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/param.h> 33 #include <sys/systm.h> 34 #include <sys/sysproto.h> 35 #include <sys/kernel.h> 36 #include <sys/priv.h> 37 #include <sys/proc.h> 38 #include <sys/lock.h> 39 #include <sys/mutex.h> 40 #include <sys/socket.h> 41 #include <sys/sysctl.h> 42 #include <sys/utsname.h> 43 44 #include <vm/vm_param.h> 45 46 #if defined(COMPAT_43) 47 48 int 49 ogethostname(struct thread *td, struct ogethostname_args *uap) 50 { 51 int name[2]; 52 size_t len = uap->len; 53 54 name[0] = CTL_KERN; 55 name[1] = KERN_HOSTNAME; 56 return (userland_sysctl(td, name, 2, uap->hostname, &len, 57 1, 0, 0, 0, 0)); 58 } 59 60 int 61 osethostname(struct thread *td, struct osethostname_args *uap) 62 { 63 int name[2]; 64 65 name[0] = CTL_KERN; 66 name[1] = KERN_HOSTNAME; 67 return (userland_sysctl(td, name, 2, 0, 0, 0, uap->hostname, 68 uap->len, 0, 0)); 69 } 70 71 #ifndef _SYS_SYSPROTO_H_ 72 struct ogethostid_args { 73 int dummy; 74 }; 75 #endif 76 /* ARGSUSED */ 77 int 78 ogethostid(struct thread *td, struct ogethostid_args *uap) 79 { 80 size_t len = sizeof(long); 81 int name[2]; 82 83 name[0] = CTL_KERN; 84 name[1] = KERN_HOSTID; 85 return (kernel_sysctl(td, name, 2, (long *)td->td_retval, &len, 86 NULL, 0, NULL, 0)); 87 } 88 89 int 90 osethostid(struct thread *td, struct osethostid_args *uap) 91 { 92 int name[2]; 93 94 name[0] = CTL_KERN; 95 name[1] = KERN_HOSTID; 96 return (kernel_sysctl(td, name, 2, NULL, NULL, &uap->hostid, 97 sizeof(uap->hostid), NULL, 0)); 98 } 99 100 int 101 oquota(struct thread *td, struct oquota_args *uap) 102 { 103 104 return (ENOSYS); 105 } 106 107 #define KINFO_PROC (0<<8) 108 #define KINFO_RT (1<<8) 109 /* UNUSED, was KINFO_VNODE (2<<8) */ 110 #define KINFO_FILE (3<<8) 111 #define KINFO_METER (4<<8) 112 #define KINFO_LOADAVG (5<<8) 113 #define KINFO_CLOCKRATE (6<<8) 114 115 /* Non-standard BSDI extension - only present on their 4.3 net-2 releases */ 116 #define KINFO_BSDI_SYSINFO (101<<8) 117 118 /* 119 * XXX this is bloat, but I hope it's better here than on the potentially 120 * limited kernel stack... -Peter 121 */ 122 123 static struct { 124 int bsdi_machine; /* "i386" on BSD/386 */ 125 /* ^^^ this is an offset to the string, relative to the struct start */ 126 char *pad0; 127 long pad1; 128 long pad2; 129 long pad3; 130 u_long pad4; 131 u_long pad5; 132 u_long pad6; 133 134 int bsdi_ostype; /* "BSD/386" on BSD/386 */ 135 int bsdi_osrelease; /* "1.1" on BSD/386 */ 136 long pad7; 137 long pad8; 138 char *pad9; 139 140 long pad10; 141 long pad11; 142 int pad12; 143 long pad13; 144 quad_t pad14; 145 long pad15; 146 147 struct timeval pad16; 148 /* we dont set this, because BSDI's uname used gethostname() instead */ 149 int bsdi_hostname; /* hostname on BSD/386 */ 150 151 /* the actual string data is appended here */ 152 153 } bsdi_si; 154 155 /* 156 * this data is appended to the end of the bsdi_si structure during copyout. 157 * The "char *" offsets are relative to the base of the bsdi_si struct. 