| /* $PostgreSQL: pgsql/src/backend/port/dynloader/freebsd.c,v 1.25 2006/03/11 04:38:31 momjian Exp $ */ |
| |
| /* |
| * Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group |
| * Portions Copyright (c) 1990 The Regents of the University of California. |
| * All rights reserved. |
| * |
| * 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. |
| * 3. BSD Advertising Clause omitted per the July 22, 1999 licensing change |
| * ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change |
| * 4. Neither the name of the University nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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. |
| */ |
| |
| #if defined(LIBC_SCCS) && !defined(lint) |
| static char sccsid[] = "@(#)dl.c 5.4 (Berkeley) 2/23/91"; |
| #endif /* LIBC_SCCS and not lint */ |
| |
| #include "postgres.h" |
| |
| #include <nlist.h> |
| #include <link.h> |
| #include <dlfcn.h> |
| |
| #include "dynloader.h" |
| |
| static char error_message[BUFSIZ]; |
| |
| char * |
| BSD44_derived_dlerror(void) |
| { |
| static char ret[BUFSIZ]; |
| |
| strcpy(ret, error_message); |
| error_message[0] = 0; |
| return (ret[0] == 0) ? NULL : ret; |
| } |
| |
| void * |
| BSD44_derived_dlopen(const char *file, int num) |
| { |
| #if defined(__mips__) |
| snprintf(error_message, sizeof(error_message), |
| "dlopen (%s) not supported", file); |
| return NULL; |
| #else |
| void *vp; |
| |
| if ((vp = dlopen((char *) file, num)) == NULL) |
| snprintf(error_message, sizeof(error_message), |
| "dlopen (%s) failed: %s", file, dlerror()); |
| return vp; |
| #endif |
| } |
| |
| void * |
| BSD44_derived_dlsym(void *handle, const char *name) |
| { |
| #if defined(__mips__) |
| snprintf(error_message, sizeof(error_message), |
| "dlsym (%s) failed", name); |
| return NULL; |
| #else |
| void *vp; |
| |
| #ifndef __ELF__ |
| char buf[BUFSIZ]; |
| |
| if (*name != '_') |
| { |
| snprintf(buf, sizeof(buf), "_%s", name); |
| name = buf; |
| } |
| #endif |
| if ((vp = dlsym(handle, (char *) name)) == NULL) |
| snprintf(error_message, sizeof(error_message), |
| "dlsym (%s) failed", name); |
| return vp; |
| #endif |
| } |
| |
| void |
| BSD44_derived_dlclose(void *handle) |
| { |
| #if defined(__mips__) |
| #else |
| dlclose(handle); |
| #endif |
| } |