[apple/libc.git] / gen / FreeBSD / sysctl.c

/*-
 * Copyright (c) 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)sysctl.c	8.2 (Berkeley) 1/4/94";
#endif /* LIBC_SCCS and not lint */
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/lib/libc/gen/sysctl.c,v 1.5 2003/02/16 17:29:09 nectar Exp $");

#include <sys/param.h>
#include <sys/sysctl.h>

#include <errno.h>
#include <limits.h>
#include <paths.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>

extern int __sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp,
    void *newp, size_t newlen);

int
sysctl(name, namelen, oldp, oldlenp, newp, newlen)
	int *name;
	u_int namelen;
	void *oldp, *newp;
	size_t *oldlenp, newlen;
{
	if (name[0] != CTL_USER)
		return (__sysctl(name, namelen, oldp, oldlenp, newp, newlen));

	if (newp != NULL) {
		errno = EPERM;
		return (-1);
	}
	if (namelen != 2) {
		errno = EINVAL;
		return (-1);
	}

	switch (name[1]) {
	case USER_CS_PATH:
		if (oldp && *oldlenp < sizeof(_PATH_STDPATH)) {
			errno = ENOMEM;
			return -1;
		}
		*oldlenp = sizeof(_PATH_STDPATH);
		if (oldp != NULL)
			memmove(oldp, _PATH_STDPATH, sizeof(_PATH_STDPATH));
		return (0);
	}

	if (oldp && *oldlenp < sizeof(int)) {
		errno = ENOMEM;
		return (-1);
	}
	*oldlenp = sizeof(int);
	if (oldp == NULL)
		return (0);

