250 lines
6.2 KiB
C
250 lines
6.2 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Mini kill/killall implementation for busybox
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*
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* Copyright (C) 1995, 1996 by Bruce Perens <bruce@pixar.com>.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include "busybox.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <unistd.h>
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#include <signal.h>
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#include <ctype.h>
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#include <unistd.h>
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static const int KILL = 0;
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static const int KILLALL = 1;
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struct signal_name {
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const char *name;
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int number;
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};
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const struct signal_name signames[] = {
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/* POSIX signals */
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{ "HUP", SIGHUP }, /* 1 */
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{ "INT", SIGINT }, /* 2 */
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{ "QUIT", SIGQUIT }, /* 3 */
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{ "ILL", SIGILL }, /* 4 */
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{ "ABRT", SIGABRT }, /* 6 */
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{ "FPE", SIGFPE }, /* 8 */
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{ "KILL", SIGKILL }, /* 9 */
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{ "SEGV", SIGSEGV }, /* 11 */
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{ "PIPE", SIGPIPE }, /* 13 */
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{ "ALRM", SIGALRM }, /* 14 */
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{ "TERM", SIGTERM }, /* 15 */
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{ "USR1", SIGUSR1 }, /* 10 (arm,i386,m68k,ppc), 30 (alpha,sparc*), 16 (mips) */
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{ "USR2", SIGUSR2 }, /* 12 (arm,i386,m68k,ppc), 31 (alpha,sparc*), 17 (mips) */
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{ "CHLD", SIGCHLD }, /* 17 (arm,i386,m68k,ppc), 20 (alpha,sparc*), 18 (mips) */
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{ "CONT", SIGCONT }, /* 18 (arm,i386,m68k,ppc), 19 (alpha,sparc*), 25 (mips) */
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{ "STOP", SIGSTOP }, /* 19 (arm,i386,m68k,ppc), 17 (alpha,sparc*), 23 (mips) */
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{ "TSTP", SIGTSTP }, /* 20 (arm,i386,m68k,ppc), 18 (alpha,sparc*), 24 (mips) */
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{ "TTIN", SIGTTIN }, /* 21 (arm,i386,m68k,ppc,alpha,sparc*), 26 (mips) */
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{ "TTOU", SIGTTOU }, /* 22 (arm,i386,m68k,ppc,alpha,sparc*), 27 (mips) */
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/* Miscellaneous other signals */
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#ifdef SIGTRAP
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{ "TRAP", SIGTRAP }, /* 5 */
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#endif
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#ifdef SIGIOT
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{ "IOT", SIGIOT }, /* 6, same as SIGABRT */
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#endif
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#ifdef SIGEMT
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{ "EMT", SIGEMT }, /* 7 (mips,alpha,sparc*) */
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#endif
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#ifdef SIGBUS
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{ "BUS", SIGBUS }, /* 7 (arm,i386,m68k,ppc), 10 (mips,alpha,sparc*) */
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#endif
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#ifdef SIGSYS
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{ "SYS", SIGSYS }, /* 12 (mips,alpha,sparc*) */
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#endif
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#ifdef SIGSTKFLT
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{ "STKFLT", SIGSTKFLT }, /* 16 (arm,i386,m68k,ppc) */
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#endif
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#ifdef SIGURG
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{ "URG", SIGURG }, /* 23 (arm,i386,m68k,ppc), 16 (alpha,sparc*), 21 (mips) */
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#endif
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#ifdef SIGIO
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{ "IO", SIGIO }, /* 29 (arm,i386,m68k,ppc), 23 (alpha,sparc*), 22 (mips) */
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#endif
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#ifdef SIGPOLL
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{ "POLL", SIGPOLL }, /* same as SIGIO */
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#endif
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#ifdef SIGCLD
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{ "CLD", SIGCLD }, /* same as SIGCHLD (mips) */
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#endif
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#ifdef SIGXCPU
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{ "XCPU", SIGXCPU }, /* 24 (arm,i386,m68k,ppc,alpha,sparc*), 30 (mips) */
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#endif
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#ifdef SIGXFSZ
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{ "XFSZ", SIGXFSZ }, /* 25 (arm,i386,m68k,ppc,alpha,sparc*), 31 (mips) */
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#endif
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#ifdef SIGVTALRM
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{ "VTALRM", SIGVTALRM }, /* 26 (arm,i386,m68k,ppc,alpha,sparc*), 28 (mips) */
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#endif
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#ifdef SIGPROF
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{ "PROF", SIGPROF }, /* 27 (arm,i386,m68k,ppc,alpha,sparc*), 29 (mips) */
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#endif
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#ifdef SIGPWR
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{ "PWR", SIGPWR }, /* 30 (arm,i386,m68k,ppc), 29 (alpha,sparc*), 19 (mips) */
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#endif
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#ifdef SIGINFO
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{ "INFO", SIGINFO }, /* 29 (alpha) */
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#endif
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#ifdef SIGLOST
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{ "LOST", SIGLOST }, /* 29 (arm,i386,m68k,ppc,sparc*) */
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#endif
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#ifdef SIGWINCH
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{ "WINCH", SIGWINCH }, /* 28 (arm,i386,m68k,ppc,alpha,sparc*), 20 (mips) */
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#endif
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#ifdef SIGUNUSED
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{ "UNUSED", SIGUNUSED }, /* 31 (arm,i386,m68k,ppc) */
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#endif
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{0, 0}
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};
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extern int kill_main(int argc, char **argv)
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{
