static struct ramdisk_struct *create_ramdisk(const unsigned int disk_size,
const unsigned int lba_shift)
{
struct ramdisk_struct *ramdiskp;
unsigned int aligned_size;
if (lba_shift < DEFAULT_LBA_SHIFT)
return NULL;
/* round down disk size and see if we can still create a ramdisk */
aligned_size = disk_size & (~(lba_shift-1));
if (aligned_size == 0)
return NULL;
ramdiskp = malloc(sizeof*ramdiskp);
if (!ramdiskp)
return NULL;
if (raw_initialize_ramdisk(ramdiskp, aligned_size) < 0) {
destroy_ramdisk(ramdiskp);
return NULL;
}
ramdiskp->lba_shift = lba_shift;
ramdiskp->lba_count = aligned_size >> lba_shift;
return ramdiskp;
}
int main(void)
{
struct ramdisk_struct *simulated_disk;
simulated_disk = create_ramdisk(RAMDISK_SIZE, DEFAULT_LBA_SHIFT);
if (!simulated_disk) {
fprintf(stderr, "error initializing ramdisk");
return -1;
}
start_simulation(simulated_disk);
destroy_ramdisk(simulated_disk);
return 0;
}
static void __exit cleanup_ramdisk(void)
{
printk("Remove Ramdisk module\n");
destroy_ramdisk();
}