1/*	$NetBSD: kern_info_43.c,v 1.32.8.2 2008/11/01 21:22:25 christos Exp $	*/
2
3/*
4 * Copyright (c) 1982, 1986, 1991, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 *	@(#)subr_xxx.c	8.1 (Berkeley) 6/10/93
32 */
33
34#include <sys/cdefs.h>
35__KERNEL_RCSID(0, "$NetBSD: kern_info_43.c,v 1.32.8.2 2008/11/01 21:22:25 christos Exp $");
36
37#include <sys/param.h>
38#include <sys/systm.h>
39#include <sys/filedesc.h>
40#include <sys/kernel.h>
41#include <sys/vnode.h>
42#include <sys/proc.h>
43#include <sys/file.h>
44#include <sys/socket.h>
45#include <sys/socketvar.h>
46#include <sys/stat.h>
47#include <sys/ioctl.h>
48#include <sys/fcntl.h>
49#include <sys/syslog.h>
50#include <sys/unistd.h>
51#include <sys/resourcevar.h>
52#include <sys/kauth.h>
53
54#include <uvm/uvm_extern.h>
55#include <sys/sysctl.h>
56
57#include <sys/mount.h>
58#include <sys/syscallargs.h>
59#include <compat/sys/time.h>
60
61int
62compat_43_sys_getdtablesize(struct lwp *l, const void *v, register_t *retval)
63{
64	struct proc *p = l->l_proc;
65
66	mutex_enter(p->p_lock);
67	*retval = min((int)p->p_rlimit[RLIMIT_NOFILE].rlim_cur, maxfiles);
68	mutex_exit(p->p_lock);
69	return (0);
70}
71
72
73/* ARGSUSED */
74int
75compat_43_sys_gethostid(struct lwp *l, const void *v, register_t *retval)
76{
77
78	*(int32_t *)retval = hostid;
79	return (0);
80}
81
82
83/*ARGSUSED*/
84int
85compat_43_sys_gethostname(struct lwp *l, const struct compat_43_sys_gethostname_args *uap, register_t *retval)
86{
87	/* {
88		syscallarg(char *) hostname;
89		syscallarg(u_int) len;
90	} */
91	int name[2];
92	size_t sz;
93
94	name[0] = CTL_KERN;
95	name[1] = KERN_HOSTNAME;
96	sz = SCARG(uap, len);
97	return (old_sysctl(&name[0], 2, SCARG(uap, hostname), &sz, 0, 0, l));
98}
99
100#define	KINFO_PROC		(0<<8)
101#define	KINFO_RT		(1<<8)
102#define	KINFO_VNODE		(2<<8)
103#define	KINFO_FILE		(3<<8)
104#define	KINFO_METER		(4<<8)
105#define	KINFO_LOADAVG		(5<<8)
106#define	KINFO_CLOCKRATE		(6<<8)
107#define	KINFO_BSDI_SYSINFO	(101<<8)
108
109
110/*
111 * The string data is appended to the end of the bsdi_si structure during
112 * copyout. The "char *" offsets in the bsdi_si struct are relative to the
113 * base of the bsdi_si struct.
114 */
115struct bsdi_si {
116        char    *machine;
117        char    *cpu_model;
118        long    ncpu;
119        long    cpuspeed;
120        long    hwflags;
121        u_long  physmem;
122        u_long  usermem;
123        u_long  pagesize;
124
125        char    *ostype;
126        char    *osrelease;
127        long    os_revision;
128        long    posix1_version;
129        char    *version;
130
131        long    hz;
132        long    profhz;
133        int     ngroups_max;
134        long    arg_max;
135        long    open_max;
136        long    child_max;
137
138        struct  timeval50 boottime;
139        char    *hostname;
140};
141
142int
143compat_43_sys_getkerninfo(struct lwp *l, const struct compat_43_sys_getkerninfo_args *uap, register_t *retval)
144{
145	/* {
146		syscallarg(int) op;
147		syscallarg(char *) where;
148		syscallarg(int *) size;
149		syscallarg(int) arg;
150	} */
151	int error, name[6];
152	size_t size;
153
154	if (SCARG(uap, size) && (error = copyin((void *)SCARG(uap, size),
155	    (void *)&size, sizeof(size))))
156		return (error);
157
158	switch (SCARG(uap, op) & 0xff00) {
159
160	case KINFO_RT:
161		name[0] = CTL_NET;
162		name[1] = PF_ROUTE;
163		name[2] = 0;
164		name[3] = (SCARG(uap, op) & 0xff0000) >> 16;
165		name[4] = SCARG(uap, op) & 0xff;
166		name[5] = SCARG(uap, arg);
167		error = old_sysctl(&name[0], 6, SCARG(uap, where), &size,
