1 | /* Job execution and handling for GNU Make.
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2 | Copyright (C) 1988-2016 Free Software Foundation, Inc.
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3 | This file is part of GNU Make.
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4 |
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5 | GNU Make is free software; you can redistribute it and/or modify it under the
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6 | terms of the GNU General Public License as published by the Free Software
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7 | Foundation; either version 3 of the License, or (at your option) any later
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8 | version.
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9 |
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10 | GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
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11 | WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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12 | A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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13 |
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14 | You should have received a copy of the GNU General Public License along with
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15 | this program. If not, see <http://www.gnu.org/licenses/>. */
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16 |
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17 | #include "makeint.h"
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18 |
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19 | #include <assert.h>
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20 |
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21 | #include "job.h"
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22 | #include "debug.h"
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23 | #include "filedef.h"
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24 | #include "commands.h"
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25 | #include "variable.h"
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26 | #include "os.h"
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27 |
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28 | #include <string.h>
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29 |
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30 | /* Default shell to use. */
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31 | #ifdef WINDOWS32
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32 | #include <windows.h>
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33 |
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34 | const char *default_shell = "sh.exe";
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35 | int no_default_sh_exe = 1;
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36 | int batch_mode_shell = 1;
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37 | HANDLE main_thread;
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38 |
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39 | #elif defined (_AMIGA)
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40 |
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41 | const char *default_shell = "";
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42 | extern int MyExecute (char **);
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43 | int batch_mode_shell = 0;
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44 |
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45 | #elif defined (__MSDOS__)
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46 |
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47 | /* The default shell is a pointer so we can change it if Makefile
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48 | says so. It is without an explicit path so we get a chance
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49 | to search the $PATH for it (since MSDOS doesn't have standard
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50 | directories we could trust). */
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51 | const char *default_shell = "command.com";
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52 | int batch_mode_shell = 0;
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53 |
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54 | #elif defined (__EMX__)
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55 |
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56 | const char *default_shell = "/bin/sh";
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57 | int batch_mode_shell = 0;
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58 |
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59 | #elif defined (VMS)
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60 |
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61 | # include <descrip.h>
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62 | # include <stsdef.h>
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63 | const char *default_shell = "";
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64 | int batch_mode_shell = 0;
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65 |
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66 | #define strsignal vms_strsignal
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67 | char * vms_strsignal (int status);
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68 |
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69 | #ifndef C_FACILITY_NO
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70 | # define C_FACILITY_NO 0x350000
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71 | #endif
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72 | #ifndef VMS_POSIX_EXIT_MASK
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73 | # define VMS_POSIX_EXIT_MASK (C_FACILITY_NO | 0xA000)
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74 | #endif
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75 |
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76 | #else
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77 |
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78 | const char *default_shell = "/bin/sh";
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79 | int batch_mode_shell = 0;
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80 |
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81 | #endif
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82 |
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83 | #ifdef __MSDOS__
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84 | # include <process.h>
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85 | static int execute_by_shell;
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86 | static int dos_pid = 123;
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87 | int dos_status;
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88 | int dos_command_running;
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89 | #endif /* __MSDOS__ */
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90 |
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91 | #ifdef _AMIGA
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92 | # include <proto/dos.h>
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93 | static int amiga_pid = 123;
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94 | static int amiga_status;
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95 | static char amiga_bname[32];
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96 | static int amiga_batch_file;
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97 | #endif /* Amiga. */
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98 |
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99 | #ifdef VMS
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100 | # ifndef __GNUC__
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101 | # include <processes.h>
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102 | # endif
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103 | # include <starlet.h>
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104 | # include <lib$routines.h>
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105 | static void vmsWaitForChildren (int *);
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106 | #endif
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107 |
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108 | #ifdef WINDOWS32
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109 | # include <windows.h>
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110 | # include <io.h>
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111 | # include <process.h>
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112 | # include "sub_proc.h"
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113 | # include "w32err.h"
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114 | # include "pathstuff.h"
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115 | # define WAIT_NOHANG 1
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116 | #endif /* WINDOWS32 */
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117 |
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118 | #ifdef __EMX__
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119 | # include <process.h>
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120 | #endif
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121 |
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122 | #if defined (HAVE_SYS_WAIT_H) || defined (HAVE_UNION_WAIT)
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123 | # include <sys/wait.h>
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124 | #endif
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125 |
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126 | #ifdef HAVE_WAITPID
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127 | # define WAIT_NOHANG(status) waitpid (-1, (status), WNOHANG)
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128 | #else /* Don't have waitpid. */
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129 | # ifdef HAVE_WAIT3
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130 | # ifndef wait3
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131 | extern int wait3 ();
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132 | # endif
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133 | # define WAIT_NOHANG(status) wait3 ((status), WNOHANG, (struct rusage *) 0)
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134 | # endif /* Have wait3. */
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135 | #endif /* Have waitpid. */
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136 |
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137 | #if !defined (wait) && !defined (POSIX)
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138 | int wait ();
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139 | #endif
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140 |
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141 | #ifndef HAVE_UNION_WAIT
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142 |
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143 | # define WAIT_T int
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144 |
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145 | # ifndef WTERMSIG
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146 | # define WTERMSIG(x) ((x) & 0x7f)
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147 | # endif
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148 | # ifndef WCOREDUMP
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149 | # define WCOREDUMP(x) ((x) & 0x80)
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150 | # endif
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151 | # ifndef WEXITSTATUS
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152 | # define WEXITSTATUS(x) (((x) >> 8) & 0xff)
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153 | # endif
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154 | # ifndef WIFSIGNALED
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155 | # define WIFSIGNALED(x) (WTERMSIG (x) != 0)
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156 | # endif
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157 | # ifndef WIFEXITED
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158 | # define WIFEXITED(x) (WTERMSIG (x) == 0)
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159 | # endif
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160 |
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161 | #else /* Have 'union wait'. */
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162 |
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163 | # define WAIT_T union wait
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164 | # ifndef WTERMSIG
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165 | # define WTERMSIG(x) ((x).w_termsig)
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166 | # endif
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167 | # ifndef WCOREDUMP
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168 | # define WCOREDUMP(x) ((x).w_coredump)
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169 | # endif
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170 | # ifndef WEXITSTATUS
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171 | # define WEXITSTATUS(x) ((x).w_retcode)
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172 | # endif
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173 | # ifndef WIFSIGNALED
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174 | # define WIFSIGNALED(x) (WTERMSIG(x) != 0)
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175 | # endif
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176 | # ifndef WIFEXITED
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177 | # define WIFEXITED(x) (WTERMSIG(x) == 0)
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178 | # endif
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179 |
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180 | #endif /* Don't have 'union wait'. */
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181 |
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182 | #if !defined(HAVE_UNISTD_H) && !defined(WINDOWS32)
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183 | int dup2 ();
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184 | int execve ();
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185 | void _exit ();
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186 | # ifndef VMS
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187 | int geteuid ();
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188 | int getegid ();
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189 | int setgid ();
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190 | int getgid ();
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191 | # endif
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192 | #endif
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193 |
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194 | /* Different systems have different requirements for pid_t.
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195 | Plus we have to support gettext string translation... Argh. */
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196 | static const char *
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197 | pid2str (pid_t pid)
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198 | {
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199 | static char pidstring[100];
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200 | #if defined(WINDOWS32) && (__GNUC__ > 3 || _MSC_VER > 1300)
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201 | /* %Id is only needed for 64-builds, which were not supported by
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202 | older versions of Windows compilers. */
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203 | sprintf (pidstring, "%Id", pid);
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204 | #else
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205 | sprintf (pidstring, "%lu", (unsigned long) pid);
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206 | #endif
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207 | return pidstring;
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208 | }
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209 |
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210 | #ifndef HAVE_GETLOADAVG
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211 | int getloadavg (double loadavg[], int nelem);
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212 | #endif
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213 |
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214 | static void free_child (struct child *);
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215 | static void start_job_command (struct child *child);
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216 | static int load_too_high (void);
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217 | static int job_next_command (struct child *);
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218 | static int start_waiting_job (struct child *);
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219 | |
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220 |
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221 | /* Chain of all live (or recently deceased) children. */
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222 |
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223 | struct child *children = 0;
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224 |
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225 | /* Number of children currently running. */
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226 |
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227 | unsigned int job_slots_used = 0;
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228 |
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229 | /* Nonzero if the 'good' standard input is in use. */
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230 |
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231 | static int good_stdin_used = 0;
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232 |
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233 | /* Chain of children waiting to run until the load average goes down. */
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234 |
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235 | static struct child *waiting_jobs = 0;
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236 |
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237 | /* Non-zero if we use a *real* shell (always so on Unix). */
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238 |
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239 | int unixy_shell = 1;
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240 |
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241 | /* Number of jobs started in the current second. */
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242 |
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243 | unsigned long job_counter = 0;
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244 |
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245 | /* Number of jobserver tokens this instance is currently using. */
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246 |
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247 | unsigned int jobserver_tokens = 0;
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248 | |
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249 |
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250 |
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251 | #ifdef WINDOWS32
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252 | /*
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253 | * The macro which references this function is defined in makeint.h.
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254 | */
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255 | int
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256 | w32_kill (pid_t pid, int sig)
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257 | {
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258 | return ((process_kill ((HANDLE)pid, sig) == TRUE) ? 0 : -1);
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259 | }
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260 |
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261 | /* This function creates a temporary file name with an extension specified
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262 | * by the unixy arg.
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263 | * Return an xmalloc'ed string of a newly created temp file and its
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264 | * file descriptor, or die. */
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265 | static char *
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266 | create_batch_file (char const *base, int unixy, int *fd)
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267 | {
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268 | const char *const ext = unixy ? "sh" : "bat";
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269 | const char *error_string = NULL;
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270 | char temp_path[MAXPATHLEN]; /* need to know its length */
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271 | unsigned path_size = GetTempPath (sizeof temp_path, temp_path);
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272 | int path_is_dot = 0;
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273 | /* The following variable is static so we won't try to reuse a name
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274 | that was generated a little while ago, because that file might
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275 | not be on disk yet, since we use FILE_ATTRIBUTE_TEMPORARY below,
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276 | which tells the OS it doesn't need to flush the cache to disk.
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277 | If the file is not yet on disk, we might think the name is
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278 | available, while it really isn't. This happens in parallel
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279 | builds, where Make doesn't wait for one job to finish before it
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280 | launches the next one. */
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281 | static unsigned uniq = 0;
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282 | static int second_loop = 0;
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283 | const unsigned sizemax = strlen (base) + strlen (ext) + 10;
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284 |
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285 | if (path_size == 0)
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286 | {
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287 | path_size = GetCurrentDirectory (sizeof temp_path, temp_path);
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288 | path_is_dot = 1;
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289 | }
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290 |
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291 | ++uniq;
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292 | if (uniq >= 0x10000 && !second_loop)
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293 | {
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294 | /* If we already had 64K batch files in this
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295 | process, make a second loop through the numbers,
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296 | looking for free slots, i.e. files that were
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297 | deleted in the meantime. */
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298 | second_loop = 1;
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299 | uniq = 1;
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300 | }
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301 | while (path_size > 0 &&
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302 | path_size + sizemax < sizeof temp_path &&
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303 | !(uniq >= 0x10000 && second_loop))
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304 | {
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305 | unsigned size = sprintf (temp_path + path_size,
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306 | "%s%s-%x.%s",
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307 | temp_path[path_size - 1] == '\\' ? "" : "\\",
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308 | base, uniq, ext);
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309 | HANDLE h = CreateFile (temp_path, /* file name */
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310 | GENERIC_READ | GENERIC_WRITE, /* desired access */
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311 | 0, /* no share mode */
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312 | NULL, /* default security attributes */
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313 | CREATE_NEW, /* creation disposition */
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314 | FILE_ATTRIBUTE_NORMAL | /* flags and attributes */
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315 | FILE_ATTRIBUTE_TEMPORARY, /* we'll delete it */
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316 | NULL); /* no template file */
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317 |
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318 | if (h == INVALID_HANDLE_VALUE)
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319 | {
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320 | const DWORD er = GetLastError ();
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321 |
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322 | if (er == ERROR_FILE_EXISTS || er == ERROR_ALREADY_EXISTS)
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323 | {
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324 | ++uniq;
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325 | if (uniq == 0x10000 && !second_loop)
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326 | {
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327 | second_loop = 1;
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328 | uniq = 1;
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329 | }
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330 | }
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331 |
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332 | /* the temporary path is not guaranteed to exist */
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333 | else if (path_is_dot == 0)
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334 | {
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335 | path_size = GetCurrentDirectory (sizeof temp_path, temp_path);
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336 | path_is_dot = 1;
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337 | }
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338 |
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339 | else
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340 | {
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341 | error_string = map_windows32_error_to_string (er);
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342 | break;
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343 | }
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344 | }
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345 | else
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346 | {
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347 | const unsigned final_size = path_size + size + 1;
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348 | char *const path = xmalloc (final_size);
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349 | memcpy (path, temp_path, final_size);
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350 | *fd = _open_osfhandle ((intptr_t)h, 0);
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351 | if (unixy)
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352 | {
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353 | char *p;
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354 | int ch;
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355 | for (p = path; (ch = *p) != 0; ++p)
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356 | if (ch == '\\')
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357 | *p = '/';
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358 | }
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359 | return path; /* good return */
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360 | }
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361 | }
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362 |
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363 | *fd = -1;
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364 | if (error_string == NULL)
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365 | error_string = _("Cannot create a temporary file\n");
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366 | O (fatal, NILF, error_string);
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367 |
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368 | /* not reached */
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369 | return NULL;
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370 | }
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371 | #endif /* WINDOWS32 */
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372 |
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373 | #ifdef __EMX__
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374 | /* returns whether path is assumed to be a unix like shell. */
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375 | int
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376 | _is_unixy_shell (const char *path)
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377 | {
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378 | /* list of non unix shells */
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379 | const char *known_os2shells[] = {
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380 | "cmd.exe",
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381 | "cmd",
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382 | "4os2.exe",
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383 | "4os2",
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384 | "4dos.exe",
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385 | "4dos",
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386 | "command.com",
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387 | "command",
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388 | NULL
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389 | };
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390 |
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391 | /* find the rightmost '/' or '\\' */
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392 | const char *name = strrchr (path, '/');
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393 | const char *p = strrchr (path, '\\');
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394 | unsigned i;
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395 |
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396 | if (name && p) /* take the max */
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397 | name = (name > p) ? name : p;
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398 | else if (p) /* name must be 0 */
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399 | name = p;
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400 | else if (!name) /* name and p must be 0 */
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401 | name = path;
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402 |
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403 | if (*name == '/' || *name == '\\') name++;
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404 |
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405 | i = 0;
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406 | while (known_os2shells[i] != NULL)
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407 | {
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408 | if (strcasecmp (name, known_os2shells[i]) == 0)
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409 | return 0; /* not a unix shell */
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410 | i++;
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411 | }
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412 |
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413 | /* in doubt assume a unix like shell */
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414 | return 1;
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415 | }
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416 | #endif /* __EMX__ */
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417 |
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418 | /* determines whether path looks to be a Bourne-like shell. */
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419 | int
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420 | is_bourne_compatible_shell (const char *path)
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421 | {
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422 | /* List of known POSIX (or POSIX-ish) shells. */
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423 | static const char *unix_shells[] = {
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424 | "sh",
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425 | "bash",
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426 | "ksh",
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427 | "rksh",
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428 | "zsh",
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429 | "ash",
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430 | "dash",
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431 | NULL
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432 | };
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433 | const char **s;
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434 |
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435 | /* find the rightmost '/' or '\\' */
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436 | const char *name = strrchr (path, '/');
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437 | char *p = strrchr (path, '\\');
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438 |
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439 | if (name && p) /* take the max */
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440 | name = (name > p) ? name : p;
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441 | else if (p) /* name must be 0 */
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442 | name = p;
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443 | else if (!name) /* name and p must be 0 */
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444 | name = path;
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445 |
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446 | if (*name == '/' || *name == '\\')
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447 | ++name;
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448 |
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449 | /* this should be able to deal with extensions on Windows-like systems */
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450 | for (s = unix_shells; *s != NULL; ++s)
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451 | {
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452 | #if defined(WINDOWS32) || defined(__MSDOS__)
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453 | unsigned int len = strlen (*s);
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454 | if ((strlen (name) >= len && STOP_SET (name[len], MAP_DOT|MAP_NUL))
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455 | && strncasecmp (name, *s, len) == 0)
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456 | #else
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457 | if (strcmp (name, *s) == 0)
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458 | #endif
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459 | return 1; /* a known unix-style shell */
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460 | }
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461 |
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462 | /* if not on the list, assume it's not a Bourne-like shell */
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463 | return 0;
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464 | }
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465 |
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466 | |
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467 |
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468 | /* Write an error message describing the exit status given in
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469 | EXIT_CODE, EXIT_SIG, and COREDUMP, for the target TARGET_NAME.
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470 | Append "(ignored)" if IGNORED is nonzero. */
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471 |
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472 | static void
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473 | child_error (struct child *child,
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474 | int exit_code, int exit_sig, int coredump, int ignored)
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475 | {
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476 | const char *pre = "*** ";
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477 | const char *post = "";
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478 | const char *dump = "";
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479 | const struct file *f = child->file;
|
---|
480 | const floc *flocp = &f->cmds->fileinfo;
|
---|
481 | const char *nm;
|
---|
482 | size_t l;
|
---|
483 |
|
---|
484 | if (ignored && silent_flag)
|
---|
485 | return;
|
---|
486 |
|
---|
487 | if (exit_sig && coredump)
|
---|
488 | dump = _(" (core dumped)");
|
---|
489 |
|
---|
490 | if (ignored)
|
---|
491 | {
|
---|
492 | pre = "";
|
---|
493 | post = _(" (ignored)");
|
---|
494 | }
|
---|
495 |
|
---|
496 | if (! flocp->filenm)
|
---|
497 | nm = _("<builtin>");
|
---|
498 | else
|
---|
499 | {
|
---|
500 | char *a = alloca (strlen (flocp->filenm) + 1 + 11 + 1);
|
---|
501 | sprintf (a, "%s:%lu", flocp->filenm, flocp->lineno + flocp->offset);
|
---|
502 | nm = a;
|
---|
503 | }
|
---|
504 |
|
---|
505 | l = strlen (pre) + strlen (nm) + strlen (f->name) + strlen (post);
|
---|
506 |
|
---|
507 | OUTPUT_SET (&child->output);
|
---|
508 |
|
---|
509 | show_goal_error ();
|
---|
510 |
|
---|
511 | if (exit_sig == 0)
|
---|
512 | error (NILF, l + INTSTR_LENGTH,
|
---|
513 | _("%s[%s: %s] Error %d%s"), pre, nm, f->name, exit_code, post);
|
---|
514 | else
|
---|
515 | {
|
---|
516 | const char *s = strsignal (exit_sig);
|
---|
517 | error (NILF, l + strlen (s) + strlen (dump),
|
---|
518 | "%s[%s: %s] %s%s%s", pre, nm, f->name, s, dump, post);
|
---|
519 | }
|
---|
520 |
|
---|
521 | OUTPUT_UNSET ();
|
---|
522 | }
|
---|
523 | |
---|
524 |
|
---|
525 |
|
---|
526 | /* Handle a dead child. This handler may or may not ever be installed.
|
---|
527 |
|
---|
528 | If we're using the jobserver feature without pselect(), we need it.
|
---|
529 | First, installing it ensures the read will interrupt on SIGCHLD. Second,
|
---|
530 | we close the dup'd read FD to ensure we don't enter another blocking read
|
---|
531 | without reaping all the dead children. In this case we don't need the
|
---|
532 | dead_children count.
