Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Mini kill implementation for busybox |
| 3 | * |
| 4 | * Copyright (C) 1995, 1996 by Bruce Perens <bruce@pixar.com>. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | * General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | * |
| 20 | */ |
| 21 | |
| 22 | |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 23 | #include "internal.h" |
| 24 | #include <stdio.h> |
| 25 | #include <stdlib.h> |
| 26 | #include <unistd.h> |
| 27 | #include <signal.h> |
Eric Andersen | a709317 | 1999-10-23 05:42:08 +0000 | [diff] [blame] | 28 | #include <ctype.h> |
Eric Andersen | abc0f4f | 1999-12-08 23:19:36 +0000 | [diff] [blame] | 29 | #include <sys/stat.h> |
| 30 | #include <unistd.h> |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 31 | |
Eric Andersen | abc0f4f | 1999-12-08 23:19:36 +0000 | [diff] [blame] | 32 | static const char* kill_usage = "kill [-signal] process-id [process-id ...]\n\n" |
| 33 | "Send a signal (default is SIGTERM) to the specified process(es).\n\n" |
| 34 | "Options:\n" |
| 35 | "\t-l\tList all signal names and numbers.\n\n"; |
| 36 | |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 37 | |
| 38 | struct signal_name { |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 39 | const char *name; |
| 40 | int number; |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 41 | }; |
| 42 | |
| 43 | const struct signal_name signames[] = { |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 44 | {"HUP", SIGHUP}, |
| 45 | {"INT", SIGINT}, |
| 46 | {"QUIT", SIGQUIT}, |
| 47 | {"ILL", SIGILL}, |
| 48 | {"TRAP", SIGTRAP}, |
| 49 | {"ABRT", SIGABRT}, |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 50 | #ifndef __alpha__ |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 51 | {"IOT", SIGIOT}, |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 52 | #endif |
Eric Andersen | e77ae3a | 1999-10-19 20:03:34 +0000 | [diff] [blame] | 53 | #if defined(__sparc__) || defined(__alpha__) |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 54 | {"EMT", SIGEMT}, |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 55 | #else |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 56 | {"BUS", SIGBUS}, |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 57 | #endif |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 58 | {"FPE", SIGFPE}, |
| 59 | {"KILL", SIGKILL}, |
Eric Andersen | e77ae3a | 1999-10-19 20:03:34 +0000 | [diff] [blame] | 60 | #if defined(__sparc__) || defined(__alpha__) |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 61 | {"BUS", SIGBUS}, |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 62 | #else |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 63 | {"USR1", SIGUSR1}, |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 64 | #endif |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 65 | {"SEGV", SIGSEGV}, |
Eric Andersen | e77ae3a | 1999-10-19 20:03:34 +0000 | [diff] [blame] | 66 | #if defined(__sparc__) || defined(__alpha__) |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 67 | {"SYS", SIGSYS}, |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 68 | #else |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 69 | {"USR2", SIGUSR2}, |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 70 | #endif |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 71 | {"PIPE", SIGPIPE}, |
| 72 | {"ALRM", SIGALRM}, |
| 73 | {"TERM", SIGTERM}, |
Eric Andersen | e77ae3a | 1999-10-19 20:03:34 +0000 | [diff] [blame] | 74 | #if defined(__sparc__) || defined(__alpha__) |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 75 | {"URG", SIGURG}, |
| 76 | {"STOP", SIGSTOP}, |
| 77 | {"TSTP", SIGTSTP}, |
| 78 | {"CONT", SIGCONT}, |
| 79 | {"CHLD", SIGCHLD}, |
| 80 | {"TTIN", SIGTTIN}, |
| 81 | {"TTOU", SIGTTOU}, |
| 82 | {"IO", SIGIO}, |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 83 | # ifndef __alpha__ |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 84 | {"POLL", SIGIO}, |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 85 | # endif |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 86 | {"XCPU", SIGXCPU}, |
| 87 | {"XFSZ", SIGXFSZ}, |
| 88 | {"VTALRM", SIGVTALRM}, |
| 89 | {"PROF", SIGPROF}, |
| 90 | {"WINCH", SIGWINCH}, |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 91 | # ifdef __alpha__ |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 92 | {"INFO", SIGINFO}, |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 93 | # else |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 94 | {"LOST", SIGLOST}, |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 95 | # endif |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 96 | {"USR1", SIGUSR1}, |
