linux-kernel - [PATCH 1/2] ocfs2: Replace deprecated strcpy in ocfs2_create_xattr

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Message-ID: <20251118185345.132411-2-thorsten.blum@linux.dev>
Date: Tue, 18 Nov 2025 19:53:44 +0100
From: Thorsten Blum <thorsten.blum@...ux.dev>
To: Mark Fasheh <mark@...heh.com>,
	Joel Becker <jlbec@...lplan.org>,
	Joseph Qi <joseph.qi@...ux.alibaba.com>
Cc: Thorsten Blum <thorsten.blum@...ux.dev>,
	ocfs2-devel@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] ocfs2: Replace deprecated strcpy in ocfs2_create_xattr_block

strcpy() has been deprecated [1] because it performs no bounds checking
on the destination buffer, which can lead to buffer overflows. Replace
it with the safer strscpy(), and copy directly into '->xb_signature'
instead of using the start of the struct as the destination buffer.

Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strcpy [1]
Signed-off-by: Thorsten Blum <thorsten.blum@...ux.dev>
---
 fs/ocfs2/xattr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
index d70a20d29e3e..73c028f452ac 100644
--- a/fs/ocfs2/xattr.c
+++ b/fs/ocfs2/xattr.c
@@ -2908,7 +2908,7 @@ static int ocfs2_create_xattr_block(struct inode *inode,
 	/* Initialize ocfs2_xattr_block */
 	xblk = (struct ocfs2_xattr_block *)new_bh->b_data;
 	memset(xblk, 0, inode->i_sb->s_blocksize);
-	strcpy((void *)xblk, OCFS2_XATTR_BLOCK_SIGNATURE);
+	strscpy(xblk->xb_signature, OCFS2_XATTR_BLOCK_SIGNATURE);
 	xblk->xb_suballoc_slot = cpu_to_le16(ctxt->meta_ac->ac_alloc_slot);
 	xblk->xb_suballoc_loc = cpu_to_le64(suballoc_loc);
 	xblk->xb_suballoc_bit = cpu_to_le16(suballoc_bit_start);
-- 
2.51.1