HelenOS sources

root/uspace/lib/label/src/label.c

DEFINITIONS

1. label_open
2. label_create
3. label_close
4. label_destroy
5. label_get_info
6. label_part_first
7. label_part_next
8. label_part_get_info
9. label_part_create
10. label_part_destroy
11. label_pspec_init
12. label_suggest_ptype

/*
 * Copyright (c) 2015 Jiri Svoboda
 * 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 liblabel
 * @{
 */
/**
 * @file Disk label library.
 */

#include <adt/list.h>
#include <errno.h>
#include <label/label.h>
#include <mem.h>
#include <stdlib.h>

#include "dummy.h"
#include "gpt.h"
#include "mbr.h"

static label_ops_t *probe_list[] = {
        &gpt_label_ops,
        &mbr_label_ops,
        &dummy_label_ops,
        NULL
};

errno_t label_open(label_bd_t *bd, label_t **rlabel)
{
        label_ops_t **ops;
        errno_t rc;

        ops = &probe_list[0];
        while (ops[0] != NULL) {
                rc = ops[0]->open(bd, rlabel);
                if (rc == EOK)
                        return EOK;
                ++ops;
        }

        return ENOTSUP;
}

errno_t label_create(label_bd_t *bd, label_type_t ltype, label_t **rlabel)
{
        label_ops_t *ops = NULL;

        switch (ltype) {
        case lt_none:
                return EINVAL;
        case lt_gpt:
                ops = &gpt_label_ops;
                break;
        case lt_mbr:
                ops = &mbr_label_ops;
                break;
        }

        if (ops == NULL)
                return ENOTSUP;

        return ops->create(bd, rlabel);
}

void label_close(label_t *label)
{
        if (label == NULL)
                return;

        label->ops->close(label);
}

errno_t label_destroy(label_t *label)
{
        return label->ops->destroy(label);
}

errno_t label_get_info(label_t *label, label_info_t *linfo)
{
        return label->ops->get_info(label, linfo);
}

label_part_t *label_part_first(label_t *label)
{
        return label->ops->part_first(label);
}

label_part_t *label_part_next(label_part_t *part)
{
        return part->label->ops->part_next(part);
}

void label_part_get_info(label_part_t *part, label_part_info_t *pinfo)
{
        return part->label->ops->part_get_info(part, pinfo);
}

errno_t label_part_create(label_t *label, label_part_spec_t *pspec,
    label_part_t **rpart)
{
        return label->ops->part_create(label, pspec, rpart);
}

errno_t label_part_destroy(label_part_t *part)
{
        return part->label->ops->part_destroy(part);
}

void label_pspec_init(label_part_spec_t *pspec)
{
        memset(pspec, 0, sizeof(label_part_spec_t));
}

errno_t label_suggest_ptype(label_t *label, label_pcnt_t pcnt,
    label_ptype_t *ptype)
{
        return label->ops->suggest_ptype(label, pcnt, ptype);
}

/** @}
 */