FreeBSD/Linux Kernel Cross Reference
sys/kern/kern_xxx.c
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: releng/6.2/sys/kern/kern_xxx.c 164286 2006-11-14 20:42:41Z cvs2svn $");
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/proc.h>
42 #include <sys/lock.h>
43 #include <sys/mutex.h>
44 #include <sys/sysctl.h>
45 #include <sys/utsname.h>
46
47
48 #if defined(COMPAT_43)
49
50 #ifndef _SYS_SYSPROTO_H_
51 struct gethostname_args {
52 char *hostname;
53 u_int len;
54 };
55 #endif
56 /*
57 * MPSAFE
58 */
59 /* ARGSUSED */
60 int
61 ogethostname(td, uap)
62 struct thread *td;
63 struct gethostname_args *uap;
64 {
65 int name[2];
66 int error;
67 size_t len = uap->len;
68
69 name[0] = CTL_KERN;
70 name[1] = KERN_HOSTNAME;
71 mtx_lock(&Giant);
72 error = userland_sysctl(td, name, 2, uap->hostname, &len,
73 1, 0, 0, 0, 0);
74 mtx_unlock(&Giant);
75 return(error);
76 }
77
78 #ifndef _SYS_SYSPROTO_H_
79 struct sethostname_args {
80 char *hostname;
81 u_int len;
82 };
83 #endif
84 /*
85 * MPSAFE
86 */
87 /* ARGSUSED */
88 int
89 osethostname(td, uap)
90 struct thread *td;
91 register struct sethostname_args *uap;
92 {
93 int name[2];
94 int error;
95
96 name[0] = CTL_KERN;
97 name[1] = KERN_HOSTNAME;
98 mtx_lock(&Giant);
99 error = userland_sysctl(td, name, 2, 0, 0, 0, uap->hostname,
100 uap->len, 0, 0);
101 mtx_unlock(&Giant);
102 return (error);
103 }
104
105 #ifndef _SYS_SYSPROTO_H_
106 struct ogethostid_args {
107 int dummy;
108 };
109 #endif
110 /*
111 * MPSAFE
112 */
113 /* ARGSUSED */
114 int
115 ogethostid(td, uap)
116 struct thread *td;
117 struct ogethostid_args *uap;
118 {
119
120 *(long *)(td->td_retval) = hostid;
121 return (0);
122 }
123 #endif /* COMPAT_43 */
124
125 #ifdef COMPAT_43
126 #ifndef _SYS_SYSPROTO_H_
127 struct osethostid_args {
128 long hostid;
129 };
130 #endif
131 /*
132 * MPSAFE
133 */
134 /* ARGSUSED */
135 int
136 osethostid(td, uap)
137 struct thread *td;
138 struct osethostid_args *uap;
139 {
140 int error;
141
142 if ((error = suser(td)))
143 return (error);
144 mtx_lock(&Giant);
145 hostid = uap->hostid;
146 mtx_unlock(&Giant);
147 return (0);
148 }
149
150 /*
151 * MPSAFE
152 */
153 int
154 oquota(td, uap)
155 struct thread *td;
156 struct oquota_args *uap;
157 {
158 return (ENOSYS);
159 }
160 #endif /* COMPAT_43 */
161
162 /*
163 * This is the FreeBSD-1.1 compatable uname(2) interface. These
164 * days it is done in libc as a wrapper around a bunch of sysctl's.
165 * This must maintain the old 1.1 binary ABI.
