author | Mikael Berthe <mikael@lilotux.net> |
Sat, 04 Feb 2023 12:58:35 +0100 | |
changeset 265 | 05c40b36d3b2 |
parent 262 | 8d3354485fc3 |
permissions | -rw-r--r-- |
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1 |
// Copyright 2009 The Go Authors. All rights reserved. |
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2 |
// Use of this source code is governed by a BSD-style |
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3 |
// license that can be found in the LICENSE file. |
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4 |
|
256 | 5 |
//go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris |
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6 |
// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris |
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7 |
|
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8 |
package unix |
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9 |
|
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10 |
import ( |
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11 |
"bytes" |
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12 |
"sort" |
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13 |
"sync" |
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14 |
"syscall" |
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15 |
"unsafe" |
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16 |
) |
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17 |
|
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18 |
var ( |
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19 |
Stdin = 0 |
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20 |
Stdout = 1 |
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21 |
Stderr = 2 |
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22 |
) |
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23 |
|
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24 |
// Do the interface allocations only once for common |
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25 |
// Errno values. |
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26 |
var ( |
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27 |
errEAGAIN error = syscall.EAGAIN |
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28 |
errEINVAL error = syscall.EINVAL |
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29 |
errENOENT error = syscall.ENOENT |
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30 |
) |
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31 |
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251 | 32 |
var ( |
33 |
signalNameMapOnce sync.Once |
|
34 |
signalNameMap map[string]syscall.Signal |
|
35 |
) |
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36 |
||
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// errnoErr returns common boxed Errno values, to prevent |
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38 |
// allocations at runtime. |
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39 |
func errnoErr(e syscall.Errno) error { |
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40 |
switch e { |
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41 |
case 0: |
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42 |
return nil |
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43 |
case EAGAIN: |
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44 |
return errEAGAIN |
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45 |
case EINVAL: |
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46 |
return errEINVAL |
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47 |
case ENOENT: |
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48 |
return errENOENT |
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49 |
} |
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50 |
return e |
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51 |
} |
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52 |
|
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53 |
// ErrnoName returns the error name for error number e. |
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54 |
func ErrnoName(e syscall.Errno) string { |
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55 |
i := sort.Search(len(errorList), func(i int) bool { |
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56 |
return errorList[i].num >= e |
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57 |
}) |
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58 |
if i < len(errorList) && errorList[i].num == e { |
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59 |
return errorList[i].name |
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60 |
} |
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61 |
return "" |
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62 |
} |
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63 |
|
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64 |
// SignalName returns the signal name for signal number s. |
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65 |
func SignalName(s syscall.Signal) string { |
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66 |
i := sort.Search(len(signalList), func(i int) bool { |
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67 |
return signalList[i].num >= s |
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68 |
}) |
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69 |
if i < len(signalList) && signalList[i].num == s { |
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70 |
return signalList[i].name |
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71 |
} |
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72 |
return "" |
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73 |
} |
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74 |
