text: /*
   * QEMU host block devices
   *
   * Copyright (c) 2003-2008 Fabrice Bellard
   *
   * This work is licensed under the terms of the GNU GPL, version 2 or
   * later.  See the COPYING file in the top-level directory.
   */
  
  #ifndef BLOCKDEV_H
  #define BLOCKDEV_H
  
  #include "block.h"
  #include "qemu-queue.h"
  
  void blockdev_mark_auto_del(BlockDriverState *bs);
  void blockdev_auto_del(BlockDriverState *bs);
  
  #define BLOCK_SERIAL_STRLEN 20
  
  typedef enum {
      IF_DEFAULT = -1,            /* for use with drive_add() only */
      IF_NONE,
      IF_IDE, IF_SCSI, IF_FLOPPY, IF_PFLASH, IF_MTD, IF_SD, IF_VIRTIO, IF_XEN,
      IF_COUNT
  } BlockInterfaceType;
  
  struct DriveInfo {
      BlockDriverState *bdrv;
      char *id;
      const char *devaddr;
      BlockInterfaceType type;
      int bus;
      int unit;
      int auto_del;               /* see blockdev_mark_auto_del() */
      int media_cd;
      QemuOpts *opts;
      char serial[BLOCK_SERIAL_STRLEN + 1];
      QTAILQ_ENTRY(DriveInfo) next;
      int refcount;
  };
  
  DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit);
  DriveInfo *drive_get_by_index(BlockInterfaceType type, int index);
  int drive_get_max_bus(BlockInterfaceType type);
  DriveInfo *drive_get_next(BlockInterfaceType type);
  void drive_get_ref(DriveInfo *dinfo);
  void drive_put_ref(DriveInfo *dinfo);
  DriveInfo *drive_get_by_blockdev(BlockDriverState *bs);
  
  QemuOpts *drive_def(const char *optstr);
  QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file,
                      const char *optstr);
  DriveInfo *drive_init(QemuOpts *arg, int default_to_scsi);
  
  /* device-hotplug */
  
  DriveInfo *add_init_drive(const char *opts);
  
  void do_commit(Monitor *mon, const QDict *qdict);
  int do_eject(Monitor *mon, const QDict *qdict, QObject **ret_data);
  int do_block_set_passwd(Monitor *mon, const QDict *qdict, QObject **ret_data);
  int do_change_block(Monitor *mon, const char *device,
                      const char *filename, const char *fmt);
  int do_drive_del(Monitor *mon, const QDict *qdict, QObject **ret_data);
  int do_snapshot_blkdev(Monitor *mon, const QDict *qdict, QObject **ret_data);
  int do_block_resize(Monitor *mon, const QDict *qdict, QObject **ret_data);
  
  #endif
  