1 /* 2 * Copyright (c) 1994 3 * The Regents of the University of California. 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 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * $FreeBSD$ 34 */ 35 36 #ifndef _DLFCN_H_ 37 #define _DLFCN_H_ 38 #include <sys/cdefs.h> 39 40 /* 41 * Modes and flags for dlopen(). 42 */ 43 #define RTLD_LAZY 1 /* Bind function calls lazily */ 44 #define RTLD_NOW 2 /* Bind function calls immediately */ 45 #define RTLD_MODEMASK 0x3 46 #define RTLD_GLOBAL 0x100 /* Make symbols globally available */ 47 #define RTLD_LOCAL 0 /* Opposite of RTLD_GLOBAL, and the default */ 48 #define RTLD_TRACE 0x200 /* Trace loaded objects and exit */ 49 50 /* 51 * Special handle arguments for dlsym(). 52 */ 53 #define RTLD_NEXT ((void *) -1) /* Search subsequent objects */ 54 #define RTLD_DEFAULT ((void *) -2) /* Use default search algorithm */ 55 56 /* 57 * Structure filled in by dladdr(). 58 */ 59 typedef struct dl_info { 60 const char *dli_fname; /* Pathname of shared object */ 61 void *dli_fbase; /* Base address of shared object */ 62 const char *dli_sname; /* Name of nearest symbol */ 63 void *dli_saddr; /* Address of nearest symbol */ 64 } Dl_info; 65 66 __BEGIN_DECLS 67 int dladdr(const void *, Dl_info *); 68 int dlclose(void *); 69 const char *dlerror(void); 70 void dllockinit(void *_context, 71 void *(*_lock_create)(void *_context), 72 void (*_rlock_acquire)(void *_lock), 73 void (*_wlock_acquire)(void *_lock), 74 void (*_lock_release)(void *_lock), 75 void (*_lock_destroy)(void *_lock), 76 void (*_context_destroy)(void *_context)); 77 void *dlopen(const char *, int); 78 void *dlsym(void *, const char *); 79 __END_DECLS 80 81 #endif /* !_DLFCN_H_ */ 82