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 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)kern_xxx.c 8.2 (Berkeley) 11/14/93 34 */ 35 36 #include <sys/cdefs.h> 37 __FBSDID("$FreeBSD$"); 38 39 #include "opt_compat.h" 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/sysproto.h> 44 #include <sys/kernel.h> 45 #include <sys/proc.h> 46 #include <sys/lock.h> 47 #include <sys/mutex.h> 48 #include <sys/sysctl.h> 49 #include <sys/utsname.h> 50 51 52 #if defined(COMPAT_43) || defined(COMPAT_SUNOS) 53 54 #ifndef _SYS_SYSPROTO_H_ 55 struct gethostname_args { 56 char *hostname; 57 u_int len; 58 }; 59 #endif 60 /* 61 * MPSAFE 62 */ 63 /* ARGSUSED */ 64 int 65 ogethostname(td, uap) 66 struct thread *td; 67 struct gethostname_args *uap; 68 { 69 int name[2]; 70 int error; 71 size_t len = uap->len; 72 73 name[0] = CTL_KERN; 74 name[1] = KERN_HOSTNAME; 75 mtx_lock(&Giant); 76 error = userland_sysctl(td, name, 2, uap->hostname, &len, 1, 0, 0, 0); 77 mtx_unlock(&Giant); 78 return(error); 79 } 80 81 #ifndef _SYS_SYSPROTO_H_ 82 struct sethostname_args { 83 char *hostname; 84 u_int len; 85 }; 86 #endif 87 /* 88 * MPSAFE 89 */ 90 /* ARGSUSED */ 91 int 92 osethostname(td, uap) 93 struct thread *td; 94 register struct sethostname_args *uap; 95 { 96 int name[2]; 97 int error; 98 99 name[0] = CTL_KERN; 100 name[1] = KERN_HOSTNAME; 101 mtx_lock(&Giant); 102 if ((error = suser_cred(td->td_ucred, PRISON_ROOT)) == 0) { 103 error = userland_sysctl(td, name, 2, 0, 0, 0, 104 uap->hostname, uap->len, 0); 105 } 106 mtx_unlock(&Giant); 107 return (error); 108 } 109 110 #ifndef _SYS_SYSPROTO_H_ 111 struct ogethostid_args { 112 int dummy; 113 }; 114 #endif 115 /* 116 * MPSAFE 117 */ 118 /* ARGSUSED */ 119 int 120 ogethostid(td, uap) 121 struct thread *td; 122 struct ogethostid_args *uap; 123 { 124 125 *(long *)(td->td_retval) = hostid; 126 return (0); 127 } 128 #endif /* COMPAT_43 || COMPAT_SUNOS */ 129 130 #ifdef COMPAT_43 131 #ifndef _SYS_SYSPROTO_H_ 132 struct osethostid_args { 133 long hostid; 134 }; 135 #endif 136 /* 137 * MPSAFE 138 */ 139 /* ARGSUSED */ 140 int 141 osethostid(td, uap) 142 struct thread *td; 143 struct osethostid_args *uap; 144 { 145 int error; 146 147 mtx_lock(&Giant); 148 if ((error = suser(td))) 149 hostid = uap->hostid; 150 mtx_unlock(&Giant); 151 return (error); 152 } 153 154 /* 155 * MPSAFE 156 */ 157 int 158 oquota(td, uap) 159 struct thread *td; 160 struct oquota_args *uap; 161 { 162 return (ENOSYS); 163 } 164 #endif /* COMPAT_43 */ 165 166 /* 167 * This is the FreeBSD-1.1 compatable uname(2) interface. These 168 * days it is done in libc as a wrapper around a bunch of sysctl's. 169 * This must maintain the old 1.1 binary ABI. 170 */ 171 #if SYS_NMLN != 32 172 #error "FreeBSD-1.1 uname syscall has been broken" 173 #endif 174 #ifndef _SYS_SYSPROTO_H_ 175 struct uname_args { 176 struct utsname *name; 177 }; 178 #endif 179 180 /* 181 * MPSAFE 182 */ 183 /* ARGSUSED */ 184 int 185 uname(td, uap) 186 struct thread *td; 187 struct uname_args *uap; 188 { 