This changes the monitor eject_device() function to not check for
bdrv_is_inserted().
Example run where the bug manifests itself:
(output of 'info block' is stripped to include only the CD-ROM device)
(qemu) info block
ide1-cd0: type=cdrom removable=1 locked=0 [not inserted]
(qemu) change ide1-cd0 /dev/cdrom host_cdrom
(qemu) info block
ide1-cd0: type=cdrom removable=1 locked=0 file=/dev/cdrom ro=1 drv=host_cdrom encrypted=0
(qemu) eject ide1-cd0
(qemu) info block
ide1-cd0: type=cdrom removable=1 locked=0 file=/dev/cdrom ro=1 drv=host_cdrom encrypted=0
# at this point, a disk was inserted on the host CD-ROM drive
(qemu) info block
ide1-cd0: type=cdrom removable=1 locked=0 file=/dev/cdrom ro=1 drv=host_cdrom encrypted=0
(qemu) eject ide1-cd0
(qemu) info block
ide1-cd0: type=cdrom removable=1 locked=0 [not inserted]
(qemu)
The first eject command didn't work because the is_inserted() check
failed.
I have no clue why the code had the is_inserted() check, as it doesn't matter
if there is a disk present at the host drive, when the user wants the virtual
device to be disconnected from the host device.
The is_inserted() check has another side effect: a memory leak if the "change"
command is used multiple times, as do_change() calls eject_device() before
re-opening the block device, but bdrv_close() is never called.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This is the list of drives defined with drive_init(). Hide it, so it
doesn't get abused.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
do_commit() and mux_proc_byte() iterate over the list of drives
defined with drive_init(). This misses host block devices defined by
other means. Such means don't exist now, but will be introduced later
in this series.
Change them to use new bdrv_commit_all(), which iterates over all host
block devices.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
That's where they belong semantically (block device host part), even
though the actions are actually executed by guest device code.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Empty file used to create an empty drive (no media). Since commit
9dfd7c7a, it's an error: "qemu: could not open disk image : No such
file or directory". Older versions of libvirt can choke on this.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
We should use 'dinfo->serial' length, 'serial' is a pointer, so
the serial number length is currently limited to the pointer size.
This fixes https://bugs.launchpad.net/qemu/+bug/584143 and is also
valid for stable.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Anything that moves hundreds of lines out of vl.c can't be all bad.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