|
---|
533 |
|
---|
534 | If we don't have either waitpid or wait3, then make is unreliable, but we
|
---|
535 | use the dead_children count to reap children as best we can. */
|
---|
536 |
|
---|
537 | static unsigned int dead_children = 0;
|
---|
538 |
|
---|
539 | RETSIGTYPE
|
---|
540 | child_handler (int sig UNUSED)
|
---|
541 | {
|
---|
542 | ++dead_children;
|
---|
543 |
|
---|
544 | jobserver_signal ();
|
---|
545 |
|
---|
546 | #ifdef __EMX__
|
---|
547 | /* The signal handler must called only once! */
|
---|
548 | signal (SIGCHLD, SIG_DFL);
|
---|
549 | #endif
|
---|
550 | }
|
---|
551 |
|
---|
552 | extern pid_t shell_function_pid;
|
---|
553 |
|
---|
554 | /* Reap all dead children, storing the returned status and the new command
|
---|
555 | state ('cs_finished') in the 'file' member of the 'struct child' for the
|
---|
556 | dead child, and removing the child from the chain. In addition, if BLOCK
|
---|
557 | nonzero, we block in this function until we've reaped at least one
|
---|
558 | complete child, waiting for it to die if necessary. If ERR is nonzero,
|
---|
559 | print an error message first. */
|
---|
560 |
|
---|
561 | void
|
---|
562 | reap_children (int block, int err)
|
---|
563 | {
|
---|
564 | #ifndef WINDOWS32
|
---|
565 | WAIT_T status;
|
---|
566 | #endif
|
---|
567 | /* Initially, assume we have some. */
|
---|
568 | int reap_more = 1;
|
---|
569 |
|
---|
570 | #ifdef WAIT_NOHANG
|
---|
571 | # define REAP_MORE reap_more
|
---|
572 | #else
|
---|
573 | # define REAP_MORE dead_children
|
---|
574 | #endif
|
---|
575 |
|
---|
576 | /* As long as:
|
---|
577 |
|
---|
578 | We have at least one child outstanding OR a shell function in progress,
|
---|
579 | AND
|
---|
580 | We're blocking for a complete child OR there are more children to reap
|
---|
581 |
|
---|
582 | we'll keep reaping children. */
|
---|
583 |
|
---|
584 | while ((children != 0 || shell_function_pid != 0)
|
---|
585 | && (block || REAP_MORE))
|
---|
586 | {
|
---|
587 | unsigned int remote = 0;
|
---|
588 | pid_t pid;
|
---|
589 | int exit_code, exit_sig, coredump;
|
---|
590 | struct child *lastc, *c;
|
---|
591 | int child_failed;
|
---|
592 | int any_remote, any_local;
|
---|
593 | int dontcare;
|
---|
594 |
|
---|
595 | if (err && block)
|
---|
596 | {
|
---|
597 | static int printed = 0;
|
---|
598 |
|
---|
599 | /* We might block for a while, so let the user know why.
|
---|
600 | Only print this message once no matter how many jobs are left. */
|
---|
601 | fflush (stdout);
|
---|
602 | if (!printed)
|
---|
603 | O (error, NILF, _("*** Waiting for unfinished jobs...."));
|
---|
604 | printed = 1;
|
---|
605 | }
|
---|
606 |
|
---|
607 | /* We have one less dead child to reap. As noted in
|
---|
608 | child_handler() above, this count is completely unimportant for
|
---|
609 | all modern, POSIX-y systems that support wait3() or waitpid().
|
---|
610 | The rest of this comment below applies only to early, broken
|
---|
611 | pre-POSIX systems. We keep the count only because... it's there...
|
---|
612 |
|
---|
613 | The test and decrement are not atomic; if it is compiled into:
|
---|
614 | register = dead_children - 1;
|
---|
615 | dead_children = register;
|
---|
616 | a SIGCHLD could come between the two instructions.
|
---|
617 | child_handler increments dead_children.
|
---|
618 | The second instruction here would lose that increment. But the
|
---|
619 | only effect of dead_children being wrong is that we might wait
|
---|
620 | longer than necessary to reap a child, and lose some parallelism;
|
---|
621 | and we might print the "Waiting for unfinished jobs" message above
|
---|
622 | when not necessary. */
|
---|
623 |
|
---|
624 | if (dead_children > 0)
|
---|
625 | --dead_children;
|
---|
626 |
|
---|
627 | any_remote = 0;
|
---|
628 | any_local = shell_function_pid != 0;
|
---|
629 | for (c = children; c != 0; c = c->next)
|
---|
630 | {
|
---|
631 | any_remote |= c->remote;
|
---|
632 | any_local |= ! c->remote;
|
---|
633 | DB (DB_JOBS, (_("Live child %p (%s) PID %s %s\n"),
|
---|
634 | c, c->file->name, pid2str (c->pid),
|
---|
635 | c->remote ? _(" (remote)") : ""));
|
---|
636 | #ifdef VMS
|
---|
637 | break;
|
---|
638 | #endif
|
---|
639 | }
|
---|
640 |
|
---|
641 | /* First, check for remote children. */
|
---|
642 | if (any_remote)
|
---|
643 | pid = remote_status (&exit_code, &exit_sig, &coredump, 0);
|
---|
644 | else
|
---|
645 | pid = 0;
|
---|
646 |
|
---|
647 | if (pid > 0)
|
---|
648 | /* We got a remote child. */
|
---|
649 | remote = 1;
|
---|
650 | else if (pid < 0)
|
---|
651 | {
|
---|
652 | /* A remote status command failed miserably. Punt. */
|
---|
653 | remote_status_lose:
|
---|
654 | pfatal_with_name ("remote_status");
|
---|
655 | }
|
---|
656 | else
|
---|
657 | {
|
---|
658 | /* No remote children. Check for local children. */
|
---|
659 | #if !defined(__MSDOS__) && !defined(_AMIGA) && !defined(WINDOWS32)
|
---|
660 | if (any_local)
|
---|
661 | {
|
---|
662 | #ifdef VMS
|
---|
663 | /* Todo: This needs more untangling multi-process support */
|
---|
664 | /* Just do single child process support now */
|
---|
665 | vmsWaitForChildren (&status);
|
---|
666 | pid = c->pid;
|
---|
667 |
|
---|
668 | /* VMS failure status can not be fully translated */
|
---|
669 | status = $VMS_STATUS_SUCCESS (c->cstatus) ? 0 : (1 << 8);
|
---|
670 |
|
---|
671 | /* A Posix failure can be exactly translated */
|
---|
672 | if ((c->cstatus & VMS_POSIX_EXIT_MASK) == VMS_POSIX_EXIT_MASK)
|
---|
673 | status = (c->cstatus >> 3 & 255) << 8;
|
---|
674 | #else
|
---|
675 | #ifdef WAIT_NOHANG
|
---|
676 | if (!block)
|
---|
677 | pid = WAIT_NOHANG (&status);
|
---|
678 | else
|
---|
679 | #endif
|
---|
680 | EINTRLOOP (pid, wait (&status));
|
---|
681 | #endif /* !VMS */
|
---|
682 | }
|
---|
683 | else
|
---|
684 | pid = 0;
|
---|
685 |
|
---|
686 | if (pid < 0)
|
---|
687 | {
|
---|
688 | /* The wait*() failed miserably. Punt. */
|
---|
689 | pfatal_with_name ("wait");
|
---|
690 | }
|
---|
691 | else if (pid > 0)
|
---|
692 | {
|
---|
693 | /* We got a child exit; chop the status word up. */
|
---|
694 | exit_code = WEXITSTATUS (status);
|
---|
695 | exit_sig = WIFSIGNALED (status) ? WTERMSIG (status) : 0;
|
---|
696 | coredump = WCOREDUMP (status);
|
---|
697 |
|
---|
698 | /* If we have started jobs in this second, remove one. */
|
---|
699 | if (job_counter)
|
---|
700 | --job_counter;
|
---|
701 | }
|
---|
702 | else
|
---|
703 | {
|
---|
704 | /* No local children are dead. */
|
---|
705 | reap_more = 0;
|
---|
706 |
|
---|
707 | if (!block || !any_remote)
|
---|
708 | break;
|
---|
709 |
|
---|
710 | /* Now try a blocking wait for a remote child. */
|
---|
711 | pid = remote_status (&exit_code, &exit_sig, &coredump, 1);
|
---|
712 | if (pid < 0)
|
---|
713 | goto remote_status_lose;
|
---|
714 | else if (pid == 0)
|
---|
715 | /* No remote children either. Finally give up. */
|
---|
716 | break;
|
---|
717 |
|
---|
718 | /* We got a remote child. */
|
---|
719 | remote = 1;
|
---|
720 | }
|
---|
721 | #endif /* !__MSDOS__, !Amiga, !WINDOWS32. */
|
---|
722 |
|
---|
723 | #ifdef __MSDOS__
|
---|
724 | /* Life is very different on MSDOS. */
|
---|
725 | pid = dos_pid - 1;
|
---|
726 | status = dos_status;
|
---|
727 | exit_code = WEXITSTATUS (status);
|
---|
728 | if (exit_code == 0xff)
|
---|
729 | exit_code = -1;
|
---|
730 | exit_sig = WIFSIGNALED (status) ? WTERMSIG (status) : 0;
|
---|
731 | coredump = 0;
|
---|
732 | #endif /* __MSDOS__ */
|
---|
733 | #ifdef _AMIGA
|
---|
734 | /* Same on Amiga */
|
---|
735 | pid = amiga_pid - 1;
|
---|
736 | status = amiga_status;
|
---|
737 | exit_code = amiga_status;
|
---|
738 | exit_sig = 0;
|
---|
739 | coredump = 0;
|
---|
740 | #endif /* _AMIGA */
|
---|
741 | #ifdef WINDOWS32
|
---|
742 | {
|
---|
743 | HANDLE hPID;
|
---|
744 | HANDLE hcTID, hcPID;
|
---|
745 | DWORD dwWaitStatus = 0;
|
---|
746 | exit_code = 0;
|
---|
747 | exit_sig = 0;
|
---|
748 | coredump = 0;
|
---|
749 |
|
---|
750 | /* Record the thread ID of the main process, so that we
|
---|
751 | could suspend it in the signal handler. */
|
---|
752 | if (!main_thread)
|
---|
753 | {
|
---|
754 | hcTID = GetCurrentThread ();
|
---|
755 | hcPID = GetCurrentProcess ();
|
---|
756 | if (!DuplicateHandle (hcPID, hcTID, hcPID, &main_thread, 0,
|
---|
757 | FALSE, DUPLICATE_SAME_ACCESS))
|
---|
758 | {
|
---|
759 | DWORD e = GetLastError ();
|
---|
760 | fprintf (stderr,
|
---|
761 | "Determine main thread ID (Error %ld: %s)\n",
|
---|
762 | e, map_windows32_error_to_string (e));
|
---|
763 | }
|
---|
764 | else
|
---|
765 | DB (DB_VERBOSE, ("Main thread handle = %p\n", main_thread));
|
---|
766 | }
|
---|
767 |
|
---|
768 | /* wait for anything to finish */
|
---|
769 | hPID = process_wait_for_any (block, &dwWaitStatus);
|
---|
770 | if (hPID)
|
---|
771 | {
|
---|
772 | /* was an error found on this process? */
|
---|
773 | int werr = process_last_err (hPID);
|
---|
774 |
|
---|
775 | /* get exit data */
|
---|
776 | exit_code = process_exit_code (hPID);
|
---|
777 |
|
---|
778 | if (werr)
|
---|
779 | fprintf (stderr, "make (e=%d): %s", exit_code,
|
---|
780 | map_windows32_error_to_string (exit_code));
|
---|
781 |
|
---|
782 | /* signal */
|
---|
783 | exit_sig = process_signal (hPID);
|
---|
784 |
|
---|
785 | /* cleanup process */
|
---|
786 | process_cleanup (hPID);
|
---|
787 |
|
---|
788 | coredump = 0;
|
---|
789 | }
|
---|
790 | else if (dwWaitStatus == WAIT_FAILED)
|
---|
791 | {
|
---|
792 | /* The WaitForMultipleObjects() failed miserably. Punt. */
|
---|
793 | pfatal_with_name ("WaitForMultipleObjects");
|
---|
794 | }
|
---|
795 | else if (dwWaitStatus == WAIT_TIMEOUT)
|
---|
796 | {
|
---|
797 | /* No child processes are finished. Give up waiting. */
|
---|
798 | reap_more = 0;
|
---|
799 | break;
|
---|
800 | }
|
---|
801 |
|
---|
802 | pid = (pid_t) hPID;
|
---|
803 | }
|
---|
804 | #endif /* WINDOWS32 */
|
---|
805 | }
|
---|
806 |
|
---|
807 | /* Check if this is the child of the 'shell' function. */
|
---|
808 | if (!remote && pid == shell_function_pid)
|
---|
809 | {
|
---|
810 | shell_completed (exit_code, exit_sig);
|
---|
811 | break;
|
---|
812 | }
|
---|
813 |
|
---|
814 | /* Search for a child matching the deceased one. */
|
---|
815 | lastc = 0;
|
---|
816 | for (c = children; c != 0; lastc = c, c = c->next)
|
---|
817 | if (c->pid == pid && c->remote == remote)
|
---|
818 | break;
|
---|
819 |
|
---|
820 | if (c == 0)
|
---|
821 | /* An unknown child died.
|
---|
822 | Ignore it; it was inherited from our invoker. */
|
---|
823 | continue;
|
---|
824 |
|
---|
825 | /* Determine the failure status: 0 for success, 1 for updating target in
|
---|
826 | question mode, 2 for anything else. */
|
---|
827 | if (exit_sig == 0 && exit_code == 0)
|
---|
828 | child_failed = MAKE_SUCCESS;
|
---|
829 | else if (exit_sig == 0 && exit_code == 1 && question_flag && c->recursive)
|
---|
830 | child_failed = MAKE_TROUBLE;
|
---|
831 | else
|
---|
832 | child_failed = MAKE_FAILURE;
|
---|
833 |
|
---|
834 | DB (DB_JOBS, (child_failed
|
---|
835 | ? _("Reaping losing child %p PID %s %s\n")
|
---|
836 | : _("Reaping winning child %p PID %s %s\n"),
|
---|
837 | c, pid2str (c->pid), c->remote ? _(" (remote)") : ""));
|
---|
838 |
|
---|
839 | if (c->sh_batch_file)
|
---|
840 | {
|
---|
841 | int rm_status;
|
---|
842 |
|
---|
843 | DB (DB_JOBS, (_("Cleaning up temp batch file %s\n"),
|
---|
844 | c->sh_batch_file));
|
---|
845 |
|
---|
846 | errno = 0;
|
---|
847 | rm_status = remove (c->sh_batch_file);
|
---|
848 | if (rm_status)
|
---|
849 | DB (DB_JOBS, (_("Cleaning up temp batch file %s failed (%d)\n"),
|
---|
850 | c->sh_batch_file, errno));
|
---|
851 |
|
---|
852 | /* all done with memory */
|
---|
853 | free (c->sh_batch_file);
|
---|
854 | c->sh_batch_file = NULL;
|
---|
855 | }
|
---|
856 |
|
---|
857 | /* If this child had the good stdin, say it is now free. */
|
---|
858 | if (c->good_stdin)
|
---|
859 | good_stdin_used = 0;
|
---|
860 |
|
---|
861 | dontcare = c->dontcare;
|
---|
862 |
|
---|
863 | if (child_failed && !c->noerror && !ignore_errors_flag)
|
---|
864 | {
|
---|
865 | /* The commands failed. Write an error message,
|
---|
866 | delete non-precious targets, and abort. */
|
---|
867 | static int delete_on_error = -1;
|
---|
868 |
|
---|
869 | if (!dontcare && child_failed == MAKE_FAILURE)
|
---|
870 | child_error (c, exit_code, exit_sig, coredump, 0);
|
---|
871 |
|
---|
872 | c->file->update_status = child_failed == MAKE_FAILURE ? us_failed : us_question;
|
---|
873 | if (delete_on_error == -1)
|
---|
874 | {
|
---|
875 | struct file *f = lookup_file (".DELETE_ON_ERROR");
|
---|
876 | delete_on_error = f != 0 && f->is_target;
|
---|
877 | }
|
---|
878 | if (exit_sig != 0 || delete_on_error)
|
---|
879 | delete_child_targets (c);
|
---|
880 | }
|
---|
881 | else
|
---|
882 | {
|
---|
883 | if (child_failed)
|
---|
884 | {
|
---|
885 | /* The commands failed, but we don't care. */
|
---|
886 | child_error (c, exit_code, exit_sig, coredump, 1);
|
---|
887 | child_failed = 0;
|
---|
888 | }
|
---|
889 |
|
---|
890 | /* If there are more commands to run, try to start them. */
|
---|
891 | if (job_next_command (c))
|
---|
892 | {
|
---|
893 | if (handling_fatal_signal)
|
---|
894 | {
|
---|
895 | /* Never start new commands while we are dying.
|
---|
896 | Since there are more commands that wanted to be run,
|
---|
897 | the target was not completely remade. So we treat
|
---|
898 | this as if a command had failed. */
|
---|
899 | c->file->update_status = us_failed;
|
---|
900 | }
|
---|
901 | else
|
---|
902 | {
|
---|
903 | #ifndef NO_OUTPUT_SYNC
|
---|
904 | /* If we're sync'ing per line, write the previous line's
|
---|
905 | output before starting the next one. */
|
---|
906 | if (output_sync == OUTPUT_SYNC_LINE)
|
---|
907 | output_dump (&c->output);
|
---|
908 | #endif
|
---|
909 | /* Check again whether to start remotely.
|
---|
910 | Whether or not we want to changes over time.
|
---|
911 | Also, start_remote_job may need state set up
|
---|
912 | by start_remote_job_p. */
|
---|
913 | c->remote = start_remote_job_p (0);
|
---|
914 | start_job_command (c);
|
---|
915 | /* Fatal signals are left blocked in case we were
|
---|
916 | about to put that child on the chain. But it is
|
---|
917 | already there, so it is safe for a fatal signal to
|
---|
918 | arrive now; it will clean up this child's targets. */
|
---|
919 | unblock_sigs ();
|
---|
920 | if (c->file->command_state == cs_running)
|
---|
921 | /* We successfully started the new command.
|
---|
922 | Loop to reap more children. */
|
---|
923 | continue;
|
---|
924 | }
|
---|
925 |
|
---|
926 | if (c->file->update_status != us_success)
|
---|
927 | /* We failed to start the commands. */
|
---|
928 | delete_child_targets (c);
|
---|
929 | }
|
---|
930 | else
|
---|
931 | /* There are no more commands. We got through them all
|
---|
932 | without an unignored error. Now the target has been
|
---|
933 | successfully updated. */
|
---|
934 | c->file->update_status = us_success;
|
---|
935 | }
|
---|
936 |
|
---|
937 | /* When we get here, all the commands for c->file are finished. */
|
---|
938 |
|
---|
939 | #ifndef NO_OUTPUT_SYNC
|
---|
940 | /* Synchronize any remaining parallel output. */
|
---|
941 | output_dump (&c->output);
|
---|
942 | #endif
|
---|
943 |
|
---|
944 | /* At this point c->file->update_status is success or failed. But
|
---|
945 | c->file->command_state is still cs_running if all the commands
|
---|
946 | ran; notice_finish_file looks for cs_running to tell it that
|
---|
947 | it's interesting to check the file's modtime again now. */
|
---|
948 |
|
---|
949 | if (! handling_fatal_signal)
|
---|
950 | /* Notice if the target of the commands has been changed.
