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 <viro@zeniv.linux.org.uk>
diff --git a/fs/open.c b/fs/open.c
index fca72c4..9156cb0 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -840,8 +840,8 @@
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) {