1 | /* $Id: $ */
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2 | /** @file
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3 | *
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4 | * The shell instance methods.
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5 | *
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6 | * Copyright (c) 2007 knut st. osmundsen <bird-src-spam@anduin.net>
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7 | *
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8 | *
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9 | * This file is part of kBuild.
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10 | *
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11 | * kBuild is free software; you can redistribute it and/or modify
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12 | * it under the terms of the GNU General Public License as published by
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13 | * the Free Software Foundation; either version 2 of the License, or
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14 | * (at your option) any later version.
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15 | *
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16 | * kBuild is distributed in the hope that it will be useful,
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17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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19 | * GNU General Public License for more details.
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20 | *
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21 | * You should have received a copy of the GNU General Public License
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22 | * along with kBuild; if not, write to the Free Software
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23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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24 | *
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25 | */
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26 |
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27 | #include <string.h>
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28 | #include "shinstance.h"
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29 |
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30 |
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31 | /**
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32 | * Creates a root shell instance.
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33 | *
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34 | * @param inherit The shell to inherit from. If NULL inherit from environment and such.
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35 | * @param argc The argument count.
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36 | * @param argv The argument vector.
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37 | *
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38 | * @returns pointer to root shell on success, NULL on failure.
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39 | */
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40 | shinstance *sh_create_root_shell(shinstance *inherit, int argc, char **argv)
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41 | {
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42 | shinstance *psh;
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43 |
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44 | psh = calloc(sizeof(*psh), 1);
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45 | if (psh)
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46 | {
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47 | /* memalloc.c */
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48 | psh->stacknleft = MINSIZE;
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49 | psh->herefd = -1;
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50 | psh->stackp = &psh->stackbase;
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51 | psh->stacknxt = psh->stackbase.space;
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52 |
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53 | /* input.c */
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54 | psh->plinno = 1;
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55 | psh->init_editline = 0;
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56 | psh->parsefile = &psh->basepf;
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57 |
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58 | /* output.c */
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59 | psh->output.bufsize = OUTBUFSIZ;
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60 | psh->output.fd = 1;
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61 | psh->output.psh = psh;
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62 | psh->errout.bufsize = 100;
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63 | psh->errout.fd = 2;
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64 | psh->errout.psh = psh;
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65 | psh->memout.fd = MEM_OUT;
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66 | psh->memout.psh = psh;
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67 | psh->out1 = &psh->output;
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68 | psh->out2 = &psh->errout;
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69 |
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70 | /* jobs.c */
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71 | psh->backgndpid = -1;
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72 | #if JOBS
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73 | psh->curjob = -1;
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74 | #endif
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75 | psh->ttyfd = -1;
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76 |
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77 | }
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78 | return psh;
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79 | }
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80 |
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81 |
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82 | char *sh_getenv(shinstance *psh, const char *var)
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83 | {
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84 | #ifdef SH_PURE_STUB_MODE
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85 | return NULL;
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86 | #elif defined(SH_STUB_MODE)
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87 | return getenv(var);
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88 | #else
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89 | #endif
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90 | }
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91 |
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92 | char **sh_environ(shinstance *psh)
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93 | {
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94 | #ifdef SH_PURE_STUB_MODE
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95 | static char *s_null[2] = {0,0};
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96 | return &s_null[0];
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97 | #elif defined(SH_STUB_MODE)
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98 | return environ;
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99 | #else
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100 | #endif
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101 | }
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102 |
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103 | const char *sh_gethomedir(shinstance *psh, const char *user)
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104 | {
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105 | #ifdef SH_PURE_STUB_MODE
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106 | return NULL;
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107 | #elif defined(SH_STUB_MODE)
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108 | # ifdef _MSC_VER
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109 | return NULL;
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110 | # else
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111 | struct passwd *pwd = getpwnam(user);
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112 | return pwd ? pwd->pw_dir;
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113 | # endif
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114 | #else
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115 | #endif
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116 | }
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117 |
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118 | int sh_sigaction(int signo, const struct sh_sigaction *newp, struct sh_sigaction *oldp)
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119 | {
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120 | #ifdef SH_PURE_STUB_MODE
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121 | return -1;
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122 | #elif defined(SH_STUB_MODE)
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123 | # ifdef _MSC_VER
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124 | return -1;
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125 | # else
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126 | struct sigaction old;
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127 | if (newp)
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128 | return -1;
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129 | if (sigaction(signo, NULL, &old))
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130 | return -1;
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131 | oldp->sh_flags = old.sa_flags;
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132 | oldp->sh_handler = old.sa_handler;
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133 | oldp->sh_mask = old.sa_mask;
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134 | return 0;
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135 | # endif
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136 | #else
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137 | #endif
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138 | }
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139 |
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140 | sh_sig_t sh_signal(shinstance *psh, int signo, sh_sig_t handler)
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141 | {
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142 | return (sh_sig_t)-1;
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143 | }
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144 |
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145 | int sh_siginterrupt(shinstance *psh, int signo, int interrupt)
