1 /* $NetBSD: init_sysctl_base.c,v 1.9 2023/12/20 20:35:37 andvar Exp $ */
2
3 /*-
4 * Copyright (c) 2003, 2007, 2008, 2009 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Andrew Brown, and by Andrew Doran.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 __KERNEL_RCSID(0, "$NetBSD: init_sysctl_base.c,v 1.9 2023/12/20 20:35:37 andvar Exp $");
34
35 #include <sys/types.h>
36 #include <sys/param.h>
37 #include <sys/sysctl.h>
38 #include <sys/proc.h>
39 #include <sys/cpu.h>
40 #include <sys/kernel.h>
41 #include <sys/disklabel.h>
42
43 static int sysctl_setlen(SYSCTLFN_PROTO);
44
45 /*
46 * sets up the base nodes...
47 */
48 void
sysctl_basenode_init(void)49 sysctl_basenode_init(void)
50 {
51
52 sysctl_createv(NULL, 0, NULL, NULL,
53 CTLFLAG_PERMANENT,
54 CTLTYPE_NODE, "kern",
55 SYSCTL_DESCR("High kernel"),
56 NULL, 0, NULL, 0,
57 CTL_KERN, CTL_EOL);
58 sysctl_createv(NULL, 0, NULL, NULL,
59 CTLFLAG_PERMANENT,
60 CTLTYPE_NODE, "vm",
61 SYSCTL_DESCR("Virtual memory"),
62 NULL, 0, NULL, 0,
63 CTL_VM, CTL_EOL);
64 sysctl_createv(NULL, 0, NULL, NULL,
65 CTLFLAG_PERMANENT,
66 CTLTYPE_NODE, "vfs",
67 SYSCTL_DESCR("Filesystem"),
68 NULL, 0, NULL, 0,
69 CTL_VFS, CTL_EOL);
70 sysctl_createv(NULL, 0, NULL, NULL,
71 CTLFLAG_PERMANENT,
72 CTLTYPE_NODE, "net",
73 SYSCTL_DESCR("Networking"),
74 NULL, 0, NULL, 0,
75 CTL_NET, CTL_EOL);
76 sysctl_createv(NULL, 0, NULL, NULL,
77 CTLFLAG_PERMANENT,
78 CTLTYPE_NODE, "debug",
79 SYSCTL_DESCR("Debugging"),
80 NULL, 0, NULL, 0,
81 CTL_DEBUG, CTL_EOL);
82 sysctl_createv(NULL, 0, NULL, NULL,
83 CTLFLAG_PERMANENT,
84 CTLTYPE_NODE, "hw",
85 SYSCTL_DESCR("Generic CPU, I/O"),
86 NULL, 0, NULL, 0,
87 CTL_HW, CTL_EOL);
88 sysctl_createv(NULL, 0, NULL, NULL,
89 CTLFLAG_PERMANENT,
90 CTLTYPE_NODE, "machdep",
91 SYSCTL_DESCR("Machine dependent"),
92 NULL, 0, NULL, 0,
93 CTL_MACHDEP, CTL_EOL);
94 /*
95 * this node is inserted so that the sysctl nodes in libc can
96 * operate.
