cb8df39207
and remove the unused macros and unnecessary cast Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
60 lines
2.2 KiB
C
60 lines
2.2 KiB
C
/****************************************************************************
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* libs/libc/dlfcn/lib_dlerror.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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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 <errno.h>
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#include <dlfcn.h>
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#include <string.h>
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: dlerror
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*
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* Description:
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* dlerror() returns a null-terminated character string (with no trailing
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* newline) that describes the last error that occurred during dynamic
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* linking processing. If no dynamic linking errors have occurred since
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* the last invocation of dlerror(), dlerror() returns NULL. Thus,
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* invoking dlerror() a second time, immediately following a prior
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* invocation, will result in NULL being returned.
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*
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* Input Parameters:
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* If successful, dlerror() returns a null-terminated character string.
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* Otherwise, NULL is returned.
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*
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* Returned Value:
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*
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* Reference: OpenGroup.org
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*
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****************************************************************************/
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FAR char *dlerror(void)
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{
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return strerror(get_errno());
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}
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