|
---|
951 | This also propagates its values for command_state and
|
---|
952 | update_status to its also_make files. */
|
---|
953 | notice_finished_file (c->file);
|
---|
954 |
|
---|
955 | DB (DB_JOBS, (_("Removing child %p PID %s%s from chain.\n"),
|
---|
956 | c, pid2str (c->pid), c->remote ? _(" (remote)") : ""));
|
---|
957 |
|
---|
958 | /* Block fatal signals while frobnicating the list, so that
|
---|
959 | children and job_slots_used are always consistent. Otherwise
|
---|
960 | a fatal signal arriving after the child is off the chain and
|
---|
961 | before job_slots_used is decremented would believe a child was
|
---|
962 | live and call reap_children again. */
|
---|
963 | block_sigs ();
|
---|
964 |
|
---|
965 | /* There is now another slot open. */
|
---|
966 | if (job_slots_used > 0)
|
---|
967 | --job_slots_used;
|
---|
968 |
|
---|
969 | /* Remove the child from the chain and free it. */
|
---|
970 | if (lastc == 0)
|
---|
971 | children = c->next;
|
---|
972 | else
|
---|
973 | lastc->next = c->next;
|
---|
974 |
|
---|
975 | free_child (c);
|
---|
976 |
|
---|
977 | unblock_sigs ();
|
---|
978 |
|
---|
979 | /* If the job failed, and the -k flag was not given, die,
|
---|
980 | unless we are already in the process of dying. */
|
---|
981 | if (!err && child_failed && !dontcare && !keep_going_flag &&
|
---|
982 | /* fatal_error_signal will die with the right signal. */
|
---|
983 | !handling_fatal_signal)
|
---|
984 | die (child_failed);
|
---|
985 |
|
---|
986 | /* Only block for one child. */
|
---|
987 | block = 0;
|
---|
988 | }
|
---|
989 |
|
---|
990 | return;
|
---|
991 | }
|
---|
992 | |
---|
993 |
|
---|
994 | /* Free the storage allocated for CHILD. */
|
---|
995 |
|
---|
996 | static void
|
---|
997 | free_child (struct child *child)
|
---|
998 | {
|
---|
999 | output_close (&child->output);
|
---|
1000 |
|
---|
1001 | if (!jobserver_tokens)
|
---|
1002 | ONS (fatal, NILF, "INTERNAL: Freeing child %p (%s) but no tokens left!\n",
|
---|
1003 | child, child->file->name);
|
---|
1004 |
|
---|
1005 | /* If we're using the jobserver and this child is not the only outstanding
|
---|
1006 | job, put a token back into the pipe for it. */
|
---|
1007 |
|
---|
1008 | if (jobserver_enabled () && jobserver_tokens > 1)
|
---|
1009 | {
|
---|
1010 | jobserver_release (1);
|
---|
1011 | DB (DB_JOBS, (_("Released token for child %p (%s).\n"),
|
---|
1012 | child, child->file->name));
|
---|
1013 | }
|
---|
1014 |
|
---|
1015 | --jobserver_tokens;
|
---|
1016 |
|
---|
1017 | if (handling_fatal_signal) /* Don't bother free'ing if about to die. */
|
---|
1018 | return;
|
---|
1019 |
|
---|
1020 | if (child->command_lines != 0)
|
---|
1021 | {
|
---|
1022 | register unsigned int i;
|
---|
1023 | for (i = 0; i < child->file->cmds->ncommand_lines; ++i)
|
---|
1024 | free (child->command_lines[i]);
|
---|
1025 | free (child->command_lines);
|
---|
1026 | }
|
---|
1027 |
|
---|
1028 | if (child->environment != 0)
|
---|
1029 | {
|
---|
1030 | register char **ep = child->environment;
|
---|
1031 | while (*ep != 0)
|
---|
1032 | free (*ep++);
|
---|
1033 | free (child->environment);
|
---|
1034 | }
|
---|
1035 |
|
---|
1036 | free (child);
|
---|
1037 | }
|
---|
1038 | |
---|
1039 |
|
---|
1040 | #ifdef POSIX
|
---|
1041 | extern sigset_t fatal_signal_set;
|
---|
1042 | #endif
|
---|
1043 |
|
---|
1044 | void
|
---|
1045 | block_sigs (void)
|
---|
1046 | {
|
---|
1047 | #ifdef POSIX
|
---|
1048 | (void) sigprocmask (SIG_BLOCK, &fatal_signal_set, (sigset_t *) 0);
|
---|
1049 | #else
|
---|
1050 | # ifdef HAVE_SIGSETMASK
|
---|
1051 | (void) sigblock (fatal_signal_mask);
|
---|
1052 | # endif
|
---|
1053 | #endif
|
---|
1054 | }
|
---|
1055 |
|
---|
1056 | #ifdef POSIX
|
---|
1057 | void
|
---|
1058 | unblock_sigs (void)
|
---|
1059 | {
|
---|
1060 | sigset_t empty;
|
---|
1061 | sigemptyset (&empty);
|
---|
1062 | sigprocmask (SIG_SETMASK, &empty, (sigset_t *) 0);
|
---|
1063 | }
|
---|
1064 | #endif
|
---|
1065 |
|
---|
1066 |
|
---|
1067 | /* Start a job to run the commands specified in CHILD.
|
---|
1068 | CHILD is updated to reflect the commands and ID of the child process.
|
---|
1069 |
|
---|
1070 | NOTE: On return fatal signals are blocked! The caller is responsible
|
---|
1071 | for calling 'unblock_sigs', once the new child is safely on the chain so
|
---|
1072 | it can be cleaned up in the event of a fatal signal. */
|
---|
1073 |
|
---|
1074 | static void
|
---|
1075 | start_job_command (struct child *child)
|
---|
1076 | {
|
---|
1077 | int flags;
|
---|
1078 | char *p;
|
---|
1079 | #ifdef VMS
|
---|
1080 | char *argv;
|
---|
1081 | #else
|
---|
1082 | char **argv;
|
---|
1083 | #endif
|
---|
1084 |
|
---|
1085 | /* If we have a completely empty commandset, stop now. */
|
---|
1086 | if (!child->command_ptr)
|
---|
1087 | goto next_command;
|
---|
1088 |
|
---|
1089 | /* Combine the flags parsed for the line itself with
|
---|
1090 | the flags specified globally for this target. */
|
---|
1091 | flags = (child->file->command_flags
|
---|
1092 | | child->file->cmds->lines_flags[child->command_line - 1]);
|
---|
1093 |
|
---|
1094 | p = child->command_ptr;
|
---|
1095 | child->noerror = ((flags & COMMANDS_NOERROR) != 0);
|
---|
1096 |
|
---|
1097 | while (*p != '\0')
|
---|
1098 | {
|
---|
1099 | if (*p == '@')
|
---|
1100 | flags |= COMMANDS_SILENT;
|
---|
1101 | else if (*p == '+')
|
---|
1102 | flags |= COMMANDS_RECURSE;
|
---|
1103 | else if (*p == '-')
|
---|
1104 | child->noerror = 1;
|
---|
1105 | /* Don't skip newlines. */
|
---|
1106 | else if (!ISBLANK (*p))
|
---|
1107 | break;
|
---|
1108 | ++p;
|
---|
1109 | }
|
---|
1110 |
|
---|
1111 | child->recursive = ((flags & COMMANDS_RECURSE) != 0);
|
---|
1112 |
|
---|
1113 | /* Update the file's command flags with any new ones we found. We only
|
---|
1114 | keep the COMMANDS_RECURSE setting. Even this isn't 100% correct; we are
|
---|
1115 | now marking more commands recursive than should be in the case of
|
---|
1116 | multiline define/endef scripts where only one line is marked "+". In
|
---|
1117 | order to really fix this, we'll have to keep a lines_flags for every
|
---|
1118 | actual line, after expansion. */
|
---|
1119 | child->file->cmds->lines_flags[child->command_line - 1] |= flags & COMMANDS_RECURSE;
|
---|
1120 |
|
---|
1121 | /* POSIX requires that a recipe prefix after a backslash-newline should
|
---|
1122 | be ignored. Remove it now so the output is correct. */
|
---|
1123 | {
|
---|
1124 | char prefix = child->file->cmds->recipe_prefix;
|
---|
1125 | char *p1, *p2;
|
---|
1126 | p1 = p2 = p;
|
---|
1127 | while (*p1 != '\0')
|
---|
1128 | {
|
---|
1129 | *(p2++) = *p1;
|
---|
1130 | if (p1[0] == '\n' && p1[1] == prefix)
|
---|
1131 | ++p1;
|
---|
1132 | ++p1;
|
---|
1133 | }
|
---|
1134 | *p2 = *p1;
|
---|
1135 | }
|
---|
1136 |
|
---|
1137 | /* Figure out an argument list from this command line. */
|
---|
1138 | {
|
---|
1139 | char *end = 0;
|
---|
1140 | #ifdef VMS
|
---|
1141 | /* Skip any leading whitespace */
|
---|
1142 | while (*p)
|
---|
1143 | {
|
---|
1144 | if (!ISSPACE (*p))
|
---|
1145 | {
|
---|
1146 | if (*p != '\\')
|
---|
1147 | break;
|
---|
1148 | if ((p[1] != '\n') && (p[1] != 'n') && (p[1] != 't'))
|
---|
1149 | break;
|
---|
1150 | }
|
---|
1151 | p++;
|
---|
1152 | }
|
---|
1153 |
|
---|
1154 | argv = p;
|
---|
1155 | /* Although construct_command_argv contains some code for VMS, it was/is
|
---|
1156 | not called/used. Please note, for VMS argv is a string (not an array
|
---|
1157 | of strings) which contains the complete command line, which for
|
---|
1158 | multi-line variables still includes the newlines. So detect newlines
|
---|
1159 | and set 'end' (which is used for child->command_ptr) instead of
|
---|
1160 | (re-)writing construct_command_argv */
|
---|
1161 | if (!one_shell)
|
---|
1162 | {
|
---|
1163 | char *s = p;
|
---|
1164 | int instring = 0;
|
---|
1165 | while (*s)
|
---|
1166 | {
|
---|
1167 | if (*s == '"')
|
---|
1168 | instring = !instring;
|
---|
1169 | else if (*s == '\\' && !instring && *(s+1) != 0)
|
---|
1170 | s++;
|
---|
1171 | else if (*s == '\n' && !instring)
|
---|
1172 | {
|
---|
1173 | end = s;
|
---|
1174 | break;
|
---|
1175 | }
|
---|
1176 | ++s;
|
---|
1177 | }
|
---|
1178 | }
|
---|
1179 | #else
|
---|
1180 | argv = construct_command_argv (p, &end, child->file,
|
---|
1181 | child->file->cmds->lines_flags[child->command_line - 1],
|
---|
1182 | &child->sh_batch_file);
|
---|
1183 | #endif
|
---|
1184 | if (end == NULL)
|
---|
1185 | child->command_ptr = NULL;
|
---|
1186 | else
|
---|
1187 | {
|
---|
1188 | *end++ = '\0';
|
---|
1189 | child->command_ptr = end;
|
---|
1190 | }
|
---|
1191 | }
|
---|
1192 |
|
---|
1193 | /* If -q was given, say that updating 'failed' if there was any text on the
|
---|
1194 | command line, or 'succeeded' otherwise. The exit status of 1 tells the
|
---|
1195 | user that -q is saying 'something to do'; the exit status for a random
|
---|
1196 | error is 2. */
|
---|
1197 | if (argv != 0 && question_flag && !(flags & COMMANDS_RECURSE))
|
---|
1198 | {
|
---|
1199 | #ifndef VMS
|
---|
1200 | free (argv[0]);
|
---|
1201 | free (argv);
|
---|
1202 | #endif
|
---|
1203 | #ifdef VMS
|
---|
1204 | /* On VMS, argv[0] can be a null string here */
|
---|
1205 | if (argv[0] != 0)
|
---|
1206 | {
|
---|
1207 | #endif
|
---|
1208 | child->file->update_status = us_question;
|
---|
1209 | notice_finished_file (child->file);
|
---|
1210 | return;
|
---|
1211 | #ifdef VMS
|
---|
1212 | }
|
---|
1213 | #endif
|
---|
1214 | }
|
---|
1215 |
|
---|
1216 | if (touch_flag && !(flags & COMMANDS_RECURSE))
|
---|
1217 | {
|
---|
1218 | /* Go on to the next command. It might be the recursive one.
|
---|
1219 | We construct ARGV only to find the end of the command line. */
|
---|
1220 | #ifndef VMS
|
---|
1221 | if (argv)
|
---|
1222 | {
|
---|
1223 | free (argv[0]);
|
---|
1224 | free (argv);
|
---|
1225 | }
|
---|
1226 | #endif
|
---|
1227 | argv = 0;
|
---|
1228 | }
|
---|
1229 |
|
---|
1230 | if (argv == 0)
|
---|
1231 | {
|
---|
1232 | next_command:
|
---|
1233 | #ifdef __MSDOS__
|
---|
1234 | execute_by_shell = 0; /* in case construct_command_argv sets it */
|
---|
1235 | #endif
|
---|
1236 | /* This line has no commands. Go to the next. */
|
---|
1237 | if (job_next_command (child))
|
---|
1238 | start_job_command (child);
|
---|
1239 | else
|
---|
1240 | {
|
---|
1241 | /* No more commands. Make sure we're "running"; we might not be if
|
---|
1242 | (e.g.) all commands were skipped due to -n. */
|
---|
1243 | set_command_state (child->file, cs_running);
|
---|
1244 | child->file->update_status = us_success;
|
---|
1245 | notice_finished_file (child->file);
|
---|
1246 | }
|
---|
1247 |
|
---|
1248 | OUTPUT_UNSET();
|
---|
1249 | return;
|
---|
1250 | }
|
---|
1251 |
|
---|
1252 | /* Are we going to synchronize this command's output? Do so if either we're
|
---|
1253 | in SYNC_RECURSE mode or this command is not recursive. We'll also check
|
---|
1254 | output_sync separately below in case it changes due to error. */
|
---|
1255 | child->output.syncout = output_sync && (output_sync == OUTPUT_SYNC_RECURSE
|
---|
1256 | || !(flags & COMMANDS_RECURSE));
|
---|
1257 |
|
---|
1258 | OUTPUT_SET (&child->output);
|
---|
1259 |
|
---|
1260 | #ifndef NO_OUTPUT_SYNC
|
---|
1261 | if (! child->output.syncout)
|
---|
1262 | /* We don't want to sync this command: to avoid misordered
|
---|
1263 | output ensure any already-synced content is written. */
|
---|
1264 | output_dump (&child->output);
|
---|
1265 | #endif
|
---|
1266 |
|
---|
1267 | /* Print the command if appropriate. */
|
---|
1268 | if (just_print_flag || trace_flag
|
---|
1269 | || (!(flags & COMMANDS_SILENT) && !silent_flag))
|
---|
1270 | OS (message, 0, "%s", p);
|
---|
1271 |
|
---|
1272 | /* Tell update_goal_chain that a command has been started on behalf of
|
---|
1273 | this target. It is important that this happens here and not in
|
---|
1274 | reap_children (where we used to do it), because reap_children might be
|
---|
1275 | reaping children from a different target. We want this increment to
|
---|
1276 | guaranteedly indicate that a command was started for the dependency
|
---|
1277 | chain (i.e., update_file recursion chain) we are processing. */
|
---|
1278 |
|
---|
1279 | ++commands_started;
|
---|
1280 |
|
---|
1281 | /* Optimize an empty command. People use this for timestamp rules,
|
---|
1282 | so avoid forking a useless shell. Do this after we increment
|
---|
1283 | commands_started so make still treats this special case as if it
|
---|
1284 | performed some action (makes a difference as to what messages are
|
---|
1285 | printed, etc. */
|
---|
1286 |
|
---|
1287 | #if !defined(VMS) && !defined(_AMIGA)
|
---|
1288 | if (
|
---|
1289 | #if defined __MSDOS__ || defined (__EMX__)
|
---|
1290 | unixy_shell /* the test is complicated and we already did it */
|
---|
1291 | #else
|
---|
1292 | (argv[0] && is_bourne_compatible_shell (argv[0]))
|
---|
1293 | #endif
|
---|
1294 | && (argv[1] && argv[1][0] == '-'
|
---|
1295 | &&
|
---|
1296 | ((argv[1][1] == 'c' && argv[1][2] == '\0')
|
---|
1297 | ||
|
---|
1298 | (argv[1][1] == 'e' && argv[1][2] == 'c' && argv[1][3] == '\0')))
|
---|
1299 | && (argv[2] && argv[2][0] == ':' && argv[2][1] == '\0')
|
---|
1300 | && argv[3] == NULL)
|
---|
1301 | {
|
---|
1302 | free (argv[0]);
|
---|
1303 | free (argv);
|
---|
1304 | goto next_command;
|
---|
1305 | }
|
---|
1306 | #endif /* !VMS && !_AMIGA */
|
---|
1307 |
|
---|
1308 | /* If -n was given, recurse to get the next line in the sequence. */
|
---|
1309 |
|
---|
1310 | if (just_print_flag && !(flags & COMMANDS_RECURSE))
|
---|
1311 | {
|
---|
1312 | #ifndef VMS
|
---|
1313 | free (argv[0]);
|
---|
1314 | free (argv);
|
---|
1315 | #endif
|
---|
1316 | goto next_command;
|
---|
1317 | }
|
---|
1318 |
|
---|
1319 | /* We're sure we're going to invoke a command: set up the output. */
|
---|
1320 | output_start ();
|
---|
1321 |
|
---|
1322 | /* Flush the output streams so they won't have things written twice. */
|
---|
1323 |
|
---|
1324 | fflush (stdout);
|
---|
1325 | fflush (stderr);
|
---|
1326 |
|
---|
1327 | /* Decide whether to give this child the 'good' standard input
|
---|
1328 | (one that points to the terminal or whatever), or the 'bad' one
|
---|
1329 | that points to the read side of a broken pipe. */
|
---|
1330 |
|
---|
1331 | child->good_stdin = !good_stdin_used;
|
---|
1332 | if (child->good_stdin)
|
---|
1333 | good_stdin_used = 1;
|
---|
1334 |
|
---|
1335 | child->deleted = 0;
|
---|
1336 |
|
---|
1337 | #ifndef _AMIGA
|
---|
1338 | /* Set up the environment for the child. */
|
---|
1339 | if (child->environment == 0)
|
---|
1340 | child->environment = target_environment (child->file);
|
---|
1341 | #endif
|
---|
1342 |
|
---|
1343 | #if !defined(__MSDOS__) && !defined(_AMIGA) && !defined(WINDOWS32)
|
---|
1344 |
|
---|
1345 | #ifndef VMS
|
---|
1346 | /* start_waiting_job has set CHILD->remote if we can start a remote job. */
|
---|
1347 | if (child->remote)
|
---|
1348 | {
|
---|
1349 | int is_remote, id, used_stdin;
|
---|
1350 | if (start_remote_job (argv, child->environment,
|
---|
1351 | child->good_stdin ? 0 : get_bad_stdin (),
|
---|
1352 | &is_remote, &id, &used_stdin))
|
---|
1353 | /* Don't give up; remote execution may fail for various reasons. If
|
---|
1354 | so, simply run the job locally. */
|
---|
1355 | goto run_local;
|
---|
1356 | else
|
---|
1357 | {
|
---|
1358 | if (child->good_stdin && !used_stdin)
|
---|
1359 | {
|
---|
1360 | child->good_stdin = 0;
|
---|
1361 | good_stdin_used = 0;
|
---|
1362 | }
|
---|
1363 | child->remote = is_remote;
|
---|
1364 | child->pid = id;
|
---|
1365 | }
|
---|
1366 | }
|
---|
1367 | else
|
---|
1368 | #endif /* !VMS */
|
---|
1369 | {
|
---|
1370 | /* Fork the child process. */
|
---|
1371 |
|
---|
1372 | char **parent_environ;
|
---|
1373 |
|
---|
1374 | run_local:
|
---|
1375 | block_sigs ();
|
---|
1376 |
|
---|
1377 | child->remote = 0;
|
---|
1378 |
|
---|
1379 | #ifdef VMS
|
---|
1380 | if (!child_execute_job (child, argv))
|
---|
1381 | {
|
---|
1382 | /* Fork failed! */
|
---|
1383 | perror_with_name ("fork", "");
|
---|
1384 | goto error;
|
---|
1385 | }
|
---|
1386 |
|
---|
1387 | #else
|
---|
1388 |
|
---|
1389 | parent_environ = environ;
|
---|
1390 |
|
---|
1391 | jobserver_pre_child (flags & COMMANDS_RECURSE);
|
---|
1392 |
|
---|
1393 | child->pid = child_execute_job (&child->output, child->good_stdin, argv, child->environment);
|
---|
1394 |
|
---|
1395 | environ = parent_environ; /* Restore value child may have clobbered. */
|
---|
1396 | jobserver_post_child (flags & COMMANDS_RECURSE);
|
---|
1397 |
|
---|
1398 | if (child->pid < 0)
|
---|
1399 | {
|
---|
1400 | /* Fork failed! */
|
---|
1401 | unblock_sigs ();
|
---|
1402 | perror_with_name ("fork", "");
|
---|
1403 | goto error;
|
---|
1404 | }
|
---|
1405 | #endif /* !VMS */
|
---|
1406 | }
|
---|
1407 |
|
---|
1408 | #else /* __MSDOS__ or Amiga or WINDOWS32 */
|
---|
1409 | #ifdef __MSDOS__
|
---|
1410 | {
|
---|
1411 | int proc_return;
|
---|
1412 |
|
---|
1413 | block_sigs ();
|
---|
1414 | dos_status = 0;
|
---|
1415 |
|
---|
1416 | /* We call 'system' to do the job of the SHELL, since stock DOS
|
---|
1417 | shell is too dumb. Our 'system' knows how to handle long
|
---|
1418 | command lines even if pipes/redirection is needed; it will only
|
---|
1419 | call COMMAND.COM when its internal commands are used. */
|
---|
1420 | if (execute_by_shell)
|
---|
1421 | {
|
---|
1422 | char *cmdline = argv[0];
|
---|
1423 | /* We don't have a way to pass environment to 'system',
|
---|
1424 | so we need to save and restore ours, sigh... */
|
---|
1425 | char **parent_environ = environ;
|
---|
1426 |
|
---|
1427 | environ = child->environment;
|
---|
1428 |
|
---|
1429 | /* If we have a *real* shell, tell 'system' to call
|
---|
1430 | it to do everything for us. */
|
---|
1431 | if (unixy_shell)
|
---|
1432 | {
|
---|
1433 | /* A *real* shell on MSDOS may not support long
|
---|
1434 | command lines the DJGPP way, so we must use 'system'. */
|
---|
1435 | cmdline = argv[2]; /* get past "shell -c" */
|
---|
1436 | }
|
---|
1437 |
|
---|
1438 | dos_command_running = 1;
|
---|
1439 | proc_return = system (cmdline);
|
---|
1440 | environ = parent_environ;
|
---|
1441 | execute_by_shell = 0; /* for the next time */
|
---|
1442 | }
|
---|
1443 | else
|
---|
1444 | {
|
---|
1445 | dos_command_running = 1;
|
---|
1446 | proc_return = spawnvpe (P_WAIT, argv[0], argv, child->environment);
|
---|
1447 | }
|
---|
1448 |
|
---|
1449 | /* Need to unblock signals before turning off
|
---|
1450 | dos_command_running, so that child's signals
|
---|
1451 | will be treated as such (see fatal_error_signal). */
|
---|
1452 | unblock_sigs ();
|
---|
1453 | dos_command_running = 0;
|
---|
1454 |
|
---|
1455 | /* If the child got a signal, dos_status has its
|
---|
1456 | high 8 bits set, so be careful not to alter them. */
|
---|
1457 | if (proc_return == -1)
|
---|
1458 | dos_status |= 0xff;
|
---|
1459 | else
|
---|
1460 | dos_status |= (proc_return & 0xff);
|
---|
1461 | ++dead_children;
|
---|
1462 | child->pid = dos_pid++;
|
---|
1463 | }
|
---|
1464 | #endif /* __MSDOS__ */
|
---|
1465 | #ifdef _AMIGA
|
---|
1466 | amiga_status = MyExecute (argv);
|
---|
1467 |
|
---|
1468 | ++dead_children;
|
---|
1469 | child->pid = amiga_pid++;
|
---|
1470 | if (amiga_batch_file)
|
---|
1471 | {
|
---|
1472 | amiga_batch_file = 0;
|
---|
1473 | DeleteFile (amiga_bname); /* Ignore errors. */
|
---|
1474 | }
|
---|
1475 | #endif /* Amiga */
|
---|
1476 | #ifdef WINDOWS32
|
---|
1477 | {
|
---|
1478 | HANDLE hPID;
|
---|
1479 | char* arg0;
|
---|
1480 | int outfd = FD_STDOUT;
|
---|
1481 | int errfd = FD_STDERR;
|
---|
1482 |
|
---|
1483 | /* make UNC paths safe for CreateProcess -- backslash format */
|
---|
1484 | arg0 = argv[0];
|
---|
1485 | if (arg0 && arg0[0] == '/' && arg0[1] == '/')
|
---|
1486 | for ( ; arg0 && *arg0; arg0++)
|
---|
1487 | if (*arg0 == '/')
|
---|
1488 | *arg0 = '\\';
|
---|
1489 |
|
---|
1490 | /* make sure CreateProcess() has Path it needs */
|
---|
1491 | sync_Path_environment ();
|
---|
1492 |
|
---|
1493 | #ifndef NO_OUTPUT_SYNC
|
---|
1494 | /* Divert child output if output_sync in use. */
|
---|
1495 | if (child->output.syncout)
|
---|
1496 | {
|
---|
1497 | if (child->output.out >= 0)
|
---|
1498 | outfd = child->output.out;
|
---|
1499 | if (child->output.err >= 0)
|
---|
1500 | errfd = child->output.err;
|
---|
1501 | }
|
---|
1502 | #else
|
---|
1503 | outfd = errfd = -1;
|
---|
1504 | #endif
|
---|
1505 | hPID = process_easy (argv, child->environment, outfd, errfd);
|
---|
1506 |
|
---|
1507 | if (hPID != INVALID_HANDLE_VALUE)
|
---|
1508 | child->pid = (pid_t) hPID;
|
---|
1509 | else
|
---|
1510 | {
|
---|
1511 | int i;
|
---|
1512 | unblock_sigs ();
|
---|
1513 | fprintf (stderr,
|
---|
1514 | _("process_easy() failed to launch process (e=%ld)\n"),
|
---|
1515 | process_last_err (hPID));
|
---|
1516 | for (i = 0; argv[i]; i++)
|
---|
1517 | fprintf (stderr, "%s ", argv[i]);
|
---|
1518 | fprintf (stderr, _("\nCounted %d args in failed launch\n"), i);
|
---|
1519 | goto error;
|
---|
1520 | }
|
---|
1521 | }
|
---|
1522 | #endif /* WINDOWS32 */
|
---|
1523 | #endif /* __MSDOS__ or Amiga or WINDOWS32 */
|
---|
1524 |
|
---|
1525 | /* Bump the number of jobs started in this second. */
|
---|
1526 | ++job_counter;
|
---|
1527 |
|
---|
1528 | /* We are the parent side. Set the state to
|
---|
1529 | say the commands are running and return. */
|
---|
1530 |
|
---|
1531 | set_command_state (child->file, cs_running);
|
---|
1532 |
|
---|
1533 | /* Free the storage used by the child's argument list. */
|
---|
1534 | #ifndef VMS
|
---|
1535 | free (argv[0]);
|
---|
1536 | free (argv);
|
---|
1537 | #endif
|
---|
1538 |
|
---|
1539 | OUTPUT_UNSET();
|
---|
1540 | return;
|
---|
1541 |
|
---|
1542 | error:
|
---|
1543 | child->file->update_status = us_failed;
|
---|
1544 | notice_finished_file (child->file);
|
---|
1545 | OUTPUT_UNSET();
|
---|
1546 | }
|
---|
1547 |
|
---|
1548 | /* Try to start a child running.
