+/* vi: set sw=4 ts=4: */
/*
- * Mini kill implementation for busybox
+ * Mini kill/killall implementation for busybox
*
* Copyright (C) 1995, 1996 by Bruce Perens <bruce@pixar.com>.
*
*/
-#include "internal.h"
#include <stdio.h>
#include <stdlib.h>
+#include <errno.h>
#include <unistd.h>
#include <signal.h>
#include <ctype.h>
-#include <sys/stat.h>
+#include <string.h>
#include <unistd.h>
+#include "busybox.h"
-static const char* kill_usage = "kill [-signal] process-id [process-id ...]\n\n"
-"Send a signal (default is SIGTERM) to the specified process(es).\n\n"
-"Options:\n"
-"\t-l\tList all signal names and numbers.\n\n";
-
+static const int KILL = 0;
+static const int KILLALL = 1;
struct signal_name {
- const char *name;
- int number;
+ const char *name;
+ int number;
};
-const struct signal_name signames[] = {
- {"HUP", SIGHUP},
- {"INT", SIGINT},
- {"QUIT", SIGQUIT},
- {"ILL", SIGILL},
- {"TRAP", SIGTRAP},
- {"ABRT", SIGABRT},
-#ifndef __alpha__
- {"IOT", SIGIOT},
-#endif
-#if defined(__sparc__) || defined(__alpha__)
- {"EMT", SIGEMT},
-#else
- {"BUS", SIGBUS},
+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
- {"FPE", SIGFPE},
- {"KILL", SIGKILL},
-#if defined(__sparc__) || defined(__alpha__)
- {"BUS", SIGBUS},
-#else
- {"USR1", SIGUSR1},
+#ifdef SIGIOT
+ { "IOT", SIGIOT }, /* 6, same as SIGABRT */
#endif
- {"SEGV", SIGSEGV},
-#if defined(__sparc__) || defined(__alpha__)
- {"SYS", SIGSYS},
-#else
- {"USR2", SIGUSR2},
-#endif
- {"PIPE", SIGPIPE},
- {"ALRM", SIGALRM},
- {"TERM", SIGTERM},
-#if defined(__sparc__) || defined(__alpha__)
- {"URG", SIGURG},
- {"STOP", SIGSTOP},
- {"TSTP", SIGTSTP},
- {"CONT", SIGCONT},
- {"CHLD", SIGCHLD},
- {"TTIN", SIGTTIN},
- {"TTOU", SIGTTOU},
- {"IO", SIGIO},
-# ifndef __alpha__
- {"POLL", SIGIO},
-# endif
- {"XCPU", SIGXCPU},
- {"XFSZ", SIGXFSZ},
- {"VTALRM", SIGVTALRM},
- {"PROF", SIGPROF},
- {"WINCH", SIGWINCH},
-# ifdef __alpha__
- {"INFO", SIGINFO},
-# else
- {"LOST", SIGLOST},
-# endif
- {"USR1", SIGUSR1},
- {"USR2", SIGUSR2},
-#else
- {"STKFLT", SIGSTKFLT},
- {"CHLD", SIGCHLD},
- {"CONT", SIGCONT},
- {"STOP", SIGSTOP},
- {"TSTP", SIGTSTP},
- {"TTIN", SIGTTIN},
- {"TTOU", SIGTTOU},
- {"URG", SIGURG},
- {"XCPU", SIGXCPU},
- {"XFSZ", SIGXFSZ},
- {"VTALRM", SIGVTALRM},
- {"PROF", SIGPROF},
- {"WINCH", SIGWINCH},
- {"IO", SIGIO},
- {"POLL", SIGPOLL},
- {"PWR", SIGPWR},
- {"UNUSED", SIGUNUSED},
-#endif
- {0, 0}
+#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)
+extern int kill_main(int argc, char **argv)
{
- int sig = SIGTERM;
-
- argc--;
- argv++;
- /* Parse any options */
- if (argc < 1)
- usage(kill_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;
+ 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;
+ }
+ }
}
- }
- fprintf(stderr, "\n\n");
- exit( TRUE);
+ argc--;
+ argv++;
}
- break;
- case '-':
- usage(kill_usage);
- default:
- {
- if (isdigit( **argv)) {
- sig = atoi (*argv);
- if (sig < 0 || sig >= NSIG)
- goto end;
- else {
- argc--;
- argv++;
- goto do_it_now;
+ }
+
+ 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);
}
- }
- 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++;
+
+ for(; pidList && *pidList!=0; pidList++) {
+ if (*pidList==myPid)
+ continue;
+ if (kill(*pidList, sig) != 0)
+ perror_msg_and_die( "Could not kill pid '%d'", *pidList);
}
- if (s->name == 0)
- goto end;
- }
+ /* 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++;
}
- }
- argc--;
- argv++;
- }
- }
-
-do_it_now:
-
- while (argc >= 1) {
- int pid;
- struct stat statbuf;
- char pidpath[20]="/proc/";
-
- if (! isdigit( **argv)) {
- fprintf(stderr, "bad PID: %s\n", *argv);
- exit( FALSE);
- }
- pid = atoi (*argv);
- snprintf(pidpath, 20, "/proc/%s/stat", *argv);
- if (stat( pidpath, &statbuf)!=0) {
- fprintf(stderr, "kill: (%d) - No such pid\n", pid);
- exit( FALSE);
+ if (all_found == FALSE)
+ return EXIT_FAILURE;
}
- if (kill (pid, sig) != 0) {
- perror (*argv);
- exit ( FALSE);
- }
- argv++;
- }
- exit ( TRUE);
+#endif
-
-end:
- fprintf(stderr, "bad signal name: %s\n", *argv);
- exit (TRUE);
-}
+ return EXIT_SUCCESS;
+ end:
+ error_msg_and_die( "bad signal name: %s", *argv);
+}
projects / oweals / busybox.git / blobdiff