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-rw-r--r--nuttx/binfmt/Kconfig14
-rw-r--r--nuttx/binfmt/Makefile3
-rw-r--r--nuttx/binfmt/binfmt_exec.c9
-rw-r--r--nuttx/binfmt/binfmt_execmodule.c20
-rw-r--r--nuttx/binfmt/binfmt_loadmodule.c43
-rw-r--r--nuttx/binfmt/builtin.c196
-rw-r--r--nuttx/binfmt/elf.c2
-rw-r--r--nuttx/binfmt/libbuiltin/Kconfig4
-rw-r--r--nuttx/binfmt/libbuiltin/Make.defs52
-rw-r--r--nuttx/binfmt/libbuiltin/libbuiltin_getname.c92
-rw-r--r--nuttx/binfmt/libbuiltin/libbuiltin_isavail.c102
11 files changed, 524 insertions, 13 deletions
diff --git a/nuttx/binfmt/Kconfig b/nuttx/binfmt/Kconfig
index 495bd050f..8d6c0bb18 100644
--- a/nuttx/binfmt/Kconfig
+++ b/nuttx/binfmt/Kconfig
@@ -49,6 +49,20 @@ if ELF
source binfmt/libelf/Kconfig
endif
+config BUILTIN
+ bool "Support Builtin Applications"
+ default n
+ ---help---
+ Enable support for builtin applications. This features assigns a string
+ name to an application and in addition if FS_BINFS is defined, retaining
+ those names in a file system from which they can be executed. This feature
+ is also the underlying requirement to support built-in applications in the
+ NuttShell (NSH).
+
+if BUILTIN
+source binfmt/libbuiltin/Kconfig
+endif
+
endif
config PIC
diff --git a/nuttx/binfmt/Makefile b/nuttx/binfmt/Makefile
index 8ec0d877c..49dcd3d32 100644
--- a/nuttx/binfmt/Makefile
+++ b/nuttx/binfmt/Makefile
@@ -1,7 +1,7 @@
############################################################################
# nxflat/Makefile
#
-# Copyright (C) 2007-2009, 2012 Gregory Nutt. All rights reserved.
+# Copyright (C) 2007-2009, 2012-2013 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <gnutt@nuttx.org>
#
# Redistribution and use in source and binary forms, with or without
@@ -65,6 +65,7 @@ DEPPATH = --dep-path .
include libnxflat$(DELIM)Make.defs
include libelf$(DELIM)Make.defs
+include libbuiltin$(DELIM)Make.defs
BINFMT_AOBJS = $(BINFMT_ASRCS:.S=$(OBJEXT))
BINFMT_COBJS = $(BINFMT_CSRCS:.c=$(OBJEXT))
diff --git a/nuttx/binfmt/binfmt_exec.c b/nuttx/binfmt/binfmt_exec.c
index 60e8d8efd..d878c8cc5 100644
--- a/nuttx/binfmt/binfmt_exec.c
+++ b/nuttx/binfmt/binfmt_exec.c
@@ -1,7 +1,7 @@
/****************************************************************************
* binfmt/binfmt_exec.c
*
- * Copyright (C) 2009 Gregory Nutt. All rights reserved.
+ * Copyright (C) 2009, 2013 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
@@ -40,7 +40,6 @@
#include <nuttx/config.h>
#include <string.h>
-#include <sched.h>
#include <debug.h>
#include <errno.h>
@@ -96,6 +95,8 @@ int exec(FAR const char *filename, FAR const char **argv,
struct binary_s bin;
int ret;
+ /* Load the module into memory */
+
memset(&bin, 0, sizeof(struct binary_s));
bin.filename = filename;
bin.exports = exports;
@@ -108,7 +109,9 @@ int exec(FAR const char *filename, FAR const char **argv,
return ERROR;
}
- ret = exec_module(&bin, 50);
+ /* Then start the module */
+
+ ret = exec_module(&bin);
if (ret < 0)
{
bdbg("ERROR: Failed to execute program '%s'\n", filename);
diff --git a/nuttx/binfmt/binfmt_execmodule.c b/nuttx/binfmt/binfmt_execmodule.c
index 400451c40..afa445abb 100644
--- a/nuttx/binfmt/binfmt_execmodule.c
+++ b/nuttx/binfmt/binfmt_execmodule.c
@@ -1,7 +1,7 @@
/****************************************************************************
* binfmt/binfmt_execmodule.c
*
- * Copyright (C) 2009 Gregory Nutt. All rights reserved.
