2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 2001 Marcel Moolenaar
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer
12 * in this position and unchanged.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
34 #include "opt_compat.h"
36 #include <sys/param.h>
37 #include <sys/kernel.h>
39 #include <sys/malloc.h>
40 #include <sys/mutex.h>
43 #include <sys/sysctl.h>
44 #include <sys/systm.h>
48 #include <machine/../linux32/linux.h>
49 #include <machine/../linux32/linux32_proto.h>
51 #include <machine/../linux/linux.h>
52 #include <machine/../linux/linux_proto.h>
55 #include <compat/linux/linux_dtrace.h>
56 #include <compat/linux/linux_misc.h>
57 #include <compat/linux/linux_util.h>
59 #define LINUX_CTL_KERN 1
60 #define LINUX_CTL_VM 2
61 #define LINUX_CTL_NET 3
62 #define LINUX_CTL_PROC 4
63 #define LINUX_CTL_FS 5
64 #define LINUX_CTL_DEBUG 6
65 #define LINUX_CTL_DEV 7
66 #define LINUX_CTL_BUS 8
69 #define LINUX_KERN_OSTYPE 1
70 #define LINUX_KERN_OSRELEASE 2
71 #define LINUX_KERN_OSREV 3
72 #define LINUX_KERN_VERSION 4
75 LIN_SDT_PROVIDER_DECLARE(LINUX_DTRACE);
78 * DTrace probes in this module.
80 LIN_SDT_PROBE_DEFINE2(sysctl, handle_string, entry, "struct l___sysctl_args *",
82 LIN_SDT_PROBE_DEFINE1(sysctl, handle_string, copyout_error, "int");
83 LIN_SDT_PROBE_DEFINE1(sysctl, handle_string, return, "int");
84 LIN_SDT_PROBE_DEFINE2(sysctl, linux_sysctl, entry, "struct l___sysctl_args *",
86 LIN_SDT_PROBE_DEFINE1(sysctl, linux_sysctl, copyin_error, "int");
87 LIN_SDT_PROBE_DEFINE2(sysctl, linux_sysctl, wrong_length, "int", "int");
88 LIN_SDT_PROBE_DEFINE1(sysctl, linux_sysctl, unsupported_sysctl, "char *");
89 LIN_SDT_PROBE_DEFINE1(sysctl, linux_sysctl, return, "int");
92 handle_string(struct l___sysctl_args *la, char *value)
96 LIN_SDT_PROBE2(sysctl, handle_string, entry, la, value);
98 if (la->oldval != 0) {
99 l_int len = strlen(value);
100 error = copyout(value, PTRIN(la->oldval), len + 1);
101 if (!error && la->oldlenp != 0)
102 error = copyout(&len, PTRIN(la->oldlenp), sizeof(len));
104 LIN_SDT_PROBE1(sysctl, handle_string, copyout_error,
106 LIN_SDT_PROBE1(sysctl, handle_string, return, error);
111 if (la->newval != 0) {
112 LIN_SDT_PROBE1(sysctl, handle_string, return, ENOTDIR);
116 LIN_SDT_PROBE1(sysctl, handle_string, return, 0);
121 linux_sysctl(struct thread *td, struct linux_sysctl_args *args)
123 struct l___sysctl_args la;
129 LIN_SDT_PROBE2(sysctl, linux_sysctl, entry, td, args->args);
131 error = copyin(args->args, &la, sizeof(la));
133 LIN_SDT_PROBE1(sysctl, linux_sysctl, copyin_error, error);
134 LIN_SDT_PROBE1(sysctl, linux_sysctl, return, error);
138 if (la.nlen <= 0 || la.nlen > LINUX_CTL_MAXNAME) {
139 LIN_SDT_PROBE2(sysctl, linux_sysctl, wrong_length, la.nlen,
141 LIN_SDT_PROBE1(sysctl, linux_sysctl, return, ENOTDIR);
145 mib = malloc(la.nlen * sizeof(l_int), M_LINUX, M_WAITOK);
146 error = copyin(PTRIN(la.name), mib, la.nlen * sizeof(l_int));
148 LIN_SDT_PROBE1(sysctl, linux_sysctl, copyin_error, error);
149 LIN_SDT_PROBE1(sysctl, linux_sysctl, return, error);
160 case LINUX_KERN_VERSION:
161 error = handle_string(&la, version);
163 LIN_SDT_PROBE1(sysctl, linux_sysctl, return, error);
173 sb = sbuf_new(NULL, NULL, 20 + la.nlen * 5, SBUF_AUTOEXTEND);
175 linux_msg(td, "sysctl is not implemented");
176 LIN_SDT_PROBE1(sysctl, linux_sysctl, unsupported_sysctl,
177 "unknown sysctl, ENOMEM during lookup");
179 sbuf_printf(sb, "sysctl ");
180 for (i = 0; i < la.nlen; i++)
181 sbuf_printf(sb, "%c%d", (i) ? ',' : '{', mib[i]);
182 sbuf_printf(sb, "} is not implemented");
184 sysctl_string = sbuf_data(sb);
185 linux_msg(td, "%s", sbuf_data(sb));
186 LIN_SDT_PROBE1(sysctl, linux_sysctl, unsupported_sysctl,
193 LIN_SDT_PROBE1(sysctl, linux_sysctl, return, ENOTDIR);