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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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131
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9 -- Copyright (C) 2002-2018, AdaCore --
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111
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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 is the version for VxWorks
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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.OS_Lib;
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41 with GNAT.Sockets.Thin_Common;
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42
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43 with System;
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44 with System.CRTL;
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45
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46 package GNAT.Sockets.Thin is
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47
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48 use Thin_Common;
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49
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50 package C renames Interfaces.C;
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51
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52 function Socket_Errno return Integer renames GNAT.OS_Lib.Errno;
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53 -- Returns last socket error number
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54
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55 procedure Set_Socket_Errno (Errno : Integer) renames GNAT.OS_Lib.Set_Errno;
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56 -- Set last socket error number
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57
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58 function Socket_Error_Message (Errno : Integer) return String;
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59 -- Returns the error message string for the error number Errno. If Errno is
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60 -- not known, returns "Unknown system error".
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61
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62 function Host_Errno return Integer;
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63 pragma Import (C, Host_Errno, "__gnat_get_h_errno");
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64 -- Returns last host error number
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65
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66 package Host_Error_Messages is
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67
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68 function Host_Error_Message (H_Errno : Integer) return String;
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69 -- Returns the error message string for the host error number H_Errno.
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70 -- If H_Errno is not known, returns "Unknown system error".
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71
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72 end Host_Error_Messages;
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73
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74 --------------------------------
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75 -- Standard library functions --
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76 --------------------------------
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77
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78 function C_Accept
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79 (S : C.int;
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80 Addr : System.Address;
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81 Addrlen : not null access C.int) return C.int;
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82
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83 function C_Bind
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84 (S : C.int;
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85 Name : System.Address;
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86 Namelen : C.int) return C.int;
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87
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88 function C_Close
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89 (Fd : C.int) return C.int;
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90
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91 function C_Connect
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92 (S : C.int;
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93 Name : System.Address;
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94 Namelen : C.int) return C.int;
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95
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96 function C_Gethostname
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97 (Name : System.Address;
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98 Namelen : C.int) return C.int;
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99
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100 function C_Getpeername
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101 (S : C.int;
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102 Name : System.Address;
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103 Namelen : not null access C.int) return C.int;
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104
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105 function C_Getsockname
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106 (S : C.int;
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107 Name : System.Address;
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108 Namelen : not null access C.int) return C.int;
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109
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110 function C_Getsockopt
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111 (S : C.int;
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112 Level : C.int;
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113 Optname : C.int;
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114 Optval : System.Address;
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115 Optlen : not null access C.int) return C.int;
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116
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117 function Socket_Ioctl
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118 (S : C.int;
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119 Req : SOSC.IOCTL_Req_T;
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120 Arg : access C.int) return C.int;
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121
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122 function C_Listen
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123 (S : C.int;
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124 Backlog : C.int) return C.int;
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125
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126 function C_Recv
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127 (S : C.int;
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128 Msg : System.Address;
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129 Len : C.int;
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130 Flags : C.int) return C.int;
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131
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132 function C_Recvfrom
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133 (S : C.int;
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134 Msg : System.Address;
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135 Len : C.int;
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136 Flags : C.int;
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137 From : System.Address;
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138 Fromlen : not null access C.int) return C.int;
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139
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140 function C_Recvmsg
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141 (S : C.int;
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142 Msg : System.Address;
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143 Flags : C.int) return System.CRTL.ssize_t;
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144
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145 function C_Select
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146 (Nfds : C.int;
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147 Readfds : access Fd_Set;
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148 Writefds : access Fd_Set;
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149 Exceptfds : access Fd_Set;
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150 Timeout : Timeval_Access) return C.int;
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151
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152 function C_Sendmsg
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153 (S : C.int;
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154 Msg : System.Address;
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155 Flags : C.int) return System.CRTL.ssize_t;
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156
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157 function C_Sendto
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158 (S : C.int;
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159 Msg : System.Address;
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160 Len : C.int;
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161 Flags : C.int;
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162 To : System.Address;
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163 Tolen : C.int) return C.int;
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164
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165 function C_Setsockopt
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166 (S : C.int;
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167 Level : C.int;
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168 Optname : C.int;
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169 Optval : System.Address;
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170 Optlen : C.int) return C.int;
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171
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172 function C_Shutdown
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173 (S : C.int;
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174 How : C.int) return C.int;
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175
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176 function C_Socket
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177 (Domain : C.int;
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178 Typ : C.int;
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179 Protocol : C.int) return C.int;
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180
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181 function C_System
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182 (Command : System.Address) return C.int;
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183
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184 -------------------------------------------------------
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185 -- Signalling file descriptors for selector abortion --
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186 -------------------------------------------------------
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187
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188 package Signalling_Fds is
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189
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190 function Create (Fds : not null access Fd_Pair) return C.int;
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191 pragma Convention (C, Create);
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192 -- Create a pair of connected descriptors suitable for use with C_Select
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193 -- (used for signalling in Selector objects).
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194
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195 function Read (Rsig : C.int) return C.int;
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196 pragma Convention (C, Read);
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197 -- Read one byte of data from rsig, the read end of a pair of signalling
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198 -- fds created by Create_Signalling_Fds.
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199
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200 function Write (Wsig : C.int) return C.int;
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201 pragma Convention (C, Write);
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202 -- Write one byte of data to wsig, the write end of a pair of signalling
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203 -- fds created by Create_Signalling_Fds.
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204
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205 procedure Close (Sig : C.int);
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206 pragma Convention (C, Close);
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207 -- Close one end of a pair of signalling fds (ignoring any error)
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208
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209 end Signalling_Fds;
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210
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211 procedure Initialize;
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212 procedure Finalize;
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213
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214 private
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215 pragma Import (C, C_Bind, "bind");
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216 pragma Import (C, C_Close, "close");
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217 pragma Import (C, C_Gethostname, "gethostname");
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218 pragma Import (C, C_Getpeername, "getpeername");
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219 pragma Import (C, C_Getsockname, "getsockname");
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220 pragma Import (C, C_Getsockopt, "getsockopt");
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221 pragma Import (C, C_Listen, "listen");
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222 pragma Import (C, C_Select, "select");
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223 pragma Import (C, C_Setsockopt, "setsockopt");
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224 pragma Import (C, C_Shutdown, "shutdown");
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225 pragma Import (C, C_System, "system");
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226 end GNAT.Sockets.Thin;
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