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authorSteve Price <steve@FreeBSD.org>1996-12-14 06:01:00 +0000
committerSteve Price <steve@FreeBSD.org>1996-12-14 06:01:00 +0000
commitffcfff94d085fc2228bd01fda9e8c19f217d957a (patch)
tree18f8bb7a82eece3461a89b2a6a1d141a8c4236b8 /bin/kill
parent113b529fc54c8bafaf8ab85db2a55ee981b941e0 (diff)
downloadsrc-ffcfff94d085fc2228bd01fda9e8c19f217d957a.tar.gz
src-ffcfff94d085fc2228bd01fda9e8c19f217d957a.zip
Merge Lite2 mods, and -Wall cleaning.
Notes
Notes: svn path=/head/; revision=20416
Diffstat (limited to 'bin/kill')
-rw-r--r--bin/kill/kill.179
-rw-r--r--bin/kill/kill.c100
2 files changed, 122 insertions, 57 deletions
diff --git a/bin/kill/kill.1 b/bin/kill/kill.1
index fabafc016937..5359199efb52 100644
--- a/bin/kill/kill.1
+++ b/bin/kill/kill.1
@@ -32,10 +32,10 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" @(#)kill.1 8.1 (Berkeley) 5/31/93
-.\" $Id: kill.1,v 1.2 1994/09/24 02:55:43 davidg Exp $
+.\" @(#)kill.1 8.2 (Berkeley) 4/28/95
+.\" $Id: kill.1,v 1.3 1996/07/03 22:19:50 wosch Exp $
.\"
-.Dd May 31, 1993
+.Dd April 28, 1995
.Dt KILL 1
.Os
.Sh NAME
@@ -43,57 +43,74 @@
.Nd terminate or signal a process
.Sh SYNOPSIS
.Nm kill
-.Op Fl signal_name
+.Op Fl s Ar signal_name
.Ar pid
\&...
.Nm kill
-.Op Fl signal_number
+.Fl l
+.Op Ar exit_status
+.Nm kill
+.Fl signal_name
.Ar pid
\&...
.Nm kill
-.Op Fl l
+.Fl signal_number
+.Ar pid
+\&...
.Sh DESCRIPTION
-The kill utility sends the
-.Dv TERM
-signal to the processes specified
-by the pid operand(s).
+The
+.Nm
+utility sends a signal to the processes specified by the pid operand(s).
.Pp
Only the super-user may send signals to other users' processes.
.Pp
The options are as follows:
.Pp
.Bl -tag -width Ds
-.It Fl l
-List the signal names.
+.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 signal_name
A symbolic signal name specifying the signal to be sent instead of the
default
.Dv TERM .
-The
-.Fl l
-option displays the signal names.
.It Fl 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 Ds -compact
+.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:
-.Bd -ragged -offset indent -compact
-.Bl -column XXX TERM
-.It -1 -1 (super-user broadcast to all processes, or user broadcast
-to user's processes)
-.It 0 0 (sh(1) only, signals all members of process group)
-.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)
+.Bl -tag -width Ds -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
-.Ed
.Pp
-.Nm Kill
+.Nm
is a built-in to
.Xr csh 1 ;
it allows job specifiers of the form ``%...'' as arguments
@@ -109,6 +126,12 @@ for details.
.Xr ps 1 ,
.Xr kill 2 ,
.Xr sigvec 2
+.Sh STANDARDS
+The
+.Nm
+function is expected to be
+.St -p1003.2
+compatible.
