4be7a2dcf3
by the application, all NetBSD interfaces are made visible, even if some other feature-test macro (like _POSIX_C_SOURCE) is defined. <sys/featuretest.h> defined _NETBSD_SOURCE if none of _ANSI_SOURCE, _POSIX_C_SOURCE and _XOPEN_SOURCE is defined, so as to preserve existing behaviour. This has two major advantages: + Programs that require non-POSIX facilities but define _POSIX_C_SOURCE can trivially be overruled by putting -D_NETBSD_SOURCE in their CFLAGS. + It makes most of the #ifs simpler, in that they're all now ORs of the various macros, rather than having checks for (!defined(_ANSI_SOURCE) || !defined(_POSIX_C_SOURCE) || !defined(_XOPEN_SOURCE)) all over the place. I've tried not to change the semantics of the headers in any case where _NETBSD_SOURCE wasn't defined, but there were some places where the current semantics were clearly mad, and retaining them was harder than correcting them. In particular, I've mostly normalised things so that _ANSI_SOURCE gets you the smallest set of stuff, then _POSIX_C_SOURCE, _XOPEN_SOURCE and _NETBSD_SOURCE in that order. Tested by building for vax, encouraged by thorpej, and uncontested in tech-userlevel for a week.
92 lines
3.2 KiB
C
92 lines
3.2 KiB
C
/* $NetBSD: dlfcn.h,v 1.14 2003/04/28 23:16:13 bjh21 Exp $ */
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/*-
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* Copyright (c) 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Paul Kranenburg.
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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 the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* 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/featuretest.h>
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#include <sys/cdefs.h>
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#if defined(_NETBSD_SOURCE)
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typedef struct _dl_info {
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const char *dli_fname; /* File defining the symbol */
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void *dli_fbase; /* Base address */
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const char *dli_sname; /* Symbol name */
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const void *dli_saddr; /* Symbol address */
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} Dl_info;
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#endif /* defined(_NETBSD_SOURCE) */
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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 __P((const char *, int));
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int dlclose __P((void *));
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void *dlsym __P((void *, const char *));
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#if defined(_NETBSD_SOURCE)
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int dladdr __P((const void *, Dl_info *));
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int dlctl __P((void *, int, void *));
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#endif
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__aconst char *dlerror __P((void));
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__END_DECLS
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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 /* Allow global searches in object */
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#define RTLD_LOCAL 0x200
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#if defined(_NETBSD_SOURCE)
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#define DL_LAZY RTLD_LAZY /* Compat */
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#endif
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/*
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* dlctl() commands
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*/
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#if defined(_NETBSD_SOURCE)
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#define DL_GETERRNO 1
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#define DL_GETSYMBOL 2
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#if 0
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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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#endif /* 0 */
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#endif /* defined(_NETBSD_SOURCE) */
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#endif /* !defined(_DLFCN_H_) */
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