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/* $OpenBSD: confstr.c,v 1.10 2013/03/07 06:00:18 guenther Exp $ */
/*-
* 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. 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.
*/
#include <errno.h>
#include <paths.h>
#include <string.h>
#include <unistd.h>
static const char v6_width_restricted_envs[] = {
#ifdef __LP64__
"POSIX_V6_LP64_OFF64\n"
"POSIX_V6_LPBIG_OFFBIG"
#else
"POSIX_V6_ILP32_OFFBIG"
#endif
};
static const char v7_width_restricted_envs[] = {
#ifdef __LP64__
"POSIX_V7_LP64_OFF64\n"
"POSIX_V7_LPBIG_OFFBIG"
#else
"POSIX_V7_ILP32_OFFBIG"
#endif
};
size_t
confstr(int name, char *buf, size_t len)
{
switch (name) {
case _CS_PATH:
return (strlcpy(buf, _PATH_STDPATH, len) + 1);
/* no configuration-defined value */
case _CS_POSIX_V6_ILP32_OFF32_CFLAGS:
case _CS_POSIX_V6_ILP32_OFF32_LDFLAGS:
case _CS_POSIX_V6_ILP32_OFF32_LIBS:
case _CS_POSIX_V7_ILP32_OFF32_CFLAGS:
case _CS_POSIX_V7_ILP32_OFF32_LDFLAGS:
case _CS_POSIX_V7_ILP32_OFF32_LIBS:
return (0);
/* these are either NULL or empty, depending on the platform */
case _CS_POSIX_V6_ILP32_OFFBIG_CFLAGS:
case _CS_POSIX_V6_ILP32_OFFBIG_LDFLAGS:
case _CS_POSIX_V6_ILP32_OFFBIG_LIBS:
case _CS_POSIX_V7_ILP32_OFFBIG_CFLAGS:
case _CS_POSIX_V7_ILP32_OFFBIG_LDFLAGS:
case _CS_POSIX_V7_ILP32_OFFBIG_LIBS:
#ifdef __LP64__
return (0);
#else
if (len > 0)
buf[0] = '\0';
return (1);
#endif
case _CS_POSIX_V6_LP64_OFF64_CFLAGS:
case _CS_POSIX_V6_LP64_OFF64_LDFLAGS:
case _CS_POSIX_V6_LP64_OFF64_LIBS:
case _CS_POSIX_V6_LPBIG_OFFBIG_CFLAGS:
case _CS_POSIX_V6_LPBIG_OFFBIG_LDFLAGS:
case _CS_POSIX_V6_LPBIG_OFFBIG_LIBS:
case _CS_POSIX_V7_LP64_OFF64_CFLAGS:
case _CS_POSIX_V7_LP64_OFF64_LDFLAGS:
case _CS_POSIX_V7_LP64_OFF64_LIBS:
case _CS_POSIX_V7_LPBIG_OFFBIG_CFLAGS:
case _CS_POSIX_V7_LPBIG_OFFBIG_LDFLAGS:
case _CS_POSIX_V7_LPBIG_OFFBIG_LIBS:
#ifdef __LP64__
if (len > 0)
buf[0] = '\0';
return (1);
#else
return (0);
#endif
/* zero length strings */
case _CS_POSIX_V7_THREADS_CFLAGS:
case _CS_V6_ENV:
case _CS_V7_ENV:
if (len > 0)
buf[0] = '\0';
return (1);
case _CS_POSIX_V7_THREADS_LDFLAGS:
return (strlcpy(buf, "-lpthread", len) + 1);
case _CS_POSIX_V6_WIDTH_RESTRICTED_ENVS:
return (strlcpy(buf, v6_width_restricted_envs, len) + 1);
case _CS_POSIX_V7_WIDTH_RESTRICTED_ENVS:
return (strlcpy(buf, v7_width_restricted_envs, len) + 1);
default:
errno = EINVAL;
return (0);
}
/* NOTREACHED */
}
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