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146 | {
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147 | return -1;
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148 | }
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149 |
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150 | void sh_sigemptyset(sh_sigset_t *setp)
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151 | {
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152 | memset(setp, 0, sizeof(*setp));
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153 | }
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154 |
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155 | int sh_sigprocmask(shinstance *psh, int operation, sh_sigset_t const *newp, sh_sigset_t *oldp)
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156 | {
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157 | return -1;
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158 | }
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159 |
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160 | void sh_abort(shinstance *psh)
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161 | {
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162 | #ifdef SH_PURE_STUB_MODE
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163 | #elif defined(SH_STUB_MODE)
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164 | abort();
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165 | #else
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166 | #endif
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167 | }
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168 |
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169 | void sh_raise_sigint(shinstance *psh)
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170 | {
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171 | #ifdef SH_PURE_STUB_MODE
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172 | #elif defined(SH_STUB_MODE)
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173 | raise(SIGINT);
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174 | #else
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175 | #endif
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176 | }
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177 |
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178 | int sh_kill(shinstance *psh, pid_t pid, int signo)
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179 | {
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180 | #ifdef SH_PURE_STUB_MODE
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181 | return -1;
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182 | #elif defined(SH_STUB_MODE)
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183 | # ifdef _MSC_VER
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184 | return -1;
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185 | # else
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186 | return kill(pid, signo);
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187 | # endif
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188 | #else
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189 | #endif
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190 | }
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191 |
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192 | int sh_killpg(shinstance *psh, pid_t pgid, int signo)
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193 | {
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194 | #ifdef SH_PURE_STUB_MODE
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195 | return -1;
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196 | #elif defined(SH_STUB_MODE)
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197 | # ifdef _MSC_VER
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198 | return -1;
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199 | # else
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200 | return killpg(pgid, signo);
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201 | # endif
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202 | #else
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203 | #endif
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204 | }
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205 |
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206 | clock_t sh_times(shinstance *psh, shtms *tmsp)
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207 | {
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208 | #ifdef SH_PURE_STUB_MODE
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209 | return 0;
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210 | #elif defined(SH_STUB_MODE)
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211 | # ifdef _MSC_VER
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212 | return 0;
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213 | # else
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214 | return times(tmsp);
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215 | # endif
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216 | #else
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217 | #endif
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218 | }
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219 |
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220 | int sh_sysconf_clk_tck(void)
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221 | {
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222 | #ifdef SH_PURE_STUB_MODE
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223 | return 1;
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224 | #else
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225 | # ifdef _MSC_VER
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226 | return CLK_TCK;
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227 | # else
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228 | return sysconf(_SC_CLK_TCK)
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229 | # endif
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230 | #endif
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231 | }
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232 |
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233 | pid_t sh_fork(shinstance *psh)
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234 | {
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235 | #ifdef SH_PURE_STUB_MODE
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236 | return -1;
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237 | #elif defined(SH_STUB_MODE)
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238 | # ifdef _MSC_VER
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239 | return -1;
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240 | # else
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241 | return fork();
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242 | # endif
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243 | #else
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244 | #endif
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245 | }
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246 |
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247 | pid_t sh_waitpid(shinstance *psh, pid_t pid, int *statusp, int flags)
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248 | {
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249 | #ifdef SH_PURE_STUB_MODE
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250 | return -1;
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251 | #elif defined(SH_STUB_MODE)
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252 | # ifdef _MSC_VER
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253 | return -1;
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254 | # else
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255 | return waitpid(pid, statusp, flags);
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256 | # endif
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257 | #else
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258 | #endif
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259 | }
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260 |
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261 | void sh__exit(shinstance *psh, int rc)
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262 | {
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263 | #ifdef SH_PURE_STUB_MODE
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264 | return -1;
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265 | #elif defined(SH_STUB_MODE)
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266 | _exit(rc);
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267 | #else
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268 | #endif
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269 | }
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270 |
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271 | int sh_execve(shinstance *psh, const char *exe, const char * const *argv, const char * const *envp)
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272 | {
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273 | #ifdef SH_PURE_STUB_MODE
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274 | return -1;
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275 | #elif defined(SH_STUB_MODE)
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276 | # ifdef _MSC_VER
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277 | return -1;
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278 | # else
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279 | return execve(exe, (char **)argv, (char **)envp);
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280 | # endif
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281 | #else
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282 | #endif
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283 | }
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284 |
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285 | uid_t sh_getuid(shinstance *psh)
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286 | {
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287 | #ifdef SH_PURE_STUB_MODE
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288 | return 0;
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289 | #elif defined(SH_STUB_MODE)
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290 | # ifdef _MSC_VER
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291 | return 0;
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292 | # else
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293 | return getuid();
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294 | # endif
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295 | #else
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296 | #endif
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297 | }
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298 |