158 * This contains "FreeBSD\02.0-BUILT-nnnnnn\0i386\0", and these strings 159 * should not exceed the length of the buffer here... (or else!! :-) 160 */ 161 static char bsdi_strings[80]; /* It had better be less than this! */ 162 163 int 164 ogetkerninfo(struct thread *td, struct ogetkerninfo_args *uap) 165 { 166 int error, name[6]; 167 size_t size; 168 u_int needed = 0; 169 170 switch (uap->op & 0xff00) { 171 case KINFO_RT: 172 name[0] = CTL_NET; 173 name[1] = PF_ROUTE; 174 name[2] = 0; 175 name[3] = (uap->op & 0xff0000) >> 16; 176 name[4] = uap->op & 0xff; 177 name[5] = uap->arg; 178 error = userland_sysctl(td, name, 6, uap->where, uap->size, 179 0, 0, 0, &size, 0); 180 break; 181 182 case KINFO_PROC: 183 name[0] = CTL_KERN; 184 name[1] = KERN_PROC; 185 name[2] = uap->op & 0xff; 186 name[3] = uap->arg; 187 error = userland_sysctl(td, name, 4, uap->where, uap->size, 188 0, 0, 0, &size, 0); 189 break; 190 191 case KINFO_FILE: 192 name[0] = CTL_KERN; 193 name[1] = KERN_FILE; 194 error = userland_sysctl(td, name, 2, uap->where, uap->size, 195 0, 0, 0, &size, 0); 196 break; 197 198 case KINFO_METER: 199 name[0] = CTL_VM; 200 name[1] = VM_TOTAL; 201 error = userland_sysctl(td, name, 2, uap->where, uap->size, 202 0, 0, 0, &size, 0); 203 break; 204 205 case KINFO_LOADAVG: 206 name[0] = CTL_VM; 207 name[1] = VM_LOADAVG; 208 error = userland_sysctl(td, name, 2, uap->where, uap->size, 209 0, 0, 0, &size, 0); 210 break; 211 212 case KINFO_CLOCKRATE: 213 name[0] = CTL_KERN; 214 name[1] = KERN_CLOCKRATE; 215 error = userland_sysctl(td, name, 2, uap->where, uap->size, 216 0, 0, 0, &size, 0); 217 break; 218 219 case KINFO_BSDI_SYSINFO: { 220 /* 221 * this is pretty crude, but it's just enough for uname() 222 * from BSDI's 1.x libc to work. 223 * 224 * *size gives the size of the buffer before the call, and 225 * the amount of data copied after a successful call. 226 * If successful, the return value is the amount of data 227 * available, which can be larger than *size. 228 * 229 * BSDI's 2.x product apparently fails with ENOMEM if *size 230 * is too small. 231 */ 232 233 u_int left; 234 char *s; 235 236 bzero((char *)&bsdi_si, sizeof(bsdi_si)); 237 bzero(bsdi_strings, sizeof(bsdi_strings)); 238 239 s = bsdi_strings; 240 241 bsdi_si.bsdi_ostype = (s - bsdi_strings) + sizeof(bsdi_si); 242 strcpy(s, ostype); 243 s += strlen(s) + 1; 244 245 bsdi_si.bsdi_osrelease = (s - bsdi_strings) + sizeof(bsdi_si); 246 strcpy(s, osrelease); 247 s += strlen(s) + 1; 248 249 bsdi_si.bsdi_machine = (s - bsdi_strings) + sizeof(bsdi_si); 250 strcpy(s, machine); 251 s += strlen(s) + 1; 252 253 needed = sizeof(bsdi_si) + (s - bsdi_strings); 254 255 if ((uap->where == NULL) || (uap->size == NULL)) { 256 /* process is asking how much buffer to supply.. */ 257 size = needed; 258 error = 0; 259 break; 260 } 261 262 if ((error = copyin(uap->size, &size, sizeof(size))) != 0) 263 break; 264 265 /* if too much buffer supplied, trim it down */ 266 if (size > needed) 267 size = needed; 268 269 /* how much of the buffer is remaining */ 270 left = size; 271 272 if ((error = copyout((char *)&bsdi_si, uap->where, left)) != 0) 273 break; 274 275 /* is there any point in continuing? */ 276 if (left > sizeof(bsdi_si)) { 277 left -= sizeof(bsdi_si); 278 error = copyout(&bsdi_strings, 279 uap->where + sizeof(bsdi_si), left); 280 } 281 break; 282 } 283 284 default: 285 error = EOPNOTSUPP; 286 break; 287 } 288 if (error == 0) { 289 td->td_retval[0] = needed ? needed : size; 290 if (uap->size) { 291 error = copyout(&size, uap->size, sizeof(size)); 292 } 293 } 294 return (error); 295 } 296 #endif /* COMPAT_43 */ 297 298 #ifdef