affs_lookup: switch to d_splice_alias()
authorAl Viro <viro@zeniv.linux.org.uk>
Sun, 6 May 2018 16:20:40 +0000 (12:20 -0400)
committerAl Viro <viro@zeniv.linux.org.uk>
Mon, 21 May 2018 18:29:12 +0000 (14:29 -0400)
commit87fbd639c02ec96d67738e40b6521fb070ed7168
treea11ad3f7b598cddf1a18236ed13f4a86d16e288e
parent30da870ce4a4e007c901858a96e9e394a1daa74a
affs_lookup: switch to d_splice_alias()

Making something exportable takes more than providing ->s_export_ops.
In particular, ->lookup() *MUST* use d_splice_alias() instead of
d_add().

Reading Documentation/filesystems/nfs/Exporting would've been a good idea;
as it is, exporting AFFS is badly (and exploitably) broken.

Partially-Fixes: ed4433d72394 "fs/affs: make affs exportable"
Acked-by: David Sterba <dsterba@suse.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
fs/affs/namei.c