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 * @(#)kern_xxx.c 8.2 (Berkeley) 11/14/93 32 */ 33 34 #include <sys/cdefs.h> 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/sysproto.h> 38 #include <sys/kernel.h> 39 #include <sys/priv.h> 40 #include <sys/proc.h> 41 #include <sys/lock.h> 42 #include <sys/mutex.h> 43 #include <sys/socket.h> 44 #include <sys/sysctl.h> 45 #include <sys/utsname.h> 46 47 #include <vm/vm_param.h> 48 49 #if defined(COMPAT_43) 50 51 int 52 ogethostname(struct thread *td, struct ogethostname_args *uap) 53 { 54 int name[2]; 55 size_t len = uap->len; 56 57 name[0] = CTL_KERN; 58 name[1] = KERN_HOSTNAME; 59 return (userland_sysctl(td, name, 2, uap->hostname, &len, 60 1, 0, 0, 0, 0)); 61 } 62 63 int 64 osethostname(struct thread *td, struct osethostname_args *uap) 65 { 66 int name[2]; 67 68 name[0] = CTL_KERN; 69 name[1] = KERN_HOSTNAME; 70 return (userland_sysctl(td, name, 2, 0, 0, 0, uap->hostname, 71 uap->len, 0, 0)); 72 } 73 74 #ifndef _SYS_SYSPROTO_H_ 75 struct ogethostid_args { 76 int dummy; 77 }; 78 #endif 79 /* ARGSUSED */ 80 int 81 ogethostid(struct thread *td, struct ogethostid_args *uap) 82 { 83 size_t len = sizeof(long); 84 int name[2]; 85 86 name[0] = CTL_KERN; 87 name[1] = KERN_HOSTID; 88 return (kernel_sysctl(td, name, 2, (long *)td->td_retval, &len, 89 NULL, 0, NULL, 0)); 90 } 91 92 int 93 osethostid(struct thread *td, struct osethostid_args *uap) 94 { 95 int name[2]; 96 97 name[0] = CTL_KERN; 98 name[1] = KERN_HOSTID; 99 return (kernel_sysctl(td, name, 2, NULL, NULL, &uap->hostid, 100 sizeof(uap->hostid), NULL, 0)); 101 } 102 103 int 104 oquota(struct thread *td, struct oquota_args *uap) 105 { 106 107 return (ENOSYS); 108 } 109 110 #define KINFO_PROC (0<<8) 111 #define KINFO_RT (1<<8) 112 /* UNUSED, was KINFO_VNODE (2<<8) */ 113 #define KINFO_FILE (3<<8) 114 #define KINFO_METER (4<<8) 115 #define KINFO_LOADAVG (5<<8) 116 #define KINFO_CLOCKRATE (6<<8) 117 118 /* Non-standard BSDI extension - only present on their 4.3 net-2 releases */ 119 #define KINFO_BSDI_SYSINFO (101<<8) 120 121 /* 122 * XXX this is bloat, but I hope it's better here than on the potentially 123 * limited kernel stack... -Peter 124 */ 125 126 static struct { 127 int bsdi_machine; /* "i386" on BSD/386 */ 128 /* ^^^ this is an offset to the string, relative to the struct start */ 129 char *pad0; 130 long pad1; 131 long pad2; 132 long pad3; 133 u_long pad4; 134 u_long pad5; 135 u_long pad6; 136 137 int bsdi_ostype; /* "BSD/386" on BSD/386 */ 138 int bsdi_osrelease; /* "1.1" on BSD/386 */ 139 long pad7; 140 long pad8; 141 char *pad9; 142 143 long pad10; 144 long pad11; 145 int pad12; 146 long pad13; 147 quad_t pad14; 148 long pad15; 149 150 struct timeval pad16; 151 /* we dont set this, because BSDI's uname used gethostname() instead */ 152 int bsdi_hostname; /* hostname on BSD/386 */ 153 154 /* the actual string data is appended here */ 155 156 } bsdi_si; 157 158 /* 159 * this data is appended to the end of the bsdi_si structure during copyout. 160 * The "char *" offsets are relative to the base of the bsdi_si struct. 