linux-kernel - [PATCH] mtd: move from strlcpy with unused retval to strscpy

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Date:   Thu, 18 Aug 2022 23:00:33 +0200
From:   Wolfram Sang <wsa+renesas@...g-engineering.com>
To:     linux-kernel@...r.kernel.org
Cc:     Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Joern Engel <joern@...ybastard.org>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        linux-mtd@...ts.infradead.org
Subject: [PATCH] mtd: move from strlcpy with unused retval to strscpy

Follow the advice of the below link and prefer 'strscpy' in this
subsystem. Conversion is 1:1 because the return value is not used.
Generated by a coccinelle script.

Link: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/
Signed-off-by: Wolfram Sang <wsa+renesas@...g-engineering.com>
---
 drivers/mtd/devices/block2mtd.c   | 2 +-
 drivers/mtd/parsers/cmdlinepart.c | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/mtd/devices/block2mtd.c b/drivers/mtd/devices/block2mtd.c
index 40d7211485da..4cd37ec45762 100644
--- a/drivers/mtd/devices/block2mtd.c
+++ b/drivers/mtd/devices/block2mtd.c
@@ -461,7 +461,7 @@ static int block2mtd_setup(const char *val, const struct kernel_param *kp)
 	   the device (even kmalloc() fails). Deter that work to
 	   block2mtd_setup2(). */
 
-	strlcpy(block2mtd_paramline, val, sizeof(block2mtd_paramline));
+	strscpy(block2mtd_paramline, val, sizeof(block2mtd_paramline));
 
 	return 0;
 #endif
diff --git a/drivers/mtd/parsers/cmdlinepart.c b/drivers/mtd/parsers/cmdlinepart.c
index 0ddff1a4b51f..b34856def816 100644
--- a/drivers/mtd/parsers/cmdlinepart.c
+++ b/drivers/mtd/parsers/cmdlinepart.c
@@ -193,7 +193,7 @@ static struct mtd_partition * newpart(char *s,
 	parts[this_part].mask_flags = mask_flags;
 	parts[this_part].add_flags = add_flags;
 	if (name)
-		strlcpy(extra_mem, name, name_len + 1);
+		strscpy(extra_mem, name, name_len + 1);
 	else
 		sprintf(extra_mem, "Partition_%03d", this_part);
 	parts[this_part].name = extra_mem;
@@ -298,7 +298,7 @@ static int mtdpart_setup_real(char *s)
 		this_mtd->parts = parts;
 		this_mtd->num_parts = num_parts;
 		this_mtd->mtd_id = (char*)(this_mtd + 1);
-		strlcpy(this_mtd->mtd_id, mtd_id, mtd_id_len + 1);
+		strscpy(this_mtd->mtd_id, mtd_id, mtd_id_len + 1);
 
 		/* link into chain */
 		this_mtd->next = partitions;
-- 
2.35.1