1 /* $OpenBSD: uname.c,v 1.19 2016/10/28 07:22:59 schwarze Exp $ */
2
3 /*
4 * Copyright (c) 1994 Winning Strategies, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by Winning Strategies, Inc.
18 * 4. The name of Winning Strategies, Inc. may not be used to endorse or
19 * promote products derived from this software without specific prior
20 * written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34 #include <sys/param.h> /* MACHINE_ARCH */
35 #include <sys/utsname.h>
36
37 #include <err.h>
38 #include <stdio.h>
39 #include <stdlib.h>
40 #include <unistd.h>
41
42 static void __dead usage(void);
43
44 #define PRINT_SYSNAME 0x01
45 #define PRINT_NODENAME 0x02
46 #define PRINT_RELEASE 0x04
47 #define PRINT_VERSION 0x08
48 #define PRINT_MACHINE 0x10
49 #define PRINT_ALL 0x1f
50 #define PRINT_MACHINE_ARCH 0x20
51
52 int
main(int argc,char * argv[])53 main(int argc, char *argv[])
54 {
55 struct utsname u;
56 int c;
57 int space = 0;
58 int print_mask = 0;
59
60 if (pledge("stdio", NULL) == -1)
61 err(1, "pledge");
62
63 while ((c = getopt(argc, argv, "amnrsvp")) != -1 ) {
64 switch (c) {
65 case 'a':
66 print_mask |= PRINT_ALL;
67 break;
68 case 'm':
69 print_mask |= PRINT_MACHINE;
70 break;
71 case 'n':
72 print_mask |= PRINT_NODENAME;
73 break;
74 case 'p':
75 print_mask |= PRINT_MACHINE_ARCH;
76 break;
77 case 'r':
78 print_mask |= PRINT_RELEASE;
79 break;
80 case 's':
81 print_mask |= PRINT_SYSNAME;
82 break;
83 case 'v':
84 print_mask |= PRINT_VERSION;
85 break;
86 default:
87 usage();
88 }
89 }
90
91 if (optind != argc)
92 usage();
93
94 if (!print_mask)
95 print_mask = PRINT_SYSNAME;
96
97 if (uname(&u) == -1)
98 err(1, NULL);
99
100 if (print_mask & PRINT_SYSNAME) {
101 space++;
102 fputs(u.sysname, stdout);
103 }
104 if (print_mask & PRINT_NODENAME) {
105 if (space++)
106 putchar(' ');
107
108 fputs(u.nodename, stdout);
109 }
110 if (print_mask & PRINT_RELEASE) {
111 if (space++)
112 putchar(' ');
113
114 fputs(u.release, stdout);
115 }
116 if (print_mask & PRINT_VERSION) {
117 if (space++)
118 putchar(' ');
119
120 fputs(u.version, stdout);
121 }
122 if (print_mask & PRINT_MACHINE) {
123 if (space++)
124 putchar(' ');
125
126 fputs(u.machine, stdout);
127 }
128 if (print_mask & PRINT_MACHINE_ARCH) {
129 if (space++)
130 putchar(' ');
131
132 fputs(MACHINE_ARCH, stdout);
133 }
134 putchar('\n');
135
136 return 0;
137 }
138
139 static void __dead
usage(void)140 usage(void)
141 {
142 fprintf(stderr, "usage: uname [-amnprsv]\n");
143 exit(1);
144 }
145