+ * Copyright (C) 2009, 2013 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
@@ -47,6 +47,7 @@
#include <errno.h>
#include <nuttx/arch.h>
+#include <nuttx/kmalloc.h>
#include <nuttx/binfmt/binfmt.h>
#include "os_internal.h"
@@ -143,7 +144,7 @@ static inline int exec_ctors(FAR const struct binary_s *binp)
*
****************************************************************************/
-int exec_module(FAR const struct binary_s *binp, int priority)
+int exec_module(FAR const struct binary_s *binp)
{
FAR _TCB *tcb;
#ifndef CONFIG_CUSTOM_STACK
@@ -167,7 +168,7 @@ int exec_module(FAR const struct binary_s *binp, int priority)
/* Allocate a TCB for the new task. */
- tcb = (FAR _TCB*)zalloc(sizeof(_TCB));
+ tcb = (FAR _TCB*)kzalloc(sizeof(_TCB));
if (!tcb)
{
err = ENOMEM;
@@ -177,7 +178,7 @@ int exec_module(FAR const struct binary_s *binp, int priority)
/* Allocate the stack for the new task */
#ifndef CONFIG_CUSTOM_STACK
- stack = (FAR uint32_t*)malloc(binp->stacksize);
+ stack = (FAR uint32_t*)kmalloc(binp->stacksize);
if (!tcb)
{
err = ENOMEM;
@@ -186,12 +187,12 @@ int exec_module(FAR const struct binary_s *binp, int priority)
/* Initialize the task */
- ret = task_init(tcb, binp->filename, priority, stack,
+ ret = task_init(tcb, binp->filename, binp->priority, stack,
binp->stacksize, binp->entrypt, binp->argv);
#else
/* Initialize the task */
- ret = task_init(tcb, binp->filename, priority, stack,
+ ret = task_init(tcb, binp->filename, binp->priority, stack,
binp->entrypt, binp->argv);
#endif
if (ret < 0)
@@ -201,6 +202,9 @@ int exec_module(FAR const struct binary_s *binp, int priority)
goto errout_with_stack;
}
+ /* Note that tcb->flags are not modified. 0=normal task */
+ /* tcb->flags |= TCB_FLAG_TTYPE_TASK; */
+
/* Add the D-Space address as the PIC base address. By convention, this
* must be the first allocated address space.
*/
@@ -257,14 +261,14 @@ errout_with_stack:
#ifndef CONFIG_CUSTOM_STACK
tcb->stack_alloc_ptr = NULL;
sched_releasetcb(tcb);
- free(stack);
+ kfree(stack);
#else
sched_releasetcb(tcb);
#endif
goto errout;
errout_with_tcb:
- free(tcb);
+ kfree(tcb);
errout:
errno = err;
bdbg("returning errno: %d\n", err);
diff --git a/nuttx/binfmt/binfmt_loadmodule.c b/nuttx/binfmt/binfmt_loadmodule.c
index 112a6b35b..4f3dc6952 100644
--- a/nuttx/binfmt/binfmt_loadmodule.c
+++ b/nuttx/binfmt/binfmt_loadmodule.c
@@ -67,6 +67,39 @@
****************************************************************************/
/****************************************************************************
+ * Name: load_default_priority
+ *
+ * Description:
+ * Set the default priority of the module to be loaded. This may be
+ * changed (1) by the actions of the binary format's load() method if
+ * the binary format contains priority informaition, or (2) by the user
+ * between calls to load_module() and exec_module().
+ *
+ * Returned Value:
+ * Zero (OK) is returned on success; Otherwise, -1 (ERROR) is returned and
+ * the errno variable is set appropriately.
+ *
+ ****************************************************************************/
+
+static int load_default_priority(FAR struct binary_s *bin)
+{
+ struct sched_param param;
+
+ /* Get the priority of this thread */
+
+ ret = sched_getparam(0, &param);
+ if (ret < 0)
+ {
+ bdbg("ERROR: sched_getparam failed: %d\n", errno);
+ return ERROR;
+ }
+
+ /* Save that as the priority of child thread */
+
+ bin->priority = param.sched_priority;
+}
+
+/****************************************************************************
* Name: load_absmodule
*
* Description:
@@ -145,6 +178,16 @@ int load_module(FAR struct binary_s *bin)
if (bin && bin->filename)
#endif
{
+ /* Set the default priority of the new program. */
+
+ ret = load_default_priority(bin)
+ if (ret < 0)
+ {
+ /* The errno is already set in this case */
+
+ return ERROR;
+ }
+
/* Were we given a relative path? Or an absolute path to the file to
* be loaded? Absolute paths start with '/'.
*/
diff --git a/nuttx/binfmt/builtin.c b/nuttx/binfmt/builtin.c
new file mode 100644
index 000000000..d36cb6326
--- /dev/null
+++ b/nuttx/binfmt/builtin.c
@@ -0,0 +1,196 @@
+/****************************************************************************
+ * 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/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 */
+};
+
+/****************************************************************************
+ * 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;
+ int fd;
+ int index;
+ int ret;
+
+ bvdbg("Loading file: %s\n", binp->filename);
+
+ /* Open the binary file for reading (only) */
+
+ fd = open(filename, O_RDONLY);
+ if (fd < 0)
+ {
+ int errval = errno;
+ bdbg("ERROR: Failed to open binary %s: %d\n", filename, errval);
+ return -errval;
+ }
+
+ /* 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 = errno;
+ bdbg("ERROR: FIOC_FILENAME ioctl failed: %d\n", errval);
+ 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 = errno;
+ bdbg("ERROR: %s is not a builtin application\n", filename);
+ 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.
