1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1982, 1986, 1989, 1993 5 * The Regents of the University of California. 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. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/sysproto.h> 36 #include <sys/kernel.h> 37 #include <sys/priv.h> 38 #include <sys/proc.h> 39 #include <sys/lock.h> 40 #include <sys/mutex.h> 41 #include <sys/socket.h> 42 #include <sys/sysctl.h> 43 #include <sys/utsname.h> 44 45 #include <vm/vm_param.h> 46 47 #if defined(COMPAT_43) 48 49 int 50 ogethostname(struct thread *td, struct ogethostname_args *uap) 51 { 52 int name[2]; 53 size_t len = uap->len; 54 55 name[0] = CTL_KERN; 56 name[1] = KERN_HOSTNAME; 57 return (userland_sysctl(td, name, 2, uap->hostname, &len, 58 1, 0, 0, 0, 0)); 59 } 60 61 int 62 osethostname(struct thread *td, struct osethostname_args *uap) 63 { 64 int name[2]; 65 66 name[0] = CTL_KERN; 67 name[1] = KERN_HOSTNAME; 68 return (userland_sysctl(td, name, 2, 0, 0, 0, uap->hostname, 69 uap->len, 0, 0)); 70 } 71 72 #ifndef _SYS_SYSPROTO_H_ 73 struct ogethostid_args { 74 int dummy; 75 }; 76 #endif 77 /* ARGSUSED */ 78 int 79 ogethostid(struct thread *td, struct ogethostid_args *uap) 80 { 81 size_t len = sizeof(long); 82 int name[2]; 83 84 name[0] = CTL_KERN; 85 name[1] = KERN_HOSTID; 86 return (kernel_sysctl(td, name, 2, (long *)td->td_retval, &len, 87 NULL, 0, NULL, 0)); 88 } 89 90 int 91 osethostid(struct thread *td, struct osethostid_args *uap) 92 { 93 int name[2]; 94 95 name[0] = CTL_KERN; 96 name[1] = KERN_HOSTID; 97 return (kernel_sysctl(td, name, 2, NULL, NULL, &uap->hostid, 98 sizeof(uap->hostid), NULL, 0)); 99 } 100 101 int 102 oquota(struct thread *td, struct oquota_args *uap) 103 { 104 105 return (ENOSYS); 106 } 107 108 #define KINFO_PROC (0<<8) 109 #define KINFO_RT (1<<8) 110 /* UNUSED, was KINFO_VNODE (2<<8) */ 111 #define KINFO_FILE (3<<8) 112 #define KINFO_METER (4<<8) 113 #define KINFO_LOADAVG (5<<8) 114 #define KINFO_CLOCKRATE (6<<8) 115 116 /* Non-standard BSDI extension - only present on their 4.3 net-2 releases */ 117 #define KINFO_BSDI_SYSINFO (101<<8) 118 119 /* 120 * XXX this is bloat, but I hope it's better here than on the potentially 121 * limited kernel stack... -Peter 122 */ 123 124 static struct { 125 int bsdi_machine; /* "i386" on BSD/386 */ 126 /* ^^^ this is an offset to the string, relative to the struct start */ 127 char *pad0; 128 long pad1; 129 long pad2; 130 long pad3; 131 u_long pad4; 132 u_long pad5; 133 u_long pad6; 134 135 int bsdi_ostype; /* "BSD/386" on BSD/386 */ 136 int bsdi_osrelease; /* "1.1" on BSD/386 */ 137 long pad7; 138 long pad8; 139 char *pad9; 140 141 long pad10; 142 long pad11; 143 int pad12; 144 long pad13; 145 quad_t pad14; 146 long pad15; 147 148 struct timeval pad16; 149 /* we dont set this, because BSDI's uname used gethostname() instead */ 150 int bsdi_hostname; /* hostname on BSD/386 */ 151 152 /* the actual string data is appended here */ 153 154 } bsdi_si; 155 156 /* 157 * this data is appended to the end of the bsdi_si structure during copyout. 158 * The "char *" offsets are relative to the base of the bsdi_si struct. 