mirror of https://github.com/vivier/EMILE.git
66 lines
1.2 KiB
C
66 lines
1.2 KiB
C
/*
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*
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* (c) 2004-2007 Laurent Vivier <Laurent@Vivier.EU>
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*
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <string.h>
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#include "libmap.h"
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map_t* map_open(device_io_t *device)
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{
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map_t *map;
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int ret;
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int blocksize = device->get_blocksize(device->data);
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ASSERT_DD(printf("INTERNAL ERROR: Bad Block 0 size structure\n");
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return NULL;)
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ASSERT_P(printf("INTERNAL ERROR: Bad Partition size structure\n");
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return NULL;)
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if (blocksize > MAP_BLOCKSIZE)
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{
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printf("device block size too big (%d)\n", blocksize);
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return NULL;
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}
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map = (map_t*)malloc(sizeof(map_t));
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if (map == NULL)
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return NULL;
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map->device = malloc(sizeof(device_io_t));
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if (map->device == NULL)
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{
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free(map);
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return NULL;
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}
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memcpy(map->device, device, sizeof(device_io_t));
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ret = map->device->read_sector(map->device->data, 0,
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&map->drivers, blocksize);
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if (ret == -1)
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{
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printf("Cannot read block 0\n");
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free(map);
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return NULL;
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}
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ret = map->device->read_sector(map->device->data, 1,
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&map->partition, blocksize);
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if (ret == -1)
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{
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printf("Cannot read first partition descriptor\n");
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free(map);
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return NULL;
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}
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map->current = 0;
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return map;
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}
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