/* vi: set sw=4 ts=4: */ /* * Mini kill/killall implementation for busybox * * Copyright (C) 1995, 1996 by Bruce Perens . * * 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 #include #include #include #include #include #include #include #include "busybox.h" static const int KILL = 0; static const int KILLALL = 1; struct signal_name { const char *name; int number; }; static 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; #ifdef BB_KILLALL /* Figure out what we are trying to do here */ whichApp = (strcmp(applet_name, "killall") == 0)? KILLALL : KILL; #else whichApp = KILL; #endif argc--; argv++; /* Parse any options */ if (argc < 1) show_usage(); 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 '-': show_usage(); 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); }