forked from Imagelibrary/rtems
132 lines
3.5 KiB
C
132 lines
3.5 KiB
C
/* 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;
|
|
}
|