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- /****************************************************************************
- * 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;
- }
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