Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Date:   Sat, 3 Dec 2022 14:21:28 +0800 (CST)
Message-ID: <202212031421285953755@zte.com.cn>
Mime-Version: 1.0
From:   <yang.yang29@zte.com.cn>
To:     <w.d.hubbs@gmail.com>
Cc:     <chris@the-brannons.com>, <kirk@reisers.ca>,
        <samuel.thibault@ens-lyon.org>, <mushi.shar@gmail.com>,
        <speakup@linux-speakup.org>, <linux-kernel@vger.kernel.org>,
        <xu.panda@zte.com.cn>, <yang.yang29@zte.com.cn>
Subject: =?UTF-8?B?W1BBVENIIGxpbnV4LW5leHRdIGFjY2Vzc2liaWxpdHk6IHNwZWFrdXA6IHVzZSBzdHJzY3B5KCkgdG8gaW5zdGVhZCBvZiBzdHJuY3B5KCk=?=
Content-Type: text/plain;
        charset="UTF-8"
Precedence: bulk

From: Xu Panda <xu.panda@zte.com.cn>

The implementation of strscpy() is more robust and safer.
That's now the recommended way to copy NUL terminated strings.

Signed-off-by: Xu Panda <xu.panda@zte.com.cn>
Signed-off-by: Yang Yang <yang.yang29@zte.com>
---
 drivers/accessibility/speakup/kobjects.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/accessibility/speakup/kobjects.c b/drivers/accessibility/speakup/kobjects.c
index a7522d409802..273c076b661a 100644
--- a/drivers/accessibility/speakup/kobjects.c
+++ b/drivers/accessibility/speakup/kobjects.c
@@ -426,8 +426,7 @@ static ssize_t synth_direct_store(struct kobject *kobj,
 	spin_lock_irqsave(&speakup_info.spinlock, flags);
 	while (len > 0) {
 		bytes = min_t(size_t, len, 250);
-		strncpy(tmp, ptr, bytes);
-		tmp[bytes] = '\0';
+		strscpy(tmp, ptr, bytes);
 		string_unescape_any_inplace(tmp);
 		synth_printf("%s", tmp);
 		ptr += bytes;
-- 
2.15.2