ecryptfs: fix failure handling in ->readlink()
authorAl Viro <viro@zeniv.linux.org.uk>
Sat, 30 Nov 2013 03:51:47 +0000 (22:51 -0500)
committerAl Viro <viro@zeniv.linux.org.uk>
Sat, 25 Jan 2014 08:13:00 +0000 (03:13 -0500)
commitb22e8fedc19588864a6ba0acefbbed06f05ba713
treedb6badfb305598e47a867f399fe30ec38c304cb6
parentd8ec26d7f8287f5788a494f56e8814210f0e64be
ecryptfs: fix failure handling in ->readlink()

If ecryptfs_readlink_lower() fails, buf remains an uninitialized
pointer and passing it nd_set_link() won't do anything good.

Fixed by switching ecryptfs_readlink_lower() to saner API - make it
return buf or ERR_PTR(...) and update callers.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
fs/ecryptfs/inode.c