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251 | 75 |
// SignalNum returns the syscall.Signal for signal named s, |
76 |
// or 0 if a signal with such name is not found. |
|
77 |
// The signal name should start with "SIG". |
|
78 |
func SignalNum(s string) syscall.Signal { |
|
79 |
signalNameMapOnce.Do(func() { |
|
256 | 80 |
signalNameMap = make(map[string]syscall.Signal, len(signalList)) |
251 | 81 |
for _, signal := range signalList { |
82 |
signalNameMap[signal.name] = signal.num |
|
83 |
} |
|
84 |
}) |
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85 |
return signalNameMap[s] |
|
86 |
} |
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87 |
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88 |
// clen returns the index of the first NULL byte in n or len(n) if n contains no NULL byte. |
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89 |
func clen(n []byte) int { |
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90 |
i := bytes.IndexByte(n, 0) |
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91 |
if i == -1 { |
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92 |
i = len(n) |
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93 |
} |
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94 |
return i |
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95 |
} |
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96 |
|
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97 |
// Mmap manager, for use by operating system-specific implementations. |
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98 |
|
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99 |
type mmapper struct { |
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100 |
sync.Mutex |
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101 |
active map[*byte][]byte // active mappings; key is last byte in mapping |
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102 |
mmap func(addr, length uintptr, prot, flags, fd int, offset int64) (uintptr, error) |
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103 |
munmap func(addr uintptr, length uintptr) error |
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104 |
} |
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105 |
|
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106 |
func (m *mmapper) Mmap(fd int, offset int64, length int, prot int, flags int) (data []byte, err error) { |
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107 |
if length <= 0 { |
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108 |
return nil, EINVAL |
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109 |
} |
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110 |
|
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111 |
// Map the requested memory. |
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112 |
addr, errno := m.mmap(0, uintptr(length), prot, flags, fd, offset) |
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113 |
if errno != nil { |
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114 |
return nil, errno |
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115 |
} |
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116 |
|
256 | 117 |
// Use unsafe to convert addr into a []byte. |
262 | 118 |
b := unsafe.Slice((*byte)(unsafe.Pointer(addr)), length) |
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119 |
|
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120 |
// Register mapping in m and return it. |
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121 |
p := &b[cap(b)-1] |
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122 |
m.Lock() |
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123 |
defer m.Unlock() |
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124 |
m.active[p] = b |
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125 |
return b, nil |
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126 |
} |
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127 |
|
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128 |
func (m *mmapper) Munmap(data []byte) (err error) { |
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129 |
if len(data) == 0 || len(data) != cap(data) { |
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130 |
return EINVAL |
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131 |
} |
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132 |
|
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133 |
// Find the base of the mapping. |
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134 |
p := &data[cap(data)-1] |
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135 |
m.Lock() |
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136 |
defer m.Unlock() |
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137 |
b := m.active[p] |
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138 |
if b == nil || &b[0] != &data[0] { |
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139 |
return EINVAL |
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140 |
} |
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141 |
|
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diff
changeset
|
142 |
// Unmap the memory and update m. |
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parents:
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|
143 |
if errno := m.munmap(uintptr(unsafe.Pointer(&b[0])), uintptr(len(b))); errno != nil { |
2a9ec03fe5a1
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|
144 |
return errno |
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parents:
diff
changeset
|
145 |
} |
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|
146 |
delete(m.active, p) |
2a9ec03fe5a1
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|
147 |