159 * This contains "FreeBSD\02.0-BUILT-nnnnnn\0i386\0", and these strings 160 * should not exceed the length of the buffer here... (or else!! :-) 161 */ 162 static char bsdi_strings[80]; /* It had better be less than this! */ 163 164 int 165 ogetkerninfo(struct thread *td, struct ogetkerninfo_args *uap) 166 { 167 int error, name[6]; 168 size_t size; 169 u_int needed = 0; 170 171 switch (uap->op & 0xff00) { 172 case KINFO_RT: 173 name[0] = CTL_NET; 174 name[1] = PF_ROUTE; 175 name[2] = 0; 176 name[3] = (uap->op & 0xff0000) >> 16; 177 name[4] = uap->op & 0xff; 178 name[5] = uap->arg; 179 error = userland_sysctl(td, name, 6, uap->where, uap->size, 180 0, 0, 0, &size, 0); 181 break; 182 183 case KINFO_PROC: 184 name[0] = CTL_KERN; 185 name[1] = KERN_PROC; 186 name[2] = uap->op & 0xff; 187 name[3] = uap->arg; 188 error = userland_sysctl(td, name, 4, uap->where, uap->size, 189 0, 0, 0, &size, 0); 190 break; 191 192 case KINFO_FILE: 193 name[0] = CTL_KERN; 194 name[1] = KERN_FILE; 195 error = userland_sysctl(td, name, 2, uap->where, uap->size, 196 0, 0, 0, &size, 0); 197 break; 198 199 case KINFO_METER: 200 name[0] = CTL_VM; 201 name[1] = VM_TOTAL; 202 error = userland_sysctl(td, name, 2, uap->where, uap->size, 203 0, 0, 0, &size, 0); 204 break; 205 206 case KINFO_LOADAVG: 207 name[0] = CTL_VM; 208 name[1] = VM_LOADAVG; 209 error = userland_sysctl(td, name, 2, uap->where, uap->size, 210 0, 0, 0, &size, 0); 211 break; 212 213 case KINFO_CLOCKRATE: 214 name[0] = CTL_KERN; 215 name[1] = KERN_CLOCKRATE; 216 error = userland_sysctl(td, name, 2, uap->where, uap->size, 217 0, 0, 0, &size, 0); 218 break; 219 220 case KINFO_BSDI_SYSINFO: { 221 /* 222 * this is pretty crude, but it's just enough for uname() 223 * from BSDI's 1.x libc to work. 224 * 225 * *size gives the size of the buffer before the call, and 226 * the amount of data copied after a successful call. 227 * If successful, the return value is the amount of data 228 * available, which can be larger than *size. 229 * 230 * BSDI's 2.x product apparently fails with ENOMEM if *size 231 * is too small. 232 */ 233 234 u_int left; 235 char *s; 236 237 bzero((char *)&bsdi_si, sizeof(bsdi_si)); 238 bzero(bsdi_strings, sizeof(bsdi_strings)); 239 240 s = bsdi_strings; 241 242 bsdi_si.bsdi_ostype = (s - bsdi_strings) + sizeof(bsdi_si); 243 strcpy(s, ostype); 244 s += strlen(s) + 1; 245 246 bsdi_si.bsdi_osrelease = (s - bsdi_strings) + sizeof(bsdi_si); 247 strcpy(s, osrelease); 248 s += strlen(s) + 1; 249 250 bsdi_si.bsdi_machine = (s - bsdi_strings) + sizeof(bsdi_si); 251 strcpy(s, machine); 252 s += strlen(s) + 1; 253 254 needed = sizeof(bsdi_si) + (s - bsdi_strings); 255 256 if ((uap->where == NULL) || (uap->size == NULL)) { 257 /* process is asking how much buffer to supply.. */ 258 size = needed; 259 error = 0; 260 break; 261 } 262 263 if ((error = copyin(uap->size, &size, sizeof(size))) != 0) 264 break; 265 266 /* if too much buffer supplied, trim it down */ 267 if (size > needed) 268 size = needed; 269 270 /* how much of the buffer is remaining */ 271 left = size; 272 273 if ((error = copyout((char *)&bsdi_si, uap->where, left)) != 0) 274 break; 275 276 /* is there any point in continuing? */ 277 if (left > sizeof(bsdi_si)) { 278 left -= sizeof(bsdi_si); 279 error = copyout(&bsdi_strings, 280 uap->where + sizeof(bsdi_si), left); 281 } 282 break; 283 } 284 285 default: 286 error = EOPNOTSUPP; 287 break; 288 } 289 if (error == 0) { 290 td->td_retval[0] = needed ? needed : size; 291 if (uap->size) { 