|
---|
1549 | Returns nonzero if the child was started (and maybe finished), or zero if
|
---|
1550 | the load was too high and the child was put on the 'waiting_jobs' chain. */
|
---|
1551 |
|
---|
1552 | static int
|
---|
1553 | start_waiting_job (struct child *c)
|
---|
1554 | {
|
---|
1555 | struct file *f = c->file;
|
---|
1556 |
|
---|
1557 | /* If we can start a job remotely, we always want to, and don't care about
|
---|
1558 | the local load average. We record that the job should be started
|
---|
1559 | remotely in C->remote for start_job_command to test. */
|
---|
1560 |
|
---|
1561 | c->remote = start_remote_job_p (1);
|
---|
1562 |
|
---|
1563 | /* If we are running at least one job already and the load average
|
---|
1564 | is too high, make this one wait. */
|
---|
1565 | if (!c->remote
|
---|
1566 | && ((job_slots_used > 0 && load_too_high ())
|
---|
1567 | #ifdef WINDOWS32
|
---|
1568 | || (process_used_slots () >= MAXIMUM_WAIT_OBJECTS)
|
---|
1569 | #endif
|
---|
1570 | ))
|
---|
1571 | {
|
---|
1572 | /* Put this child on the chain of children waiting for the load average
|
---|
1573 | to go down. */
|
---|
1574 | set_command_state (f, cs_running);
|
---|
1575 | c->next = waiting_jobs;
|
---|
1576 | waiting_jobs = c;
|
---|
1577 | return 0;
|
---|
1578 | }
|
---|
1579 |
|
---|
1580 | /* Start the first command; reap_children will run later command lines. */
|
---|
1581 | start_job_command (c);
|
---|
1582 |
|
---|
1583 | switch (f->command_state)
|
---|
1584 | {
|
---|
1585 | case cs_running:
|
---|
1586 | c->next = children;
|
---|
1587 | DB (DB_JOBS, (_("Putting child %p (%s) PID %s%s on the chain.\n"),
|
---|
1588 | c, c->file->name, pid2str (c->pid),
|
---|
1589 | c->remote ? _(" (remote)") : ""));
|
---|
1590 | children = c;
|
---|
1591 | /* One more job slot is in use. */
|
---|
1592 | ++job_slots_used;
|
---|
1593 | unblock_sigs ();
|
---|
1594 | break;
|
---|
1595 |
|
---|
1596 | case cs_not_started:
|
---|
1597 | /* All the command lines turned out to be empty. */
|
---|
1598 | f->update_status = us_success;
|
---|
1599 | /* FALLTHROUGH */
|
---|
1600 |
|
---|
1601 | case cs_finished:
|
---|
1602 | notice_finished_file (f);
|
---|
1603 | free_child (c);
|
---|
1604 | break;
|
---|
1605 |
|
---|
1606 | default:
|
---|
1607 | assert (f->command_state == cs_finished);
|
---|
1608 | break;
|
---|
1609 | }
|
---|
1610 |
|
---|
1611 | return 1;
|
---|
1612 | }
|
---|
1613 |
|
---|
1614 | /* Create a 'struct child' for FILE and start its commands running. */
|
---|
1615 |
|
---|
1616 | void
|
---|
1617 | new_job (struct file *file)
|
---|
1618 | {
|
---|
1619 | struct commands *cmds = file->cmds;
|
---|
1620 | struct child *c;
|
---|
1621 | char **lines;
|
---|
1622 | unsigned int i;
|
---|
1623 |
|
---|
1624 | /* Let any previously decided-upon jobs that are waiting
|
---|
1625 | for the load to go down start before this new one. */
|
---|
1626 | start_waiting_jobs ();
|
---|
1627 |
|
---|
1628 | /* Reap any children that might have finished recently. */
|
---|
1629 | reap_children (0, 0);
|
---|
1630 |
|
---|
1631 | /* Chop the commands up into lines if they aren't already. */
|
---|
1632 | chop_commands (cmds);
|
---|
1633 |
|
---|
1634 | /* Start the command sequence, record it in a new
|
---|
1635 | 'struct child', and add that to the chain. */
|
---|
1636 |
|
---|
1637 | c = xcalloc (sizeof (struct child));
|
---|
1638 | output_init (&c->output);
|
---|
1639 |
|
---|
1640 | c->file = file;
|
---|
1641 | c->sh_batch_file = NULL;
|
---|
1642 |
|
---|
1643 | /* Cache dontcare flag because file->dontcare can be changed once we
|
---|
1644 | return. Check dontcare inheritance mechanism for details. */
|
---|
1645 | c->dontcare = file->dontcare;
|
---|
1646 |
|
---|
1647 | /* Start saving output in case the expansion uses $(info ...) etc. */
|
---|
1648 | OUTPUT_SET (&c->output);
|
---|
1649 |
|
---|
1650 | /* Expand the command lines and store the results in LINES. */
|
---|
1651 | lines = xmalloc (cmds->ncommand_lines * sizeof (char *));
|
---|
1652 | for (i = 0; i < cmds->ncommand_lines; ++i)
|
---|
1653 | {
|
---|
1654 | /* Collapse backslash-newline combinations that are inside variable
|
---|
1655 | or function references. These are left alone by the parser so
|
---|
1656 | that they will appear in the echoing of commands (where they look
|
---|
1657 | nice); and collapsed by construct_command_argv when it tokenizes.
|
---|
1658 | But letting them survive inside function invocations loses because
|
---|
1659 | we don't want the functions to see them as part of the text. */
|
---|
1660 |
|
---|
1661 | char *in, *out, *ref;
|
---|
1662 |
|
---|
1663 | /* IN points to where in the line we are scanning.
|
---|
1664 | OUT points to where in the line we are writing.
|
---|
1665 | When we collapse a backslash-newline combination,
|
---|
1666 | IN gets ahead of OUT. */
|
---|
1667 |
|
---|
1668 | in = out = cmds->command_lines[i];
|
---|
1669 | while ((ref = strchr (in, '$')) != 0)
|
---|
1670 | {
|
---|
1671 | ++ref; /* Move past the $. */
|
---|
1672 |
|
---|
1673 | if (out != in)
|
---|
1674 | /* Copy the text between the end of the last chunk
|
---|
1675 | we processed (where IN points) and the new chunk
|
---|
1676 | we are about to process (where REF points). */
|
---|
1677 | memmove (out, in, ref - in);
|
---|
1678 |
|
---|
1679 | /* Move both pointers past the boring stuff. */
|
---|
1680 | out += ref - in;
|
---|
1681 | in = ref;
|
---|
1682 |
|
---|
1683 | if (*ref == '(' || *ref == '{')
|
---|
1684 | {
|
---|
1685 | char openparen = *ref;
|
---|
1686 | char closeparen = openparen == '(' ? ')' : '}';
|
---|
1687 | char *outref;
|
---|
1688 | int count;
|
---|
1689 | char *p;
|
---|
1690 |
|
---|
1691 | *out++ = *in++; /* Copy OPENPAREN. */
|
---|
1692 | outref = out;
|
---|
1693 | /* IN now points past the opening paren or brace.
|
---|
1694 | Count parens or braces until it is matched. */
|
---|
1695 | count = 0;
|
---|
1696 | while (*in != '\0')
|
---|
1697 | {
|
---|
1698 | if (*in == closeparen && --count < 0)
|
---|
1699 | break;
|
---|
1700 | else if (*in == '\\' && in[1] == '\n')
|
---|
1701 | {
|
---|
1702 | /* We have found a backslash-newline inside a
|
---|
1703 | variable or function reference. Eat it and
|
---|
1704 | any following whitespace. */
|
---|
1705 |
|
---|
1706 | int quoted = 0;
|
---|
1707 | for (p = in - 1; p > ref && *p == '\\'; --p)
|
---|
1708 | quoted = !quoted;
|
---|
1709 |
|
---|
1710 | if (quoted)
|
---|
1711 | /* There were two or more backslashes, so this is
|
---|
1712 | not really a continuation line. We don't collapse
|
---|
1713 | the quoting backslashes here as is done in
|
---|
1714 | collapse_continuations, because the line will
|
---|
1715 | be collapsed again after expansion. */
|
---|
1716 | *out++ = *in++;
|
---|
1717 | else
|
---|
1718 | {
|
---|
1719 | /* Skip the backslash, newline, and whitespace. */
|
---|
1720 | in += 2;
|
---|
1721 | NEXT_TOKEN (in);
|
---|
1722 |
|
---|
1723 | /* Discard any preceding whitespace that has
|
---|
1724 | already been written to the output. */
|
---|
1725 | while (out > outref && ISBLANK (out[-1]))
|
---|
1726 | --out;
|
---|
1727 |
|
---|
1728 | /* Replace it all with a single space. */
|
---|
1729 | *out++ = ' ';
|
---|
1730 | }
|
---|
1731 | }
|
---|
1732 | else
|
---|
1733 | {
|
---|
1734 | if (*in == openparen)
|
---|
1735 | ++count;
|
---|
1736 |
|
---|
1737 | *out++ = *in++;
|
---|
1738 | }
|
---|
1739 | }
|
---|
1740 | }
|
---|
1741 | }
|
---|
1742 |
|
---|
1743 | /* There are no more references in this line to worry about.
|
---|
1744 | Copy the remaining uninteresting text to the output. */
|
---|
1745 | if (out != in)
|
---|
1746 | memmove (out, in, strlen (in) + 1);
|
---|
1747 |
|
---|
1748 | /* Finally, expand the line. */
|
---|
1749 | cmds->fileinfo.offset = i;
|
---|
1750 | lines[i] = allocated_variable_expand_for_file (cmds->command_lines[i],
|
---|
1751 | file);
|
---|
1752 | }
|
---|
1753 |
|
---|
1754 | cmds->fileinfo.offset = 0;
|
---|
1755 | c->command_lines = lines;
|
---|
1756 |
|
---|
1757 | /* Fetch the first command line to be run. */
|
---|
1758 | job_next_command (c);
|
---|
1759 |
|
---|
1760 | /* Wait for a job slot to be freed up. If we allow an infinite number
|
---|
1761 | don't bother; also job_slots will == 0 if we're using the jobserver. */
|
---|
1762 |
|
---|
1763 | if (job_slots != 0)
|
---|
1764 | while (job_slots_used == job_slots)
|
---|
1765 | reap_children (1, 0);
|
---|
1766 |
|
---|
1767 | #ifdef MAKE_JOBSERVER
|
---|
1768 | /* If we are controlling multiple jobs make sure we have a token before
|
---|
1769 | starting the child. */
|
---|
1770 |
|
---|
1771 | /* This can be inefficient. There's a decent chance that this job won't
|
---|
1772 | actually have to run any subprocesses: the command script may be empty
|
---|
1773 | or otherwise optimized away. It would be nice if we could defer
|
---|
1774 | obtaining a token until just before we need it, in start_job_command.
|
---|
1775 | To do that we'd need to keep track of whether we'd already obtained a
|
---|
1776 | token (since start_job_command is called for each line of the job, not
|
---|
1777 | just once). Also more thought needs to go into the entire algorithm;
|
---|
1778 | this is where the old parallel job code waits, so... */
|
---|
1779 |
|
---|
1780 | else if (jobserver_enabled ())
|
---|
1781 | while (1)
|
---|
1782 | {
|
---|
1783 | int got_token;
|
---|
1784 |
|
---|
1785 | DB (DB_JOBS, ("Need a job token; we %shave children\n",
|
---|
1786 | children ? "" : "don't "));
|
---|
1787 |
|
---|
1788 | /* If we don't already have a job started, use our "free" token. */
|
---|
1789 | if (!jobserver_tokens)
|
---|
1790 | break;
|
---|
1791 |
|
---|
1792 | /* Prepare for jobserver token acquisition. */
|
---|
1793 | jobserver_pre_acquire ();
|
---|
1794 |
|
---|
1795 | /* Reap anything that's currently waiting. */
|
---|
1796 | reap_children (0, 0);
|
---|
1797 |
|
---|
1798 | /* Kick off any jobs we have waiting for an opportunity that
|
---|
1799 | can run now (i.e., waiting for load). */
|
---|
1800 | start_waiting_jobs ();
|
---|
1801 |
|
---|
1802 | /* If our "free" slot is available, use it; we don't need a token. */
|
---|
1803 | if (!jobserver_tokens)
|
---|
1804 | break;
|
---|
1805 |
|
---|
1806 | /* There must be at least one child already, or we have no business
|
---|
1807 | waiting for a token. */
|
---|
1808 | if (!children)
|
---|
1809 | O (fatal, NILF, "INTERNAL: no children as we go to sleep on read\n");
|
---|
1810 |
|
---|
1811 | /* Get a token. */
|
---|
1812 | got_token = jobserver_acquire (waiting_jobs != NULL);
|
---|
1813 |
|
---|
1814 | /* If we got one, we're done here. */
|
---|
1815 | if (got_token == 1)
|
---|
1816 | {
|
---|
1817 | DB (DB_JOBS, (_("Obtained token for child %p (%s).\n"),
|
---|
1818 | c, c->file->name));
|
---|
1819 | break;
|
---|
1820 | }
|
---|
1821 | }
|
---|
1822 | #endif
|
---|
1823 |
|
---|
1824 | ++jobserver_tokens;
|
---|
1825 |
|
---|
1826 | /* Trace the build.
|
---|
1827 | Use message here so that changes to working directories are logged. */
|
---|
1828 | if (trace_flag)
|
---|
1829 | {
|
---|
1830 | char *newer = allocated_variable_expand_for_file ("$?", c->file);
|
---|
1831 | const char *nm;
|
---|
1832 |
|
---|
1833 | if (! cmds->fileinfo.filenm)
|
---|
1834 | nm = _("<builtin>");
|
---|
1835 | else
|
---|
1836 | {
|
---|
1837 | char *n = alloca (strlen (cmds->fileinfo.filenm) + 1 + 11 + 1);
|
---|
1838 | sprintf (n, "%s:%lu", cmds->fileinfo.filenm, cmds->fileinfo.lineno);
|
---|
1839 | nm = n;
|
---|
1840 | }
|
---|
1841 |
|
---|
1842 | if (newer[0] == '\0')
|
---|
1843 | OSS (message, 0,
|
---|
1844 | _("%s: target '%s' does not exist"), nm, c->file->name);
|
---|
1845 | else
|
---|
1846 | OSSS (message, 0,
|
---|
1847 | _("%s: update target '%s' due to: %s"), nm, c->file->name, newer);
|
---|
1848 |
|
---|
1849 | free (newer);
|
---|
1850 | }
|
---|
1851 |
|
---|
1852 | /* The job is now primed. Start it running.
|
---|
1853 | (This will notice if there is in fact no recipe.) */
|
---|
1854 | start_waiting_job (c);
|
---|
1855 |
|
---|
1856 | if (job_slots == 1 || not_parallel)
|
---|
1857 | /* Since there is only one job slot, make things run linearly.
|
---|
1858 | Wait for the child to die, setting the state to 'cs_finished'. */
|
---|
1859 | while (file->command_state == cs_running)
|
---|
1860 | reap_children (1, 0);
|
---|
1861 |
|
---|
1862 | OUTPUT_UNSET ();
|
---|
1863 | return;
|
---|
1864 | }
|
---|
1865 | |
---|
1866 |
|
---|
1867 | /* Move CHILD's pointers to the next command for it to execute.