return nil |
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changeset
|
148 |
} |
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changeset
|
149 |
|
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changeset
|
150 |
func Read(fd int, p []byte) (n int, err error) { |
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|
151 |
n, err = read(fd, p) |
2a9ec03fe5a1
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|
152 |
if raceenabled { |
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|
153 |
if n > 0 { |
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changeset
|
154 |
raceWriteRange(unsafe.Pointer(&p[0]), n) |
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|
155 |
} |
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|
156 |
if err == nil { |
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changeset
|
157 |
raceAcquire(unsafe.Pointer(&ioSync)) |
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changeset
|
158 |
} |
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changeset
|
159 |
} |
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|
160 |
return |
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changeset
|
161 |
} |
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changeset
|
162 |
|
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changeset
|
163 |
func Write(fd int, p []byte) (n int, err error) { |
2a9ec03fe5a1
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changeset
|
164 |
if raceenabled { |
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|
165 |
raceReleaseMerge(unsafe.Pointer(&ioSync)) |
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|
166 |
} |
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changeset
|
167 |
n, err = write(fd, p) |
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changeset
|
168 |
if raceenabled && n > 0 { |
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|
169 |
raceReadRange(unsafe.Pointer(&p[0]), n) |
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|
170 |
} |
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|
171 |
return |
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|
172 |
} |
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|
173 |
|
260 | 174 |
func Pread(fd int, p []byte, offset int64) (n int, err error) { |
175 |
n, err = pread(fd, p, offset) |
|
176 |
if raceenabled { |
|
177 |
if n > 0 { |
|
178 |
raceWriteRange(unsafe.Pointer(&p[0]), n) |
|
179 |
} |
|
180 |
if err == nil { |
|
181 |
raceAcquire(unsafe.Pointer(&ioSync)) |
|
182 |
} |
|
183 |
} |
|
184 |
return |
|
185 |
} |
|
186 |
||
187 |
func Pwrite(fd int, p []byte, offset int64) (n int, err error) { |
|
188 |
if raceenabled { |
|
189 |
raceReleaseMerge(unsafe.Pointer(&ioSync)) |
|
190 |
} |
|
191 |
n, err = pwrite(fd, p, offset) |
|
192 |
if raceenabled && n > 0 { |
|
193 |
raceReadRange(unsafe.Pointer(&p[0]), n) |
|
194 |
} |
|
195 |
return |
|
196 |
} |
|
197 |
||
242
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|
198 |
// For testing: clients can set this flag to force |
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changeset
|
199 |
// creation of IPv6 sockets to return EAFNOSUPPORT. |
2a9ec03fe5a1
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|
200 |
var SocketDisableIPv6 bool |
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|
201 |
|
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diff
changeset
|
202 |
// Sockaddr represents a socket address. |
2a9ec03fe5a1
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|
203 |
type Sockaddr interface { |
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|
204 |
sockaddr() (ptr unsafe.Pointer, len _Socklen, err error) // lowercase; only we can define Sockaddrs |
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|
205 |
} |
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|
206 |
|
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Mikael Berthe <mikael@lilotux.net>
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diff
changeset
|
207 |
// SockaddrInet4 implements the Sockaddr interface for AF_INET type sockets. |
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changeset
|
208 |
type SockaddrInet4 struct { |
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|
209 |
Port int |
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|
210 |
Addr [4]byte |
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changeset
|
211 |
raw RawSockaddrInet4 |
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changeset
|
212 |
} |
2a9ec03fe5a1
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changeset
|
213 |
|
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Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
214 |
// SockaddrInet6 implements the Sockaddr interface for AF_INET6 type sockets. |
2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
215 |
type SockaddrInet6 struct { |
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diff
changeset
|
216 |
Port int |
2a9ec03fe5a1
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parents:
diff
changeset
|
217 |
ZoneId uint32 |
2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
218 |
Addr [16]byte |
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changeset
|
219 |
raw RawSockaddrInet6 |
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changeset
|
220 |
} |
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diff
changeset
|
221 |
|
2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
222 |
// SockaddrUnix implements the Sockaddr interface for AF_UNIX type sockets. |
2a9ec03fe5a1
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parents:
diff
changeset
|
223 |
type SockaddrUnix struct { |
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|
224 |
Name string |
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Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