97 */
98 sysctl_createv(NULL, 0, NULL, NULL,
99 CTLFLAG_PERMANENT,
100 CTLTYPE_NODE, "user",
101 SYSCTL_DESCR("User-level"),
102 NULL, 0, NULL, 0,
103 CTL_USER, CTL_EOL);
104 sysctl_createv(NULL, 0, NULL, NULL,
105 CTLFLAG_PERMANENT,
106 CTLTYPE_NODE, "ddb",
107 SYSCTL_DESCR("In-kernel debugger"),
108 NULL, 0, NULL, 0,
109 CTL_DDB, CTL_EOL);
110 sysctl_createv(NULL, 0, NULL, NULL,
111 CTLFLAG_PERMANENT,
112 CTLTYPE_NODE, "proc",
113 SYSCTL_DESCR("Per-process"),
114 NULL, 0, NULL, 0,
115 CTL_PROC, CTL_EOL);
116 sysctl_createv(NULL, 0, NULL, NULL,
117 CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
118 CTLTYPE_NODE, "vendor",
119 SYSCTL_DESCR("Vendor specific"),
120 NULL, 0, NULL, 0,
121 CTL_VENDOR, CTL_EOL);
122 sysctl_createv(NULL, 0, NULL, NULL,
123 CTLFLAG_PERMANENT,
124 CTLTYPE_NODE, "emul",
125 SYSCTL_DESCR("Emulation settings"),
126 NULL, 0, NULL, 0,
127 CTL_EMUL, CTL_EOL);
128 sysctl_createv(NULL, 0, NULL, NULL,
129 CTLFLAG_PERMANENT,
130 CTLTYPE_NODE, "security",
131 SYSCTL_DESCR("Security"),
132 NULL, 0, NULL, 0,
133 CTL_SECURITY, CTL_EOL);
134 }
135
136 /*
137 * now add some nodes which both rump kernel and standard
138 * NetBSD both need, as rump cannot use sys/kern/init_sysctl.c
139 */
140 SYSCTL_SETUP(sysctl_kernbase_setup, "sysctl kern subtree base setup")
141 {
142
143 sysctl_createv(clog, 0, NULL, NULL,
144 CTLFLAG_PERMANENT,
145 CTLTYPE_STRING, "ostype",
146 SYSCTL_DESCR("Operating system type"),
147 NULL, 0, __UNCONST(&ostype), 0,
148 CTL_KERN, KERN_OSTYPE, CTL_EOL);
149 sysctl_createv(clog, 0, NULL, NULL,
150 CTLFLAG_PERMANENT,
151 CTLTYPE_STRING, "osrelease",
152 SYSCTL_DESCR("Operating system release"),
153 NULL, 0, __UNCONST(&osrelease), 0,
154 CTL_KERN, KERN_OSRELEASE, CTL_EOL);
155 sysctl_createv(clog, 0, NULL, NULL,
156 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
157 CTLTYPE_INT, "osrevision",
158 SYSCTL_DESCR("Operating system revision"),
159 NULL, __NetBSD_Version__, NULL, 0,
160 CTL_KERN, KERN_OSREV, CTL_EOL);
161 sysctl_createv(clog, 0, NULL, NULL,
162 CTLFLAG_PERMANENT,
163 CTLTYPE_STRING, "version",
164 SYSCTL_DESCR("Kernel version"),
165 NULL, 0, __UNCONST(&version), 0,
166 CTL_KERN, KERN_VERSION, CTL_EOL);
167 sysctl_createv(clog, 0, NULL, NULL,
168 CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
169 CTLTYPE_STRING, "hostname",
170 SYSCTL_DESCR("System hostname"),
171 sysctl_setlen, 0, hostname, MAXHOSTNAMELEN,
172 CTL_KERN, KERN_HOSTNAME, CTL_EOL);
173 sysctl_createv(clog, 0, NULL, NULL,
174 CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
175 CTLTYPE_STRING, "domainname",
176 SYSCTL_DESCR("YP domain name"),
177 sysctl_setlen, 0, domainname, MAXHOSTNAMELEN,
178 CTL_KERN, KERN_DOMAINNAME, CTL_EOL);
179 sysctl_createv(clog, 0, NULL, NULL,
180 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
181 CTLTYPE_INT, "rawpartition",
182 SYSCTL_DESCR("Raw partition of a disk"),
183 NULL, RAW_PART, NULL, 0,
184 CTL_KERN, KERN_RAWPARTITION, CTL_EOL);
185 }
186
187 static int
sysctl_hw_machine_arch(SYSCTLFN_ARGS)188 sysctl_hw_machine_arch(SYSCTLFN_ARGS)
189 {
190 struct sysctlnode node = *rnode;
191 #ifndef PROC_MACHINE_ARCH
192 #define PROC_MACHINE_ARCH(P) machine_arch
193 #endif
194
195 node.sysctl_data = PROC_MACHINE_ARCH(l->l_proc);
