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_NONE,
  23     IF_IDE, IF_SCSI, IF_FLOPPY, IF_PFLASH, IF_MTD, IF_SD, IF_VIRTIO, IF_XEN,
  24     IF_COUNT
  25 } BlockInterfaceType;
  26
  27 struct DriveInfo {
  28     BlockDriverState *bdrv;
  29     char *id;
  30     const char *devaddr;
  31     BlockInterfaceType type;
  32     int bus;
  33     int unit;
  34     int auto_del;               /* see blockdev_mark_auto_del() */
  35     QemuOpts *opts;
  36     char serial[BLOCK_SERIAL_STRLEN + 1];
  37     QTAILQ_ENTRY(DriveInfo) next;
  38 };
  39
  40 #define MAX_IDE_DEVS    2
  41 #define MAX_SCSI_DEVS   255
  42
  43 DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit);
  44 int drive_get_max_bus(BlockInterfaceType type);
  45 DriveInfo *drive_get_next(BlockInterfaceType type);
  46 void drive_uninit(DriveInfo *dinfo);
  47 DriveInfo *drive_get_by_blockdev(BlockDriverState *bs);
  48
  49 QemuOpts *drive_add(const char *file, const char *fmt, ...) GCC_FMT_ATTR(2, 3);
  50 DriveInfo *drive_init(QemuOpts *arg, int default_to_scsi, int *fatal_error);
  51
  52 /* device-hotplug */
  53
  54 DriveInfo *add_init_drive(const char *opts);
  55
  56 void do_commit(Monitor *mon, const QDict *qdict);
  57 int do_eject(Monitor *mon, const QDict *qdict, QObject **ret_data);
  58 int do_block_set_passwd(Monitor *mon, const QDict *qdict, QObject **ret_data);
  59 int do_change_block(Monitor *mon, const char *device,
  60                     const char *filename, const char *fmt);
  61 int do_drive_del(Monitor *mon, const QDict *qdict, QObject **ret_data);
  62 int do_snapshot_blkdev(Monitor *mon, const QDict *qdict, QObject **ret_data);
  63 int do_block_resize(Monitor *mon, const QDict *qdict, QObject **ret_data);
  64
  65 #endif