93 lines
3.5 KiB
C
93 lines
3.5 KiB
C
/****************************************************************************
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* libs/libc/builtin/lib_builtin_isavail.c
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*
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* Originally by:
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*
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* Copyright (C) 2011 Uros Platise. All rights reserved.
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* Author: Uros Platise <uros.platise@isotel.eu>
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*
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* With subsequent updates, modifications, and general maintenance by:
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*
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* Copyright (C) 2012-2013, 2019 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <string.h>
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#include <limits.h>
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#include <errno.h>
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#include <nuttx/lib/builtin.h>
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: builtin_isavail
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*
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* Description:
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* Checks for availability of an application named 'appname' registered
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* during compile time and, if available, returns the index into the table
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* of built-in applications.
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*
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* Input Parameters:
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* filename - Name of the linked-in binary to be started.
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*
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* Returned Value:
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* This is an internal function, used by by the NuttX binfmt logic and
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* by the application built-in logic. It returns a non-negative index to
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* the application entry in the table of built-in applications on success
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* or a negated errno value in the event of a failure.
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*
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****************************************************************************/
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int builtin_isavail(FAR const char *appname)
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{
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FAR const char *name;
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int i;
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for (i = 0; (name = builtin_getname(i)) != NULL; i++)
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{
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if (strncmp(name, appname, NAME_MAX) == 0)
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{
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return i;
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}
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}
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return -ENOENT;
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}
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