Annotation of src/usr.bin/nice/nice.c, Revision 1.3
1.3 ! kevlo 1: /* $OpenBSD: nice.c,v 1.2 1996/06/26 05:37:31 deraadt Exp $ */
1.1 deraadt 2: /* $NetBSD: nice.c,v 1.9 1995/08/31 23:30:58 jtc Exp $ */
3:
4: /*
5: * Copyright (c) 1989 The Regents of the University of California.
6: * All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by the University of
19: * California, Berkeley and its contributors.
20: * 4. Neither the name of the University nor the names of its contributors
21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: */
36:
37: #ifndef lint
38: char copyright[] =
39: "@(#) Copyright (c) 1989 The Regents of the University of California.\n\
40: All rights reserved.\n";
41: #endif /* not lint */
42:
43: #ifndef lint
44: #if 0
45: static char sccsid[] = "@(#)nice.c 5.4 (Berkeley) 6/1/90";
46: #endif
1.3 ! kevlo 47: static char rcsid[] = "$OpenBSD: nice.c,v 1.2 1996/06/26 05:37:31 deraadt Exp $";
1.1 deraadt 48: #endif /* not lint */
49:
50: #include <sys/types.h>
51: #include <sys/time.h>
52: #include <sys/resource.h>
53: #include <stdio.h>
54: #include <stdlib.h>
55: #include <string.h>
56: #include <locale.h>
57: #include <ctype.h>
58: #include <errno.h>
59: #include <err.h>
60: #include <unistd.h>
61:
62: #define DEFNICE 10
63:
1.3 ! kevlo 64: static void usage __P((void));
1.1 deraadt 65:
66: int
67: main(argc, argv)
68: int argc;
69: char **argv;
70: {
71: int niceness = DEFNICE;
72: int c;
73:
74: setlocale(LC_ALL, "");
75:
76: /* handle obsolete -number syntax */
77: if (argc > 1 && argv[1][0] == '-' && isdigit(argv[1][1])) {
78: niceness = atoi (argv[1] + 1);
79: argc--; argv++;
80: }
81:
82: while ((c = getopt (argc, argv, "n:")) != -1) {
83: switch (c) {
84: case 'n':
85: niceness = atoi (optarg);
86: break;
87:
88: case '?':
89: default:
90: usage();
91: break;
92: }
93: }
94: argc -= optind; argv += optind;
95:
96: if (argc == 0)
97: usage();
98:
99: errno = 0;
100: niceness += getpriority(PRIO_PROCESS, 0);
101: if (errno) {
102: err (1, "getpriority");
103: /* NOTREACHED */
104: }
105: if (setpriority(PRIO_PROCESS, 0, niceness)) {
106: warn ("setpriority");
107: }
108:
109: execvp(argv[0], &argv[0]);
110: err ((errno == ENOENT) ? 127 : 126, "%s", argv[0]);
111: /* NOTREACHED */
112: }
113:
114: static void
115: usage()
116: {
117: (void)fprintf(stderr,
118: "usage: nice [ -n increment ] utility [ argument ...]\n");
119:
120: exit(1);
121: }