From 025ccaa7f9d2f54a79567599d3eb402100bed7a4 Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Mon, 7 Nov 2011 17:50:13 +0100 Subject: block: add eject request callback Recent versions of udev always keep the tray locked so that the kernel can observe "eject request" events (aka tray button presses) even on discs that aren't mounted. Add support for these events in the ATAPI and SCSI cd drive device models. To let management cope with the behavior of udev, an event should also be added for "tray opened/closed". This way, after issuing an "eject" command, management can poll until the guests actually reacts to the command. They can then issue the "change" command after the tray has been opened, or try with "eject -f" after a (configurable?) timeout. However, with this patch and the corresponding support in the device models, at least it is possible to do a manual two-step eject+change sequence. Signed-off-by: Paolo Bonzini Signed-off-by: Kevin Wolf --- block.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'block.c') diff --git a/block.c b/block.c index 9bb236c..5c30c9d 100644 --- a/block.c +++ b/block.c @@ -816,6 +816,13 @@ bool bdrv_dev_has_removable_media(BlockDriverState *bs) return !bs->dev || (bs->dev_ops && bs->dev_ops->change_media_cb); } +void bdrv_dev_eject_request(BlockDriverState *bs, bool force) +{ + if (bs->dev_ops && bs->dev_ops->eject_request_cb) { + bs->dev_ops->eject_request_cb(bs->dev_opaque, force); + } +} + bool bdrv_dev_is_tray_open(BlockDriverState *bs) { if (bs->dev_ops && bs->dev_ops->is_tray_open) { -- cgit v1.1