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1 /* |
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2 |
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3 Copyright (C) 1996, 1997 John W. Eaton |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 2, or (at your option) any |
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10 later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, write to the Free |
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19 Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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20 02110-1301, USA. |
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21 |
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22 */ |
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23 |
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24 #ifdef HAVE_CONFIG_H |
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25 #include <config.h> |
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26 #endif |
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27 |
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28 #include <cerrno> |
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29 |
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30 #include <string.h> |
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31 |
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32 #ifdef HAVE_SYS_TYPES_H |
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33 #include <sys/types.h> |
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34 #endif |
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35 |
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36 #ifdef HAVE_UNISTD_H |
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37 #include <unistd.h> |
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38 #endif |
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39 |
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40 #ifdef HAVE_FCNTL_H |
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41 #include <fcntl.h> |
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42 #endif |
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43 |
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44 // We can't use csignal as kill is not in the std namespace, and picky |
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45 // compiler runtimes will also exclude it from global scope as well. |
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46 |
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47 #include <signal.h> |
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48 |
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49 #include "lo-utils.h" |
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50 #include "oct-syscalls.h" |
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51 #include "str-vec.h" |
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52 |
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53 #define NOT_SUPPORTED(nm) \ |
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54 nm ": not supported on this system" |
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55 |
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56 int |
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57 octave_syscalls::dup2 (int old_fd, int new_fd) |
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58 { |
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59 std::string msg; |
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60 return dup2 (old_fd, new_fd, msg); |
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61 } |
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62 |
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63 int |
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64 octave_syscalls::dup2 (int old_fd, int new_fd, std::string& msg) |
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65 { |
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66 msg = std::string (); |
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67 |
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68 int status = -1; |
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69 |
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70 #if defined (HAVE_DUP2) |
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71 status = ::dup2 (old_fd, new_fd); |
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72 |
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73 if (status < 0) |
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74 { |
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75 using namespace std; |
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76 msg = ::strerror (errno); |
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77 } |
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78 #else |
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79 msg = NOT_SUPPORTED ("dup2"); |
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80 #endif |
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81 |
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82 return status; |
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83 } |
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84 |
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85 int |
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86 octave_syscalls::execvp (const std::string& file, const string_vector& argv) |
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87 { |
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88 std::string msg; |
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89 return execvp (file, argv, msg); |
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90 } |
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91 |
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92 int |
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93 octave_syscalls::execvp (const std::string& file, const string_vector& args, |
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94 std::string& msg) |
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95 { |
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96 msg = std::string (); |
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97 |
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98 int status = -1; |
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99 |
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100 #if defined (HAVE_EXECVP) |
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101 char **argv = args.c_str_vec (); |
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102 |
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103 status = ::execvp (file.c_str (), argv); |
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104 |
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105 string_vector::delete_c_str_vec (argv); |
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106 |
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107 if (status < 0) |
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108 { |
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109 using namespace std; |
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110 msg = ::strerror (errno); |
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111 } |
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112 #else |
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113 msg = NOT_SUPPORTED ("execvp"); |
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114 #endif |
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115 |
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116 return status; |
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117 } |
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118 |
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119 int |
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120 octave_syscalls::fcntl (int fd, int cmd, long arg) |
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121 { |
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122 std::string msg; |
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123 return fcntl (fd, cmd, arg, msg); |
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124 } |
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125 |
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126 int |
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127 octave_syscalls::fcntl (int fd, int cmd, long arg, std::string& msg) |
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128 { |
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129 msg = std::string (); |
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130 |
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131 int status = -1; |
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132 |
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133 #if defined (HAVE_FCNTL) |
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134 status = ::fcntl (fd, cmd, arg); |
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135 |
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136 if (status < 0) |
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137 { |
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138 using namespace std; |
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139 msg = ::strerror (errno); |
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140 } |
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141 #else |
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142 msg = NOT_SUPPORTED ("fcntl"); |
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143 #endif |
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144 |
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145 return status; |
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146 } |
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147 |
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148 pid_t |
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149 octave_syscalls::fork (std::string& msg) |
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150 { |
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151 pid_t status = -1; |
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152 |
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153 #if defined (HAVE_FORK) |
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154 status = ::fork (); |
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155 |
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156 if (status < 0) |
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157 { |
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158 using namespace std; |
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159 msg = ::strerror (errno); |
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160 } |
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161 #else |
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162 msg = NOT_SUPPORTED ("fork"); |
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163 #endif |
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164 |
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165 return status; |
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166 } |
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167 |
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168 pid_t |
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169 octave_syscalls::vfork (std::string& msg) |
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170 { |
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171 pid_t status = -1; |
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172 |
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173 #if defined (HAVE_VFORK) || defined (HAVE_FORK) |
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174 #if defined (HAVE_VFORK) |
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175 status = ::vfork (); |
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176 #else |
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177 status = ::fork (); |
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178 #endif |
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179 |
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180 if (status < 0) |
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181 { |
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182 using namespace std; |
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183 msg = ::strerror (errno); |
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184 } |
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185 #else |
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186 msg = NOT_SUPPORTED ("vfork"); |
