Annotation of src/usr.bin/nice/nice.c, Revision 1.16
1.16 ! tb 1: /* $OpenBSD: nice.c,v 1.15 2015/10/19 18:53:35 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.
1.8 millert 16: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: */
32:
33: #include <sys/resource.h>
34: #include <stdio.h>
35: #include <stdlib.h>
36: #include <locale.h>
37: #include <ctype.h>
38: #include <errno.h>
39: #include <err.h>
40: #include <unistd.h>
41:
42: #define DEFNICE 10
43:
1.16 ! tb 44: static void __dead usage(void);
1.1 deraadt 45:
46: int
1.9 deraadt 47: main(int argc, char *argv[])
1.1 deraadt 48: {
1.14 tedu 49: const char *errstr;
50: int prio = DEFNICE;
1.1 deraadt 51: int c;
52:
53: setlocale(LC_ALL, "");
54:
1.15 deraadt 55: if (pledge("stdio exec proc", NULL) == -1)
56: err(1, "pledge");
57:
1.7 deraadt 58: /* handle obsolete -number syntax */
1.14 tedu 59: if (argc > 1 && argv[1][0] == '-' &&
60: isdigit((unsigned char)argv[1][1])) {
61: prio = strtonum(argv[1] + 1, PRIO_MIN, PRIO_MAX, &errstr);
62: if (errstr)
63: errx(1, "increment is %s", errstr);
1.7 deraadt 64: argc--;
65: argv++;
66: }
1.1 deraadt 67:
68: while ((c = getopt (argc, argv, "n:")) != -1) {
69: switch (c) {
70: case 'n':
1.14 tedu 71: prio = strtonum(optarg, PRIO_MIN, PRIO_MAX, &errstr);
72: if (errstr)
73: errx(1, "increment is %s", errstr);
1.1 deraadt 74: break;
75: default:
76: usage();
77: break;
78: }
79: }
1.13 tedu 80: argc -= optind;
81: argv += optind;
1.1 deraadt 82:
83: if (argc == 0)
84: usage();
85:
86: errno = 0;
1.14 tedu 87: prio += getpriority(PRIO_PROCESS, 0);
1.15 deraadt 88: if (errno)
1.7 deraadt 89: err(1, "getpriority");
1.14 tedu 90: if (setpriority(PRIO_PROCESS, 0, prio))
1.7 deraadt 91: warn("setpriority");
1.1 deraadt 92:
1.15 deraadt 93: if (pledge("stdio exec", NULL) == -1)
94: err(1, "pledge");
95:
1.1 deraadt 96: execvp(argv[0], &argv[0]);
1.7 deraadt 97: err((errno == ENOENT) ? 127 : 126, "%s", argv[0]);
1.1 deraadt 98: }
99:
1.16 ! tb 100: static void __dead
1.9 deraadt 101: usage(void)
1.1 deraadt 102: {
1.4 pvalchev 103: extern char *__progname;
1.10 sobrado 104: fprintf(stderr, "usage: %s [-n increment] utility [argument ...]\n",
1.4 pvalchev 105: __progname);
1.1 deraadt 106: exit(1);
107: }