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/**
* @file
*
* @brief Init Routine for MSDOS
* @ingroup libfs
*/
/*
* Copyright (C) 2001 OKTET Ltd., St.-Petersburg, Russia
* Author: Eugeny S. Mints <Eugeny.Mints@oktet.ru>
*
* Modifications to support reference counting in the file system are
* Copyright (c) 2012 embedded brains GmbH.
*
* Modifications to support UTF-8 in the file system are
* Copyright (c) 2013 embedded brains GmbH.
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/libio_.h>
#include "dosfs.h"
#include "msdos.h"
static int msdos_clone_node_info(rtems_filesystem_location_info_t *loc)
{
fat_file_fd_t *fat_fd = loc->node_access;
return fat_file_reopen(fat_fd);
}
static int msdos_utime(
const rtems_filesystem_location_info_t *loc,
time_t actime,
time_t modtime
)
{
fat_file_fd_t *fat_fd = loc->node_access;
if (actime != modtime)
rtems_set_errno_and_return_minus_one( ENOTSUP );
fat_file_set_mtime(fat_fd, modtime);
return RC_OK;
}
const rtems_filesystem_operations_table msdos_ops = {
.lock_h = msdos_lock,
.unlock_h = msdos_unlock,
.eval_path_h = msdos_eval_path,
.link_h = rtems_filesystem_default_link,
.are_nodes_equal_h = rtems_filesystem_default_are_nodes_equal,
.mknod_h = msdos_mknod,
.rmnod_h = msdos_rmnod,
.fchmod_h = rtems_filesystem_default_fchmod,
.chown_h = rtems_filesystem_default_chown,
.clonenod_h = msdos_clone_node_info,
.freenod_h = msdos_free_node_info,
.mount_h = rtems_filesystem_default_mount,
.unmount_h = rtems_filesystem_default_unmount,
.fsunmount_me_h = msdos_shut_down,
.utime_h = msdos_utime,
.symlink_h = rtems_filesystem_default_symlink,
.readlink_h = rtems_filesystem_default_readlink,
.rename_h = msdos_rename,
.statvfs_h = msdos_statvfs
};
void msdos_lock(const rtems_filesystem_mount_table_entry_t *mt_entry)
{
msdos_fs_info_t *fs_info = mt_entry->fs_info;
rtems_status_code sc = rtems_semaphore_obtain(
fs_info->vol_sema,
RTEMS_WAIT,
RTEMS_NO_TIMEOUT
);
if (sc != RTEMS_SUCCESSFUL) {
rtems_fatal_error_occurred(0xdeadbeef);
}
}
void msdos_unlock(const rtems_filesystem_mount_table_entry_t *mt_entry)
{
msdos_fs_info_t *fs_info = mt_entry->fs_info;
rtems_status_code sc = rtems_semaphore_release(fs_info->vol_sema);
if (sc != RTEMS_SUCCESSFUL) {
rtems_fatal_error_occurred(0xdeadbeef);
}
}
/* msdos_initialize --
* MSDOS filesystem initialization. Called when mounting an
* MSDOS filesystem.
*
* PARAMETERS:
* temp_mt_entry - mount table entry
*
* RETURNS:
* RC_OK on success, or -1 if error occured (errno set apropriately).
*
*/
int rtems_dosfs_initialize(
rtems_filesystem_mount_table_entry_t *mt_entry,
const void *data
)
{
int rc = 0;
const rtems_dosfs_mount_options *mount_options = data;
rtems_dosfs_convert_control *converter;
if (mount_options == NULL || mount_options->converter == NULL) {
converter = rtems_dosfs_create_default_converter();
} else {
converter = mount_options->converter;
}
if (converter != NULL) {
rc = msdos_initialize_support(mt_entry,
&msdos_ops,
&msdos_file_handlers,
&msdos_dir_handlers,
converter);
} else {
errno = ENOMEM;
rc = -1;
}
return rc;
}
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