aboutsummaryrefslogtreecommitdiff
path: root/bin/kill
diff options
context:
space:
mode:
Diffstat (limited to 'bin/kill')
-rw-r--r--bin/kill/Makefile7
-rw-r--r--bin/kill/Makefile.depend18
-rw-r--r--bin/kill/kill.1157
-rw-r--r--bin/kill/kill.c209
4 files changed, 391 insertions, 0 deletions
diff --git a/bin/kill/Makefile b/bin/kill/Makefile
new file mode 100644
index 000000000000..4c9cddacd9a4
--- /dev/null
+++ b/bin/kill/Makefile
@@ -0,0 +1,7 @@
+# @(#)Makefile 8.1 (Berkeley) 5/31/93
+# $FreeBSD$
+
+PACKAGE=runtime
+PROG= kill
+
+.include <bsd.prog.mk>
diff --git a/bin/kill/Makefile.depend b/bin/kill/Makefile.depend
new file mode 100644
index 000000000000..3646e2e2b1af
--- /dev/null
+++ b/bin/kill/Makefile.depend
@@ -0,0 +1,18 @@
+# $FreeBSD$
+# Autogenerated - do NOT edit!
+
+DIRDEPS = \
+ gnu/lib/csu \
+ gnu/lib/libgcc \
+ include \
+ include/xlocale \
+ lib/${CSU_DIR} \
+ lib/libc \
+ lib/libcompiler_rt \
+
+
+.include <dirdeps.mk>
+
+.if ${DEP_RELDIR} == ${_DEP_RELDIR}
+# local dependencies - needed for -jN in clean tree
+.endif
diff --git a/bin/kill/kill.1 b/bin/kill/kill.1
new file mode 100644
index 000000000000..b6b655ce17a9
--- /dev/null
+++ b/bin/kill/kill.1
@@ -0,0 +1,157 @@
+.\"-
+.\" Copyright (c) 1980, 1990, 1993
+.\" The Regents of the University of California. All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the Institute of Electrical and Electronics Engineers, Inc.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\" notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\" notice, this list of conditions and the following disclaimer in the
+.\" documentation and/or other materials provided with the distribution.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\" may be used to endorse or promote products derived from this software
+.\" without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\" @(#)kill.1 8.2 (Berkeley) 4/28/95
+.\" $FreeBSD$
+.\"
+.Dd October 3, 2016
+.Dt KILL 1
+.Os
+.Sh NAME
+.Nm kill
+.Nd terminate or signal a process
+.Sh SYNOPSIS
+.Nm
+.Op Fl s Ar signal_name
+.Ar pid ...
+.Nm
+.Fl l
+.Op Ar exit_status
+.Nm
+.Fl Ar signal_name
+.Ar pid ...
+.Nm
+.Fl Ar signal_number
+.Ar pid ...
+.Sh DESCRIPTION
+The
+.Nm
+utility sends a signal to the processes specified by the
+.Ar pid
+operands.
+.Pp
+Only the super-user may send signals to other users' processes.
+.Pp
+The options are as follows:
+.Bl -tag -width indent
+.It Fl s Ar signal_name
+A symbolic signal name specifying the signal to be sent instead of the
+default
+.Dv TERM .
+.It Fl l Op Ar exit_status
+If no operand is given, list the signal names; otherwise, write
+the signal name corresponding to
+.Ar exit_status .
+.It Fl Ar signal_name
+A symbolic signal name specifying the signal to be sent instead of the
+default
+.Dv TERM .
+.It Fl Ar signal_number
+A non-negative decimal integer, specifying the signal to be sent instead
+of the default
+.Dv TERM .
+.El
+.Pp
+The following PIDs have special meanings:
+.Bl -tag -width indent
+.It -1
+If superuser, broadcast the signal to all processes; otherwise broadcast
+to all processes belonging to the user.
+.El
+.Pp
+Some of the more commonly used signals:
+.Pp
+.Bl -tag -width indent -compact
+.It 1
+HUP (hang up)
+.It 2
+INT (interrupt)
+.It 3
+QUIT (quit)
+.It 6
+ABRT (abort)
+.It 9
+KILL (non-catchable, non-ignorable kill)
+.It 14
+ALRM (alarm clock)
+.It 15
+TERM (software termination signal)
+.El
+.Pp
+Some shells may provide a builtin
+.Nm
+command which is similar or identical to this utility.
+Consult the
+.Xr builtin 1
+manual page.
+.Sh EXIT STATUS
+.Ex -std
+.Sh EXAMPLES
+Terminate
+the processes with PIDs 142 and 157:
+.Pp
+.Dl "kill 142 157"
+.Pp
+Send the hangup signal
+.Pq Dv SIGHUP
+to the process with PID 507:
+.Pp
+.Dl "kill -s HUP 507"
+.Pp
+Terminate the process group with PGID 117:
+.Pp
+.Dl "kill -- -117"
+.Sh SEE ALSO
+.Xr builtin 1 ,
+.Xr csh 1 ,
+.Xr killall 1 ,
+.Xr ps 1 ,
+.Xr sh 1 ,
+.Xr kill 2 ,
+.Xr sigaction 2
+.Sh STANDARDS
+The
+.Nm
+utility is expected to be
+.St -p1003.2
+compatible.