225 |
raw RawSockaddrUnix |
2a9ec03fe5a1
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parents:
diff
changeset
|
226 |
} |
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changeset
|
227 |
|
2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
228 |
func Bind(fd int, sa Sockaddr) (err error) { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
229 |
ptr, n, err := sa.sockaddr() |
2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
230 |
if err != nil { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
231 |
return err |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
232 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
233 |
return bind(fd, ptr, n) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
234 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
235 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
236 |
func Connect(fd int, sa Sockaddr) (err error) { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
237 |
ptr, n, err := sa.sockaddr() |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
238 |
if err != nil { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
239 |
return err |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
240 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
241 |
return connect(fd, ptr, n) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
242 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
243 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
244 |
func Getpeername(fd int) (sa Sockaddr, err error) { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
245 |
var rsa RawSockaddrAny |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
246 |
var len _Socklen = SizeofSockaddrAny |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
247 |
if err = getpeername(fd, &rsa, &len); err != nil { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
248 |
return |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
249 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
250 |
return anyToSockaddr(fd, &rsa) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
251 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
252 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
253 |
func GetsockoptByte(fd, level, opt int) (value byte, err error) { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
254 |
var n byte |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
255 |
vallen := _Socklen(1) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
256 |
err = getsockopt(fd, level, opt, unsafe.Pointer(&n), &vallen) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
257 |
return n, err |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
258 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
259 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
260 |
func GetsockoptInt(fd, level, opt int) (value int, err error) { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
261 |
var n int32 |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
262 |
vallen := _Socklen(4) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
263 |
err = getsockopt(fd, level, opt, unsafe.Pointer(&n), &vallen) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
264 |
return int(n), err |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
265 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
266 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
267 |
func GetsockoptInet4Addr(fd, level, opt int) (value [4]byte, err error) { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
268 |
vallen := _Socklen(4) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
269 |
err = getsockopt(fd, level, opt, unsafe.Pointer(&value[0]), &vallen) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
270 |
return value, err |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
271 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
272 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
273 |
func GetsockoptIPMreq(fd, level, opt int) (*IPMreq, error) { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
274 |
var value IPMreq |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
275 |
vallen := _Socklen(SizeofIPMreq) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
276 |
err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
277 |
return &value, err |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
278 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
279 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
280 |
func GetsockoptIPv6Mreq(fd, level, opt int) (*IPv6Mreq, error) { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
281 |
var value IPv6Mreq |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
282 |
vallen := _Socklen(SizeofIPv6Mreq) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
283 |
err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
284 |
return &value, err |
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parents:
diff
changeset
|
285 |
} |
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parents:
diff
changeset
|
286 |
|
2a9ec03fe5a1
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diff
changeset
|
287 |
func GetsockoptIPv6MTUInfo(fd, level, opt int) (*IPv6MTUInfo, error) { |
2a9ec03fe5a1
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parents:
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changeset
|
288 |
var value IPv6MTUInfo |
2a9ec03fe5a1
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parents:
diff
changeset
|
289 |
vallen := _Socklen(SizeofIPv6MTUInfo) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
290 |
err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen) |
2a9ec03fe5a1
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parents:
diff
changeset
|
291 |
return &value, err |
