1*7c478bd9Sstevel@tonic-gate /*
2*7c478bd9Sstevel@tonic-gate * CDDL HEADER START
3*7c478bd9Sstevel@tonic-gate *
4*7c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*7c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*7c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*7c478bd9Sstevel@tonic-gate * with the License.
8*7c478bd9Sstevel@tonic-gate *
9*7c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*7c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*7c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions
12*7c478bd9Sstevel@tonic-gate * and limitations under the License.
13*7c478bd9Sstevel@tonic-gate *
14*7c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*7c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*7c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*7c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*7c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*7c478bd9Sstevel@tonic-gate *
20*7c478bd9Sstevel@tonic-gate * CDDL HEADER END
21*7c478bd9Sstevel@tonic-gate */
22*7c478bd9Sstevel@tonic-gate /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
23*7c478bd9Sstevel@tonic-gate /* All Rights Reserved */
24*7c478bd9Sstevel@tonic-gate
25*7c478bd9Sstevel@tonic-gate
26*7c478bd9Sstevel@tonic-gate /*
27*7c478bd9Sstevel@tonic-gate * Copyright 2000-2003 Sun Microsystems, Inc. All rights reserved.
28*7c478bd9Sstevel@tonic-gate * Use is subject to license terms.
29*7c478bd9Sstevel@tonic-gate */
30*7c478bd9Sstevel@tonic-gate
31*7c478bd9Sstevel@tonic-gate /*
32*7c478bd9Sstevel@tonic-gate ** nice
33*7c478bd9Sstevel@tonic-gate */
34*7c478bd9Sstevel@tonic-gate
35*7c478bd9Sstevel@tonic-gate
36*7c478bd9Sstevel@tonic-gate #include <stdio.h>
37*7c478bd9Sstevel@tonic-gate #include <locale.h>
38*7c478bd9Sstevel@tonic-gate #include <stdlib.h>
39*7c478bd9Sstevel@tonic-gate #include <string.h>
40*7c478bd9Sstevel@tonic-gate #include <unistd.h>
41*7c478bd9Sstevel@tonic-gate #include <errno.h>
42*7c478bd9Sstevel@tonic-gate
43*7c478bd9Sstevel@tonic-gate
44*7c478bd9Sstevel@tonic-gate static void usage(void);
45*7c478bd9Sstevel@tonic-gate
46*7c478bd9Sstevel@tonic-gate int
main(int argc,char * argv[])47*7c478bd9Sstevel@tonic-gate main(int argc, char *argv[])
48*7c478bd9Sstevel@tonic-gate {
49*7c478bd9Sstevel@tonic-gate long nicarg = 10;
50*7c478bd9Sstevel@tonic-gate
51*7c478bd9Sstevel@tonic-gate (void) setlocale(LC_ALL, "");
52*7c478bd9Sstevel@tonic-gate #if !defined(TEXT_DOMAIN)
53*7c478bd9Sstevel@tonic-gate #define TEXT_DOMAIN "SYS_TEST"
54*7c478bd9Sstevel@tonic-gate #endif
55*7c478bd9Sstevel@tonic-gate (void) textdomain(TEXT_DOMAIN);
56*7c478bd9Sstevel@tonic-gate
57*7c478bd9Sstevel@tonic-gate
58*7c478bd9Sstevel@tonic-gate if (argc < 2)
59*7c478bd9Sstevel@tonic-gate usage();
60*7c478bd9Sstevel@tonic-gate
61*7c478bd9Sstevel@tonic-gate
62*7c478bd9Sstevel@tonic-gate if (argv[1][0] == '-') {
63*7c478bd9Sstevel@tonic-gate if (strcmp(argv[1], "--") == 0) {
64*7c478bd9Sstevel@tonic-gate argv++;
65*7c478bd9Sstevel@tonic-gate argc--;
66*7c478bd9Sstevel@tonic-gate } else {
67*7c478bd9Sstevel@tonic-gate register char *p = argv[1];
68*7c478bd9Sstevel@tonic-gate char *nicarg_str;
69*7c478bd9Sstevel@tonic-gate char *end_ptr;
70*7c478bd9Sstevel@tonic-gate
71*7c478bd9Sstevel@tonic-gate if (*++p == 'n') { /* -n55 new form, XCU4 */
72*7c478bd9Sstevel@tonic-gate /*
73*7c478bd9Sstevel@tonic-gate * for situations like -n-10
74*7c478bd9Sstevel@tonic-gate * else case assigns p instead of argv
75*7c478bd9Sstevel@tonic-gate */
