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More removal of port dependent stuff
This commit is contained in:
Marc G. Fournier
parent
903e21b451
commit
56a7d9fac2
@ -1,35 +0,0 @@
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#-------------------------------------------------------------------------
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#
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# Makefile--
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# Makefile for port/BSD44_derived
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#
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# IDENTIFICATION
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# $Header: /cvsroot/pgsql/src/backend/port/BSD44_derived/Attic/Makefile,v 1.2 1996/11/09 06:18:40 momjian Exp $
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#
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#-------------------------------------------------------------------------
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SRCDIR = ../../..
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include ../../../Makefile.global
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INCLUDE_OPT = -I../.. \
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-I../../../include
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CFLAGS+=$(INCLUDE_OPT)
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OBJS = dl.o
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all: SUBSYS.o
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SUBSYS.o: $(OBJS)
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$(LD) -r -o SUBSYS.o $(OBJS)
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depend dep:
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$(CC) -MM $(INCLUDE_OPT) *.c >depend
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clean:
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rm -f SUBSYS.o $(OBJS)
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ifeq (depend,$(wildcard depend))
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include depend
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endif
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@ -1,4 +0,0 @@
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The NetBSD port was done by Alistair G. Crooks (agc@uts.amdahl.com).
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It was extended to cover Operating Systems derived from the 4.4-lite
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BSD release by Alistair G. Crooks.
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@ -1,107 +0,0 @@
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/*-
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* 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 "port-protos.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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#ifdef __mips__
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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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{
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sprintf(error_message, "dlopen (%s) failed", file);
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}
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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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#ifdef __mips__
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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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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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if ((vp = dlsym(handle, (char *) name)) == (void *) NULL)
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{
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sprintf(error_message, "dlsym (%s) failed", name);
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}
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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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#ifndef __mips__
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dlclose(handle);
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#endif
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}
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@ -1,48 +0,0 @@
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/*-------------------------------------------------------------------------
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*
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* port-protos.h--
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* port-specific prototypes for NetBSD 1.0
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*
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*
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* Copyright (c) 1994, Regents of the University of California
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*
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* $Id: port-protos.h,v 1.8 1997/09/08 02:25:35 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef PORT_PROTOS_H
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#define PORT_PROTOS_H
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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 "postgres.h"
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#include "fmgr.h" /* for func_ptr */
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#include "utils/dynamic_loader.h"
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/* dynloader.c */
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/*
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* Dynamic Loader on NetBSD 1.0.
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*
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* this dynamic loader uses the system dynamic loading interface for shared
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* libraries (ie. dlopen/dlsym/dlclose). The user must specify a shared
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* library as the file to be dynamically loaded.
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*
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* agc - I know this is all a bit crufty, but it does work, is fairly
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* portable, and works (the stipulation that the d.l. function must
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* begin with an underscore is fairly tricky, and some versions of
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* NetBSD (like 1.0, and 1.0A pre June 1995) have no dlerror.)
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*/
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#define pg_dlopen(f) BSD44_derived_dlopen(f, 1)
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#define pg_dlsym BSD44_derived_dlsym
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#define pg_dlclose BSD44_derived_dlclose
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#define pg_dlerror BSD44_derived_dlerror
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char *BSD44_derived_dlerror(void);
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void *BSD44_derived_dlopen(const char *filename, int num);
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void *BSD44_derived_dlsym(void *handle, const char *name);
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void BSD44_derived_dlclose(void *handle);
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#endif /* PORT_PROTOS_H */
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@ -1,35 +0,0 @@
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#-------------------------------------------------------------------------
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#
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# Makefile--
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# Makefile for port/aix
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#
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# IDENTIFICATION
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# $Header: /cvsroot/pgsql/src/backend/port/aix/Attic/Makefile,v 1.2 1996/11/09 06:18:48 momjian Exp $
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#
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#-------------------------------------------------------------------------
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SRCDIR = ../../..
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include ../../../Makefile.global
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INCLUDE_OPT = -I../.. \
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-I../../../include
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CFLAGS+=$(INCLUDE_OPT)
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OBJS = dlfcn.o
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all: SUBSYS.o
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SUBSYS.o: $(OBJS)
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$(LD) -r -o SUBSYS.o $(OBJS)
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depend dep:
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$(CC) -MM $(INCLUDE_OPT) *.c >depend
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clean:
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rm -f SUBSYS.o $(OBJS)
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ifeq (depend,$(wildcard depend))
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include depend
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endif
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@ -1,167 +0,0 @@
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Copyright (c) 1992,1993,1995, Jens-Uwe Mager, Helios Software GmbH
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Not derived from licensed software.
