[Qemu-devel] [PATCH 0/7] block: Error parameter for opening/creating images

[Max Reitz]

This series adds an Error ** parameter to bdrv_open, bdrv_file_open,
bdrv_create and the respective functions provided by a block driver.

This results in more specific error information than just -errno provided
to the user when opening or creating images (disregarding the fact that
block drivers often already use error_report, which is generally changed
to error_setg through this patch).

The sixth patch in this series changes the qcow2 block driver to set an
example of usage in a block driver.

This series doesn't differ from the last RFC (v3) in functionality; the
only differences are related to the rebase on Kevin's block branch:
 - patch 1: iscsi_open call changed ("bs" instead of "&bs")
 - patch 3: bdrv_unref instead of bdrv_delete
 - patch 4: bdrv_unref; also, introduction of skip_create flag in
            qemu-img convert (which just leads to different indentation)

Furthermore, a new patch (7) has been added; this patch fixes the
qemu-iotest outputs (and one test itself (060)) which broke due to this
series.

Max Reitz (7):
  bdrv: Use "Error" for opening images
  bdrv: Use "Error" for creating images
  block: Error parameter for open functions
  block: Error parameter for create functions
  qemu-img create: Emit filename on error
  qcow2: Use Error parameter
  qemu-iotests: Adjustments due to error propagation

 block.c                      | 176 +++++++++++++++++++++++++++++--------------
 block/blkdebug.c             |   7 +-
 block/blkverify.c            |  11 ++-
 block/bochs.c                |   3 +-
 block/cloop.c                |   3 +-
 block/cow.c                  |  15 +++-
 block/curl.c                 |   3 +-
 block/dmg.c                  |   3 +-
 block/gluster.c              |   4 +-
 block/iscsi.c                |   8 +-
 block/mirror.c               |   5 +-
 block/nbd.c                  |   3 +-
 block/parallels.c            |   3 +-
 block/qcow.c                 |  15 +++-
 block/qcow2.c                | 142 ++++++++++++++++++++++------------
 block/qed.c                  |  18 +++--
 block/raw-posix.c            |  18 +++--
 block/raw-win32.c            |   9 ++-
 block/raw_bsd.c              |  16 +++-
 block/rbd.c                  |   6 +-
 block/sheepdog.c             |  16 +++-
 block/snapshot.c             |   2 +-
 block/ssh.c                  |   6 +-
 block/vdi.c                  |   6 +-
 block/vhdx.c                 |   3 +-
 block/vmdk.c                 |  17 ++++-
 block/vpc.c                  |   6 +-
 block/vvfat.c                |  13 +++-
 blockdev.c                   |  30 ++++----
 hw/block/xen_disk.c          |   7 +-
 include/block/block.h        |  11 +--
 include/block/block_int.h    |   9 ++-
 qemu-img.c                   |  39 +++++-----
 qemu-io.c                    |  14 +++-
 qemu-nbd.c                   |   6 +-
 tests/qemu-iotests/049.out   |  18 ++---
 tests/qemu-iotests/051.out   |  35 +++------
 tests/qemu-iotests/054.out   |   4 +-
 tests/qemu-iotests/060       |   2 +-
 tests/qemu-iotests/060.out   |   3 +-
 tests/qemu-iotests/common.rc |   2 +-
 41 files changed, 455 insertions(+), 262 deletions(-)

-- 
1.8.3.1