linux-kernel - [PATCH RFC v2 06/16] btrfs: add fscrypt operation table to superblock

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Message-Id: <95482e35f5ea655d1d09172c24245fc416698463.1658623319.git.sweettea-kernel@dorminy.me>
Date:   Sat, 23 Jul 2022 20:53:51 -0400
From:   Sweet Tea Dorminy <sweettea-kernel@...miny.me>
To:     Chris Mason <clm@...com>, Josef Bacik <josef@...icpanda.com>,
        David Sterba <dsterba@...e.com>, linux-btrfs@...r.kernel.org,
        linux-kernel@...r.kernel.org, osandov@...ndov.com,
        kernel-team@...com
Cc:     Sweet Tea Dorminy <sweettea-kernel@...miny.me>
Subject: [PATCH RFC v2 06/16] btrfs: add fscrypt operation table to superblock

From: Omar Sandoval <osandov@...ndov.com>

To use fscrypt_prepare_new_inode(), the superblock must have fscrypt
operations registered.

Signed-off-by: Omar Sandoval <osandov@...ndov.com>
Signed-off-by: Sweet Tea Dorminy <sweettea-kernel@...miny.me>
---
 fs/btrfs/fscrypt.c | 3 +++
 fs/btrfs/fscrypt.h | 1 +
 fs/btrfs/super.c   | 3 +++
 3 files changed, 7 insertions(+)

diff --git a/fs/btrfs/fscrypt.c b/fs/btrfs/fscrypt.c
index 2ed844dd61d0..9829d280a6bc 100644
--- a/fs/btrfs/fscrypt.c
+++ b/fs/btrfs/fscrypt.c
@@ -30,3 +30,6 @@ bool btrfs_fscrypt_match_name(const struct fscrypt_name *fname,
 			     de_name_len - sizeof(nokey_name->bytes), digest);
 	return !memcmp(digest, nokey_name->sha256, sizeof(digest));
 }
+
+const struct fscrypt_operations btrfs_fscrypt_ops = {
+};
diff --git a/fs/btrfs/fscrypt.h b/fs/btrfs/fscrypt.h
index 7f24d12e6ee0..07884206c8a1 100644
--- a/fs/btrfs/fscrypt.h
+++ b/fs/btrfs/fscrypt.h
@@ -22,4 +22,5 @@ static bool btrfs_fscrypt_match_name(const struct fscrypt_name *fname,
 }
 #endif
 
+extern const struct fscrypt_operations btrfs_fscrypt_ops;
 #endif /* BTRFS_FSCRYPT_H */
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 55af04fae075..e017e976c679 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -47,6 +47,8 @@
 #include "tests/btrfs-tests.h"
 #include "block-group.h"
 #include "discard.h"
+#include "fscrypt.h"
+
 #include "qgroup.h"
 #include "raid56.h"
 #define CREATE_TRACE_POINTS
@@ -1443,6 +1445,7 @@ static int btrfs_fill_super(struct super_block *sb,
 	sb->s_vop = &btrfs_verityops;
 #endif
 	sb->s_xattr = btrfs_xattr_handlers;
+	fscrypt_set_ops(sb, &btrfs_fscrypt_ops);
 	sb->s_time_gran = 1;
 #ifdef CONFIG_BTRFS_FS_POSIX_ACL
 	sb->s_flags |= SB_POSIXACL;
-- 
2.35.1