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Permission is granted to freely use, copy, modify, and redistribute
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this software, provided that no attempt is made to gain profit from it,
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the author is not construed to be liable for any results of using the
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software, alterations are clearly marked as such, and this notice is
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not modified.
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libdl.a
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-------
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This is an emulation library to emulate the SunOS/System V.4 functions
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to access the runtime linker. The functions are emulated by using the
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AIX load() function and by reading the .loader section of the loaded
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module to find the exports. The to be loaded module should be linked as
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follows (if using AIX 3):
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cc -o module.so -bM:SRE -bE:module.exp -e _nostart $(OBJS)
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For AIX 4:
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cc -o module.so -bM:SRE -bE:module.exp -bnoentry $(OBJS)
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The module export file contains the symbols to be exported. Because
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this library uses the loader section, the final module.so file can be
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stripped. C++ users should build their shared objects using the script
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makeC++SharedLib (part of the IBM C++ compiler), this will make sure
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that constructors and destructors for static and global objects will be
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called upon loading and unloading the module.
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Usage
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-----
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void *dlopen(const char *path, int mode);
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This routine loads the module pointed to by path and reads its export
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table. If the path does not contain a '/' character, dlopen will search
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for the module using the LIBPATH environment variable. It returns an
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opaque handle to the module or NULL on error. The mode parameter can be
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either RTLD_LAZY (for lazy function binding) or RTLD_NOW for immediate
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function binding. The AIX implementation currently does treat RTLD_NOW
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the same as RTLD_LAZY. The flag RTLD_GLOBAL might be or'ed into the
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mode parameter to allow loaded modules to bind to global variables or
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functions in other loaded modules loaded by dlopen(). If RTLD_GLOBAL is
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not specified, only globals from the main part of the executable or
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shared libraries are used to look for undefined symbols in loaded
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modules.
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void *dlsym(void *handle, const char *symbol);
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This routine searches for the symbol in the module referred to by
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handle and returns its address. If the symbol could not be found, the
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function returns NULL. The return value must be casted to a proper
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function pointer before it can be used. SunOS/System V.4 allow handle
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to be a NULL pointer to refer to the module the call is made from, this
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is not implemented.
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int dlclose(void *handle);
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This routine unloads the module referred to by the handle and disposes
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of any local storage. this function returns -1 on failure.
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char *dlerror(void);
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This routine can be used to retrieve a text message describing the most
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recent error that occured on on of the above routines. This function
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returns NULL if there is not error information.
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Initialization and termination handlers
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---------------------------------------
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The emulation provides for an initialization and a termination
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handler. The dlfcn.h file contains a structure declaration named
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dl_info with following members:
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void (*init)(void);
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void (*fini)(void);
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The init function is called upon first referencing the library. The
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fini function is called at dlclose() time or when the process exits.
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The module should declare a variable named dl_info that contains this
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structure which must be exported. These functions correspond to the
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documented _init() and _fini() functions of SunOS 4.x, but these are
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appearently not implemented in SunOS. When using SunOS 5.0, these
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correspond to #pragma init and #pragma fini respectively. At the same
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time any static or global C++ object's constructors or destructors will
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be called.
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Jens-Uwe Mager
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HELIOS Software GmbH
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Lavesstr. 80
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30159 Hannover
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Germany
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|
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Phone: +49 511 36482-0
|
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FAX: +49 511 36482-69
|
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AppleLink: helios.de Attn: Jens-Uwe Mager
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Internet: jum@helios.de
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Revison History
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---------------
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SCCS/s.dlfcn.h:
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D 1.4 95/04/25 09:36:52 jum 4 3 00018/00004/00028
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MRs:
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COMMENTS:
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added RTLD_GLOBAL, include and C++ guards
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D 1.3 92/12/27 20:58:32 jum 3 2 00001/00001/00031
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MRs:
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COMMENTS:
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we always have prototypes on RS/6000
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D 1.2 92/08/16 17:45:11 jum 2 1 00009/00000/00023
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MRs:
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COMMENTS:
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added dl_info structure to implement initialize and terminate functions
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D 1.1 92/08/02 18:08:45 jum 1 0 00023/00000/00000
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MRs:
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COMMENTS:
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Erstellungsdatum und -uhrzeit 92/08/02 18:08:45 von jum
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SCCS/s.dlfcn.c:
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D 1.7 95/08/14 19:08:38 jum 8 6 00026/00004/00502
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MRs:
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COMMENTS:
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Integrated the fixes from Kirk Benell (kirk@rsinc.com) to allow loading of
|
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shared objects generated under AIX 4. Fixed bug that symbols with exactly
|
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8 characters would use garbage characters from the following symbol value.
