440 lines
11 KiB
C
440 lines
11 KiB
C
/*
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* Copyright (c) 1988, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* oct 5 1994 -- almost entirely re-written to allow for process names.
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* modifications (c) salvatore valente <svalente@mit.edu>
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* may be used / modified / distributed under the same terms as the original.
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*
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* 1999-02-22 Arkadiusz Mi<4D>kiewicz <misiek@pld.ORG.PL>
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* - added Native Language Support
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*
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* 1999-11-13 aeb Accept signal numers 128+s.
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h> /* for isdigit() */
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#include <unistd.h>
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#include <signal.h>
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#include "c.h"
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#include "kill.h"
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#include "nls.h"
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#include "closestream.h"
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#include "strutils.h"
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struct signv {
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char *name;
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int val;
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} sys_signame[] = {
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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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};
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extern char *mybasename(char *);
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static int arg_to_signum (char *arg, int mask);
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static void nosig (char *name);
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static void printsig (int sig);
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static void printsignals (FILE *fp);
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static int usage (int status);
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static int kill_verbose (char *procname, int pid, int sig);
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static char *progname;
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#ifdef HAVE_SIGQUEUE
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static int use_sigval;
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static union sigval sigdata;
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#endif
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int main (int argc, char *argv[])
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{
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int errors, numsig, pid;
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char *ep, *arg, *p;
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int do_pid, do_kill, check_all;
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int *pids, *ip;
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progname = argv[0];
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if ((p = strrchr(progname, '/')) != NULL)
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progname = p+1;
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setlocale(LC_ALL, "");
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bindtextdomain(PACKAGE, LOCALEDIR);
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textdomain(PACKAGE);
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atexit(close_stdout);
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numsig = SIGTERM;
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do_pid = (! strcmp (progname, "pid")); /* Yecch */
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do_kill = 0;
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check_all = 0;
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/* loop through the arguments.
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actually, -a is the only option can be used with other options.
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`kill' is basically a one-option-at-most program. */
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for (argc--, argv++; argc > 0; argc--, argv++) {
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arg = *argv;
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if (*arg != '-') {
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break;
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}
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if (! strcmp (arg, "--")) {
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argc--, argv++;
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break;
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}
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if (! strcmp (arg, "-v") || ! strcmp (arg, "-V") ||
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! strcmp (arg, "--version")) {
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printf(UTIL_LINUX_VERSION);
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return 0;
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}
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if (! strcmp (arg, "-a")) {
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check_all++;
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continue;
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}
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if (! strcmp (arg, "-l")) {
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if (argc < 2) {
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printsignals (stdout);
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return 0;
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}
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if (argc > 2) {
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return usage (1);
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}
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/* argc == 2, accept "kill -l $?" */
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arg = argv[1];
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if ((numsig = arg_to_signum (arg, 1)) < 0) {
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fprintf (stderr, _("%s: unknown signal %s\n"), progname, arg);
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return 1;
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}
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printsig (numsig);
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return 0;
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}
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if (! strcmp (arg, "-p")) {
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do_pid++;
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if (do_kill)
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return usage (1);
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continue;
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}
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if (! strcmp (arg, "-s")) {
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if (argc < 2) {
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return usage (1);
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}
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do_kill++;
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if (do_pid)
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return usage (1);
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argc--, argv++;
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arg = *argv;
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if ((numsig = arg_to_signum (arg, 0)) < 0) {
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nosig (arg);
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return 1;
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}
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continue;
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}
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if (! strcmp (arg, "-q")) {
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if (argc < 2)
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return usage (1);
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argc--, argv++;
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arg = *argv;
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#ifdef HAVE_SIGQUEUE
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sigdata.sival_int = strtos32_or_err(arg, _("invalid sigval argument"));
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use_sigval = 1;
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#endif
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continue;
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}
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/* `arg' begins with a dash but is not a known option.
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so it's probably something like -HUP, or -1/-n
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try to deal with it.
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-n could be signal n, or pid -n (i.e. process group n).
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In case of doubt POSIX tells us to assume a signal.
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If a signal has been parsed, assume it's a pid, break */
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if (do_kill)
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break;
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arg++;
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if ((numsig = arg_to_signum (arg, 0)) < 0) {
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return usage (1);
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}
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do_kill++;
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if (do_pid)
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return usage (1);
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continue;
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}
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if (! *argv) {
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return usage (1);
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}
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if (do_pid) {
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numsig = -1;
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}
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/* we're done with the options.