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parents:
diff
changeset
|
292 |
} |
2a9ec03fe5a1
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diff
changeset
|
293 |
|
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diff
changeset
|
294 |
func GetsockoptICMPv6Filter(fd, level, opt int) (*ICMPv6Filter, error) { |
2a9ec03fe5a1
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parents:
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changeset
|
295 |
var value ICMPv6Filter |
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parents:
diff
changeset
|
296 |
vallen := _Socklen(SizeofICMPv6Filter) |
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parents:
diff
changeset
|
297 |
err := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen) |
2a9ec03fe5a1
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parents:
diff
changeset
|
298 |
return &value, err |
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diff
changeset
|
299 |
} |
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parents:
diff
changeset
|
300 |
|
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parents:
diff
changeset
|
301 |
func GetsockoptLinger(fd, level, opt int) (*Linger, error) { |
2a9ec03fe5a1
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parents:
diff
changeset
|
302 |
var linger Linger |
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parents:
diff
changeset
|
303 |
vallen := _Socklen(SizeofLinger) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
304 |
err := getsockopt(fd, level, opt, unsafe.Pointer(&linger), &vallen) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
305 |
return &linger, err |
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parents:
diff
changeset
|
306 |
} |
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parents:
diff
changeset
|
307 |
|
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Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
308 |
func GetsockoptTimeval(fd, level, opt int) (*Timeval, error) { |
2a9ec03fe5a1
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parents:
diff
changeset
|
309 |
var tv Timeval |
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parents:
diff
changeset
|
310 |
vallen := _Socklen(unsafe.Sizeof(tv)) |
2a9ec03fe5a1
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parents:
diff
changeset
|
311 |
err := getsockopt(fd, level, opt, unsafe.Pointer(&tv), &vallen) |
2a9ec03fe5a1
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parents:
diff
changeset
|
312 |
return &tv, err |
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parents:
diff
changeset
|
313 |
} |
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changeset
|
314 |
|
251 | 315 |
func GetsockoptUint64(fd, level, opt int) (value uint64, err error) { |
316 |
var n uint64 |
|
317 |
vallen := _Socklen(8) |
|
318 |
err = getsockopt(fd, level, opt, unsafe.Pointer(&n), &vallen) |
|
319 |
return n, err |
|
320 |
} |
|
321 |
||
242
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|
322 |
func Recvfrom(fd int, p []byte, flags int) (n int, from Sockaddr, err error) { |
2a9ec03fe5a1
Use vendoring for backward compatibility
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parents:
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changeset
|
323 |
var rsa RawSockaddrAny |
2a9ec03fe5a1
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parents:
diff
changeset
|
324 |
var len _Socklen = SizeofSockaddrAny |
2a9ec03fe5a1
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parents:
diff
changeset
|
325 |
if n, err = recvfrom(fd, p, flags, &rsa, &len); err != nil { |
2a9ec03fe5a1
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parents:
diff
changeset
|
326 |
return |
2a9ec03fe5a1
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parents:
diff
changeset
|
327 |
} |
2a9ec03fe5a1
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Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
328 |
if rsa.Addr.Family != AF_UNSPEC { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
329 |
from, err = anyToSockaddr(fd, &rsa) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
330 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
331 |
return |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
332 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
333 |
|
265
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
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262
diff
changeset
|
334 |
// Recvmsg receives a message from a socket using the recvmsg system call. The |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
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262
diff
changeset
|
335 |
// received non-control data will be written to p, and any "out of band" |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
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parents:
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diff
changeset
|
336 |
// control data will be written to oob. The flags are passed to recvmsg. |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
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diff
changeset
|
337 |
// |
05c40b36d3b2
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diff
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|
338 |
// The results are: |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
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262
diff
changeset
|
339 |
// - n is the number of non-control data bytes read into p |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
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262
diff
changeset
|
340 |
// - oobn is the number of control data bytes read into oob; this may be interpreted using [ParseSocketControlMessage] |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
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diff