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D 1.6 95/04/25 09:38:03 jum 6 5 00046/00006/00460
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MRs:
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COMMENTS:
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added handling of C++ static constructors and destructors, added RTLD_GLOBAL to bind against other loaded modules
|
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|
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D 1.5 93/02/14 20:14:17 jum 5 4 00002/00000/00464
|
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MRs:
|
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COMMENTS:
|
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added path to dlopen error message to make clear where there error occured.
|
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|
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D 1.4 93/01/03 19:13:56 jum 4 3 00061/00005/00403
|
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MRs:
|
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COMMENTS:
|
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to allow calling symbols in the main module call load with L_NOAUTODEFER and
|
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do a loadbind later with the main module.
|
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|
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D 1.3 92/12/27 20:59:55 jum 3 2 00066/00008/00342
|
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MRs:
|
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COMMENTS:
|
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added search by L_GETINFO if module got loaded by LIBPATH
|
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|
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D 1.2 92/08/16 17:45:43 jum 2 1 00074/00006/00276
|
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MRs:
|
||||
COMMENTS:
|
||||
implemented initialize and terminate functions, added reference counting to avoid multiple loads of the same library
|
||||
|
||||
D 1.1 92/08/02 18:08:45 jum 1 0 00282/00000/00000
|
||||
MRs:
|
||||
COMMENTS:
|
||||
Erstellungsdatum und -uhrzeit 92/08/02 18:08:45 von jum
|
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|
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@ -1,603 +0,0 @@
|
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/*
|
||||
* @(#)dlfcn.c 1.7 revision of 95/08/14 19:08:38
|
||||
* This is an unpublished work copyright (c) 1992 HELIOS Software GmbH
|
||||
* 30159 Hannover, Germany
|
||||
*/
|
||||
|
||||
#include <stdio.h>
|
||||
#include <errno.h>
|
||||
#include <string.h>
|
||||
#include <stdlib.h>
|
||||
#include <sys/types.h>
|
||||
#include <sys/ldr.h>
|
||||
#include <a.out.h>
|
||||
#include <ldfcn.h>
|
||||
#include "dlfcn.h"
|
||||
#include "c.h"
|
||||
|
||||
/*
|
||||
* We simulate dlopen() et al. through a call to load. Because AIX has
|
||||
* no call to find an exported symbol we read the loader section of the
|
||||
* loaded module and build a list of exported symbols and their virtual
|
||||
* address.
|
||||
*/
|
||||
|
||||
typedef struct
|
||||
{
|
||||
char *name; /* the symbols's name */
|
||||
void *addr; /* its relocated virtual address */
|
||||
} Export, *ExportPtr;
|
||||
|
||||
/*
|
||||
* xlC uses the following structure to list its constructors and
|
||||
* destructors. This is gleaned from the output of munch.
|
||||
*/
|
||||
typedef struct
|
||||
{
|
||||
void (*init) (void); /* call static constructors */
|
||||
void (*term) (void); /* call static destructors */
|
||||
} Cdtor, *CdtorPtr;
|
||||
|
||||
/*
|
||||
* The void * handle returned from dlopen is actually a ModulePtr.
|
||||
*/
|
||||
typedef struct Module
|
||||
{
|
||||
struct Module *next;
|
||||
char *name; /* module name for refcounting */
|
||||
int refCnt; /* the number of references */
|
||||
void *entry; /* entry point from load */
|
||||
struct dl_info *info; /* optional init/terminate functions */
|
||||
CdtorPtr cdtors; /* optional C++ constructors */
|
||||
int nExports; /* the number of exports found */
|
||||
ExportPtr exports; /* the array of exports */
|
||||
} Module, *ModulePtr;
|
||||
|
||||
/*
|
||||
* We keep a list of all loaded modules to be able to call the fini
|
||||
* handlers and destructors at atexit() time.
