1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 1990 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* 28 * misc routines 29 */ 30 31 #pragma ident "%Z%%M% %I% %E% SMI" 32 33 #if !defined(lint) && defined(SCCSIDS) 34 static char *sccsid = "%Z%%M% %I% %E% SMI"; 35 #endif 36 37 #include <stdio.h> 38 #include <sys/types.h> 39 #include "codeset.h" 40 #include "mbextern.h" 41 #include <dlfcn.h> 42 43 static void *handle = (void *)NULL; /* initialize it with -1 */ 44 45 /* 46 * Close current library library 47 */ 48 _ml_close_library() 49 { 50 if (handle == (void *)NULL) { 51 _code_set_info.open_flag = NULL; 52 return; 53 } 54 55 dlclose(handle); 56 _code_set_info.open_flag = NULL; 57 handle = (void *)NULL; 58 return(0); 59 } 60 61 /* 62 * Open the given library 63 */ 64 void * 65 _ml_open_library() 66 { 67 char buf[BUFSIZ]; 68 69 if (handle != (void *)NULL) /* This library is already opened */ 70 return(handle); 71 72 /* 73 * Open the given library 74 */ 75 strcpy(buf, LIBRARY_PATH); 76 strcat(buf, _code_set_info.code_name); 77 strcat(buf, ".so"); 78 #ifdef DEBUG 79 printf ("ml_open_library: buf = '%s'\n", buf); 80 #endif 81 handle = dlopen(buf, 1); 82 if (handle != (void *)NULL) 83 _code_set_info.open_flag = 1; 84 #ifdef DEBUG 85 else 86 printf ("_ml_open_library: dlopen failed\n"); 87 #endif 88 return(handle); 89 } 90