|
---|
1868 | Returns nonzero if there is another command. */
|
---|
1869 |
|
---|
1870 | static int
|
---|
1871 | job_next_command (struct child *child)
|
---|
1872 | {
|
---|
1873 | while (child->command_ptr == 0 || *child->command_ptr == '\0')
|
---|
1874 | {
|
---|
1875 | /* There are no more lines in the expansion of this line. */
|
---|
1876 | if (child->command_line == child->file->cmds->ncommand_lines)
|
---|
1877 | {
|
---|
1878 | /* There are no more lines to be expanded. */
|
---|
1879 | child->command_ptr = 0;
|
---|
1880 | child->file->cmds->fileinfo.offset = 0;
|
---|
1881 | return 0;
|
---|
1882 | }
|
---|
1883 | else
|
---|
1884 | /* Get the next line to run. */
|
---|
1885 | child->command_ptr = child->command_lines[child->command_line++];
|
---|
1886 | }
|
---|
1887 |
|
---|
1888 | child->file->cmds->fileinfo.offset = child->command_line - 1;
|
---|
1889 | return 1;
|
---|
1890 | }
|
---|
1891 |
|
---|
1892 | /* Determine if the load average on the system is too high to start a new job.
|
---|
1893 | The real system load average is only recomputed once a second. However, a
|
---|
1894 | very parallel make can easily start tens or even hundreds of jobs in a
|
---|
1895 | second, which brings the system to its knees for a while until that first
|
---|
1896 | batch of jobs clears out.
|
---|
1897 |
|
---|
1898 | To avoid this we use a weighted algorithm to try to account for jobs which
|
---|
1899 | have been started since the last second, and guess what the load average
|
---|
1900 | would be now if it were computed.
|
---|
1901 |
|
---|
1902 | This algorithm was provided by Thomas Riedl <[email protected]>,
|
---|
1903 | who writes:
|
---|
1904 |
|
---|
1905 | ! calculate something load-oid and add to the observed sys.load,
|
---|
1906 | ! so that latter can catch up:
|
---|
1907 | ! - every job started increases jobctr;
|
---|
1908 | ! - every dying job decreases a positive jobctr;
|
---|
1909 | ! - the jobctr value gets zeroed every change of seconds,
|
---|
1910 | ! after its value*weight_b is stored into the 'backlog' value last_sec
|
---|
1911 | ! - weight_a times the sum of jobctr and last_sec gets
|
---|
1912 | ! added to the observed sys.load.
|
---|
1913 | !
|
---|
1914 | ! The two weights have been tried out on 24 and 48 proc. Sun Solaris-9
|
---|
1915 | ! machines, using a several-thousand-jobs-mix of cpp, cc, cxx and smallish
|
---|
1916 | ! sub-shelled commands (rm, echo, sed...) for tests.
|
---|
1917 | ! lowering the 'direct influence' factor weight_a (e.g. to 0.1)
|
---|
1918 | ! resulted in significant excession of the load limit, raising it
|
---|
1919 | ! (e.g. to 0.5) took bad to small, fast-executing jobs and didn't
|
---|
1920 | ! reach the limit in most test cases.
|
---|
1921 | !
|
---|
1922 | ! lowering the 'history influence' weight_b (e.g. to 0.1) resulted in
|
---|
1923 | ! exceeding the limit for longer-running stuff (compile jobs in
|
---|
1924 | ! the .5 to 1.5 sec. range),raising it (e.g. to 0.5) overrepresented
|
---|
1925 | ! small jobs' effects.
|
---|
1926 |
|
---|
1927 | */
|
---|
1928 |
|
---|
1929 | #define LOAD_WEIGHT_A 0.25
|
---|
1930 | #define LOAD_WEIGHT_B 0.25
|
---|
1931 |
|
---|
1932 | static int
|
---|
1933 | load_too_high (void)
|
---|
1934 | {
|
---|
1935 | #if defined(__MSDOS__) || defined(VMS) || defined(_AMIGA) || defined(__riscos__)
|
---|
1936 | return 1;
|
---|
1937 | #else
|
---|
1938 | static double last_sec;
|
---|
1939 | static time_t last_now;
|
---|
1940 | double load, guess;
|
---|
1941 | time_t now;
|
---|
1942 |
|
---|
1943 | #ifdef WINDOWS32
|
---|
1944 | /* sub_proc.c cannot wait for more than MAXIMUM_WAIT_OBJECTS children */
|
---|
1945 | if (process_used_slots () >= MAXIMUM_WAIT_OBJECTS)
|
---|
1946 | return 1;
|
---|
1947 | #endif
|
---|
1948 |
|
---|
1949 | if (max_load_average < 0)
|
---|
1950 | return 0;
|
---|
1951 |
|
---|
1952 | /* Find the real system load average. */
|
---|
1953 | make_access ();
|
---|
1954 | if (getloadavg (&load, 1) != 1)
|
---|
1955 | {
|
---|
1956 | static int lossage = -1;
|
---|
1957 | /* Complain only once for the same error. */
|
---|
1958 | if (lossage == -1 || errno != lossage)
|
---|
1959 | {
|
---|
1960 | if (errno == 0)
|
---|
1961 | /* An errno value of zero means getloadavg is just unsupported. */
|
---|
1962 | O (error, NILF,
|
---|
1963 | _("cannot enforce load limits on this operating system"));
|
---|
1964 | else
|
---|
1965 | perror_with_name (_("cannot enforce load limit: "), "getloadavg");
|
---|
1966 | }
|
---|
1967 | lossage = errno;
|
---|
1968 | load = 0;
|
---|
1969 | }
|
---|
1970 | user_access ();
|
---|
1971 |
|
---|
1972 | /* If we're in a new second zero the counter and correct the backlog
|
---|
1973 | value. Only keep the backlog for one extra second; after that it's 0. */
|
---|
1974 | now = time (NULL);
|
---|
1975 | if (last_now < now)
|
---|
1976 | {
|
---|
1977 | if (last_now == now - 1)
|
---|
1978 | last_sec = LOAD_WEIGHT_B * job_counter;
|
---|
1979 | else
|
---|
1980 | last_sec = 0.0;
|
---|
1981 |
|
---|
1982 | job_counter = 0;
|
---|
1983 | last_now = now;
|
---|
1984 | }
|
---|
1985 |
|
---|
1986 | /* Try to guess what the load would be right now. */
|
---|
1987 | guess = load + (LOAD_WEIGHT_A * (job_counter + last_sec));
|
---|
1988 |
|
---|
1989 | DB (DB_JOBS, ("Estimated system load = %f (actual = %f) (max requested = %f)\n",
|
---|
1990 | guess, load, max_load_average));
|
---|
1991 |
|
---|
1992 | return guess >= max_load_average;
|
---|
1993 | #endif
|
---|
1994 | }
|
---|
1995 |
|
---|
1996 | /* Start jobs that are waiting for the load to be lower. */
|
---|
1997 |
|
---|
1998 | void
|
---|
1999 | start_waiting_jobs (void)
|
---|
2000 | {
|
---|
2001 | struct child *job;
|
---|
2002 |
|
---|
2003 | if (waiting_jobs == 0)
|
---|
2004 | return;
|
---|
2005 |
|
---|
2006 | do
|
---|
2007 | {
|
---|
2008 | /* Check for recently deceased descendants. */
|
---|
2009 | reap_children (0, 0);
|
---|
2010 |
|
---|
2011 | /* Take a job off the waiting list. */
|
---|
2012 | job = waiting_jobs;
|
---|
2013 | waiting_jobs = job->next;
|
---|
2014 |
|
---|
2015 | /* Try to start that job. We break out of the loop as soon
|
---|
2016 | as start_waiting_job puts one back on the waiting list. */
|
---|
2017 | }
|
---|
2018 | while (start_waiting_job (job) && waiting_jobs != 0);
|
---|
2019 |
|
---|
2020 | return;
|
---|
2021 | }
|
---|
2022 | |
---|
2023 |
|
---|
2024 | #ifndef WINDOWS32
|
---|
2025 |
|
---|
2026 | /* EMX: Start a child process. This function returns the new pid. */
|
---|
2027 | # if defined __EMX__
|
---|
2028 | int
|
---|
2029 | child_execute_job (struct output *out, int good_stdin, char **argv, char **envp)
|
---|
2030 | {
|
---|
2031 | int pid;
|
---|
2032 | int fdin = good_stdin ? FD_STDIN : get_bad_stdin ();
|
---|
2033 | int fdout = FD_STDOUT;
|
---|
2034 | int fderr = FD_STDERR;
|
---|
2035 | int save_fdin = -1;
|
---|
2036 | int save_fdout = -1;
|
---|
2037 | int save_fderr = -1;
|
---|
2038 |
|
---|
2039 | /* Divert child output if we want to capture output. */
|
---|
2040 | if (out && out->syncout)
|
---|
2041 | {
|
---|
2042 | if (out->out >= 0)
|
---|
2043 | fdout = out->out;
|
---|
2044 | if (out->err >= 0)
|
---|
2045 | fderr = out->err;
|
---|
2046 | }
|
---|
2047 |
|
---|
2048 | /* For each FD which needs to be redirected first make a dup of the standard
|
---|
2049 | FD to save and mark it close on exec so our child won't see it. Then
|
---|
2050 | dup2() the standard FD to the redirect FD, and also mark the redirect FD
|
---|
2051 | as close on exec. */
|
---|
2052 | if (fdin != FD_STDIN)
|
---|
2053 | {
|
---|
2054 | save_fdin = dup (FD_STDIN);
|
---|
2055 | if (save_fdin < 0)
|
---|
2056 | O (fatal, NILF, _("no more file handles: could not duplicate stdin\n"));
|
---|
2057 | CLOSE_ON_EXEC (save_fdin);
|
---|
2058 |
|
---|
2059 | dup2 (fdin, FD_STDIN);
|
---|
2060 | CLOSE_ON_EXEC (fdin);
|
---|
2061 | }
|
---|
2062 |
|
---|
2063 | if (fdout != FD_STDOUT)
|
---|
2064 | {
|
---|
2065 | save_fdout = dup (FD_STDOUT);
|
---|
2066 | if (save_fdout < 0)
|
---|
2067 | O (fatal, NILF,
|
---|
2068 | _("no more file handles: could not duplicate stdout\n"));
|
---|
2069 | CLOSE_ON_EXEC (save_fdout);
|
---|
2070 |
|
---|
2071 | dup2 (fdout, FD_STDOUT);
|
---|
2072 | CLOSE_ON_EXEC (fdout);
|
---|
2073 | }
|
---|
2074 |
|
---|
2075 | if (fderr != FD_STDERR)
|
---|
2076 | {
|
---|
2077 | if (fderr != fdout)
|
---|
2078 | {
|
---|
2079 | save_fderr = dup (FD_STDERR);
|
---|
2080 | if (save_fderr < 0)
|
---|
2081 | O (fatal, NILF,
|
---|
2082 | _("no more file handles: could not duplicate stderr\n"));
|
---|
2083 | CLOSE_ON_EXEC (save_fderr);
|
---|
2084 | }
|
---|
2085 |
|
---|
2086 | dup2 (fderr, FD_STDERR);
|
---|
2087 | CLOSE_ON_EXEC (fderr);
|
---|
2088 | }
|
---|
2089 |
|
---|
2090 | /* Run the command. */
|
---|
2091 | pid = exec_command (argv, envp);
|
---|
2092 |
|
---|
2093 | /* Restore stdout/stdin/stderr of the parent and close temporary FDs. */
|
---|
2094 | if (save_fdin >= 0)
|
---|
2095 | {
|
---|
2096 | if (dup2 (save_fdin, FD_STDIN) != FD_STDIN)
|
---|
2097 | O (fatal, NILF, _("Could not restore stdin\n"));
|
---|
2098 | else
|
---|
2099 | close (save_fdin);
|
---|
2100 | }
|
---|
2101 |
|
---|
2102 | if (save_fdout >= 0)
|
---|
2103 | {
|
---|
2104 | if (dup2 (save_fdout, FD_STDOUT) != FD_STDOUT)
|
---|
2105 | O (fatal, NILF, _("Could not restore stdout\n"));
|
---|
2106 | else
|
---|
2107 | close (save_fdout);
|
---|
2108 | }
|
---|
2109 |
|
---|
2110 | if (save_fderr >= 0)
|
---|
2111 | {
|
---|
2112 | if (dup2 (save_fderr, FD_STDERR) != FD_STDERR)
|
---|
2113 | O (fatal, NILF, _("Could not restore stderr\n"));
|
---|
2114 | else
|
---|
2115 | close (save_fderr);
|
---|
2116 | }
|
---|
2117 |
|
---|
2118 | return pid;
|
---|
2119 | }
|
---|
2120 |
|
---|
2121 | #elif !defined (_AMIGA) && !defined (__MSDOS__) && !defined (VMS)
|
---|
2122 |
|
---|
2123 | /* POSIX:
|
---|
2124 | Create a child process executing the command in ARGV.
|
---|
2125 | ENVP is the environment of the new program. Returns the PID or -1. */
|
---|
2126 | int
|
---|
2127 | child_execute_job (struct output *out, int good_stdin, char **argv, char **envp)
|
---|
2128 | {
|
---|
2129 | int r;
|
---|
2130 | int pid;
|
---|
2131 | int fdin = good_stdin ? FD_STDIN : get_bad_stdin ();
|
---|
2132 | int fdout = FD_STDOUT;
|
---|
2133 | int fderr = FD_STDERR;
|
---|
2134 |
|
---|
2135 | /* Divert child output if we want to capture it. */
|
---|
2136 | if (out && out->syncout)
|
---|
2137 | {
|
---|
2138 | if (out->out >= 0)
|
---|
2139 | fdout = out->out;
|
---|
2140 | if (out->err >= 0)
|
---|
2141 | fderr = out->err;
|
---|
2142 | }
|
---|
2143 |
|
---|
2144 | pid = vfork();
|
---|
2145 | if (pid != 0)
|
---|
2146 | return pid;
|
---|
2147 |
|
---|
2148 | /* We are the child. */
|
---|
2149 | unblock_sigs ();
|
---|
2150 |
|
---|
2151 | #ifdef SET_STACK_SIZE
|
---|
2152 | /* Reset limits, if necessary. */
|
---|
2153 | if (stack_limit.rlim_cur)
|
---|
2154 | setrlimit (RLIMIT_STACK, &stack_limit);
|
---|
2155 | #endif
|
---|
2156 |
|
---|
2157 | /* For any redirected FD, dup2() it to the standard FD.
|
---|
2158 | They are all marked close-on-exec already. */
|
---|
2159 | if (fdin != FD_STDIN)
|
---|
2160 | EINTRLOOP (r, dup2 (fdin, FD_STDIN));
|
---|
2161 | if (fdout != FD_STDOUT)
|
---|
2162 | EINTRLOOP (r, dup2 (fdout, FD_STDOUT));
|
---|
2163 | if (fderr != FD_STDERR)
|
---|
2164 | EINTRLOOP (r, dup2 (fderr, FD_STDERR));
|
---|
2165 |
|
---|
2166 | /* Run the command. */
|
---|
2167 | exec_command (argv, envp);
|
---|
2168 | }
|
---|
2169 | #endif /* !AMIGA && !__MSDOS__ && !VMS */
|
---|
2170 | #endif /* !WINDOWS32 */
|
---|
2171 | |
---|
2172 |
|
---|
2173 | #ifndef _AMIGA
|
---|
2174 | /* Replace the current process with one running the command in ARGV,
|
---|
2175 | with environment ENVP. This function does not return. */
|
---|
2176 |
|
---|
2177 | /* EMX: This function returns the pid of the child process. */
|
---|
2178 | # ifdef __EMX__
|
---|
2179 | int
|
---|
2180 | # else
|
---|
2181 | void
|
---|
2182 | # endif
|
---|
2183 | exec_command (char **argv, char **envp)
|
---|
2184 | {
|
---|
2185 | #ifdef VMS
|
---|
2186 | /* to work around a problem with signals and execve: ignore them */
|
---|
2187 | #ifdef SIGCHLD
|
---|
2188 | signal (SIGCHLD,SIG_IGN);
|
---|
2189 | #endif
|
---|
2190 | /* Run the program. */
|
---|
2191 | execve (argv[0], argv, envp);
|
---|
2192 | perror_with_name ("execve: ", argv[0]);
|
---|
2193 | _exit (EXIT_FAILURE);
|
---|
2194 | #else
|
---|
2195 | #ifdef WINDOWS32
|
---|
2196 | HANDLE hPID;
|
---|
2197 | HANDLE hWaitPID;
|
---|
2198 | int exit_code = EXIT_FAILURE;
|
---|
2199 |
|
---|
2200 | /* make sure CreateProcess() has Path it needs */
|
---|
2201 | sync_Path_environment ();
|
---|
2202 |
|
---|
2203 | /* launch command */
|
---|
2204 | hPID = process_easy (argv, envp, -1, -1);
|
---|
2205 |
|
---|
2206 | /* make sure launch ok */
|
---|
2207 | if (hPID == INVALID_HANDLE_VALUE)
|
---|
2208 | {
|
---|
2209 | int i;
|
---|
2210 | fprintf (stderr, _("process_easy() failed to launch process (e=%ld)\n"),
|
---|
2211 | process_last_err (hPID));
|
---|
2212 | for (i = 0; argv[i]; i++)
|
---|
2213 | fprintf (stderr, "%s ", argv[i]);
|
---|
2214 | fprintf (stderr, _("\nCounted %d args in failed launch\n"), i);
|
---|
2215 | exit (EXIT_FAILURE);
|
---|
2216 | }
|
---|
2217 |
|
---|
2218 | /* wait and reap last child */
|
---|
2219 | hWaitPID = process_wait_for_any (1, 0);
|
---|
2220 | while (hWaitPID)
|
---|
2221 | {
|
---|
2222 | /* was an error found on this process? */
|
---|
2223 | int err = process_last_err (hWaitPID);
|
---|
2224 |
|
---|
2225 | /* get exit data */
|
---|
2226 | exit_code = process_exit_code (hWaitPID);
|
---|
2227 |
|
---|
2228 | if (err)
|
---|
2229 | fprintf (stderr, "make (e=%d, rc=%d): %s",
|
---|
2230 | err, exit_code, map_windows32_error_to_string (err));
|
---|
2231 |
|
---|
2232 | /* cleanup process */
|
---|
2233 | process_cleanup (hWaitPID);
|
---|
2234 |
|
---|
2235 | /* expect to find only last pid, warn about other pids reaped */
|
---|
2236 | if (hWaitPID == hPID)
|
---|
2237 | break;
|
---|
2238 | else
|
---|
2239 | {
|
---|
2240 | char *pidstr = xstrdup (pid2str ((pid_t)hWaitPID));
|
---|
2241 |
|
---|
2242 | fprintf (stderr,
|
---|
2243 | _("make reaped child pid %s, still waiting for pid %s\n"),
|
---|
2244 | pidstr, pid2str ((pid_t)hPID));
|
---|
2245 | free (pidstr);
|
---|
2246 | }
|
---|
2247 | }
|
---|
2248 |
|
---|
2249 | /* return child's exit code as our exit code */
|
---|
2250 | exit (exit_code);
|
---|
2251 |
|
---|
2252 | #else /* !WINDOWS32 */
|
---|
2253 |
|
---|
2254 | # ifdef __EMX__
|
---|
2255 | int pid;
|
---|
2256 | # endif
|
---|
2257 |
|
---|
2258 | /* Be the user, permanently. */
|
---|
2259 | child_access ();
|
---|
2260 |
|
---|
2261 | # ifdef __EMX__
|
---|
2262 | /* Run the program. */
|
---|
2263 | pid = spawnvpe (P_NOWAIT, argv[0], argv, envp);
|
---|
2264 | if (pid >= 0)
|
---|
2265 | return pid;
|
---|
2266 |
|
---|
2267 | /* the file might have a strange shell extension */
|
---|
2268 | if (errno == ENOENT)
|
---|
2269 | errno = ENOEXEC;
|
---|
2270 |
|
---|
2271 | # else
|
---|
2272 | /* Run the program. */
|
---|
2273 | environ = envp;
|
---|
2274 | execvp (argv[0], argv);
|
---|
2275 |
|
---|
2276 | # endif /* !__EMX__ */
|
---|
2277 |
|
---|
2278 | switch (errno)
|
---|
2279 | {
|
---|
2280 | case ENOENT:
|
---|
2281 | /* We are in the child: don't use the output buffer.
