1 /** $MirOS: src/include/dlfcn.h,v 1.2 2006/08/30 03:46:12 tg Exp $ */ 2 /* $OpenBSD: dlfcn.h,v 1.9 2004/08/11 19:14:56 drahn Exp $ */ 3 /* $NetBSD: dlfcn.h,v 1.2 1995/06/05 19:38:00 pk Exp $ */ 4 5 /* 6 * Copyright (c) 1995 Paul Kranenburg 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by Paul Kranenburg. 20 * 4. The name of the author may not be used to endorse or promote products 21 * derived from this software without specific prior written permission 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #ifndef _DLFCN_H_ 36 #define _DLFCN_H_ 37 38 #include <sys/cdefs.h> 39 40 /* 41 * Structure filled in by dladdr(). 42 */ 43 typedef struct dl_info { 44 const char *dli_fname; /* Pathname of shared object. */ 45 void *dli_fbase; /* Base address of shared object. */ 46 const char *dli_sname; /* Name of nearest symbol. */ 47 void *dli_saddr; /* Address of nearest symbol. */ 48 } Dl_info; 49 50 /* 51 * User interface to the run-time linker. 52 */ 53 __BEGIN_DECLS 54 extern void *dlopen(const char *, int); 55 extern int dlclose(void *); 56 extern void *dlsym(void *, const char *); 57 extern int dlctl(void *, int, void *); 58 extern const char *dlerror(void); 59 extern int dladdr(const void *, Dl_info *); 60 __END_DECLS 61 62 /* Values for dlopen `mode'. */ 63 #define RTLD_LAZY 1 64 #define RTLD_NOW 2 65 #define RTLD_GLOBAL 0x100 66 #define RTLD_LOCAL 0x000 67 #define RTLD_TRACE 0x200 68 #define DL_LAZY RTLD_LAZY /* Compat */ 69 70 /* 71 * Special handle arguments for dlsym(). 72 */ 73 #define RTLD_NEXT ((void *) -1) /* Search subsequent objects. */ 74 #define RTLD_DEFAULT ((void *) -2) /* Use default search algorithm. */ 75 #define RTLD_SELF ((void *) -3) /* Search the caller itself. */ 76 77 /* 78 * dlctl() commands 79 */ 80 #define DL_GETERRNO 1 81 #define DL_SETSRCHPATH x 82 #define DL_GETLIST x 83 #define DL_GETREFCNT x 84 #define DL_GETLOADADDR x 85 #define DL_SETTHREADLCK 2 86 87 #endif /* _DLFCN_H_ */ 88