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1 // Copyright 2009,2010 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 // OpenBSD system calls.
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6 // This file is compiled as ordinary Go code,
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7 // but it is also input to mksyscall,
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8 // which parses the //sys lines and generates system call stubs.
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9 // Note that sometimes we use a lowercase //sys name and wrap
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10 // it in our own nicer implementation, either here or in
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11 // syscall_bsd.go or syscall_unix.go.
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12
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13 package unix
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14
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15 import (
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16 "sort"
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17 "syscall"
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18 "unsafe"
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19 )
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20
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21 // SockaddrDatalink implements the Sockaddr interface for AF_LINK type sockets.
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22 type SockaddrDatalink struct {
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23 Len uint8
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24 Family uint8
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25 Index uint16
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26 Type uint8
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27 Nlen uint8
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28 Alen uint8
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29 Slen uint8
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30 Data [24]int8
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31 raw RawSockaddrDatalink
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32 }
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33
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34 func anyToSockaddrGOOS(fd int, rsa *RawSockaddrAny) (Sockaddr, error) {
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35 return nil, EAFNOSUPPORT
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36 }
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37
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38 func Syscall9(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err syscall.Errno)
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39
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40 func nametomib(name string) (mib []_C_int, err error) {
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41 i := sort.Search(len(sysctlMib), func(i int) bool {
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42 return sysctlMib[i].ctlname >= name
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43 })
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44 if i < len(sysctlMib) && sysctlMib[i].ctlname == name {
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45 return sysctlMib[i].ctloid, nil
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46 }
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47 return nil, EINVAL
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48 }
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49
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50 func direntIno(buf []byte) (uint64, bool) {
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51 return readInt(buf, unsafe.Offsetof(Dirent{}.Fileno), unsafe.Sizeof(Dirent{}.Fileno))
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52 }
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53
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54 func direntReclen(buf []byte) (uint64, bool) {
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55 return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen))
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56 }
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57
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58 func direntNamlen(buf []byte) (uint64, bool) {
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59 return readInt(buf, unsafe.Offsetof(Dirent{}.Namlen), unsafe.Sizeof(Dirent{}.Namlen))
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60 }
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61
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62 func SysctlUvmexp(name string) (*Uvmexp, error) {
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63 mib, err := sysctlmib(name)
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64 if err != nil {
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65 return nil, err
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66 }
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67
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68 n := uintptr(SizeofUvmexp)
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69 var u Uvmexp
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70 if err := sysctl(mib, (*byte)(unsafe.Pointer(&u)), &n, nil, 0); err != nil {
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71 return nil, err
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72 }
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73 if n != SizeofUvmexp {
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74 return nil, EIO
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75 }
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76 return &u, nil
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77 }
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78
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79 func Pipe(p []int) (err error) {
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80 return Pipe2(p, 0)
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81 }
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82
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83 //sysnb pipe2(p *[2]_C_int, flags int) (err error)
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84
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85 func Pipe2(p []int, flags int) error {
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86 if len(p) != 2 {
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87 return EINVAL
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88 }
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89 var pp [2]_C_int
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90 err := pipe2(&pp, flags)
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91 if err == nil {
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92 p[0] = int(pp[0])
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93 p[1] = int(pp[1])
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94 }
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95 return err
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96 }
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97
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98 //sys Getdents(fd int, buf []byte) (n int, err error)
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99
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100 func Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) {
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101 n, err = Getdents(fd, buf)
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102 if err != nil || basep == nil {
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103 return
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104 }
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105
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106 var off int64
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107 off, err = Seek(fd, 0, 1 /* SEEK_CUR */)
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108 if err != nil {
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109 *basep = ^uintptr(0)
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110 return
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111 }
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112 *basep = uintptr(off)
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113 if unsafe.Sizeof(*basep) == 8 {
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114 return
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115 }
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116 if off>>32 != 0 {
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117 // We can't stuff the offset back into a uintptr, so any
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118 // future calls would be suspect. Generate an error.
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119 // EIO was allowed by getdirentries.
