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| author | Luís Henriques <lhenriques@suse.de> | 2023-03-16 18:14:12 +0000 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2023-08-24 11:24:37 +0200 |
| commit | d9ae977d2d5635bde4fe75657417f5cffb14c954 (patch) | |
| tree | 7cad5e91c772528a91c9427eb766964ee6f486d8 /fs | |
| parent | 295fc4aa7de4b72cfd764b75a238f79b9433e3ec (diff) | |
| download | linux-stable-d9ae977d2d5635bde4fe75657417f5cffb14c954.tar.gz linux-stable-d9ae977d2d5635bde4fe75657417f5cffb14c954.tar.bz2 linux-stable-d9ae977d2d5635bde4fe75657417f5cffb14c954.zip | |
ceph: switch ceph_lookup/atomic_open() to use new fscrypt helper
Instead of setting the no-key dentry, use the new
fscrypt_prepare_lookup_partial() helper. We still need to mark the
directory as incomplete if the directory was just unlocked.
In ceph_atomic_open() this fixes a bug where a dentry is incorrectly
set with DCACHE_NOKEY_NAME when 'dir' has been evicted but the key is
still available (for example, where there's a drop_caches).
Signed-off-by: Luís Henriques <lhenriques@suse.de>
Reviewed-by: Xiubo Li <xiubli@redhat.com>
Reviewed-by: Milind Changire <mchangir@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/ceph/dir.c | 13 | ||||
| -rw-r--r-- | fs/ceph/file.c | 8 |
2 files changed, 10 insertions, 11 deletions
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c index 0e4f8e07022d..854cbdd66661 100644 --- a/fs/ceph/dir.c +++ b/fs/ceph/dir.c @@ -785,14 +785,15 @@ static struct dentry *ceph_lookup(struct inode *dir, struct dentry *dentry, return ERR_PTR(-ENAMETOOLONG); if (IS_ENCRYPTED(dir)) { - err = ceph_fscrypt_prepare_readdir(dir); + bool had_key = fscrypt_has_encryption_key(dir); + + err = fscrypt_prepare_lookup_partial(dir, dentry); if (err < 0) return ERR_PTR(err); - if (!fscrypt_has_encryption_key(dir)) { - spin_lock(&dentry->d_lock); - dentry->d_flags |= DCACHE_NOKEY_NAME; - spin_unlock(&dentry->d_lock); - } + + /* mark directory as incomplete if it has been unlocked */ + if (!had_key && fscrypt_has_encryption_key(dir)) + ceph_dir_clear_complete(dir); } /* can we conclude ENOENT locally? */ diff --git a/fs/ceph/file.c b/fs/ceph/file.c index e58787233e42..b1da02f5dbe3 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -791,11 +791,9 @@ retry: ihold(dir); if (IS_ENCRYPTED(dir)) { set_bit(CEPH_MDS_R_FSCRYPT_FILE, &req->r_req_flags); - if (!fscrypt_has_encryption_key(dir)) { - spin_lock(&dentry->d_lock); - dentry->d_flags |= DCACHE_NOKEY_NAME; - spin_unlock(&dentry->d_lock); - } + err = fscrypt_prepare_lookup_partial(dir, dentry); + if (err < 0) + goto out_req; } if (flags & O_CREAT) { |