1 /*-
2 * Copyright (c) 2002 Juli Mallett.
3 * Copyright (c) 1993
4 * The Regents of the University of California. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed by the University of
17 * California, Berkeley and its contributors.
18 * 4. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35 #include <sys/cdefs.h>
36
37 __FBSDID("$FreeBSD$");
38
39 #ifndef lint
40 static const char copyright[] =
41 "@(#) Copyright (c) 1993\n\
42 The Regents of the University of California. All rights reserved.\n";
43 #endif
44
45 #ifndef lint
46 static const char sccsid[] = "@(#)uname.c 8.2 (Berkeley) 5/4/95";
47 #endif
48
49 #include <sys/param.h>
50 #include <sys/sysctl.h>
51
52 #include <err.h>
53 #include <stdio.h>
54 #include <stdlib.h>
55 #include <unistd.h>
56
57 #include <osreldate.h>
58
59 #define MFLAG 0x01
60 #define NFLAG 0x02
61 #define PFLAG 0x04
62 #define RFLAG 0x08
63 #define SFLAG 0x10
64 #define VFLAG 0x20
65 #define IFLAG 0x40
66 #define UFLAG 0x80
67 #define KFLAG 0x100
68
69 typedef void (*get_t)(void);
70 static get_t get_ident, get_platform, get_hostname, get_arch,
71 get_release, get_sysname, get_kernvers, get_uservers, get_version;
72
73 static void native_ident(void);
74 static void native_platform(void);
75 static void native_hostname(void);
76 static void native_arch(void);
77 static void native_release(void);
78 static void native_sysname(void);
79 static void native_version(void);
80 static void native_kernvers(void);
81 static void native_uservers(void);
82 static void print_uname(u_int);
83 static void setup_get(void);
84 static void usage(void);
85
86 static char *ident, *platform, *hostname, *arch, *release, *sysname, *version, *kernvers, *uservers;
87 static int space;
88
89 int
main(int argc,char * argv[])90 main(int argc, char *argv[])
91 {
92 u_int flags;
93 int ch;
94
95 setup_get();
96 flags = 0;
97
98 while ((ch = getopt(argc, argv, "aiKmnoprsUv")) != -1)
99 switch(ch) {
100 case 'a':
101 flags |= (MFLAG | NFLAG | RFLAG | SFLAG | VFLAG);
102 break;
103 case 'i':
104 flags |= IFLAG;
105 break;
106 case 'K':
107 flags |= KFLAG;
108 break;
109 case 'm':
110 flags |= MFLAG;
111 break;
112 case 'n':
113 flags |= NFLAG;
114 break;
115 case 'p':
116 flags |= PFLAG;
117 break;
118 case 'r':
119 flags |= RFLAG;
120 break;
121 case 's':
122 case 'o':
123 flags |= SFLAG;
124 break;
125 case 'U':
126 flags |= UFLAG;
127 break;
128 case 'v':
129 flags |= VFLAG;
130 break;
131 case '?':
132 default:
133 usage();
134 }
135
136 argc -= optind;
137 argv += optind;
138
139 if (argc)
140 usage();
141
142 if (!flags)
143 flags |= SFLAG;
144
145 print_uname(flags);
146 exit(0);
147 }
148
149 #define CHECK_ENV(opt,var) \
150 do { \
151 if ((var = getenv("UNAME_" opt)) == NULL) { \
152 get_##var = native_##var; \
153 } else { \
154 get_##var = (get_t)NULL; \
155 } \
156 } while (0)
157
158 static void
setup_get(void)159 setup_get(void)
160 {
161 CHECK_ENV("s", sysname);
162 CHECK_ENV("n", hostname);
163 CHECK_ENV("r", release);
164 CHECK_ENV("v", version);
165 CHECK_ENV("m", platform);
166 CHECK_ENV("p", arch);
