tree 108756b2460edff75bb7bc6c778e1a2c0ff50167
parent dead537dd8a1c9495322c1d6f7c780697f474af0
author Eric W. Biederman <ebiederm@xmission.com> 1251368404 -0700
committer Eric Paris <eparis@redhat.com> 1251374530 -0400

inotify: Ensure we alwasy write the terminating NULL.

Before the rewrite copy_event_to_user always wrote a terqminating '\0'
byte to user space after the filename.  Since the rewrite that
terminating byte was skipped if your filename is exactly a multiple of
event_size.  Ouch!

So add one byte to name_size before we round up and use clear_user to
set userspace to zero like /dev/zero does instead of copying the
strange nul_inotify_event.  I can't quite convince myself len_to_zero
will never exceed 16 and even if it doesn't clear_user should be more
efficient and a more accurate reflection of what the code is trying to
do.

Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com>
Signed-off-by: Eric Paris <eparis@redhat.com>