furnace/extern/macports-legacy-support/src/macports_legacy_realpath.c
tildearrow 8b43d5a488 use macports-legacy-support for OS X
disabled for macOS onwards
modified version without APSL licensed files
2024-04-09 13:10:06 -05:00

55 lines
1.9 KiB
C

/*
* Copyright (c) 2019
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* MP support header */
#include "MacportsLegacySupport.h"
/* realpath wrap */
#if __MP_LEGACY_SUPPORT_REALPATH_WRAP__
#include <limits.h>
#include <stdlib.h>
#include <dlfcn.h>
char *realpath(const char * __restrict stringsearch, char * __restrict buffer)
{
char *(*real_realpath)(const char * __restrict, char * __restrict);
#if (__DARWIN_UNIX03 && !defined(_POSIX_C_SOURCE)) || defined(_DARWIN_C_SOURCE) || defined(_DARWIN_BETTER_REALPATH)
real_realpath = dlsym(RTLD_NEXT, "realpath$DARWIN_EXTSN");
# else
real_realpath = dlsym(RTLD_NEXT, "realpath");
#endif
if (real_realpath == NULL) {
exit(EXIT_FAILURE);
}
if (buffer == NULL) {
char *myrealpathbuf = malloc(PATH_MAX);
if (myrealpathbuf != NULL) {
return(real_realpath(stringsearch, myrealpathbuf));
} else {
return(NULL);
}
} else {
return(real_realpath(stringsearch, buffer));
}
}
/* compatibility function so code does not have to be recompiled */
char *macports_legacy_realpath(const char * __restrict stringsearch, char * __restrict buffer) { return realpath(stringsearch, buffer); }
#endif /*__MP_LEGACY_SUPPORT_REALPATH_WRAP__*/