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1 ------------------------------------------------------------------------------
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2 -- --
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3 -- GNAT COMPILER COMPONENTS --
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4 -- --
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5 -- G N A T . S O C K E T S . T H I N --
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6 -- --
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7 -- S p e c --
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8 -- --
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9 -- Copyright (C) 2001-2017, AdaCore --
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10 -- --
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11 -- GNAT is free software; you can redistribute it and/or modify it under --
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12 -- terms of the GNU General Public License as published by the Free Soft- --
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13 -- ware Foundation; either version 3, or (at your option) any later ver- --
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14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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16 -- or FITNESS FOR A PARTICULAR PURPOSE. --
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17 -- --
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18 -- As a special exception under Section 7 of GPL version 3, you are granted --
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19 -- additional permissions described in the GCC Runtime Library Exception, --
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20 -- version 3.1, as published by the Free Software Foundation. --
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21 -- --
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22 -- You should have received a copy of the GNU General Public License and --
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23 -- a copy of the GCC Runtime Library Exception along with this program; --
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24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
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25 -- <http://www.gnu.org/licenses/>. --
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26 -- --
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27 -- GNAT was originally developed by the GNAT team at New York University. --
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28 -- Extensive contributions were provided by Ada Core Technologies Inc. --
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29 -- --
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30 ------------------------------------------------------------------------------
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31
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32 -- This package provides a target dependent thin interface to the sockets
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33 -- layer for use by the GNAT.Sockets package (g-socket.ads). This package
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34 -- should not be directly with'ed by an applications program.
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35
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36 -- This version is for NT
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37
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38 with Interfaces.C;
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39
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40 with GNAT.Sockets.Thin_Common;
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41
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42 with System;
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43 with System.CRTL;
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44
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45 package GNAT.Sockets.Thin is
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46
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47 use Thin_Common;
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48
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49 package C renames Interfaces.C;
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50
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51 function Socket_Errno return Integer;
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52 -- Returns last socket error number
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53
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54 procedure Set_Socket_Errno (Errno : Integer);
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55 -- Set last socket error number
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56
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57 function Socket_Error_Message (Errno : Integer) return String;
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58 -- Returns the error message string for the error number Errno. If Errno is
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59 -- not known, returns "Unknown system error".
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60
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61 function Host_Errno return Integer;
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62 pragma Import (C, Host_Errno, "__gnat_get_h_errno");
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63 -- Returns last host error number
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64
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65 package Host_Error_Messages is
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66
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67 function Host_Error_Message (H_Errno : Integer) return String;
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68 -- Returns the error message string for the host error number H_Errno.
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69 -- If H_Errno is not known, returns "Unknown system error".
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70
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71 end Host_Error_Messages;
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72
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73 --------------------------------
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74 -- Standard library functions --
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75 --------------------------------
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76
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77 function C_Accept
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78 (S : C.int;
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79 Addr : System.Address;
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80 Addrlen : not null access C.int) return C.int;
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81
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82 function C_Bind
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83 (S : C.int;
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84 Name : System.Address;
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85 Namelen : C.int) return C.int;
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86
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87 function C_Close
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88 (Fd : C.int) return C.int;
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89
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90 function C_Connect
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91 (S : C.int;
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92 Name : System.Address;
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93 Namelen : C.int) return C.int;
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94
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95 function C_Gethostname
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96 (Name : System.Address;
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97 Namelen : C.int) return C.int;
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98
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99 function C_Getpeername
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100 (S : C.int;
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101 Name : System.Address;
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102 Namelen : not null access C.int) return C.int;
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103
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104 function C_Getsockname
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105 (S : C.int;
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106 Name : System.Address;
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107 Namelen : not null access C.int) return C.int;
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108
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109 function C_Getsockopt
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110 (S : C.int;
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111 Level : C.int;
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112 Optname : C.int;
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113 Optval : System.Address;
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114 Optlen : not null access C.int) return C.int;
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115
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116 function Socket_Ioctl
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117 (S : C.int;
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118 Req : SOSC.IOCTL_Req_T;
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119 Arg : access C.int) return C.int;
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120
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121 function C_Listen
