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1 // Copyright 2021 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 |
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5 // illumos system calls not present on Solaris. |
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6 |
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7 //go:build amd64 && illumos |
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8 // +build amd64,illumos |
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9 |
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10 package unix |
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11 |
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12 import ( |
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13 "fmt" |
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14 "runtime" |
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15 "unsafe" |
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16 ) |
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17 |
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18 func bytes2iovec(bs [][]byte) []Iovec { |
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19 iovecs := make([]Iovec, len(bs)) |
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20 for i, b := range bs { |
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21 iovecs[i].SetLen(len(b)) |
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22 if len(b) > 0 { |
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23 // somehow Iovec.Base on illumos is (*int8), not (*byte) |
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24 iovecs[i].Base = (*int8)(unsafe.Pointer(&b[0])) |
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25 } else { |
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26 iovecs[i].Base = (*int8)(unsafe.Pointer(&_zero)) |
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27 } |
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28 } |
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29 return iovecs |
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30 } |
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31 |
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32 //sys readv(fd int, iovs []Iovec) (n int, err error) |
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33 |
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34 func Readv(fd int, iovs [][]byte) (n int, err error) { |
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35 iovecs := bytes2iovec(iovs) |
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36 n, err = readv(fd, iovecs) |
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37 return n, err |
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38 } |
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39 |
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40 //sys preadv(fd int, iovs []Iovec, off int64) (n int, err error) |
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41 |
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42 func Preadv(fd int, iovs [][]byte, off int64) (n int, err error) { |
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43 iovecs := bytes2iovec(iovs) |
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44 n, err = preadv(fd, iovecs, off) |
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45 return n, err |
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46 } |
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47 |
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48 //sys writev(fd int, iovs []Iovec) (n int, err error) |
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49 |
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50 func Writev(fd int, iovs [][]byte) (n int, err error) { |
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51 iovecs := bytes2iovec(iovs) |
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52 n, err = writev(fd, iovecs) |
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53 return n, err |
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54 } |
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55 |
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56 //sys pwritev(fd int, iovs []Iovec, off int64) (n int, err error) |
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57 |
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58 func Pwritev(fd int, iovs [][]byte, off int64) (n int, err error) { |
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59 iovecs := bytes2iovec(iovs) |
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60 n, err = pwritev(fd, iovecs, off) |
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61 return n, err |
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62 } |
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63 |
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64 //sys accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error) = libsocket.accept4 |
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65 |
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66 func Accept4(fd int, flags int) (nfd int, sa Sockaddr, err error) { |
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67 var rsa RawSockaddrAny |
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68 var len _Socklen = SizeofSockaddrAny |
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69 nfd, err = accept4(fd, &rsa, &len, flags) |
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70 if err != nil { |
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71 return |
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72 } |
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73 if len > SizeofSockaddrAny { |
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74 panic("RawSockaddrAny too small") |
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75 } |
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76 sa, err = anyToSockaddr(fd, &rsa) |
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77 if err != nil { |
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78 Close(nfd) |
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79 nfd = 0 |
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80 } |
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81 return |
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82 } |
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83 |
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84 //sys putmsg(fd int, clptr *strbuf, dataptr *strbuf, flags int) (err error) |
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85 |
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86 func Putmsg(fd int, cl []byte, data []byte, flags int) (err error) { |
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87 var clp, datap *strbuf |
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88 if len(cl) > 0 { |
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89 clp = &strbuf{ |
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90 Len: int32(len(cl)), |
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91 Buf: (*int8)(unsafe.Pointer(&cl[0])), |
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92 } |
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93 } |
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94 if len(data) > 0 { |
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95 datap = &strbuf{ |
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96 Len: int32(len(data)), |
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97 Buf: (*int8)(unsafe.Pointer(&data[0])), |
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98 } |
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99 } |
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100 return putmsg(fd, clp, datap, flags) |
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101 } |
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102 |
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103 //sys getmsg(fd int, clptr *strbuf, dataptr *strbuf, flags *int) (err error) |
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104 |
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105 func Getmsg(fd int, cl []byte, data []byte) (retCl []byte, retData []byte, flags int, err error) { |
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106 var clp, datap *strbuf |
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107 if len(cl) > 0 { |
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108 clp = &strbuf{ |
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109 Maxlen: int32(len(cl)), |
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110 Buf: (*int8)(unsafe.Pointer(&cl[0])), |
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111 } |
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112 } |
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113 if len(data) > 0 { |
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114 datap = &strbuf{ |
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115 Maxlen: int32(len(data)), |
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116 Buf: (*int8)(unsafe.Pointer(&data[0])), |
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117 } |
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118 } |
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119 |
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120 if err = getmsg(fd, clp, datap, &flags); err != nil { |
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121 return nil, nil, 0, err |
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122 } |
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123 |
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124 if len(cl) > 0 { |
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125 retCl = cl[:clp.Len] |
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126 } |
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127 if len(data) > 0 { |
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128 retData = data[:datap.Len] |
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129 } |
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130 return retCl, retData, flags, nil |
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131 } |
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132 |
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133 func IoctlSetIntRetInt(fd int, req uint, arg int) (int, error) { |
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134 return ioctlRet(fd, req, uintptr(arg)) |
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135 } |
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136 |
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137 func IoctlSetString(fd int, req uint, val string) error { |
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138 bs := make([]byte, len(val)+1) |
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139 copy(bs[:len(bs)-1], val) |
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140 err := ioctl(fd, req, uintptr(unsafe.Pointer(&bs[0]))) |
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141 runtime.KeepAlive(&bs[0]) |
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142 return err |
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143 } |
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144 |
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145 // Lifreq Helpers |
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146 |
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147 func (l *Lifreq) SetName(name string) error { |
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148 if len(name) >= len(l.Name) { |
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149 return fmt.Errorf("name cannot be more than %d characters", len(l.Name)-1) |
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150 } |
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151 for i := range name { |
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152 l.Name[i] = int8(name[i]) |
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153 } |
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154 return nil |
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155 } |
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156 |
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157 func (l *Lifreq) SetLifruInt(d int) { |
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158 *(*int)(unsafe.Pointer(&l.Lifru[0])) = d |
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159 } |
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160 |
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161 func (l *Lifreq) GetLifruInt() int { |
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162 return *(*int)(unsafe.Pointer(&l.Lifru[0])) |
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163 } |
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164 |
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165 func IoctlLifreq(fd int, req uint, l *Lifreq) error { |
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166 return ioctl(fd, req, uintptr(unsafe.Pointer(l))) |
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167 } |
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168 |
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169 // Strioctl Helpers |
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170 |
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171 func (s *Strioctl) SetInt(i int) { |
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172 s.Len = int32(unsafe.Sizeof(i)) |
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173 s.Dp = (*int8)(unsafe.Pointer(&i)) |
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174 } |
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175 |
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176 func IoctlSetStrioctlRetInt(fd int, req uint, s *Strioctl) (int, error) { |
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177 return ioctlRet(fd, req, uintptr(unsafe.Pointer(s))) |
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178 } |