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