mirror of
https://github.com/freebsd/freebsd-src.git
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Merge Lite2 mods, and -Wall cleaning.
This commit is contained in:
Steve Price
parent
113b529fc5
commit
ffcfff94d0
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=20416
@ -32,10 +32,10 @@
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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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.\" @(#)kill.1 8.1 (Berkeley) 5/31/93
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.\" $Id: kill.1,v 1.2 1994/09/24 02:55:43 davidg Exp $
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.\" @(#)kill.1 8.2 (Berkeley) 4/28/95
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.\" $Id: kill.1,v 1.3 1996/07/03 22:19:50 wosch Exp $
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.\"
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.Dd May 31, 1993
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.Dd April 28, 1995
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.Dt KILL 1
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.Os
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.Sh NAME
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@ -43,57 +43,74 @@
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.Nd terminate or signal a process
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.Sh SYNOPSIS
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.Nm kill
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.Op Fl signal_name
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.Op Fl s Ar signal_name
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.Ar pid
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\&...
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.Nm kill
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.Op Fl signal_number
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.Fl l
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.Op Ar exit_status
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.Nm kill
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.Fl signal_name
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.Ar pid
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\&...
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.Nm kill
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.Op Fl l
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.Fl signal_number
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.Ar pid
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\&...
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.Sh DESCRIPTION
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The kill utility sends the
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.Dv TERM
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signal to the processes specified
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by the pid operand(s).
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The
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.Nm
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utility sends a signal to the processes specified by the pid operand(s).
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.Pp
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Only the super-user may send signals to other users' processes.
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.Pp
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The options are as follows:
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.Pp
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.Bl -tag -width Ds
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.It Fl l
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List the signal names.
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.It Fl s Ar signal_name
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A symbolic signal name specifying the signal to be sent instead of the
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default
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.Dv TERM .
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.It Fl l Op Ar exit_status
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If no operand is given, list the signal names; otherwise, write
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the signal name corresponding to
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.Ar exit_status .
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.It Fl signal_name
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A symbolic signal name specifying the signal to be sent instead of the
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default
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.Dv TERM .
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The
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.Fl l
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option displays the signal names.
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.It Fl signal_number
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A non-negative decimal integer, specifying the signal to be sent instead
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of the default
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.Dv TERM .
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.El
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.Pp
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Some of the more commonly used signals:
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.Bd -ragged -offset indent -compact
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.Bl -column XXX TERM
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.It -1 -1 (super-user broadcast to all processes, or user broadcast
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to user's processes)
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.It 0 0 (sh(1) only, signals all members of process group)
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.It 2 INT (interrupt)
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.It 3 QUIT (quit)
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.It 6 ABRT (abort)
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.It 9 KILL (non-catchable, non-ignorable kill)
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.It 14 ALRM (alarm clock)
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.It 15 TERM (software termination signal)
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The following pids have special meanings:
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.Bl -tag -width Ds -compact
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.It -1
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If superuser, broadcast the signal to all processes; otherwise broadcast
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to all processes belonging to the user.
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.El
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.Ed
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.Pp
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.Nm Kill
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Some of the more commonly used signals:
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.Bl -tag -width Ds -compact
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.It 1
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HUP (hang up)
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.It 2
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INT (interrupt)
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.It 3
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QUIT (quit)
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.It 6
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ABRT (abort)
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.It 9
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KILL (non-catchable, non-ignorable kill)
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.It 14
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ALRM (alarm clock)
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.It 15
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TERM (software termination signal)
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.El
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.Pp
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.Nm
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is a built-in to
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.Xr csh 1 ;
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it allows job specifiers of the form ``%...'' as arguments
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@ -109,6 +126,12 @@ for details.
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.Xr ps 1 ,
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.Xr kill 2 ,
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.Xr sigvec 2
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.Sh STANDARDS
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The
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.Nm
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function is expected to be
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.St -p1003.2
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compatible.
