STRLCPY/tun2socks

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core/device/tun/tun_wireguard_linux.go

1	+	//go:build linux && !(amd64 \|\| arm64)
2	+
3	+	package tun
4	+
5	+	import (
6	+	"unsafe"
7	+	)
8	+
9	+	const (
10	+	virtioNetHdrLen = int(unsafe.Sizeof(virtioNetHdr{}))
11	+	offset = virtioNetHdrLen + 0 /* NO_PI */
12	+	defaultMTU = 1500
13	+	)
14	+
15	+	// virtioNetHdr is defined in the kernel in include/uapi/linux/virtio_net.h. The
16	+	// kernel symbol is virtio_net_hdr.
17	+	type virtioNetHdr struct {
18	+	flags uint8
19	+	gsoType uint8
20	+	hdrLen uint16
21	+	gsoSize uint16
22	+	csumStart uint16
23	+	csumOffset uint16
24	+	}
25	+

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core/device/tun/tun_wireguard_unix.go