|
| 128 | ++*argv;
|
|---|
| 129 | if (isalpha((unsigned char)**argv)) {
|
|---|
| 130 | if ((numsig = signame_to_signum(*argv)) < 0)
|
|---|
| 131 | nosig(*argv);
|
|---|
| 132 | } else if (isdigit((unsigned char)**argv)) {
|
|---|
| 133 | numsig = strtol(*argv, &ep, 10);
|
|---|
| 134 | if (!*argv || *ep) {
|
|---|
| 135 | errx(EXIT_FAILURE, "illegal signal number: %s",
|
|---|
| 136 | *argv);
|
|---|
| 137 | /* NOTREACHED */
|
|---|
| 138 | }
|
|---|
| 139 | if (numsig < 0 || numsig >= NSIG)
|
|---|
| 140 | nosig(*argv);
|
|---|
| 141 | } else
|
|---|
| 142 | nosig(*argv);
|
|---|
| 143 | argc--, argv++;
|
|---|
| 144 | }
|
|---|
| 145 |
|
|---|
| 146 | if (argc == 0)
|
|---|
| 147 | usage();
|
|---|
| 148 |
|
|---|
| 149 | for (errors = 0; argc; argc--, argv++) {
|
|---|
| 150 | #ifdef SHELL
|
|---|
| 151 | extern int getjobpgrp(const char *);
|
|---|
| 152 | if (*argv[0] == '%') {
|
|---|
| 153 | pid = getjobpgrp(*argv);
|
|---|
| 154 | if (pid == 0) {
|
|---|
| 155 | warnx("illegal job id: %s", *argv);
|
|---|
| 156 | errors = 1;
|
|---|
| 157 | continue;
|
|---|
| 158 | }
|
|---|
| 159 | } else
|
|---|
| 160 | #endif
|
|---|
| 161 | {
|
|---|
| 162 | pid = strtol(*argv, &ep, 10);
|
|---|
| 163 | if (!**argv || *ep) {
|
|---|
| 164 | warnx("illegal process id: %s", *argv);
|
|---|
| 165 | errors = 1;
|
|---|
| 166 | continue;
|
|---|
| 167 | }
|
|---|
| 168 | }
|
|---|
| 169 | if (kill(pid, numsig) == -1) {
|
|---|
| 170 | warn("%s", *argv);
|
|---|
| 171 | errors = 1;
|
|---|
| 172 | }
|
|---|
| 173 | #ifdef SHELL
|
|---|
| 174 | /* Wakeup the process if it was suspended, so it can
|
|---|
| 175 | exit without an explicit 'fg'. */
|
|---|
| 176 | if (numsig == SIGTERM || numsig == SIGHUP)
|
|---|
| 177 | kill(pid, SIGCONT);
|
|---|
| 178 | #endif
|
|---|
| 179 | }
|
|---|
| 180 |
|
|---|
| 181 | exit(errors);
|
|---|
| 182 | /* NOTREACHED */
|
|---|
| 183 | }
|
|---|
| 184 |
|
|---|
| 185 | static int
|
|---|
| 186 | signame_to_signum(char *sig)
|
|---|
| 187 | {
|
|---|
| 188 | int n;
|
|---|
| 189 | #ifndef HAVE_SYS_SIGNAME
|
|---|
| 190 | init_sys_signame();
|
|---|
| 191 | #endif
|
|---|
| 192 | if (strncasecmp(sig, "sig", 3) == 0)
|
|---|
| 193 | sig += 3;
|
|---|
| 194 | for (n = 1; n < NSIG; n++) {
|
|---|
| 195 | if (!strcasecmp(sys_signame[n], sig))
|
|---|
| 196 | return (n);
|
|---|
| 197 | }
|
|---|
| 198 | return (-1);
|
|---|
| 199 | }
|
|---|
| 200 |
|
|---|
| 201 | static void
|
|---|
| 202 | nosig(char *name)
|
|---|
| 203 | {
|
|---|
| 204 |
|
|---|
| 205 | warnx("unknown signal %s; valid signals:", name);
|
|---|
| 206 | printsignals(stderr);
|
|---|
| 207 | exit(1);
|
|---|
| 208 | /* NOTREACHED */
|
|---|
| 209 | }
|
|---|
| 210 |
|
|---|
| 211 | static void
|
|---|
| 212 | printsignals(FILE *fp)
|
|---|
| 213 | {
|
|---|
| 214 | int sig;
|
|---|
| 215 | int len, nl;
|
|---|
| 216 | const char *name;
|
|---|
| 217 | int termwidth = 80;
|
|---|
| 218 |
|
|---|
| 219 | #ifdef TIOCGWINSZ
|
|---|
| 220 | if (isatty(fileno(fp))) {
|
|---|
| 221 | struct winsize win;
|
|---|
| 222 | if (ioctl(fileno(fp), TIOCGWINSZ, &win) == 0 && win.ws_col > 0)
|
|---|
| 223 | termwidth = win.ws_col;
|
|---|
| 224 | }
|
|---|
| 225 | #else
|
|---|
| 226 | #ifndef _MSC_VER
|
|---|
| 227 | #warning TIOCGWINSZ is not present.
|
|---|
| 228 | #endif
|
|---|
| 229 | #endif
|
|---|
| 230 | #ifndef HAVE_SYS_SIGNAME
|
|---|
| 231 | init_sys_signame();
|
|---|
| 232 | #endif
|
|---|
| 233 |
|
|---|
| 234 | for (len = 0, sig = 1; sig < NSIG; sig++) {
|
|---|
| 235 | name = sys_signame[sig];
|
|---|
| 236 | nl = 1 + strlen(name);
|
|---|
| 237 |
|
|---|
| 238 | if (len + nl >= termwidth) {
|
|---|
| 239 | fprintf(fp, "\n");
|
|---|
| 240 | len = 0;
|
|---|
| 241 | } else
|
|---|
| 242 | if (len != 0)
|
|---|
| 243 | fprintf(fp, " ");
|
|---|
| 244 | len += nl;
|
|---|
| 245 | fprintf(fp, "%s", name);
|
|---|
| 246 | }
|
|---|
| 247 | if (len != 0)
|
|---|
| 248 | fprintf(fp, "\n");
|
|---|
| 249 | }
|
|---|
| 250 |
|
|---|
| 251 | static void
|
|---|
| 252 | usage(void)
|
|---|
| 253 | {
|
|---|
| 254 |
|
|---|
| 255 | fprintf(stderr, "usage: %s [-s signal_name] pid ...\n"
|
|---|
| 256 | " %s -l [exit_status]\n"
|
|---|
| 257 | " %s -signal_name pid ...\n"
|
|---|
| 258 | " %s -signal_number pid ...\n",
|
|---|
| 259 | getprogname(), getprogname(), getprogname(), getprogname());
|
|---|
| 260 | exit(1);
|
|---|
| 261 | /* NOTREACHED */
|
|---|
| 262 | }
|
|---|
