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 __FBSDID("$FreeBSD$"); 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/sysproto.h> 40 #include <sys/kernel.h> 41 #include <sys/priv.h> 42 #include <sys/proc.h> 43 #include <sys/lock.h> 44 #include <sys/mutex.h> 45 #include <sys/socket.h> 46 #include <sys/sysctl.h> 47 #include <sys/utsname.h> 48 49 #include <vm/vm_param.h> 50 51 #if defined(COMPAT_43) 52 53 int 54 ogethostname(struct thread *td, struct ogethostname_args *uap) 55 { 56 int name[2]; 57 size_t len = uap->len; 58 59 name[0] = CTL_KERN; 60 name[1] = KERN_HOSTNAME; 61 return (userland_sysctl(td, name, 2, uap->hostname, &len, 62 1, 0, 0, 0, 0)); 63 } 64 65 int 66 osethostname(struct thread *td, struct osethostname_args *uap) 67 { 68 int name[2]; 69 70 name[0] = CTL_KERN; 71 name[1] = KERN_HOSTNAME; 72 return (userland_sysctl(td, name, 2, 0, 0, 0, uap->hostname, 73 uap->len, 0, 0)); 74 } 75 76 #ifndef _SYS_SYSPROTO_H_ 77 struct ogethostid_args { 78 int dummy; 79 }; 80 #endif 81 /* ARGSUSED */ 82 int 83 ogethostid(struct thread *td, struct ogethostid_args *uap) 84 { 85 size_t len = sizeof(long); 86 int name[2]; 87 88 name[0] = CTL_KERN; 89 name[1] = KERN_HOSTID; 90 return (kernel_sysctl(td, name, 2, (long *)td->td_retval, &len, 91 NULL, 0, NULL, 0)); 92 } 93 94 int 95 osethostid(struct thread *td, struct osethostid_args *uap) 96 { 97 int name[2]; 98 99 name[0] = CTL_KERN; 100 name[1] = KERN_HOSTID; 101 return (kernel_sysctl(td, name, 2, NULL, NULL, &uap->hostid, 102 sizeof(uap->hostid), NULL, 0)); 103 } 104 105 int 106 oquota(struct thread *td, struct oquota_args *uap) 107 { 108 109 return (ENOSYS); 110 } 111 112 #define KINFO_PROC (0<<8) 113 #define KINFO_RT (1<<8) 114 /* UNUSED, was KINFO_VNODE (2<<8) */ 115 #define KINFO_FILE (3<<8) 116 #define KINFO_METER (4<<8) 117 #define KINFO_LOADAVG (5<<8) 118 #define KINFO_CLOCKRATE (6<<8) 119 120 /* Non-standard BSDI extension - only present on their 4.3 net-2 releases */ 121 #define KINFO_BSDI_SYSINFO (101<<8) 122 123 /* 124 * XXX this is bloat, but I hope it's better here than on the potentially 125 * limited kernel stack... -Peter 126 */ 127 128 static struct { 129 int bsdi_machine; /* "i386" on BSD/386 */ 130 /* ^^^ this is an offset to the string, relative to the struct start */ 131 char *pad0; 132 long pad1; 133 long pad2; 134 long pad3; 135 u_long pad4; 136 u_long pad5; 137 u_long pad6; 138 139 int bsdi_ostype; /* "BSD/386" on BSD/386 */ 140 int bsdi_osrelease; /* "1.1" on BSD/386 */ 141 long pad7; 142 long pad8; 143 char *pad9; 144 145 long pad10; 146 long pad11; 147 int pad12; 148 long pad13; 149 quad_t pad14; 150 long pad15; 151 152 struct timeval pad16; 153 /* we dont set this, because BSDI's uname used gethostname() instead */ 154 int bsdi_hostname; /* hostname on BSD/386 */ 155 156 /* the actual string data is appended here */ 157 158 } bsdi_si; 159 160 /* 161 * this data is appended to the end of the bsdi_si structure during copyout. 162 * The "char *" offsets are relative to the base of the bsdi_si struct. 