Add in port to DG/UX

Submitted by: "Brian E. Gallew" <geek+@cmu.edu>

src/backend/port/dgux/Makefile.inc

@@ -0,0 +1,25 @@
+#-------------------------------------------------------------------------
+#
+# Makefile.inc--
+#    Makefile for port/linux (Linux specific stuff)
+#
+# Copyright (c) 1994, Regents of the University of California
+#
+#
+# IDENTIFICATION
+#    $Header: /cvsroot/pgsql/src/backend/port/dgux/Attic/Makefile.inc,v 1.1 1996/07/25 20:43:56 scrappy Exp $
+#
+# NOTES
+#    The Linux port is included here by courtesy of Kai Petzke.
+#
+#    (C) 1994, Kai Petzke, wpp@marie.physik.tu-berlin.de
+#
+#-------------------------------------------------------------------------
+
+BIGOBJS= false
+
+CFLAGS+= -DLINUX_ELF
+
+HEADERS+= machine.h port-protos.h
+CFLAGS+= #-DNEED_CBRT
+

src/backend/port/dgux/dynloader.c

@@ -0,0 +1,91 @@
+/*-------------------------------------------------------------------------
+ *
+ * dynloader.c--
+ *    Dynamic Loader for Postgres for DG/UX, generated from those for
+ *    Linux.
+ *
+ * Copyright (c) 1994, Regents of the University of California
+ *
+ *
+ * IDENTIFICATION
+ *    $Header: /cvsroot/pgsql/src/backend/port/dgux/Attic/dynloader.c,v 1.1 1996/07/25 20:43:58 scrappy Exp $
+ *
+ *-------------------------------------------------------------------------
+ */
+#include <stdio.h>
+#include <dld.h>
+#include "postgres.h"
+#include "port-protos.h"
+#include "utils/elog.h"
+#include "fmgr.h"
+
+extern char pg_pathname[];
+
+void *
+pg_dlopen(char *filename)
+{
+    static int dl_initialized= 0;
+
+    /*
+     * initializes the dynamic loader with the executable's pathname.
+     * (only needs to do this the first time pg_dlopen is called.)
+     */
+    if (!dl_initialized) {
+        if (dld_init (dld_find_executable (pg_pathname))) {
+	    return NULL;
+	}
+	/*
+	 * if there are undefined symbols, we want dl to search from the
+	 * following libraries also.
+	 */
+	dl_initialized= 1;
+    }
+
+    /*
+     * link the file, then check for undefined symbols!
+     */
+    if (dld_link(filename)) {
+	return NULL;
+    }
+
+    /*
+     * If undefined symbols: try to link with the C and math libraries!
+     * This could be smarter, if the dynamic linker was able to handle
+     * shared libs!
+     */
+    if(dld_undefined_sym_count > 0) {
+	if (dld_link("/usr/lib/libc.a")) {
+	    elog(NOTICE, "dld: Cannot link C library!");
+	    return NULL;
+	}
+	if(dld_undefined_sym_count > 0) {
+	    if (dld_link("/usr/lib/libm.a")) {
+		elog(NOTICE, "dld: Cannot link math library!");
+		return NULL;
+	    }
+	    if(dld_undefined_sym_count > 0) {
+		int count = dld_undefined_sym_count;
+		char **list= dld_list_undefined_sym();
+
+		/* list the undefined symbols, if any */
+		elog(NOTICE, "dld: Undefined:");
+		do {
+		    elog(NOTICE, "  %s", *list);
+		    list++;
+		    count--;
+		} while(count > 0);
+
+		dld_unlink_by_file(filename, 1);
+		return NULL;
+	    }
+	}
+    }
+
+    return (void *) strdup(filename);
+}
+
+char *
+pg_dlerror()
+{
+    return dld_strerror(dld_errno);
+}

src/backend/port/dgux/machine.h

@@ -0,0 +1,18 @@
+/*-------------------------------------------------------------------------
+ *
+ * machine.h--
+ *    
+ *
+ *
+ * Copyright (c) 1994, Regents of the University of California
+ *
+ * $Id: machine.h,v 1.1 1996/07/25 20:43:59 scrappy Exp $
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef MACHINE_H
+#define MACHINE_H
+
+#define BLCKSZ	8192
+
+#endif

src/backend/port/dgux/port-protos.h

@@ -0,0 +1,30 @@
+/*-------------------------------------------------------------------------
+ *
+ * port-protos.h--
+ *    port-specific prototypes for SunOS 4
+ *
+ *
+ * Copyright (c) 1994, Regents of the University of California
+ *
+ * $Id: port-protos.h,v 1.1 1996/07/25 20:44:00 scrappy Exp $
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PORT_PROTOS_H
+#define PORT_PROTOS_H
+
+#include "fmgr.h"			/* for func_ptr */
+#include "utils/dynamic_loader.h"
+#include "dlfcn.h"
+
+/* dynloader.c */
+
+/* #define	pg_dlopen(f)	dlopen(f, 1) */
+#define	pg_dlopen(f)	dlopen(f, 2)
+#define	pg_dlsym	dlsym
+#define	pg_dlclose	dlclose
+#define	pg_dlerror	dlerror
+
+/* port.c */
+
+#endif /* PORT_PROTOS_H */

src/backend/port/dgux/port.c

@@ -0,0 +1,13 @@
+/*-------------------------------------------------------------------------
+ *
+ * port.c--
+ *    Linux-specific routines
+ *
+ * Copyright (c) 1994, Regents of the University of California
+ *
+ *
+ * IDENTIFICATION
+ *    $Header: /cvsroot/pgsql/src/backend/port/dgux/Attic/port.c,v 1.1 1996/07/25 20:44:00 scrappy Exp $
+ *
+ *-------------------------------------------------------------------------
+ */