167 CHECK_ENV("i", ident);
168 CHECK_ENV("K", kernvers);
169 CHECK_ENV("U", uservers);
170 }
171
172 #define PRINT_FLAG(flags,flag,var) \
173 if ((flags & flag) == flag) { \
174 if (space) \
175 printf(" "); \
176 else \
177 space++; \
178 if (get_##var != NULL) \
179 (*get_##var)(); \
180 printf("%s", var); \
181 }
182
183 static void
print_uname(u_int flags)184 print_uname(u_int flags)
185 {
186 PRINT_FLAG(flags, SFLAG, sysname);
187 PRINT_FLAG(flags, NFLAG, hostname);
188 PRINT_FLAG(flags, RFLAG, release);
189 PRINT_FLAG(flags, VFLAG, version);
190 PRINT_FLAG(flags, MFLAG, platform);
191 PRINT_FLAG(flags, PFLAG, arch);
192 PRINT_FLAG(flags, IFLAG, ident);
193 PRINT_FLAG(flags, KFLAG, kernvers);
194 PRINT_FLAG(flags, UFLAG, uservers);
195 printf("\n");
196 }
197
198 #define NATIVE_SYSCTL2_GET(var,mib0,mib1) \
199 static void \
200 native_##var(void) \
201 { \
202 int mib[] = { (mib0), (mib1) }; \
203 size_t len; \
204 static char buf[1024]; \
205 char **varp = &(var); \
206 \
207 len = sizeof buf; \
208 if (sysctl(mib, sizeof mib / sizeof mib[0], \
209 &buf, &len, NULL, 0) == -1) \
210 err(1, "sysctl");
211
212 #define NATIVE_SYSCTLNAME_GET(var,name) \
213 static void \
214 native_##var(void) \
215 { \
216 size_t len; \
217 static char buf[1024]; \
218 char **varp = &(var); \
219 \
220 len = sizeof buf; \
221 if (sysctlbyname(name, &buf, &len, NULL,\
222 0) == -1) \
223 err(1, "sysctlbyname");
224
225 #define NATIVE_SET \
226 *varp = buf; \
227 return; \
228 } struct __hack
229
230 #define NATIVE_BUFFER (buf)
231 #define NATIVE_LENGTH (len)
232
NATIVE_SYSCTL2_GET(sysname,CTL_KERN,KERN_OSTYPE)233 NATIVE_SYSCTL2_GET(sysname, CTL_KERN, KERN_OSTYPE) {
234 } NATIVE_SET;
235
NATIVE_SYSCTL2_GET(hostname,CTL_KERN,KERN_HOSTNAME)236 NATIVE_SYSCTL2_GET(hostname, CTL_KERN, KERN_HOSTNAME) {
237 } NATIVE_SET;
238
NATIVE_SYSCTL2_GET(release,CTL_KERN,KERN_OSRELEASE)239 NATIVE_SYSCTL2_GET(release, CTL_KERN, KERN_OSRELEASE) {
240 } NATIVE_SET;
241
NATIVE_SYSCTL2_GET(version,CTL_KERN,KERN_VERSION)242 NATIVE_SYSCTL2_GET(version, CTL_KERN, KERN_VERSION) {
243 size_t n;
244 char *p;
245
246 p = NATIVE_BUFFER;
247 n = NATIVE_LENGTH;
248 for (; n--; ++p)
249 if (*p == '\n' || *p == '\t')
250 *p = ' ';
251 } NATIVE_SET;
252
NATIVE_SYSCTL2_GET(platform,CTL_HW,HW_MACHINE)253 NATIVE_SYSCTL2_GET(platform, CTL_HW, HW_MACHINE) {
254 } NATIVE_SET;
255
NATIVE_SYSCTL2_GET(arch,CTL_HW,HW_MACHINE_ARCH)256 NATIVE_SYSCTL2_GET(arch, CTL_HW, HW_MACHINE_ARCH) {
257 } NATIVE_SET;
258
259 NATIVE_SYSCTLNAME_GET(ident, "kern.ident") {
260 } NATIVE_SET;
261
262 static void
native_uservers(void)263 native_uservers(void)
264 {
265 static char buf[128];
266
267 snprintf(buf, sizeof(buf), "%d", __FreeBSD_version);
268 uservers = buf;
269 }
270
271 static void
native_kernvers(void)272 native_kernvers(void)
273 {
274 static char buf[128];
275
276 snprintf(buf, sizeof(buf), "%d", getosreldate());
277 kernvers = buf;
278 }
279
280 static void
usage(void)281 usage(void)
282 {
283 fprintf(stderr, "usage: uname [-aiKmnoprsUv]\n");
284 exit(1);
285 }
286