|
||||
*/
|
||||
static ModulePtr modList;
|
||||
|
||||
/*
|
||||
* The last error from one of the dl* routines is kept in static
|
||||
* variables here. Each error is returned only once to the caller.
|
||||
*/
|
||||
static char errbuf[BUFSIZ];
|
||||
static int errvalid;
|
||||
|
||||
extern char *strdup(const char *);
|
||||
static void caterr(char *);
|
||||
static int readExports(ModulePtr);
|
||||
static void terminate(void);
|
||||
static void *findMain(void);
|
||||
|
||||
void *
|
||||
dlopen(const char *path, int mode)
|
||||
{
|
||||
register ModulePtr mp;
|
||||
static void *mainModule;
|
||||
|
||||
/*
|
||||
* Upon the first call register a terminate handler that will close
|
||||
* all libraries. Also get a reference to the main module for use with
|
||||
* loadbind.
|
||||
*/
|
||||
if (!mainModule)
|
||||
{
|
||||
if ((mainModule = findMain()) == NULL)
|
||||
return NULL;
|
||||
atexit(terminate);
|
||||
}
|
||||
|
||||
/*
|
||||
* Scan the list of modules if we have the module already loaded.
|
||||
*/
|
||||
for (mp = modList; mp; mp = mp->next)
|
||||
if (strcmp(mp->name, path) == 0)
|
||||
{
|
||||
mp->refCnt++;
|
||||
return mp;
|
||||
}
|
||||
if ((mp = (ModulePtr) calloc(1, sizeof(*mp))) == NULL)
|
||||
{
|
||||
errvalid++;
|
||||
strcpy(errbuf, "calloc: ");
|
||||
strcat(errbuf, strerror(errno));
|
||||
return NULL;
|
||||
}
|
||||
if ((mp->name = strdup(path)) == NULL)
|
||||
{
|
||||
errvalid++;
|
||||
strcpy(errbuf, "strdup: ");
|
||||
strcat(errbuf, strerror(errno));
|
||||
free(mp);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/*
|
||||
* load should be declared load(const char *...). Thus we cast the
|
||||
* path to a normal char *. Ugly.
|
||||
*/
|
||||
if ((mp->entry = (void *) load((char *) path, L_NOAUTODEFER, NULL)) == NULL)
|
||||
{
|
||||
free(mp->name);
|
||||
free(mp);
|
||||
errvalid++;
|
||||
strcpy(errbuf, "dlopen: ");
|
||||
strcat(errbuf, path);
|
||||
strcat(errbuf, ": ");
|
||||
|
||||
/*
|
||||
* If AIX says the file is not executable, the error can be
|
||||
* further described by querying the loader about the last error.
|
||||
*/
|
||||
if (errno == ENOEXEC)
|
||||
{
|
||||
char *tmp[BUFSIZ / sizeof(char *)];
|
||||
|
||||
if (loadquery(L_GETMESSAGES, tmp, sizeof(tmp)) == -1)
|
||||
strcpy(errbuf, strerror(errno));
|
||||
else
|
||||
{
|
||||
char **p;
|
||||
|
||||
for (p = tmp; *p; p++)
|
||||
caterr(*p);
|
||||
}
|
||||
}
|
||||
else
|
||||
strcat(errbuf, strerror(errno));
|
||||
return NULL;
|
||||
}
|
||||
mp->refCnt = 1;
|
||||
mp->next = modList;
|
||||
modList = mp;
|
||||
if (loadbind(0, mainModule, mp->entry) == -1)
|
||||
{
|
||||
dlclose(mp);
|
||||
errvalid++;
|
||||
strcpy(errbuf, "loadbind: ");
|
||||
strcat(errbuf, strerror(errno));
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/*
|
||||
* If the user wants global binding, loadbind against all other loaded
|
||||
* modules.
|
||||
*/
|
||||
if (mode & RTLD_GLOBAL)
|
||||
{
|
||||
register ModulePtr mp1;
|
||||
|
||||
for (mp1 = mp->next; mp1; mp1 = mp1->next)
|
||||
if (loadbind(0, mp1->entry, mp->entry) == -1)
|
||||
{
|
||||
dlclose(mp);
|
||||
errvalid++;
|
||||
strcpy(errbuf, "loadbind: ");
|
||||
strcat(errbuf, strerror(errno));
|
||||
return NULL;
|
||||
}
|
||||
}
|
||||
if (readExports(mp) == -1)
|
||||
{
|
||||
dlclose(mp);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/*
|
||||
* If there is a dl_info structure, call the init function.