changeset
|
341 |
// - recvflags is flags returned by recvmsg |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
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262
diff
changeset
|
342 |
// - from is the address of the sender |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
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262
diff
changeset
|
343 |
// |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
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diff
changeset
|
344 |
// If the underlying socket type is not SOCK_DGRAM, a received message |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
345 |
// containing oob data and a single '\0' of non-control data is treated as if |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
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parents:
262
diff
changeset
|
346 |
// the message contained only control data, i.e. n will be zero on return. |
260 | 347 |
func Recvmsg(fd int, p, oob []byte, flags int) (n, oobn int, recvflags int, from Sockaddr, err error) { |
348 |
var iov [1]Iovec |
|
349 |
if len(p) > 0 { |
|
350 |
iov[0].Base = &p[0] |
|
351 |
iov[0].SetLen(len(p)) |
|
352 |
} |
|
353 |
var rsa RawSockaddrAny |
|
354 |
n, oobn, recvflags, err = recvmsgRaw(fd, iov[:], oob, flags, &rsa) |
|
355 |
// source address is only specified if the socket is unconnected |
|
356 |
if rsa.Addr.Family != AF_UNSPEC { |
|
357 |
from, err = anyToSockaddr(fd, &rsa) |
|
358 |
} |
|
359 |
return |
|
360 |
} |
|
361 |
||
265
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
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diff
changeset
|
362 |
// RecvmsgBuffers receives a message from a socket using the recvmsg system |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
363 |
// call. This function is equivalent to Recvmsg, but non-control data read is |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
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diff
changeset
|
364 |
// scattered into the buffers slices. |
260 | 365 |
func RecvmsgBuffers(fd int, buffers [][]byte, oob []byte, flags int) (n, oobn int, recvflags int, from Sockaddr, err error) { |
366 |
iov := make([]Iovec, len(buffers)) |
|
367 |
for i := range buffers { |
|
368 |
if len(buffers[i]) > 0 { |
|
369 |
iov[i].Base = &buffers[i][0] |
|
370 |
iov[i].SetLen(len(buffers[i])) |
|
371 |
} else { |
|
372 |
iov[i].Base = (*byte)(unsafe.Pointer(&_zero)) |
|
373 |
} |
|
374 |
} |
|
375 |
var rsa RawSockaddrAny |
|
376 |
n, oobn, recvflags, err = recvmsgRaw(fd, iov, oob, flags, &rsa) |
|
377 |
if err == nil && rsa.Addr.Family != AF_UNSPEC { |
|
378 |
from, err = anyToSockaddr(fd, &rsa) |
|
379 |
} |
|
380 |
return |
|
381 |
} |
|
382 |
||
265
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
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parents:
262
diff
changeset
|
383 |
// Sendmsg sends a message on a socket to an address using the sendmsg system |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
384 |
// call. This function is equivalent to SendmsgN, but does not return the |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
385 |
// number of bytes actually sent. |
260 | 386 |
func Sendmsg(fd int, p, oob []byte, to Sockaddr, flags int) (err error) { |
387 |
_, err = SendmsgN(fd, p, oob, to, flags) |
|
388 |
return |
|
389 |
} |
|
390 |
||
265
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
391 |
// SendmsgN sends a message on a socket to an address using the sendmsg system |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
392 |
// call. p contains the non-control data to send, and oob contains the "out of |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
393 |
// band" control data. The flags are passed to sendmsg. The number of |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
394 |
// non-control bytes actually written to the socket is returned. |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
395 |
// |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
396 |
// Some socket types do not support sending control data without accompanying |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
397 |
// non-control data. If p is empty, and oob contains control data, and the |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
398 |
// underlying socket type is not SOCK_DGRAM, p will be treated as containing a |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
399 |
// single '\0' and the return value will indicate zero bytes sent. |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
400 |
// |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
401 |
// The Go function Recvmsg, if called with an empty p and a non-empty oob, |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
402 |
// will read and ignore this additional '\0'. If the message is received by |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
403 |
// code that does not use Recvmsg, or that does not use Go at all, that code |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
404 |
// will need to be written to expect and ignore the additional '\0'. |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
405 |
// |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
406 |
// If you need to send non-empty oob with p actually empty, and if the |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
407 |
// underlying socket type supports it, you can do so via a raw system call as |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
408 |
// follows: |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
409 |
// |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
410 |
// msg := &unix.Msghdr{ |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
411 |
// Control: &oob[0], |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