189 int name[2], error; 190 size_t len; 191 char *s, *us; 192 193 name[0] = CTL_KERN; 194 name[1] = KERN_OSTYPE; 195 len = sizeof (uap->name->sysname); 196 mtx_lock(&Giant); 197 error = userland_sysctl(td, name, 2, uap->name->sysname, &len, 198 1, 0, 0, 0); 199 if (error) 200 goto done2; 201 subyte( uap->name->sysname + sizeof(uap->name->sysname) - 1, 0); 202 203 name[1] = KERN_HOSTNAME; 204 len = sizeof uap->name->nodename; 205 error = userland_sysctl(td, name, 2, uap->name->nodename, &len, 206 1, 0, 0, 0); 207 if (error) 208 goto done2; 209 subyte( uap->name->nodename + sizeof(uap->name->nodename) - 1, 0); 210 211 name[1] = KERN_OSRELEASE; 212 len = sizeof uap->name->release; 213 error = userland_sysctl(td, name, 2, uap->name->release, &len, 214 1, 0, 0, 0); 215 if (error) 216 goto done2; 217 subyte( uap->name->release + sizeof(uap->name->release) - 1, 0); 218 219 /* 220 name = KERN_VERSION; 221 len = sizeof uap->name->version; 222 error = userland_sysctl(td, name, 2, uap->name->version, &len, 223 1, 0, 0, 0); 224 if (error) 225 goto done2; 226 subyte( uap->name->version + sizeof(uap->name->version) - 1, 0); 227 */ 228 229 /* 230 * this stupid hackery to make the version field look like FreeBSD 1.1 231 */ 232 for(s = version; *s && *s != '#'; s++); 233 234 for(us = uap->name->version; *s && *s != ':'; s++) { 235 error = subyte( us++, *s); 236 if (error) 237 goto done2; 238 } 239 error = subyte( us++, 0); 240 if (error) 241 goto done2; 242 243 name[0] = CTL_HW; 244 name[1] = HW_MACHINE; 245 len = sizeof uap->name->machine; 246 error = userland_sysctl(td, name, 2, uap->name->machine, &len, 247 1, 0, 0, 0); 248 if (error) 249 goto done2; 250 subyte( uap->name->machine + sizeof(uap->name->machine) - 1, 0); 251 done2: 252 mtx_unlock(&Giant); 253 return (error); 254 } 255 256 #ifndef _SYS_SYSPROTO_H_ 257 struct getdomainname_args { 258 char *domainname; 259 int len; 260 }; 261 #endif 262 263 /* 264 * MPSAFE 265 */ 266 /* ARGSUSED */ 267 int 268 getdomainname(td, uap) 269 struct thread *td; 270 struct getdomainname_args *uap; 271 { 272 int domainnamelen; 273 int error; 274 275 mtx_lock(&Giant); 276 domainnamelen = strlen(domainname) + 1; 277 if ((u_int)uap->len > domainnamelen + 1) 278 uap->len = domainnamelen + 1; 279 error = copyout(domainname, uap->domainname, uap->len); 280 mtx_unlock(&Giant); 281 return (error); 282 } 283 284 #ifndef _SYS_SYSPROTO_H_ 285 struct setdomainname_args { 286 char *domainname; 287 int len; 288 }; 289 #endif 290 291 /* 292 * MPSAFE 293 */ 294 /* ARGSUSED */ 295 int 296 setdomainname(td, uap) 297 struct thread *td; 298 struct setdomainname_args *uap; 299 { 300 int error, domainnamelen; 301 302 mtx_lock(&Giant); 303 if ((error = suser(td))) 304 goto done2; 305 if ((u_int)uap->len > sizeof (domainname) - 1) { 306 error = EINVAL; 307 goto done2; 308 } 309 domainnamelen = uap->len; 310 error = copyin(uap->domainname, domainname, uap->len); 311 domainname[domainnamelen] = 0; 312 done2: 313 mtx_unlock(&Giant); 314 return (error); 315 } 316 317