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dlfcn.h revision 1.14 
      1 /*	$NetBSD: dlfcn.h,v 1.14 2003/04/28 23:16:13 bjh21 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 __P((const char *, int));
     59 int	dlclose __P((void *));
     60 void	*dlsym __P((void *, const char *));
     61 #if defined(_NETBSD_SOURCE)
     62 int	dladdr __P((const void *, Dl_info *));
     63 int	dlctl __P((void *, int, void *));
     64 #endif
     65 __aconst char *dlerror __P((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  * dlctl() commands
     79  */
     80 #if defined(_NETBSD_SOURCE)
     81 #define DL_GETERRNO	1
     82 #define DL_GETSYMBOL	2
     83 #if 0
     84 #define DL_SETSRCHPATH	x
     85 #define DL_GETLIST	x
     86 #define DL_GETREFCNT	x
     87 #define DL_GETLOADADDR	x
     88 #endif /* 0 */
     89 #endif /* defined(_NETBSD_SOURCE) */
     90 
     91 #endif /* !defined(_DLFCN_H_) */
     92