From 60be0d71daab4247dc61c323777b0c593eb76975 Mon Sep 17 00:00:00 2001
From: Maxim Sobolev <sobomax@FreeBSD.org>
Date: Tue, 23 Sep 2025 09:24:44 -0700
Subject: [PATCH] mksnap_ffs: fix running unded chroot

Fix "run-under-chroot" workaround by replacing strlcpy(2) with
memmove(2) since strings overlap.

MFC after:	1 week
Reviewed by:	arrowd
Differential Revision:	https://reviews.freebsd.org/D52670
---
 sbin/mksnap_ffs/mksnap_ffs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sbin/mksnap_ffs/mksnap_ffs.c b/sbin/mksnap_ffs/mksnap_ffs.c
index 0d8e32a15ab..58939cc6902 100644
--- a/sbin/mksnap_ffs/mksnap_ffs.c
+++ b/sbin/mksnap_ffs/mksnap_ffs.c
@@ -150,7 +150,7 @@ main(int argc, char **argv)
 			errx(1, "%s: Not a mount point", stfsbuf.f_mntonname);
 	}
 	if (cp != stfsbuf.f_mntonname)
-		strlcpy(stfsbuf.f_mntonname, cp, sizeof(stfsbuf.f_mntonname));
+		memmove(stfsbuf.f_mntonname, cp, strlen(cp) + 1);
 
 	/*
 	 * Having verified access to the directory in which the