412 |
// } |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
413 |
// msg.SetControllen(len(oob)) |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
414 |
// n, _, errno := unix.Syscall(unix.SYS_SENDMSG, uintptr(fd), uintptr(unsafe.Pointer(msg)), flags) |
260 | 415 |
func SendmsgN(fd int, p, oob []byte, to Sockaddr, flags int) (n int, err error) { |
416 |
var iov [1]Iovec |
|
417 |
if len(p) > 0 { |
|
418 |
iov[0].Base = &p[0] |
|
419 |
iov[0].SetLen(len(p)) |
|
420 |
} |
|
421 |
var ptr unsafe.Pointer |
|
422 |
var salen _Socklen |
|
423 |
if to != nil { |
|
424 |
ptr, salen, err = to.sockaddr() |
|
425 |
if err != nil { |
|
426 |
return 0, err |
|
427 |
} |
|
428 |
} |
|
429 |
return sendmsgN(fd, iov[:], oob, ptr, salen, flags) |
|
430 |
} |
|
431 |
||
432 |
// SendmsgBuffers sends a message on a socket to an address using the sendmsg |
|
265
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
433 |
// system call. This function is equivalent to SendmsgN, but the non-control |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
434 |
// data is gathered from buffers. |
260 | 435 |
func SendmsgBuffers(fd int, buffers [][]byte, oob []byte, to Sockaddr, flags int) (n int, err error) { |
436 |
iov := make([]Iovec, len(buffers)) |
|
437 |
for i := range buffers { |
|
438 |
if len(buffers[i]) > 0 { |
|
439 |
iov[i].Base = &buffers[i][0] |
|
440 |
iov[i].SetLen(len(buffers[i])) |
|
441 |
} else { |
|
442 |
iov[i].Base = (*byte)(unsafe.Pointer(&_zero)) |
|
443 |
} |
|
444 |
} |
|
445 |
var ptr unsafe.Pointer |
|
446 |
var salen _Socklen |
|
447 |
if to != nil { |
|
448 |
ptr, salen, err = to.sockaddr() |
|
449 |
if err != nil { |
|
450 |
return 0, err |
|
451 |
} |
|
452 |
} |
|
453 |
return sendmsgN(fd, iov, oob, ptr, salen, flags) |
|
454 |
} |
|
455 |
||
456 |
func Send(s int, buf []byte, flags int) (err error) { |
|
457 |
return sendto(s, buf, flags, nil, 0) |
|
458 |
} |
|
459 |
||
242
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
460 |
func Sendto(fd int, p []byte, flags int, to Sockaddr) (err error) { |
265
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
461 |
var ptr unsafe.Pointer |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
462 |
var salen _Socklen |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
463 |
if to != nil { |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
464 |
ptr, salen, err = to.sockaddr() |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
465 |
if err != nil { |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
466 |
return err |
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
467 |
} |
242
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
468 |
} |
265
05c40b36d3b2
Bump to version 3.0.0-dev, using madon v3
Mikael Berthe <mikael@lilotux.net>
parents:
262
diff
changeset
|
469 |
return sendto(fd, p, flags, ptr, salen) |
242
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
470 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
471 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
472 |
func SetsockoptByte(fd, level, opt int, value byte) (err error) { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
473 |
return setsockopt(fd, level, opt, unsafe.Pointer(&value), 1) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
474 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
475 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
476 |
func SetsockoptInt(fd, level, opt int, value int) (err error) { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
477 |
var n = int32(value) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
478 |
return setsockopt(fd, level, opt, unsafe.Pointer(&n), 4) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
479 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
480 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
481 |
func SetsockoptInet4Addr(fd, level, opt int, value [4]byte) (err error) { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
482 |
return setsockopt(fd, level, opt, unsafe.Pointer(&value[0]), 4) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
483 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
484 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
485 |
func SetsockoptIPMreq(fd, level, opt int, mreq *IPMreq) (err error) { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
486 |
return setsockopt(fd, level, opt, unsafe.Pointer(mreq), SizeofIPMreq) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
487 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
488 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
489 |
func SetsockoptIPv6Mreq(fd, level, opt int, mreq *IPv6Mreq) (err error) { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
490 |
return setsockopt(fd, level, opt, unsafe.Pointer(mreq), SizeofIPv6Mreq) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
491 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
492 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
493 |
func SetsockoptICMPv6Filter(fd, level, opt int, filter *ICMPv6Filter) error { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
494 |
return setsockopt(fd, level, opt, unsafe.Pointer(filter), SizeofICMPv6Filter) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
495 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
496 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
497 |
func SetsockoptLinger(fd, level, opt int, l *Linger) (err error) { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
498 |
return setsockopt(fd, level, opt, unsafe.Pointer(l), SizeofLinger) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
499 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
500 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
501 |
func SetsockoptString(fd, level, opt int, s string) (err error) { |
251 | 502 |