|
||||
*/
|
||||
if (mp->info = (struct dl_info *) dlsym(mp, "dl_info"))
|
||||
{
|
||||
if (mp->info->init)
|
||||
(*mp->info->init) ();
|
||||
}
|
||||
else
|
||||
errvalid = 0;
|
||||
|
||||
/*
|
||||
* If the shared object was compiled using xlC we will need to call
|
||||
* static constructors (and later on dlclose destructors).
|
||||
*/
|
||||
if (mp->cdtors = (CdtorPtr) dlsym(mp, "__cdtors"))
|
||||
{
|
||||
while (mp->cdtors->init)
|
||||
{
|
||||
(*mp->cdtors->init) ();
|
||||
mp->cdtors++;
|
||||
}
|
||||
}
|
||||
else
|
||||
errvalid = 0;
|
||||
return mp;
|
||||
}
|
||||
|
||||
/*
|
||||
* Attempt to decipher an AIX loader error message and append it
|
||||
* to our static error message buffer.
|
||||
*/
|
||||
static void
|
||||
caterr(char *s)
|
||||
{
|
||||
register char *p = s;
|
||||
|
||||
while (*p >= '0' && *p <= '9')
|
||||
p++;
|
||||
switch (atoi(s))
|
||||
{
|
||||
case L_ERROR_TOOMANY:
|
||||
strcat(errbuf, "to many errors");
|
||||
break;
|
||||
case L_ERROR_NOLIB:
|
||||
strcat(errbuf, "can't load library");
|
||||
strcat(errbuf, p);
|
||||
break;
|
||||
case L_ERROR_UNDEF:
|
||||
strcat(errbuf, "can't find symbol");
|
||||
strcat(errbuf, p);
|
||||
break;
|
||||
case L_ERROR_RLDBAD:
|
||||
strcat(errbuf, "bad RLD");
|
||||
strcat(errbuf, p);
|
||||
break;
|
||||
case L_ERROR_FORMAT:
|
||||
strcat(errbuf, "bad exec format in");
|
||||
strcat(errbuf, p);
|
||||
break;
|
||||
case L_ERROR_ERRNO:
|
||||
strcat(errbuf, strerror(atoi(++p)));
|
||||
break;
|
||||
default:
|
||||
strcat(errbuf, s);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
void *
|
||||
dlsym(void *handle, const char *symbol)
|
||||
{
|
||||
register ModulePtr mp = (ModulePtr) handle;
|
||||
register ExportPtr ep;
|
||||
register int i;
|
||||
|
||||
/*
|
||||
* Could speed up the search, but I assume that one assigns the result
|
||||
* to function pointers anyways.
|
||||
*/
|
||||
for (ep = mp->exports, i = mp->nExports; i; i--, ep++)
|
||||
if (strcmp(ep->name, symbol) == 0)
|
||||
return ep->addr;
|
||||
errvalid++;
|
||||
strcpy(errbuf, "dlsym: undefined symbol ");
|
||||
strcat(errbuf, symbol);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
char *
|
||||
dlerror(void)
|
||||
{
|
||||
if (errvalid)
|
||||
{
|
||||
errvalid = 0;
|
||||
return errbuf;
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
int
|
||||
dlclose(void *handle)
|
||||
{
|
||||
register ModulePtr mp = (ModulePtr) handle;
|
||||
int result;
|
||||
register ModulePtr mp1;
|
||||
|
||||
if (--mp->refCnt > 0)
|
||||
return 0;
|
||||
if (mp->info && mp->info->fini)
|
||||
(*mp->info->fini) ();
|
||||
if (mp->cdtors)
|
||||
while (mp->cdtors->term)
|
||||
{
|
||||
(*mp->cdtors->term) ();
|
||||
mp->cdtors++;
|
||||
}
|
||||
result = unload(mp->entry);
|
||||
if (result == -1)
|
||||
{
|
||||
errvalid++;
|
||||
strcpy(errbuf, strerror(errno));
|
||||
}
|
||||
if (mp->exports)
|
||||
{
|
||||
register ExportPtr ep;
|
||||
register int i;
|
||||
|
||||
for (ep = mp->exports, i = mp->nExports; i; i--, ep++)
|
||||
if (ep->name)
|
||||
free(ep->name);
|
||||
free(mp->exports);
|
||||
}
|
||||
if (mp == modList)
|
||||
modList = mp->next;
|
||||
else
|
||||
{
|
||||
for (mp1 = modList; mp1; mp1 = mp1->next)
|
||||
if (mp1->next == mp)
|
||||
{
|
||||
mp1->next = mp->next;
|
||||
break;
|
||||
}
|
||||
}
|
||||
free(mp->name);
|
||||
free(mp);
|
||||
return result;
|
||||
}
|
||||
|
||||
static void
|
||||
terminate(void)
|
||||
{
|
||||
while (modList)
|
||||
dlclose(modList);
|
||||
}
|
||||
|
||||
/*
|
||||
* Build the export table from the XCOFF .loader section.