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299 | uid_t sh_geteuid(shinstance *psh)
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300 | {
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301 | #ifdef SH_PURE_STUB_MODE
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302 | return 0;
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303 | #elif defined(SH_STUB_MODE)
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304 | # ifdef _MSC_VER
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305 | return 0;
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306 | # else
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307 | return geteuid();
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308 | # endif
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309 | #else
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310 | #endif
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311 | }
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312 |
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313 | gid_t sh_getgid(shinstance *psh)
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314 | {
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315 | #ifdef SH_PURE_STUB_MODE
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316 | return 0;
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317 | #elif defined(SH_STUB_MODE)
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318 | # ifdef _MSC_VER
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319 | return 0;
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320 | # else
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321 | return getgid();
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322 | # endif
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323 | #else
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324 | #endif
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325 | }
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326 |
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327 | gid_t sh_getegid(shinstance *psh)
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328 | {
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329 | #ifdef SH_PURE_STUB_MODE
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330 | return 0;
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331 | #elif defined(SH_STUB_MODE)
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332 | # ifdef _MSC_VER
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333 | return 0;
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334 | # else
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335 | return getegid();
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336 | # endif
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337 | #else
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338 | #endif
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339 | }
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340 |
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341 | pid_t sh_getpid(shinstance *psh)
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342 | {
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343 | #ifdef SH_PURE_STUB_MODE
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344 | return 0;
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345 | #elif defined(SH_STUB_MODE)
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346 | # ifdef _MSC_VER
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347 | return _getpid();
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348 | # else
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349 | return getpid();
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350 | # endif
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351 | #else
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352 | #endif
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353 | }
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354 |
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355 | pid_t sh_getpgrp(shinstance *psh)
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356 | {
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357 | #ifdef SH_PURE_STUB_MODE
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358 | return 0;
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359 | #elif defined(SH_STUB_MODE)
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360 | # ifdef _MSC_VER
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361 | return _getpid();
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362 | # else
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363 | return getpgrp();
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364 | # endif
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365 | #else
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366 | #endif
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367 | }
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368 |
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369 | pid_t sh_getpgid(shinstance *psh, pid_t pid)
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370 | {
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371 | #ifdef SH_PURE_STUB_MODE
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372 | return pid;
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373 | #elif defined(SH_STUB_MODE)
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374 | # ifdef _MSC_VER
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375 | return pid;
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376 | # else
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377 | return getpgid(pid);
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378 | # endif
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379 | #else
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380 | #endif
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381 | }
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382 |
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383 | int sh_setpgid(shinstance *psh, pid_t pid, pid_t pgid)
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384 | {
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385 | #ifdef SH_PURE_STUB_MODE
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386 | return -1;
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387 | #elif defined(SH_STUB_MODE)
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388 | # ifdef _MSC_VER
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389 | return -1;
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390 | # else
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391 | return setpgid(pid, pgid);
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392 | # endif
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393 | #else
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394 | #endif
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395 | }
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396 |
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397 | pid_t sh_tcgetpgrp(shinstance *psh, int fd)
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398 | {
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399 | #ifdef SH_PURE_STUB_MODE
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400 | return -1;
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401 | #elif defined(SH_STUB_MODE)
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402 | # ifdef _MSC_VER
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403 | return -1;
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404 | # else
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405 | return tcgetpgrp(fd);
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406 | # endif
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407 | #else
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408 | #endif
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409 | }
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410 |
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411 | int sh_tcsetpgrp(shinstance *psh, int fd, pid_t pgrp)
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412 | {
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413 | #ifdef SH_PURE_STUB_MODE
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414 | return -1;
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415 | #elif defined(SH_STUB_MODE)
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416 | # ifdef _MSC_VER
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417 | return -1;
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418 | # else
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419 | return tcsetpgrp(fd, pgrp);
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420 | # endif
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421 | #else
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422 | #endif
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423 | }
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424 |
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425 | int sh_getrlimit(shinstance *psh, int resid, shrlimit *limp)
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426 | {
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427 | #ifdef SH_PURE_STUB_MODE
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428 | return -1;
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429 | #elif defined(SH_STUB_MODE)
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430 | # ifdef _MSC_VER
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431 | return -1;
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432 | # else
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433 | return getrlimit(resid, limp);
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434 | # endif
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435 | #else
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436 | #endif
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437 | }
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438 |
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439 | int sh_setrlimit(shinstance *psh, int resid, const shrlimit *limp)
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440 | {
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441 | #ifdef SH_PURE_STUB_MODE
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442 | return -1;
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443 | #elif defined(SH_STUB_MODE)
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444 | # ifdef _MSC_VER
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445 | return -1;
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446 | # else
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447 | return setrlimit(resid, limp);
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448 | # endif
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449 | #else
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450 | #endif
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451 | }
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452 |
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