COMPAT_FREEBSD4 299 /* 300 * This is the FreeBSD-1.1 compatible uname(2) interface. These days it is 301 * done in libc as a wrapper around a bunch of sysctl's. This must maintain 302 * the old 1.1 binary ABI. 303 */ 304 #if SYS_NMLN != 32 305 #error "FreeBSD-1.1 uname syscall has been broken" 306 #endif 307 #ifndef _SYS_SYSPROTO_H_ 308 struct uname_args { 309 struct utsname *name; 310 }; 311 #endif 312 /* ARGSUSED */ 313 int 314 freebsd4_uname(struct thread *td, struct freebsd4_uname_args *uap) 315 { 316 int name[2], error; 317 size_t len; 318 char *s, *us; 319 320 name[0] = CTL_KERN; 321 name[1] = KERN_OSTYPE; 322 len = sizeof (uap->name->sysname); 323 error = userland_sysctl(td, name, 2, uap->name->sysname, &len, 324 1, 0, 0, 0, 0); 325 if (error) 326 return (error); 327 error = subyte(uap->name->sysname + sizeof(uap->name->sysname) - 1, 0); 328 if (error) 329 return (EFAULT); 330 331 name[1] = KERN_HOSTNAME; 332 len = sizeof uap->name->nodename; 333 error = userland_sysctl(td, name, 2, uap->name->nodename, &len, 334 1, 0, 0, 0, 0); 335 if (error) 336 return (error); 337 error = subyte(uap->name->nodename + sizeof(uap->name->nodename) - 1, 0); 338 if (error) 339 return (EFAULT); 340 341 name[1] = KERN_OSRELEASE; 342 len = sizeof uap->name->release; 343 error = userland_sysctl(td, name, 2, uap->name->release, &len, 344 1, 0, 0, 0, 0); 345 if (error) 346 return (error); 347 error = subyte(uap->name->release + sizeof(uap->name->release) - 1, 0); 348 if (error) 349 return (EFAULT); 350 351 /* 352 name = KERN_VERSION; 353 len = sizeof uap->name->version; 354 error = userland_sysctl(td, name, 2, uap->name->version, &len, 355 1, 0, 0, 0, 0); 356 if (error) 357 return (error); 358 subyte( uap->name->version + sizeof(uap->name->version) - 1, 0); 359 */ 360 361 /* 362 * this stupid hackery to make the version field look like FreeBSD 1.1 363 */ 364 for(s = version; *s && *s != '#'; s++); 365 366 for(us = uap->name->version; *s && *s != ':'; s++) { 367 if (subyte(us++, *s) != 0) 368 return (EFAULT); 369 } 370 if (subyte(us++, 0) != 0) 371 return (EFAULT); 372 373 name[0] = CTL_HW; 374 name[1] = HW_MACHINE; 375 len = sizeof uap->name->machine; 376 error = userland_sysctl(td, name, 2, uap->name->machine, &len, 377 1, 0, 0, 0, 0); 378 if (error) 379 return (error); 380 error = subyte(uap->name->machine + sizeof(uap->name->machine) - 1, 0); 381 if (error) 382 return (EFAULT); 383 return (0); 384 } 385 386 #ifndef _SYS_SYSPROTO_H_ 387 struct getdomainname_args { 388 char *domainname; 389 int len; 390 }; 391 #endif 392 /* ARGSUSED */ 393 int 394 freebsd4_getdomainname(struct thread *td, 395 struct freebsd4_getdomainname_args *uap) 396 { 397 int name[2]; 398 size_t len = uap->len; 399 400 name[0] = CTL_KERN; 401 name[1] = KERN_NISDOMAINNAME; 402 return (userland_sysctl(td, name, 2, uap->domainname, &len, 403 1, 0, 0, 0, 0)); 404 } 405 406 #ifndef _SYS_SYSPROTO_H_ 407 struct setdomainname_args { 408 char *domainname; 409 int len; 410 }; 411 #endif 412 /* ARGSUSED */ 413 int 414 freebsd4_setdomainname(struct thread *td, 415 struct freebsd4_setdomainname_args *uap) 416 { 417 int name[2]; 418 419 name[0] = CTL_KERN; 420 name[1] = KERN_NISDOMAINNAME; 421 return (userland_sysctl(td, name, 2, 0, 0, 0, uap->domainname, 422 uap->len, 0, 0)); 423 } 424 #endif /* COMPAT_FREEBSD4 */ 425