linux-ext4 - [PATCH v2 3/9] ubifs: remove ubifs_dir

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Date:   Wed,  2 Dec 2020 18:20:35 -0800
From:   Eric Biggers <ebiggers@...nel.org>
To:     linux-fscrypt@...r.kernel.org
Cc:     linux-ext4@...r.kernel.org, linux-f2fs-devel@...ts.sourceforge.net,
        linux-mtd@...ts.infradead.org, linux-fsdevel@...r.kernel.org
Subject: [PATCH v2 3/9] ubifs: remove ubifs_dir_open()

From: Eric Biggers <ebiggers@...gle.com>

Since encrypted directories can be opened and searched without their key
being available, and each readdir and ->lookup() tries to set up the
key, trying to set up the key in ->open() too isn't really useful.

Just remove it so that directories don't need an ->open() method
anymore, and so that we eliminate a use of fscrypt_get_encryption_info()
(which I'd like to stop exporting to filesystems).

Signed-off-by: Eric Biggers <ebiggers@...gle.com>
---
 fs/ubifs/dir.c | 9 ---------
 1 file changed, 9 deletions(-)

diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c
index 08fde777c3247..009fbf844d3e6 100644
--- a/fs/ubifs/dir.c
+++ b/fs/ubifs/dir.c
@@ -1619,14 +1619,6 @@ int ubifs_getattr(const struct path *path, struct kstat *stat,
 	return 0;
 }
 
-static int ubifs_dir_open(struct inode *dir, struct file *file)
-{
-	if (IS_ENCRYPTED(dir))
-		return fscrypt_get_encryption_info(dir) ? -EACCES : 0;
-
-	return 0;
-}
-
 const struct inode_operations ubifs_dir_inode_operations = {
 	.lookup      = ubifs_lookup,
 	.create      = ubifs_create,
@@ -1653,7 +1645,6 @@ const struct file_operations ubifs_dir_operations = {
 	.iterate_shared = ubifs_readdir,
 	.fsync          = ubifs_fsync,
 	.unlocked_ioctl = ubifs_ioctl,
-	.open		= ubifs_dir_open,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl   = ubifs_compat_ioctl,
 #endif
-- 
2.29.2