kern_xxx.c revision 164033
1/*- 2 * Copyright (c) 1982, 1986, 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)kern_xxx.c 8.2 (Berkeley) 11/14/93 30 */ 31 32#include <sys/cdefs.h> 33__FBSDID("$FreeBSD: head/sys/kern/kern_xxx.c 164033 2006-11-06 13:42:10Z rwatson $"); 34 35#include "opt_compat.h" 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/sysctl.h> 46#include <sys/utsname.h> 47 48 49#if defined(COMPAT_43) 50 51#ifndef _SYS_SYSPROTO_H_ 52struct gethostname_args { 53 char *hostname; 54 u_int len; 55}; 56#endif 57/* 58 * MPSAFE 59 */ 60/* ARGSUSED */ 61int 62ogethostname(td, uap) 63 struct thread *td; 64 struct gethostname_args *uap; 65{ 66 int name[2]; 67 int error; 68 size_t len = uap->len; 69 70 name[0] = CTL_KERN; 71 name[1] = KERN_HOSTNAME; 72 mtx_lock(&Giant); 73 error = userland_sysctl(td, name, 2, uap->hostname, &len, 74 1, 0, 0, 0, 0); 75 mtx_unlock(&Giant); 76 return(error); 77} 78 79#ifndef _SYS_SYSPROTO_H_ 80struct sethostname_args { 81 char *hostname; 82 u_int len; 83}; 84#endif 85/* 86 * MPSAFE 87 */ 88/* ARGSUSED */ 89int 90osethostname(td, uap) 91 struct thread *td; 92 register struct sethostname_args *uap; 93{ 94 int name[2]; 95 int error; 96 97 name[0] = CTL_KERN; 98 name[1] = KERN_HOSTNAME; 99 mtx_lock(&Giant); 100 error = userland_sysctl(td, name, 2, 0, 0, 0, uap->hostname, 101 uap->len, 0, 0); 102 mtx_unlock(&Giant); 103 return (error); 104} 105 106#ifndef _SYS_SYSPROTO_H_ 107struct ogethostid_args { 108 int dummy; 109}; 110#endif 111/* 112 * MPSAFE 113 */ 114/* ARGSUSED */ 115int 116ogethostid(td, uap) 117 struct thread *td; 118 struct ogethostid_args *uap; 119{ 120 121 *(long *)(td->td_retval) = hostid; 122 return (0); 123} 124#endif /* COMPAT_43 */ 125 126#ifdef COMPAT_43 127#ifndef _SYS_SYSPROTO_H_ 128struct osethostid_args { 129 long hostid; 130}; 131#endif 132/* 133 * MPSAFE 134 */ 135/* ARGSUSED */ 136int 137osethostid(td, uap) 138 struct thread *td; 139 struct osethostid_args *uap; 140{ 141 int error; 142 143 error = priv_check(td, PRIV_SETHOSTID); 144 if (error) 145 return (error); 146 mtx_lock(&Giant); 147 hostid = uap->hostid; 148 mtx_unlock(&Giant); 149 return (0); 150} 151 152/* 153 * MPSAFE 154 */ 155int 156oquota(td, uap) 157 struct thread *td; 158 struct oquota_args *uap; 159{ 160 return (ENOSYS); 161} 162#endif /* COMPAT_43 */ 163 164/* 165 * This is the FreeBSD-1.1 compatable uname(2) interface. These 166 * days it is done in libc as a wrapper around a bunch of sysctl's. 167 * This must maintain the old 1.1 binary ABI. 168 */ 169#if SYS_NMLN != 32 170#error "FreeBSD-1.1 uname syscall has been broken" 171#endif 172#ifndef _SYS_SYSPROTO_H_ 173struct uname_args { 174 struct utsname *name; 175}; 176#endif 177 178/* 179 * MPSAFE 180 */ 181/* ARGSUSED */ 182int 183uname(td, uap) 184 struct thread *td; 185 struct uname_args *uap; 186{ 187 int name[2], error; 188 size_t len; 189 char *s, *us; 190 191 name[0] = CTL_KERN; 192 