	switch (name[1]) {
	case USER_BC_BASE_MAX:
		*(int *)oldp = BC_BASE_MAX;
		return (0);
	case USER_BC_DIM_MAX:
		*(int *)oldp = BC_DIM_MAX;
		return (0);
	case USER_BC_SCALE_MAX:
		*(int *)oldp = BC_SCALE_MAX;
		return (0);
	case USER_BC_STRING_MAX:
		*(int *)oldp = BC_STRING_MAX;
		return (0);
	case USER_COLL_WEIGHTS_MAX:
		*(int *)oldp = COLL_WEIGHTS_MAX;
		return (0);
	case USER_EXPR_NEST_MAX:
		*(int *)oldp = EXPR_NEST_MAX;
		return (0);
	case USER_LINE_MAX:
		*(int *)oldp = LINE_MAX;
		return (0);
	case USER_RE_DUP_MAX:
		*(int *)oldp = RE_DUP_MAX;
		return (0);
	case USER_POSIX2_VERSION:
		*(int *)oldp = _POSIX2_VERSION;
		return (0);
	case USER_POSIX2_C_BIND:
#ifdef POSIX2_C_BIND
		*(int *)oldp = 1;
#else
		*(int *)oldp = 0;
#endif
		return (0);
	case USER_POSIX2_C_DEV:
#ifdef	POSIX2_C_DEV
		*(int *)oldp = 1;
#else
		*(int *)oldp = 0;
#endif
		return (0);
	case USER_POSIX2_CHAR_TERM:
#ifdef	POSIX2_CHAR_TERM
		*(int *)oldp = 1;
#else
		*(int *)oldp = 0;
#endif
		return (0);
	case USER_POSIX2_FORT_DEV:
#ifdef	POSIX2_FORT_DEV
		*(int *)oldp = 1;
#else
		*(int *)oldp = 0;
#endif
		return (0);
	case USER_POSIX2_FORT_RUN:
#ifdef	POSIX2_FORT_RUN
		*(int *)oldp = 1;
#else
		*(int *)oldp = 0;
#endif
		return (0);
	case USER_POSIX2_LOCALEDEF:
#ifdef	POSIX2_LOCALEDEF
		*(int *)oldp = 1;
#else
		*(int *)oldp = 0;
#endif
		return (0);
	case USER_POSIX2_SW_DEV:
#ifdef	POSIX2_SW_DEV
		*(int *)oldp = 1;
#else
		*(int *)oldp = 0;
#endif
		return (0);
	case USER_POSIX2_UPE:
#ifdef	POSIX2_UPE
		*(int *)oldp = 1;
#else
		*(int *)oldp = 0;
#endif
		return (0);
	case USER_STREAM_MAX:
		*(int *)oldp = FOPEN_MAX;
		return (0);
	case USER_TZNAME_MAX:
		*(int *)oldp = NAME_MAX;
		return (0);
	default:
		errno = EINVAL;
		return (-1);
	}
	/* NOTREACHED */
}
Commit	Line	Data
9385eb3d	1	/*-
e9ce8d39 A	2	* Copyright (c) 1993
	3	* The Regents of the University of California. 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	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
	13	* 3. All advertising materials mentioning features or use of this software
	14	* must display the following acknowledgement:
	15	* This product includes software developed by the University of
	16	* California, Berkeley and its contributors.
	17	* 4. Neither the name of the University nor the names of its contributors
	18	* may be used to endorse or promote products derived from this software
	19	* without specific prior written permission.
	20	*
	21	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	22	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	23	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	24	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	25	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	26	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	27	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	28	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	29	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	30	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	31	* SUCH DAMAGE.
	32	*/
	33
9385eb3d A	34	#if defined(LIBC_SCCS) && !defined(lint)
	35	static char sccsid[] = "@(#)sysctl.c 8.2 (Berkeley) 1/4/94";
	36	#endif /* LIBC_SCCS and not lint */
	37	#include <sys/cdefs.h>
	38	__FBSDID("$FreeBSD: src/lib/libc/gen/sysctl.c,v 1.5 2003/02/16 17:29:09 nectar Exp $");
e9ce8d39 A	39
	40	#include <sys/param.h>
	41	#include <sys/sysctl.h>
	42
	43	#include <errno.h>
	44	#include <limits.h>
	45	#include <paths.h>
	46	#include <stdio.h>
	47	#include <unistd.h>
9385eb3d A	48	#include <string.h>
	49
	50	extern int __sysctl(int name, u_int namelen, void oldp, size_t *oldlenp,
	51	void *newp, size_t newlen);
e9ce8d39 A	52
	53	int
	54	sysctl(name, namelen, oldp, oldlenp, newp, newlen)
	55	int *name;
	56	u_int namelen;
	57	void oldp, newp;
	58	size_t *oldlenp, newlen;
	59	{
	60	if (name[0] != CTL_USER)
	61	return (__sysctl(name, namelen, oldp, oldlenp, newp, newlen));
	62
	63	if (newp != NULL) {
	64	errno = EPERM;
	65	return (-1);
	66	}
	67	if (namelen != 2) {
	68	errno = EINVAL;
	69	return (-1);
	70	}
	71
	72	switch (name[1]) {
	73	case USER_CS_PATH:
9385eb3d A	74	if (oldp && *oldlenp < sizeof(_PATH_STDPATH)) {
	75	errno = ENOMEM;
	76	return -1;
	77	}
e9ce8d39 A	78	*oldlenp = sizeof(_PATH_STDPATH);
	79	if (oldp != NULL)
	80	memmove(oldp, _PATH_STDPATH, sizeof(_PATH_STDPATH));
	81	return (0);
	82	}
	83
9385eb3d A	84	if (oldp && *oldlenp < sizeof(int)) {
	85	errno = ENOMEM;
	86	return (-1);
	87	}
e9ce8d39 A	88	*oldlenp = sizeof(int);
	89	if (oldp == NULL)
	90	return (0);
	91
	92	switch (name[1]) {
	93	case USER_BC_BASE_MAX:
	94	(int )oldp = BC_BASE_MAX;
	95	return (0);
	96	case USER_BC_DIM_MAX:
	97	(int )oldp = BC_DIM_MAX;
	98	return (0);
	99	case USER_BC_SCALE_MAX:
	100	(int )oldp = BC_SCALE_MAX;
	101	return (0);
	102	case USER_BC_STRING_MAX:
	103	(int )oldp = BC_STRING_MAX;
	104	return (0);
	105	case USER_COLL_WEIGHTS_MAX:
	106	(int )oldp = COLL_WEIGHTS_MAX;
	107	return (0);
	108	case USER_EXPR_NEST_MAX:
	109	(int )oldp = EXPR_NEST_MAX;
	110	return (0);
	111	case USER_LINE_MAX:
	112	(int )oldp = LINE_MAX;
	113	return (0);
	114	case USER_RE_DUP_MAX:
	115	(int )oldp = RE_DUP_MAX;
	116	return (0);
	117	case USER_POSIX2_VERSION:
	118	(int )oldp = _POSIX2_VERSION;
	119	return (0);
	120	case USER_POSIX2_C_BIND:
	121	#ifdef POSIX2_C_BIND
	122	(int )oldp = 1;
	123	#else
	124	(int )oldp = 0;
	125	#endif
	126	return (0);
	127	case USER_POSIX2_C_DEV:
	128	#ifdef POSIX2_C_DEV
	129	(int )oldp = 1;
	130	#else
	131	(int )oldp = 0;
	132	#endif
	133	return (0);
	134	case USER_POSIX2_CHAR_TERM:
	135	#ifdef POSIX2_CHAR_TERM
	136	(int )oldp = 1;
	137	#else
	138	(int )oldp = 0;
	139	#endif
	140	return (0);
	141	case USER_POSIX2_FORT_DEV:
	142	#ifdef POSIX2_FORT_DEV
	143	(int )oldp = 1;
	144	#else
	145	(int )oldp = 0;
	146	#endif
	147	return (0);
	148	case USER_POSIX2_FORT_RUN:
	149	#ifdef POSIX2_FORT_RUN
	150	(int )oldp = 1;
	151	#else
152	(int )oldp = 0;
153	#endif
154	return (0);
155	case USER_POSIX2_LOCALEDEF:
156	#ifdef POSIX2_LOCALEDEF
157	(int )oldp = 1;
158	#else
159	(int )oldp = 0;
160	#endif
161	return (0);
162	case USER_POSIX2_SW_DEV:
163	#ifdef POSIX2_SW_DEV
164	(int )oldp = 1;
165	#else
166	(int )oldp = 0;
167	#endif
168	return (0);
169	case USER_POSIX2_UPE:
170	#ifdef POSIX2_UPE
171	(int )oldp = 1;
172	#else
173	(int )oldp = 0;
174	#endif
175	return (0);
176	case USER_STREAM_MAX:
177	(int )oldp = FOPEN_MAX;
178	return (0);
179	case USER_TZNAME_MAX:
180	(int )oldp = NAME_MAX;
181	return (0);
182	default:
183	errno = EINVAL;
184	return (-1);
185	}
186	/* NOTREACHED */
187	}