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 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 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 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) 232 233 NATIVE_SYSCTL2_GET(sysname, CTL_KERN, KERN_OSTYPE) { 234 } NATIVE_SET; 235 236 NATIVE_SYSCTL2_GET(hostname, CTL_KERN, KERN_HOSTNAME) { 237 } NATIVE_SET; 238 239 NATIVE_SYSCTL2_GET(release, CTL_KERN, KERN_OSRELEASE) { 240 } NATIVE_SET; 241 242 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; 252 253 NATIVE_SYSCTL2_GET(platform, CTL_HW, HW_MACHINE) { 254 } NATIVE_SET; 255 256 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 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 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 281 usage(void) 282 { 283 fprintf(stderr, "usage: uname [-aiKmnoprsUv]\n"); 284 exit(1); 285 } 286