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Remove obsolete darwin dynloader code

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not needed since macOS 10.3 (2003)
This commit is contained in:
Peter Eisentraut
2018-07-10 15:48:24 +02:00
parent 3ebdd21b79
commit b5d29299cc
1 changed files with 0 additions and 103 deletions
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103
src/backend/port/dynloader/darwin.c
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@ -1,24 +1,15 @@
/* /*
* Dynamic loading support for macOS (Darwin) * Dynamic loading support for macOS (Darwin)
* *
* If dlopen() is available (Darwin 10.3 and later), we just use it.
* Otherwise we emulate it with the older, now deprecated, NSLinkModule API.
*
* src/backend/port/dynloader/darwin.c * src/backend/port/dynloader/darwin.c
*/ */
#include "postgres.h" #include "postgres.h"
#ifdef HAVE_DLOPEN
#include <dlfcn.h> #include <dlfcn.h>
#else
#include <mach-o/dyld.h>
#endif
#include "dynloader.h" #include "dynloader.h"
#ifdef HAVE_DLOPEN
void * void *
pg_dlopen(const char *filename) pg_dlopen(const char *filename)
{ {
@ -34,7 +25,6 @@ pg_dlclose(void *handle)
PGFunction PGFunction
pg_dlsym(void *handle, const char *funcname) pg_dlsym(void *handle, const char *funcname)
{ {
/* Do not prepend an underscore: see dlopen(3) */
return dlsym(handle, funcname); return dlsym(handle, funcname);
} }
@ -43,96 +33,3 @@ pg_dlerror(void)
{ {
return dlerror(); return dlerror();
} }
#else /* !HAVE_DLOPEN */
/*
* These routines were taken from the Apache source, but were made
* available with a PostgreSQL-compatible license. Kudos Wilfredo
* Sánchez <wsanchez@apple.com>.
*/
static NSObjectFileImageReturnCode cofiff_result = NSObjectFileImageFailure;
void *
pg_dlopen(const char *filename)
{
NSObjectFileImage image;
cofiff_result = NSCreateObjectFileImageFromFile(filename, &image);
if (cofiff_result != NSObjectFileImageSuccess)
return NULL;
return NSLinkModule(image, filename,
NSLINKMODULE_OPTION_BINDNOW |
NSLINKMODULE_OPTION_RETURN_ON_ERROR);
}
void
pg_dlclose(void *handle)
{
NSUnLinkModule(handle, NSUNLINKMODULE_OPTION_NONE);
}
PGFunction
pg_dlsym(void *handle, const char *funcname)
{
NSSymbol symbol;
char *symname = (char *) malloc(strlen(funcname) + 2);
if (!symname)
return NULL;
sprintf(symname, "_%s", funcname);
if (NSIsSymbolNameDefined(symname))
{
symbol = NSLookupAndBindSymbol(symname);
free(symname);
return (PGFunction) NSAddressOfSymbol(symbol);
}
else
{
free(symname);
return NULL;
}
}
char *
pg_dlerror(void)
{
NSLinkEditErrors c;
int errorNumber;
const char *fileName;
const char *errorString = NULL;
switch (cofiff_result)
{
case NSObjectFileImageSuccess:
/* must have failed in NSLinkModule */
NSLinkEditError(&c, &errorNumber, &fileName, &errorString);
if (errorString == NULL || *errorString == '\0')
errorString = "unknown link-edit failure";
break;
case NSObjectFileImageFailure:
errorString = "failed to open object file";
break;
case NSObjectFileImageInappropriateFile:
errorString = "inappropriate object file";
break;
case NSObjectFileImageArch:
errorString = "object file is for wrong architecture";
break;
case NSObjectFileImageFormat:
errorString = "object file has wrong format";
break;
case NSObjectFileImageAccess:
errorString = "insufficient permissions for object file";
break;
default:
errorString = "unknown failure to open object file";
break;
}
return (char *) errorString;
}
#endif /* HAVE_DLOPEN */