|
---|
2282 | It's not right to run fprintf() here! */
|
---|
2283 | if (makelevel == 0)
|
---|
2284 | fprintf (stderr, _("%s: %s: Command not found\n"), program, argv[0]);
|
---|
2285 | else
|
---|
2286 | fprintf (stderr, _("%s[%u]: %s: Command not found\n"),
|
---|
2287 | program, makelevel, argv[0]);
|
---|
2288 | break;
|
---|
2289 | case ENOEXEC:
|
---|
2290 | {
|
---|
2291 | /* The file is not executable. Try it as a shell script. */
|
---|
2292 | const char *shell;
|
---|
2293 | char **new_argv;
|
---|
2294 | int argc;
|
---|
2295 | int i=1;
|
---|
2296 |
|
---|
2297 | # ifdef __EMX__
|
---|
2298 | /* Do not use $SHELL from the environment */
|
---|
2299 | struct variable *p = lookup_variable ("SHELL", 5);
|
---|
2300 | if (p)
|
---|
2301 | shell = p->value;
|
---|
2302 | else
|
---|
2303 | shell = 0;
|
---|
2304 | # else
|
---|
2305 | shell = getenv ("SHELL");
|
---|
2306 | # endif
|
---|
2307 | if (shell == 0)
|
---|
2308 | shell = default_shell;
|
---|
2309 |
|
---|
2310 | argc = 1;
|
---|
2311 | while (argv[argc] != 0)
|
---|
2312 | ++argc;
|
---|
2313 |
|
---|
2314 | # ifdef __EMX__
|
---|
2315 | if (!unixy_shell)
|
---|
2316 | ++argc;
|
---|
2317 | # endif
|
---|
2318 |
|
---|
2319 | new_argv = alloca ((1 + argc + 1) * sizeof (char *));
|
---|
2320 | new_argv[0] = (char *)shell;
|
---|
2321 |
|
---|
2322 | # ifdef __EMX__
|
---|
2323 | if (!unixy_shell)
|
---|
2324 | {
|
---|
2325 | new_argv[1] = "/c";
|
---|
2326 | ++i;
|
---|
2327 | --argc;
|
---|
2328 | }
|
---|
2329 | # endif
|
---|
2330 |
|
---|
2331 | new_argv[i] = argv[0];
|
---|
2332 | while (argc > 0)
|
---|
2333 | {
|
---|
2334 | new_argv[i + argc] = argv[argc];
|
---|
2335 | --argc;
|
---|
2336 | }
|
---|
2337 |
|
---|
2338 | # ifdef __EMX__
|
---|
2339 | pid = spawnvpe (P_NOWAIT, shell, new_argv, envp);
|
---|
2340 | if (pid >= 0)
|
---|
2341 | break;
|
---|
2342 | # else
|
---|
2343 | execvp (shell, new_argv);
|
---|
2344 | # endif
|
---|
2345 | if (errno == ENOENT)
|
---|
2346 | OS (error, NILF, _("%s: Shell program not found"), shell);
|
---|
2347 | else
|
---|
2348 | perror_with_name ("execvp: ", shell);
|
---|
2349 | break;
|
---|
2350 | }
|
---|
2351 |
|
---|
2352 | # ifdef __EMX__
|
---|
2353 | case EINVAL:
|
---|
2354 | /* this nasty error was driving me nuts :-( */
|
---|
2355 | O (error, NILF, _("spawnvpe: environment space might be exhausted"));
|
---|
2356 | /* FALLTHROUGH */
|
---|
2357 | # endif
|
---|
2358 |
|
---|
2359 | default:
|
---|
2360 | perror_with_name ("execvp: ", argv[0]);
|
---|
2361 | break;
|
---|
2362 | }
|
---|
2363 |
|
---|
2364 | # ifdef __EMX__
|
---|
2365 | return pid;
|
---|
2366 | # else
|
---|
2367 | _exit (127);
|
---|
2368 | # endif
|
---|
2369 | #endif /* !WINDOWS32 */
|
---|
2370 | #endif /* !VMS */
|
---|
2371 | }
|
---|
2372 | #else /* On Amiga */
|
---|
2373 | void
|
---|
2374 | exec_command (char **argv)
|
---|
2375 | {
|
---|
2376 | MyExecute (argv);
|
---|
2377 | }
|
---|
2378 |
|
---|
2379 | void clean_tmp (void)
|
---|
2380 | {
|
---|
2381 | DeleteFile (amiga_bname);
|
---|
2382 | }
|
---|
2383 |
|
---|
2384 | #endif /* On Amiga */
|
---|
2385 | |
---|
2386 |
|
---|
2387 | #ifndef VMS
|
---|
2388 | /* Figure out the argument list necessary to run LINE as a command. Try to
|
---|
2389 | avoid using a shell. This routine handles only ' quoting, and " quoting
|
---|
2390 | when no backslash, $ or ' characters are seen in the quotes. Starting
|
---|
2391 | quotes may be escaped with a backslash. If any of the characters in
|
---|
2392 | sh_chars is seen, or any of the builtin commands listed in sh_cmds
|
---|
2393 | is the first word of a line, the shell is used.
|
---|
2394 |
|
---|
2395 | If RESTP is not NULL, *RESTP is set to point to the first newline in LINE.
|
---|
2396 | If *RESTP is NULL, newlines will be ignored.
|
---|
2397 |
|
---|
2398 | SHELL is the shell to use, or nil to use the default shell.
|
---|
2399 | IFS is the value of $IFS, or nil (meaning the default).
|
---|
2400 |
|
---|
2401 | FLAGS is the value of lines_flags for this command line. It is
|
---|
2402 | used in the WINDOWS32 port to check whether + or $(MAKE) were found
|
---|
2403 | in this command line, in which case the effect of just_print_flag
|
---|
2404 | is overridden. */
|
---|
2405 |
|
---|
2406 | static char **
|
---|
2407 | construct_command_argv_internal (char *line, char **restp, const char *shell,
|
---|
2408 | const char *shellflags, const char *ifs,
|
---|
2409 | int flags, char **batch_filename UNUSED)
|
---|
2410 | {
|
---|
2411 | #ifdef __MSDOS__
|
---|
2412 | /* MSDOS supports both the stock DOS shell and ports of Unixy shells.
|
---|
2413 | We call 'system' for anything that requires ''slow'' processing,
|
---|
2414 | because DOS shells are too dumb. When $SHELL points to a real
|
---|
2415 | (unix-style) shell, 'system' just calls it to do everything. When
|
---|
2416 | $SHELL points to a DOS shell, 'system' does most of the work
|
---|
2417 | internally, calling the shell only for its internal commands.
|
---|
2418 | However, it looks on the $PATH first, so you can e.g. have an
|
---|
2419 | external command named 'mkdir'.
|
---|
2420 |
|
---|
2421 | Since we call 'system', certain characters and commands below are
|
---|
2422 | actually not specific to COMMAND.COM, but to the DJGPP implementation
|
---|
2423 | of 'system'. In particular:
|
---|
2424 |
|
---|
2425 | The shell wildcard characters are in DOS_CHARS because they will
|
---|
2426 | not be expanded if we call the child via 'spawnXX'.
|
---|
2427 |
|
---|
2428 | The ';' is in DOS_CHARS, because our 'system' knows how to run
|
---|
2429 | multiple commands on a single line.
|
---|
2430 |
|
---|
2431 | DOS_CHARS also include characters special to 4DOS/NDOS, so we
|
---|
2432 | won't have to tell one from another and have one more set of
|
---|
2433 | commands and special characters. */
|
---|
2434 | static const char *sh_chars_dos = "*?[];|<>%^&()";
|
---|
2435 | static const char *sh_cmds_dos[] =
|
---|
2436 | { "break", "call", "cd", "chcp", "chdir", "cls", "copy", "ctty", "date",
|
---|
2437 | "del", "dir", "echo", "erase", "exit", "for", "goto", "if", "md",
|
---|
2438 | "mkdir", "path", "pause", "prompt", "rd", "rmdir", "rem", "ren",
|
---|
2439 | "rename", "set", "shift", "time", "type", "ver", "verify", "vol", ":",
|
---|
2440 | 0 };
|
---|
2441 |
|
---|
2442 | static const char *sh_chars_sh = "#;\"*?[]&|<>(){}$`^";
|
---|
2443 | static const char *sh_cmds_sh[] =
|
---|
2444 | { "cd", "echo", "eval", "exec", "exit", "login", "logout", "set", "umask",
|
---|
2445 | "wait", "while", "for", "case", "if", ":", ".", "break", "continue",
|
---|
2446 | "export", "read", "readonly", "shift", "times", "trap", "switch",
|
---|
2447 | "unset", "ulimit", 0 };
|
---|
2448 |
|
---|
2449 | const char *sh_chars;
|
---|
2450 | const char **sh_cmds;
|
---|
2451 |
|
---|
2452 | #elif defined (__EMX__)
|
---|
2453 | static const char *sh_chars_dos = "*?[];|<>%^&()";
|
---|
2454 | static const char *sh_cmds_dos[] =
|
---|
2455 | { "break", "call", "cd", "chcp", "chdir", "cls", "copy", "ctty", "date",
|
---|
2456 | "del", "dir", "echo", "erase", "exit", "for", "goto", "if", "md",
|
---|
2457 | "mkdir", "path", "pause", "prompt", "rd", "rmdir", "rem", "ren",
|
---|
2458 | "rename", "set", "shift", "time", "type", "ver", "verify", "vol", ":",
|
---|
2459 | 0 };
|
---|
2460 |
|
---|
2461 | static const char *sh_chars_os2 = "*?[];|<>%^()\"'&";
|
---|
2462 | static const char *sh_cmds_os2[] =
|
---|
2463 | { "call", "cd", "chcp", "chdir", "cls", "copy", "date", "del", "detach",
|
---|
2464 | "dir", "echo", "endlocal", "erase", "exit", "for", "goto", "if", "keys",
|
---|
2465 | "md", "mkdir", "move", "path", "pause", "prompt", "rd", "rem", "ren",
|
---|
2466 | "rename", "rmdir", "set", "setlocal", "shift", "start", "time", "type",
|
---|
2467 | "ver", "verify", "vol", ":", 0 };
|
---|
2468 |
|
---|
2469 | static const char *sh_chars_sh = "#;\"*?[]&|<>(){}$`^~'";
|
---|
2470 | static const char *sh_cmds_sh[] =
|
---|
2471 | { "echo", "cd", "eval", "exec", "exit", "login", "logout", "set", "umask",
|
---|
2472 | "wait", "while", "for", "case", "if", ":", ".", "break", "continue",
|
---|
2473 | "export", "read", "readonly", "shift", "times", "trap", "switch",
|
---|
2474 | "unset", 0 };
|
---|
2475 |
|
---|
2476 | const char *sh_chars;
|
---|
2477 | const char **sh_cmds;
|
---|
2478 |
|
---|
2479 | #elif defined (_AMIGA)
|
---|
2480 | static const char *sh_chars = "#;\"|<>()?*$`";
|
---|
2481 | static const char *sh_cmds[] =
|
---|
2482 | { "cd", "eval", "if", "delete", "echo", "copy", "rename", "set", "setenv",
|
---|
2483 | "date", "makedir", "skip", "else", "endif", "path", "prompt", "unset",
|
---|
2484 | "unsetenv", "version", 0 };
|
---|
2485 |
|
---|
2486 | #elif defined (WINDOWS32)
|
---|
2487 | /* We used to have a double quote (") in sh_chars_dos[] below, but
|
---|
2488 | that caused any command line with quoted file names be run
|
---|
2489 | through a temporary batch file, which introduces command-line
|
---|
2490 | limit of 4K charcaters imposed by cmd.exe. Since CreateProcess
|
---|
2491 | can handle quoted file names just fine, removing the quote lifts
|
---|
2492 | the limit from a very frequent use case, because using quoted
|
---|
2493 | file names is commonplace on MS-Windows. */
|
---|
2494 | static const char *sh_chars_dos = "|&<>";
|
---|
2495 | static const char *sh_cmds_dos[] =
|
---|
2496 | { "assoc", "break", "call", "cd", "chcp", "chdir", "cls", "color", "copy",
|
---|
2497 | "ctty", "date", "del", "dir", "echo", "echo.", "endlocal", "erase",
|
---|
2498 | "exit", "for", "ftype", "goto", "if", "if", "md", "mkdir", "move",
|
---|
2499 | "path", "pause", "prompt", "rd", "rem", "ren", "rename", "rmdir",
|
---|
2500 | "set", "setlocal", "shift", "time", "title", "type", "ver", "verify",
|
---|
2501 | "vol", ":", 0 };
|
---|
2502 |
|
---|
2503 | static const char *sh_chars_sh = "#;\"*?[]&|<>(){}$`^";
|
---|
2504 | static const char *sh_cmds_sh[] =
|
---|
2505 | { "cd", "eval", "exec", "exit", "login", "logout", "set", "umask", "wait",
|
---|
2506 | "while", "for", "case", "if", ":", ".", "break", "continue", "export",
|
---|
2507 | "read", "readonly", "shift", "times", "trap", "switch", "test",
|
---|
2508 | #ifdef BATCH_MODE_ONLY_SHELL
|
---|
2509 | "echo",
|
---|
2510 | #endif
|
---|
2511 | 0 };
|
---|
2512 |
|
---|
2513 | const char *sh_chars;
|
---|
2514 | const char **sh_cmds;
|
---|
2515 | #elif defined(__riscos__)
|
---|
2516 | static const char *sh_chars = "";
|
---|
2517 | static const char *sh_cmds[] = { 0 };
|
---|
2518 | #else /* must be UNIX-ish */
|
---|
2519 | static const char *sh_chars = "#;\"*?[]&|<>(){}$`^~!";
|
---|
2520 | static const char *sh_cmds[] =
|
---|
2521 | { ".", ":", "break", "case", "cd", "continue", "eval", "exec", "exit",
|
---|
2522 | "export", "for", "if", "login", "logout", "read", "readonly", "set",
|
---|
2523 | "shift", "switch", "test", "times", "trap", "ulimit", "umask", "unset",
|
---|
2524 | "wait", "while", 0 };
|
---|
2525 |
|
---|
2526 | # ifdef HAVE_DOS_PATHS
|
---|
2527 | /* This is required if the MSYS/Cygwin ports (which do not define
|
---|
2528 | WINDOWS32) are compiled with HAVE_DOS_PATHS defined, which uses
|
---|
2529 | sh_chars_sh directly (see below). The value must be identical
|
---|
2530 | to that of sh_chars immediately above. */
|
---|
2531 | static const char *sh_chars_sh = "#;\"*?[]&|<>(){}$`^~!";
|
---|
2532 | # endif /* HAVE_DOS_PATHS */
|
---|
2533 | #endif
|
---|
2534 | int i;
|
---|
2535 | char *p;
|
---|
2536 | #ifndef NDEBUG
|
---|
2537 | char *end;
|
---|
2538 | #endif
|
---|
2539 | char *ap;
|
---|
2540 | const char *cap;
|
---|
2541 | const char *cp;
|
---|
2542 | int instring, word_has_equals, seen_nonequals, last_argument_was_empty;
|
---|
2543 | char **new_argv = 0;
|
---|
2544 | char *argstr = 0;
|
---|
2545 | #ifdef WINDOWS32
|
---|
2546 | int slow_flag = 0;
|
---|
2547 |
|
---|
2548 | if (!unixy_shell)
|
---|
2549 | {
|
---|
2550 | sh_cmds = sh_cmds_dos;
|
---|
2551 | sh_chars = sh_chars_dos;
|
---|
2552 | }
|
---|
2553 | else
|
---|
2554 | {
|
---|
2555 | sh_cmds = sh_cmds_sh;
|
---|
2556 | sh_chars = sh_chars_sh;
|
---|
2557 | }
|
---|
2558 | #endif /* WINDOWS32 */
|
---|
2559 |
|
---|
2560 | if (restp != NULL)
|
---|
2561 | *restp = NULL;
|
---|
2562 |
|
---|
2563 | /* Make sure not to bother processing an empty line but stop at newline. */
|
---|
2564 | while (ISBLANK (*line))
|
---|
2565 | ++line;
|
---|
2566 | if (*line == '\0')
|
---|
2567 | return 0;
|
---|
2568 |
|
---|
2569 | if (shellflags == 0)
|
---|
2570 | shellflags = posix_pedantic ? "-ec" : "-c";
|
---|
2571 |
|
---|
2572 | /* See if it is safe to parse commands internally. */
|
---|
2573 | if (shell == 0)
|
---|
2574 | shell = default_shell;
|
---|
2575 | #ifdef WINDOWS32
|
---|
2576 | else if (strcmp (shell, default_shell))
|
---|
2577 | {
|
---|
2578 | char *s1 = _fullpath (NULL, shell, 0);
|
---|
2579 | char *s2 = _fullpath (NULL, default_shell, 0);
|
---|
2580 |
|
---|
2581 | slow_flag = strcmp ((s1 ? s1 : ""), (s2 ? s2 : ""));
|
---|
2582 |
|
---|
2583 | free (s1);
|
---|
2584 | free (s2);
|
---|
2585 | }
|
---|
2586 | if (slow_flag)
|
---|
2587 | goto slow;
|
---|
2588 | #else /* not WINDOWS32 */
|
---|
2589 | #if defined (__MSDOS__) || defined (__EMX__)
|
---|
2590 | else if (strcasecmp (shell, default_shell))
|
---|
2591 | {
|
---|
2592 | extern int _is_unixy_shell (const char *_path);
|
---|
2593 |
|
---|
2594 | DB (DB_BASIC, (_("$SHELL changed (was '%s', now '%s')\n"),
|
---|
2595 | default_shell, shell));
|
---|
2596 | unixy_shell = _is_unixy_shell (shell);
|
---|
2597 | /* we must allocate a copy of shell: construct_command_argv() will free
|
---|
2598 | * shell after this function returns. */
|
---|
2599 | default_shell = xstrdup (shell);
|
---|
2600 | }
|
---|
2601 | if (unixy_shell)
|
---|
2602 | {
|
---|
2603 | sh_chars = sh_chars_sh;
|
---|
2604 | sh_cmds = sh_cmds_sh;
|
---|
2605 | }
|
---|
2606 | else
|
---|
2607 | {
|
---|
2608 | sh_chars = sh_chars_dos;
|
---|
2609 | sh_cmds = sh_cmds_dos;
|
---|
2610 | # ifdef __EMX__
|
---|
2611 | if (_osmode == OS2_MODE)
|
---|
2612 | {
|
---|
2613 | sh_chars = sh_chars_os2;
|
---|
2614 | sh_cmds = sh_cmds_os2;
|
---|
2615 | }
|
---|
2616 | # endif
|
---|
2617 | }
|
---|
2618 | #else /* !__MSDOS__ */
|
---|
2619 | else if (strcmp (shell, default_shell))
|
---|
2620 | goto slow;
|
---|
2621 | #endif /* !__MSDOS__ && !__EMX__ */
|
---|
2622 | #endif /* not WINDOWS32 */
|
---|
2623 |
|
---|
2624 | if (ifs)
|
---|
2625 | for (cap = ifs; *cap != '\0'; ++cap)
|
---|
2626 | if (*cap != ' ' && *cap != '\t' && *cap != '\n')
|
---|
2627 | goto slow;
|
---|
2628 |
|
---|
2629 | if (shellflags)
|
---|
2630 | if (shellflags[0] != '-'
|
---|
2631 | || ((shellflags[1] != 'c' || shellflags[2] != '\0')
|
---|
2632 | && (shellflags[1] != 'e' || shellflags[2] != 'c' || shellflags[3] != '\0')))
|
---|
2633 | goto slow;
|
---|
2634 |
|
---|
2635 | i = strlen (line) + 1;
|
---|
2636 |
|
---|
2637 | /* More than 1 arg per character is impossible. */
|
---|
2638 | new_argv = xmalloc (i * sizeof (char *));
|
---|
2639 |
|
---|
2640 | /* All the args can fit in a buffer as big as LINE is. */
|
---|
2641 | ap = new_argv[0] = argstr = xmalloc (i);
|
---|
2642 | #ifndef NDEBUG
|
---|
2643 | end = ap + i;
|
---|
2644 | #endif
|
---|
2645 |
|
---|
2646 | /* I is how many complete arguments have been found. */
|
---|
2647 | i = 0;
|
---|
2648 | instring = word_has_equals = seen_nonequals = last_argument_was_empty = 0;
|
---|
2649 | for (p = line; *p != '\0'; ++p)
|
---|
2650 | {
|
---|
2651 | assert (ap <= end);
|
---|
2652 |
|
---|
2653 | if (instring)
|
---|
2654 | {
|
---|
2655 | /* Inside a string, just copy any char except a closing quote
|
---|
2656 | or a backslash-newline combination. */
|
---|
2657 | if (*p == instring)
|
---|
2658 | {
|
---|
2659 | instring = 0;
|
---|
2660 | if (ap == new_argv[0] || *(ap-1) == '\0')
|
---|
2661 | last_argument_was_empty = 1;
|
---|
2662 | }
|
---|
2663 | else if (*p == '\\' && p[1] == '\n')
|
---|
2664 | {
|
---|
2665 | /* Backslash-newline is handled differently depending on what
|
---|
2666 | kind of string we're in: inside single-quoted strings you
|
---|
2667 | keep them; in double-quoted strings they disappear. For
|
---|
2668 | DOS/Windows/OS2, if we don't have a POSIX shell, we keep the
|
---|
2669 | pre-POSIX behavior of removing the backslash-newline. */
|
---|
2670 | if (instring == '"'
|
---|
2671 | #if defined (__MSDOS__) || defined (__EMX__) || defined (WINDOWS32)
|
---|
2672 | || !unixy_shell
|
---|
2673 | #endif
|
---|
2674 | )
|
---|
2675 | ++p;
|
---|
2676 | else
|
---|
2677 | {
|
---|
2678 | *(ap++) = *(p++);
|
---|
2679 | *(ap++) = *p;
|
---|
2680 | }
|
---|
2681 | }
|
---|
2682 | else if (*p == '\n' && restp != NULL)
|
---|
2683 | {
|
---|
2684 | /* End of the command line. */
|
---|
2685 | *restp = p;
|
---|
2686 | goto end_of_line;
|
---|
2687 | }
|
---|
2688 | /* Backslash, $, and ` are special inside double quotes.
