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btrfs: Check if dest_offset is block-size aligned before cloning file
authorLi Zefan <lizf@cn.fujitsu.com>
Fri, 19 Nov 2010 01:36:10 +0000 (01:36 +0000)
committerChris Mason <chris.mason@oracle.com>
Mon, 22 Nov 2010 03:26:05 +0000 (22:26 -0500)
commit2a6b8daedaf3682bed3fc1d4e2390491f6e19c49
tree76f418aa17a1e3e690d5c1fb164e0c4b96ca1e8dtree
parent0de90876c6cb774d4a424dafc1fc9ec50071b81bcommit | diff
btrfs: Check if dest_offset is block-size aligned before cloning file

We've done the check for src_offset and src_length, and We should
also check dest_offset, otherwise we'll corrupt the destination
file:

  (After cloning file1 to file2 with unaligned dest_offset)
  # cat /mnt/file2
  cat: /mnt/file2: Input/output error

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
fs/btrfs/ioctl.c diff | blob | blame | history
Ubuntu Disco kernel mirror for Proxmox VE and PMG