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ceph: make d_revalidate call fscrypt revalidator for encrypted dentries 

If we have a dentry which represents a no-key name, then we need to test
whether the parent directory's encryption key has since been added.  Do
that before we test anything else about the dentry.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Xiubo Li <xiubli@redhat.com>
Reviewed-and-tested-by: Luís Henriques <lhenriques@suse.de>
Reviewed-by: Milind Changire <mchangir@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Jeff Layton 2020-08-07 15:47:17 -04:00 committed by Ilya Dryomov
parent cb3524a8bd
commit c526760181
1 changed files with 7 additions and 2 deletions
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9
fs/ceph/dir.c
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@ -1782,6 +1782,10 @@ static int ceph_d_revalidate(struct dentry *dentry, unsigned int flags)
struct inode *dir, *inode;
struct ceph_mds_client *mdsc;
valid = fscrypt_d_revalidate(dentry, flags);
if (valid <= 0)
return valid;
if (flags & LOOKUP_RCU) {
parent = READ_ONCE(dentry->d_parent);
dir = d_inode_rcu(parent);
@ -1794,8 +1798,9 @@ static int ceph_d_revalidate(struct dentry *dentry, unsigned int flags)
inode = d_inode(dentry);
}
dout("d_revalidate %p '%pd' inode %p offset 0x%llx\n", dentry,
dentry, inode, ceph_dentry(dentry)->offset);
dout("d_revalidate %p '%pd' inode %p offset 0x%llx nokey %d\n", dentry,
dentry, inode, ceph_dentry(dentry)->offset,
!!(dentry->d_flags & DCACHE_NOKEY_NAME));
mdsc = ceph_sb_to_client(dir->i_sb)->mdsc;