|
||||
*/
|
||||
static int
|
||||
readExports(ModulePtr mp)
|
||||
{
|
||||
LDFILE *ldp = NULL;
|
||||
SCNHDR sh,
|
||||
shdata;
|
||||
LDHDR *lhp;
|
||||
char *ldbuf;
|
||||
LDSYM *ls;
|
||||
int i;
|
||||
ExportPtr ep;
|
||||
|
||||
if ((ldp = ldopen(mp->name, ldp)) == NULL)
|
||||
{
|
||||
struct ld_info *lp;
|
||||
char *buf;
|
||||
int size = 4 * 1024;
|
||||
|
||||
if (errno != ENOENT)
|
||||
{
|
||||
errvalid++;
|
||||
strcpy(errbuf, "readExports: ");
|
||||
strcat(errbuf, strerror(errno));
|
||||
return -1;
|
||||
}
|
||||
|
||||
/*
|
||||
* The module might be loaded due to the LIBPATH environment
|
||||
* variable. Search for the loaded module using L_GETINFO.
|
||||
*/
|
||||
if ((buf = malloc(size)) == NULL)
|
||||
{
|
||||
errvalid++;
|
||||
strcpy(errbuf, "readExports: ");
|
||||
strcat(errbuf, strerror(errno));
|
||||
return -1;
|
||||
}
|
||||
while ((i = loadquery(L_GETINFO, buf, size)) == -1 && errno == ENOMEM)
|
||||
{
|
||||
free(buf);
|
||||
size += 4 * 1024;
|
||||
if ((buf = malloc(size)) == NULL)
|
||||
{
|
||||
errvalid++;
|
||||
strcpy(errbuf, "readExports: ");
|
||||
strcat(errbuf, strerror(errno));
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
if (i == -1)
|
||||
{
|
||||
errvalid++;
|
||||
strcpy(errbuf, "readExports: ");
|
||||
strcat(errbuf, strerror(errno));
|
||||
free(buf);
|
||||
return -1;
|
||||
}
|
||||
|
||||
/*
|
||||
* Traverse the list of loaded modules. The entry point returned
|
||||
* by load() does actually point to the data segment origin.
|
||||
*/
|
||||
lp = (struct ld_info *) buf;
|
||||
while (lp)
|
||||
{
|
||||
if (lp->ldinfo_dataorg == mp->entry)
|
||||
{
|
||||
ldp = ldopen(lp->ldinfo_filename, ldp);
|
||||
break;
|
||||
}
|
||||
if (lp->ldinfo_next == 0)
|
||||
lp = NULL;
|
||||
else
|
||||
lp = (struct ld_info *) ((char *) lp + lp->ldinfo_next);
|
||||
}
|
||||
free(buf);
|
||||
if (!ldp)
|
||||
{
|
||||
errvalid++;
|
||||
strcpy(errbuf, "readExports: ");
|
||||
strcat(errbuf, strerror(errno));
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
if (TYPE(ldp) != U802TOCMAGIC)
|
||||
{
|
||||
errvalid++;
|
||||
strcpy(errbuf, "readExports: bad magic");
|
||||
while (ldclose(ldp) == FAILURE)
|
||||
;
|
||||
return -1;
|
||||
}
|
||||
|
||||
/*
|
||||
* Get the padding for the data section. This is needed for AIX 4.1
|
||||
* compilers. This is used when building the final function pointer to
|
||||
* the exported symbol.
