nuttx/libs/libc/dlfcn/lib_dlerror.c
Alin Jerpelea b5d4a01821 libs: Author Gregory Nutt: update licenses to Apache
Gregory Nutt has submitted the SGA and we can migrate the licenses
 to Apache.

Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
2021-03-03 18:52:53 -08:00

60 lines
2.2 KiB
C

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