.Sh HISTORY
A
.Nm kill
diff --git a/bin/kill/kill.c b/bin/kill/kill.c
index 7de25e157206..0472d92f8599 100644
--- a/bin/kill/kill.c
+++ b/bin/kill/kill.c
@@ -30,17 +30,17 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
- * $Id: kill.c,v 1.2 1994/09/24 02:55:44 davidg Exp $
+ * $Id: kill.c,v 1.3 1995/03/05 21:52:41 jkh Exp $
*/
#ifndef lint
-static char copyright[] =
+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 8.3 (Berkeley) 4/2/94";
+static char const sccsid[] = "@(#)kill.c 8.4 (Berkeley) 4/28/95";
#endif /* not lint */
#include <ctype.h>
@@ -52,7 +52,8 @@ static char sccsid[] = "@(#)kill.c 8.3 (Berkeley) 4/2/94";
#include <string.h>
void nosig __P((char *));
-void printsig __P((FILE *));
+void printsignals __P((FILE *));
+int signame_to_signum __P((char *));
void usage __P((void));
int
@@ -60,30 +61,52 @@ main(argc, argv)
int argc;
char *argv[];
{
- const char *const *p;
int errors, numsig, pid;
char *ep;
if (argc < 2)
usage();
- if (!strcmp(*++argv, "-l")) {
- printsig(stdout);
+ 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(1, "illegal signal number: %s", *argv);
+ if (numsig >= 128)
+ numsig -= 128;
+ if (numsig <= 0 || numsig >= NSIG)
+ nosig(*argv);
+ printf("%s\n", sys_signame[numsig]);
+ exit(0);
+ }
+ printsignals(stdout);
exit(0);
}
- numsig = SIGTERM;
- if (**argv == '-') {
+ 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;
if (isalpha(**argv)) {
- if (!strncasecmp(*argv, "sig", 3))
- *argv += 3;
- for (numsig = NSIG, p = sys_signame + 1; --numsig; ++p)
- if (!strcasecmp(*p, *argv)) {
- numsig = p - sys_signame;
- break;
- }
- if (!numsig)
+ if ((numsig = signame_to_signum(*argv)) < 0)
nosig(*argv);
} else if (isdigit(**argv)) {
numsig = strtol(*argv, &ep, 10);
@@ -93,13 +116,13 @@ main(argc, argv)
nosig(*argv);
} else
nosig(*argv);
- ++argv;
+ argc--, argv++;
}
- if (!*argv)
+ if (argc == 0)
usage();
- for (errors = 0; *argv; ++argv) {
+ for (errors = 0; argc; argc--, argv++) {
pid = strtol(*argv, &ep, 10);
if (!*argv || *ep) {
warnx("illegal process id: %s", *argv);
@@ -109,38 +132,57 @@ main(argc, argv)
errors = 1;
}
}
+
exit(errors);
}
+int
+signame_to_signum(sig)
+ char *sig;
+{
+ int n;
+
+ if (!strncasecmp(sig, "sig", 3))
+ sig += 3;
+ for (n = 1; n < NSIG; n++) {
+ if (!strcasecmp(sys_signame[n], sig))
+ return (n);
+ }
+ return (-1);
+}
+
void
nosig(name)
char *name;
{
warnx("unknown signal %s; valid signals:", name);
- printsig(stderr);
+ printsignals(stderr);
exit(1);
}
void
-printsig(fp)
+printsignals(fp)
FILE *fp;
{
- const char *const *p;
- int cnt;
+ int n;
- for (cnt = NSIG, p = sys_signame + 1; --cnt; ++p) {
- (void)fprintf(fp, "%s ", *p);
- if (cnt == NSIG / 2)
+ for (n = 1; n < NSIG; n++) {
+ (void)fprintf(fp, "%s", sys_signame[n]);
+ if (n == (NSIG / 2) || n == (NSIG - 1))
(void)fprintf(fp, "\n");
+ else
+ (void)fprintf(fp, " ");
}
- (void)fprintf(fp, "\n");
}
void
usage()
{
- (void)fprintf(stderr, "usage: kill [-l] [-sig] pid ...\n");
+ (void)fprintf(stderr, "usage: kill [-s signal_name] pid ...\n");
+ (void)fprintf(stderr, " kill -l [exit_status]\n");
+ (void)fprintf(stderr, " kill -signal_name pid ...\n");
+ (void)fprintf(stderr, " kill -signal_number pid ...\n");
exit(1);
}