19f532d00SPekka Enberg #ifndef KVM__DISK_IMAGE_H 29f532d00SPekka Enberg #define KVM__DISK_IMAGE_H 39f532d00SPekka Enberg 49f532d00SPekka Enberg #include <stdint.h> 59ac38fe1SSasha Levin #include <stdbool.h> 69f532d00SPekka Enberg 72924f993SAsias He #define SECTOR_SHIFT 9 82924f993SAsias He #define SECTOR_SIZE (1UL << SECTOR_SHIFT) 92924f993SAsias He 10499f3bedSPekka Enberg struct disk_image; 11499f3bedSPekka Enberg 12499f3bedSPekka Enberg struct disk_image_operations { 13499f3bedSPekka Enberg int (*read_sector)(struct disk_image *self, uint64_t sector, void *dst, uint32_t dst_len); 14499f3bedSPekka Enberg int (*write_sector)(struct disk_image *self, uint64_t sector, void *src, uint32_t src_len); 15499f3bedSPekka Enberg void (*close)(struct disk_image *self); 16499f3bedSPekka Enberg }; 17499f3bedSPekka Enberg 189f532d00SPekka Enberg struct disk_image { 199f532d00SPekka Enberg int fd; 209f532d00SPekka Enberg uint64_t size; 21499f3bedSPekka Enberg struct disk_image_operations *ops; 22499f3bedSPekka Enberg void *priv; 239f532d00SPekka Enberg }; 249f532d00SPekka Enberg 259ac38fe1SSasha Levin struct disk_image *disk_image__open(const char *filename, bool readonly); 26*f4ff38dfSPrasad Joshi struct disk_image *disk_image__new(int fd, uint64_t size, struct disk_image_operations *ops); 27*f4ff38dfSPrasad Joshi struct disk_image *disk_image__new_readonly(int fd, uint64_t size, struct disk_image_operations *ops); 289f532d00SPekka Enberg void disk_image__close(struct disk_image *self); 29499f3bedSPekka Enberg 30499f3bedSPekka Enberg static inline int disk_image__read_sector(struct disk_image *self, uint64_t sector, void *dst, uint32_t dst_len) 31499f3bedSPekka Enberg { 32499f3bedSPekka Enberg return self->ops->read_sector(self, sector, dst, dst_len); 33499f3bedSPekka Enberg } 34499f3bedSPekka Enberg 35499f3bedSPekka Enberg static inline int disk_image__write_sector(struct disk_image *self, uint64_t sector, void *src, uint32_t src_len) 36499f3bedSPekka Enberg { 37499f3bedSPekka Enberg return self->ops->write_sector(self, sector, src, src_len); 38499f3bedSPekka Enberg } 399f532d00SPekka Enberg 409f532d00SPekka Enberg #endif /* KVM__DISK_IMAGE_H */ 41