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the rest of the arguments should be process ids and names.
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kill them. */
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for (errors = 0; (arg = *argv) != NULL; argv++) {
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pid = strtol (arg, &ep, 10);
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if (! *ep)
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errors += kill_verbose (arg, pid, numsig);
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else {
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pids = get_pids (arg, check_all);
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if (! pids) {
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errors++;
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fprintf (stderr, _("%s: can't find process \"%s\"\n"),
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progname, arg);
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continue;
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}
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for (ip = pids; *ip >= 0; ip++)
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errors += kill_verbose (arg, *ip, numsig);
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free (pids);
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}
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}
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return (errors);
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}
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#ifdef SIGRTMIN
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static int rtsig_to_signum(char *sig)
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{
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int num, maxi = 0;
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char *ep = NULL;
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if (strncasecmp(sig, "min+", 4) == 0)
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sig += 4;
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else if (strncasecmp(sig, "max-", 4) == 0) {
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sig += 4;
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maxi = 1;
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}
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if (!isdigit(*sig))
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return -1;
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errno = 0;
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num = strtol(sig, &ep, 10);
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if (!ep || sig == ep || errno || num < 0)
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return -1;
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num = maxi ? SIGRTMAX - num : SIGRTMIN + num;
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if (num < SIGRTMIN || num > SIGRTMAX)
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return -1;
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return num;
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}
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#endif
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static int signame_to_signum (char *sig)
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{
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size_t n;
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if (! strncasecmp (sig, "sig", 3))
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sig += 3;
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#ifdef SIGRTMIN
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/* RT signals */
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if (!strncasecmp(sig, "rt", 2))
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return rtsig_to_signum(sig + 2);
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#endif
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/* Normal sugnals */
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for (n = 0; n < ARRAY_SIZE(sys_signame); n++) {
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if (! strcasecmp (sys_signame[n].name, sig))
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return sys_signame[n].val;
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}
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return (-1);
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}
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static int arg_to_signum (char *arg, int maskbit)
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{
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int numsig;
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char *ep;
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if (isdigit (*arg)) {
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numsig = strtol (arg, &ep, 10);
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if (numsig >= NSIG && maskbit && (numsig & 128) != 0)
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numsig -= 128;
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if (*ep != 0 || numsig < 0 || numsig >= NSIG)
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return (-1);
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return (numsig);
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}
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return signame_to_signum (arg);
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}
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static void nosig (char *name)
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{
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fprintf (stderr, _("%s: unknown signal %s; valid signals:\n"), progname, name);
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printsignals (stderr);
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}
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static void printsig (int sig)
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{
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size_t n;
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for (n = 0; n < ARRAY_SIZE(sys_signame); n++) {
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if (sys_signame[n].val == sig) {
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printf ("%s\n", sys_signame[n].name);
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return;
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}
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}
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#ifdef SIGRTMIN
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if (sig >= SIGRTMIN && sig <= SIGRTMAX) {
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printf ("RT%d\n", sig - SIGRTMIN);
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return;
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}
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#endif
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printf("%d\n", sig);
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}
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static void printsignals (FILE *fp)
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{
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size_t n, lth, lpos = 0;
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for (n = 0; n < ARRAY_SIZE(sys_signame); n++) {
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lth = 1+strlen(sys_signame[n].name);
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if (lpos+lth > 72) {
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fputc ('\n', fp);
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lpos = 0;
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} else if (lpos)
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fputc (' ', fp);
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lpos += lth;
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fputs (sys_signame[n].name, fp);
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}
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#ifdef SIGRTMIN
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fputs (" RT<N> RTMIN+<N> RTMAX-<N>", fp);
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#endif
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fputc ('\n', fp);
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}
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static int usage (int status)
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{
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FILE *fp;
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fp = (status == 0 ? stdout : stderr);
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fprintf (fp, _("usage: %s [ -s signal | -p ] [ -a ] pid ...\n"), progname);
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fprintf (fp, _(" %s -l [ signal ]\n"), progname);
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return status;
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}
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static int kill_verbose (char *procname, int pid, int sig)
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{
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int rc;
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if (sig < 0) {
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printf ("%d\n", pid);
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return 0;
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}
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#ifdef HAVE_SIGQUEUE
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if (use_sigval)
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rc = sigqueue(pid, sig, sigdata);
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else
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#endif
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rc = kill (pid, sig);
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if (rc < 0) {
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fprintf (stderr, "%s ", progname);
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perror (procname);
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return 1;
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}
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return 0;
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}
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