blockdev.h (1872B)
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/block.h" 14 #include "qemu/queue.h" 15 16 typedef enum { 17 IF_DEFAULT = -1, /* for use with drive_add() only */ 18 /* 19 * IF_NONE must be zero, because we want MachineClass member 20 * block_default_type to default-initialize to IF_NONE 21 */ 22 IF_NONE = 0, 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 BlockInterfaceType type; 29 int bus; 30 int unit; 31 int auto_del; /* see blockdev_mark_auto_del() */ 32 bool is_default; /* Added by default_drive() ? */ 33 int media_cd; 34 QemuOpts *opts; 35 QTAILQ_ENTRY(DriveInfo) next; 36 }; 37 38 /* 39 * Global state (GS) API. These functions run under the BQL. 40 * 41 * See include/block/block-global-state.h for more information about 42 * the GS API. 43 */ 44 45 void blockdev_mark_auto_del(BlockBackend *blk); 46 void blockdev_auto_del(BlockBackend *blk); 47 48 DriveInfo *blk_legacy_dinfo(BlockBackend *blk); 49 DriveInfo *blk_set_legacy_dinfo(BlockBackend *blk, DriveInfo *dinfo); 50 BlockBackend *blk_by_legacy_dinfo(DriveInfo *dinfo); 51 52 void override_max_devs(BlockInterfaceType type, int max_devs); 53 54 DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit); 55 void drive_check_orphaned(void); 56 DriveInfo *drive_get_by_index(BlockInterfaceType type, int index); 57 int drive_get_max_bus(BlockInterfaceType type); 58 59 QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file, 60 const char *optstr); 61 DriveInfo *drive_new(QemuOpts *arg, BlockInterfaceType block_default_type, 62 Error **errp); 63 64 #endif