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