1 /*- 2 * SPDX-License-Identifier: BSD-4-Clause 3 * 4 * Copyright (c) 2002 Juli Mallett. 5 * Copyright (c) 1993 6 * The Regents of the University of California. 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. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 38 #ifndef lint 39 static const char copyright[] = 40 "@(#) Copyright (c) 1993\n\ 41 The Regents of the University of California. All rights reserved.\n"; 42 #endif 43 44 45 #include <sys/param.h> 46 #include <sys/sysctl.h> 47 48 #include <err.h> 49 #include <stdio.h> 50 #include <stdlib.h> 51 #include <unistd.h> 52 53 #include <osreldate.h> 54 55 #define MFLAG 0x01 56 #define NFLAG 0x02 57 #define PFLAG 0x04 58 #define RFLAG 0x08 59 #define SFLAG 0x10 60 #define VFLAG 0x20 61 #define IFLAG 0x40 62 #define UFLAG 0x80 63 #define KFLAG 0x100 64 #define BFLAG 0x200 65 66 typedef void (*get_t)(void); 67 static get_t get_buildid, get_ident, get_platform, get_hostname, get_arch, 68 get_release, get_sysname, get_kernvers, get_uservers, get_version; 69 70 static void native_ident(void); 71 static void native_platform(void); 72 static void native_hostname(void); 73 static void native_arch(void); 74 static void native_release(void); 75 static void native_sysname(void); 76 static void native_version(void); 77 static void native_kernvers(void); 78 static void native_uservers(void); 79 static void native_buildid(void); 80 static void print_uname(u_int); 81 static void setup_get(void); 82 static void usage(void) __dead2; 83 84 static char *buildid, *ident, *platform, *hostname, *arch, *release, *sysname, 85 *version, *kernvers, *uservers; 86 static int space; 87 88 int 89 main(int argc, char *argv[]) 90 { 91 u_int flags; 92 int ch; 93 94 setup_get(); 95 flags = 0; 96 97 while ((ch = getopt(argc, argv, "abiKmnoprsUv")) != -1) 98 switch(ch) { 99 case 'a': 100 flags |= (MFLAG | NFLAG | RFLAG | SFLAG | VFLAG); 101 break; 102 case 'b': 103 flags |= BFLAG; 104 break; 105 case 'i': 106 flags |= IFLAG; 107 break; 108 case 'K': 109 flags |= KFLAG; 110 break; 111 case 'm': 112 flags |= MFLAG; 113 break; 114 case 'n': 115 flags |= NFLAG; 116 break; 117 case 'p': 118 flags |= PFLAG; 119 break; 120 case 'r': 121 flags |= RFLAG; 122 break; 123 case 's': 124 case 'o': 125 flags |= SFLAG; 126 break; 127 case 'U': 128 flags |= UFLAG; 129 break; 130 case 'v': 131 flags |= VFLAG; 132 break; 133 case '?': 134 default: 135 usage(); 136 } 137 138 argc -= optind; 139 argv += optind; 140 141 if (argc) 142 usage(); 143 144 if (!flags) 145 flags |= SFLAG; 146 147 print_uname(flags); 148 exit(0); 149 } 150 151 #define CHECK_ENV(opt,var) \ 152 do { \ 153 if ((var = getenv("UNAME_" opt)) == NULL) { \ 154 get_##var = native_##var; \ 155 } else { \ 156 get_##var = (get_t)NULL; \ 157 } \ 158 } while (0) 159 160 static void 161 setup_get(void) 162 { 163 CHECK_ENV("s", sysname); 164 CHECK_ENV("n", hostname); 165 CHECK_ENV("r", release); 166 CHECK_ENV("v", version); 