|
---|
2689 | If we see any of those, punt.
|
---|
2690 | But on MSDOS, if we use COMMAND.COM, double and single
|
---|
2691 | quotes have the same effect. */
|
---|
2692 | else if (instring == '"' && strchr ("\\$`", *p) != 0 && unixy_shell)
|
---|
2693 | goto slow;
|
---|
2694 | #ifdef WINDOWS32
|
---|
2695 | /* Quoted wildcard characters must be passed quoted to the
|
---|
2696 | command, so give up the fast route. */
|
---|
2697 | else if (instring == '"' && strchr ("*?", *p) != 0 && !unixy_shell)
|
---|
2698 | goto slow;
|
---|
2699 | else if (instring == '"' && strncmp (p, "\\\"", 2) == 0)
|
---|
2700 | *ap++ = *++p;
|
---|
2701 | #endif
|
---|
2702 | else
|
---|
2703 | *ap++ = *p;
|
---|
2704 | }
|
---|
2705 | else if (strchr (sh_chars, *p) != 0)
|
---|
2706 | /* Not inside a string, but it's a special char. */
|
---|
2707 | goto slow;
|
---|
2708 | else if (one_shell && *p == '\n')
|
---|
2709 | /* In .ONESHELL mode \n is a separator like ; or && */
|
---|
2710 | goto slow;
|
---|
2711 | #ifdef __MSDOS__
|
---|
2712 | else if (*p == '.' && p[1] == '.' && p[2] == '.' && p[3] != '.')
|
---|
2713 | /* '...' is a wildcard in DJGPP. */
|
---|
2714 | goto slow;
|
---|
2715 | #endif
|
---|
2716 | else
|
---|
2717 | /* Not a special char. */
|
---|
2718 | switch (*p)
|
---|
2719 | {
|
---|
2720 | case '=':
|
---|
2721 | /* Equals is a special character in leading words before the
|
---|
2722 | first word with no equals sign in it. This is not the case
|
---|
2723 | with sh -k, but we never get here when using nonstandard
|
---|
2724 | shell flags. */
|
---|
2725 | if (! seen_nonequals && unixy_shell)
|
---|
2726 | goto slow;
|
---|
2727 | word_has_equals = 1;
|
---|
2728 | *ap++ = '=';
|
---|
2729 | break;
|
---|
2730 |
|
---|
2731 | case '\\':
|
---|
2732 | /* Backslash-newline has special case handling, ref POSIX.
|
---|
2733 | We're in the fastpath, so emulate what the shell would do. */
|
---|
2734 | if (p[1] == '\n')
|
---|
2735 | {
|
---|
2736 | /* Throw out the backslash and newline. */
|
---|
2737 | ++p;
|
---|
2738 |
|
---|
2739 | /* At the beginning of the argument, skip any whitespace other
|
---|
2740 | than newline before the start of the next word. */
|
---|
2741 | if (ap == new_argv[i])
|
---|
2742 | while (ISBLANK (p[1]))
|
---|
2743 | ++p;
|
---|
2744 | }
|
---|
2745 | #ifdef WINDOWS32
|
---|
2746 | /* Backslash before whitespace is not special if our shell
|
---|
2747 | is not Unixy. */
|
---|
2748 | else if (ISSPACE (p[1]) && !unixy_shell)
|
---|
2749 | {
|
---|
2750 | *ap++ = *p;
|
---|
2751 | break;
|
---|
2752 | }
|
---|
2753 | #endif
|
---|
2754 | else if (p[1] != '\0')
|
---|
2755 | {
|
---|
2756 | #ifdef HAVE_DOS_PATHS
|
---|
2757 | /* Only remove backslashes before characters special to Unixy
|
---|
2758 | shells. All other backslashes are copied verbatim, since
|
---|
2759 | they are probably DOS-style directory separators. This
|
---|
2760 | still leaves a small window for problems, but at least it
|
---|
2761 | should work for the vast majority of naive users. */
|
---|
2762 |
|
---|
2763 | #ifdef __MSDOS__
|
---|
2764 | /* A dot is only special as part of the "..."
|
---|
2765 | wildcard. */
|
---|
2766 | if (strneq (p + 1, ".\\.\\.", 5))
|
---|
2767 | {
|
---|
2768 | *ap++ = '.';
|
---|
2769 | *ap++ = '.';
|
---|
2770 | p += 4;
|
---|
2771 | }
|
---|
2772 | else
|
---|
2773 | #endif
|
---|
2774 | if (p[1] != '\\' && p[1] != '\''
|
---|
2775 | && !ISSPACE (p[1])
|
---|
2776 | && strchr (sh_chars_sh, p[1]) == 0)
|
---|
2777 | /* back up one notch, to copy the backslash */
|
---|
2778 | --p;
|
---|
2779 | #endif /* HAVE_DOS_PATHS */
|
---|
2780 |
|
---|
2781 | /* Copy and skip the following char. */
|
---|
2782 | *ap++ = *++p;
|
---|
2783 | }
|
---|
2784 | break;
|
---|
2785 |
|
---|
2786 | case '\'':
|
---|
2787 | case '"':
|
---|
2788 | instring = *p;
|
---|
2789 | break;
|
---|
2790 |
|
---|
2791 | case '\n':
|
---|
2792 | if (restp != NULL)
|
---|
2793 | {
|
---|
2794 | /* End of the command line. */
|
---|
2795 | *restp = p;
|
---|
2796 | goto end_of_line;
|
---|
2797 | }
|
---|
2798 | else
|
---|
2799 | /* Newlines are not special. */
|
---|
2800 | *ap++ = '\n';
|
---|
2801 | break;
|
---|
2802 |
|
---|
2803 | case ' ':
|
---|
2804 | case '\t':
|
---|
2805 | /* We have the end of an argument.
|
---|
2806 | Terminate the text of the argument. */
|
---|
2807 | *ap++ = '\0';
|
---|
2808 | new_argv[++i] = ap;
|
---|
2809 | last_argument_was_empty = 0;
|
---|
2810 |
|
---|
2811 | /* Update SEEN_NONEQUALS, which tells us if every word
|
---|
2812 | heretofore has contained an '='. */
|
---|
2813 | seen_nonequals |= ! word_has_equals;
|
---|
2814 | if (word_has_equals && ! seen_nonequals)
|
---|
2815 | /* An '=' in a word before the first
|
---|
2816 | word without one is magical. */
|
---|
2817 | goto slow;
|
---|
2818 | word_has_equals = 0; /* Prepare for the next word. */
|
---|
2819 |
|
---|
2820 | /* If this argument is the command name,
|
---|
2821 | see if it is a built-in shell command.
|
---|
2822 | If so, have the shell handle it. */
|
---|
2823 | if (i == 1)
|
---|
2824 | {
|
---|
2825 | register int j;
|
---|
2826 | for (j = 0; sh_cmds[j] != 0; ++j)
|
---|
2827 | {
|
---|
2828 | if (streq (sh_cmds[j], new_argv[0]))
|
---|
2829 | goto slow;
|
---|
2830 | #if defined(__EMX__) || defined(WINDOWS32)
|
---|
2831 | /* Non-Unix shells are case insensitive. */
|
---|
2832 | if (!unixy_shell
|
---|
2833 | && strcasecmp (sh_cmds[j], new_argv[0]) == 0)
|
---|
2834 | goto slow;
|
---|
2835 | #endif
|
---|
2836 | }
|
---|
2837 | }
|
---|
2838 |
|
---|
2839 | /* Skip whitespace chars, but not newlines. */
|
---|
2840 | while (ISBLANK (p[1]))
|
---|
2841 | ++p;
|
---|
2842 | break;
|
---|
2843 |
|
---|
2844 | default:
|
---|
2845 | *ap++ = *p;
|
---|
2846 | break;
|
---|
2847 | }
|
---|
2848 | }
|
---|
2849 | end_of_line:
|
---|
2850 |
|
---|
2851 | if (instring)
|
---|
2852 | /* Let the shell deal with an unterminated quote. */
|
---|
2853 | goto slow;
|
---|
2854 |
|
---|
2855 | /* Terminate the last argument and the argument list. */
|
---|
2856 |
|
---|
2857 | *ap = '\0';
|
---|
2858 | if (new_argv[i][0] != '\0' || last_argument_was_empty)
|
---|
2859 | ++i;
|
---|
2860 | new_argv[i] = 0;
|
---|
2861 |
|
---|
2862 | if (i == 1)
|
---|
2863 | {
|
---|
2864 | register int j;
|
---|
2865 | for (j = 0; sh_cmds[j] != 0; ++j)
|
---|
2866 | if (streq (sh_cmds[j], new_argv[0]))
|
---|
2867 | goto slow;
|
---|
2868 | }
|
---|
2869 |
|
---|
2870 | if (new_argv[0] == 0)
|
---|
2871 | {
|
---|
2872 | /* Line was empty. */
|
---|
2873 | free (argstr);
|
---|
2874 | free (new_argv);
|
---|
2875 | return 0;
|
---|
2876 | }
|
---|
2877 |
|
---|
2878 | return new_argv;
|
---|
2879 |
|
---|
2880 | slow:;
|
---|
2881 | /* We must use the shell. */
|
---|
2882 |
|
---|
2883 | if (new_argv != 0)
|
---|
2884 | {
|
---|
2885 | /* Free the old argument list we were working on. */
|
---|
2886 | free (argstr);
|
---|
2887 | free (new_argv);
|
---|
2888 | }
|
---|
2889 |
|
---|
2890 | #ifdef __MSDOS__
|
---|
2891 | execute_by_shell = 1; /* actually, call 'system' if shell isn't unixy */
|
---|
2892 | #endif
|
---|
2893 |
|
---|
2894 | #ifdef _AMIGA
|
---|
2895 | {
|
---|
2896 | char *ptr;
|
---|
2897 | char *buffer;
|
---|
2898 | char *dptr;
|
---|
2899 |
|
---|
2900 | buffer = xmalloc (strlen (line)+1);
|
---|
2901 |
|
---|
2902 | ptr = line;
|
---|
2903 | for (dptr=buffer; *ptr; )
|
---|
2904 | {
|
---|
2905 | if (*ptr == '\\' && ptr[1] == '\n')
|
---|
2906 | ptr += 2;
|
---|
2907 | else if (*ptr == '@') /* Kludge: multiline commands */
|
---|
2908 | {
|
---|
2909 | ptr += 2;
|
---|
2910 | *dptr++ = '\n';
|
---|
2911 | }
|
---|
2912 | else
|
---|
2913 | *dptr++ = *ptr++;
|
---|
2914 | }
|
---|
2915 | *dptr = 0;
|
---|
2916 |
|
---|
2917 | new_argv = xmalloc (2 * sizeof (char *));
|
---|
2918 | new_argv[0] = buffer;
|
---|
2919 | new_argv[1] = 0;
|
---|
2920 | }
|
---|
2921 | #else /* Not Amiga */
|
---|
2922 | #ifdef WINDOWS32
|
---|
2923 | /*
|
---|
2924 | * Not eating this whitespace caused things like
|
---|
2925 | *
|
---|
2926 | * sh -c "\n"
|
---|
2927 | *
|
---|
2928 | * which gave the shell fits. I think we have to eat
|
---|
2929 | * whitespace here, but this code should be considered
|
---|
2930 | * suspicious if things start failing....
|
---|
2931 | */
|
---|
2932 |
|
---|
2933 | /* Make sure not to bother processing an empty line. */
|
---|
2934 | NEXT_TOKEN (line);
|
---|
2935 | if (*line == '\0')
|
---|
2936 | return 0;
|
---|
2937 | #endif /* WINDOWS32 */
|
---|
2938 |
|
---|
2939 | {
|
---|
2940 | /* SHELL may be a multi-word command. Construct a command line
|
---|
2941 | "$(SHELL) $(.SHELLFLAGS) LINE", with all special chars in LINE escaped.
|
---|
2942 | Then recurse, expanding this command line to get the final
|
---|
2943 | argument list. */
|
---|
2944 |
|
---|
2945 | char *new_line;
|
---|
2946 | unsigned int shell_len = strlen (shell);
|
---|
2947 | unsigned int line_len = strlen (line);
|
---|
2948 | unsigned int sflags_len = shellflags ? strlen (shellflags) : 0;
|
---|
2949 | #ifdef WINDOWS32
|
---|
2950 | char *command_ptr = NULL; /* used for batch_mode_shell mode */
|
---|
2951 | #endif
|
---|
2952 |
|
---|
2953 | # ifdef __EMX__ /* is this necessary? */
|
---|
2954 | if (!unixy_shell && shellflags)
|
---|
2955 | shellflags[0] = '/'; /* "/c" */
|
---|
2956 | # endif
|
---|
2957 |
|
---|
2958 | /* In .ONESHELL mode we are allowed to throw the entire current
|
---|
2959 | recipe string at a single shell and trust that the user
|
---|
2960 | has configured the shell and shell flags, and formatted
|
---|
2961 | the string, appropriately. */
|
---|
2962 | if (one_shell)
|
---|
2963 | {
|
---|
2964 | /* If the shell is Bourne compatible, we must remove and ignore
|
---|
2965 | interior special chars [@+-] because they're meaningless to
|
---|
2966 | the shell itself. If, however, we're in .ONESHELL mode and
|
---|
2967 | have changed SHELL to something non-standard, we should
|
---|
2968 | leave those alone because they could be part of the
|
---|
2969 | script. In this case we must also leave in place
|
---|
2970 | any leading [@+-] for the same reason. */
|
---|
2971 |
|
---|
2972 | /* Remove and ignore interior prefix chars [@+-] because they're
|
---|
2973 | meaningless given a single shell. */
|
---|
2974 | #if defined __MSDOS__ || defined (__EMX__)
|
---|
2975 | if (unixy_shell) /* the test is complicated and we already did it */
|
---|
2976 | #else
|
---|
2977 | if (is_bourne_compatible_shell (shell)
|
---|
2978 | #ifdef WINDOWS32
|
---|
2979 | /* If we didn't find any sh.exe, don't behave is if we did! */
|
---|
2980 | && !no_default_sh_exe
|
---|
2981 | #endif
|
---|
2982 | )
|
---|
2983 | #endif
|
---|
2984 | {
|
---|
2985 | const char *f = line;
|
---|
2986 | char *t = line;
|
---|
2987 |
|
---|
2988 | /* Copy the recipe, removing and ignoring interior prefix chars
|
---|
2989 | [@+-]: they're meaningless in .ONESHELL mode. */
|
---|
2990 | while (f[0] != '\0')
|
---|
2991 | {
|
---|
2992 | int esc = 0;
|
---|
2993 |
|
---|
2994 | /* This is the start of a new recipe line. Skip whitespace
|
---|
2995 | and prefix characters but not newlines. */
|
---|
2996 | while (ISBLANK (*f) || *f == '-' || *f == '@' || *f == '+')
|
---|
2997 | ++f;
|
---|
2998 |
|
---|
2999 | /* Copy until we get to the next logical recipe line. */
|
---|
3000 | while (*f != '\0')
|
---|
3001 | {
|
---|
3002 | *(t++) = *(f++);
|
---|
3003 | if (f[-1] == '\\')
|
---|
3004 | esc = !esc;
|
---|
3005 | else
|
---|
3006 | {
|
---|
3007 | /* On unescaped newline, we're done with this line. */
|
---|
3008 | if (f[-1] == '\n' && ! esc)
|
---|
3009 | break;
|
---|
3010 |
|
---|
3011 | /* Something else: reset the escape sequence. */
|
---|
3012 | esc = 0;
|
---|
3013 | }
|
---|
3014 | }
|
---|
3015 | }
|
---|
3016 | *t = '\0';
|
---|
3017 | }
|
---|
3018 | #ifdef WINDOWS32
|
---|
3019 | else /* non-Posix shell (cmd.exe etc.) */
|
---|
3020 | {
|
---|
3021 | const char *f = line;
|
---|
3022 | char *t = line;
|
---|
3023 | char *tstart = t;
|
---|
3024 | int temp_fd;
|
---|
3025 | FILE* batch = NULL;
|
---|
3026 | int id = GetCurrentProcessId ();
|
---|
3027 | PATH_VAR(fbuf);
|
---|
3028 |
|
---|
3029 | /* Generate a file name for the temporary batch file. */
|
---|
3030 | sprintf (fbuf, "make%d", id);
|
---|
3031 | *batch_filename = create_batch_file (fbuf, 0, &temp_fd);
|
---|
3032 | DB (DB_JOBS, (_("Creating temporary batch file %s\n"),
|
---|
3033 | *batch_filename));
|
---|
3034 |
|
---|
3035 | /* Create a FILE object for the batch file, and write to it the
|
---|
3036 | commands to be executed. Put the batch file in TEXT mode. */
|
---|
3037 | _setmode (temp_fd, _O_TEXT);
|
---|
3038 | batch = _fdopen (temp_fd, "wt");
|
---|
3039 | fputs ("@echo off\n", batch);
|
---|
3040 | DB (DB_JOBS, (_("Batch file contents:\n\t@echo off\n")));
|
---|
3041 |
|
---|
3042 | /* Copy the recipe, removing and ignoring interior prefix chars
|
---|
3043 | [@+-]: they're meaningless in .ONESHELL mode. */
|
---|
3044 | while (*f != '\0')
|
---|
3045 | {
|
---|
3046 | /* This is the start of a new recipe line. Skip whitespace
|
---|
3047 | and prefix characters but not newlines. */
|
---|
3048 | while (ISBLANK (*f) || *f == '-' || *f == '@' || *f == '+')
|
---|
3049 | ++f;
|
---|
3050 |
|
---|
3051 | /* Copy until we get to the next logical recipe line. */
|
---|
3052 | while (*f != '\0')
|
---|
3053 | {
|
---|
3054 | /* Remove the escaped newlines in the command, and the
|
---|
3055 | blanks that follow them. Windows shells cannot handle
|
---|
3056 | escaped newlines. */
|
---|
3057 | if (*f == '\\' && f[1] == '\n')
|
---|
3058 | {
|
---|
3059 | f += 2;
|
---|
3060 | while (ISBLANK (*f))
|
---|
3061 | ++f;
|
---|
3062 | }
|
---|
3063 | *(t++) = *(f++);
|
---|
3064 | /* On an unescaped newline, we're done with this
|
---|
3065 | line. */
|
---|
3066 | if (f[-1] == '\n')
|
---|
3067 | break;
|
---|
3068 | }
|
---|
3069 | /* Write another line into the batch file. */
|
---|
3070 | if (t > tstart)
|
---|
3071 | {
|
---|
3072 | char c = *t;
|
---|
3073 | *t = '\0';
|
---|
3074 | fputs (tstart, batch);
|
---|
3075 | DB (DB_JOBS, ("\t%s", tstart));
|
---|
3076 | tstart = t;
|
---|
3077 | *t = c;
|
---|
3078 | }
|
---|
3079 | }
|
---|
3080 | DB (DB_JOBS, ("\n"));
|
---|
3081 | fclose (batch);
|
---|
3082 |
|
---|
3083 | /* Create an argv list for the shell command line that
|
---|
3084 | will run the batch file. */
|
---|
3085 | new_argv = xmalloc (2 * sizeof (char *));
|
---|
3086 | new_argv[0] = xstrdup (*batch_filename);
|
---|
3087 | new_argv[1] = NULL;
|
---|
3088 | return new_argv;
|
---|
3089 | }
|
---|
3090 | #endif /* WINDOWS32 */
|
---|
3091 | /* Create an argv list for the shell command line. */
|
---|
3092 | {
|
---|
3093 | int n = 0;
|
---|
3094 |
|
---|
3095 | new_argv = xmalloc ((4 + sflags_len/2) * sizeof (char *));
|
---|
3096 | new_argv[n++] = xstrdup (shell);
|
---|
3097 |
|
---|
3098 | /* Chop up the shellflags (if any) and assign them. */
|
---|
3099 | if (! shellflags)
|
---|
3100 | new_argv[n++] = xstrdup ("");
|
---|
3101 | else
|
---|
3102 | {
|
---|
3103 | const char *s = shellflags;
|
---|
3104 | char *t;
|
---|
3105 | unsigned int len;
|
---|
3106 | while ((t = find_next_token (&s, &len)) != 0)
|
---|
3107 | new_argv[n++] = xstrndup (t, len);
|
---|
3108 | }
|
