[Qemu-devel] [PATCH v4 0/3] raw-posix: Fix raw_co_get_block_status()

[Max Reitz]

raw_co_get_block_status() should return 0 and set *pnum to 0 after the
EOF; currently it does this merely by accident, so implement it
directly. Also, nb_sectors should be clamped against the image end.

While doing that, centralize the generation of
raw_co_get_block_status()'s return value along the way.


v4:
- Patch 1: Use DIV_ROUND_UP() for the range until the image end instead
  of truncating integer division [Eric]
- Patch 3:
  - Use qemu-img resize -f raw instrad of truncate [Eric]
  - Use qemu with HMP qemu-io instead of qemu-io itself; drop the
    qemu-img test [Eric]


git-backport-diff against v3:

Key:
[----] : patches are identical
[####] : number of functional differences between upstream/downstream patch
[down] : patch is downstream-only
The flags [FC] indicate (F)unctional and (C)ontextual differences, respectively

001/3:[0002] [FC] 'raw-posix: Fix raw_co_get_block_status() after EOF'
002/3:[----] [-C] 'raw-posix: raw_co_get_block_status() return value'
003/3:[0021] [FC] 'iotests: Add test for external image truncation'

Max Reitz (3):
  raw-posix: Fix raw_co_get_block_status() after EOF
  raw-posix: raw_co_get_block_status() return value
  iotests: Add test for external image truncation

 block/raw-posix.c          | 42 ++++++++++++++++++++++++------------------
 tests/qemu-iotests/102     | 21 +++++++++++++++++++--
 tests/qemu-iotests/102.out | 11 +++++++++++
 3 files changed, 54 insertions(+), 20 deletions(-)

-- 
1.9.3