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/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
* @brief Implementation for confstr method
*/
/*
* Copyright (C) 2020 Eshan Dhawan
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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 <sys/cdefs.h>
#include <sys/param.h>
#include <errno.h>
#include <limits.h>
#include <string.h>
#include <unistd.h>
/* Many programming environment flags have same values
* this block is added to raise error if the flags value change
*/
#if (_CS_POSIX_V6_ILP32_OFF32_CFLAGS != _CS_POSIX_V7_ILP32_OFF32_CFLAGS)
#error "_CS_POSIX_V6_ILP32_OFF32_CFLAGS and _CS_POSIX_V7_ILP32_OFF32_CFLAGS flag values not equal"
#endif
#if (_CS_POSIX_V6_ILP32_OFF32_LDFLAGS != _CS_POSIX_V7_ILP32_OFF32_LDFLAGS)
#error "_CS_POSIX_V6_ILP32_OFF32_LDFLAGS and _CS_POSIX_V7_ILP32_OFF32_LDFLAGS flag values not equal"
#endif
#if (_CS_POSIX_V6_ILP32_OFF32_LIBS!= _CS_POSIX_V7_ILP32_OFF32_LIBS)
#error "_CS_POSIX_V6_ILP32_OFF32_LIBS and _CS_POSIX_V7_ILP32_OFF32_LIBS flag values not equal"
#endif
#if (_CS_POSIX_V6_LPBIG_OFFBIG_CFLAGS != _CS_POSIX_V7_LPBIG_OFFBIG_CFLAGS)
#error "_CS_POSIX_V6_LPBIG_OFFBIG_CFLAG and _CS_POSIX_V7_LPBIG_OFFBIG_CFLAG flag values not equal"
#endif
#if (_CS_POSIX_V6_LPBIG_OFFBIG_LDFLAGS != _CS_POSIX_V7_LPBIG_OFFBIG_LDFLAGS)
#error "_CS_POSIX_V6_LPBIG_OFFBIG_LDFLAGS and _CS_POSIX_V7_LPBIG_OFFBIG_LDFLAGS flag values not equal"
#endif
#if (_CS_POSIX_V7_LPBIG_OFFBIG_LIBS != _CS_POSIX_V7_LPBIG_OFFBIG_LIBS)
#error "_CS_POSIX_V6_LPBIG_OFFBIG_LIBS and _CS_POSIX_V7_LPBIG_OFFBIG_LIBS flag values not equal"
#endif
#if (_CS_POSIX_V6_ILP32_OFFBIG_CFLAGS != _CS_POSIX_V7_ILP32_OFFBIG_CFLAGS)
#error "_CS_POSIX_V6_ILP32_OFFBIG_CFLAGS and _CS_POSIX_V7_ILP32_OFFBIG_CFLAGS flag values not equal"
#endif
#if (_CS_POSIX_V7_ILP32_OFFBIG_LDFLAGS != _CS_POSIX_V6_ILP32_OFFBIG_LDFLAGS)
#error "_CS_POSIX_V6_ILP32_OFFBIG_LDFLAGS and _CS_POSIX_V7_ILP32_OFFBIG_LDFLAGS flag values not equal"
#endif
#if (_CS_POSIX_V7_ILP32_OFFBIG_LIBS != _CS_POSIX_V7_ILP32_OFFBIG_LIBS)
#error "_CS_POSIX_V6_ILP32_OFFBIG_LIBS and _CS_POSIX_V7_ILP32_OFFBIG_LIBS flag values not equal"
#endif
#if (_CS_POSIX_V6_LP64_OFF64_CFLAGS != _CS_POSIX_V7_LP64_OFF64_CFLAGS)
#error "_CS_POSIX_V6_LP64_OFF64_CFLAGS and _CS_POSIX_V7_LP64_OFF64_CFLAGS flag values not equal"
#endif
#if (_CS_POSIX_V6_LP64_OFF64_LDFLAGS != _CS_POSIX_V7_LP64_OFF64_LDFLAGS)
#error "_CS_POSIX_V6_LP64_OFF64_LDFLAGS and _CS_POSIX_V7_LP64_OFF64_LDFLAGS flag values not equal"
#endif
#if (_CS_POSIX_V7_LP64_OFF64_LIBS != _CS_POSIX_V7_LP64_OFF64_LIBS)
#error "_CS_POSIX_V6_LP64_OFF64_LIBS and _CS_POSIX_V7_LP64_OFF64_LIBS flag values not equal"
#endif
#if (_CS_V6_ENV != _CS_V7_ENV)
#error "_CS_V6_ENV and _CS_V7_ENV flag values not equal"
#endif
size_t confstr(int name, char *buf, size_t len){
const char *p;
const char UPE[] = "unsupported programming environment";
switch (name) {
case _CS_PATH:
errno = EINVAL;
return (0);
case _CS_POSIX_V7_ILP32_OFF32_CFLAGS:
case _CS_POSIX_V7_ILP32_OFF32_LDFLAGS:
case _CS_POSIX_V7_ILP32_OFF32_LIBS:
case _CS_POSIX_V7_LPBIG_OFFBIG_CFLAGS:
case _CS_POSIX_V7_LPBIG_OFFBIG_LDFLAGS:
case _CS_POSIX_V7_LPBIG_OFFBIG_LIBS:
case _CS_POSIX_V7_ILP32_OFFBIG_CFLAGS:
case _CS_POSIX_V7_ILP32_OFFBIG_LDFLAGS:
case _CS_POSIX_V7_ILP32_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_V7_ENV:
p = UPE;
if (len != 0 && buf != NULL){
strlcpy(buf, p, len);
}
return (strlen(p) + 1);
default:
errno = EINVAL;
return (0);
}
}
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