sl@0: /*-
sl@0:  * Portions Copyright (c) 2006 Nokia Corporation
sl@0:  * All Rights Reserved.
sl@0:  *
sl@0:  * Copyright (c) 1994
sl@0:  *	The Regents of the University of California.  All rights reserved.
sl@0:  *
sl@0:  * Redistribution and use in source and binary forms, with or without
sl@0:  * modification, are permitted provided that the following conditions
sl@0:  * are met:
sl@0:  * 1. Redistributions of source code must retain the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer.
sl@0:  * 2. Redistributions in binary form must reproduce the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer in the
sl@0:  *    documentation and/or other materials provided with the distribution.
sl@0:  * 4. Neither the name of the University nor the names of its contributors
sl@0:  *    may be used to endorse or promote products derived from this software
sl@0:  *    without specific prior written permission.
sl@0:  *
sl@0:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
sl@0:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
sl@0:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
sl@0:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
sl@0:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
sl@0:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
sl@0:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
sl@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
sl@0:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
sl@0:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
sl@0:  * SUCH DAMAGE.
sl@0:  *
sl@0:  * $FreeBSD: src/include/dlfcn.h,v 1.19 2003/02/13 17:47:43 kan Exp $
sl@0:  */
sl@0: 
sl@0: #ifndef _DLFCN_H_
sl@0: #define	_DLFCN_H_
sl@0: 
sl@0: #include <sys/_types.h>
sl@0: 
sl@0: /*
sl@0:  * Modes and flags for dlopen().
sl@0:  */
sl@0: #define	RTLD_LAZY	1	/* Bind function calls lazily. */
sl@0: #define	RTLD_NOW	2	/* Bind function calls immediately. */
sl@0: #define	RTLD_MODEMASK	0x3
sl@0: #define	RTLD_GLOBAL	0x100	/* Make symbols globally available. */
sl@0: #define	RTLD_LOCAL	0	/* Opposite of RTLD_GLOBAL, and the default. */
sl@0: #define	RTLD_TRACE	0x200	/* Trace loaded objects and exit. */
sl@0: 
sl@0: /*
sl@0:  * Request arguments for dlinfo().
sl@0:  */
sl@0: #define	RTLD_DI_LINKMAP		2	/* Obtain link map. */
sl@0: #define	RTLD_DI_SERINFO		4	/* Obtain search path info. */
sl@0: #define	RTLD_DI_SERINFOSIZE	5	/*  ... query for required space. */
sl@0: #define	RTLD_DI_ORIGIN		6	/* Obtain object origin */
sl@0: #define	RTLD_DI_MAX		RTLD_DI_ORIGIN
sl@0: 
sl@0: /*
sl@0:  * Special handle arguments for dlsym()/dlinfo().
sl@0:  */
sl@0: #define	RTLD_NEXT	((void *) -1)	/* Search subsequent objects. */
sl@0: #define	RTLD_DEFAULT	((void *) -2)	/* Use default search algorithm. */
sl@0: #define	RTLD_SELF	((void *) -3)	/* Search the caller itself. */
sl@0: 
sl@0: #if __BSD_VISIBLE
sl@0: 
sl@0: #ifndef	_SIZE_T_DECLARED
sl@0: typedef __size_t        size_t;
sl@0: #define	_SIZE_T_DECLARED
sl@0: #endif
sl@0: 
sl@0: /*
sl@0:  * Structure filled in by dladdr().
sl@0:  */
sl@0: typedef	struct dl_info {
sl@0: 	const char	*dli_fname;	/* Pathname of shared object. */
sl@0: 	void		*dli_fbase;	/* Base address of shared object. */
sl@0: 	const char	*dli_sname;	/* Name of nearest symbol. */
sl@0: 	void		*dli_saddr;	/* Address of nearest symbol. */
sl@0: } Dl_info;
sl@0: 
sl@0: /*-
sl@0:  * The actual type declared by this typedef is immaterial, provided that
sl@0:  * it is a function pointer.  Its purpose is to provide a return type for
sl@0:  * dlfunc() which can be cast to a function pointer type without depending
sl@0:  * on behavior undefined by the C standard, which might trigger a compiler
sl@0:  * diagnostic.  We intentionally declare a unique type signature to force
sl@0:  * a diagnostic should the application not cast the return value of dlfunc()
sl@0:  * appropriately.
sl@0:  */
sl@0: struct __dlfunc_arg {
sl@0: 	int	__dlfunc_dummy;
sl@0: };
sl@0: 
sl@0: typedef	void (*dlfunc_t)(struct __dlfunc_arg);
sl@0: 
sl@0: /*
sl@0:  * Structures, returned by the RTLD_DI_SERINFO dlinfo() request.
sl@0:  */
sl@0: typedef struct dl_serpath {
sl@0: 	char *		dls_name;	/* single search path entry */
sl@0: 	unsigned int	dls_flags;	/* path information */
sl@0: } Dl_serpath;
sl@0: 
sl@0: typedef struct  dl_serinfo {
sl@0:         size_t		dls_size;       /* total buffer size */
sl@0:         unsigned int	dls_cnt;        /* number of path entries */
sl@0:         Dl_serpath	dls_serpath[1]; /* there may be more than one */
sl@0: } Dl_serinfo;
sl@0: 
sl@0: #endif /* __BSD_VISIBLE */
sl@0: 
sl@0: __BEGIN_DECLS
sl@0: /* XSI functions first. */
sl@0: 
sl@0: IMPORT_C void *dlopen(const char *filename, int flag);
sl@0: 
sl@0: IMPORT_C void *dlsym(void *handle, const char *symbol);
sl@0: 
sl@0: IMPORT_C char *dlerror(void);
sl@0: 
sl@0: IMPORT_C int dlclose(void *handle);
sl@0: 
sl@0: __END_DECLS
sl@0: 
sl@0: #endif /* !_DLFCN_H_ */