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/5.3/sys/kern/kern_xxx.c 136588 2004-10-16 08:43:07Z 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, 1, 0, 0, 0);
73 mtx_unlock(&Giant);
74 return(error);
75 }
76
77 #ifndef _SYS_SYSPROTO_H_
78 struct sethostname_args {
79 char *hostname;
80 u_int len;
81 };
82 #endif
83 /*
84 * MPSAFE
85 */
86 /* ARGSUSED */
87 int
88 osethostname(td, uap)
89 struct thread *td;
90 register struct sethostname_args *uap;
91 {
92 int name[2];
93 int error;
94
95 name[0] = CTL_KERN;
96 name[1] = KERN_HOSTNAME;
97 mtx_lock(&Giant);
98 if ((error = suser_cred(td->td_ucred, SUSER_ALLOWJAIL)) == 0) {
99 error = userland_sysctl(td, name, 2, 0, 0, 0,
100 uap->hostname, uap->len, 0);
101 }
102 mtx_unlock(&Giant);
103 return (error);
104 }
105
106 #ifndef _SYS_SYSPROTO_H_
107 struct ogethostid_args {
108 int dummy;
109 };
110 #endif
111 /*
112 * MPSAFE
113 */
114 /* ARGSUSED */
115 int
116 ogethostid(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_
128 struct osethostid_args {
129 long hostid;
130 };
131 #endif
132 /*
133 * MPSAFE
134 */
135 /* ARGSUSED */
136 int
137 osethostid(td, uap)
138 struct thread *td;
139 struct osethostid_args *uap;
140 {
141 int error;
142
143 if ((error = suser(td)))
144 return (error);
145 mtx_lock(&Giant);
146 hostid = uap->hostid;
147 mtx_unlock(&Giant);
148 return (0);
149 }
150
151 /*
152 * MPSAFE
153 */
154 int
155 oquota(td, uap)
156 struct thread *td;
157 struct oquota_args *uap;
158 {
159 return (ENOSYS);
160 }
161 #endif /* COMPAT_43 */
162
163 /*
164 * This is the FreeBSD-1.1 compatable uname(2) interface. These
165 * days it is done in libc as a wrapper around a bunch of sysctl's.
166 * This must maintain the old 1.1 binary ABI.
167 */
168 #if SYS_NMLN != 32
169 #error "FreeBSD-1.1 uname syscall has been broken"
170 #endif
171 #ifndef _SYS_SYSPROTO_H_
172 struct uname_args {
173 struct utsname *name;
174 };
175 #endif
176
177 /*
178 * MPSAFE
179 */
180 /* ARGSUSED */
181 int
182 uname(td, uap)
183 struct thread *td;
184 struct uname_args *uap;
185 {
186 int name[2], error;
187 size_t len;
188 char *s, *us;
189
190 name[0] = CTL_KERN;
191 name[1] = KERN_OSTYPE;
192 len = sizeof (uap->name->sysname);
193 mtx_lock(&Giant);
194 error = userland_sysctl(td, name, 2, uap->name->sysname, &len,
195 1, 0, 0, 0);
196 if (error)
197 goto done2;
198 subyte( uap->name->sysname + sizeof(uap->name->sysname) - 1, 0);
199
200 name[1] = KERN_HOSTNAME;
201 len = sizeof uap->name->nodename;
202 error = userland_sysctl(td, name, 2, uap->name->nodename, &len,
203 1, 0, 0, 0);
204 if (error)
205 goto done2;
206 subyte( uap->name->nodename + sizeof(uap->name->nodename) - 1, 0);
207
208 name[1] = KERN_OSRELEASE;
209 len = sizeof uap->name->release;
210 error = userland_sysctl(td, name, 2, uap->name->release, &len,
211 1, 0, 0, 0);
212 if (error)
213 goto done2;
214 subyte( uap->name->release + sizeof(uap->name->release) - 1, 0);
215
216 /*
217 name = KERN_VERSION;
218 len = sizeof uap->name->version;
219 error = userland_sysctl(td, name, 2, uap->name->version, &len,
220 1, 0, 0, 0);
221 if (error)
222 goto done2;
223 subyte( uap->name->version + sizeof(uap->name->version) - 1, 0);
224 */
225
226 /*
227 * this stupid hackery to make the version field look like FreeBSD 1.1
228 */
229 for(s = version; *s && *s != '#'; s++);
230
231 for(us = uap->name->version; *s && *s != ':'; s++) {
232 error = subyte( us++, *s);
233 if (error)
234 goto done2;
235 }
236 error = subyte( us++, 0);
237 if (error)
238 goto done2;
239
240 name[0] = CTL_HW;
241 name[1] = HW_MACHINE;
242 len = sizeof uap->name->machine;
243 error = userland_sysctl(td, name, 2, uap->name->machine, &len,
244 1, 0, 0, 0);
245 if (error)
246 goto done2;
247 subyte( uap->name->machine + sizeof(uap->name->machine) - 1, 0);
248 done2:
249 mtx_unlock(&Giant);
250 return (error);
251 }
252
253 #ifndef _SYS_SYSPROTO_H_
254 struct getdomainname_args {
255 char *domainname;
256 int len;
257 };
258 #endif
259
260 /*
261 * MPSAFE
262 */
263 /* ARGSUSED */
264 int
265 getdomainname(td, uap)
266 struct thread *td;
267 struct getdomainname_args *uap;
268 {
269 int domainnamelen;
270 int error;
271
272 mtx_lock(&Giant);
273 domainnamelen = strlen(domainname) + 1;
274 if ((u_int)uap->len > domainnamelen)
275 uap->len = domainnamelen;
276 error = copyout(domainname, uap->domainname, uap->len);
277 mtx_unlock(&Giant);
278 return (error);
279 }
280
281 #ifndef _SYS_SYSPROTO_H_
282 struct setdomainname_args {
283 char *domainname;
284 int len;
285 };
286 #endif
287
288 /*
289 * MPSAFE
290 */
291 /* ARGSUSED */
292 int
293 setdomainname(td, uap)
294 struct thread *td;
295 struct setdomainname_args *uap;
296 {
297 int error, domainnamelen;
298
299 mtx_lock(&Giant);
300 if ((error = suser(td)))
301 goto done2;
302 if ((u_int)uap->len > sizeof (domainname) - 1) {
303 error = EINVAL;
304 goto done2;
305 }
306 domainnamelen = uap->len;
307 error = copyin(uap->domainname, domainname, uap->len);
308 domainname[domainnamelen] = 0;
309 done2:
310 mtx_unlock(&Giant);
311 return (error);
312 }
313
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