eCryptfs: Handle ioctl calls with unlocked and compat functions
authorTyler Hicks <tyhicks@linux.vnet.ibm.com>
Tue, 3 Nov 2009 17:45:11 +0000 (11:45 -0600)
committerTyler Hicks <tyhicks@linux.vnet.ibm.com>
Mon, 9 Aug 2010 15:33:04 +0000 (10:33 -0500)
commitc43f7b8fb03be8bcc579bfc4e6ab70eac887ab55
treeec4f169d9260b78ef93e39c554fc32532b399b18
parenta1275c3b21e433888994f7b979cd1129d384ec9c
eCryptfs: Handle ioctl calls with unlocked and compat functions

Lower filesystems that only implemented unlocked_ioctl weren't being
passed ioctl calls because eCryptfs only checked for
lower_file->f_op->ioctl and returned -ENOTTY if it was NULL.

eCryptfs shouldn't implement ioctl(), since it doesn't require the BKL.
This patch introduces ecryptfs_unlocked_ioctl() and
ecryptfs_compat_ioctl(), which passes the calls on to the lower file
system.

https://bugs.launchpad.net/ecryptfs/+bug/469664

Reported-by: James Dupin <james.dupin@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
fs/ecryptfs/file.c