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120 err = EIO
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121 }
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122 return
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123 }
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124
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125 //sys Getcwd(buf []byte) (n int, err error) = SYS___GETCWD
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126
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127 func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
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128 if raceenabled {
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129 raceReleaseMerge(unsafe.Pointer(&ioSync))
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130 }
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131 return sendfile(outfd, infd, offset, count)
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132 }
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133
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134 // TODO
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135 func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
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136 return -1, ENOSYS
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137 }
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138
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139 func Getfsstat(buf []Statfs_t, flags int) (n int, err error) {
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140 var _p0 unsafe.Pointer
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141 var bufsize uintptr
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142 if len(buf) > 0 {
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143 _p0 = unsafe.Pointer(&buf[0])
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144 bufsize = unsafe.Sizeof(Statfs_t{}) * uintptr(len(buf))
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145 }
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146 r0, _, e1 := Syscall(SYS_GETFSSTAT, uintptr(_p0), bufsize, uintptr(flags))
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147 n = int(r0)
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148 if e1 != 0 {
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149 err = e1
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150 }
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151 return
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152 }
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153
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154 //sys ioctl(fd int, req uint, arg uintptr) (err error)
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155
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156 //sys sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) = SYS___SYSCTL
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157
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158 //sys ppoll(fds *PollFd, nfds int, timeout *Timespec, sigmask *Sigset_t) (n int, err error)
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159
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160 func Ppoll(fds []PollFd, timeout *Timespec, sigmask *Sigset_t) (n int, err error) {
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161 if len(fds) == 0 {
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162 return ppoll(nil, 0, timeout, sigmask)
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163 }
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164 return ppoll(&fds[0], len(fds), timeout, sigmask)
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165 }
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166
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167 func Uname(uname *Utsname) error {
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168 mib := []_C_int{CTL_KERN, KERN_OSTYPE}
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169 n := unsafe.Sizeof(uname.Sysname)
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170 if err := sysctl(mib, &uname.Sysname[0], &n, nil, 0); err != nil {
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171 return err
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172 }
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173
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174 mib = []_C_int{CTL_KERN, KERN_HOSTNAME}
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175 n = unsafe.Sizeof(uname.Nodename)
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176 if err := sysctl(mib, &uname.Nodename[0], &n, nil, 0); err != nil {
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177 return err
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178 }
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179
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180 mib = []_C_int{CTL_KERN, KERN_OSRELEASE}
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181 n = unsafe.Sizeof(uname.Release)
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182 if err := sysctl(mib, &uname.Release[0], &n, nil, 0); err != nil {
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183 return err
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184 }
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185
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186 mib = []_C_int{CTL_KERN, KERN_VERSION}
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187 n = unsafe.Sizeof(uname.Version)
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188 if err := sysctl(mib, &uname.Version[0], &n, nil, 0); err != nil {
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189 return err
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190 }
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191
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192 // The version might have newlines or tabs in it, convert them to
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193 // spaces.
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194 for i, b := range uname.Version {
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195 if b == '\n' || b == '\t' {
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196 if i == len(uname.Version)-1 {
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197 uname.Version[i] = 0
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198 } else {
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199 uname.Version[i] = ' '
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200 }
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201 }
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202 }
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203
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204 mib = []_C_int{CTL_HW, HW_MACHINE}
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205 n = unsafe.Sizeof(uname.Machine)
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206 if err := sysctl(mib, &uname.Machine[0], &n, nil, 0); err != nil {
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207 return err
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208 }
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209
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210 return nil
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211 }
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212
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213 /*
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214 * Exposed directly
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215 */
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216 //sys Access(path string, mode uint32) (err error)
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217 //sys Adjtime(delta *Timeval, olddelta *Timeval) (err error)
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218 //sys Chdir(path string) (err error)
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219 //sys Chflags(path string, flags int) (err error)
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220 //sys Chmod(path string, mode uint32) (err error)
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221 //sys Chown(path string, uid int, gid int) (err error)
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222 //sys Chroot(path string) (err error)
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223 //sys Close(fd int) (err error)
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224 //sys Dup(fd int) (nfd int, err error)
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225 //sys Dup2(from int, to int) (err error)
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226 //sys Dup3(from int, to int, flags int) (err error)
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227 //sys Exit(code int)
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228 //sys Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
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229 //sys Fchdir(fd int) (err error)
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230 //sys Fchflags(fd int, flags int) (err error)
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231 //sys Fchmod(fd int, mode uint32) (err error)
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232 //sys Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
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233 //sys Fchown(fd int, uid int, gid int) (err error)
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234 //sys Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)
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235 //sys Flock(fd int, how int) (err error)
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236 //sys Fpathconf(fd int, name int) (val int, err error)
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237 //sys Fstat(fd int, stat *Stat_t) (err error)
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238 //sys Fstatat(fd int, path string, stat *Stat_t, flags int) (err error)
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239 //sys Fstatfs(fd int, stat *Statfs_t) (err error)
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240 //sys Fsync(fd int) (err error)
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241 //sys Ftruncate(fd int, length int64) (err error)
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242 //sysnb Getegid() (egid int)
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243 //sysnb Geteuid() (uid int)
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244 //sysnb Getgid() (gid int)
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245 //sysnb Getpgid(pid int) (pgid int, err error)
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246 //sysnb Getpgrp() (pgrp int)
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247 //sysnb Getpid() (pid int)
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248 //sysnb Getppid() (ppid int)
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249 //sys Getpriority(which int, who int) (prio int, err error)
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250 //sysnb Getrlimit(which int, lim *Rlimit) (err error)
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251 //sysnb Getrtable() (rtable int, err error)
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252 //sysnb Getrusage(who int, rusage *Rusage) (err error)
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253 //sysnb Getsid(pid int) (sid int, err error)
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254 //sysnb Gettimeofday(tv *Timeval) (err error)
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255 //sysnb Getuid() (uid int)
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256 //sys Issetugid() (tainted bool)
