Module Name: src
Committed By: christos
Date: Mon Mar 2 21:43:39 UTC 2015
Added Files:
src/usr.bin/pwait: Makefile pwait.1 pwait.c
Log Message:
Add pwait, from FreeBSD
To generate a diff of this commit:
cvs rdiff -u -r0 -r1.1 src/usr.bin/pwait/Makefile src/usr.bin/pwait/pwait.1 \
src/usr.bin/pwait/pwait.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Added files:
Index: src/usr.bin/pwait/Makefile
diff -u /dev/null src/usr.bin/pwait/Makefile:1.1
--- /dev/null Mon Mar 2 16:43:39 2015
+++ src/usr.bin/pwait/Makefile Mon Mar 2 16:43:39 2015
@@ -0,0 +1,6 @@
+# $NetBSD: Makefile,v 1.1 2015/03/02 21:43:39 christos Exp $
+WARNS=6
+
+PROG= pwait
+
+.include <bsd.prog.mk>
Index: src/usr.bin/pwait/pwait.1
diff -u /dev/null src/usr.bin/pwait/pwait.1:1.1
--- /dev/null Mon Mar 2 16:43:39 2015
+++ src/usr.bin/pwait/pwait.1 Mon Mar 2 16:43:39 2015
@@ -0,0 +1,78 @@
+.\" $NetBSD: pwait.1,v 1.1 2015/03/02 21:43:39 christos Exp $
+.\"
+.\" Copyright (c) 2004-2009, Jilles Tjoelker
+.\" 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.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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
+.\" COPYRIGHT OWNER 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.
+.\"
+.\" $FreeBSD: head/bin/pwait/pwait.1 233648 2012-03-29 05:02:12Z eadler $
+.\"
+.Dd November 1, 2009
+.Dt PWAIT 1
+.Os
+.Sh NAME
+.Nm pwait
+.Nd wait for processes to terminate
+.Sh SYNOPSIS
+.Nm
+.Op Fl v
+.Ar pid
+\&...
+.Sh DESCRIPTION
+The
+.Nm
+utility will wait until each of the given processes has terminated.
+.Pp
+The following option is available:
+.Bl -tag -width indent
+.It Fl v
+Print the exit status when each process terminates.
+.El
+.Sh DIAGNOSTICS
+The
+.Nm
+utility returns 0 on success, and >0 if an error occurs.
+.Pp
+Invalid pids elicit a warning message but are otherwise ignored.
+.Sh SEE ALSO
+.Xr kill 1 ,
+.Xr pkill 1 ,
+.Xr ps 1 ,
+.Xr wait 1 ,
+.Xr kqueue 2
+.Sh NOTES
+.Nm
+is not a substitute for the
+.Xr wait 1
+builtin
+as it will not clean up any zombies or state in the parent process.
+.Sh HISTORY
+A
+.Nm
+command first appeared in SunOS 5.8.
Index: src/usr.bin/pwait/pwait.c
diff -u /dev/null src/usr.bin/pwait/pwait.c:1.1
--- /dev/null Mon Mar 2 16:43:39 2015
+++ src/usr.bin/pwait/pwait.c Mon Mar 2 16:43:39 2015
@@ -0,0 +1,150 @@
+/* $NetBSD: pwait.c,v 1.1 2015/03/02 21:43:39 christos Exp $ */
+
+/*-
+ * Copyright (c) 2004-2009, Jilles Tjoelker
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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
+ * COPYRIGHT OWNER 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.
+ */
+
+#include <sys/cdefs.h>
+#ifdef __FBSDID
+__FBSDID("$FreeBSD: head/bin/pwait/pwait.c 245506 2013-01-16 18:15:25Z delphij $");
+#endif
+__RCSID("$NetBSD: pwait.c,v 1.1 2015/03/02 21:43:39 christos Exp $");
+
+#include <sys/types.h>
+#include <sys/event.h>
+#include <sys/time.h>
+#include <sys/wait.h>
+
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sysexits.h>
+#include <unistd.h>
+
+static void
+usage(void)
+{
+
+ fprintf(stderr, "usage: pwait [-v] pid ...\n");
+ exit(EX_USAGE);
+}
+
+/*
+ * pwait - wait for processes to terminate
+ */
+int
+main(int argc, char *argv[])
+{
+ int kq;
+ struct kevent *e;
+ int verbose = 0;
+ int opt, nleft, n, i, duplicate, status;
+ long pid;
+ char *s, *end;
+
+ while ((opt = getopt(argc, argv, "v")) != -1) {
+ switch (opt) {
+ case 'v':
+ verbose = 1;
+ break;
+ default:
+ usage();
+ /* NOTREACHED */
+ }
+ }
+
+ argc -= optind;
+ argv += optind;
+
+ if (argc == 0)
+ usage();
+
+ kq = kqueue();
+ if (kq == -1)
+ err(1, "kqueue");
+
+ e = malloc(argc * sizeof(struct kevent));
+ if (e == NULL)
+ err(1, "malloc");
+ nleft = 0;
+ for (n = 0; n < argc; n++) {
+ s = argv[n];
+ if (!strncmp(s, "/proc/", 6)) /* Undocumented Solaris compat */
+ s += 6;
+ errno = 0;
+ pid = strtol(s, &end, 10);
+ if (pid < 0 || *end != '\0' || errno != 0) {
+ warnx("%s: bad process id", s);
+ continue;
+ }
+ duplicate = 0;
+ for (i = 0; i < nleft; i++)
+ if (e[i].ident == (uintptr_t)pid)
+ duplicate = 1;
+ if (!duplicate) {
+ EV_SET(e + nleft, pid, EVFILT_PROC, EV_ADD, NOTE_EXIT,
+ 0, NULL);
+ if (kevent(kq, e + nleft, 1, NULL, 0, NULL) == -1)
+ warn("%ld", pid);
+ else
+ nleft++;
+ }
+ }
+
+ while (nleft > 0) {
+ n = kevent(kq, NULL, 0, e, nleft, NULL);
+ if (n == -1)
+ err(1, "kevent");
+ if (verbose)
+ for (i = 0; i < n; i++) {
+ status = e[i].data;
+ if (WIFEXITED(status))
+ printf("%ld: exited with status %d.\n",
+ (long)e[i].ident,
+ WEXITSTATUS(status));
+ else if (WIFSIGNALED(status))
+ printf("%ld: killed by signal %d.\n",
+ (long)e[i].ident,
+ WTERMSIG(status));
+ else
+ printf("%ld: terminated.\n",
+ (long)e[i].ident);
+ }
+ nleft -= n;
+ }
+
+ exit(EX_OK);
+}