+.Sh HISTORY
+A
+.Nm
+command appeared in
+.At v3
+in section 8 of the manual.
+.Sh BUGS
+A replacement for the command
+.Dq Li kill 0
+for
+.Xr csh 1
+users should be provided.
diff --git a/bin/kill/kill.c b/bin/kill/kill.c
new file mode 100644
index 000000000000..bfa274bc129c
--- /dev/null
+++ b/bin/kill/kill.c
@@ -0,0 +1,209 @@
+/*-
+ * Copyright (c) 1988, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+/*
+ * Important: This file is used both as a standalone program /bin/kill and
+ * as a builtin for /bin/sh (#define SHELL).
+ */
+
+#if 0
+#ifndef lint
+static char const copyright[] =
+"@(#) Copyright (c) 1988, 1993, 1994\n\
+ The Regents of the University of California. All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)kill.c 8.4 (Berkeley) 4/28/95";
+#endif /* not lint */
+#endif
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <ctype.h>
+#include <err.h>
+#include <errno.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#ifdef SHELL
+#define main killcmd
+#include "bltin/bltin.h"
+#endif
+
+static void nosig(const char *);
+static void printsignals(FILE *);
+static int signame_to_signum(const char *);
+static void usage(void);
+
+int
+main(int argc, char *argv[])
+{
+ int errors, numsig, pid, ret;
+ char *ep;
+
+ if (argc < 2)
+ usage();
+
+ numsig = SIGTERM;
+
+ argc--, argv++;
+ if (!strcmp(*argv, "-l")) {
+ argc--, argv++;
+ if (argc > 1)
+ usage();
+ if (argc == 1) {
+ if (!isdigit(**argv))
+ usage();
+ numsig = strtol(*argv, &ep, 10);
+ if (!**argv || *ep)
+ errx(2, "illegal signal number: %s", *argv);
+ if (numsig >= 128)
+ numsig -= 128;
+ if (numsig <= 0 || numsig >= sys_nsig)
+ nosig(*argv);
+ printf("%s\n", sys_signame[numsig]);
+ return (0);
+ }
+ printsignals(stdout);
+ return (0);
+ }
+
+ if (!strcmp(*argv, "-s")) {
+ argc--, argv++;
+ if (argc < 1) {
+ warnx("option requires an argument -- s");
+ usage();
+ }
+ if (strcmp(*argv, "0")) {
+ if ((numsig = signame_to_signum(*argv)) < 0)
+ nosig(*argv);
+ } else
+ numsig = 0;
+ argc--, argv++;
+ } else if (**argv == '-' && *(*argv + 1) != '-') {
+ ++*argv;
+ if (isalpha(**argv)) {
+ if ((numsig = signame_to_signum(*argv)) < 0)
+ nosig(*argv);
+ } else if (isdigit(**argv)) {
+ numsig = strtol(*argv, &ep, 10);
+ if (!**argv || *ep)
+ errx(2, "illegal signal number: %s", *argv);
+ if (numsig < 0)
+ nosig(*argv);
+ } else
+ nosig(*argv);
+ argc--, argv++;
+ }
+
+ if (argc > 0 && strncmp(*argv, "--", 2) == 0)
+ argc--, argv++;
+
+ if (argc == 0)
+ usage();
+
+ for (errors = 0; argc; argc--, argv++) {
+#ifdef SHELL
+ if (**argv == '%')
+ ret = killjob(*argv, numsig);
+ else
+#endif
+ {
+ pid = strtol(*argv, &ep, 10);
+ if (!**argv || *ep)
+ errx(2, "illegal process id: %s", *argv);
+ ret = kill(pid, numsig);
+ }
+ if (ret == -1) {
+ warn("%s", *argv);
+ errors = 1;
+ }
+ }
+
+ return (errors);
+}
+
+static int
+signame_to_signum(const char *sig)
+{
+ int n;
+
+ if (strncasecmp(sig, "SIG", 3) == 0)
+ sig += 3;
+ for (n = 1; n < sys_nsig; n++) {
+ if (!strcasecmp(sys_signame[n], sig))
+ return (n);
+ }
+ return (-1);
+}
+
+static void
+nosig(const char *name)
+{
+
+ warnx("unknown signal %s; valid signals:", name);
+ printsignals(stderr);
+#ifdef SHELL
+ error(NULL);
+#else
+ exit(2);
+#endif
+}
+
+static void
+printsignals(FILE *fp)
+{
+ int n;
+
+ for (n = 1; n < sys_nsig; n++) {
+ (void)fprintf(fp, "%s", sys_signame[n]);
+ if (n == (sys_nsig / 2) || n == (sys_nsig - 1))
+ (void)fprintf(fp, "\n");
+ else
+ (void)fprintf(fp, " ");
+ }
+}
+
+static void
+usage(void)
+{
+
+ (void)fprintf(stderr, "%s\n%s\n%s\n%s\n",
+ "usage: kill [-s signal_name] pid ...",
+ " kill -l [exit_status]",
+ " kill -signal_name pid ...",
+ " kill -signal_number pid ...");
+#ifdef SHELL
+ error(NULL);
+#else
+ exit(2);
+#endif
+}