1// Copyright 2018 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5// Berkeley packet filter for Darwin
6
7package syscall
8
9import (
10	"unsafe"
11)
12
13// Deprecated: Use golang.org/x/net/bpf instead.
14func BpfStmt(code, k int) *BpfInsn {
15	return &BpfInsn{Code: uint16(code), K: uint32(k)}
16}
17
18// Deprecated: Use golang.org/x/net/bpf instead.
19func BpfJump(code, k, jt, jf int) *BpfInsn {
20	return &BpfInsn{Code: uint16(code), Jt: uint8(jt), Jf: uint8(jf), K: uint32(k)}
21}
22
23// Deprecated: Use golang.org/x/net/bpf instead.
24func BpfBuflen(fd int) (int, error) {
25	var l int
26	err := ioctlPtr(fd, BIOCGBLEN, unsafe.Pointer(&l))
27	if err != nil {
28		return 0, err
29	}
30	return l, nil
31}
32
33// Deprecated: Use golang.org/x/net/bpf instead.
34func SetBpfBuflen(fd, l int) (int, error) {
35	err := ioctlPtr(fd, BIOCSBLEN, unsafe.Pointer(&l))
36	if err != nil {
37		return 0, err
38	}
39	return l, nil
40}
41
42// Deprecated: Use golang.org/x/net/bpf instead.
43func BpfDatalink(fd int) (int, error) {
44	var t int
45	err := ioctlPtr(fd, BIOCGDLT, unsafe.Pointer(&t))
46	if err != nil {
47		return 0, err
48	}
49	return t, nil
50}
51
52// Deprecated: Use golang.org/x/net/bpf instead.
53func SetBpfDatalink(fd, t int) (int, error) {
54	err := ioctlPtr(fd, BIOCSDLT, unsafe.Pointer(&t))
55	if err != nil {
56		return 0, err
57	}
58	return t, nil
59}
60
61// Deprecated: Use golang.org/x/net/bpf instead.
62func SetBpfPromisc(fd, m int) error {
63	err := ioctlPtr(fd, BIOCPROMISC, unsafe.Pointer(&m))
64	if err != nil {
65		return err
66	}
67	return nil
68}
69
70// Deprecated: Use golang.org/x/net/bpf instead.
71func FlushBpf(fd int) error {
72	err := ioctlPtr(fd, BIOCFLUSH, nil)
73	if err != nil {
74		return err
75	}
76	return nil
77}
78
79type ivalue struct {
80	name  [IFNAMSIZ]byte
81	value int16
82}
83
84// Deprecated: Use golang.org/x/net/bpf instead.
85func BpfInterface(fd int, name string) (string, error) {
86	var iv ivalue
87	err := ioctlPtr(fd, BIOCGETIF, unsafe.Pointer(&iv))
88	if err != nil {
89		return "", err
90	}
91	return name, nil
92}
93
94// Deprecated: Use golang.org/x/net/bpf instead.
95func SetBpfInterface(fd int, name string) error {
96	var iv ivalue
97	copy(iv.name[:], []byte(name))
98	err := ioctlPtr(fd, BIOCSETIF, unsafe.Pointer(&iv))
99	if err != nil {
100		return err
101	}
102	return nil
103}
104
105// Deprecated: Use golang.org/x/net/bpf instead.
106func BpfTimeout(fd int) (*Timeval, error) {
107	var tv Timeval
108	err := ioctlPtr(fd, BIOCGRTIMEOUT, unsafe.Pointer(&tv))
109	if err != nil {
110		return nil, err
111	}
112	return &tv, nil
113}
114
115// Deprecated: Use golang.org/x/net/bpf instead.
116func SetBpfTimeout(fd int, tv *Timeval) error {
117	err := ioctlPtr(fd, BIOCSRTIMEOUT, unsafe.Pointer(tv))
118	if err != nil {
119		return err
120	}
121	return nil
122}
123
124// Deprecated: Use golang.org/x/net/bpf instead.
125func BpfStats(fd int) (*BpfStat, error) {
126	var s BpfStat
127	err := ioctlPtr(fd, BIOCGSTATS, unsafe.Pointer(&s))
128	if err != nil {
129		return nil, err
130	}
131	return &s, nil
132}
133
134// Deprecated: Use golang.org/x/net/bpf instead.
135func SetBpfImmediate(fd, m int) error {
136	err := ioctlPtr(fd, BIOCIMMEDIATE, unsafe.Pointer(&m))
137	if err != nil {
138		return err
139	}
140	return nil
141}
142
143// Deprecated: Use golang.org/x/net/bpf instead.
144func SetBpf(fd int, i []BpfInsn) error {
145	var p BpfProgram
146	p.Len = uint32(len(i))
147	p.Insns = (*BpfInsn)(unsafe.Pointer(&i[0]))
148	err := ioctlPtr(fd, BIOCSETF, unsafe.Pointer(&p))
149	if err != nil {
150		return err
151	}
152	return nil
153}
154
155// Deprecated: Use golang.org/x/net/bpf instead.
156func CheckBpfVersion(fd int) error {
157	var v BpfVersion
158	err := ioctlPtr(fd, BIOCVERSION, unsafe.Pointer(&v))
159	if err != nil {
160		return err
161	}
162	if v.Major != BPF_MAJOR_VERSION || v.Minor != BPF_MINOR_VERSION {
163		return EINVAL
164	}
165	return nil
166}
167
168// Deprecated: Use golang.org/x/net/bpf instead.
169func BpfHeadercmpl(fd int) (int, error) {
170	var f int
171	err := ioctlPtr(fd, BIOCGHDRCMPLT, unsafe.Pointer(&f))
172	if err != nil {
173		return 0, err
174	}
175	return f, nil
176}
177
178// Deprecated: Use golang.org/x/net/bpf instead.
179func SetBpfHeadercmpl(fd, f int) error {
180	err := ioctlPtr(fd, BIOCSHDRCMPLT, unsafe.Pointer(&f))
181	if err != nil {
182		return err
183	}
184	return nil
185}
186