var p unsafe.Pointer |
503 |
if len(s) > 0 { |
|
504 |
p = unsafe.Pointer(&[]byte(s)[0]) |
|
505 |
} |
|
506 |
return setsockopt(fd, level, opt, p, uintptr(len(s))) |
|
242
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
507 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
508 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
509 |
func SetsockoptTimeval(fd, level, opt int, tv *Timeval) (err error) { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
510 |
return setsockopt(fd, level, opt, unsafe.Pointer(tv), unsafe.Sizeof(*tv)) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
511 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
512 |
|
251 | 513 |
func SetsockoptUint64(fd, level, opt int, value uint64) (err error) { |
514 |
return setsockopt(fd, level, opt, unsafe.Pointer(&value), 8) |
|
515 |
} |
|
516 |
||
242
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
517 |
func Socket(domain, typ, proto int) (fd int, err error) { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
518 |
if domain == AF_INET6 && SocketDisableIPv6 { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
519 |
return -1, EAFNOSUPPORT |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
520 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
521 |
fd, err = socket(domain, typ, proto) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
522 |
return |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
523 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
524 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
525 |
func Socketpair(domain, typ, proto int) (fd [2]int, err error) { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
526 |
var fdx [2]int32 |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
527 |
err = socketpair(domain, typ, proto, &fdx) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
528 |
if err == nil { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
529 |
fd[0] = int(fdx[0]) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
530 |
fd[1] = int(fdx[1]) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
531 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
532 |
return |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
533 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
534 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
535 |
var ioSync int64 |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
536 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
537 |
func CloseOnExec(fd int) { fcntl(fd, F_SETFD, FD_CLOEXEC) } |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
538 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
539 |
func SetNonblock(fd int, nonblocking bool) (err error) { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
540 |
flag, err := fcntl(fd, F_GETFL, 0) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
541 |
if err != nil { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
542 |
return err |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
543 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
544 |
if nonblocking { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
545 |
flag |= O_NONBLOCK |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
546 |
} else { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
547 |
flag &= ^O_NONBLOCK |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
548 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
549 |
_, err = fcntl(fd, F_SETFL, flag) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
550 |
return err |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
551 |
} |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
552 |
|
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
553 |
// Exec calls execve(2), which replaces the calling executable in the process |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
554 |
// tree. argv0 should be the full path to an executable ("/bin/ls") and the |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
555 |
// executable name should also be the first argument in argv (["ls", "-l"]). |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
556 |
// envv are the environment variables that should be passed to the new |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
557 |
// process (["USER=go", "PWD=/tmp"]). |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
558 |
func Exec(argv0 string, argv []string, envv []string) error { |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
559 |
return syscall.Exec(argv0, argv, envv) |
2a9ec03fe5a1
Use vendoring for backward compatibility
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
560 |
} |
251 | 561 |
|
562 |
// Lutimes sets the access and modification times tv on path. If path refers to |
|
563 |
// a symlink, it is not dereferenced and the timestamps are set on the symlink. |
|
564 |
// If tv is nil, the access and modification times are set to the current time. |
|
565 |
// Otherwise tv must contain exactly 2 elements, with access time as the first |
|
566 |
// element and modification time as the second element. |
|
567 |
func Lutimes(path string, tv []Timeval) error { |
|
568 |
if tv == nil { |
|
569 |
return UtimesNanoAt(AT_FDCWD, path, nil, AT_SYMLINK_NOFOLLOW) |
|
570 |
} |
|
571 |
if len(tv) != 2 { |
|
572 |
return EINVAL |
|
573 |
} |
|
574 |
ts := []Timespec{ |
|
575 |
NsecToTimespec(TimevalToNsec(tv[0])), |
|
576 |
NsecToTimespec(TimevalToNsec(tv[1])), |
|
577 |
} |
|
578 |
return UtimesNanoAt(AT_FDCWD, path, ts, AT_SYMLINK_NOFOLLOW) |
|
579 |
} |
|
260 | 580 |
|
581 |
// emptyIovec reports whether there are no bytes in the slice of Iovec. |
|
582 |
func emptyIovecs(iov []Iovec) bool { |
|
583 |
for i := range iov { |
|
584 |
if iov[i].Len > 0 { |
|
585 |
return false |
|
586 |
} |
|
587 |
} |
|
588 |
return true |
|
589 |
} |