mirror of
https://github.com/clearlinux/kvmtool.git
synced 2026-08-23 06:28:00 +00:00
Sasha Levin
3b55dcde7f
Move io debug delay into kvm_config, the parser out of builtin-run into the disk code and make the init/exit functions match the rest of the code in style. Signed-off-by: Sasha Levin <levinsasha928@gmail.com> Signed-off-by: Pekka Enberg <penberg@kernel.org>
97 lines
2.9 KiB
C
97 lines
2.9 KiB
C
#ifndef KVM__DISK_IMAGE_H
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#define KVM__DISK_IMAGE_H
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#include "kvm/read-write.h"
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#include "kvm/util.h"
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#include "kvm/parse-options.h"
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#include <linux/types.h>
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#include <linux/fs.h> /* for BLKGETSIZE64 */
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#include <sys/ioctl.h>
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#include <sys/types.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include <stdbool.h>
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#include <sys/uio.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#define SECTOR_SHIFT 9
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#define SECTOR_SIZE (1UL << SECTOR_SHIFT)
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enum {
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DISK_IMAGE_REGULAR,
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DISK_IMAGE_MMAP,
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};
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#define MAX_DISK_IMAGES 4
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struct disk_image;
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struct disk_image_operations {
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ssize_t (*read)(struct disk_image *disk, u64 sector, const struct iovec *iov,
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int iovcount, void *param);
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ssize_t (*write)(struct disk_image *disk, u64 sector, const struct iovec *iov,
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int iovcount, void *param);
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int (*flush)(struct disk_image *disk);
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int (*close)(struct disk_image *disk);
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};
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struct disk_image_params {
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const char *filename;
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/*
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* wwpn == World Wide Port Number
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* tpgt == Target Portal Group Tag
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*/
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const char *wwpn;
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const char *tpgt;
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bool readonly;
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bool direct;
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};
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struct disk_image {
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int fd;
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u64 size;
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struct disk_image_operations *ops;
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void *priv;
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void *disk_req_cb_param;
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void (*disk_req_cb)(void *param, long len);
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bool async;
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int evt;
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#ifdef CONFIG_HAS_AIO
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io_context_t ctx;
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#endif
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const char *wwpn;
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const char *tpgt;
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int debug_iodelay;
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};
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int disk_img_name_parser(const struct option *opt, const char *arg, int unset);
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int disk_image__init(struct kvm *kvm);
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int disk_image__exit(struct kvm *kvm);
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struct disk_image *disk_image__new(int fd, u64 size, struct disk_image_operations *ops, int mmap);
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int disk_image__flush(struct disk_image *disk);
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ssize_t disk_image__read(struct disk_image *disk, u64 sector, const struct iovec *iov,
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int iovcount, void *param);
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ssize_t disk_image__write(struct disk_image *disk, u64 sector, const struct iovec *iov,
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int iovcount, void *param);
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ssize_t disk_image__get_serial(struct disk_image *disk, void *buffer, ssize_t *len);
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struct disk_image *raw_image__probe(int fd, struct stat *st, bool readonly);
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struct disk_image *blkdev__probe(const char *filename, int flags, struct stat *st);
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ssize_t raw_image__read(struct disk_image *disk, u64 sector,
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const struct iovec *iov, int iovcount, void *param);
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ssize_t raw_image__write(struct disk_image *disk, u64 sector,
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const struct iovec *iov, int iovcount, void *param);
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ssize_t raw_image__read_mmap(struct disk_image *disk, u64 sector,
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const struct iovec *iov, int iovcount, void *param);
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ssize_t raw_image__write_mmap(struct disk_image *disk, u64 sector,
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const struct iovec *iov, int iovcount, void *param);
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int raw_image__close(struct disk_image *disk);
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void disk_image__set_callback(struct disk_image *disk, void (*disk_req_cb)(void *param, long len));
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#endif /* KVM__DISK_IMAGE_H */
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