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(parent: 3d51f99) | patch
btrfs: sanitize BTRFS_IOC_FILE_EXTENT_SAME
authorAl Viro <viro@zeniv.linux.org.uk>
Thu, 12 Dec 2013 04:07:51 +0000 (23:07 -0500)
committerAl Viro <viro@zeniv.linux.org.uk>
Sat, 25 Jan 2014 08:13:03 +0000 (03:13 -0500)
commit9358e70d8c3cb81a50a3633e3517e9d9f36378dc
tree05de87ea5f6268946abfe39c26770d65a7c4373etree | snapshot
parent3d51f99f875f492f250748f875e5c0af34defa7bcommit | diff
btrfs: sanitize BTRFS_IOC_FILE_EXTENT_SAME

* don't assume that ->dest_count won't change between copy_from_user()
and memdup_user()
* use fdget instead of fget
* don't bother comparing superblocks when we'd already compared vfsmounts
* get rid of excessive goto
* use file_inode() instead of open-coding the sucker

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
fs/btrfs/ioctl.c diff | blob | history
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