=== DF-0664 environment ===
Host uname: Linux 8748f8685296 6.12.85+deb13-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.12.85-1 (2026-04-30) x86_64 GNU/Linux
Cited file: sys/netgraph/ng_device.c

=== sys/conf/files entries for ng_device ===
1699:netgraph7/ng_device.c		optional netgraph7_device

=== Active netgraph7/ng_device.c ngdwrite (clean rewrite) ===
460:	if (uio->uio_resid == 0)
461-		return (0);
462-