---|
3109 |
|
---|
3110 | /* Set the command to invoke. */
|
---|
3111 | new_argv[n++] = line;
|
---|
3112 | new_argv[n++] = NULL;
|
---|
3113 | }
|
---|
3114 | return new_argv;
|
---|
3115 | }
|
---|
3116 |
|
---|
3117 | new_line = xmalloc ((shell_len*2) + 1 + sflags_len + 1
|
---|
3118 | + (line_len*2) + 1);
|
---|
3119 | ap = new_line;
|
---|
3120 | /* Copy SHELL, escaping any characters special to the shell. If
|
---|
3121 | we don't escape them, construct_command_argv_internal will
|
---|
3122 | recursively call itself ad nauseam, or until stack overflow,
|
---|
3123 | whichever happens first. */
|
---|
3124 | for (cp = shell; *cp != '\0'; ++cp)
|
---|
3125 | {
|
---|
3126 | if (strchr (sh_chars, *cp) != 0)
|
---|
3127 | *(ap++) = '\\';
|
---|
3128 | *(ap++) = *cp;
|
---|
3129 | }
|
---|
3130 | *(ap++) = ' ';
|
---|
3131 | if (shellflags)
|
---|
3132 | memcpy (ap, shellflags, sflags_len);
|
---|
3133 | ap += sflags_len;
|
---|
3134 | *(ap++) = ' ';
|
---|
3135 | #ifdef WINDOWS32
|
---|
3136 | command_ptr = ap;
|
---|
3137 | #endif
|
---|
3138 | for (p = line; *p != '\0'; ++p)
|
---|
3139 | {
|
---|
3140 | if (restp != NULL && *p == '\n')
|
---|
3141 | {
|
---|
3142 | *restp = p;
|
---|
3143 | break;
|
---|
3144 | }
|
---|
3145 | else if (*p == '\\' && p[1] == '\n')
|
---|
3146 | {
|
---|
3147 | /* POSIX says we keep the backslash-newline. If we don't have a
|
---|
3148 | POSIX shell on DOS/Windows/OS2, mimic the pre-POSIX behavior
|
---|
3149 | and remove the backslash/newline. */
|
---|
3150 | #if defined (__MSDOS__) || defined (__EMX__) || defined (WINDOWS32)
|
---|
3151 | # define PRESERVE_BSNL unixy_shell
|
---|
3152 | #else
|
---|
3153 | # define PRESERVE_BSNL 1
|
---|
3154 | #endif
|
---|
3155 | if (PRESERVE_BSNL)
|
---|
3156 | {
|
---|
3157 | *(ap++) = '\\';
|
---|
3158 | /* Only non-batch execution needs another backslash,
|
---|
3159 | because it will be passed through a recursive
|
---|
3160 | invocation of this function. */
|
---|
3161 | if (!batch_mode_shell)
|
---|
3162 | *(ap++) = '\\';
|
---|
3163 | *(ap++) = '\n';
|
---|
3164 | }
|
---|
3165 | ++p;
|
---|
3166 | continue;
|
---|
3167 | }
|
---|
3168 |
|
---|
3169 | /* DOS shells don't know about backslash-escaping. */
|
---|
3170 | if (unixy_shell && !batch_mode_shell &&
|
---|
3171 | (*p == '\\' || *p == '\'' || *p == '"'
|
---|
3172 | || ISSPACE (*p)
|
---|
3173 | || strchr (sh_chars, *p) != 0))
|
---|
3174 | *ap++ = '\\';
|
---|
3175 | #ifdef __MSDOS__
|
---|
3176 | else if (unixy_shell && strneq (p, "...", 3))
|
---|
3177 | {
|
---|
3178 | /* The case of '...' wildcard again. */
|
---|
3179 | strcpy (ap, "\\.\\.\\");
|
---|
3180 | ap += 5;
|
---|
3181 | p += 2;
|
---|
3182 | }
|
---|
3183 | #endif
|
---|
3184 | *ap++ = *p;
|
---|
3185 | }
|
---|
3186 | if (ap == new_line + shell_len + sflags_len + 2)
|
---|
3187 | {
|
---|
3188 | /* Line was empty. */
|
---|
3189 | free (new_line);
|
---|
3190 | return 0;
|
---|
3191 | }
|
---|
3192 | *ap = '\0';
|
---|
3193 |
|
---|
3194 | #ifdef WINDOWS32
|
---|
3195 | /* Some shells do not work well when invoked as 'sh -c xxx' to run a
|
---|
3196 | command line (e.g. Cygnus GNUWIN32 sh.exe on WIN32 systems). In these
|
---|
3197 | cases, run commands via a script file. */
|
---|
3198 | if (just_print_flag && !(flags & COMMANDS_RECURSE))
|
---|
3199 | {
|
---|
3200 | /* Need to allocate new_argv, although it's unused, because
|
---|
3201 | start_job_command will want to free it and its 0'th element. */
|
---|
3202 | new_argv = xmalloc (2 * sizeof (char *));
|
---|
3203 | new_argv[0] = xstrdup ("");
|
---|
3204 | new_argv[1] = NULL;
|
---|
3205 | }
|
---|
3206 | else if ((no_default_sh_exe || batch_mode_shell) && batch_filename)
|
---|
3207 | {
|
---|
3208 | int temp_fd;
|
---|
3209 | FILE* batch = NULL;
|
---|
3210 | int id = GetCurrentProcessId ();
|
---|
3211 | PATH_VAR (fbuf);
|
---|
3212 |
|
---|
3213 | /* create a file name */
|
---|
3214 | sprintf (fbuf, "make%d", id);
|
---|
3215 | *batch_filename = create_batch_file (fbuf, unixy_shell, &temp_fd);
|
---|
3216 |
|
---|
3217 | DB (DB_JOBS, (_("Creating temporary batch file %s\n"),
|
---|
3218 | *batch_filename));
|
---|
3219 |
|
---|
3220 | /* Create a FILE object for the batch file, and write to it the
|
---|
3221 | commands to be executed. Put the batch file in TEXT mode. */
|
---|
3222 | _setmode (temp_fd, _O_TEXT);
|
---|
3223 | batch = _fdopen (temp_fd, "wt");
|
---|
3224 | if (!unixy_shell)
|
---|
3225 | fputs ("@echo off\n", batch);
|
---|
3226 | fputs (command_ptr, batch);
|
---|
3227 | fputc ('\n', batch);
|
---|
3228 | fclose (batch);
|
---|
3229 | DB (DB_JOBS, (_("Batch file contents:%s\n\t%s\n"),
|
---|
3230 | !unixy_shell ? "\n\t@echo off" : "", command_ptr));
|
---|
3231 |
|
---|
3232 | /* create argv */
|
---|
3233 | new_argv = xmalloc (3 * sizeof (char *));
|
---|
3234 | if (unixy_shell)
|
---|
3235 | {
|
---|
3236 | new_argv[0] = xstrdup (shell);
|
---|
3237 | new_argv[1] = *batch_filename; /* only argv[0] gets freed later */
|
---|
3238 | }
|
---|
3239 | else
|
---|
3240 | {
|
---|
3241 | new_argv[0] = xstrdup (*batch_filename);
|
---|
3242 | new_argv[1] = NULL;
|
---|
3243 | }
|
---|
3244 | new_argv[2] = NULL;
|
---|
3245 | }
|
---|
3246 | else
|
---|
3247 | #endif /* WINDOWS32 */
|
---|
3248 |
|
---|
3249 | if (unixy_shell)
|
---|
3250 | new_argv = construct_command_argv_internal (new_line, 0, 0, 0, 0,
|
---|
3251 | flags, 0);
|
---|
3252 |
|
---|
3253 | #ifdef __EMX__
|
---|
3254 | else if (!unixy_shell)
|
---|
3255 | {
|
---|
3256 | /* new_line is local, must not be freed therefore
|
---|
3257 | We use line here instead of new_line because we run the shell
|
---|
3258 | manually. */
|
---|
3259 | size_t line_len = strlen (line);
|
---|
3260 | char *p = new_line;
|
---|
3261 | char *q = new_line;
|
---|
3262 | memcpy (new_line, line, line_len + 1);
|
---|
3263 | /* Replace all backslash-newline combination and also following tabs.
|
---|
3264 | Important: stop at the first '\n' because that's what the loop above
|
---|
3265 | did. The next line starting at restp[0] will be executed during the
|
---|
3266 | next call of this function. */
|
---|
3267 | while (*q != '\0' && *q != '\n')
|
---|
3268 | {
|
---|
3269 | if (q[0] == '\\' && q[1] == '\n')
|
---|
3270 | q += 2; /* remove '\\' and '\n' */
|
---|
3271 | else
|
---|
3272 | *p++ = *q++;
|
---|
3273 | }
|
---|
3274 | *p = '\0';
|
---|
3275 |
|
---|
3276 | # ifndef NO_CMD_DEFAULT
|
---|
3277 | if (strnicmp (new_line, "echo", 4) == 0
|
---|
3278 | && (new_line[4] == ' ' || new_line[4] == '\t'))
|
---|
3279 | {
|
---|
3280 | /* the builtin echo command: handle it separately */
|
---|
3281 | size_t echo_len = line_len - 5;
|
---|
3282 | char *echo_line = new_line + 5;
|
---|
3283 |
|
---|
3284 | /* special case: echo 'x="y"'
|
---|
3285 | cmd works this way: a string is printed as is, i.e., no quotes
|
---|
3286 | are removed. But autoconf uses a command like echo 'x="y"' to
|
---|
3287 | determine whether make works. autoconf expects the output x="y"
|
---|
3288 | so we will do exactly that.
|
---|
3289 | Note: if we do not allow cmd to be the default shell
|
---|
3290 | we do not need this kind of voodoo */
|
---|
3291 | if (echo_line[0] == '\''
|
---|
3292 | && echo_line[echo_len - 1] == '\''
|
---|
3293 | && strncmp (echo_line + 1, "ac_maketemp=",
|
---|
3294 | strlen ("ac_maketemp=")) == 0)
|
---|
3295 | {
|
---|
3296 | /* remove the enclosing quotes */
|
---|
3297 | memmove (echo_line, echo_line + 1, echo_len - 2);
|
---|
3298 | echo_line[echo_len - 2] = '\0';
|
---|
3299 | }
|
---|
3300 | }
|
---|
3301 | # endif
|
---|
3302 |
|
---|
3303 | {
|
---|
3304 | /* Let the shell decide what to do. Put the command line into the
|
---|
3305 | 2nd command line argument and hope for the best ;-) */
|
---|
3306 | size_t sh_len = strlen (shell);
|
---|
3307 |
|
---|
3308 | /* exactly 3 arguments + NULL */
|
---|
3309 | new_argv = xmalloc (4 * sizeof (char *));
|
---|
3310 | /* Exactly strlen(shell) + strlen("/c") + strlen(line) + 3 times
|
---|
3311 | the trailing '\0' */
|
---|
3312 | new_argv[0] = xmalloc (sh_len + line_len + 5);
|
---|
3313 | memcpy (new_argv[0], shell, sh_len + 1);
|
---|
3314 | new_argv[1] = new_argv[0] + sh_len + 1;
|
---|
3315 | memcpy (new_argv[1], "/c", 3);
|
---|
3316 | new_argv[2] = new_argv[1] + 3;
|
---|
3317 | memcpy (new_argv[2], new_line, line_len + 1);
|
---|
3318 | new_argv[3] = NULL;
|
---|
3319 | }
|
---|
3320 | }
|
---|
3321 | #elif defined(__MSDOS__)
|
---|
3322 | else
|
---|
3323 | {
|
---|
3324 | /* With MSDOS shells, we must construct the command line here
|
---|
3325 | instead of recursively calling ourselves, because we
|
---|
3326 | cannot backslash-escape the special characters (see above). */
|
---|
3327 | new_argv = xmalloc (sizeof (char *));
|
---|
3328 | line_len = strlen (new_line) - shell_len - sflags_len - 2;
|
---|
3329 | new_argv[0] = xmalloc (line_len + 1);
|
---|
3330 | strncpy (new_argv[0],
|
---|
3331 | new_line + shell_len + sflags_len + 2, line_len);
|
---|
3332 | new_argv[0][line_len] = '\0';
|
---|
3333 | }
|
---|
3334 | #else
|
---|
3335 | else
|
---|
3336 | fatal (NILF, CSTRLEN (__FILE__) + INTSTR_LENGTH,
|
---|
3337 | _("%s (line %d) Bad shell context (!unixy && !batch_mode_shell)\n"),
|
---|
3338 | __FILE__, __LINE__);
|
---|
3339 | #endif
|
---|
3340 |
|
---|
3341 | free (new_line);
|
---|
3342 | }
|
---|
3343 | #endif /* ! AMIGA */
|
---|
3344 |
|
---|
3345 | return new_argv;
|
---|
3346 | }
|
---|
3347 | #endif /* !VMS */
|
---|
3348 |
|
---|
3349 | /* Figure out the argument list necessary to run LINE as a command. Try to
|
---|
3350 | avoid using a shell. This routine handles only ' quoting, and " quoting
|
---|
3351 | when no backslash, $ or ' characters are seen in the quotes. Starting
|
---|
3352 | quotes may be escaped with a backslash. If any of the characters in
|
---|
3353 | sh_chars is seen, or any of the builtin commands listed in sh_cmds
|
---|
3354 | is the first word of a line, the shell is used.
|
---|
3355 |
|
---|
3356 | If RESTP is not NULL, *RESTP is set to point to the first newline in LINE.
|
---|
3357 | If *RESTP is NULL, newlines will be ignored.
|
---|
3358 |
|
---|
3359 | FILE is the target whose commands these are. It is used for
|
---|
3360 | variable expansion for $(SHELL) and $(IFS). */
|
---|
3361 |
|
---|
3362 | char **
|
---|
3363 | construct_command_argv (char *line, char **restp, struct file *file,
|
---|
3364 | int cmd_flags, char **batch_filename)
|
---|
3365 | {
|
---|
3366 | char *shell, *ifs, *shellflags;
|
---|
3367 | char **argv;
|
---|
3368 |
|
---|
3369 | #ifdef VMS
|
---|
3370 | char *cptr;
|
---|
3371 | int argc;
|
---|
3372 |
|
---|
3373 | argc = 0;
|
---|
3374 | cptr = line;
|
---|
3375 | for (;;)
|
---|
3376 | {
|
---|
3377 | while ((*cptr != 0) && (ISSPACE (*cptr)))
|
---|
3378 | cptr++;
|
---|
3379 | if (*cptr == 0)
|
---|
3380 | break;
|
---|
3381 | while ((*cptr != 0) && (!ISSPACE (*cptr)))
|
---|
3382 | cptr++;
|
---|
3383 | argc++;
|
---|
3384 | }
|
---|
3385 |
|
---|
3386 | argv = xmalloc (argc * sizeof (char *));
|
---|
3387 | if (argv == 0)
|
---|
3388 | abort ();
|
---|
3389 |
|
---|
3390 | cptr = line;
|
---|
3391 | argc = 0;
|
---|
3392 | for (;;)
|
---|
3393 | {
|
---|
3394 | while ((*cptr != 0) && (ISSPACE (*cptr)))
|
---|
3395 | cptr++;
|
---|
3396 | if (*cptr == 0)
|
---|
3397 | break;
|
---|
3398 | DB (DB_JOBS, ("argv[%d] = [%s]\n", argc, cptr));
|
---|
3399 | argv[argc++] = cptr;
|
---|
3400 | while ((*cptr != 0) && (!ISSPACE (*cptr)))
|
---|
3401 | cptr++;
|
---|
3402 | if (*cptr != 0)
|
---|
3403 | *cptr++ = 0;
|
---|
3404 | }
|
---|
3405 | #else
|
---|
3406 | {
|
---|
3407 | /* Turn off --warn-undefined-variables while we expand SHELL and IFS. */
|
---|
3408 | int save = warn_undefined_variables_flag;
|
---|
3409 | warn_undefined_variables_flag = 0;
|
---|
3410 |
|
---|
3411 | shell = allocated_variable_expand_for_file ("$(SHELL)", file);
|
---|
3412 | #ifdef WINDOWS32
|
---|
3413 | /*
|
---|
3414 | * Convert to forward slashes so that construct_command_argv_internal()
|
---|
3415 | * is not confused.
|
---|
3416 | */
|
---|
3417 | if (shell)
|
---|
3418 | {
|
---|
3419 | char *p = w32ify (shell, 0);
|
---|
3420 | strcpy (shell, p);
|
---|
3421 | }
|
---|
3422 | #endif
|
---|
3423 | #ifdef __EMX__
|
---|
3424 | {
|
---|
3425 | static const char *unixroot = NULL;
|
---|
3426 | static const char *last_shell = "";
|
---|
3427 | static int init = 0;
|
---|
3428 | if (init == 0)
|
---|
3429 | {
|
---|
3430 | unixroot = getenv ("UNIXROOT");
|
---|
3431 | /* unixroot must be NULL or not empty */
|
---|
3432 | if (unixroot && unixroot[0] == '\0') unixroot = NULL;
|
---|
3433 | init = 1;
|
---|
3434 | }
|
---|
3435 |
|
---|
3436 | /* if we have an unixroot drive and if shell is not default_shell
|
---|
3437 | (which means it's either cmd.exe or the test has already been
|
---|
3438 | performed) and if shell is an absolute path without drive letter,
|
---|
3439 | try whether it exists e.g.: if "/bin/sh" does not exist use
|
---|
3440 | "$UNIXROOT/bin/sh" instead. */
|
---|
3441 | if (unixroot && shell && strcmp (shell, last_shell) != 0
|
---|
3442 | && (shell[0] == '/' || shell[0] == '\\'))
|
---|
3443 | {
|
---|
3444 | /* trying a new shell, check whether it exists */
|
---|
3445 | size_t size = strlen (shell);
|
---|
3446 | char *buf = xmalloc (size + 7);
|
---|
3447 | memcpy (buf, shell, size);
|
---|
3448 | memcpy (buf + size, ".exe", 5); /* including the trailing '\0' */
|
---|
3449 | if (access (shell, F_OK) != 0 && access (buf, F_OK) != 0)
|
---|
3450 | {
|
---|
3451 | /* try the same for the unixroot drive */
|
---|
3452 | memmove (buf + 2, buf, size + 5);
|
---|
3453 | buf[0] = unixroot[0];
|
---|
3454 | buf[1] = unixroot[1];
|
---|
3455 | if (access (buf, F_OK) == 0)
|
---|
3456 | /* we have found a shell! */
|
---|
3457 | /* free(shell); */
|
---|
3458 | shell = buf;
|
---|
3459 | else
|
---|
3460 | free (buf);
|
---|
3461 | }
|
---|
3462 | else
|
---|
3463 | free (buf);
|
---|
3464 | }
|
---|
3465 | }
|
---|
3466 | #endif /* __EMX__ */
|
---|
3467 |
|
---|
3468 | shellflags = allocated_variable_expand_for_file ("$(.SHELLFLAGS)", file);
|
---|
3469 | ifs = allocated_variable_expand_for_file ("$(IFS)", file);
|
---|
3470 |
|
---|
3471 | warn_undefined_variables_flag = save;
|
---|
3472 | }
|
---|
3473 |
|
---|
3474 | argv = construct_command_argv_internal (line, restp, shell, shellflags, ifs,
|
---|
3475 | cmd_flags, batch_filename);
|
---|
3476 |
|
---|
3477 | free (shell);
|
---|
3478 | free (shellflags);
|
---|
3479 | free (ifs);
|
---|
3480 | #endif /* !VMS */
|
---|
3481 | return argv;
|
---|
3482 | }
|
---|
3483 | |
---|
3484 |
|
---|
3485 | #if !defined(HAVE_DUP2) && !defined(_AMIGA)
|
---|
3486 | int
|
---|
3487 | dup2 (int old, int new)
|
---|
3488 | {
|
---|
3489 | int fd;
|
---|
3490 |
|
---|
3491 | (void) close (new);
|
---|
3492 | EINTRLOOP (fd, dup (old));
|
---|
3493 | if (fd != new)
|
---|
3494 | {
|
---|
3495 | (void) close (fd);
|
---|
3496 | errno = EMFILE;
|
---|
3497 | return -1;
|
---|
3498 | }
|
---|
3499 |
|
---|
3500 | return fd;
|
---|
3501 | }
|
---|
3502 | #endif /* !HAVE_DUP2 && !_AMIGA */
|
---|
3503 |
|
---|
3504 | /* On VMS systems, include special VMS functions. */
|
---|
3505 |
|
---|
3506 | #ifdef VMS
|
---|
3507 | #include "vmsjobs.c"
|
---|
3508 | #endif
|
---|