[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.
 * 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 1.6 2007/01/09 00:27:55 imp 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.
e9ce8d39 A	13	* 4. Neither the name of the University nor the names of its contributors
	14	* may be used to endorse or promote products derived from this software
	15	* without specific prior written permission.
	16	*
	17	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	18	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	19	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	20	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	21	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	22	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	23	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	24	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	25	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	26	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	27	* SUCH DAMAGE.
	28	*/
	29
9385eb3d A	30	#if defined(LIBC_SCCS) && !defined(lint)
	31	static char sccsid[] = "@(#)sysctl.c 8.2 (Berkeley) 1/4/94";
	32	#endif /* LIBC_SCCS and not lint */
	33	#include <sys/cdefs.h>
1f2f436a	34	__FBSDID("$FreeBSD: src/lib/libc/gen/sysctl.c,v 1.6 2007/01/09 00:27:55 imp Exp $");
e9ce8d39 A	35
	36	#include <sys/param.h>
	37	#include <sys/sysctl.h>
	38
	39	#include <errno.h>
	40	#include <limits.h>
	41	#include <paths.h>
	42	#include <stdio.h>
	43	#include <unistd.h>
9385eb3d A	44	#include <string.h>
	45
	46	extern int __sysctl(int name, u_int namelen, void oldp, size_t *oldlenp,
	47	void *newp, size_t newlen);
e9ce8d39 A	48
	49	int
	50	sysctl(name, namelen, oldp, oldlenp, newp, newlen)
	51	int *name;
	52	u_int namelen;
	53	void oldp, newp;
	54	size_t *oldlenp, newlen;
	55	{
	56	if (name[0] != CTL_USER)
	57	return (__sysctl(name, namelen, oldp, oldlenp, newp, newlen));
	58
	59	if (newp != NULL) {
	60	errno = EPERM;
	61	return (-1);
	62	}
	63	if (namelen != 2) {
	64	errno = EINVAL;
	65	return (-1);
	66	}
	67
	68	switch (name[1]) {
	69	case USER_CS_PATH:
9385eb3d A	70	if (oldp && *oldlenp < sizeof(_PATH_STDPATH)) {
	71	errno = ENOMEM;
	72	return -1;
	73	}
e9ce8d39 A	74	*oldlenp = sizeof(_PATH_STDPATH);
	75	if (oldp != NULL)
	76	memmove(oldp, _PATH_STDPATH, sizeof(_PATH_STDPATH));
	77	return (0);
	78	}
	79
9385eb3d A	80	if (oldp && *oldlenp < sizeof(int)) {
	81	errno = ENOMEM;
	82	return (-1);
	83	}
e9ce8d39 A	84	*oldlenp = sizeof(int);
	85	if (oldp == NULL)
	86	return (0);
	87
	88	switch (name[1]) {
	89	case USER_BC_BASE_MAX:
	90	(int )oldp = BC_BASE_MAX;
	91	return (0);
	92	case USER_BC_DIM_MAX:
	93	(int )oldp = BC_DIM_MAX;
	94	return (0);
	95	case USER_BC_SCALE_MAX:
	96	(int )oldp = BC_SCALE_MAX;
	97	return (0);
	98	case USER_BC_STRING_MAX:
	99	(int )oldp = BC_STRING_MAX;
	100	return (0);
	101	case USER_COLL_WEIGHTS_MAX:
	102	(int )oldp = COLL_WEIGHTS_MAX;
	103	return (0);
	104	case USER_EXPR_NEST_MAX:
	105	(int )oldp = EXPR_NEST_MAX;
	106	return (0);
	107	case USER_LINE_MAX:
	108	(int )oldp = LINE_MAX;
	109	return (0);
	110	case USER_RE_DUP_MAX:
	111	(int )oldp = RE_DUP_MAX;
	112	return (0);
	113	case USER_POSIX2_VERSION:
	114	(int )oldp = _POSIX2_VERSION;
	115	return (0);
	116	case USER_POSIX2_C_BIND:
	117	#ifdef POSIX2_C_BIND
	118	(int )oldp = 1;
	119	#else
	120	(int )oldp = 0;
	121	#endif
	122	return (0);
	123	case USER_POSIX2_C_DEV:
	124	#ifdef POSIX2_C_DEV
	125	(int )oldp = 1;
	126	#else
	127	(int )oldp = 0;
	128	#endif
	129	return (0);
	130	case USER_POSIX2_CHAR_TERM:
	131	#ifdef POSIX2_CHAR_TERM
	132	(int )oldp = 1;
	133	#else
	134	(int )oldp = 0;
	135	#endif
	136	return (0);
	137	case USER_POSIX2_FORT_DEV:
	138	#ifdef POSIX2_FORT_DEV
	139	(int )oldp = 1;
	140	#else
	141	(int )oldp = 0;
	142	#endif
	143	return (0);
	144	case USER_POSIX2_FORT_RUN:
	145	#ifdef POSIX2_FORT_RUN
	146	(int )oldp = 1;
	147	#else
148	(int )oldp = 0;
149	#endif
150	return (0);
151	case USER_POSIX2_LOCALEDEF:
152	#ifdef POSIX2_LOCALEDEF
153	(int )oldp = 1;
154	#else
155	(int )oldp = 0;
156	#endif
157	return (0);
158	case USER_POSIX2_SW_DEV:
159	#ifdef POSIX2_SW_DEV
160	(int )oldp = 1;
161	#else
162	(int )oldp = 0;
163	#endif
164	return (0);
165	case USER_POSIX2_UPE:
166	#ifdef POSIX2_UPE
167	(int )oldp = 1;
168	#else
169	(int )oldp = 0;
170	#endif
171	return (0);
172	case USER_STREAM_MAX:
173	(int )oldp = FOPEN_MAX;
174	return (0);
175	case USER_TZNAME_MAX:
176	(int )oldp = NAME_MAX;
177	return (0);
178	default:
179	errno = EINVAL;
180	return (-1);
181	}
182	/* NOTREACHED */
183	}