fs: completely ignore unknown open flags
authorChristoph Hellwig <hch@lst.de>
Thu, 27 Apr 2017 07:42:25 +0000 (09:42 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 15 Jul 2017 09:57:44 +0000 (11:57 +0200)
commit4043d5bca587eab2dfcca5e2da7e770d16b127c8
tree0b800d49ae5502d5ff06f3181e57a987a5b48379
parentccb973e681d8f9fedb398b87a115b48ed96a6214
fs: completely ignore unknown open flags

commit 629e014bb8349fcf7c1e4df19a842652ece1c945 upstream.

Currently we just stash anything we got into file->f_flags, and the
report it in fcntl(F_GETFD).  This patch just clears out all unknown
flags so that we don't pass them to the fs or report them.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
fs/open.c