diff options
| -rw-r--r-- | blockdev.c | 36 | ||||
| -rw-r--r-- | qapi/block-core.json | 32 | ||||
| -rw-r--r-- | qmp-commands.hx | 48 |
3 files changed, 116 insertions, 0 deletions
diff --git a/blockdev.c b/blockdev.c index 97be42f6cd..d01a99e9cf 100644 --- a/blockdev.c +++ b/blockdev.c @@ -2088,6 +2088,42 @@ out: aio_context_release(aio_context); } +void qmp_blockdev_open_tray(const char *device, bool has_force, bool force, + Error **errp) +{ + BlockBackend *blk; + bool locked; + + if (!has_force) { + force = false; + } + + blk = blk_by_name(device); + if (!blk) { + error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, + "Device '%s' not found", device); + return; + } + + if (!blk_dev_has_removable_media(blk)) { + error_setg(errp, "Device '%s' is not removable", device); + return; + } + + if (blk_dev_is_tray_open(blk)) { + return; + } + + locked = blk_dev_is_medium_locked(blk); + if (locked) { + blk_dev_eject_request(blk, force); + } + + if (!locked || force) { + blk_dev_change_media_cb(blk, false); + } +} + /* throttling disk I/O limits */ void qmp_block_set_io_throttle(const char *device, int64_t bps, int64_t bps_rd, int64_t bps_wr, diff --git a/qapi/block-core.json b/qapi/block-core.json index 425fdab706..b65ab81218 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -1876,6 +1876,38 @@ ## { 'command': 'blockdev-add', 'data': { 'options': 'BlockdevOptions' } } +## +# @blockdev-open-tray: +# +# Opens a block device's tray. If there is a block driver state tree inserted as +# a medium, it will become inaccessible to the guest (but it will remain +# associated to the block device, so closing the tray will make it accessible +# again). +# +# If the tray was already open before, this will be a no-op. +# +# Once the tray opens, a DEVICE_TRAY_MOVED event is emitted. There are cases in +# which no such event will be generated, these include: +# - if the guest has locked the tray, @force is false and the guest does not +# respond to the eject request +# - if the BlockBackend denoted by @device does not have a guest device attached +# to it +# - if the guest device does not have an actual tray and is empty, for instance +# for floppy disk drives +# +# @device: block device name +# +# @force: #optional if false (the default), an eject request will be sent to +# the guest if it has locked the tray (and the tray will not be opened +# immediately); if true, the tray will be opened regardless of whether +# it is locked +# +# Since: 2.5 +## +{ 'command': 'blockdev-open-tray', + 'data': { 'device': 'str', + '*force': 'bool' } } + ## # @BlockErrorAction diff --git a/qmp-commands.hx b/qmp-commands.hx index 7f85d4046c..d9ae25c498 100644 --- a/qmp-commands.hx +++ b/qmp-commands.hx @@ -3955,6 +3955,54 @@ Example (2): EQMP { + .name = "blockdev-open-tray", + .args_type = "device:s,force:b?", + .mhandler.cmd_new = qmp_marshal_blockdev_open_tray, + }, + +SQMP +blockdev-open-tray +------------------ + +Opens a block device's tray. If there is a block driver state tree inserted as a +medium, it will become inaccessible to the guest (but it will remain associated +to the block device, so closing the tray will make it accessible again). + +If the tray was already open before, this will be a no-op. + +Once the tray opens, a DEVICE_TRAY_MOVED event is emitted. There are cases in +which no such event will be generated, these include: +- if the guest has locked the tray, @force is false and the guest does not + respond to the eject request +- if the BlockBackend denoted by @device does not have a guest device attached + to it +- if the guest device does not have an actual tray and is empty, for instance + for floppy disk drives + +Arguments: + +- "device": block device name (json-string) +- "force": if false (the default), an eject request will be sent to the guest if + it has locked the tray (and the tray will not be opened immediately); + if true, the tray will be opened regardless of whether it is locked + (json-bool, optional) + +Example: + +-> { "execute": "blockdev-open-tray", + "arguments": { "device": "ide1-cd0" } } + +<- { "timestamp": { "seconds": 1418751016, + "microseconds": 716996 }, + "event": "DEVICE_TRAY_MOVED", + "data": { "device": "ide1-cd0", + "tray-open": true } } + +<- { "return": {} } + +EQMP + + { .name = "query-named-block-nodes", .args_type = "", .mhandler.cmd_new = qmp_marshal_query_named_block_nodes, |