1 /* $NetBSD: dlfcn.h,v 1.18 2005/03/21 13:25:22 kleink Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Paul Kranenburg. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #ifndef _DLFCN_H_ 40 #define _DLFCN_H_ 41 42 #include <sys/featuretest.h> 43 #include <sys/cdefs.h> 44 45 #if defined(_NETBSD_SOURCE) 46 typedef struct _dl_info { 47 const char *dli_fname; /* File defining the symbol */ 48 void *dli_fbase; /* Base address */ 49 const char *dli_sname; /* Symbol name */ 50 const void *dli_saddr; /* Symbol address */ 51 } Dl_info; 52 #endif /* defined(_NETBSD_SOURCE) */ 53 54 /* 55 * User interface to the run-time linker. 56 */ 57 __BEGIN_DECLS 58 void *dlopen(const char *, int); 59 int dlclose(void *); 60 void *dlsym(void * __restrict, const char * __restrict); 61 #if defined(_NETBSD_SOURCE) 62 int dladdr(const void * __restrict, Dl_info * __restrict); 63 int dlctl(void *, int, void *); 64 #endif 65 __aconst char *dlerror(void); 66 __END_DECLS 67 68 /* Values for dlopen `mode'. */ 69 #define RTLD_LAZY 1 70 #define RTLD_NOW 2 71 #define RTLD_GLOBAL 0x100 /* Allow global searches in object */ 72 #define RTLD_LOCAL 0x200 73 #if defined(_NETBSD_SOURCE) 74 #define DL_LAZY RTLD_LAZY /* Compat */ 75 #endif 76 77 /* 78 * Special handle arguments for dlsym(). 79 */ 80 #define RTLD_NEXT ((void *) -1) /* Search subsequent objects. */ 81 #define RTLD_DEFAULT ((void *) -2) /* Use default search algorithm. */ 82 #define RTLD_SELF ((void *) -3) /* Search the caller itself. */ 83 84 /* 85 * dlctl() commands 86 */ 87 #if defined(_NETBSD_SOURCE) 88 #define DL_GETERRNO 1 89 #define DL_GETSYMBOL 2 90 #if 0 91 #define DL_SETSRCHPATH x 92 #define DL_GETLIST x 93 #define DL_GETREFCNT x 94 #define DL_GETLOADADDR x 95 #endif /* 0 */ 96 #endif /* defined(_NETBSD_SOURCE) */ 97 98 #endif /* !defined(_DLFCN_H_) */ 99