| 97 | {"USR2", SIGUSR2}, |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 98 | #else |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 99 | {"STKFLT", SIGSTKFLT}, |
| 100 | {"CHLD", SIGCHLD}, |
| 101 | {"CONT", SIGCONT}, |
| 102 | {"STOP", SIGSTOP}, |
| 103 | {"TSTP", SIGTSTP}, |
| 104 | {"TTIN", SIGTTIN}, |
| 105 | {"TTOU", SIGTTOU}, |
| 106 | {"URG", SIGURG}, |
| 107 | {"XCPU", SIGXCPU}, |
| 108 | {"XFSZ", SIGXFSZ}, |
| 109 | {"VTALRM", SIGVTALRM}, |
| 110 | {"PROF", SIGPROF}, |
| 111 | {"WINCH", SIGWINCH}, |
| 112 | {"IO", SIGIO}, |
| 113 | {"POLL", SIGPOLL}, |
| 114 | {"PWR", SIGPWR}, |
| 115 | {"UNUSED", SIGUNUSED}, |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 116 | #endif |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 117 | {0, 0} |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 118 | }; |
| 119 | |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 120 | extern int kill_main (int argc, char **argv) |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 121 | { |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 122 | int sig = SIGTERM; |
Eric Andersen | abc0f4f | 1999-12-08 23:19:36 +0000 | [diff] [blame] | 123 | |
| 124 | argc--; |
| 125 | argv++; |
| 126 | /* Parse any options */ |
| 127 | if (argc < 1) |
| 128 | usage(kill_usage); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 129 | |
Eric Andersen | abc0f4f | 1999-12-08 23:19:36 +0000 | [diff] [blame] | 130 | while (argc > 0 && **argv == '-') { |
| 131 | while (*++(*argv)) { |
| 132 | switch (**argv) { |
| 133 | case 'l': |
| 134 | { |
| 135 | int col=0; |
| 136 | const struct signal_name *s = signames; |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 137 | |
Eric Andersen | abc0f4f | 1999-12-08 23:19:36 +0000 | [diff] [blame] | 138 | while (s->name != 0) { |
| 139 | col+=fprintf(stderr, "%2d) %-8s", s->number, (s++)->name); |
| 140 | if (col>60) { |
| 141 | fprintf(stderr, "\n"); |
| 142 | col=0; |
| 143 | } |
| 144 | } |
| 145 | fprintf(stderr, "\n\n"); |
| 146 | exit( TRUE); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 147 | } |
Eric Andersen | abc0f4f | 1999-12-08 23:19:36 +0000 | [diff] [blame] | 148 | break; |
| 149 | case '-': |
| 150 | usage(kill_usage); |
| 151 | default: |
| 152 | { |
| 153 | if (isdigit( **argv)) { |
| 154 | sig = atoi (*argv); |
| 155 | if (sig < 0 || sig >= NSIG) |
| 156 | goto end; |
| 157 | else { |
| 158 | argc--; |
| 159 | argv++; |
| 160 | goto do_it_now; |
| 161 | } |
| 162 | } |
| 163 | else { |
| 164 | const struct signal_name *s = signames; |
| 165 | while (s->name != 0) { |
| 166 | if (strcasecmp (s->name, *argv) == 0) { |
| 167 | sig = s->number; |
| 168 | argc--; |
| 169 | argv++; |
| 170 | goto do_it_now; |
| 171 | } |
| 172 | s++; |
| 173 | } |
| 174 | if (s->name == 0) |
| 175 | goto end; |
| 176 | } |
| 177 | } |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 178 | } |
Eric Andersen | abc0f4f | 1999-12-08 23:19:36 +0000 | [diff] [blame] | 179 | argc--; |
| 180 | argv++; |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 181 | } |
Eric Andersen | a709317 | 1999-10-23 05:42:08 +0000 | [diff] [blame] | 182 | } |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 183 | |
Eric Andersen | abc0f4f | 1999-12-08 23:19:36 +0000 | [diff] [blame] | 184 | do_it_now: |
| 185 | |
| 186 | while (argc >= 1) { |
| 187 | int pid; |
| 188 | struct stat statbuf; |
| 189 | char pidpath[20]="/proc/"; |
| 190 | |
| 191 | if (! isdigit( **argv)) { |
| 192 | fprintf(stderr, "bad PID: %s\n", *argv); |
| 193 | exit( FALSE); |
| 194 | } |
| 195 | pid = atoi (*argv); |
| 196 | snprintf(pidpath, 20, "/proc/%s/stat", *argv); |
| 197 | if (stat( pidpath, &statbuf)!=0) { |
| 198 | fprintf(stderr, "kill: (%d) - No such pid\n", pid); |
| 199 | exit( FALSE); |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 200 | } |
Eric Andersen | abc0f4f | 1999-12-08 23:19:36 +0000 | [diff] [blame] | 201 | if (kill (pid, sig) != 0) { |
| 202 | perror (*argv); |
| 203 | exit ( FALSE); |
| 204 | } |
| 205 | argv++; |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 206 | } |
Eric Andersen | abc0f4f | 1999-12-08 23:19:36 +0000 | [diff] [blame] | 207 | exit ( TRUE); |
| 208 | |
Eric Andersen | a709317 | 1999-10-23 05:42:08 +0000 | [diff] [blame] | 209 | |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 210 | end: |
Eric Andersen | a709317 | 1999-10-23 05:42:08 +0000 | [diff] [blame] | 211 | fprintf(stderr, "bad signal name: %s\n", *argv); |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 212 | exit (TRUE); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 213 | } |
Eric Andersen | a709317 | 1999-10-23 05:42:08 +0000 | [diff] [blame] | 214 | |
| 215 | |