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int whichApp, sig = SIGTERM;
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const char *appUsage;
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#ifdef BB_KILLALL
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/* Figure out what we are trying to do here */
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whichApp = (strcmp(applet_name, "killall") == 0)? KILLALL : KILL;
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appUsage = (whichApp == KILLALL)? killall_usage : kill_usage;
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#else
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whichApp = KILL;
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appUsage = kill_usage;
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#endif
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argc--;
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argv++;
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/* Parse any options */
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if (argc < 1)
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usage(appUsage);
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while (argc > 0 && **argv == '-') {
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while (*++(*argv)) {
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switch (**argv) {
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case 'l':
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{
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int col = 0;
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const struct signal_name *s = signames;
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while (s->name != 0) {
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col +=
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fprintf(stderr, "%2d) %-8s", s->number,
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(s++)->name);
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if (col > 60) {
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fprintf(stderr, "\n");
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col = 0;
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}
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}
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fprintf(stderr, "\n\n");
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return EXIT_SUCCESS;
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}
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break;
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case '-':
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usage(appUsage);
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default:
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{
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if (isdigit(**argv)) {
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sig = atoi(*argv);
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if (sig < 0 || sig >= NSIG)
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goto end;
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else {
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argc--;
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argv++;
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goto do_it_now;
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}
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} else {
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const struct signal_name *s = signames;
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while (s->name != 0) {
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if (strcasecmp(s->name, *argv) == 0) {
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sig = s->number;
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argc--;
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argv++;
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goto do_it_now;
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}
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s++;
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}
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if (s->name == 0)
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goto end;
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}
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}
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}
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argc--;
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argv++;
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}
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}
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do_it_now:
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if (whichApp == KILL) {
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/* Looks like they want to do a kill. Do that */
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while (--argc >= 0) {
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int pid;
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if (!isdigit(**argv))
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perror_msg_and_die( "Bad PID");
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pid = strtol(*argv, NULL, 0);
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if (kill(pid, sig) != 0)
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perror_msg_and_die( "Could not kill pid '%d'", pid);
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argv++;
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}
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}
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#ifdef BB_KILLALL
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else {
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int all_found = TRUE;
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pid_t myPid=getpid();
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/* Looks like they want to do a killall. Do that */
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while (--argc >= 0) {
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pid_t* pidList;
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pidList = find_pid_by_name( *argv);
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if (!pidList) {
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all_found = FALSE;
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error_msg( "%s: no process killed\n", *argv);
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}
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for(; pidList && *pidList!=0; pidList++) {
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if (*pidList==myPid)
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continue;
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if (kill(*pidList, sig) != 0)
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perror_msg_and_die( "Could not kill pid '%d'", *pidList);
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}
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/* Note that we don't bother to free the memory
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* allocated in find_pid_by_name(). It will be freed
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* upon exit, so we can save a byte or two */
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argv++;
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}
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if (all_found == FALSE)
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return EXIT_FAILURE;
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}
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#endif
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return EXIT_SUCCESS;
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end:
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error_msg_and_die( "bad signal name: %s\n", *argv);
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}
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