BSD 4.4 Lite Usr.bin Sources

1 files changed, 128 insertions, 0 deletions

diff --git a/usr.bin/renice/renice.c b/usr.bin/renice/renice.c
new file mode 100644
index 0000000..6deba6b
--- /dev/null
+++ b/usr.bin/renice/renice.c
@@ -0,0 +1,128 @@
+/*
+ * 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. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 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.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1983, 1989, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)renice.c	8.1 (Berkeley) 6/9/93";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+
+#include <stdio.h>
+#include <pwd.h>
+
+/*
+ * Change the priority (nice) of processes
+ * or groups of processes which are already
+ * running.
+ */
+main(argc, argv)
+	char **argv;
+{
+	int which = PRIO_PROCESS;
+	int who = 0, prio, errs = 0;
+
+	argc--, argv++;
+	if (argc < 2) {
+		fprintf(stderr, "usage: renice priority [ [ -p ] pids ] ");
+		fprintf(stderr, "[ [ -g ] pgrps ] [ [ -u ] users ]\n");
+		exit(1);
+	}
+	prio = atoi(*argv);
+	argc--, argv++;
+	if (prio > PRIO_MAX)
+		prio = PRIO_MAX;
+	if (prio < PRIO_MIN)
+		prio = PRIO_MIN;
+	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) {
+			register struct passwd *pwd = getpwnam(*argv);
+			
+			if (pwd == NULL) {
+				fprintf(stderr, "renice: %s: unknown user\n",
+					*argv);
+				continue;
+			}
+			who = pwd->pw_uid;
+		} else {
+			who = atoi(*argv);
+			if (who < 0) {
+				fprintf(stderr, "renice: %s: bad value\n",
+					*argv);
+				continue;
+			}
+		}
+		errs += donice(which, who, prio);
+	}
+	exit(errs != 0);
+}
+
+donice(which, who, prio)
+	int which, who, prio;
+{
+	int oldprio;
+	extern int errno;
+
+	errno = 0, oldprio = getpriority(which, who);
+	if (oldprio == -1 && errno) {
+		fprintf(stderr, "renice: %d: ", who);
+		perror("getpriority");
+		return (1);
+	}
+	if (setpriority(which, who, prio) < 0) {
+		fprintf(stderr, "renice: %d: ", who);
+		perror("setpriority");
+		return (1);
+	}
+	printf("%d: old priority %d, new priority %d\n", who, oldprio, prio);
+	return (0);
+}