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 typedef enum {
  21     IF_DEFAULT = -1,            /* for use with drive_add() only */
  22     /*
  23      * IF_IDE must be zero, because we want QEMUMachine member
  24      * block_default_type to default-initialize to IF_IDE
  25      */
  26     IF_IDE = 0,
  27     IF_NONE,
  28     IF_SCSI, IF_FLOPPY, IF_PFLASH, IF_MTD, IF_SD, IF_VIRTIO, IF_XEN,
  29     IF_COUNT
  30 } BlockInterfaceType;
  31
  32 struct DriveInfo {
  33     BlockDriverState *bdrv;
  34     char *id;
  35     const char *devaddr;
  36     BlockInterfaceType type;
  37     int bus;
  38     int unit;
  39     int auto_del;               /* see blockdev_mark_auto_del() */
  40     int media_cd;
  41     int cyls, heads, secs, trans;
  42     QemuOpts *opts;
  43     const char *serial;
  44     QTAILQ_ENTRY(DriveInfo) next;
  45     int refcount;
  46 };
  47
  48 DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit);
  49 DriveInfo *drive_get_by_index(BlockInterfaceType type, int index);
  50 int drive_get_max_bus(BlockInterfaceType type);
  51 DriveInfo *drive_get_next(BlockInterfaceType type);
  52 void drive_get_ref(DriveInfo *dinfo);
  53 void drive_put_ref(DriveInfo *dinfo);
  54 DriveInfo *drive_get_by_blockdev(BlockDriverState *bs);
  55
  56 QemuOpts *drive_def(const char *optstr);
  57 QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file,
  58                     const char *optstr);
  59 DriveInfo *drive_init(QemuOpts *arg, BlockInterfaceType block_default_type);
  60
  61 /* device-hotplug */
  62
  63 DriveInfo *add_init_drive(const char *opts);
  64
  65 void qmp_change_blockdev(const char *device, const char *filename,
  66                          bool has_format, const char *format, Error **errp);
  67 void do_commit(Monitor *mon, const QDict *qdict);
  68 int do_drive_del(Monitor *mon, const QDict *qdict, QObject **ret_data);
  69 #endif