168				   NULL, 0, l);
169		break;
170
171	case KINFO_VNODE:
172		name[0] = CTL_KERN;
173		name[1] = KERN_VNODE;
174		error = old_sysctl(&name[0], 2, SCARG(uap, where), &size,
175				   NULL, 0, l);
176		break;
177
178	case KINFO_PROC:
179		name[0] = CTL_KERN;
180		name[1] = KERN_PROC;
181		name[2] = SCARG(uap, op) & 0xff;
182		name[3] = SCARG(uap, arg);
183		error = old_sysctl(&name[0], 4, SCARG(uap, where), &size,
184				   NULL, 0, l);
185		break;
186
187	case KINFO_FILE:
188		name[0] = CTL_KERN;
189		name[1] = KERN_FILE;
190		error = old_sysctl(&name[0], 2, SCARG(uap, where), &size,
191				   NULL, 0, l);
192		break;
193
194	case KINFO_METER:
195		name[0] = CTL_VM;
196		name[1] = VM_METER;
197		error = old_sysctl(&name[0], 2, SCARG(uap, where), &size,
198				   NULL, 0, l);
199		break;
200
201	case KINFO_LOADAVG:
202		name[0] = CTL_VM;
203		name[1] = VM_LOADAVG;
204		error = old_sysctl(&name[0], 2, SCARG(uap, where), &size,
205				   NULL, 0, l);
206		break;
207
208	case KINFO_CLOCKRATE:
209		name[0] = CTL_KERN;
210		name[1] = KERN_CLOCKRATE;
211		error = old_sysctl(&name[0], 2, SCARG(uap, where), &size,
212				   NULL, 0, l);
213		break;
214
215
216	case KINFO_BSDI_SYSINFO:
217		{
218			size_t len;
219			struct bsdi_si *usi =
220			    (struct bsdi_si *) SCARG(uap, where);
221			struct bsdi_si ksi;
222			struct timeval tv;
223			char *us = (char *) &usi[1];
224
225			if (usi == NULL) {
226				size = sizeof(ksi) +
227				    strlen(ostype) + strlen(cpu_model) +
228				    strlen(osrelease) + strlen(machine) +
229				    strlen(version) + strlen(hostname) + 6;
230				error = 0;
231				break;
232			}
233
234#define COPY(fld)							\
235			ksi.fld = us - (u_long) usi;			\
236			if ((error = copyoutstr(fld, us, 1024, &len)) != 0)\
237				return error;				\
238			us += len
239
240			COPY(machine);
241			COPY(cpu_model);
242			ksi.ncpu = ncpu;		/* XXX */
243			ksi.cpuspeed = 40;		/* XXX */
244			ksi.hwflags = 0;		/* XXX */
245			ksi.physmem = ctob(physmem);
246			ksi.usermem = ctob(physmem);	/* XXX */
247			ksi.pagesize = PAGE_SIZE;
248
249			COPY(ostype);
250			COPY(osrelease);
251			ksi.os_revision = NetBSD;	/* XXX */
252			ksi.posix1_version = _POSIX_VERSION;
253			COPY(version);			/* XXX */
254
255			ksi.hz = hz;
256			ksi.profhz = profhz;
257			ksi.ngroups_max = NGROUPS_MAX;
258			ksi.arg_max = ARG_MAX;
259			ksi.open_max = OPEN_MAX;
260			ksi.child_max = CHILD_MAX;
261
262			TIMESPEC_TO_TIMEVAL(&tv, &boottime);
263			timeval_to_timeval50(&tv, &ksi.boottime);
264			COPY(hostname);
265
266			size = (us - (char *) &usi[1]) + sizeof(ksi);
267
268			if ((error = copyout(&ksi, usi, sizeof(ksi))) != 0)
269				return error;
270		}
271		break;
272
273	default:
274		return (EOPNOTSUPP);
275	}
276	if (error)
277		return (error);
278	*retval = size;
279	if (SCARG(uap, size))
280		error = copyout((void *)&size, (void *)SCARG(uap, size),
281		    sizeof(size));
282	return (error);
283}
284
285
286/* ARGSUSED */
287int
288compat_43_sys_sethostid(struct lwp *l, const struct compat_43_sys_sethostid_args *uap, register_t *retval)
289{
290	long uhostid;
291	int name[2];
292
293	uhostid = SCARG(uap, hostid);
294	name[0] = CTL_KERN;
295	name[1] = KERN_HOSTID;
296
297	return (old_sysctl(&name[0], 2, 0, 0, &uhostid, sizeof(long), l));
298}
299
300
301/* ARGSUSED */
302int
303compat_43_sys_sethostname(struct lwp *l, const struct compat_43_sys_sethostname_args *uap, register_t *retval)
304{
305	int name[2];
306
307	name[0] = CTL_KERN;
308	name[1] = KERN_HOSTNAME;
309	return (old_sysctl(&name[0], 2, 0, 0, SCARG(uap, hostname),
310			   SCARG(uap, len), l));
311}
312