109 lines
3.3 KiB
C
109 lines
3.3 KiB
C
/*-
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* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
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* Portions Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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static char sccsid[] = "@(#)dl.c 5.4 (Berkeley) 2/23/91";
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#endif /* LIBC_SCCS and not lint */
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#include <sys/types.h>
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#include <nlist.h>
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#include "link.h"
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#include <dlfcn.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "postgres.h"
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#include "dynloader.h"
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static char error_message[BUFSIZ];
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char *
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BSD44_derived_dlerror(void)
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{
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static char ret[BUFSIZ];
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strcpy(ret, error_message);
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error_message[0] = 0;
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return (ret[0] == 0) ? (char *) NULL : ret;
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}
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void *
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BSD44_derived_dlopen(const char *file, int num)
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{
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#if defined(__mips__) || (defined(__NetBSD__) && defined(__vax__))
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sprintf(error_message, "dlopen (%s) not supported", file);
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return NULL;
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#else
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void *vp;
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if ((vp = dlopen((char *) file, num)) == (void *) NULL)
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sprintf(error_message, "dlopen '%s' failed. (%s)", file, dlerror());
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return vp;
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#endif
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}
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void *
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BSD44_derived_dlsym(void *handle, const char *name)
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{
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#if defined(__mips__) || (defined(__NetBSD__) && defined(__vax__))
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sprintf(error_message, "dlsym (%s) failed", name);
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return NULL;
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#else
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void *vp;
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char buf[BUFSIZ];
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#ifndef __ELF__
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if (*name != '_')
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{
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sprintf(buf, "_%s", name);
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name = buf;
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}
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#endif
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if ((vp = dlsym(handle, (char *) name)) == (void *) NULL)
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sprintf(error_message, "dlsym (%s) failed", name);
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return vp;
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#endif
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}
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void
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BSD44_derived_dlclose(void *handle)
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{
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#if defined(__mips__) || (defined(__NetBSD__) && defined(__vax__))
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#else
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dlclose(handle);
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#endif
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}
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