[PATCH 2/2] scsi: target: tcmu: Replace strlcpy with strscpy

[Azeem Shaikh]

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@xxxxxxxxx>
---
 drivers/target/target_core_user.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/target/target_core_user.c b/drivers/target/target_core_user.c
index 15ffc8d2ac7b..22cc6cac0ba2 100644
--- a/drivers/target/target_core_user.c
+++ b/drivers/target/target_core_user.c
@@ -2820,14 +2820,14 @@ static ssize_t tcmu_dev_config_store(struct config_item *item, const char *page,
 			pr_err("Unable to reconfigure device\n");
 			return ret;
 		}
-		strlcpy(udev->dev_config, page, TCMU_CONFIG_LEN);
+		strscpy(udev->dev_config, page, TCMU_CONFIG_LEN);
 
 		ret = tcmu_update_uio_info(udev);
 		if (ret)
 			return ret;
 		return count;
 	}
-	strlcpy(udev->dev_config, page, TCMU_CONFIG_LEN);
+	strscpy(udev->dev_config, page, TCMU_CONFIG_LEN);
 
 	return count;
 }
-- 
2.41.0.162.gfafddb0af9-goog