name[1] = KERN_OSTYPE; 193 len = sizeof (uap->name->sysname); 194 mtx_lock(&Giant); 195 error = userland_sysctl(td, name, 2, uap->name->sysname, &len, 196 1, 0, 0, 0, 0); 197 if (error) 198 goto done2; 199 subyte( uap->name->sysname + sizeof(uap->name->sysname) - 1, 0); 200 201 name[1] = KERN_HOSTNAME; 202 len = sizeof uap->name->nodename; 203 error = userland_sysctl(td, name, 2, uap->name->nodename, &len, 204 1, 0, 0, 0, 0); 205 if (error) 206 goto done2; 207 subyte( uap->name->nodename + sizeof(uap->name->nodename) - 1, 0); 208 209 name[1] = KERN_OSRELEASE; 210 len = sizeof uap->name->release; 211 error = userland_sysctl(td, name, 2, uap->name->release, &len, 212 1, 0, 0, 0, 0); 213 if (error) 214 goto done2; 215 subyte( uap->name->release + sizeof(uap->name->release) - 1, 0); 216 217/* 218 name = KERN_VERSION; 219 len = sizeof uap->name->version; 220 error = userland_sysctl(td, name, 2, uap->name->version, &len, 221 1, 0, 0, 0, 0); 222 if (error) 223 goto done2; 224 subyte( uap->name->version + sizeof(uap->name->version) - 1, 0); 225*/ 226 227/* 228 * this stupid hackery to make the version field look like FreeBSD 1.1 229 */ 230 for(s = version; *s && *s != '#'; s++); 231 232 for(us = uap->name->version; *s && *s != ':'; s++) { 233 error = subyte( us++, *s); 234 if (error) 235 goto done2; 236 } 237 error = subyte( us++, 0); 238 if (error) 239 goto done2; 240 241 name[0] = CTL_HW; 242 name[1] = HW_MACHINE; 243 len = sizeof uap->name->machine; 244 error = userland_sysctl(td, name, 2, uap->name->machine, &len, 245 1, 0, 0, 0, 0); 246 if (error) 247 goto done2; 248 subyte( uap->name->machine + sizeof(uap->name->machine) - 1, 0); 249done2: 250 mtx_unlock(&Giant); 251 return (error); 252} 253 254#ifndef _SYS_SYSPROTO_H_ 255struct getdomainname_args { 256 char *domainname; 257 int len; 258}; 259#endif 260 261/* 262 * MPSAFE 263 */ 264/* ARGSUSED */ 265int 266getdomainname(td, uap) 267 struct thread *td; 268 struct getdomainname_args *uap; 269{ 270 int domainnamelen; 271 int error; 272 273 mtx_lock(&Giant); 274 domainnamelen = strlen(domainname) + 1; 275 if ((u_int)uap->len > domainnamelen) 276 uap->len = domainnamelen; 277 error = copyout(domainname, uap->domainname, uap->len); 278 mtx_unlock(&Giant); 279 return (error); 280} 281 282#ifndef _SYS_SYSPROTO_H_ 283struct setdomainname_args { 284 char *domainname; 285 int len; 286}; 287#endif 288 289/* 290 * MPSAFE 291 */ 292/* ARGSUSED */ 293int 294setdomainname(td, uap) 295 struct thread *td; 296 struct setdomainname_args *uap; 297{ 298 int error, domainnamelen; 299 300 error = priv_check(td, PRIV_SETDOMAINNAME); 301 if (error) 302 return (error); 303 mtx_lock(&Giant); 304 if ((u_int)uap->len > sizeof (domainname) - 1) { 305 error = EINVAL; 306 goto done2; 307 } 308 domainnamelen = uap->len; 309 error = copyin(uap->domainname, domainname, uap->len); 310 domainname[domainnamelen] = 0; 311done2: 312 mtx_unlock(&Giant); 313 return (error); 314} 315