196 node.sysctl_size = strlen(node.sysctl_data) + 1;
197 return sysctl_lookup(SYSCTLFN_CALL(&node));
198 }
199
200 SYSCTL_SETUP(sysctl_hwbase_setup, "sysctl hw subtree base setup")
201 {
202 u_int u;
203 u_quad_t q;
204 const char *model = cpu_getmodel();
205
206 sysctl_createv(clog, 0, NULL, NULL,
207 CTLFLAG_PERMANENT,
208 CTLTYPE_STRING, "model",
209 SYSCTL_DESCR("Machine model"),
210 NULL, 0, __UNCONST(model), 0,
211 CTL_HW, HW_MODEL, CTL_EOL);
212 sysctl_createv(clog, 0, NULL, NULL,
213 CTLFLAG_PERMANENT,
214 CTLTYPE_STRING, "machine",
215 SYSCTL_DESCR("Machine class"),
216 NULL, 0, machine, 0,
217 CTL_HW, HW_MACHINE, CTL_EOL);
218 sysctl_createv(clog, 0, NULL, NULL,
219 CTLFLAG_PERMANENT|CTLFLAG_READONLY,
220 CTLTYPE_STRING, "machine_arch",
221 SYSCTL_DESCR("Machine CPU class"),
222 sysctl_hw_machine_arch, 0, NULL, 0,
223 CTL_HW, HW_MACHINE_ARCH, CTL_EOL);
224 sysctl_createv(clog, 0, NULL, NULL,
225 CTLFLAG_PERMANENT,
226 CTLTYPE_INT, "ncpu",
227 SYSCTL_DESCR("Number of CPUs configured"),
228 NULL, 0, &ncpu, 0,
229 CTL_HW, HW_NCPU, CTL_EOL);
230 sysctl_createv(clog, 0, NULL, NULL,
231 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
232 CTLTYPE_INT, "byteorder",
233 SYSCTL_DESCR("System byte order"),
234 NULL, BYTE_ORDER, NULL, 0,
235 CTL_HW, HW_BYTEORDER, CTL_EOL);
236 u = ((u_int)physmem > (UINT_MAX / PAGE_SIZE)) ?
237 UINT_MAX : physmem * PAGE_SIZE;
238 sysctl_createv(clog, 0, NULL, NULL,
239 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
240 CTLTYPE_INT, "physmem",
241 SYSCTL_DESCR("Bytes of physical memory"),
242 NULL, u, NULL, 0,
243 CTL_HW, HW_PHYSMEM, CTL_EOL);
244 sysctl_createv(clog, 0, NULL, NULL,
245 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
246 CTLTYPE_INT, "pagesize",
247 SYSCTL_DESCR("Software page size"),
248 NULL, PAGE_SIZE, NULL, 0,
249 CTL_HW, HW_PAGESIZE, CTL_EOL);
250 sysctl_createv(clog, 0, NULL, NULL,
251 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
252 CTLTYPE_INT, "alignbytes",
253 SYSCTL_DESCR("Alignment constraint for all possible "
254 "data types"),
255 NULL, ALIGNBYTES, NULL, 0,
256 CTL_HW, HW_ALIGNBYTES, CTL_EOL);
257 q = (u_quad_t)physmem * PAGE_SIZE;
258 sysctl_createv(clog, 0, NULL, NULL,
259 CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
260 CTLTYPE_QUAD, "physmem64",
261 SYSCTL_DESCR("Bytes of physical memory"),
262 NULL, q, NULL, 0,
263 CTL_HW, HW_PHYSMEM64, CTL_EOL);
264 sysctl_createv(clog, 0, NULL, NULL,
265 CTLFLAG_PERMANENT,
266 CTLTYPE_INT, "ncpuonline",
267 SYSCTL_DESCR("Number of CPUs online"),
268 NULL, 0, &ncpuonline, 0,
269 CTL_HW, HW_NCPUONLINE, CTL_EOL);
270 }
271
272 /*
273 * sysctl helper function for kern.hostname and kern.domainname.
274 * resets the relevant recorded length when the underlying name is
275 * changed.
276 */
277 static int
sysctl_setlen(SYSCTLFN_ARGS)278 sysctl_setlen(SYSCTLFN_ARGS)
279 {
280 int error;
281
282 error = sysctl_lookup(SYSCTLFN_CALL(rnode));
283 if (error || newp == NULL)
284 return (error);
285
286 switch (rnode->sysctl_num) {
287 case KERN_HOSTNAME:
288 hostnamelen = strlen((const char*)rnode->sysctl_data);
289 break;
290 case KERN_DOMAINNAME:
291 domainnamelen = strlen((const char*)rnode->sysctl_data);
292 break;
293 }
294
295 return (0);
296 }
297