1/*	$NetBSD: dlfcn.h,v 1.25 2017/07/11 15:21:35 joerg 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 *
 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 29 * POSSIBILITY OF SUCH DAMAGE.
 30 */
 31
 32#ifndef _DLFCN_H_
 33#define _DLFCN_H_
 34
 35#include <sys/featuretest.h>
 36#include <sys/cdefs.h>
 37#include <machine/ansi.h>
 38
 39#ifdef	_BSD_SSIZE_T_
 40typedef	_BSD_SSIZE_T_	ssize_t;
 41#undef	_BSD_SSIZE_T_
 42#endif
 43
 44#if defined(_NETBSD_SOURCE)
 45typedef struct _dl_info {
 46	const char	*dli_fname;	/* File defining the symbol */
 47	void		*dli_fbase;	/* Base address */
 48	const char	*dli_sname;	/* Symbol name */
 49	const void	*dli_saddr;	/* Symbol address */
 50} Dl_info;
 51#endif /* defined(_NETBSD_SOURCE) */
 52
 53/*
 54 * User interface to the run-time linker.
 55 */
 56__BEGIN_DECLS
 57void *_dlauxinfo(void) __pure;
 58
 59void	*dlopen(const char *, int);
 60int	dlclose(void *);
 61void	*dlsym(void * __restrict, const char * __restrict);
 62#if defined(_NETBSD_SOURCE)
 63int	dladdr(const void * __restrict, Dl_info * __restrict);
 64int	dlctl(void *, int, void *);
 65int	dlinfo(void *, int, void *);
 66void	*dlvsym(void * __restrict, const char * __restrict,
 67	    const char * __restrict);
 68void	__dl_cxa_refcount(void *, ssize_t);
 69#endif
 70__aconst char *dlerror(void);
 71__END_DECLS
 72
 73/* Values for dlopen `mode'. */
 74#define RTLD_LAZY	1
 75#define RTLD_NOW	2
 76#define RTLD_GLOBAL	0x100		/* Allow global searches in object */
 77#define RTLD_LOCAL	0x200
 78#define RTLD_NODELETE	0x01000		/* Do not remove members. */
 79#define RTLD_NOLOAD	0x02000		/* Do not load if not already loaded. */
 80#if defined(_NETBSD_SOURCE)
 81#define DL_LAZY		RTLD_LAZY	/* Compat */
 82#endif
 83
 84/* 
 85 * Special handle arguments for dlsym().
 86 */   
 87#define	RTLD_NEXT	((void *) -1)	/* Search subsequent objects. */
 88#define	RTLD_DEFAULT	((void *) -2)	/* Use default search algorithm. */
 89#define	RTLD_SELF	((void *) -3)	/* Search the caller itself. */
 90
 91/*
 92 * dlctl() commands
 93 */
 94#if defined(_NETBSD_SOURCE)
 95#define DL_GETERRNO	1
 96#define DL_GETSYMBOL	2
 97#if 0
 98#define DL_SETSRCHPATH	x
 99#define DL_GETLIST	x
100#define DL_GETREFCNT	x
101#define DL_GETLOADADDR	x
102#endif /* 0 */
103#endif /* defined(_NETBSD_SOURCE) */
104
105/*
106 * dlinfo() commands
107 *
108 * From Solaris: http://docs.sun.com/app/docs/doc/816-5168/dlinfo-3c?a=view
109 */
110#if defined(_NETBSD_SOURCE)
111#define RTLD_DI_LINKMAP		3
112#if 0
113#define RTLD_DI_ARGSINFO	1
114#define RTLD_DI_CONFIGADDR	2
115#define RTLD_DI_LMID		4
116#define RTLD_DI_SERINFO		5
117#define RTLD_DI_SERINFOSIZE	6
118#define RTLD_DI_ORIGIN		7
119#define RTLD_DI_GETSIGNAL	8
120#define RTLD_DI_SETSIGNAL	9
121#endif
122#endif /* _NETBSD_SOURCE */
123
124#endif /* !defined(_DLFCN_H_) */