|
||||
*/
|
||||
if (ldnshread(ldp, _DATA, &shdata) != SUCCESS)
|
||||
{
|
||||
errvalid++;
|
||||
strcpy(errbuf, "readExports: cannot read data section header");
|
||||
while (ldclose(ldp) == FAILURE)
|
||||
;
|
||||
return -1;
|
||||
}
|
||||
if (ldnshread(ldp, _LOADER, &sh) != SUCCESS)
|
||||
{
|
||||
errvalid++;
|
||||
strcpy(errbuf, "readExports: cannot read loader section header");
|
||||
while (ldclose(ldp) == FAILURE)
|
||||
;
|
||||
return -1;
|
||||
}
|
||||
|
||||
/*
|
||||
* We read the complete loader section in one chunk, this makes
|
||||
* finding long symbol names residing in the string table easier.
|
||||
*/
|
||||
if ((ldbuf = (char *) malloc(sh.s_size)) == NULL)
|
||||
{
|
||||
errvalid++;
|
||||
strcpy(errbuf, "readExports: ");
|
||||
strcat(errbuf, strerror(errno));
|
||||
while (ldclose(ldp) == FAILURE)
|
||||
;
|
||||
return -1;
|
||||
}
|
||||
if (FSEEK(ldp, sh.s_scnptr, BEGINNING) != OKFSEEK)
|
||||
{
|
||||
errvalid++;
|
||||
strcpy(errbuf, "readExports: cannot seek to loader section");
|
||||
free(ldbuf);
|
||||
while (ldclose(ldp) == FAILURE)
|
||||
;
|
||||
return -1;
|
||||
}
|
||||
if (FREAD(ldbuf, sh.s_size, 1, ldp) != 1)
|
||||
{
|
||||
errvalid++;
|
||||
strcpy(errbuf, "readExports: cannot read loader section");
|
||||
free(ldbuf);
|
||||
while (ldclose(ldp) == FAILURE)
|
||||
;
|
||||
return -1;
|
||||
}
|
||||
lhp = (LDHDR *) ldbuf;
|
||||
ls = (LDSYM *) (ldbuf + LDHDRSZ);
|
||||
|
||||
/*
|
||||
* Count the number of exports to include in our export table.
|
||||
*/
|
||||
for (i = lhp->l_nsyms; i; i--, ls++)
|
||||
{
|
||||
if (!LDR_EXPORT(*ls))
|
||||
continue;
|
||||
mp->nExports++;
|
||||
}
|
||||
if ((mp->exports = (ExportPtr) calloc(mp->nExports, sizeof(*mp->exports))) == NULL)
|
||||
{
|
||||
errvalid++;
|
||||
strcpy(errbuf, "readExports: ");
|
||||
strcat(errbuf, strerror(errno));
|
||||
free(ldbuf);
|
||||
while (ldclose(ldp) == FAILURE)
|
||||
;
|
||||
return -1;
|
||||
}
|
||||
|
||||
/*
|
||||
* Fill in the export table. All entries are relative to the entry
|
||||
* point we got from load.
|
||||
*/
|
||||
ep = mp->exports;
|
||||
ls = (LDSYM *) (ldbuf + LDHDRSZ);
|
||||
for (i = lhp->l_nsyms; i; i--, ls++)
|
||||
{
|
||||
char *symname;
|
||||
char tmpsym[SYMNMLEN + 1];
|
||||
|
||||
if (!LDR_EXPORT(*ls))
|
||||
continue;
|
||||
if (ls->l_zeroes == 0)
|
||||
symname = ls->l_offset + lhp->l_stoff + ldbuf;
|
||||
else
|
||||
{
|
||||
|
||||
/*
|
||||
* The l_name member is not zero terminated, we must copy the
|
||||
* first SYMNMLEN chars and make sure we have a zero byte at
|
||||
* the end.
|
||||
*/
|
||||
StrNCpy(tmpsym, ls->l_name, SYMNMLEN+1);
|
||||
symname = tmpsym;
|
||||
}
|
||||
ep->name = strdup(symname);
|
||||
ep->addr = (void *) ((unsigned long) mp->entry +
|
||||
ls->l_value - shdata.s_vaddr);
|
||||
ep++;
|
||||
}
|
||||
free(ldbuf);
|
||||
while (ldclose(ldp) == FAILURE)
|
||||
;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Find the main modules entry point. This is used as export pointer
|
||||
* for loadbind() to be able to resolve references to the main part.
