libc/elf: rename modlib to libelf

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>
2026-05-31 14:27:37 +08:00 · 2025-04-10 09:51:25 +08:00
parent 1b9e6a8563
commit 52482219c8
120 changed files with 788 additions and 785 deletions
@@ -0,0 +1,80 @@
+/****************************************************************************
+ * libs/libc/elf/elf_gethandle.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 <assert.h>
+#include <debug.h>
+#include <errno.h>
+
+#include <nuttx/lib/elf.h>
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: libelf_modhandle
+ *
+ * Description:
+ *   libelf_modhandle() returns the module handle for the installed
+ *   module with the provided name.  A secondary use of this function is to
+ *   determine if a module has been loaded or not.
+ *
+ * Input Parameters:
+ *   name   - A pointer to the module name string.
+ *
+ * Returned Value:
+ *   The non-NULL module handle previously returned by libelf_insert() is
+ *   returned on success.  If no module with that name is installed,
+ *   libelf_modhandle() will return a NULL handle and the errno variable
+ *   will be set appropriately.
+ *
+ ****************************************************************************/
+
+#ifdef HAVE_LIBC_ELF_NAMES
+
+FAR void *libelf_gethandle(FAR const char *name)
+{
+  FAR struct module_s *modp;
+
+  DEBUGASSERT(name != NULL);
+
+  /* Get exclusive access to the module registry */
+
+  libelf_registry_lock();
+
+  /* Find the module entry for this name in the registry */
+
+  modp = libelf_registry_find(name);
+  if (modp == NULL)
+    {
+      berr("ERROR: Failed to find module %s\n", name);
+      set_errno(ENOENT);
+    }
+
+  libelf_registry_unlock();
+  return modp;
+}
+
+#endif /* HAVE_LIBC_ELF_NAMES */