include/sysemu/blockdev.h

   1 /*
   2  * QEMU host block devices
   3  *
   4  * Copyright (c) 2003-2008 Fabrice Bellard
   5  *
   6  * This work is licensed under the terms of the GNU GPL, version 2 or
   7  * later.  See the COPYING file in the top-level directory.
   8  */
   9
  10 #ifndef BLOCKDEV_H
  11 #define BLOCKDEV_H
  12
  13 #include "block/block.h"
  14 #include "qemu/queue.h"
  15
  16 void blockdev_mark_auto_del(BlockBackend *blk);
  17 void blockdev_auto_del(BlockBackend *blk);
  18
  19 typedef enum {
  20     IF_DEFAULT = -1,            /* for use with drive_add() only */
  21     /*
  22      * IF_NONE must be zero, because we want MachineClass member
  23      * block_default_type to default-initialize to IF_NONE
  24      */
  25     IF_NONE = 0,
  26     IF_IDE, IF_SCSI, IF_FLOPPY, IF_PFLASH, IF_MTD, IF_SD, IF_VIRTIO, IF_XEN,
  27     IF_COUNT
  28 } BlockInterfaceType;
  29
  30 struct DriveInfo {
  31     BlockInterfaceType type;
  32     int bus;
  33     int unit;
  34     int auto_del;               /* see blockdev_mark_auto_del() */
  35     bool is_default;            /* Added by default_drive() ?  */
  36     int media_cd;
  37     QemuOpts *opts;
  38     QTAILQ_ENTRY(DriveInfo) next;
  39 };
  40
  41 DriveInfo *blk_legacy_dinfo(BlockBackend *blk);
  42 DriveInfo *blk_set_legacy_dinfo(BlockBackend *blk, DriveInfo *dinfo);
  43 BlockBackend *blk_by_legacy_dinfo(DriveInfo *dinfo);
  44
  45 void override_max_devs(BlockInterfaceType type, int max_devs);
  46
  47 DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit);
  48 void drive_check_orphaned(void);
  49 DriveInfo *drive_get_by_index(BlockInterfaceType type, int index);
  50 int drive_get_max_bus(BlockInterfaceType type);
  51 int drive_get_max_devs(BlockInterfaceType type);
  52 DriveInfo *drive_get_next(BlockInterfaceType type);
  53
  54 QemuOpts *drive_def(const char *optstr);
  55 QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file,
  56                     const char *optstr);
  57 DriveInfo *drive_new(QemuOpts *arg, BlockInterfaceType block_default_type,
  58                      Error **errp);
  59
  60 #endif