libgo/go/syscall/bpf_darwin.go

   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 }