xref: /onnv-gate/usr/src/lib/libbc/libc/gen/common/mblib.c (revision 722:636b850d4ee9)
10Sstevel@tonic-gate /*
20Sstevel@tonic-gate  * CDDL HEADER START
30Sstevel@tonic-gate  *
40Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
50Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
60Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
70Sstevel@tonic-gate  * with the License.
80Sstevel@tonic-gate  *
90Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
100Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
110Sstevel@tonic-gate  * See the License for the specific language governing permissions
120Sstevel@tonic-gate  * and limitations under the License.
130Sstevel@tonic-gate  *
140Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
150Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
160Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
170Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
180Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
190Sstevel@tonic-gate  *
200Sstevel@tonic-gate  * CDDL HEADER END
210Sstevel@tonic-gate  */
220Sstevel@tonic-gate /*
230Sstevel@tonic-gate  * Copyright 1990 Sun Microsystems, Inc.  All rights reserved.
240Sstevel@tonic-gate  * Use is subject to license terms.
250Sstevel@tonic-gate  */
260Sstevel@tonic-gate 
27*722Smuffin #pragma ident	"%Z%%M%	%I%	%E% SMI"
28*722Smuffin 
290Sstevel@tonic-gate /*
300Sstevel@tonic-gate  * misc routines
310Sstevel@tonic-gate  */
320Sstevel@tonic-gate 
330Sstevel@tonic-gate #include <stdio.h>
340Sstevel@tonic-gate #include <sys/types.h>
350Sstevel@tonic-gate #include "codeset.h"
360Sstevel@tonic-gate #include "mbextern.h"
370Sstevel@tonic-gate #include <dlfcn.h>
380Sstevel@tonic-gate 
39*722Smuffin static void *handle = (void *)NULL;	/* initialize it with NULL */
400Sstevel@tonic-gate 
410Sstevel@tonic-gate /*
420Sstevel@tonic-gate  * Close current library library
430Sstevel@tonic-gate  */
44*722Smuffin int
_ml_close_library(void)45*722Smuffin _ml_close_library(void)
460Sstevel@tonic-gate {
470Sstevel@tonic-gate 	if (handle == (void *)NULL) {
480Sstevel@tonic-gate 		_code_set_info.open_flag = NULL;
49*722Smuffin 		return (-1);
500Sstevel@tonic-gate 	}
510Sstevel@tonic-gate 
520Sstevel@tonic-gate 	dlclose(handle);
530Sstevel@tonic-gate 	_code_set_info.open_flag = NULL;
540Sstevel@tonic-gate 	handle = (void *)NULL;
55*722Smuffin 	return (0);
560Sstevel@tonic-gate }
570Sstevel@tonic-gate 
580Sstevel@tonic-gate /*
590Sstevel@tonic-gate  * Open the given library
600Sstevel@tonic-gate  */
610Sstevel@tonic-gate void *
_ml_open_library(void)62*722Smuffin _ml_open_library(void)
630Sstevel@tonic-gate {
640Sstevel@tonic-gate 	char buf[BUFSIZ];
650Sstevel@tonic-gate 
660Sstevel@tonic-gate 	if (handle != (void *)NULL) /* This library is already opened */
67*722Smuffin 		return (handle);
680Sstevel@tonic-gate 
690Sstevel@tonic-gate 	/*
700Sstevel@tonic-gate 	 * Open the given library
710Sstevel@tonic-gate 	 */
720Sstevel@tonic-gate 	strcpy(buf, LIBRARY_PATH);
730Sstevel@tonic-gate 	strcat(buf, _code_set_info.code_name);
740Sstevel@tonic-gate 	strcat(buf, ".so");
750Sstevel@tonic-gate #ifdef DEBUG
760Sstevel@tonic-gate 	printf ("ml_open_library: buf = '%s'\n", buf);
770Sstevel@tonic-gate #endif
780Sstevel@tonic-gate 	handle = dlopen(buf, 1);
790Sstevel@tonic-gate 	if (handle != (void *)NULL)
800Sstevel@tonic-gate 		_code_set_info.open_flag = 1;
810Sstevel@tonic-gate #ifdef DEBUG
820Sstevel@tonic-gate 	else
830Sstevel@tonic-gate 		printf ("_ml_open_library: dlopen failed\n");
840Sstevel@tonic-gate #endif
85*722Smuffin 	return (handle);
860Sstevel@tonic-gate }
87