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 2438c396e4SSasha Levin enum { 2538c396e4SSasha Levin DISK_IMAGE_REGULAR, 2638c396e4SSasha Levin DISK_IMAGE_MMAP, 2738c396e4SSasha Levin }; 2838c396e4SSasha Levin 29c1ed214eSPrasad Joshi #define MAX_DISK_IMAGES 4 307d22135fSAsias He 31499f3bedSPekka Enberg struct disk_image; 32499f3bedSPekka Enberg 33499f3bedSPekka Enberg struct disk_image_operations { 34dcd3cd8eSAsias He ssize_t (*read)(struct disk_image *disk, u64 sector, const struct iovec *iov, 355af21162SSasha Levin int iovcount, void *param); 36dcd3cd8eSAsias He ssize_t (*write)(struct disk_image *disk, u64 sector, const struct iovec *iov, 375af21162SSasha Levin int iovcount, void *param); 3829084a74SPrasad Joshi int (*flush)(struct disk_image *disk); 3972133dd2SAsias He int (*close)(struct disk_image *disk); 40499f3bedSPekka Enberg }; 41499f3bedSPekka Enberg 4297f16d66SAsias He struct disk_image_params { 4397f16d66SAsias He const char *filename; 4497f16d66SAsias He bool readonly; 45*5236b505SAsias He bool direct; 4697f16d66SAsias He }; 4797f16d66SAsias He 489f532d00SPekka Enberg struct disk_image { 499f532d00SPekka Enberg int fd; 503fdf659dSSasha Levin u64 size; 51499f3bedSPekka Enberg struct disk_image_operations *ops; 52499f3bedSPekka Enberg void *priv; 535af21162SSasha Levin void *disk_req_cb_param; 548b52f877SSasha Levin void (*disk_req_cb)(void *param, long len); 55f41a132bSSasha Levin bool async; 56f41a132bSSasha Levin int evt; 57f41a132bSSasha Levin #ifdef CONFIG_HAS_AIO 58f41a132bSSasha Levin io_context_t ctx; 59f41a132bSSasha Levin #endif 609f532d00SPekka Enberg }; 619f532d00SPekka Enberg 62*5236b505SAsias He struct disk_image *disk_image__open(const char *filename, bool readonly, bool direct); 6397f16d66SAsias He struct disk_image **disk_image__open_all(struct disk_image_params *params, int count); 647d22135fSAsias He struct disk_image *disk_image__new(int fd, u64 size, struct disk_image_operations *ops, int mmap); 6572133dd2SAsias He int disk_image__close(struct disk_image *disk); 669f9207c5SSasha Levin int disk_image__close_all(struct disk_image **disks, int count); 67fda63751SAsias He int disk_image__flush(struct disk_image *disk); 685af21162SSasha Levin ssize_t disk_image__read(struct disk_image *disk, u64 sector, const struct iovec *iov, 695af21162SSasha Levin int iovcount, void *param); 705af21162SSasha Levin ssize_t disk_image__write(struct disk_image *disk, u64 sector, const struct iovec *iov, 715af21162SSasha Levin int iovcount, void *param); 72ff6462e8SSasha Levin ssize_t disk_image__get_serial(struct disk_image *disk, void *buffer, ssize_t *len); 7370b53f25SSasha Levin 74c9310ac4SAsias He struct disk_image *raw_image__probe(int fd, struct stat *st, bool readonly); 75*5236b505SAsias He struct disk_image *blkdev__probe(const char *filename, int flags, struct stat *st); 76c9310ac4SAsias He 77dcd3cd8eSAsias He ssize_t raw_image__read(struct disk_image *disk, u64 sector, 785af21162SSasha Levin const struct iovec *iov, int iovcount, void *param); 79dcd3cd8eSAsias He ssize_t raw_image__write(struct disk_image *disk, u64 sector, 805af21162SSasha Levin const struct iovec *iov, int iovcount, void *param); 81dcd3cd8eSAsias He ssize_t raw_image__read_mmap(struct disk_image *disk, u64 sector, 825af21162SSasha Levin const struct iovec *iov, int iovcount, void *param); 83dcd3cd8eSAsias He ssize_t raw_image__write_mmap(struct disk_image *disk, u64 sector, 845af21162SSasha Levin const struct iovec *iov, int iovcount, void *param); 8587ee33c8SAsias He int raw_image__close(struct disk_image *disk); 868b52f877SSasha Levin void disk_image__set_callback(struct disk_image *disk, void (*disk_req_cb)(void *param, long len)); 879f532d00SPekka Enberg #endif /* KVM__DISK_IMAGE_H */ 88