src/imfs/imfs_initsupp.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /**
0004  * @file
0005  *
0006  * @ingroup IMFS
0007  *
0008  * @brief IMFS Node Support
0009  */
0010
0011 /*
0012  *  COPYRIGHT (c) 1989-2010.
0013  *  On-Line Applications Research Corporation (OAR).
0014  *
0015  * Redistribution and use in source and binary forms, with or without
0016  * modification, are permitted provided that the following conditions
0017  * are met:
0018  * 1. Redistributions of source code must retain the above copyright
0019  *    notice, this list of conditions and the following disclaimer.
0020  * 2. Redistributions in binary form must reproduce the above copyright
0021  *    notice, this list of conditions and the following disclaimer in the
0022  *    documentation and/or other materials provided with the distribution.
0023  *
0024  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0025  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0026  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0027  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0028  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0029  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0030  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0031  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0032  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0033  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0034  * POSSIBILITY OF SUCH DAMAGE.
0035  */
0036
0037 #ifdef HAVE_CONFIG_H
0038 #include "config.h"
0039 #endif
0040
0041 #include <rtems/imfs.h>
0042
0043 #include <errno.h>
0044
0045 int IMFS_initialize_support(
0046   rtems_filesystem_mount_table_entry_t *mt_entry,
0047   const void                           *data
0048 )
0049 {
0050   const IMFS_mount_data   *mount_data;
0051   IMFS_fs_info_t          *fs_info;
0052   const IMFS_node_control *node_control;
0053   IMFS_jnode_t            *root_node;
0054
0055   mount_data = data;
0056
0057   fs_info = mount_data->fs_info;
0058   fs_info->mknod_controls = mount_data->mknod_controls;
0059   node_control = &mount_data->mknod_controls->directory->node_control;
0060   root_node = &fs_info->Root_directory.Node;
0061
0062   mt_entry->fs_info = fs_info;
0063   mt_entry->ops = mount_data->ops;
0064   mt_entry->pathconf_limits_and_options = &IMFS_LIMITS_AND_OPTIONS;
0065   mt_entry->mt_fs_root->location.node_access = root_node;
0066   mt_entry->mt_fs_root->location.handlers = node_control->handlers;
0067
0068   root_node = IMFS_initialize_node(
0069     root_node,
0070     node_control,
0071     "",
0072     0,
0073     (S_IFDIR | 0755),
0074     NULL
0075   );
0076   IMFS_assert( root_node != NULL );
0077
0078   return 0;
0079 }
0080
0081 static IMFS_jnode_t *IMFS_node_initialize_enosys(
0082   IMFS_jnode_t *node,
0083   void *arg
0084 )
0085 {
0086   errno = ENOSYS;
0087
0088   return NULL;
0089 }
0090
0091 IMFS_jnode_t *IMFS_node_initialize_default(
0092   IMFS_jnode_t *node,
0093   void *arg
0094 )
0095 {
0096   return node;
0097 }
0098
0099 const IMFS_mknod_control IMFS_mknod_control_enosys = {
0100   { .node_initialize = IMFS_node_initialize_enosys },
0101   .node_size = sizeof( IMFS_jnode_t )
0102 };