|
||||
*/
|
||||
static void *
|
||||
findMain(void)
|
||||
{
|
||||
struct ld_info *lp;
|
||||
char *buf;
|
||||
int size = 4 * 1024;
|
||||
int i;
|
||||
void *ret;
|
||||
|
||||
if ((buf = malloc(size)) == NULL)
|
||||
{
|
||||
errvalid++;
|
||||
strcpy(errbuf, "findMain: ");
|
||||
strcat(errbuf, strerror(errno));
|
||||
return NULL;
|
||||
}
|
||||
while ((i = loadquery(L_GETINFO, buf, size)) == -1 && errno == ENOMEM)
|
||||
{
|
||||
free(buf);
|
||||
size += 4 * 1024;
|
||||
if ((buf = malloc(size)) == NULL)
|
||||
{
|
||||
errvalid++;
|
||||
strcpy(errbuf, "findMain: ");
|
||||
strcat(errbuf, strerror(errno));
|
||||
return NULL;
|
||||
}
|
||||
}
|
||||
if (i == -1)
|
||||
{
|
||||
errvalid++;
|
||||
strcpy(errbuf, "findMain: ");
|
||||
strcat(errbuf, strerror(errno));
|
||||
free(buf);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/*
|
||||
* The first entry is the main module. The entry point returned by
|
||||
* load() does actually point to the data segment origin.
|
||||
*/
|
||||
lp = (struct ld_info *) buf;
|
||||
ret = lp->ldinfo_dataorg;
|
||||
free(buf);
|
||||
return ret;
|
||||
}
|
||||
@ -1,49 +0,0 @@
|
||||
/*
|
||||
* @(#)dlfcn.h 1.4 revision of 95/04/25 09:36:52
|
||||
* This is an unpublished work copyright (c) 1992 HELIOS Software GmbH
|
||||
* 30159 Hannover, Germany
|
||||
*/
|
||||
|
||||
#ifndef __dlfcn_h__
|
||||
#define __dlfcn_h__
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C"
|
||||
{
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Mode flags for the dlopen routine.
|
||||
*/
|
||||
#define RTLD_LAZY 1 /* lazy function call binding */
|
||||
#define RTLD_NOW 2 /* immediate function call binding */
|
||||
#define RTLD_GLOBAL 0x100 /* allow symbols to be global */
|
||||
|
||||
/*
|
||||
* To be able to intialize, a library may provide a dl_info structure
|
||||
* that contains functions to be called to initialize and terminate.
|
||||
*/
|
||||
struct dl_info
|
||||
{
|
||||
void (*init) (void);
|
||||
void (*fini) (void);
|
||||
};
|
||||
|
||||
#if __STDC__ || defined(_IBMR2)
|
||||
void *dlopen(const char *path, int mode);
|
||||
void *dlsym(void *handle, const char *symbol);
|
||||
char *dlerror(void);
|
||||
int dlclose(void *handle);
|
||||
#else
|
||||
void *dlopen();
|
||||
void *dlsym();
|
||||
char *dlerror();
|
||||
int dlclose();
|
||||
#endif
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
#endif /* __dlfcn_h__ */
|
||||
@ -1,25 +0,0 @@
|
||||
/*-------------------------------------------------------------------------
|
||||
*
|
||||
* port-protos.h--
|
||||
* port-specific prototypes for AIX
|
||||
*
|
||||
*
|
||||
* Copyright (c) 1994, Regents of the University of California
|
||||
*
|
||||
* $Id: port-protos.h,v 1.2 1997/09/07 04:45:16 momjian Exp $
|
||||
*
|
||||
*-------------------------------------------------------------------------
|
||||
*/
|
||||
#ifndef PORT_PROTOS_H
|
||||
#define PORT_PROTOS_H
|
||||
|
||||
#include "dlfcn.h" /* this is from jum's libdl package */
|
||||
|
||||
/* dynloader.c */
|
||||
|
||||
#define pg_dlopen(f) dlopen(filename, RTLD_LAZY)
|
||||
#define pg_dlsym(h,f) dlsym(h, f)
|
||||
#define pg_dlclose(h) dlclose(h)
|
||||
#define pg_dlerror() dlerror()
|
||||
|
||||
#endif /* PORT_PROTOS_H */
|
||||
Loading…
Reference in New Issue
Block a user