/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup rtl
*
* @brief RTEMS Run-Time Linker Error
*/
/*
* COPYRIGHT (c) 2012-2013 Chris Johns <chrisj@rtems.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.
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <errno.h>
#include <fcntl.h>
#include <inttypes.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <rtems/libio_.h>
#include <rtems/rtl/rtl.h>
#include "rtl-find-file.h"
#include "rtl-error.h"
#include "rtl-string.h"
#include <rtems/rtl/rtl-trace.h>
#if WAF_BUILD
#define rtems_filesystem_is_delimiter rtems_filesystem_is_separator
#endif
bool
rtems_rtl_find_file (const char* name,
const char* paths,
const char** file_name,
size_t* size)
{
struct stat sb;
*file_name = NULL;
*size = 0;
if (rtems_filesystem_is_delimiter (name[0]) || (name[0] == '.'))
{
if (stat (name, &sb) == 0)
*file_name = rtems_rtl_strdup (name);
}
else if (paths)
{
const char* start;
const char* end;
int len;
char* fname;
start = paths;
end = start + strlen (paths);
len = strlen (name);
while (!*file_name && (start != end))
{
const char* delimiter = strchr (start, ':');
if (delimiter == NULL)
delimiter = end;
/*
* Allocate the path fragment, separator, name, terminating nul. Form the
* path then see if the stat call works.
*/
fname = rtems_rtl_alloc_new (RTEMS_RTL_ALLOC_OBJECT,
(delimiter - start) + 1 + len + 1, true);
if (!fname)
{
rtems_rtl_set_error (ENOMEM, "no memory searching for file");
return false;
}
memcpy (fname, start, delimiter - start);
fname[delimiter - start] = '/';
memcpy (fname + (delimiter - start) + 1, name, len);
if (rtems_rtl_trace (RTEMS_RTL_TRACE_LOAD))
printf ("rtl: find-file: path: %s\n", fname);
if (stat (fname, &sb) < 0)
rtems_rtl_alloc_del (RTEMS_RTL_ALLOC_OBJECT, fname);
else
*file_name = fname;
start = delimiter;
if (start != end)
++start;
}
}
if (!*file_name)
return false;
*size = sb.st_size;
return true;
}
