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2321c47418
Mainly focus on files that use BSD 3-Clause license. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point.
140 lines
5.0 KiB
C
140 lines
5.0 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1994
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* The Regents of the University of California. 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. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _DLFCN_H_
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#define _DLFCN_H_
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#include <sys/_types.h>
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/*
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* Modes and flags for dlopen().
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*/
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#define RTLD_LAZY 1 /* Bind function calls lazily. */
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#define RTLD_NOW 2 /* Bind function calls immediately. */
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#define RTLD_MODEMASK 0x3
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#define RTLD_GLOBAL 0x100 /* Make symbols globally available. */
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#define RTLD_LOCAL 0 /* Opposite of RTLD_GLOBAL, and the default. */
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#define RTLD_TRACE 0x200 /* Trace loaded objects and exit. */
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#define RTLD_NODELETE 0x01000 /* Do not remove members. */
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#define RTLD_NOLOAD 0x02000 /* Do not load if not already loaded. */
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/*
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* Request arguments for dlinfo().
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*/
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#define RTLD_DI_LINKMAP 2 /* Obtain link map. */
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#define RTLD_DI_SERINFO 4 /* Obtain search path info. */
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#define RTLD_DI_SERINFOSIZE 5 /* ... query for required space. */
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#define RTLD_DI_ORIGIN 6 /* Obtain object origin */
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#define RTLD_DI_MAX RTLD_DI_ORIGIN
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/*
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* Special handle arguments for dlsym()/dlinfo().
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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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#ifndef _SIZE_T_DECLARED
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typedef __size_t size_t;
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#define _SIZE_T_DECLARED
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#endif
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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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* The actual type declared by this typedef is immaterial, provided that
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* it is a function pointer. Its purpose is to provide a return type for
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* dlfunc() which can be cast to a function pointer type without depending
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* on behavior undefined by the C standard, which might trigger a compiler
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* diagnostic. We intentionally declare a unique type signature to force
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* a diagnostic should the application not cast the return value of dlfunc()
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* appropriately.
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*/
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struct __dlfunc_arg {
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int __dlfunc_dummy;
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};
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typedef void (*dlfunc_t)(struct __dlfunc_arg);
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/*
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* Structures, returned by the RTLD_DI_SERINFO dlinfo() request.
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*/
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typedef struct dl_serpath {
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char * dls_name; /* single search path entry */
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unsigned int dls_flags; /* path information */
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} Dl_serpath;
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typedef struct dl_serinfo {
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size_t dls_size; /* total buffer size */
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unsigned int dls_cnt; /* number of path entries */
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Dl_serpath dls_serpath[1]; /* there may be more than one */
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} Dl_serinfo;
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#endif /* __BSD_VISIBLE */
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__BEGIN_DECLS
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/* XSI functions first. */
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int dlclose(void *);
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char *dlerror(void);
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void *dlopen(const char *, int);
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void *dlsym(void * __restrict, const char * __restrict);
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#if __BSD_VISIBLE
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void *fdlopen(int, int);
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int dladdr(const void * __restrict, Dl_info * __restrict);
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dlfunc_t dlfunc(void * __restrict, const char * __restrict);
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int dlinfo(void * __restrict, int, void * __restrict);
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void dllockinit(void *_context,
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void *(*_lock_create)(void *_context),
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void (*_rlock_acquire)(void *_lock),
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void (*_wlock_acquire)(void *_lock),
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void (*_lock_release)(void *_lock),
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void (*_lock_destroy)(void *_lock),
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void (*_context_destroy)(void *_context));
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void *dlvsym(void * __restrict, const char * __restrict,
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const char * __restrict);
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#endif /* __BSD_VISIBLE */
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__END_DECLS
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#endif /* !_DLFCN_H_ */
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