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 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* 30 * misc routines 31 */ 32 33 #include <stdio.h> 34 #include <sys/types.h> 35 #include "codeset.h" 36 #include "mbextern.h" 37 #include <dlfcn.h> 38 39 static void *handle = (void *)NULL; /* initialize it with NULL */ 40 41 /* 42 * Close current library library 43 */ 44 int 45 _ml_close_library(void) 46 { 47 if (handle == (void *)NULL) { 48 _code_set_info.open_flag = NULL; 49 return (-1); 50 } 51 52 dlclose(handle); 53 _code_set_info.open_flag = NULL; 54 handle = (void *)NULL; 55 return (0); 56 } 57 58 /* 59 * Open the given library 60 */ 61 void * 62 _ml_open_library(void) 63 { 64 char buf[BUFSIZ]; 65 66 if (handle != (void *)NULL) /* This library is already opened */ 67 return (handle); 68 69 /* 70 * Open the given library 71 */ 72 strcpy(buf, LIBRARY_PATH); 73 strcat(buf, _code_set_info.code_name); 74 strcat(buf, ".so"); 75 #ifdef DEBUG 76 printf ("ml_open_library: buf = '%s'\n", buf); 77 #endif 78 handle = dlopen(buf, 1); 79 if (handle != (void *)NULL) 80 _code_set_info.open_flag = 1; 81 #ifdef DEBUG 82 else 83 printf ("_ml_open_library: dlopen failed\n"); 84 #endif 85 return (handle); 86 } 87