initial population

1 files changed, 181 insertions, 0 deletions

diff --git a/usr.bin/renice/renice.c b/usr.bin/renice/renice.c
new file mode 100644
index 0000000..977f081
--- /dev/null
+++ b/usr.bin/renice/renice.c
@@ -0,0 +1,181 @@
+/*	$NetBSD: renice.c,v 1.18 2008/07/21 14:19:25 lukem Exp $	*/
+
+/*
+ * Copyright (c) 1983, 1989, 1993
+ *	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.
+ * 3. 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.
+ */
+
+#include <sys/cdefs.h>
+#ifndef lint
+__COPYRIGHT("@(#) Copyright (c) 1983, 1989, 1993\
+ The Regents of the University of California.  All rights reserved.");
+#endif /* not lint */
+
+#ifndef lint
+/*static char sccsid[] = "from: @(#)renice.c	8.1 (Berkeley) 6/9/93";*/
+__RCSID("$NetBSD: renice.c,v 1.18 2008/07/21 14:19:25 lukem Exp $");
+#endif /* not lint */
+
+#include <sys/resource.h>
+
+#include <err.h>
+#include <errno.h>
+#include <limits.h>
+#include <pwd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sysexits.h>
+
+static int	getnum(const char *, const char *, int *);
+static int	donice(int, id_t, int, int);
+static void	usage(void) __dead;
+
+/*
+ * Change the priority (nice) of processes
+ * or groups of processes which are already
+ * running.
+ */
+int
+main(int argc, char **argv)
+{
+	int which = PRIO_PROCESS;
+	int prio, errs = 0, incr = 0;
+	id_t who = 0;
+
+	argc--, argv++;
+	if (argc < 2)
+		usage();
+	if (strcmp(*argv, "-n") == 0) {
+		incr = 1;
+		argc--, argv++;
+		if (argc == 0)
+			usage();
+	}
+	if (getnum("priority", *argv, &prio))
+		return 1;
+	argc--, argv++;
+	for (; argc > 0; argc--, argv++) {
+		if (strcmp(*argv, "-g") == 0) {
+			which = PRIO_PGRP;
+			continue;
+		}
+		if (strcmp(*argv, "-u") == 0) {
+			which = PRIO_USER;
+			continue;
+		}
+		if (strcmp(*argv, "-p") == 0) {
+			which = PRIO_PROCESS;
+			continue;
+		}
+		if (which == PRIO_USER) {
+			struct passwd *pwd = getpwnam(*argv);
+			
+			if (pwd == NULL) {
+				warnx("%s: unknown user", *argv);
+				errs++;
+				continue;
+			}
+			who = (id_t)pwd->pw_uid;
+		} else {
+			int twho;
+			if (getnum("pid", *argv, &twho)) {
+				errs++;
+				continue;
+			}
+			if (twho < 0) {
+				warnx("%s: bad value", *argv);
+				errs++;
+				continue;
+			}
+			who = (id_t)twho;
+		}
+		errs += donice(which, who, prio, incr);
+	}
+	return errs == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
+}
+
+static int
+getnum(const char *com, const char *str, int *val)
+{
+	long v;
+	char *ep;
+
+	errno = 0;
+	v = strtol(str, &ep, 0);
+
+	if (*ep) {
+		warnx("Bad %s argument: %s", com, str);
+		return 1;
+	}
+	if ((v == LONG_MIN || v == LONG_MAX) && errno == ERANGE) {
+		warn("Invalid %s argument: %s", com, str);
+		return 1;
+	}
+
+	*val = (int)v;
+	return 0;
+}
+
+static int
+donice(int which, id_t who, int prio, int incr)
+{
+	int oldprio;
+
+	errno = 0;
+	if ((oldprio = getpriority(which, who)) == -1 && errno != 0) {
+		warn("%d: getpriority", who);
+		return 1;
+	}
+
+	if (incr)
+		prio = oldprio + prio;
+
+	if (prio > PRIO_MAX)
+		prio = PRIO_MAX;
+	if (prio < PRIO_MIN)
+		prio = PRIO_MIN;
+
+	if (setpriority(which, who, prio) == -1) {
+		warn("%d: setpriority", who);
+		return 1;
+	}
+	(void)printf("%d: old priority %d, new priority %d\n",
+	    who, oldprio, prio);
+	return 0;
+}
+
+static void
+usage(void)
+{
+
+	(void)fprintf(stderr, "Usage: %s [<priority> | -n <incr>] ",
+	    getprogname());
+	(void)fprintf(stderr, "[[-p] <pids>...] [-g <pgrp>...] ");
+	(void)fprintf(stderr, "[-u <user>...]\n");
+	exit(1);
+}