mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-22 11:17:19 +00:00
87 lines
2.8 KiB
C
87 lines
2.8 KiB
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[] = "@(#)confstr.c 8.1 (Berkeley) 6/4/93";
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/sysctl.h>
|
|
|
|
#include <errno.h>
|
|
#include <paths.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
|
|
size_t
|
|
confstr(name, buf, len)
|
|
int name;
|
|
char *buf;
|
|
size_t len;
|
|
{
|
|
size_t tlen;
|
|
int mib[2], sverrno;
|
|
char *p;
|
|
|
|
switch (name) {
|
|
case _CS_PATH:
|
|
mib[0] = CTL_USER;
|
|
mib[1] = USER_CS_PATH;
|
|
if (sysctl(mib, 2, NULL, &tlen, NULL, 0) == -1)
|
|
return (-1);
|
|
if (len != 0 && buf != NULL) {
|
|
if ((p = malloc(tlen)) == NULL)
|
|
return (-1);
|
|
if (sysctl(mib, 2, p, &tlen, NULL, 0) == -1) {
|
|
sverrno = errno;
|
|
free(p);
|
|
errno = sverrno;
|
|
return (-1);
|
|
}
|
|
/*
|
|
* POSIX 1003.2 requires partial return of
|
|
* the string -- that should be *real* useful.
|
|
*/
|
|
(void)strncpy(buf, p, len - 1);
|
|
buf[len - 1] = '\0';
|
|
free(p);
|
|
}
|
|
return (tlen + 1);
|
|
default:
|
|
errno = EINVAL;
|
|
return (0);
|
|
}
|
|
/* NOTREACHED */
|
|
}
|