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# Date Author Comment
d5124c00 09/12/2013 11:12 am Max Reitz

bdrv: Use "Error" for creating images

Add an Error ** parameter to BlockDriver.bdrv_create to allow more
specific error messages.

Signed-off-by: Max Reitz <>
015a1036 09/12/2013 11:12 am Max Reitz

bdrv: Use "Error" for opening images

Add an Error ** parameter to BlockDriver.bdrv_open and
BlockDriver.bdrv_file_open to allow more specific error messages.

Signed-off-by: Max Reitz <>
f0d35765 08/19/2013 04:52 pm Stefan Hajnoczi

block/ssh: drop return_true()

.io_flush() is no longer called so drop return_true().

Signed-off-by: Stefan Hajnoczi <>
f2e5dca4 08/19/2013 04:52 pm Stefan Hajnoczi

aio: drop io_flush argument

The .io_flush() handler no longer exists and has no users. Drop the
io_flush argument to aio_set_fd_handler() and related functions.

The AioFlushEventNotifierHandler and AioFlushHandler typedefs are no
longer used and are dropped too....
0b3f21e6 06/28/2013 10:20 am Richard W.M. Jones

block/ssh: Set bdrv_has_zero_init according to the file type.

If the remote is a regular file, set it to true (ie. reads of
uninitialized areas in a newly created file will return zeroes).
If we can't prove that, return false (a safe default).

Tested by adding a debugging print statement [not part of this commit]...
56d1b4d2 04/22/2013 12:34 pm Kevin Wolf

block: Remove filename parameter from .bdrv_file_open()

It is unused now in all block drivers.

Signed-off-by: Kevin Wolf <>
Reviewed-by: Eric Blake <>
c7a101f5 04/19/2013 12:45 pm Richard W.M. Jones

ssh: Remove unnecessary use of strlen function.

Reviewed-by: Eric Blake <>
Reviewed-by: Stefan Weil <>

Signed-off-by: Stefan Hajnoczi <>
6ae7d660 04/19/2013 12:44 pm Stefan Weil

block/ssh: Add missing gcc format attributes

Now gcc will check whether format string and variable arguments match.

Signed-off-by: Stefan Weil <>
Signed-off-by: Stefan Hajnoczi <>
0a12ec87 04/15/2013 11:18 am Richard W.M. Jones

block: Add support for Secure Shell (ssh) block device.

qemu-system-x86_64 -drive file=ssh://hostname/some/image

QEMU will ssh into 'hostname' and open '/some/image' which is made
available as a standard block device.

You can specify a username (ssh://user@host/...) and/or a port number...
9a2d462e 04/15/2013 11:18 am Richard W.M. Jones

block: ssh: Use libssh2_sftp_fsync (if supported by libssh2) to flush to disk.

libssh2_sftp_fsync is an extension to libssh2 to support fsync(2) over
sftp, which is itself an extension of OpenSSH.

If both libssh2 and the ssh daemon support it, this will allow...