161 * This contains "FreeBSD\02.0-BUILT-nnnnnn\0i386\0", and these strings 162 * should not exceed the length of the buffer here... (or else!! :-) 163 */ 164 static char bsdi_strings[80]; /* It had better be less than this! */ 165 166 int 167 ogetkerninfo(struct thread *td, struct ogetkerninfo_args *uap) 168 { 169 int error, name[6]; 170 size_t size; 171 u_int needed = 0; 172 173 switch (uap->op & 0xff00) { 174 case KINFO_RT: 175 name[0] = CTL_NET; 176 name[1] = PF_ROUTE; 177 name[2] = 0; 178 name[3] = (uap->op & 0xff0000) >> 16; 179 name[4] = uap->op & 0xff; 180 name[5] = uap->arg; 181 error = userland_sysctl(td, name, 6, uap->where, uap->size, 182 0, 0, 0, &size, 0); 183 break; 184 185 case KINFO_PROC: 186 name[0] = CTL_KERN; 187 name[1] = KERN_PROC; 188 name[2] = uap->op & 0xff; 189 name[3] = uap->arg; 190 error = userland_sysctl(td, name, 4, uap->where, uap->size, 191 0, 0, 0, &size, 0); 192 break; 193 194 case KINFO_FILE: 195 name[0] = CTL_KERN; 196 name[1] = KERN_FILE; 197 error = userland_sysctl(td, name, 2, uap->where, uap->size, 198 0, 0, 0, &size, 0); 199 break; 200 201 case KINFO_METER: 202 name[0] = CTL_VM; 203 name[1] = VM_TOTAL; 204 error = userland_sysctl(td, name, 2, uap->where, uap->size, 205 0, 0, 0, &size, 0); 206 break; 207 208 case KINFO_LOADAVG: 209 name[0] = CTL_VM; 210 name[1] = VM_LOADAVG; 211 error = userland_sysctl(td, name, 2, uap->where, uap->size, 212 0, 0, 0, &size, 0); 213 break; 214 215 case KINFO_CLOCKRATE: 216 name[0] = CTL_KERN; 217 name[1] = KERN_CLOCKRATE; 218 error = userland_sysctl(td, name, 2, uap->where, uap->size, 219 0, 0, 0, &size, 0); 220 break; 221 222 case KINFO_BSDI_SYSINFO: { 223 /* 224 * this is pretty crude, but it's just enough for uname() 225 * from BSDI's 1.x libc to work. 226 * 227 * *size gives the size of the buffer before the call, and 228 * the amount of data copied after a successful call. 229 * If successful, the return value is the amount of data 230 * available, which can be larger than *size. 231 * 232 * BSDI's 2.x product apparently fails with ENOMEM if *size 233 * is too small. 234 */ 235 236 u_int left; 237 char *s; 238 239 bzero((char *)&bsdi_si, sizeof(bsdi_si)); 240 bzero(bsdi_strings, sizeof(bsdi_strings)); 241 242 s = bsdi_strings; 243 244 bsdi_si.bsdi_ostype = (s - bsdi_strings) + sizeof(bsdi_si); 245 strcpy(s, ostype); 246 s += strlen(s) + 1; 247 248 bsdi_si.bsdi_osrelease = (s - bsdi_strings) + sizeof(bsdi_si); 249 strcpy(s, osrelease); 250 s += strlen(s) + 1; 251 252 bsdi_si.bsdi_machine = (s - bsdi_strings) + sizeof(bsdi_si); 253 strcpy(s, machine); 254 s += strlen(s) + 1; 255 256 needed = sizeof(bsdi_si) + (s - bsdi_strings); 257 258 if ((uap->where == NULL) || (uap->size == NULL)) { 259 /* process is asking how much buffer to supply.. */ 260 size = needed; 261 error = 0; 262 break; 263 } 264 265 if ((error = copyin(uap->size, &size, sizeof(size))) != 0) 266 break; 267 268 /* if too much buffer supplied, trim it down */ 269 if (size > needed) 270 size = needed; 271 272 /* how much of the buffer is remaining */ 273 left = size; 274 275 if ((error = copyout((char *)&bsdi_si, uap->where, left)) != 0) 276 break; 277 278 /* is there any point in continuing? */ 279 if (left > sizeof(bsdi_si)) { 280 left -= sizeof(bsdi_si); 281 error = copyout(&bsdi_strings, 282 uap->where + sizeof(bsdi_si), left); 283 } 284 break; 285 } 286 287 default: 288 error = EOPNOTSUPP; 289 break; 290 } 291 if (error == 0) { 292 td->td_retval[0] = needed ? needed : size; 293 if (uap->size) { 294 error = copyout(&size, uap->size, sizeof(size)); 295 } 296 } 297 return (error); 298 } 299 #endif /* COMPAT_43 */ 300 301 #ifdef COMPAT_FREEBSD4 302 /* 303 * This is the FreeBSD-1.1 compatible uname(2) interface. These days it is 304 * done in libc as a wrapper around a bunch of sysctl's. This must maintain 305 * the old 1.1 binary ABI. 306 */ 307 #if SYS_NMLN != 32 308 #error "FreeBSD-1.1 uname syscall has been broken" 309 #endif 310 #ifndef _SYS_SYSPROTO_H_ 311 struct uname_args { 312 struct utsname *name; 313 }; 314 #endif 315 /* ARGSUSED */ 316 int 317 freebsd4_uname(struct thread *td, struct freebsd4_uname_args *uap) 318 { 319 int name[2], error; 320 size_t len; 321 char *s, *us; 322 323 name[0] = CTL_KERN; 324 name[1] = KERN_OSTYPE; 325 len = sizeof (uap->name->sysname); 326 error = userland_sysctl(td, name, 2, uap->name->sysname, &len, 327 1, 0, 0, 0, 0); 328 if (error) 329 return (error); 330 subyte( uap->name->sysname + sizeof(uap->name->sysname) - 1, 0); 331 332 name[1] = KERN_HOSTNAME; 333 len = sizeof uap->name->nodename; 334 error = userland_sysctl(td, name, 2, uap->name->nodename, &len, 335 1, 0, 0, 0, 0); 336 if (error) 337 return (error); 338 subyte( uap->name->nodename + sizeof(uap->name->nodename) - 1, 0); 339 340 name[1] = KERN_OSRELEASE; 341 len = sizeof uap->name->release; 342 error = userland_sysctl(td, name, 2, uap->name->release, &len, 343 1, 0, 0, 0, 0); 344 if (error) 345 return (error); 346 subyte( uap->name->release + sizeof(uap->name->release) - 1, 0); 347 348 /* 349 name = KERN_VERSION; 350 len = sizeof uap->name->version; 351 error = userland_sysctl(td, name, 2, uap->name->version, &len, 352 1, 0, 0, 0, 0); 353 if (error) 354 return (error); 355 subyte( uap->name->version + sizeof(uap->name->version) - 1, 0); 356 */ 357 358 /* 359 * this stupid hackery to make the version field look like FreeBSD 1.1 360 */ 361 for(s = version; *s && *s != '#'; s++); 362 363 for(us = uap->name->version; *s && *s != ':'; s++) { 364 error = subyte( us++, *s); 365 if (error) 366 return (error); 367 } 368 error = subyte( us++, 0); 369 if (error) 370 return (error); 371 372 name[0] = CTL_HW; 373 name[1] = HW_MACHINE; 374 len = sizeof uap->name->machine; 375 error = userland_sysctl(td, name, 2, uap->name->machine, &len, 376 1, 0, 0, 0, 0); 377 if (error) 378 return (error); 379 subyte( uap->name->machine + sizeof(uap->name->machine) - 1, 0); 380 return (0); 381 } 382 383 #ifndef _SYS_SYSPROTO_H_ 384 struct getdomainname_args { 385 char *domainname; 386 int len; 387 }; 388 #endif 389 /* ARGSUSED */ 390 int 391 freebsd4_getdomainname(struct thread *td, 392 struct freebsd4_getdomainname_args *uap) 393 { 394 int name[2]; 395 size_t len = uap->len; 396 397 name[0] = CTL_KERN; 398 name[1] = KERN_NISDOMAINNAME; 399 return (userland_sysctl(td, name, 2, uap->domainname, &len, 400 1, 0, 0, 0, 0)); 401 } 402 403 #ifndef _SYS_SYSPROTO_H_ 404 struct setdomainname_args { 405 char *domainname; 406 int len; 407 }; 408 #endif 409 /* ARGSUSED */ 410 int 411 freebsd4_setdomainname(struct thread *td, 412 struct freebsd4_setdomainname_args *uap) 413 { 414 int name[2]; 415 416 name[0] = CTL_KERN; 417 name[1] = KERN_NISDOMAINNAME; 418 return (userland_sysctl(td, name, 2, 0, 0, 0, uap->domainname, 419 uap->len, 0, 0)); 420 } 421 #endif /* COMPAT_FREEBSD4 */ 422