292 error = copyout(&size, uap->size, sizeof(size)); 293 } 294 } 295 return (error); 296 } 297 #endif /* COMPAT_43 */ 298 299 #ifdef COMPAT_FREEBSD4 300 /* 301 * This is the FreeBSD-1.1 compatible uname(2) interface. These days it is 302 * done in libc as a wrapper around a bunch of sysctl's. This must maintain 303 * the old 1.1 binary ABI. 304 */ 305 #if SYS_NMLN != 32 306 #error "FreeBSD-1.1 uname syscall has been broken" 307 #endif 308 #ifndef _SYS_SYSPROTO_H_ 309 struct uname_args { 310 struct utsname *name; 311 }; 312 #endif 313 /* ARGSUSED */ 314 int 315 freebsd4_uname(struct thread *td, struct freebsd4_uname_args *uap) 316 { 317 int name[2], error; 318 size_t len; 319 char *s, *us; 320 321 name[0] = CTL_KERN; 322 name[1] = KERN_OSTYPE; 323 len = sizeof (uap->name->sysname); 324 error = userland_sysctl(td, name, 2, uap->name->sysname, &len, 325 1, 0, 0, 0, 0); 326 if (error) 327 return (error); 328 subyte( uap->name->sysname + sizeof(uap->name->sysname) - 1, 0); 329 330 name[1] = KERN_HOSTNAME; 331 len = sizeof uap->name->nodename; 332 error = userland_sysctl(td, name, 2, uap->name->nodename, &len, 333 1, 0, 0, 0, 0); 334 if (error) 335 return (error); 336 subyte( uap->name->nodename + sizeof(uap->name->nodename) - 1, 0); 337 338 name[1] = KERN_OSRELEASE; 339 len = sizeof uap->name->release; 340 error = userland_sysctl(td, name, 2, uap->name->release, &len, 341 1, 0, 0, 0, 0); 342 if (error) 343 return (error); 344 subyte( uap->name->release + sizeof(uap->name->release) - 1, 0); 345 346 /* 347 name = KERN_VERSION; 348 len = sizeof uap->name->version; 349 error = userland_sysctl(td, name, 2, uap->name->version, &len, 350 1, 0, 0, 0, 0); 351 if (error) 352 return (error); 353 subyte( uap->name->version + sizeof(uap->name->version) - 1, 0); 354 */ 355 356 /* 357 * this stupid hackery to make the version field look like FreeBSD 1.1 358 */ 359 for(s = version; *s && *s != '#'; s++); 360 361 for(us = uap->name->version; *s && *s != ':'; s++) { 362 error = subyte( us++, *s); 363 if (error) 364 return (error); 365 } 366 error = subyte( us++, 0); 367 if (error) 368 return (error); 369 370 name[0] = CTL_HW; 371 name[1] = HW_MACHINE; 372 len = sizeof uap->name->machine; 373 error = userland_sysctl(td, name, 2, uap->name->machine, &len, 374 1, 0, 0, 0, 0); 375 if (error) 376 return (error); 377 subyte( uap->name->machine + sizeof(uap->name->machine) - 1, 0); 378 return (0); 379 } 380 381 #ifndef _SYS_SYSPROTO_H_ 382 struct getdomainname_args { 383 char *domainname; 384 int len; 385 }; 386 #endif 387 /* ARGSUSED */ 388 int 389 freebsd4_getdomainname(struct thread *td, 390 struct freebsd4_getdomainname_args *uap) 391 { 392 int name[2]; 393 size_t len = uap->len; 394 395 name[0] = CTL_KERN; 396 name[1] = KERN_NISDOMAINNAME; 397 return (userland_sysctl(td, name, 2, uap->domainname, &len, 398 1, 0, 0, 0, 0)); 399 } 400 401 #ifndef _SYS_SYSPROTO_H_ 402 struct setdomainname_args { 403 char *domainname; 404 int len; 405 }; 406 #endif 407 /* ARGSUSED */ 408 int 409 freebsd4_setdomainname(struct thread *td, 410 struct freebsd4_setdomainname_args *uap) 411 { 412 int name[2]; 413 414 name[0] = CTL_KERN; 415 name[1] = KERN_NISDOMAINNAME; 416 return (userland_sysctl(td, name, 2, 0, 0, 0, uap->domainname, 417 uap->len, 0, 0)); 418 } 419 #endif /* COMPAT_FREEBSD4 */ 420