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dlfcn.h revision 1.7 
      1 /*	$NetBSD: dlfcn.h,v 1.7 1998/05/12 21:17:09 pk Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1995 Paul Kranenburg
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *      This product includes software developed by Paul Kranenburg.
     18  * 4. The name of the author may not be used to endorse or promote products
     19  *    derived from this software withough specific prior written permission
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 
     33 #ifndef _DLFCN_H_
     34 #define _DLFCN_H_
     35 
     36 #include <sys/cdefs.h>
     37 
     38 #if !defined(_XOPEN_SOURCE)
     39 typedef 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 	void		*dli_saddr;	/* Symbol address */
     44 } Dl_info;
     45 #endif /* !defined(_XOPEN_SOURCE) */
     46 
     47 /*
     48  * User interface to the run-time linker.
     49  */
     50 __BEGIN_DECLS
     51 extern void	*dlopen __P((const char *, int));
     52 extern int	dlclose __P((void *));
     53 extern void	*dlsym __P((void *, const char *));
     54 #if !defined(_XOPEN_SOURCE)
     55 extern int	dladdr __P((void *, Dl_info *));
     56 extern int	dlctl __P((void *, int, void *));
     57 #endif
     58 extern char	*dlerror __P((void));
     59 __END_DECLS
     60 
     61 /* Values for dlopen `mode'. */
     62 #define RTLD_LAZY	1
     63 #define RTLD_NOW	2
     64 #define RTLD_LOCAL	0x000
     65 #define RTLD_GLOBAL	0x100		/* Allow global searches in object */
     66 #if !defined(_XOPEN_SOURCE)
     67 #define DL_LAZY		RTLD_LAZY	/* Compat */
     68 #endif
     69 
     70 /*
     71  * dlctl() commands
     72  */
     73 #if !defined(_XOPEN_SOURCE)
     74 #define DL_GETERRNO	1
     75 #define DL_GETSYMBOL	2
     76 #if 0
     77 #define DL_SETSRCHPATH	x
     78 #define DL_GETLIST	x
     79 #define DL_GETREFCNT	x
     80 #define DL_GETLOADADDR	x
     81 #endif /* 0 */
     82 #endif /* !defined(_XOPEN_SOURCE) */
     83 
     84 #endif /* !defined(_DLFCN_H_) */
     85