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Gregory Nutt
83 lines
3.6 KiB
C
83 lines
3.6 KiB
C
/****************************************************************************
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* libc/dllfcn/lib_dlsym.c
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*
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* Copyright (C) 2017 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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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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*
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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
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* 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 COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* 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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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <dllfcn.h>
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: dlsym
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*
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* Description:
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* dlsym() allows a process to obtain the address of a symbol defined
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* within an object made accessible through a dlopen() call. handle is the
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* value returned from a call to dlopen() (and which has not since been
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* released via a call to dlclose()), name is the symbol's name as a
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* character string.
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*
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* dlsym() will search for the named symbol in all objects loaded
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* automatically as a result of loading the object referenced by handle
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* (see dlopen()). Load ordering is used in dlsym() operations upon the
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* global symbol object. The symbol resolution algorithm used will be
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* dependency order as described in dlopen().
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*
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* Input Parameters:
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* handle - The opaque, non-NULL value returned by a previous successful
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* call to dlopen().
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* name - A pointer to the symbol name string.
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*
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* Returned Value:
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* If handle does not refer to a valid object opened by dlopen(), or if
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* the named symbol cannot be found within any of the objects associated
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* with handle, dlsym() will return NULL. More detailed diagnostic
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* information will be available through dlerror().
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*
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* Reference: OpenGroup.org
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*
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****************************************************************************/
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FAR void *dlsym(FAR void *handle, FAR const char *name)
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{
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#warning Missing logic
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return NULL;
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} |