diff mbox series

[v6,6/9] libfs: Chain encryption checks after case-insensitive revalidation

Message ID 20230816050803.15660-7-krisman@suse.de (mailing list archive)
State New, archived
Headers show
Series Support negative dentries on case-insensitive ext4 and f2fs | expand

Commit Message

Gabriel Krisman Bertazi Aug. 16, 2023, 5:08 a.m. UTC 
From: Gabriel Krisman Bertazi <krisman@collabora.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@collabora.com>

---
Changes since v2:
  - Enable negative dentries of encrypted filesystems (Eric)
---
 fs/libfs.c | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/fs/libfs.c b/fs/libfs.c
index 26bf1b832b0a..994e4c98ec07 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -1462,9 +1462,8 @@  static int generic_ci_d_hash(const struct dentry *dentry, struct qstr *str)
 	return 0;
 }
 
-static int generic_ci_d_revalidate(struct dentry *dentry,
-				   const struct qstr *name,
-				   unsigned int flags)
+static int ci_d_revalidate(struct dentry *dentry, const struct qstr *name,
+			   unsigned int flags)
 {
 	const struct dentry *parent;
 	const struct inode *dir;
@@ -1515,6 +1514,15 @@  static int generic_ci_d_revalidate(struct dentry *dentry,
 	return 1;
 }
 
+static int generic_ci_d_revalidate(struct dentry *dentry,
+				   const struct qstr *name,
+				   unsigned int flags)
+{
+	if (!ci_d_revalidate(dentry, name, flags))
+		return 0;
+	return fscrypt_d_revalidate(dentry, name, flags);
+}
+
 static const struct dentry_operations generic_ci_dentry_ops = {
 	.d_hash = generic_ci_d_hash,
 	.d_compare = generic_ci_d_compare,
@@ -1532,7 +1540,7 @@  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 = generic_ci_d_revalidate,
 };
 #endif