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- /****************************************************************************
- * binfmt/builtin.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 <sys/types.h>
- #include <sys/ioctl.h>
- #include <stdint.h>
- #include <string.h>
- #include <fcntl.h>
- #include <debug.h>
- #include <errno.h>
- #include <nuttx/fs/fs.h>
- #include <nuttx/fs/ioctl.h>
- #include <nuttx/binfmt/binfmt.h>
- #include <nuttx/lib/builtin.h>
- #ifdef CONFIG_FS_BINFS
- /****************************************************************************
- * Private Function Prototypes
- ****************************************************************************/
- static int builtin_loadbinary(FAR struct binary_s *binp,
- FAR const char *filename,
- FAR const struct symtab_s *exports,
- int nexports);
- /****************************************************************************
- * Private Data
- ****************************************************************************/
- static struct binfmt_s g_builtin_binfmt =
- {
- NULL, /* next */
- builtin_loadbinary, /* load */
- NULL, /* unload */
- };
- /****************************************************************************
- * Private Functions
- ****************************************************************************/
- /****************************************************************************
- * Name: builtin_loadbinary
- *
- * Description:
- * Verify that the file is an builtin binary.
- *
- ****************************************************************************/
- static int builtin_loadbinary(FAR struct binary_s *binp,
- FAR const char *filename,
- FAR const struct symtab_s *exports,
- int nexports)
- {
- FAR const struct builtin_s *builtin;
- struct file file;
- int index;
- int ret;
- binfo("Loading file: %s\n", filename);
- /* Open the binary file for reading (only) */
- ret = file_open(&file, filename, O_RDONLY);
- if (ret < 0)
- {
- berr("ERROR: Failed to open binary %s: %d\n", filename, ret);
- return ret;
- }
- /* If this file is a BINFS file system, then we can recover the name of
- * the file using the FIOC_FILENAME ioctl() call.
- */
- ret = file_ioctl(&file, FIOC_FILENAME,
- (unsigned long)((uintptr_t)&filename));
- if (ret < 0)
- {
- berr("ERROR: FIOC_FILENAME ioctl failed: %d\n", ret);
- file_close(&file);
- return ret;
- }
- /* Other file systems may also support FIOC_FILENAME, so the real proof
- * is that we can look up the index to this name in g_builtins[].
- */
- index = builtin_isavail(filename);
- if (index < 0)
- {
- berr("ERROR: %s is not a builtin application\n", filename);
- file_close(&file);
- return index;
- }
- /* Return the load information. NOTE: that there is no way to configure
- * the priority. That is a bug and needs to be fixed.
- */
- builtin = builtin_for_index(index);
- binp->entrypt = builtin->main;
- binp->stacksize = builtin->stacksize;
- binp->priority = builtin->priority;
- file_close(&file);
- return OK;
- }
- /****************************************************************************
- * Public Functions
- ****************************************************************************/
- /****************************************************************************
- * Name: builtin_initialize
- *
- * Description:
- * In order to use the builtin binary format, this function must be called
- * during system initialize to register the builtin binary format.
- *
- * Returned Value:
- * This is a NuttX internal function so it follows the convention that
- * 0 (OK) is returned on success and a negated errno is returned on
- * failure.
- *
- ****************************************************************************/
- int builtin_initialize(void)
- {
- int ret;
- /* Register ourselves as a binfmt loader */
- binfo("Registering Builtin Loader\n");
- ret = register_binfmt(&g_builtin_binfmt);
- if (ret != 0)
- {
- berr("Failed to register binfmt: %d\n", ret);
- }
- return ret;
- }
- /****************************************************************************
- * Name: builtin_uninitialize
- *
- * Description:
- * Unregister the builtin binary loader
- *
- * Returned Value:
- * None
- *
- ****************************************************************************/
- void builtin_uninitialize(void)
- {
- unregister_binfmt(&g_builtin_binfmt);
- }
- #endif /* CONFIG_FS_BINFS */
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