ipmi: ssif: replace strlcpy with strscpy

The strlcpy should not be used because it doesn't limit the source
length. So that it will lead some potential bugs.

But the strscpy doesn't require reading memory from the src string
beyond the specified "count" bytes, and since the return value is
easier to error-check than strlcpy()'s. In addition, the implementation
is robust to the string changing out from underneath it, unlike the
current strlcpy() implementation.

Thus, replace strlcpy with strscpy.

Signed-off-by: Jason Wang <wangborong@cdjrlc.com>
Message-Id: <20211222032707.1912186-1-wangborong@cdjrlc.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>

diff --git a/drivers/char/ipmi/ipmi_ssif.c b/drivers/char/ipmi/ipmi_ssif.c
index 48aab77abebf1f0d55236ec6fc223d004ec944d7..ba779f1abb5b2a9044e14f0c996e09823dd61b46 100644 (file)
--- a/drivers/char/ipmi/ipmi_ssif.c
+++ b/drivers/char/ipmi/ipmi_ssif.c
@@ -1354,7 +1354,7 @@ static int ssif_detect(struct i2c_client *client, struct i2c_board_info *info)
        if (rv)
                rv = -ENODEV;
        else
-               strlcpy(info->type, DEVICE_NAME, I2C_NAME_SIZE);
+               strscpy(info->type, DEVICE_NAME, I2C_NAME_SIZE);
        kfree(resp);
        return rv;
 }