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dlfcn.h
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dlfcn.h
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/* $OpenBSD: dlfcn.h,v 1.11 2007/05/29 04:47:17 jason Exp $ */
/* $NetBSD: dlfcn.h,v 1.2 1995/06/05 19:38:00 pk Exp $ */
/*
* Copyright (c) 1995 Paul Kranenburg
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Paul Kranenburg.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _DLFCN_H_
#define _DLFCN_H_
#include <sys/cdefs.h>
/*
* Structure filled in by dladdr().
*/
typedef struct dl_info {
const char *dli_fname; /* Pathname of shared object. */
void *dli_fbase; /* Base address of shared object. */
const char *dli_sname; /* Name of nearest symbol. */
void *dli_saddr; /* Address of nearest symbol. */
} Dl_info;
/*
* User interface to the run-time linker.
*/
__BEGIN_DECLS
extern void *dlopen(const char *, int);
extern int dlclose(void *);
extern void *dlsym(void *, const char *);
extern int dlctl(void *, int, void *);
extern const char *dlerror(void);
extern int dladdr(const void *, Dl_info *);
__END_DECLS
/* Values for dlopen `mode'. */
#define RTLD_LAZY 1
#define RTLD_NOW 2
#define RTLD_GLOBAL 0x100
#define RTLD_LOCAL 0x000
#define DL_LAZY RTLD_LAZY /* Compat */
#define RTLD_TRACE 0x200
/*
* Special handle arguments for dlsym().
*/
#define RTLD_NEXT ((void *) -1) /* Search subsequent objects. */
#define RTLD_DEFAULT ((void *) -2) /* Use default search algorithm. */
#define RTLD_SELF ((void *) -3) /* Search the caller itself. */
/*
* dlctl() commands
*/
#define DL_GETERRNO 1
#define DL_SETSRCHPATH x
#define DL_GETLIST x
#define DL_GETREFCNT x
#define DL_GETLOADADDR x
#define DL_SETTHREADLCK 2
#define DL_SETBINDLCK 3
#endif /* _DLFCN_H_ */