19f532d00SPekka Enberg #ifndef KVM__DISK_IMAGE_H 29f532d00SPekka Enberg #define KVM__DISK_IMAGE_H 39f532d00SPekka Enberg 4c9310ac4SAsias He #include "kvm/read-write.h" 5c9310ac4SAsias He #include "kvm/util.h" 6c9310ac4SAsias He 73fdf659dSSasha Levin #include <linux/types.h> 8c9310ac4SAsias He #include <linux/fs.h> /* for BLKGETSIZE64 */ 9c9310ac4SAsias He #include <sys/ioctl.h> 10c9310ac4SAsias He #include <sys/types.h> 11c9310ac4SAsias He #include <sys/mman.h> 12c9310ac4SAsias He #include <sys/stat.h> 139ac38fe1SSasha Levin #include <stdbool.h> 1470b53f25SSasha Levin #include <sys/uio.h> 15c9310ac4SAsias He #include <stdbool.h> 16c9310ac4SAsias He #include <stddef.h> 17c9310ac4SAsias He #include <stdlib.h> 1829084a74SPrasad Joshi #include <unistd.h> 19c9310ac4SAsias He #include <fcntl.h> 209f532d00SPekka Enberg 212924f993SAsias He #define SECTOR_SHIFT 9 222924f993SAsias He #define SECTOR_SIZE (1UL << SECTOR_SHIFT) 232924f993SAsias He 24*7d22135fSAsias He #define DISK_IMAGE_MMAP 0 25*7d22135fSAsias He #define DISK_IMAGE_NOMMAP 1 26*7d22135fSAsias He 27499f3bedSPekka Enberg struct disk_image; 28499f3bedSPekka Enberg 29499f3bedSPekka Enberg struct disk_image_operations { 3043835ac9SSasha Levin int (*read_sector)(struct disk_image *disk, u64 sector, void *dst, u32 dst_len); 3143835ac9SSasha Levin int (*write_sector)(struct disk_image *disk, u64 sector, void *src, u32 src_len); 3243835ac9SSasha Levin ssize_t (*read_sector_iov)(struct disk_image *disk, u64 sector, const struct iovec *iov, int iovcount); 3343835ac9SSasha Levin ssize_t (*write_sector_iov)(struct disk_image *disk, u64 sector, const struct iovec *iov, int iovcount); 3429084a74SPrasad Joshi int (*flush)(struct disk_image *disk); 3543835ac9SSasha Levin void (*close)(struct disk_image *disk); 36499f3bedSPekka Enberg }; 37499f3bedSPekka Enberg 389f532d00SPekka Enberg struct disk_image { 399f532d00SPekka Enberg int fd; 403fdf659dSSasha Levin u64 size; 41499f3bedSPekka Enberg struct disk_image_operations *ops; 42499f3bedSPekka Enberg void *priv; 439f532d00SPekka Enberg }; 449f532d00SPekka Enberg 459ac38fe1SSasha Levin struct disk_image *disk_image__open(const char *filename, bool readonly); 46*7d22135fSAsias He struct disk_image *disk_image__new(int fd, u64 size, struct disk_image_operations *ops, int mmap); 4743835ac9SSasha Levin void disk_image__close(struct disk_image *disk); 48499f3bedSPekka Enberg 49b8861977SAsias He ssize_t disk_image__read(struct disk_image *disk, u64 sector, const struct iovec *iov, int iovcount); 50b8861977SAsias He ssize_t disk_image__write(struct disk_image *disk, u64 sector, const struct iovec *iov, int iovcount); 5170b53f25SSasha Levin 5229084a74SPrasad Joshi static inline int disk_image__flush(struct disk_image *disk) 5329084a74SPrasad Joshi { 5429084a74SPrasad Joshi if (disk->ops->flush) 5529084a74SPrasad Joshi return disk->ops->flush(disk); 5629084a74SPrasad Joshi return fsync(disk->fd); 5729084a74SPrasad Joshi } 5829084a74SPrasad Joshi 59c9310ac4SAsias He struct disk_image *raw_image__probe(int fd, struct stat *st, bool readonly); 60c9310ac4SAsias He struct disk_image *blkdev__probe(const char *filename, struct stat *st); 61c9310ac4SAsias He 629f532d00SPekka Enberg #endif /* KVM__DISK_IMAGE_H */ 63