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can: ucan: use strscpy() to instead of strncpy()

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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>
Link: https://lore.kernel.org/all/202212070909095189693@zte.com.cn
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Xu Panda 2022-12-07 09:09:09 +08:00 committed by Marc Kleine-Budde
parent 5425094a39
commit 7fdaf8966a
1 changed files with 2 additions and 3 deletions
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5
drivers/net/can/usb/ucan.c
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@ -1534,9 +1534,8 @@ static int ucan_probe(struct usb_interface *intf,
sizeof(union ucan_ctl_payload));
if (ret > 0) {
/* copy string while ensuring zero termination */
strncpy(firmware_str, up->ctl_msg_buffer->raw,
sizeof(union ucan_ctl_payload));
firmware_str[sizeof(union ucan_ctl_payload)] = '\0';
strscpy(firmware_str, up->ctl_msg_buffer->raw,
sizeof(union ucan_ctl_payload) + 1);
} else {
strcpy(firmware_str, "unknown");
}