linux-ext4 - [PATCH v4 4/7] libfs: Chain encryption checks after case-insensitive revalidation

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Date:   Thu, 27 Jul 2023 13:28:40 -0400
From:   Gabriel Krisman Bertazi <krisman@...e.de>
To:     viro@...iv.linux.org.uk, brauner@...nel.org, tytso@....edu,
        ebiggers@...nel.org, jaegeuk@...nel.org
Cc:     linux-fsdevel@...r.kernel.org, linux-ext4@...r.kernel.org,
        linux-f2fs-devel@...ts.sourceforge.net,
        Gabriel Krisman Bertazi <krisman@...e.de>,
        Gabriel Krisman Bertazi <krisman@...labora.com>
Subject: [PATCH v4 4/7] libfs: Chain encryption checks after case-insensitive revalidation

From: Gabriel Krisman Bertazi <krisman@...labora.com>

Support encrypted dentries in generic_ci_d_revalidate by chaining
fscrypt_d_revalidate at the tail of the d_revalidate.  This allows
filesystem to just call generic_ci_d_revalidate and let it handle any
case-insensitive dentry (encrypted or not).

Signed-off-by: Gabriel Krisman Bertazi <krisman@...labora.com>

---
Changes since v2:
  - Enable negative dentries of encrypted filesystems (Eric)
---
 fs/libfs.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/libfs.c b/fs/libfs.c
index ed04c4dcc312..44c02993adb4 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -1513,7 +1513,7 @@ static inline int generic_ci_d_revalidate(struct dentry *dentry,
 			}
 		}
 	}
-	return 1;
+	return fscrypt_d_revalidate(dentry, flags);
 }
 
 static const struct dentry_operations generic_ci_dentry_ops = {
@@ -1533,7 +1533,7 @@ static const struct dentry_operations generic_encrypted_dentry_ops = {
 static const struct dentry_operations generic_encrypted_ci_dentry_ops = {
 	.d_hash = generic_ci_d_hash,
 	.d_compare = generic_ci_d_compare,
-	.d_revalidate = fscrypt_d_revalidate,
+	.d_revalidate_name = generic_ci_d_revalidate,
 };
 #endif
 
-- 
2.41.0