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.Sh HISTORY
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A
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.Nm kill
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100
bin/kill/kill.c
100
bin/kill/kill.c
@ -30,17 +30,17 @@
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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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* $Id: kill.c,v 1.2 1994/09/24 02:55:44 davidg Exp $
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* $Id: kill.c,v 1.3 1995/03/05 21:52:41 jkh Exp $
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*/
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#ifndef lint
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static char copyright[] =
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static char const copyright[] =
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"@(#) Copyright (c) 1988, 1993, 1994\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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static char sccsid[] = "@(#)kill.c 8.3 (Berkeley) 4/2/94";
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static char const sccsid[] = "@(#)kill.c 8.4 (Berkeley) 4/28/95";
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#endif /* not lint */
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#include <ctype.h>
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@ -52,7 +52,8 @@ static char sccsid[] = "@(#)kill.c 8.3 (Berkeley) 4/2/94";
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#include <string.h>
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void nosig __P((char *));
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void printsig __P((FILE *));
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void printsignals __P((FILE *));
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int signame_to_signum __P((char *));
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void usage __P((void));
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int
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@ -60,30 +61,52 @@ main(argc, argv)
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int argc;
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char *argv[];
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{
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const char *const *p;
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int errors, numsig, pid;
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char *ep;
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if (argc < 2)
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usage();
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if (!strcmp(*++argv, "-l")) {
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printsig(stdout);
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numsig = SIGTERM;
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argc--, argv++;
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if (!strcmp(*argv, "-l")) {
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argc--, argv++;
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if (argc > 1)
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usage();
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if (argc == 1) {
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if (!isdigit(**argv))
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usage();
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numsig = strtol(*argv, &ep, 10);
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if (!*argv || *ep)
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errx(1, "illegal signal number: %s", *argv);
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if (numsig >= 128)
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numsig -= 128;
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if (numsig <= 0 || numsig >= NSIG)
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nosig(*argv);
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printf("%s\n", sys_signame[numsig]);
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exit(0);
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}
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printsignals(stdout);
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exit(0);
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}
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numsig = SIGTERM;
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if (**argv == '-') {
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if (!strcmp(*argv, "-s")) {
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argc--, argv++;
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if (argc < 1) {
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warnx("option requires an argument -- s");
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usage();
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}
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if (strcmp(*argv, "0")) {
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if ((numsig = signame_to_signum(*argv)) < 0)
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nosig(*argv);
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} else
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numsig = 0;
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argc--, argv++;
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} else if (**argv == '-') {
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++*argv;
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if (isalpha(**argv)) {
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if (!strncasecmp(*argv, "sig", 3))
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*argv += 3;
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for (numsig = NSIG, p = sys_signame + 1; --numsig; ++p)
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if (!strcasecmp(*p, *argv)) {
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numsig = p - sys_signame;
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break;
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}
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if (!numsig)
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if ((numsig = signame_to_signum(*argv)) < 0)
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nosig(*argv);
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} else if (isdigit(**argv)) {
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numsig = strtol(*argv, &ep, 10);
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@ -93,13 +116,13 @@ main(argc, argv)
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nosig(*argv);
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} else
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nosig(*argv);
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++argv;
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argc--, argv++;
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}
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if (!*argv)
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if (argc == 0)
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usage();
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for (errors = 0; *argv; ++argv) {
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for (errors = 0; argc; argc--, argv++) {
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pid = strtol(*argv, &ep, 10);
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if (!*argv || *ep) {
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warnx("illegal process id: %s", *argv);
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@ -109,38 +132,57 @@ main(argc, argv)
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errors = 1;
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}
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}
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exit(errors);
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}
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int
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signame_to_signum(sig)
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char *sig;
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{
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int n;
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if (!strncasecmp(sig, "sig", 3))
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sig += 3;
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for (n = 1; n < NSIG; n++) {
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if (!strcasecmp(sys_signame[n], sig))
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return (n);
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}
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return (-1);
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}
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void
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nosig(name)
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char *name;
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{
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warnx("unknown signal %s; valid signals:", name);
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printsig(stderr);
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printsignals(stderr);
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exit(1);
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}
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void
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printsig(fp)
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printsignals(fp)
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FILE *fp;
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{
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const char *const *p;
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int cnt;
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int n;
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for (cnt = NSIG, p = sys_signame + 1; --cnt; ++p) {
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(void)fprintf(fp, "%s ", *p);
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if (cnt == NSIG / 2)
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for (n = 1; n < NSIG; n++) {
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(void)fprintf(fp, "%s", sys_signame[n]);
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if (n == (NSIG / 2) || n == (NSIG - 1))
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(void)fprintf(fp, "\n");
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else
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(void)fprintf(fp, " ");
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}
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(void)fprintf(fp, "\n");
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}
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void
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usage()
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{
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(void)fprintf(stderr, "usage: kill [-l] [-sig] pid ...\n");
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(void)fprintf(stderr, "usage: kill [-s signal_name] pid ...\n");
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(void)fprintf(stderr, " kill -l [exit_status]\n");
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(void)fprintf(stderr, " kill -signal_name pid ...\n");
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(void)fprintf(stderr, " kill -signal_number pid ...\n");
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exit(1);
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}
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