1/* $NetBSD: dlfcn.h,v 1.22 2010/12/24 12:41:42 skrll 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32#ifndef _DLFCN_H_ 33#define _DLFCN_H_ 34 35#include <sys/featuretest.h> 36#include <sys/cdefs.h> 37 38#if defined(_NETBSD_SOURCE) 39typedef struct _dl_info { 40 const char *dli_fname; /* File defining the symbol */ 41 void *dli_fbase; /* Base address */ 42 const char *dli_sname; /* Symbol name */ 43 const void *dli_saddr; /* Symbol address */ 44} Dl_info; 45#endif /* defined(_NETBSD_SOURCE) */ 46 47/* 48 * User interface to the run-time linker. 49 */ 50__BEGIN_DECLS 51void *dlopen(const char *, int); 52int dlclose(void *); 53void *dlsym(void * __restrict, const char * __restrict); 54#if defined(_NETBSD_SOURCE) 55int dladdr(const void * __restrict, Dl_info * __restrict); 56int dlctl(void *, int, void *); 57int dlinfo(void *, int, void *); 58void *dlvsym(void * __restrict, const char * __restrict, 59 const char * __restrict); 60#endif 61__aconst char *dlerror(void); 62__END_DECLS 63 64/* Values for dlopen `mode'. */ 65#define RTLD_LAZY 1 66#define RTLD_NOW 2 67#define RTLD_GLOBAL 0x100 /* Allow global searches in object */ 68#define RTLD_LOCAL 0x200 69#define RTLD_NODELETE 0x01000 /* Do not remove members. */ 70#define RTLD_NOLOAD 0x02000 /* Do not load if not already loaded. */ 71#if defined(_NETBSD_SOURCE) 72#define DL_LAZY RTLD_LAZY /* Compat */ 73#endif 74 75/* 76 * Special handle arguments for dlsym(). 77 */ 78#define RTLD_NEXT ((void *) -1) /* Search subsequent objects. */ 79#define RTLD_DEFAULT ((void *) -2) /* Use default search algorithm. */ 80#define RTLD_SELF ((void *) -3) /* Search the caller itself. */ 81 82/* 83 * dlctl() commands 84 */ 85#if defined(_NETBSD_SOURCE) 86#define DL_GETERRNO 1 87#define DL_GETSYMBOL 2 88#if 0 89#define DL_SETSRCHPATH x 90#define DL_GETLIST x 91#define DL_GETREFCNT x 92#define DL_GETLOADADDR x 93#endif /* 0 */ 94#endif /* defined(_NETBSD_SOURCE) */ 95 96/* 97 * dlinfo() commands 98 * 99 * From Solaris: http://docs.sun.com/app/docs/doc/816-5168/dlinfo-3c?a=view 100 */ 101#if defined(_NETBSD_SOURCE) 102#define RTLD_DI_LINKMAP 3 103#if 0 104#define RTLD_DI_ARGSINFO 1 105#define RTLD_DI_CONFIGADDR 2 106#define RTLD_DI_LMID 4 107#define RTLD_DI_SERINFO 5 108#define RTLD_DI_SERINFOSIZE 6 109#define RTLD_DI_ORIGIN 7 110#define RTLD_DI_GETSIGNAL 8 111#define RTLD_DI_SETSIGNAL 9 112#endif 113#endif /* _NETBSD_SOURCE */ 114 115#endif /* !defined(_DLFCN_H_) */ 116