modify nuttx bug of lack of files

2021-06-11 11:25:07 +08:00
parent 4a7f51a5e9
commit 6d0f2ca39a
6752 changed files with 1528133 additions and 0 deletions
@@ -0,0 +1,110 @@
+/****************************************************************************
+ * libs/libc/modlib/modlib_iobuffer.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 <debug.h>
+#include <errno.h>
+
+#include <nuttx/lib/modlib.h>
+
+#include "libc.h"
+#include "modlib/modlib.h"
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: modlib_allocbuffer
+ *
+ * Description:
+ *   Perform the initial allocation of the I/O buffer, if it has not already
+ *   been allocated.
+ *
+ * Returned Value:
+ *   0 (OK) is returned on success and a negated errno is returned on
+ *   failure.
+ *
+ ****************************************************************************/
+
+int modlib_allocbuffer(FAR struct mod_loadinfo_s *loadinfo)
+{
+  /* Has a buffer been allocated> */
+
+  if (!loadinfo->iobuffer)
+    {
+      /* No.. allocate one now */
+
+      loadinfo->iobuffer = (FAR uint8_t *)
+                           lib_malloc(CONFIG_MODLIB_BUFFERSIZE);
+      if (!loadinfo->iobuffer)
+        {
+          berr("ERROR: Failed to allocate an I/O buffer\n");
+          return -ENOMEM;
+        }
+
+      loadinfo->buflen = CONFIG_MODLIB_BUFFERSIZE;
+    }
+
+  return OK;
+}
+
+/****************************************************************************
+ * Name: modlib_reallocbuffer
+ *
+ * Description:
+ *   Increase the size of I/O buffer by the specified buffer increment.
+ *
+ * Returned Value:
+ *   0 (OK) is returned on success and a negated errno is returned on
+ *   failure.
+ *
+ ****************************************************************************/
+
+int modlib_reallocbuffer(FAR struct mod_loadinfo_s *loadinfo,
+                         size_t increment)
+{
+  FAR void *buffer;
+  size_t newsize;
+
+  /* Get the new size of the allocation */
+
+  newsize = loadinfo->buflen + increment;
+
+  /* And perform the reallocation */
+
+  buffer = lib_realloc((FAR void *)loadinfo->iobuffer, newsize);
+  if (!buffer)
+    {
+      berr("ERROR: Failed to reallocate the I/O buffer\n");
+      return -ENOMEM;
+    }
+
+  /* Save the new buffer info */
+
+  loadinfo->iobuffer = buffer;
+  loadinfo->buflen   = newsize;
+  return OK;
+}