src/imfs/imfs_init.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /**
0004  * @file
0005  *
0006  * @ingroup LibFSIMFS
0007  *
0008  * @brief IMFS initialization.
0009  */
0010
0011 /*
0012  * COPYRIGHT (C) 1989, 2021 On-Line Applications Research Corporation (OAR).
0013  *
0014  * Redistribution and use in source and binary forms, with or without
0015  * modification, are permitted provided that the following conditions
0016  * are met:
0017  * 1. Redistributions of source code must retain the above copyright
0018  *    notice, this list of conditions and the following disclaimer.
0019  * 2. Redistributions in binary form must reproduce the above copyright
0020  *    notice, this list of conditions and the following disclaimer in the
0021  *    documentation and/or other materials provided with the distribution.
0022  *
0023  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0024  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0025  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0026  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0027  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0028  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0029  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0030  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0031  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0032  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0033  * POSSIBILITY OF SUCH DAMAGE.
0034  */
0035
0036 #ifdef HAVE_CONFIG_H
0037 #include "config.h"
0038 #endif
0039
0040 #include <rtems/imfs.h>
0041
0042 #include <stdlib.h>
0043
0044 #include <rtems/seterr.h>
0045
0046 static const rtems_filesystem_operations_table IMFS_ops = {
0047   .lock_h = rtems_filesystem_default_lock,
0048   .unlock_h = rtems_filesystem_default_unlock,
0049   .eval_path_h = IMFS_eval_path,
0050   .link_h = IMFS_link,
0051   .are_nodes_equal_h = rtems_filesystem_default_are_nodes_equal,
0052   .mknod_h = IMFS_mknod,
0053   .rmnod_h = IMFS_rmnod,
0054   .fchmod_h = IMFS_fchmod,
0055   .chown_h = IMFS_chown,
0056   .clonenod_h = IMFS_node_clone,
0057   .freenod_h = IMFS_node_free,
0058   .mount_h = IMFS_mount,
0059   .unmount_h = IMFS_unmount,
0060   .fsunmount_me_h = IMFS_fsunmount,
0061   .utimens_h = IMFS_utimens,
0062   .symlink_h = IMFS_symlink,
0063   .readlink_h = IMFS_readlink,
0064   .rename_h = IMFS_rename,
0065   .statvfs_h = rtems_filesystem_default_statvfs
0066 };
0067
0068 static const IMFS_mknod_controls IMFS_default_mknod_controls = {
0069   .directory = &IMFS_mknod_control_dir_default,
0070   .device = &IMFS_mknod_control_device,
0071   .file = &IMFS_mknod_control_memfile,
0072   .fifo = &IMFS_mknod_control_enosys
0073 };
0074
0075 int IMFS_initialize(
0076   rtems_filesystem_mount_table_entry_t *mt_entry,
0077   const void                           *data
0078 )
0079 {
0080   IMFS_fs_info_t *fs_info = calloc( 1, sizeof( *fs_info ) );
0081   IMFS_mount_data mount_data = {
0082     .fs_info = fs_info,
0083     .ops = &IMFS_ops,
0084     .mknod_controls = &IMFS_default_mknod_controls
0085   };
0086
0087   if ( fs_info == NULL ) {
0088     rtems_set_errno_and_return_minus_one( ENOMEM );
0089   }
0090
0091   return IMFS_initialize_support( mt_entry, &mount_data );
0092 }