2 * Copyright (c) 2001 Marcel Moolenaar
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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.
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include "opt_compat.h"
33 #include "opt_kdtrace.h"
35 #include <sys/param.h>
36 #include <sys/kernel.h>
38 #include <sys/malloc.h>
39 #include <sys/mutex.h>
42 #include <sys/sysctl.h>
43 #include <sys/systm.h>
47 #include <machine/../linux32/linux.h>
48 #include <machine/../linux32/linux32_proto.h>
50 #include <machine/../linux/linux.h>
51 #include <machine/../linux/linux_proto.h>
54 #include <compat/linux/linux_dtrace.h>
55 #include <compat/linux/linux_misc.h>
56 #include <compat/linux/linux_util.h>
58 #define LINUX_CTL_KERN 1
59 #define LINUX_CTL_VM 2
60 #define LINUX_CTL_NET 3
61 #define LINUX_CTL_PROC 4
62 #define LINUX_CTL_FS 5
63 #define LINUX_CTL_DEBUG 6
64 #define LINUX_CTL_DEV 7
65 #define LINUX_CTL_BUS 8
68 #define LINUX_KERN_OSTYPE 1
69 #define LINUX_KERN_OSRELEASE 2
70 #define LINUX_KERN_OSREV 3
71 #define LINUX_KERN_VERSION 4
74 LIN_SDT_PROVIDER_DECLARE(LINUX_DTRACE);
77 * DTrace probes in this module.
79 LIN_SDT_PROBE_DEFINE2(sysctl, handle_string, entry, "struct l___sysctl_args *",
81 LIN_SDT_PROBE_DEFINE1(sysctl, handle_string, copyout_error, "int");
82 LIN_SDT_PROBE_DEFINE1(sysctl, handle_string, return, "int");
83 LIN_SDT_PROBE_DEFINE2(sysctl, linux_sysctl, entry, "struct l___sysctl_args *",
85 LIN_SDT_PROBE_DEFINE1(sysctl, linux_sysctl, copyin_error, "int");
86 LIN_SDT_PROBE_DEFINE2(sysctl, linux_sysctl, wrong_length, "int", "int");
87 LIN_SDT_PROBE_DEFINE1(sysctl, linux_sysctl, unsupported_sysctl, "char *");
88 LIN_SDT_PROBE_DEFINE1(sysctl, linux_sysctl, return, "int");
91 handle_string(struct l___sysctl_args *la, char *value)
95 LIN_SDT_PROBE2(sysctl, handle_string, entry, la, value);
97 if (la->oldval != 0) {
98 l_int len = strlen(value);
99 error = copyout(value, PTRIN(la->oldval), len + 1);
100 if (!error && la->oldlenp != 0)
101 error = copyout(&len, PTRIN(la->oldlenp), sizeof(len));
103 LIN_SDT_PROBE1(sysctl, handle_string, copyout_error,
105 LIN_SDT_PROBE1(sysctl, handle_string, return, error);
110 if (la->newval != 0) {
111 LIN_SDT_PROBE1(sysctl, handle_string, return, ENOTDIR);
115 LIN_SDT_PROBE1(sysctl, handle_string, return, 0);
120 linux_sysctl(struct thread *td, struct linux_sysctl_args *args)
122 struct l___sysctl_args la;
128 LIN_SDT_PROBE2(sysctl, linux_sysctl, entry, td, args->args);
130 error = copyin(args->args, &la, sizeof(la));
132 LIN_SDT_PROBE1(sysctl, linux_sysctl, copyin_error, error);
133 LIN_SDT_PROBE1(sysctl, linux_sysctl, return, error);
137 if (la.nlen <= 0 || la.nlen > LINUX_CTL_MAXNAME) {
138 LIN_SDT_PROBE2(sysctl, linux_sysctl, wrong_length, la.nlen,
140 LIN_SDT_PROBE1(sysctl, linux_sysctl, return, ENOTDIR);
144 mib = malloc(la.nlen * sizeof(l_int), M_TEMP, M_WAITOK);
145 error = copyin(PTRIN(la.name), mib, la.nlen * sizeof(l_int));
147 LIN_SDT_PROBE1(sysctl, linux_sysctl, copyin_error, error);
148 LIN_SDT_PROBE1(sysctl, linux_sysctl, return, error);
159 case LINUX_KERN_VERSION:
160 error = handle_string(&la, version);
162 LIN_SDT_PROBE1(sysctl, linux_sysctl, return, error);
172 sb = sbuf_new(NULL, NULL, 20 + la.nlen * 5, SBUF_AUTOEXTEND);
174 linux_msg(td, "sysctl is not implemented");
175 LIN_SDT_PROBE1(sysctl, linux_sysctl, unsupported_sysctl,
176 "unknown sysctl, ENOMEM during lookup");
178 sbuf_printf(sb, "sysctl ");
179 for (i = 0; i < la.nlen; i++)
180 sbuf_printf(sb, "%c%d", (i) ? ',' : '{', mib[i]);
181 sbuf_printf(sb, "} is not implemented");
183 sysctl_string = sbuf_data(sb);
184 linux_msg(td, "%s", sbuf_data(sb));
185 LIN_SDT_PROBE1(sysctl, linux_sysctl, unsupported_sysctl,
192 LIN_SDT_PROBE1(sysctl, linux_sysctl, return, ENOTDIR);