52482219c8
Renaming "modlib" to "libelf" is more in line with the implementation content, which makes it easier for individual developers to understand the capabilities of this module. CONFIG_LIBC_MODLIB -> CONFIG_LIBC_ELF Signed-off-by: chao an <anchao.archer@bytedance.com>
80 lines
2.7 KiB
C
80 lines
2.7 KiB
C
/****************************************************************************
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* libs/libc/elf/elf_gethandle.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 <assert.h>
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#include <debug.h>
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#include <errno.h>
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#include <nuttx/lib/elf.h>
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: libelf_modhandle
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*
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* Description:
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* libelf_modhandle() returns the module handle for the installed
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* module with the provided name. A secondary use of this function is to
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* determine if a module has been loaded or not.
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*
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* Input Parameters:
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* name - A pointer to the module name string.
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*
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* Returned Value:
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* The non-NULL module handle previously returned by libelf_insert() is
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* returned on success. If no module with that name is installed,
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* libelf_modhandle() will return a NULL handle and the errno variable
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* will be set appropriately.
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*
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****************************************************************************/
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#ifdef HAVE_LIBC_ELF_NAMES
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FAR void *libelf_gethandle(FAR const char *name)
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{
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FAR struct module_s *modp;
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DEBUGASSERT(name != NULL);
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/* Get exclusive access to the module registry */
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libelf_registry_lock();
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/* Find the module entry for this name in the registry */
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modp = libelf_registry_find(name);
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if (modp == NULL)
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{
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berr("ERROR: Failed to find module %s\n", name);
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set_errno(ENOENT);
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}
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libelf_registry_unlock();
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return modp;
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}
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#endif /* HAVE_LIBC_ELF_NAMES */
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