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      1 /***********************************************************************
      2  * Copyright (c) 2009, Secure Endpoints Inc.
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  *
      9  * - Redistributions of source code must retain the above copyright
     10  *   notice, this list of conditions and the following disclaimer.
     11  *
     12  * - Redistributions in binary form must reproduce the above copyright
     13  *   notice, this list of conditions and the following disclaimer in
     14  *   the documentation and/or other materials provided with the
     15  *   distribution.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     18  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     19  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
     20  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
     21  * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
     22  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     23  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     24  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     26  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
     28  * OF THE POSSIBILITY OF SUCH DAMAGE.
     29  *
     30  **********************************************************************/
     31 
     32 #ifndef __dlfcn_h__
     33 #define __dlfcn_h__
     34 
     35 #include <windows.h>
     36 
     37 #ifndef ROKEN_LIB_FUNCTION
     38 #ifdef _WIN32
     39 #define ROKEN_LIB_FUNCTION
     40 #define ROKEN_LIB_CALL     __cdecl
     41 #else
     42 #define ROKEN_LIB_FUNCTION
     43 #define ROKEN_LIB_CALL
     44 #endif
     45 #endif
     46 
     47 #ifdef _WIN32
     48 typedef int (__stdcall *DLSYM_RET_TYPE)();
     49 #else
     50 #define DLSYM_RET_TYPE void *
     51 #endif
     52 
     53 #ifdef __cplusplus
     54 extern "C" {
     55 #endif
     56 
     57 /* Implementation based on
     58    http://www.opengroup.org/onlinepubs/009695399/basedefs/dlfcn.h.html */
     59 
     60 #define RTLD_LAZY   (1<<0)
     61 
     62 #define RTLD_NOW    (1<<1)
     63 
     64 #define RTLD_GLOBAL (1<<2)
     65 
     66 #define RTLD_LOCAL  (1<<3)
     67 
     68 ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL
     69 dlclose(void *);
     70 
     71 ROKEN_LIB_FUNCTION char  * ROKEN_LIB_CALL
     72 dlerror(void);
     73 
     74 ROKEN_LIB_FUNCTION void  * ROKEN_LIB_CALL
     75 dlopen(const char *, int);
     76 
     77 ROKEN_LIB_FUNCTION DLSYM_RET_TYPE ROKEN_LIB_CALL
     78 dlsym(void *, const char *);
     79 
     80 typedef struct Dl_info {
     81     char    *dli_fname;
     82     char    _dli_buf[MAX_PATH + 2];
     83 } Dl_info, Dl_info_t;
     84 
     85 ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL
     86 dladdr(void *addr, Dl_info *dli);
     87 
     88 #ifdef __cplusplus
     89 } /* extern "C" */
     90 #endif
     91 
     92 #endif	/* __dlfcn_h__ */
     93