linux-kernel - [PATCH] dma-buf: use strscpy() is more robust and safer

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Date:   Fri, 16 Sep 2022 06:31:52 +0000
From:   cgel.zte@...il.com
To:     sumit.semwal@...aro.org
Cc:     christian.koenig@....com, linux-media@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, linaro-mm-sig@...ts.linaro.org,
        linux-kernel@...r.kernel.org, Minghao Chi <chi.minghao@....com.cn>
Subject: [PATCH] dma-buf: use strscpy() is more robust and safer

From: Minghao Chi <chi.minghao@....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: Minghao Chi <chi.minghao@....com.cn>
---
 drivers/dma-buf/dma-buf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
index dd0f83ee505b..51cdd4060539 100644
--- a/drivers/dma-buf/dma-buf.c
+++ b/drivers/dma-buf/dma-buf.c
@@ -50,7 +50,7 @@ static char *dmabuffs_dname(struct dentry *dentry, char *buffer, int buflen)
 	dmabuf = dentry->d_fsdata;
 	spin_lock(&dmabuf->name_lock);
 	if (dmabuf->name)
-		ret = strlcpy(name, dmabuf->name, DMA_BUF_NAME_LEN);
+		ret = strscpy(name, dmabuf->name, DMA_BUF_NAME_LEN);
 	spin_unlock(&dmabuf->name_lock);
 
 	return dynamic_dname(buffer, buflen, "/%s:%s",
-- 
2.25.1