[PATCH v5 07/10] libfs: Chain encryption checks after case-insensitive revalidation
From: Gabriel Krisman Bertazi <hidden>
Date: 2023-08-12 00:42:29
Also in:
linux-f2fs-devel, linux-fsdevel
Subsystem:
filesystems (vfs and infrastructure), the rest · Maintainers:
Alexander Viro, Christian Brauner, Linus Torvalds
From: Gabriel Krisman Bertazi <redacted> 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 <redacted> --- Changes since v2: - Enable negative dentries of encrypted filesystems (Eric) --- fs/libfs.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-)
diff --git a/fs/libfs.c b/fs/libfs.c
index cb98c4721327..efb245118d10 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c@@ -1452,9 +1452,8 @@ 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;
@@ -1508,6 +1507,15 @@ 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,
@@ -1525,7 +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 = generic_ci_d_revalidate, }; #endif
--
2.41.0