source: mainline/uspace/lib/ext4/libext4_filesystem.c@ 01ab41b

/*
 * Copyright (c) 2011 Frantisek Princ
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - 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.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
 */

/** @addtogroup libext4
 * @{
 */ 

/**
 * @file        libext4_filesystem.c
 * @brief       TODO
 */

#include <errno.h>
#include <malloc.h>
#include "libext4_filesystem.h"

/**
 * TODO doxy
 */
int ext4_filesystem_init(ext4_filesystem_t *fs, service_id_t service_id)
{

        int rc;
        ext4_superblock_t *temp_superblock;
        size_t block_size;

        fs->device = service_id;

        // TODO block size !!!
        rc = block_init(EXCHANGE_SERIALIZE, fs->device, 2048);
        if (rc != EOK) {
                return rc;
        }

        rc = ext4_superblock_read_direct(fs->device, &temp_superblock);
        if (rc != EOK) {
                block_fini(fs->device);
                return rc;
        }

        block_size = ext4_superblock_get_block_size(temp_superblock);

        if (block_size > EXT4_MAX_BLOCK_SIZE) {
                block_fini(fs->device);
                return ENOTSUP;
        }

        rc = block_cache_init(service_id, block_size, 0, CACHE_MODE_WT);
        if (rc != EOK) {
                block_fini(fs->device);
                return rc;
        }

        fs->superblock = temp_superblock;


        // TODO
        return EOK;
}

/**
 * TODO doxy
 */
int ext4_filesystem_check_sanity(ext4_filesystem_t *fs)
{
        int rc;

        rc = ext4_superblock_check_sanity(fs->superblock);
        if (rc != EOK) {
                return rc;
        }

        return EOK;
}

/**
 * TODO doxy
 */
int ext4_filesystem_check_flags(ext4_filesystem_t *fs, bool *o_read_only)
{
        // TODO
        return EOK;
}

/**
 * TODO doxy
 */
void ext4_filesystem_fini(ext4_filesystem_t *fs)
{
        free(fs->superblock);
        block_fini(fs->device);
}


/**
 * @}
 */