1 #ifndef KVM__DISK_IMAGE_H 2 #define KVM__DISK_IMAGE_H 3 4 #include <stdint.h> 5 6 #define SECTOR_SHIFT 9 7 #define SECTOR_SIZE (1UL << SECTOR_SHIFT) 8 9 struct disk_image; 10 11 struct disk_image_operations { 12 int (*read_sector)(struct disk_image *self, uint64_t sector, void *dst, uint32_t dst_len); 13 int (*write_sector)(struct disk_image *self, uint64_t sector, void *src, uint32_t src_len); 14 void (*close)(struct disk_image *self); 15 }; 16 17 struct disk_image { 18 int fd; 19 uint64_t size; 20 struct disk_image_operations *ops; 21 void *priv; 22 }; 23 24 struct disk_image *disk_image__open(const char *filename); 25 struct disk_image *disk_image__new(int fd, uint64_t size, struct disk_image_operations *ops); 26 void disk_image__close(struct disk_image *self); 27 28 static inline int disk_image__read_sector(struct disk_image *self, uint64_t sector, void *dst, uint32_t dst_len) 29 { 30 return self->ops->read_sector(self, sector, dst, dst_len); 31 } 32 33 static inline int disk_image__write_sector(struct disk_image *self, uint64_t sector, void *src, uint32_t src_len) 34 { 35 return self->ops->write_sector(self, sector, src, src_len); 36 } 37 38 #endif /* KVM__DISK_IMAGE_H */ 39