open: make RESOLVE_CACHED correctly test for O_TMPFILE
authorAleksa Sarai <cyphar@cyphar.com>
Sat, 5 Aug 2023 16:11:58 +0000 (02:11 +1000)
committerChristian Brauner <brauner@kernel.org>
Sun, 6 Aug 2023 13:08:35 +0000 (15:08 +0200)
commita0fc452a5d7fed986205539259df1d60546f536c
tree020cfc21ca401802c599f000db6d8757e01c7f5e
parent024ff300db33968c133435a146d51ac22db27374
open: make RESOLVE_CACHED correctly test for O_TMPFILE

O_TMPFILE is actually __O_TMPFILE|O_DIRECTORY. This means that the old
fast-path check for RESOLVE_CACHED would reject all users passing
O_DIRECTORY with -EAGAIN, when in fact the intended test was to check
for __O_TMPFILE.

Cc: stable@vger.kernel.org # v5.12+
Fixes: 99668f618062 ("fs: expose LOOKUP_CACHED through openat2() RESOLVE_CACHED")
Signed-off-by: Aleksa Sarai <cyphar@cyphar.com>
Message-Id: <20230806-resolve_cached-o_tmpfile-v1-1-7ba16308465e@cyphar.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
fs/open.c