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122 (S : C.int;
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123 Backlog : C.int) return C.int;
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124
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125 function C_Recv
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126 (S : C.int;
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127 Msg : System.Address;
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128 Len : C.int;
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129 Flags : C.int) return C.int;
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130
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131 function C_Recvfrom
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132 (S : C.int;
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133 Msg : System.Address;
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134 Len : C.int;
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135 Flags : C.int;
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136 From : System.Address;
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137 Fromlen : not null access C.int) return C.int;
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138
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139 function C_Recvmsg
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140 (S : C.int;
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141 Msg : System.Address;
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142 Flags : C.int) return System.CRTL.ssize_t;
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143
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144 function C_Select
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145 (Nfds : C.int;
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146 Readfds : access Fd_Set;
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147 Writefds : access Fd_Set;
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148 Exceptfds : access Fd_Set;
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149 Timeout : Timeval_Access) return C.int;
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150
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151 function C_Sendmsg
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152 (S : C.int;
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153 Msg : System.Address;
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154 Flags : C.int) return System.CRTL.ssize_t;
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155
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156 function C_Sendto
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157 (S : C.int;
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158 Msg : System.Address;
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159 Len : C.int;
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160 Flags : C.int;
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161 To : System.Address;
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162 Tolen : C.int) return C.int;
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163
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164 function C_Setsockopt
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165 (S : C.int;
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166 Level : C.int;
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167 Optname : C.int;
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168 Optval : System.Address;
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169 Optlen : C.int) return C.int;
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170
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171 function C_Shutdown
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172 (S : C.int;
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173 How : C.int) return C.int;
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174
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175 function C_Socket
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176 (Domain : C.int;
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177 Typ : C.int;
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178 Protocol : C.int) return C.int;
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179
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180 function C_System
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181 (Command : System.Address) return C.int;
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182
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183 function WSAStartup
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184 (WS_Version : Interfaces.C.unsigned_short;
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185 WSADataAddress : System.Address) return Interfaces.C.int;
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186
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187 -------------------------------------------------------
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188 -- Signalling file descriptors for selector abortion --
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189 -------------------------------------------------------
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190
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191 package Signalling_Fds is
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192
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193 function Create (Fds : not null access Fd_Pair) return C.int;
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194 pragma Convention (C, Create);
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195 -- Create a pair of connected descriptors suitable for use with C_Select
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196 -- (used for signalling in Selector objects).
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197
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198 function Read (Rsig : C.int) return C.int;
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199 pragma Convention (C, Read);
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200 -- Read one byte of data from rsig, the read end of a pair of signalling
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201 -- fds created by Create_Signalling_Fds.
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202
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203 function Write (Wsig : C.int) return C.int;
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204 pragma Convention (C, Write);
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205 -- Write one byte of data to wsig, the write end of a pair of signalling
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206 -- fds created by Create_Signalling_Fds.
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207
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208 procedure Close (Sig : C.int);
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209 pragma Convention (C, Close);
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210 -- Close one end of a pair of signalling fds (ignoring any error)
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211
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212 end Signalling_Fds;
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213
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214 procedure WSACleanup;
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215
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216 procedure Initialize;
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217 procedure Finalize;
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218
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219 private
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220 pragma Import (Stdcall, C_Accept, "accept");
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221 pragma Import (Stdcall, C_Bind, "bind");
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222 pragma Import (Stdcall, C_Close, "closesocket");
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223 pragma Import (Stdcall, C_Gethostname, "gethostname");
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224 pragma Import (Stdcall, C_Getpeername, "getpeername");
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225 pragma Import (Stdcall, C_Getsockname, "getsockname");
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226 pragma Import (Stdcall, C_Getsockopt, "getsockopt");
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227 pragma Import (Stdcall, C_Listen, "listen");
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228 pragma Import (Stdcall, C_Recv, "recv");
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229 pragma Import (Stdcall, C_Recvfrom, "recvfrom");
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230 pragma Import (Stdcall, C_Sendto, "sendto");
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231 pragma Import (Stdcall, C_Setsockopt, "setsockopt");
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232 pragma Import (Stdcall, C_Shutdown, "shutdown");
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233 pragma Import (Stdcall, C_Socket, "socket");
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234 pragma Import (C, C_System, "_system");
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235 pragma Import (Stdcall, Socket_Errno, "WSAGetLastError");
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236 pragma Import (Stdcall, Set_Socket_Errno, "WSASetLastError");
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237 pragma Import (Stdcall, WSAStartup, "WSAStartup");
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238 pragma Import (Stdcall, WSACleanup, "WSACleanup");
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239
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240 end GNAT.Sockets.Thin;
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