mirror of https://github.com/openbsd/src.git
101 lines
3.2 KiB
C
101 lines
3.2 KiB
C
/* $OpenBSD: dlfcn.h,v 1.16 2022/08/20 17:39:22 tb Exp $ */
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/* $NetBSD: dlfcn.h,v 1.2 1995/06/05 19:38:00 pk Exp $ */
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/*
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* Copyright (c) 1995 Paul Kranenburg
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Paul Kranenburg.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _DLFCN_H_
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#define _DLFCN_H_
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#include <sys/cdefs.h>
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/* Values for dlopen `mode'. */
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#define RTLD_LAZY 1
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#define RTLD_NOW 2
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#define RTLD_GLOBAL 0x100
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#define RTLD_LOCAL 0x000
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#define RTLD_TRACE 0x200
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#define RTLD_NODELETE 0x400
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#define RTLD_NOLOAD 0x800
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/*
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* Special handle arguments for dlsym().
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*/
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#define RTLD_NEXT ((void *) -1) /* Search subsequent objects. */
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#define RTLD_DEFAULT ((void *) -2) /* Use default search algorithm. */
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#define RTLD_SELF ((void *) -3) /* Search the caller itself. */
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#if __BSD_VISIBLE
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/*
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* Structure filled in by dladdr().
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*/
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typedef struct dl_info {
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const char *dli_fname; /* Pathname of shared object. */
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void *dli_fbase; /* Base address of shared object. */
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const char *dli_sname; /* Name of nearest symbol. */
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void *dli_saddr; /* Address of nearest symbol. */
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} Dl_info;
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/*
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* dlctl() commands
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*/
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#define DL_GETERRNO 1
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#define DL_SETSRCHPATH x
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#define DL_GETLIST x
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#define DL_GETREFCNT x
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#define DL_GETLOADADDR x
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#define DL_SETTHREADLCK 2
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#define DL_SETBINDLCK 3
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#define DL_REFERENCE 4
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#define DL_LAZY RTLD_LAZY /* Compat */
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#endif /* __BSD_VISIBLE */
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/*
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* User interface to the run-time linker.
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*/
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__BEGIN_DECLS
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void *dlopen(const char *, int);
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int dlclose(void *);
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void *dlsym(void *__restrict, const char *__restrict);
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char *dlerror(void);
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#if __BSD_VISIBLE
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int dladdr(const void *, Dl_info *);
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int dlctl(void *, int, void *);
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#endif /* __BSD_VISIBLE */
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__END_DECLS
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#endif /* _DLFCN_H_ */
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