libcsupport/src/base_fs.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /**
0004  *  @file
0005  *
0006  *  @brief Base File System Initialization
0007  *  @ingroup LibIO
0008  */
0009
0010 /*
0011  *  COPYRIGHT (c) 1989-2008.
0012  *  On-Line Applications Research Corporation (OAR).
0013  *
0014  *  Modifications to support reference counting in the file system are
0015  *  Copyright (c) 2012 embedded brains GmbH & Co. KG
0016  *
0017  * Redistribution and use in source and binary forms, with or without
0018  * modification, are permitted provided that the following conditions
0019  * are met:
0020  * 1. Redistributions of source code must retain the above copyright
0021  *    notice, this list of conditions and the following disclaimer.
0022  * 2. Redistributions in binary form must reproduce the above copyright
0023  *    notice, this list of conditions and the following disclaimer in the
0024  *    documentation and/or other materials provided with the distribution.
0025  *
0026  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0027  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0028  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0029  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0030  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0031  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0032  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0033  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0034  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0035  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0036  * POSSIBILITY OF SUCH DAMAGE.
0037  */
0038
0039 #ifdef HAVE_CONFIG_H
0040 #include "config.h"
0041 #endif
0042
0043 #include <rtems.h>
0044 #include <rtems/libio.h>
0045 #include <rtems/libio_.h>
0046
0047 /*
0048  *  Default mode for created files.
0049  */
0050
0051 void rtems_filesystem_initialize( void )
0052 {
0053   int rv = 0;
0054   const rtems_filesystem_mount_configuration *root_config =
0055     &rtems_filesystem_root_configuration;
0056
0057   rv = mount(
0058     root_config->source,
0059     root_config->target,
0060     root_config->filesystemtype,
0061     root_config->options,
0062     root_config->data
0063   );
0064   if ( rv != 0 )
0065     rtems_fatal_error_occurred( 0xABCD0002 );
0066
0067   /*
0068    *  Traditionally RTEMS devices are under "/dev" so install this directory.
0069    *
0070    *  If the mkdir() fails, we can't print anything so just fatal error.
0071    */
0072
0073   rv = mkdir( "/dev", S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH );
0074   if ( rv != 0 )
0075     rtems_fatal_error_occurred( 0xABCD0003 );
0076
0077   /*
0078    *  You can't mount another filesystem properly until the mount point
0079    *  it will be mounted onto is created.  Moreover, if it is going to
0080    *  use a device, then it is REALLY unfair to attempt this
0081    *  before device drivers are initialized.  So we return via a base
0082    *  filesystem image and nothing auto-mounted at this point.
0083    */
0084 }