source: mainline/uspace/app/hdisk/func_mbr.c@ 1c8bfe8

/*
 * Copyright (c) 2012, 2013 Dominik Taborsky
 * 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 hdisk
 * @{
 */
/** @file
 */

#include <stdio.h>
#include <errno.h>
#include <str_error.h>
#include <sys/types.h>

#include "func_mbr.h"
#include "input.h"

static int set_mbr_partition(tinput_t *in, mbr_part_t *p, unsigned int alignment);

int construct_mbr_label(label_t *this)
{
        this->layout = LYT_MBR;
        this->alignment = 1;
        
        this->add_part      = add_mbr_part;
        this->delete_part   = delete_mbr_part;
        this->destroy_label = destroy_mbr_label;
        this->new_label     = new_mbr_label;
        this->print_parts   = print_mbr_parts;
        this->read_parts    = read_mbr_parts;
        this->write_parts   = write_mbr_parts;
        this->extra_funcs   = extra_mbr_funcs;
        
        return this->new_label(this);
}

int add_mbr_part(label_t *this, tinput_t *in)
{
        int rc;
        
        mbr_part_t *part = mbr_alloc_partition();
        
        set_mbr_partition(in, part, this->alignment);
        
        rc = mbr_add_partition(this->data.mbr, part);
        if (rc != ERR_OK) {
                printf("Error adding partition: %d\n", rc);
        }
        
        return EOK;
}

int delete_mbr_part(label_t *this, tinput_t *in)
{
        int rc;
        size_t idx;
        
        printf("Number of the partition to delete (counted from 0): ");
        idx = get_input_size_t(in);
        
        if (idx == 0 && errno != EOK)
                return errno;
        
        rc = mbr_remove_partition(this->data.mbr, idx);
        if(rc != EOK) {
                printf("Error: something.\n");
        }
        
        return EOK;
}

int destroy_mbr_label(label_t *this)
{
        mbr_free_label(this->data.mbr);
        return EOK;
}

int new_mbr_label(label_t *this)
{
        this->data.mbr = mbr_alloc_label();
        if (this->data.mbr == NULL)
                return ENOMEM;
        else
                return EOK;
}

/** Print current partition scheme */
int print_mbr_parts(label_t *this)
{
        int num = 0;
        
        printf("Current partition scheme (MBR):\n");
        //printf("\t\tBootable:\tStart:\tEnd:\tLength:\tType:\n");
        printf("\t\t%10s  %10s %10s %10s %7s\n", "Bootable:", "Start:", "End:", "Length:", "Type:");
        
        mbr_part_t *it;
        //mbr_part_foreach(data->mbr, it) {
        
        for (it = mbr_get_first_partition(this->data.mbr); it != NULL;
             it = mbr_get_next_partition(this->data.mbr, it), ++num) {
                if (it->type == PT_UNUSED)
                        continue;
                
                printf("\tP%d:\t", num);
                if (mbr_get_flag(it, ST_BOOT))
                        printf("*");
                else
                        printf(" ");
                
                printf("\t%10u %10u %10u %7u\n", it->start_addr, it->start_addr + it->length, it->length, it->type);
                
                //++num;
        }
        
        printf("%d partitions found.\n", num);
        
        return EOK;
}

int read_mbr_parts(label_t *this, service_id_t dev_handle)
{
        int rc;
        rc = mbr_read_mbr(this->data.mbr, dev_handle);
        if (rc != EOK)
                return rc;
        
        if (!mbr_is_mbr(this->data.mbr))
                return EINVAL;
        
        rc = mbr_read_partitions(this->data.mbr);
        if (rc != EOK)
                return rc;
        
        return EOK;
}

int write_mbr_parts(label_t *this, service_id_t dev_handle)
{
        int rc = mbr_write_partitions(this->data.mbr, dev_handle);
        if (rc != EOK) {
                printf("Error occured during writing: ERR: %d: %s\n", rc, str_error(rc));
        }
        
        return rc;
}

int extra_mbr_funcs(label_t *this, tinput_t *in, service_id_t dev_handle)
{
        printf("Not implemented.\n");
        return EOK;
}

static int set_mbr_partition(tinput_t *in, mbr_part_t *p, unsigned int alignment)
{
        int c;
        uint8_t type;
        
        printf("Primary (p) or logical (l): ");
        c = getchar();
        printf("%c\n", c);

        switch(c) {
                case 'p':
                        mbr_set_flag(p, ST_LOGIC, false);
                        break;
                case 'l':
                        mbr_set_flag(p, ST_LOGIC, true);
                        break;
                default:
                        printf("Invalid type. Cancelled.\n");
                        return EINVAL;
        }
        
        printf("ST_LOGIC: %d, %hd\n", mbr_get_flag(p, ST_LOGIC), p->status);
        
        printf("Set type (0-255): ");
        type = get_input_uint8(in);
        if (type == 0 && errno != EOK)
                return errno;

        ///TODO: there can only be one boolabel partition; let's do it just like fdisk
        printf("Bootable? (y/n): ");
        c = getchar();
        if (c != 'y' && c != 'Y' && c != 'n' && c != 'N') {
                printf("Invalid value. Cancelled.");
                return EINVAL;
        }
        printf("%c\n", c);
        mbr_set_flag(p, ST_BOOT, (c == 'y' || c == 'Y') ? true : false);


        uint32_t sa, ea;

        printf("Set starting address (number): ");
        sa = get_input_uint32(in);
        if (sa == 0 && errno != EOK)
                return errno;
        
        if (alignment != 0 && alignment != 1) {
                sa = mbr_get_next_aligned(sa, alignment);
                printf("Starting address was aligned to %u.\n", sa);
        }

        printf("Set end addres (number): ");
        ea = get_input_uint32(in);
        if (ea == 0 && errno != EOK)
                return errno;
        
        /* Align ending address, not in use */
        /*if (alignment != 0 && alignment != 1) {
                ea = mbr_get_next_aligned(ea, alignment) - alignment;
                printf("Starting address was aligned to %u.\n", ea);
        }*/
        
        if(ea < sa) {
                printf("Invalid value. Canceled.\n");
                return EINVAL;
        }

        p->type = type;
        p->start_addr = sa;
        p->length = ea - sa;

        return EOK;
}