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
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD: src/sys/compat/linux/linux_sysctl.c,v 1.17 2006/03/19 11:10:33 ru Exp $");
31
32 #include "opt_compat.h"
33
34 #include <sys/param.h>
35 #include <sys/lock.h>
36 #include <sys/malloc.h>
37 #include <sys/mutex.h>
38 #include <sys/proc.h>
39 #include <sys/sysctl.h>
40 #include <sys/systm.h>
41 #include <sys/sbuf.h>
42
43 #ifdef COMPAT_LINUX32
44 #include <machine/../linux32/linux.h>
45 #include <machine/../linux32/linux32_proto.h>
46 #else
47 #include <machine/../linux/linux.h>
48 #include <machine/../linux/linux_proto.h>
49 #endif
50
51 #include <compat/linux/linux_util.h>
52
53 #define LINUX_CTL_KERN 1
54 #define LINUX_CTL_VM 2
55 #define LINUX_CTL_NET 3
56 #define LINUX_CTL_PROC 4
57 #define LINUX_CTL_FS 5
58 #define LINUX_CTL_DEBUG 6
59 #define LINUX_CTL_DEV 7
60 #define LINUX_CTL_BUS 8
61
62 /* CTL_KERN names */
63 #define LINUX_KERN_OSTYPE 1
64 #define LINUX_KERN_OSRELEASE 2
65 #define LINUX_KERN_OSREV 3
66 #define LINUX_KERN_VERSION 4
67
68 static int
69 handle_string(struct l___sysctl_args *la, char *value)
70 {
71 int error;
72
73 if (la->oldval != 0) {
74 l_int len = strlen(value);
75 error = copyout(value, PTRIN(la->oldval), len + 1);
76 if (!error && la->oldlenp != 0)
77 error = copyout(&len, PTRIN(la->oldlenp), sizeof(len));
78 if (error)
79 return (error);
80 }
81
82 if (la->newval != 0)
83 return (ENOTDIR);
84
85 return (0);
86 }
87
88 int
89 linux_sysctl(struct thread *td, struct linux_sysctl_args *args)
90 {
91 struct l___sysctl_args la;
92 struct sbuf *sb;
93 l_int *mib;
94 int error, i;
95
96 error = copyin(args->args, &la, sizeof(la));
97 if (error)
98 return (error);
99
100 if (la.nlen <= 0 || la.nlen > LINUX_CTL_MAXNAME)
101 return (ENOTDIR);
102
103 mib = malloc(la.nlen * sizeof(l_int), M_TEMP, M_WAITOK);
104 error = copyin(PTRIN(la.name), mib, la.nlen * sizeof(l_int));
105 if (error) {
106 free(mib, M_TEMP);
107 return (error);
108 }
109
110 switch (mib[0]) {
111 case LINUX_CTL_KERN:
112 if (la.nlen < 2)
113 break;
114
115 switch (mib[1]) {
116 case LINUX_KERN_VERSION:
117 error = handle_string(&la, version);
118 free(mib, M_TEMP);
119 return (error);
120 default:
121 break;
122 }
123 break;
124 default:
125 break;
126 }
127
128 sb = sbuf_new(NULL, NULL, 20 + la.nlen * 5, SBUF_AUTOEXTEND);
129 if (sb == NULL) {
130 linux_msg(td, "sysctl is not implemented");
131 } else {
132 sbuf_printf(sb, "sysctl ");
133 for (i = 0; i < la.nlen; i++)
134 sbuf_printf(sb, "%c%d", (i) ? ',' : '{', mib[i]);
135 sbuf_printf(sb, "} is not implemented");
136 sbuf_finish(sb);
137 linux_msg(td, "%s", sbuf_data(sb));
138 sbuf_delete(sb);
139 }
140
141 free(mib, M_TEMP);
142 return (ENOTDIR);
143 }
144 Cache object: 8207cf52cc7475e4d45be4159512f076
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