166 */
167 #if SYS_NMLN != 32
168 #error "FreeBSD-1.1 uname syscall has been broken"
169 #endif
170 #ifndef _SYS_SYSPROTO_H_
171 struct uname_args {
172 struct utsname *name;
173 };
174 #endif
175
176 /*
177 * MPSAFE
178 */
179 /* ARGSUSED */
180 int
181 uname(td, uap)
182 struct thread *td;
183 struct uname_args *uap;
184 {
185 int name[2], error;
186 size_t len;
187 char *s, *us;
188
189 name[0] = CTL_KERN;
190 name[1] = KERN_OSTYPE;
191 len = sizeof (uap->name->sysname);
192 mtx_lock(&Giant);
193 error = userland_sysctl(td, name, 2, uap->name->sysname, &len,
194 1, 0, 0, 0, 0);
195 if (error)
196 goto done2;
197 subyte( uap->name->sysname + sizeof(uap->name->sysname) - 1, 0);
198
199 name[1] = KERN_HOSTNAME;
200 len = sizeof uap->name->nodename;
201 error = userland_sysctl(td, name, 2, uap->name->nodename, &len,
202 1, 0, 0, 0, 0);
203 if (error)
204 goto done2;
205 subyte( uap->name->nodename + sizeof(uap->name->nodename) - 1, 0);
206
207 name[1] = KERN_OSRELEASE;
208 len = sizeof uap->name->release;
209 error = userland_sysctl(td, name, 2, uap->name->release, &len,
210 1, 0, 0, 0, 0);
211 if (error)
212 goto done2;
213 subyte( uap->name->release + sizeof(uap->name->release) - 1, 0);
214
215 /*
216 name = KERN_VERSION;
217 len = sizeof uap->name->version;
218 error = userland_sysctl(td, name, 2, uap->name->version, &len,
219 1, 0, 0, 0, 0);
220 if (error)
221 goto done2;
222 subyte( uap->name->version + sizeof(uap->name->version) - 1, 0);
223 */
224
225 /*
226 * this stupid hackery to make the version field look like FreeBSD 1.1
227 */
228 for(s = version; *s && *s != '#'; s++);
229
230 for(us = uap->name->version; *s && *s != ':'; s++) {
231 error = subyte( us++, *s);
232 if (error)
233 goto done2;
234 }
235 error = subyte( us++, 0);
236 if (error)
237 goto done2;
238
239 name[0] = CTL_HW;
240 name[1] = HW_MACHINE;
241 len = sizeof uap->name->machine;
242 error = userland_sysctl(td, name, 2, uap->name->machine, &len,
243 1, 0, 0, 0, 0);
244 if (error)
245 goto done2;
246 subyte( uap->name->machine + sizeof(uap->name->machine) - 1, 0);
247 done2:
248 mtx_unlock(&Giant);
249 return (error);
250 }
251
252 #ifndef _SYS_SYSPROTO_H_
253 struct getdomainname_args {
254 char *domainname;
255 int len;
256 };
257 #endif
258
259 /*
260 * MPSAFE
261 */
262 /* ARGSUSED */
263 int
264 getdomainname(td, uap)
265 struct thread *td;
266 struct getdomainname_args *uap;
267 {
268 int domainnamelen;
269 int error;
270
271 mtx_lock(&Giant);
272 domainnamelen = strlen(domainname) + 1;
273 if ((u_int)uap->len > domainnamelen)
274 uap->len = domainnamelen;
275 error = copyout(domainname, uap->domainname, uap->len);
276 mtx_unlock(&Giant);
277 return (error);
278 }
279
280 #ifndef _SYS_SYSPROTO_H_
281 struct setdomainname_args {
282 char *domainname;
283 int len;
284 };
285 #endif
286
287 /*
288 * MPSAFE
289 */
290 /* ARGSUSED */
291 int
292 setdomainname(td, uap)
293 struct thread *td;
294 struct setdomainname_args *uap;
295 {
296 int error, domainnamelen;
297
298 mtx_lock(&Giant);
299 if ((error = suser(td)))
300 goto done2;
301 if ((u_int)uap->len > sizeof (domainname) - 1) {
302 error = EINVAL;
303 goto done2;
304 }
305 domainnamelen = uap->len;
306 error = copyin(uap->domainname, domainname, uap->len);
307 domainname[domainnamelen] = 0;
308 done2:
309 mtx_unlock(&Giant);
310 return (error);
311 }
312
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