dlfcn.h revision 90172 
1238384Sjkim/*
2238384Sjkim * Copyright (c) 1994
3238384Sjkim *	The Regents of the University of California.  All rights reserved.
4238384Sjkim *
5238384Sjkim * Redistribution and use in source and binary forms, with or without
6238384Sjkim * modification, are permitted provided that the following conditions
7238384Sjkim * are met:
8238384Sjkim * 1. Redistributions of source code must retain the above copyright
9238384Sjkim *    notice, this list of conditions and the following disclaimer.
10238384Sjkim * 2. Redistributions in binary form must reproduce the above copyright
11238384Sjkim *    notice, this list of conditions and the following disclaimer in the
12238384Sjkim *    documentation and/or other materials provided with the distribution.
13238384Sjkim * 3. All advertising materials mentioning features or use of this software
14238384Sjkim *    must display the following acknowledgement:
15238384Sjkim *	This product includes software developed by the University of
16238384Sjkim *	California, Berkeley and its contributors.
17238384Sjkim * 4. Neither the name of the University nor the names of its contributors
18238384Sjkim *    may be used to endorse or promote products derived from this software
19238384Sjkim *    without specific prior written permission.
20238384Sjkim *
21238384Sjkim * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22238384Sjkim * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23238384Sjkim * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24238384Sjkim * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25238384Sjkim * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26238384Sjkim * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27238384Sjkim * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28238384Sjkim * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29238384Sjkim * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30238384Sjkim * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31238384Sjkim * SUCH DAMAGE.
32238384Sjkim *
33238384Sjkim * $FreeBSD: head/include/dlfcn.h 90172 2002-02-04 10:33:48Z sobomax $
34238384Sjkim */
35238384Sjkim
36238384Sjkim#ifndef _DLFCN_H_
37238384Sjkim#define	_DLFCN_H_
38238384Sjkim#include <sys/cdefs.h>
39238384Sjkim
40238384Sjkim/*
41238384Sjkim * 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 */
59typedef 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
67int dladdr __P((const void *, Dl_info *));
68int dlclose __P((void *));
69const char *dlerror __P((void));
70void dllockinit __P((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)));
77void *dlopen __P((const char *, int));
78void *dlsym __P((void *, const char *));
79__END_DECLS
80
81#endif /* !_DLFCN_H_ */
82