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187 #endif |
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188 |
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189 return status; |
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190 } |
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191 |
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192 pid_t |
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193 octave_syscalls::getpgrp (std::string& msg) |
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194 { |
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195 pid_t status = -1; |
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196 |
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197 #if defined (HAVE_GETPGRP) |
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198 status = ::getpgrp (); |
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199 |
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200 if (status < 0) |
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201 { |
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202 using namespace std; |
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203 msg = ::strerror (errno); |
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204 } |
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205 #else |
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206 msg = NOT_SUPPORTED ("getpgrp"); |
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207 #endif |
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208 |
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209 return status; |
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210 } |
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211 |
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212 pid_t |
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213 octave_syscalls::getpid (void) |
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214 { |
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215 #if defined (HAVE_GETPID) |
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216 return ::getpid (); |
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217 #else |
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218 return 0; |
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219 #endif |
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220 } |
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221 |
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222 pid_t |
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223 octave_syscalls::getppid (void) |
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224 { |
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225 #if defined (HAVE_GETPPID) |
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226 return ::getppid (); |
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227 #else |
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228 return 0; |
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229 #endif |
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230 } |
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231 |
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232 gid_t |
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233 octave_syscalls::getgid (void) |
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234 { |
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235 #if defined (HAVE_GETGID) |
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236 return ::getgid (); |
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237 #else |
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238 return 0; |
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239 #endif |
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240 } |
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241 |
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242 gid_t |
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243 octave_syscalls::getegid (void) |
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244 { |
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245 #if defined (HAVE_GETEGID) |
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246 return ::getegid (); |
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247 #else |
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248 return 0; |
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249 #endif |
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250 } |
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251 |
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252 uid_t |
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253 octave_syscalls::getuid (void) |
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254 { |
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255 #if defined (HAVE_GETUID) |
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256 return ::getuid (); |
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257 #else |
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258 return 0; |
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259 #endif |
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260 } |
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261 |
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262 uid_t |
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263 octave_syscalls::geteuid (void) |
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264 { |
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265 #if defined (HAVE_GETEUID) |
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266 return ::geteuid (); |
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267 #else |
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268 return 0; |
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269 #endif |
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270 } |
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271 |
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272 int |
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273 octave_syscalls::pipe (int *fildes) |
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274 { |
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275 std::string msg; |
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276 return pipe (fildes, msg); |
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277 } |
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278 |
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279 int |
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280 octave_syscalls::pipe (int *fildes, std::string& msg) |
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281 { |
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282 msg = std::string (); |
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283 |
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284 int status = -1; |
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285 |
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286 #if defined (HAVE_PIPE) |
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287 status = ::pipe (fildes); |
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288 |
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289 if (status < 0) |
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290 { |
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291 using namespace std; |
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292 msg = ::strerror (errno); |
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293 } |
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294 #else |
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295 msg = NOT_SUPPORTED ("pipe"); |
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296 #endif |
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297 |
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298 return status; |
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299 } |
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300 |
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301 pid_t |
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302 octave_syscalls::waitpid (pid_t pid, int *status, int options) |
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303 { |
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304 std::string msg; |
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305 return waitpid (pid, status, options, msg); |
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306 } |
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307 |
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308 pid_t |
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309 octave_syscalls::waitpid (pid_t pid, int *status, int options, |
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310 std::string& msg) |
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311 { |
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312 pid_t retval = -1; |
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313 msg = std::string (); |
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314 |
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315 #if defined (HAVE_WAITPID) |
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316 retval = ::octave_waitpid (pid, status, options); |
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317 |
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318 if (retval < 0) |
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319 { |
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320 using namespace std; |
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321 msg = ::strerror (errno); |
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322 } |
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323 #else |
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324 msg = NOT_SUPPORTED ("waitpid"); |
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325 #endif |
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326 |
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327 return retval; |
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328 } |
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329 |
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330 int |
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331 octave_syscalls::kill (pid_t pid, int sig) |
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332 { |
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333 std::string msg; |
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334 return kill (pid, sig, msg); |
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335 } |
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336 |
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337 int |
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338 octave_syscalls::kill (pid_t pid, int sig, std::string& msg) |
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339 { |
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340 msg = std::string (); |
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341 |
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342 int status = -1; |
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343 |
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344 #if defined (HAVE_KILL) |
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345 status = ::kill (pid, sig); |
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346 |
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347 if (status < 0) |
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348 { |
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349 using namespace std; |
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350 msg = ::strerror (errno); |
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351 } |
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352 #else |
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353 msg = NOT_SUPPORTED ("kill"); |
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354 #endif |
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355 |
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356 return status; |
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357 } |
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358 |
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359 /* |
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360 ;;; Local Variables: *** |
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361 ;;; mode: C++ *** |
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362 ;;; End: *** |
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363 */ |