+ */
+
+ binp->entrypt = g_builtins[index].main;
+ binp->stacksize = g_builtins[index].stacksize;
+ binp->priority = g_builtins[index].priority;
+ return OK;
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: builtin_initialize
+ *
+ * Description:
+ * Builtin support is built unconditionally. However, it order to
+ * use this binary format, this function must be called during system
+ * format in order 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 */
+
+ bvdbg("Registering Builtin Loader\n");
+
+ ret = register_binfmt(&g_builtin_binfmt);
+ if (ret != 0)
+ {
+ bdbg("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_BUILTIN */
+
diff --git a/nuttx/binfmt/elf.c b/nuttx/binfmt/elf.c
index bcebf13ca..9dc59fbdd 100644
--- a/nuttx/binfmt/elf.c
+++ b/nuttx/binfmt/elf.c
@@ -183,7 +183,7 @@ static int elf_loadbinary(struct binary_s *binp)
bvdbg("Loading file: %s\n", binp->filename);
- /* Initialize the xflat library to load the program binary. */
+ /* Initialize the ELF library to load the program binary. */
ret = elf_init(binp->filename, &loadinfo);
elf_dumploadinfo(&loadinfo);
diff --git a/nuttx/binfmt/libbuiltin/Kconfig b/nuttx/binfmt/libbuiltin/Kconfig
new file mode 100644
index 000000000..ae2bf3130
--- /dev/null
+++ b/nuttx/binfmt/libbuiltin/Kconfig
@@ -0,0 +1,4 @@
+#
+# For a description of the syntax of this configuration file,
+# see misc/tools/kconfig-language.txt.
+#
diff --git a/nuttx/binfmt/libbuiltin/Make.defs b/nuttx/binfmt/libbuiltin/Make.defs
new file mode 100644
index 000000000..5eec1acde
--- /dev/null
+++ b/nuttx/binfmt/libbuiltin/Make.defs
@@ -0,0 +1,52 @@
+############################################################################
+# binfmt/libbuiltin/Make.defs
+#
+# Copyright (C) 2013 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.
+#
+############################################################################
+
+ifeq ($(CONFIG_BUILTIN),y)
+
+# Builtin application interfaces
+
+BINFMT_CSRCS += builtin.c
+
+# Builtin library interfaces
+
+BINFMT_CSRCS += libbuiltin_getname.c libbuiltin_isavail.c
+
+# Hook the libbuiltin subdirectory into the build
+
+VPATH += libbuiltin
+SUBDIRS += libbuiltin
+DEPPATH += --dep-path libbuiltin
+
+endif
diff --git a/nuttx/binfmt/libbuiltin/libbuiltin_getname.c b/nuttx/binfmt/libbuiltin/libbuiltin_getname.c
new file mode 100644
index 000000000..01ac024f7
--- /dev/null
+++ b/nuttx/binfmt/libbuiltin/libbuiltin_getname.c
@@ -0,0 +1,92 @@
+/****************************************************************************
+ * binfmt/libbuiltin/libbuiltin_getname.c
+ *
+ * Originally by:
+ *
+ * Copyright (C) 2011 Uros Platise. All rights reserved.
+ * Author: Uros Platise <uros.platise@isotel.eu>
+ *
+ * With subsequent updates, modifications, and general maintenance by:
+ *
+ * Copyright (C) 2012-2013 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 <nuttx/binfmt/builtin.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: builtin_getname
+ *
+ * Description:
+ * Return the name of the application at index in the table of builtin
+ * applications.
+ *
+ ****************************************************************************/
+
+FAR const char *builtin_getname(int index)
+{
+ if (index < 0 || index >= number_builtins())
+ {
+ return NULL;
+ }
+
+ return g_builtins[index].name;
+}
diff --git a/nuttx/binfmt/libbuiltin/libbuiltin_isavail.c b/nuttx/binfmt/libbuiltin/libbuiltin_isavail.c
new file mode 100644
index 000000000..f99a4b81d
--- /dev/null
+++ b/nuttx/binfmt/libbuiltin/libbuiltin_isavail.c
@@ -0,0 +1,102 @@
+/****************************************************************************
+ * binfmt/libbuiltin/libbuiltin_isavail.c
+ *
+ * Originally by:
+ *
+ * Copyright (C) 2011 Uros Platise. All rights reserved.
+ * Author: Uros Platise <uros.platise@isotel.eu>
+ *
+ * With subsequent updates, modifications, and general maintenance by:
+ *
+ * Copyright (C) 2012-2013 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 <string.h>
+#include <limits.h>
+#include <errno.h>
+
+#include <nuttx/binfmt/builtin.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: builtin_isavail
+ *
+ * Description:
+ * Return the index into the table of applications for the applicaiton with
+ * the name 'appname'.
+ *
+ ****************************************************************************/
+
+int builtin_isavail(FAR const char *appname)
+{
+ int i;
+
+ for (i = 0; g_builtins[i].name; i++)
+ {
+ if (!strncmp(g_builtins[i].name, appname, NAME_MAX))
+ {
+ return i;
+ }
+ }
+
+ set_errno(ENOENT);
+ return ERROR;
+}
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