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