[ Pobierz całość w formacie PDF ]
.Much of the cleanup from the old partition tables should have already beendone *//* This function will re-read the partition tables for a given device,and set things back up again.There are some important caveats,however.You must ensure that no one is using the device, and no onecan start using the device while this function is being executed.*/void resetup_one_dev(struct gendisk *dev, int drive){int i;int start = drive<<dev->minor_shift;int j = start + dev->max_p;int major = dev->major << 8;current_minor = 1+(drive<<dev->minor_shift);check_partition(dev, major+(drive<<dev->minor_shift));for (i=start ; i < j ; i++)dev->sizes[i] = dev->part[i].nr_sects >> (BLOCK_SIZE_BITS - 9);}static void setup_dev(struct gendisk *dev){int i;int j = dev->max_nr * dev->max_p;int major = dev->major << 8;int drive;for (i = 0 ; i < j; i++) {dev->part[i].start_sect = 0;dev->part[i].nr_sects = 0;}dev->init();for (drive=0 ; drive<dev->nr_real ; drive++) {current_minor = 1+(drive<<dev->minor_shift);check_partition(dev, major+(drive<<dev->minor_shift));}for (i=0 ; i < j ; i++)dev->sizes[i] = dev->part[i].nr_sects >> (BLOCK_SIZE_BITS - 9);blk_size[dev->major] = dev->sizes;}void device_setup(void){struct gendisk *p;int nr=0;for (p = gendisk_head ; p ; p=p->next) {setup_dev(p);nr += p->nr_real;}if (ramdisk_size)rd_load();}
[ Pobierz całość w formacie PDF ]