From bb458c644a59dbba3a1fe59b27106c5e68e1c4bd Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 13 Jul 2013 13:26:37 +0400 Subject: Safer ABI for O_TMPFILE [suggested by Rasmus Villemoes] make O_DIRECTORY | O_RDWR part of O_TMPFILE; that will fail on old kernels in a lot more cases than what I came up with. And make sure O_CREAT doesn't get there... Signed-off-by: Al Viro --- fs/open.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'fs/open.c') diff --git a/fs/open.c b/fs/open.c index fca72c4d3f17..9156cb050d08 100644 --- a/fs/open.c +++ b/fs/open.c @@ -840,8 +840,8 @@ static inline int build_open_flags(int flags, umode_t mode, struct open_flags *o if (flags & __O_SYNC) flags |= O_DSYNC; - if (flags & O_TMPFILE) { - if (!(flags & O_CREAT)) + if (flags & __O_TMPFILE) { + if ((flags & O_TMPFILE_MASK) != O_TMPFILE) return -EINVAL; acc_mode = MAY_OPEN | ACC_MODE(flags); } else if (flags & O_PATH) { -- cgit v1.2.3