linux-hardening - [PATCH] ACPI / sysfs: Replace deprecated strcpy() with sysfs

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Message-ID: <20250624142134.11317-1-listout@listout.xyz>
Date: Tue, 24 Jun 2025 19:51:34 +0530
From: Brahmajit Das <listout@...tout.xyz>
To: linux-hardening@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-acpi@...r.kernel.org
Cc: rafael@...nel.org,
	lenb@...nel.org,
	lv.zheng@...el.com,
	kees@...nel.org,
	rui.zhang@...el.com,
	len.brown@...el.com
Subject: [PATCH] ACPI / sysfs: Replace deprecated strcpy() with sysfs_emit

strcpy() is deprecated; use sysfs_emit() instead. No functional changes
intended.

Link: https://github.com/KSPP/linux/issues/88
Signed-off-by: Brahmajit Das <listout@...tout.xyz>
---
 drivers/acpi/sysfs.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/acpi/sysfs.c b/drivers/acpi/sysfs.c
index a48ebbf768f9..7ce90998ab97 100644
--- a/drivers/acpi/sysfs.c
+++ b/drivers/acpi/sysfs.c
@@ -181,10 +181,9 @@ static int param_set_trace_method_name(const char *val,
 
 	/* This is a hack.  We can't kmalloc in early boot. */
 	if (is_abs_path)
-		strcpy(trace_method_name, val);
+		sysfs_emit(trace_method_name, "%s", val);
 	else {
-		trace_method_name[0] = '\\';
-		strcpy(trace_method_name+1, val);
+		sysfs_emit(trace_method_name, "\%s", val);
 	}
 
 	/* Restore the original tracer state */
-- 
2.50.0