2 * Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
3 * Portions Copyright (c) 1990 The Regents of the University of California.
6 * $PostgreSQL: pgsql/src/backend/port/dynloader/netbsd.c,v 1.23 2008/03/05 19:42:11 alvherre Exp $
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 #if defined(LIBC_SCCS) && !defined(lint)
34 static char sccsid[] = "@(#)dl.c 5.4 (Berkeley) 2/23/91";
35 #endif /* LIBC_SCCS and not lint */
43 #include "dynloader.h"
45 static char error_message[BUFSIZ];
48 BSD44_derived_dlerror(void)
50 static char ret[BUFSIZ];
52 strcpy(ret, error_message);
54 return (ret[0] == 0) ? NULL : ret;
58 BSD44_derived_dlopen(const char *file, int num)
60 #if !defined(HAVE_DLOPEN)
61 snprintf(error_message, sizeof(error_message),
62 "dlopen (%s) not supported", file);
67 if ((vp = dlopen((char *) file, num)) == NULL)
68 snprintf(error_message, sizeof(error_message),
69 "dlopen (%s) failed: %s", file, dlerror());
75 BSD44_derived_dlsym(void *handle, const char *name)
77 #if !defined(HAVE_DLOPEN)
78 snprintf(error_message, sizeof(error_message),
79 "dlsym (%s) failed", name);
81 #elif defined(__ELF__)
82 return dlsym(handle, name);
89 snprintf(buf, sizeof(buf), "_%s", name);
92 if ((vp = dlsym(handle, (char *) name)) == NULL)
93 snprintf(error_message, sizeof(error_message),
94 "dlsym (%s) failed", name);
100 BSD44_derived_dlclose(void *handle)
102 #if !defined(HAVE_DLOPEN)