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- /****************************************************************************
- * binfmt/builtin.c
- *
- * Copyright (C) 2012 Gregory Nutt. All rights reserved.
- * Author: Gregory Nutt <gnutt@nuttx.org>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * 3. Neither the name NuttX nor the names of its contributors may be
- * used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- ****************************************************************************/
- /****************************************************************************
- * 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/binfmt/builtin.h>
- #ifdef CONFIG_BUILTIN
- /****************************************************************************
- * Pre-processor Definitions
- ****************************************************************************/
- /****************************************************************************
- * Private Function Prototypes
- ****************************************************************************/
- static int builtin_loadbinary(FAR struct binary_s *binp);
- /****************************************************************************
- * 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(struct binary_s *binp)
- {
- FAR const char *filename;
- FAR const struct builtin_s *builtin;
- int fd;
- int index;
- int ret;
- binfo("Loading file: %s\n", binp->filename);
- /* Open the binary file for reading (only) */
- fd = nx_open(binp->filename, O_RDONLY);
- if (fd < 0)
- {
- berr("ERROR: Failed to open binary %s: %d\n", binp->filename, fd);
- return fd;
- }
- /* If this file is a BINFS file system, then we can recover the name of
- * the file using the FIOC_FILENAME ioctl() call.
- */
- ret = ioctl(fd, FIOC_FILENAME, (unsigned long)((uintptr_t)&filename));
- if (ret < 0)
- {
- int errval = get_errno();
- berr("ERROR: FIOC_FILENAME ioctl failed: %d\n", errval);
- close(fd);
- return -errval;
- }
- /* 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)
- {
- int errval = get_errno();
- berr("ERROR: %s is not a builtin application\n", filename);
- close(fd);
- return -errval;
- }
- /* 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;
- close(fd);
- 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)
- {
- (void)unregister_binfmt(&g_builtin_binfmt);
- }
- #endif /* CONFIG_BUILTIN */
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