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From:   Azeem Shaikh <azeemshaikh38@gmail.com>
To:     Sakari Ailus <sakari.ailus@iki.fi>
Cc:     linux-hardening@vger.kernel.org,
        Azeem Shaikh <azeemshaikh38@gmail.com>,
        linux-leds@vger.kernel.org, linux-kernel@vger.kernel.org,
        Sakari Ailus <sakari.ailus@linux.intel.com>,
        Pavel Machek <pavel@ucw.cz>, Lee Jones <lee@kernel.org>
Subject: [PATCH] i2c: Replace all non-returning strlcpy with strscpy
Date:   Tue, 23 May 2023 02:11:50 +0000
Message-ID: <20230523021150.2406032-1-azeemshaikh38@gmail.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

strlcpy() reads the entire source buffer first.
This read may exceed the destination size limit.
This is both inefficient and can lead to linear read
overflows if a source string is not NUL-terminated [1].
In an effort to remove strlcpy() completely [2], replace
strlcpy() here with strscpy().
No return values were used, so direct replacement is safe.

[1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strlcpy
[2] https://github.com/KSPP/linux/issues/89

Signed-off-by: Azeem Shaikh <azeemshaikh38@gmail.com>
---
 drivers/leds/flash/leds-as3645a.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/leds/flash/leds-as3645a.c b/drivers/leds/flash/leds-as3645a.c
index bb2249771acb..7dc574b18f5f 100644
--- a/drivers/leds/flash/leds-as3645a.c
+++ b/drivers/leds/flash/leds-as3645a.c
@@ -651,8 +651,8 @@ static int as3645a_v4l2_setup(struct as3645a *flash)
 		},
 	};
 
-	strlcpy(cfg.dev_name, led->dev->kobj.name, sizeof(cfg.dev_name));
-	strlcpy(cfgind.dev_name, flash->iled_cdev.dev->kobj.name,
+	strscpy(cfg.dev_name, led->dev->kobj.name, sizeof(cfg.dev_name));
+	strscpy(cfgind.dev_name, flash->iled_cdev.dev->kobj.name,
 		sizeof(cfgind.dev_name));
 
 	flash->vf = v4l2_flash_init(