linux-kernel - [PATCH linux-next] fs/super.c: use strscpy() is more robust and safer

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Date:   Thu, 20 Oct 2022 03:09:15 +0000
From:   cuijinpeng666@...il.com
To:     viro@...iv.linux.org.uk
Cc:     linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jinpeng Cui <cui.jinpeng2@....com.cn>,
        Zeal Robot <zealci@....com.cn>
Subject: [PATCH linux-next] fs/super.c: use strscpy() is more robust and safer

From: Jinpeng Cui <cui.jinpeng2@....com.cn>

The implementation of strscpy() is more robust and safer.

Reported-by: Zeal Robot <zealci@....com.cn>
Signed-off-by: Jinpeng Cui <cui.jinpeng2@....com.cn>
---
 fs/super.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/super.c b/fs/super.c
index 8d39e4f11cfa..ca791da59c98 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -574,7 +574,7 @@ struct super_block *sget_fc(struct fs_context *fc,
 	fc->s_fs_info = NULL;
 	s->s_type = fc->fs_type;
 	s->s_iflags |= fc->s_iflags;
-	strlcpy(s->s_id, s->s_type->name, sizeof(s->s_id));
+	strscpy(s->s_id, s->s_type->name, sizeof(s->s_id));
 	list_add_tail(&s->s_list, &super_blocks);
 	hlist_add_head(&s->s_instances, &s->s_type->fs_supers);
 	spin_unlock(&sb_lock);
@@ -653,7 +653,7 @@ struct super_block *sget(struct file_system_type *type,
 		return ERR_PTR(err);
 	}
 	s->s_type = type;
-	strlcpy(s->s_id, type->name, sizeof(s->s_id));
+	strscpy(s->s_id, type->name, sizeof(s->s_id));
 	list_add_tail(&s->s_list, &super_blocks);
 	hlist_add_head(&s->s_instances, &type->fs_supers);
 	spin_unlock(&sb_lock);
-- 
2.25.1