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.h"
  14 #include "qemu-queue.h"
  15
  16 void blockdev_mark_auto_del(BlockDriverState *bs);
  17 void blockdev_auto_del(BlockDriverState *bs);
  18
  19 #define BLOCK_SERIAL_STRLEN 20
  20
  21 typedef enum {
  22     IF_DEFAULT = -1,            /* for use with drive_add() only */
  23     IF_NONE,
  24     IF_IDE, IF_SCSI, IF_FLOPPY, IF_PFLASH, IF_MTD, IF_SD, IF_VIRTIO, IF_XEN,
  25     IF_COUNT
  26 } BlockInterfaceType;
  27
  28 struct DriveInfo {
  29     BlockDriverState *bdrv;
  30     char *id;
  31     const char *devaddr;
  32     BlockInterfaceType type;
  33     int bus;
  34     int unit;
  35     int auto_del;               /* see blockdev_mark_auto_del() */
  36     int media_cd;
  37     QemuOpts *opts;
  38     char serial[BLOCK_SERIAL_STRLEN + 1];
  39     QTAILQ_ENTRY(DriveInfo) next;
  40     int refcount;
  41 };
  42
  43 DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit);
  44 DriveInfo *drive_get_by_index(BlockInterfaceType type, int index);
  45 int drive_get_max_bus(BlockInterfaceType type);
  46 DriveInfo *drive_get_next(BlockInterfaceType type);
  47 void drive_get_ref(DriveInfo *dinfo);
  48 void drive_put_ref(DriveInfo *dinfo);
  49 DriveInfo *drive_get_by_blockdev(BlockDriverState *bs);
  50
  51 QemuOpts *drive_def(const char *optstr);
  52 QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file,
  53                     const char *optstr);
  54 DriveInfo *drive_init(QemuOpts *arg, int default_to_scsi);
  55
  56 /* device-hotplug */
  57
  58 DriveInfo *add_init_drive(const char *opts);
  59
  60 void do_commit(Monitor *mon, const QDict *qdict);
  61 int do_eject(Monitor *mon, const QDict *qdict, QObject **ret_data);
  62 int do_change_block(Monitor *mon, const char *device,
  63                     const char *filename, const char *fmt);
  64 int do_drive_del(Monitor *mon, const QDict *qdict, QObject **ret_data);
  65 int do_block_set_io_throttle(Monitor *mon,
  66                              const QDict *qdict, QObject **ret_data);
  67 #endif