linux-kernel - [PATCH v8 2/9] ext4: Use generic_ci_validate_strict

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Message-Id: <20241021-tonyk-tmpfs-v8-2-f443d5814194@igalia.com>
Date: Mon, 21 Oct 2024 13:37:18 -0300
From: André Almeida <andrealmeid@...lia.com>
To: Gabriel Krisman Bertazi <krisman@...nel.org>, 
 Alexander Viro <viro@...iv.linux.org.uk>, 
 Christian Brauner <brauner@...nel.org>, Jan Kara <jack@...e.cz>, 
 Theodore Ts'o <tytso@....edu>, Andreas Dilger <adilger.kernel@...ger.ca>, 
 Hugh Dickins <hughd@...gle.com>, Andrew Morton <akpm@...ux-foundation.org>, 
 Jonathan Corbet <corbet@....net>, smcv@...labora.com
Cc: kernel-dev@...lia.com, linux-fsdevel@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-ext4@...r.kernel.org, 
 linux-mm@...ck.org, linux-doc@...r.kernel.org, 
 Gabriel Krisman Bertazi <krisman@...e.de>, 
 André Almeida <andrealmeid@...lia.com>
Subject: [PATCH v8 2/9] ext4: Use generic_ci_validate_strict_name helper

Use the helper function to check the requirements for casefold
directories using strict encoding.

Suggested-by: Gabriel Krisman Bertazi <krisman@...e.de>
Signed-off-by: André Almeida <andrealmeid@...lia.com>
Acked-by: Theodore Ts'o <tytso@....edu>
Reviewed-by: Gabriel Krisman Bertazi <krisman@...e.de>
---
Changes from v4:
- Now we can drop the if IS_ENABLED() guard
---
 fs/ext4/namei.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 790db7eac6c2ad5e1790e363e4ac273162e35013..612ccbeb493b8d901c123221ef6573457193dd16 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -2395,11 +2395,8 @@ static int ext4_add_entry(handle_t *handle, struct dentry *dentry,
 	if (fscrypt_is_nokey_name(dentry))
 		return -ENOKEY;
 
-#if IS_ENABLED(CONFIG_UNICODE)
-	if (sb_has_strict_encoding(sb) && IS_CASEFOLDED(dir) &&
-	    utf8_validate(sb->s_encoding, &dentry->d_name))
+	if (!generic_ci_validate_strict_name(dir, &dentry->d_name))
 		return -EINVAL;
-#endif
 
 	retval = ext4_fname_setup_filename(dir, &dentry->d_name, 0, &fname);
 	if (retval)

-- 
2.47.0