1 #ifndef KVM__DISK_IMAGE_H 2 #define KVM__DISK_IMAGE_H 3 4 #include <stdint.h> 5 #include <stdbool.h> 6 7 #define SECTOR_SHIFT 9 8 #define SECTOR_SIZE (1UL << SECTOR_SHIFT) 9 10 struct disk_image; 11 12 struct disk_image_operations { 13 int (*read_sector)(struct disk_image *self, uint64_t sector, void *dst, uint32_t dst_len); 14 int (*write_sector)(struct disk_image *self, uint64_t sector, void *src, uint32_t src_len); 15 void (*close)(struct disk_image *self); 16 }; 17 18 struct disk_image { 19 int fd; 20 uint64_t size; 21 struct disk_image_operations *ops; 22 void *priv; 23 }; 24 25 struct disk_image *disk_image__open(const char *filename, bool readonly); 26 struct disk_image *disk_image__new(int fd, uint64_t size, struct disk_image_operations *ops, bool readonly); 27 void disk_image__close(struct disk_image *self); 28 29 static inline int disk_image__read_sector(struct disk_image *self, uint64_t sector, void *dst, uint32_t dst_len) 30 { 31 return self->ops->read_sector(self, sector, dst, dst_len); 32 } 33 34 static inline int disk_image__write_sector(struct disk_image *self, uint64_t sector, void *src, uint32_t src_len) 35 { 36 return self->ops->write_sector(self, sector, src, src_len); 37 } 38 39 #endif /* KVM__DISK_IMAGE_H */ 40