76*7c478bd9Sstevel@tonic-gate if (!(*++p)) {
77*7c478bd9Sstevel@tonic-gate /* Next arg is priority */
78*7c478bd9Sstevel@tonic-gate argv++;
79*7c478bd9Sstevel@tonic-gate argc--;
80*7c478bd9Sstevel@tonic-gate if (argc < 2)
81*7c478bd9Sstevel@tonic-gate usage();
82*7c478bd9Sstevel@tonic-gate nicarg_str = argv[1];
83*7c478bd9Sstevel@tonic-gate } else {
84*7c478bd9Sstevel@tonic-gate /* Priority embedded eg. -n-10 */
85*7c478bd9Sstevel@tonic-gate nicarg_str = p;
86*7c478bd9Sstevel@tonic-gate }
87*7c478bd9Sstevel@tonic-gate } else { /* -55 obs form, XCU4 */
88*7c478bd9Sstevel@tonic-gate nicarg_str = &argv[1][1];
89*7c478bd9Sstevel@tonic-gate }
90*7c478bd9Sstevel@tonic-gate nicarg = strtol(nicarg_str, &end_ptr, 10);
91*7c478bd9Sstevel@tonic-gate if (*end_ptr) {
92*7c478bd9Sstevel@tonic-gate (void) fprintf(stderr,
93*7c478bd9Sstevel@tonic-gate gettext("nice: argument must be numeric.\n"));
94*7c478bd9Sstevel@tonic-gate usage();
95*7c478bd9Sstevel@tonic-gate }
96*7c478bd9Sstevel@tonic-gate
97*7c478bd9Sstevel@tonic-gate if( --argc < 2 )
98*7c478bd9Sstevel@tonic-gate usage();
99*7c478bd9Sstevel@tonic-gate
100*7c478bd9Sstevel@tonic-gate argv++;
101*7c478bd9Sstevel@tonic-gate if (strcmp(argv[1], "--") == 0) {
102*7c478bd9Sstevel@tonic-gate argv++;
103*7c478bd9Sstevel@tonic-gate argc--;
104*7c478bd9Sstevel@tonic-gate }
105*7c478bd9Sstevel@tonic-gate }
106*7c478bd9Sstevel@tonic-gate }
107*7c478bd9Sstevel@tonic-gate
108*7c478bd9Sstevel@tonic-gate if (argc < 2)
109*7c478bd9Sstevel@tonic-gate usage();
110*7c478bd9Sstevel@tonic-gate
111*7c478bd9Sstevel@tonic-gate errno = 0;
112*7c478bd9Sstevel@tonic-gate if (nice(nicarg) == -1) {
113*7c478bd9Sstevel@tonic-gate /*
114*7c478bd9Sstevel@tonic-gate * Could be an error or a legitimate return value.
115*7c478bd9Sstevel@tonic-gate * The only error we care about is EINVAL, which will
116*7c478bd9Sstevel@tonic-gate * be returned by the scheduling class we are in if
117*7c478bd9Sstevel@tonic-gate * nice is invalid for this class.
118*7c478bd9Sstevel@tonic-gate * For any error other than EINVAL
119*7c478bd9Sstevel@tonic-gate * we will go ahead and exec the command even though
120*7c478bd9Sstevel@tonic-gate * the priority change failed.
121*7c478bd9Sstevel@tonic-gate */
122*7c478bd9Sstevel@tonic-gate if (errno == EINVAL) {
123*7c478bd9Sstevel@tonic-gate (void) fprintf(stderr, gettext(
124*7c478bd9Sstevel@tonic-gate "nice: invalid operation; "
125*7c478bd9Sstevel@tonic-gate "scheduling class does not support nice\n"));
126*7c478bd9Sstevel@tonic-gate return (2);
127*7c478bd9Sstevel@tonic-gate }
128*7c478bd9Sstevel@tonic-gate }
129*7c478bd9Sstevel@tonic-gate (void) execvp(argv[1], &argv[1]);
130*7c478bd9Sstevel@tonic-gate (void) fprintf(stderr, gettext("%s: %s\n"), strerror(errno), argv[1]);
131*7c478bd9Sstevel@tonic-gate /*
132*7c478bd9Sstevel@tonic-gate * POSIX.2 exit status:
133*7c478bd9Sstevel@tonic-gate * 127 if utility is not found.
134*7c478bd9Sstevel@tonic-gate * 126 if utility cannot be invoked.
135*7c478bd9Sstevel@tonic-gate */
136*7c478bd9Sstevel@tonic-gate return (errno == ENOENT || errno == ENOTDIR ? 127 : 126);
137*7c478bd9Sstevel@tonic-gate }
138*7c478bd9Sstevel@tonic-gate
139*7c478bd9Sstevel@tonic-gate static void
usage()140*7c478bd9Sstevel@tonic-gate usage()
141*7c478bd9Sstevel@tonic-gate {
142*7c478bd9Sstevel@tonic-gate (void) fprintf(stderr,
143*7c478bd9Sstevel@tonic-gate gettext("nice: usage: nice [-n increment] utility [argument ...]\n"));
144*7c478bd9Sstevel@tonic-gate exit(2);
145*7c478bd9Sstevel@tonic-gate }
146