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2010-05-17parallels: use qemu block APIChristoph Hellwig1-18/+6
Use bdrv_pwrite to access the backing device instead of pread, and convert the driver to implementing the bdrv_open method which gives it an already opened BlockDriverState for the underlying device. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-05-17parallels: use preadChristoph Hellwig1-22/+11
Use pread instead of lseek + read in preparation of using the qemu block API. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-05-03block: Open the underlying image file in generic codeKevin Wolf1-1/+1
Format drivers shouldn't need to bother with things like file names, but rather just get an open BlockDriverState for the underlying protocol. This patch introduces this behaviour for bdrv_open implementation. For protocols which need to access the filename to open their file/device/connection/... a new callback bdrv_file_open is introduced which doesn't get an underlying file opened. For now, also some of the more obscure formats use bdrv_file_open because they open() the file themselves instead of using the block.c functions. They need to be fixed in later patches. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-01-26Read-only device changed to opens it's file for read-only.Naphtali Sprei1-4/+2
Signed-off-by: Naphtali Sprei <nsprei@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-11-12Fix 32-bit overflow in parallels image supportDavid Woodhouse1-2/+3
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-05-14Move block drivers into their own directoryAnthony Liguori1-0/+181
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>