163 * This contains "FreeBSD\02.0-BUILT-nnnnnn\0i386\0", and these strings 164 * should not exceed the length of the buffer here... (or else!! :-) 165 */ 166 static char bsdi_strings[80]; /* It had better be less than this! */ 167 168 int 169 ogetkerninfo(struct thread *td, struct ogetkerninfo_args *uap) 170 { 171 int error, name[6]; 172 size_t size; 173 u_int needed = 0; 174 175 switch (uap->op & 0xff00) { 176 case KINFO_RT: 177 name[0] = CTL_NET; 178 name[1] = PF_ROUTE; 179 name[2] = 0; 180 name[3] = (uap->op & 0xff0000) >> 16; 181 name[4] = uap->op & 0xff; 182 name[5] = uap->arg; 183 error = userland_sysctl(td, name, 6, uap->where, uap->size, 184 0, 0, 0, &size, 0); 185 break; 186 187 case KINFO_PROC: 188 name[0] = CTL_KERN; 189 name[1] = KERN_PROC; 190 name[2] = uap->op & 0xff; 191 name[3] = uap->arg; 192 error = userland_sysctl(td, name, 4, uap->where, uap->size, 193 0, 0, 0, &size, 0); 194 break; 195 196 case KINFO_FILE: 197 name[0] = CTL_KERN; 198 name[1] = KERN_FILE; 199 error = userland_sysctl(td, name, 2, uap->where, uap->size, 200 0, 0, 0, &size, 0); 201 break; 202 203 case KINFO_METER: 204 name[0] = CTL_VM; 205 name[1] = VM_TOTAL; 206 error = userland_sysctl(td, name, 2, uap->where, uap->size, 207 0, 0, 0, &size, 0); 208 break; 209 210 case KINFO_LOADAVG: 211 name[0] = CTL_VM; 212 name[1] = VM_LOADAVG; 213 error = userland_sysctl(td, name, 2, uap->where, uap->size, 214 0, 0, 0, &size, 0); 215 break; 216 217 case KINFO_CLOCKRATE: 218 name[0] = CTL_KERN; 219 name[1] = KERN_CLOCKRATE; 220 error = userland_sysctl(td, name, 2, uap->where, uap->size, 221 0, 0, 0, &size, 0); 222 break; 223 224 case KINFO_BSDI_SYSINFO: { 225 /* 226 * this is pretty crude, but it's just enough for uname() 227 * from BSDI's 1.x libc to work. 228 * 229 * *size gives the size of the buffer before the call, and 230 * the amount of data copied after a successful call. 231 * If successful, the return value is the amount of data 232 * available, which can be larger than *size. 233 * 234 * BSDI's 2.x product apparently fails with ENOMEM if *size 235 * is too small. 236 */ 237 238 u_int left; 239 char *s; 240 241 bzero((char *)&bsdi_si, sizeof(bsdi_si)); 242 bzero(bsdi_strings, sizeof(bsdi_strings)); 243 244 s = bsdi_strings; 245 246 bsdi_si.bsdi_ostype = (s - bsdi_strings) + sizeof(bsdi_si); 247 strcpy(s, ostype); 248 s += strlen(s) + 1; 249 250 bsdi_si.bsdi_osrelease = (s - bsdi_strings) + sizeof(bsdi_si); 251 strcpy(s, osrelease); 252 s += strlen(s) + 1; 253 254 bsdi_si.bsdi_machine = (s - bsdi_strings) + sizeof(bsdi_si); 255 strcpy(s, machine); 256 s += strlen(s) + 1; 257 258 needed = sizeof(bsdi_si) + (s - bsdi_strings); 259 260 if ((uap->where == NULL) || (uap->size == NULL)) { 261 /* process is asking how much buffer to supply.. */ 262 size = needed; 263 error = 0; 264 break; 265 } 266 267 if ((error = copyin(uap->size, &size, sizeof(size))) != 0) 268 break; 269 270 /* if too much buffer supplied, trim it down */ 271 if (size > needed) 272 size = needed; 273 274 /* how much of the buffer is remaining */ 275 left = size; 276 277 if ((error = copyout((char *)&bsdi_si, uap->where, left)) != 0) 278 break; 279 280 /* is there any point in continuing? */ 281 if (left > sizeof(bsdi_si)) { 282 left -= sizeof(bsdi_si); 283 error = copyout(&bsdi_strings, 284 uap->where + sizeof(bsdi_si), left); 285 } 286 break; 287 } 288 289 default: 290 error = EOPNOTSUPP; 291 break; 292 } 293 if (error == 0) { 294 td->td_retval[0] = needed ? needed : size; 295 if (uap->size) { 296 error = copyout(&size, uap->size, sizeof(size)); 297 } 298 } 299 return (error); 300 } 301 #endif /* COMPAT_43 */ 302 303 #ifdef COMPAT_FREEBSD4 304 /* 305 * This is the FreeBSD-1.1 compatible uname(2) interface. These days it is 306 * done in libc as a wrapper around a bunch of sysctl's. This must maintain 307 * the old 1.1 binary ABI. 308 */ 309 #if SYS_NMLN != 32 310 #error "FreeBSD-1.1 uname syscall has been broken" 311 #endif 312 #ifndef _SYS_SYSPROTO_H_ 313 struct uname_args { 314 struct utsname *name; 315 }; 316 #endif 317 /* ARGSUSED */ 318 int 319 freebsd4_uname(struct thread *td, struct freebsd4_uname_args *uap) 320 { 321 int name[2], error; 322 size_t len; 323 char *s, *us; 324 325 name[0] = CTL_KERN; 326 name[1] = KERN_OSTYPE; 327 len = sizeof (uap->name->sysname); 328 error = userland_sysctl(td, name, 2, uap->name->sysname, &len, 329 1, 0, 0, 0, 0); 330 if (error) 331 return (error); 332 subyte( uap->name->sysname + sizeof(uap->name->sysname) - 1, 0); 333 334 name[1] = KERN_HOSTNAME; 335 len = sizeof uap->name->nodename; 336 error = userland_sysctl(td, name, 2, uap->name->nodename, &len, 337 1, 0, 0, 0, 0); 338 if (error) 339 return (error); 340 subyte( uap->name->nodename + sizeof(uap->name->nodename) - 1, 0); 341 342 name[1] = KERN_OSRELEASE; 343 len = sizeof uap->name->release; 344 error = userland_sysctl(td, name, 2, uap->name->release, &len, 345 1, 0, 0, 0, 0); 346 if (error) 347 return (error); 348 subyte( uap->name->release + sizeof(uap->name->release) - 1, 0); 349 350 /* 351 name = KERN_VERSION; 352 len = sizeof uap->name->version; 353 error = userland_sysctl(td, name, 2, uap->name->version, &len, 354 1, 0, 0, 0, 0); 355 if (error) 356 return (error); 357 subyte( uap->name->version + sizeof(uap->name->version) - 1, 0); 358 */ 359 360 /* 361 * this stupid hackery to make the version field look like FreeBSD 1.1 362 */ 363 for(s = version; *s && *s != '#'; s++); 364 365 for(us = uap->name->version; *s && *s != ':'; s++) { 366 error = subyte( us++, *s); 367 if (error) 368 return (error); 369 } 370 error = subyte( us++, 0); 371 if (error) 372 return (error); 373 374 name[0] = CTL_HW; 375 name[1] = HW_MACHINE; 376 len = sizeof uap->name->machine; 377 error = userland_sysctl(td, name, 2, uap->name->machine, &len, 378 1, 0, 0, 0, 0); 379 if (error) 380 return (error); 381 subyte( uap->name->machine + sizeof(uap->name->machine) - 1, 0); 382 return (0); 383 } 384 385 #ifndef _SYS_SYSPROTO_H_ 386 struct getdomainname_args { 387 char *domainname; 388 int len; 389 }; 390 #endif 391 /* ARGSUSED */ 392 int 393 freebsd4_getdomainname(struct thread *td, 394 struct freebsd4_getdomainname_args *uap) 395 { 396 int name[2]; 397 size_t len = uap->len; 398 399 name[0] = CTL_KERN; 400 name[1] = KERN_NISDOMAINNAME; 401 return (userland_sysctl(td, name, 2, uap->domainname, &len, 402 1, 0, 0, 0, 0)); 403 } 404 405 #ifndef _SYS_SYSPROTO_H_ 406 struct setdomainname_args { 407 char *domainname; 408 int len; 409 }; 410 #endif 411 /* ARGSUSED */ 412 int 413 freebsd4_setdomainname(struct thread *td, 414 struct freebsd4_setdomainname_args *uap) 415 { 416 int name[2]; 417 418 name[0] = CTL_KERN; 419 name[1] = KERN_NISDOMAINNAME; 420 return (userland_sysctl(td, name, 2, 0, 0, 0, uap->domainname, 421 uap->len, 0, 0)); 422 } 423 #endif /* COMPAT_FREEBSD4 */ 424