167 CHECK_ENV("m", platform); 168 CHECK_ENV("p", arch); 169 CHECK_ENV("i", ident); 170 CHECK_ENV("K", kernvers); 171 CHECK_ENV("U", uservers); 172 CHECK_ENV("b", buildid); 173 } 174 175 #define PRINT_FLAG(flags,flag,var) \ 176 if ((flags & flag) == flag) { \ 177 if (space) \ 178 printf(" "); \ 179 else \ 180 space++; \ 181 if (get_##var != NULL) \ 182 (*get_##var)(); \ 183 printf("%s", var); \ 184 } 185 186 static void 187 print_uname(u_int flags) 188 { 189 PRINT_FLAG(flags, SFLAG, sysname); 190 PRINT_FLAG(flags, NFLAG, hostname); 191 PRINT_FLAG(flags, RFLAG, release); 192 PRINT_FLAG(flags, VFLAG, version); 193 PRINT_FLAG(flags, MFLAG, platform); 194 PRINT_FLAG(flags, PFLAG, arch); 195 PRINT_FLAG(flags, IFLAG, ident); 196 PRINT_FLAG(flags, KFLAG, kernvers); 197 PRINT_FLAG(flags, UFLAG, uservers); 198 PRINT_FLAG(flags, BFLAG, buildid); 199 printf("\n"); 200 } 201 202 #define NATIVE_SYSCTL2_GET(var,mib0,mib1) \ 203 static void \ 204 native_##var(void) \ 205 { \ 206 int mib[] = { (mib0), (mib1) }; \ 207 size_t len; \ 208 static char buf[1024]; \ 209 char **varp = &(var); \ 210 \ 211 len = sizeof buf; \ 212 if (sysctl(mib, sizeof mib / sizeof mib[0], \ 213 &buf, &len, NULL, 0) == -1) \ 214 err(1, "sysctl"); 215 216 #define NATIVE_SYSCTLNAME_GET(var,name) \ 217 static void \ 218 native_##var(void) \ 219 { \ 220 size_t len; \ 221 static char buf[1024]; \ 222 char **varp = &(var); \ 223 \ 224 len = sizeof buf; \ 225 if (sysctlbyname(name, &buf, &len, NULL,\ 226 0) == -1) \ 227 err(1, "sysctlbyname"); 228 229 #define NATIVE_SET \ 230 *varp = buf; \ 231 return; \ 232 } struct __hack 233 234 #define NATIVE_BUFFER (buf) 235 #define NATIVE_LENGTH (len) 236 237 NATIVE_SYSCTL2_GET(sysname, CTL_KERN, KERN_OSTYPE) { 238 } NATIVE_SET; 239 240 NATIVE_SYSCTL2_GET(hostname, CTL_KERN, KERN_HOSTNAME) { 241 } NATIVE_SET; 242 243 NATIVE_SYSCTL2_GET(release, CTL_KERN, KERN_OSRELEASE) { 244 } NATIVE_SET; 245 246 NATIVE_SYSCTL2_GET(version, CTL_KERN, KERN_VERSION) { 247 size_t n; 248 char *p; 249 250 p = NATIVE_BUFFER; 251 n = NATIVE_LENGTH; 252 for (; n--; ++p) 253 if (*p == '\n' || *p == '\t') { 254 if (n > 1) 255 *p = ' '; 256 else 257 *p = '\0'; 258 } 259 } NATIVE_SET; 260 261 NATIVE_SYSCTL2_GET(platform, CTL_HW, HW_MACHINE) { 262 } NATIVE_SET; 263 264 NATIVE_SYSCTL2_GET(arch, CTL_HW, HW_MACHINE_ARCH) { 265 } NATIVE_SET; 266 267 NATIVE_SYSCTLNAME_GET(ident, "kern.ident") { 268 } NATIVE_SET; 269 270 NATIVE_SYSCTLNAME_GET(buildid, "kern.build_id") { 271 } NATIVE_SET; 272 273 static void 274 native_uservers(void) 275 { 276 static char buf[128]; 277 278 snprintf(buf, sizeof(buf), "%d", __FreeBSD_version); 279 uservers = buf; 280 } 281 282 static void 283 native_kernvers(void) 284 { 285 static char buf[128]; 286 287 snprintf(buf, sizeof(buf), "%d", getosreldate()); 288 kernvers = buf; 289 } 290 291 static void 292 usage(void) 293 { 294 fprintf(stderr, "usage: uname [-abiKmnoprsUv]\n"); 295 exit(1); 296 } 297