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| 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 | + |
| 7 | +package syscall |
| 8 | + |
| 9 | +import ( |
| 10 | + "unsafe" |
| 11 | +) |
| 12 | + |
| 13 | +// Deprecated: Use golang.org/x/net/bpf instead. |
| 14 | +func 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. |
| 19 | +func 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. |
| 24 | +func 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. |
| 34 | +func 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. |
| 43 | +func 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. |
| 53 | +func 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. |
| 62 | +func 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. |
| 71 | +func FlushBpf(fd int) error { |
| 72 | + err := ioctlPtr(fd, BIOCFLUSH, nil) |
| 73 | + if err != nil { |
| 74 | + return err |
| 75 | + } |
| 76 | + return nil |
| 77 | +} |
| 78 | + |
| 79 | +type ivalue struct { |
| 80 | + name [IFNAMSIZ]byte |
| 81 | + value int16 |
| 82 | +} |
| 83 | + |
| 84 | +// Deprecated: Use golang.org/x/net/bpf instead. |
| 85 | +func 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. |
| 95 | +func 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. |
| 106 | +func 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. |
| 116 | +func 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. |
| 125 | +func 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. |
| 135 | +func 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. |
| 144 | +func 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. |
| 156 | +func 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. |
| 169 | +func 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. |
| 179 | +func 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 | +} |
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