1 files changed, 111 insertions, 0 deletions
diff --git a/usr.bin/nice/nice.c b/usr.bin/nice/nice.c
new file mode 100644
index 0000000..9fab9e4
--- /dev/null
+++ b/usr.bin/nice/nice.c
@@ -0,0 +1,111 @@
+/*
+ * Copyright (c) 1989, 1993, 1994
+ *	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.
+ * 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 const char copyright[] =
+"@(#) Copyright (c) 1989, 1993, 1994\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#if 0
+#ifndef lint
+static char sccsid[] = "@(#)nice.c	8.2 (Berkeley) 4/16/94";
+#endif /* not lint */
+#endif
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+
+#include <ctype.h>
+#include <err.h>
+#include <errno.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+
+#define	DEFNICE	10
+
+void usage(void);
+
+int
+main(int argc, char *argv[])
+{
+	long niceness = DEFNICE;
+	int ch;
+	char *ep;
+
+	/* Obsolescent syntax: -number, --number */
+	if (argc >= 2 && argv[1][0] == '-' && (argv[1][1] == '-' ||
+	    isdigit((unsigned char)argv[1][1])) && strcmp(argv[1], "--") != 0)
+		if (asprintf(&argv[1], "-n%s", argv[1] + 1) < 0)
+			err(1, "asprintf");
+
+	while ((ch = getopt(argc, argv, "n:")) != -1) {
+		switch (ch) {
+		case 'n':
+			errno = 0;
+			niceness = strtol(optarg, &ep, 10);
+			if (ep == optarg || *ep != '\0' || errno ||
+			    niceness < INT_MIN || niceness > INT_MAX)
+				errx(1, "%s: invalid nice value", optarg);
+			break;
+		default:
+			usage();
+		}
+	}
+	argc -= optind;
+	argv += optind;
+
+	if (argc == 0)
+		usage();
+
+	errno = 0;
+	niceness += getpriority(PRIO_PROCESS, 0);
+	if (errno)
+		warn("getpriority");
+	else if (setpriority(PRIO_PROCESS, 0, (int)niceness))
+		warn("setpriority");
+	execvp(*argv, argv);
+	err(errno == ENOENT ? 127 : 126, "%s", *argv);
+}
+
+void
+usage(void)
+{
+
+	(void)fprintf(stderr,
+	    "usage: nice [-n increment] utility [argument ...]\n");
+	exit(1);
+}