1 /*-
2 * Copyright (c) 2001 Marcel Moolenaar
3 * 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 * in this position and unchanged.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * $FreeBSD$
29 */
30
31 #include "opt_compat.h"
32
33 #include <sys/param.h>
34 #include <sys/systm.h>
35 #include <sys/proc.h>
36 #include <sys/sysproto.h>
37
38 #include <machine/../linux/linux.h>
39 #include <machine/../linux/linux_proto.h>
40 #include <compat/linux/linux_util.h>
41
42 #define LINUX_CTL_KERN 1
43 #define LINUX_CTL_VM 2
44 #define LINUX_CTL_NET 3
45 #define LINUX_CTL_PROC 4
46 #define LINUX_CTL_FS 5
47 #define LINUX_CTL_DEBUG 6
48 #define LINUX_CTL_DEV 7
49 #define LINUX_CTL_BUS 8
50
51 /* CTL_KERN names */
52 #define LINUX_KERN_OSTYPE 1
53 #define LINUX_KERN_OSRELEASE 2
54 #define LINUX_KERN_OSREV 3
55 #define LINUX_KERN_VERSION 4
56
57 static int
58 handle_string(struct l___sysctl_args *la, char *value)
59 {
60 int error;
61
62 if (la->oldval != NULL) {
63 l_int len = strlen(value);
64 error = copyout(value, la->oldval, len + 1);
65 if (!error && la->oldlenp != NULL)
66 error = copyout(&len, la->oldlenp, sizeof(len));
67 if (error)
68 return (error);
69 }
70
71 if (la->newval != NULL)
72 return (ENOTDIR);
73
74 return (0);
75 }
76
77 int
78 linux_sysctl(struct proc *p, struct linux_sysctl_args *args)
79 {
80 struct l___sysctl_args la;
81 l_int *mib;
82 int error, i;
83 caddr_t sg;
84
85 error = copyin((caddr_t)args->args, &la, sizeof(la));
86 if (error)
87 return (error);
88
89 if (la.nlen == 0 || la.nlen > LINUX_CTL_MAXNAME)
90 return (ENOTDIR);
91
92 sg = stackgap_init();
93 mib = stackgap_alloc(&sg, la.nlen * sizeof(l_int));
94 error = copyin(la.name, mib, la.nlen * sizeof(l_int));
95 if (error)
96 return (error);
97
98 switch (mib[0]) {
99 case LINUX_CTL_KERN:
100 if (la.nlen < 2)
101 break;
102
103 switch (mib[1]) {
104 case LINUX_KERN_VERSION:
105 return (handle_string(&la, version));
106 default:
107 break;
108 }
109 break;
110 default:
111 break;
112 }
113
114 printf("linux: sysctl: unhandled name=");
115 for (i = 0; i < la.nlen; i++)
116 printf("%c%d", (i) ? ',' : '{', mib[i]);
117 printf("}\n");
118
119 return (ENOTDIR);
120 }
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