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257 //sys Kill(pid int, signum syscall.Signal) (err error)
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258 //sys Kqueue() (fd int, err error)
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259 //sys Lchown(path string, uid int, gid int) (err error)
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260 //sys Link(path string, link string) (err error)
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261 //sys Linkat(pathfd int, path string, linkfd int, link string, flags int) (err error)
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262 //sys Listen(s int, backlog int) (err error)
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263 //sys Lstat(path string, stat *Stat_t) (err error)
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264 //sys Mkdir(path string, mode uint32) (err error)
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265 //sys Mkdirat(dirfd int, path string, mode uint32) (err error)
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266 //sys Mkfifo(path string, mode uint32) (err error)
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267 //sys Mkfifoat(dirfd int, path string, mode uint32) (err error)
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268 //sys Mknod(path string, mode uint32, dev int) (err error)
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269 //sys Mknodat(dirfd int, path string, mode uint32, dev int) (err error)
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270 //sys Nanosleep(time *Timespec, leftover *Timespec) (err error)
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271 //sys Open(path string, mode int, perm uint32) (fd int, err error)
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272 //sys Openat(dirfd int, path string, mode int, perm uint32) (fd int, err error)
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273 //sys Pathconf(path string, name int) (val int, err error)
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274 //sys pread(fd int, p []byte, offset int64) (n int, err error)
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275 //sys pwrite(fd int, p []byte, offset int64) (n int, err error)
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276 //sys read(fd int, p []byte) (n int, err error)
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277 //sys Readlink(path string, buf []byte) (n int, err error)
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278 //sys Readlinkat(dirfd int, path string, buf []byte) (n int, err error)
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279 //sys Rename(from string, to string) (err error)
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280 //sys Renameat(fromfd int, from string, tofd int, to string) (err error)
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281 //sys Revoke(path string) (err error)
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282 //sys Rmdir(path string) (err error)
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283 //sys Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK
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284 //sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error)
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285 //sysnb Setegid(egid int) (err error)
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286 //sysnb Seteuid(euid int) (err error)
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287 //sysnb Setgid(gid int) (err error)
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288 //sys Setlogin(name string) (err error)
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289 //sysnb Setpgid(pid int, pgid int) (err error)
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290 //sys Setpriority(which int, who int, prio int) (err error)
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291 //sysnb Setregid(rgid int, egid int) (err error)
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292 //sysnb Setreuid(ruid int, euid int) (err error)
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293 //sysnb Setresgid(rgid int, egid int, sgid int) (err error)
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294 //sysnb Setresuid(ruid int, euid int, suid int) (err error)
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295 //sysnb Setrlimit(which int, lim *Rlimit) (err error)
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296 //sysnb Setrtable(rtable int) (err error)
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297 //sysnb Setsid() (pid int, err error)
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298 //sysnb Settimeofday(tp *Timeval) (err error)
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299 //sysnb Setuid(uid int) (err error)
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300 //sys Stat(path string, stat *Stat_t) (err error)
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301 //sys Statfs(path string, stat *Statfs_t) (err error)
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302 //sys Symlink(path string, link string) (err error)
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303 //sys Symlinkat(oldpath string, newdirfd int, newpath string) (err error)
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304 //sys Sync() (err error)
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305 //sys Truncate(path string, length int64) (err error)
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306 //sys Umask(newmask int) (oldmask int)
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307 //sys Unlink(path string) (err error)
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308 //sys Unlinkat(dirfd int, path string, flags int) (err error)
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309 //sys Unmount(path string, flags int) (err error)
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310 //sys write(fd int, p []byte) (n int, err error)
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311 //sys mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error)
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312 //sys munmap(addr uintptr, length uintptr) (err error)
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313 //sys readlen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_READ
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314 //sys writelen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_WRITE
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315 //sys utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error)
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316
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317 /*
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318 * Unimplemented
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319 */
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320 // __getcwd
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321 // __semctl
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322 // __syscall
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323 // __sysctl
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324 // adjfreq
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325 // break
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326 // clock_getres
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327 // clock_gettime
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328 // clock_settime
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329 // closefrom
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330 // execve
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331 // fhopen
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332 // fhstat
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333 // fhstatfs
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334 // fork
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335 // futimens
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336 // getfh
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337 // getgid
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338 // getitimer
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339 // getlogin
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340 // getresgid
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341 // getresuid
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342 // getthrid
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343 // ktrace
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344 // lfs_bmapv
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345 // lfs_markv
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346 // lfs_segclean
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347 // lfs_segwait
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348 // mincore
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349 // minherit
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350 // mount
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351 // mquery
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352 // msgctl
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353 // msgget
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354 // msgrcv
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355 // msgsnd
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356 // nfssvc
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357 // nnpfspioctl
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358 // preadv
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359 // profil
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360 // pwritev
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361 // quotactl
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362 // readv
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363 // reboot
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364 // renameat
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365 // rfork
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366 // sched_yield
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367 // semget
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368 // semop
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369 // setgroups
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370 // setitimer
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371 // setsockopt
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372 // shmat
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373 // shmctl
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374 // shmdt
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375 // shmget
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376 // sigaction
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377 // sigaltstack
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378 // sigpending
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379 // sigprocmask
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380 // sigreturn
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381 // sigsuspend
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382 // sysarch
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383 // syscall
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384 // threxit
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385 // thrsigdivert
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386 // thrsleep
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387 // thrwakeup
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388 // vfork
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389 // writev
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