nuttx/libs/libc/builtin/lib_builtin_isavail.c
Jiuzhu Dong 142406bd2a builtin: execute app whose filename is longer than NAME_MAX
Change-Id: I0d8ed47c0391e65467cc8a2f4f499b0fbfa8c122
Signed-off-by: Jiuzhu Dong <dongjiuzhu1@xiaomi.com>
2021-02-24 05:21:39 -08:00

93 lines
3.4 KiB
C

/****************************************************************************
* libs/libc/builtin/lib_builtin_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, 2019 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/lib/builtin.h>
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: builtin_isavail
*
* Description:
* Checks for availability of an application named 'appname' registered
* during compile time and, if available, returns the index into the table
* of built-in applications.
*
* Input Parameters:
* filename - Name of the linked-in binary to be started.
*
* Returned Value:
* This is an internal function, used by by the NuttX binfmt logic and
* by the application built-in logic. It returns a non-negative index to
* the application entry in the table of built-in applications on success
* or a negated errno value in the event of a failure.
*
****************************************************************************/
int builtin_isavail(FAR const char *appname)
{
FAR const char *name;
int i;
for (i = 0; (name = builtin_getname(i)) != NULL; i++)
{
if (strcmp(name, appname) == 0)
{
return i;
}
}
return -ENOENT;
}