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From: <yang.yang29@zte.com.cn>
To: <dchickles@marvell.com>
Cc: <sburla@marvell.com>, <fmanlunas@marvell.com>,
	<davem@davemloft.net>, <edumazet@google.com>, <kuba@kernel.org>,
	<pabeni@redhat.com>, <netdev@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>, <xu.panda@zte.com.cn>,
	<yang.yang29@zte.com.cn>
Subject: [PATCH net-next v2] liquidio: use strscpy() to instead of strncpy()
Date: Fri, 9 Dec 2022 15:34:49 +0800 (CST)	[thread overview]
Message-ID: <202212091534493764895@zte.com.cn> (raw)

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>
---
change for v2
 - change the subject, replace linux-next with net-next.
---
 drivers/net/ethernet/cavium/liquidio/octeon_console.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_console.c b/drivers/net/ethernet/cavium/liquidio/octeon_console.c
index 28feabec8fbb..67c3570f875f 100644
--- a/drivers/net/ethernet/cavium/liquidio/octeon_console.c
+++ b/drivers/net/ethernet/cavium/liquidio/octeon_console.c
@@ -247,8 +247,7 @@ static const struct cvmx_bootmem_named_block_desc
 					struct cvmx_bootmem_named_block_desc,
 					size));

-		strncpy(desc->name, name, sizeof(desc->name));
-		desc->name[sizeof(desc->name) - 1] = 0;
+		strscpy(desc->name, name, sizeof(desc->name));
 		return &oct->bootmem_named_block_desc;
 	} else {
 		return NULL;
@@ -471,8 +470,8 @@ static void output_console_line(struct octeon_device *oct,
 	if (line != &console_buffer[bytes_read]) {
 		console_buffer[bytes_read] = '\0';
 		len = strlen(console->leftover);
-		strncpy(&console->leftover[len], line,
-			sizeof(console->leftover) - len);
+		strscpy(&console->leftover[len], line,
+			sizeof(console->leftover) - len + 1);
 	}
 }

-- 
2.15.2

             reply	other threads:[~2022-12-09  7:35 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-12-09  7:34 yang.yang29 [this message]
2022-12-09  9:01 ` [PATCH net-next v2] liquidio: use strscpy() to instead of strncpy() Jiri Pirko

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