annotate install-sh @ 80661:94de77bd0b4b 2.7

Issue #16194: document imp.load_dynamic problems when read several extension modules from the same binary object file.
author Andrew Svetlov <andrew.svetlov@gmail.com>
date Thu, 29 Nov 2012 19:51:28 +0200
parents 1f334198e6d7
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #!/bin/sh
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2 #
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3 # install - install a program, script, or datafile
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4 #
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5 # This originates from X11R5 (mit/util/scripts/install.sh), which was
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6 # later released in X11R6 (xc/config/util/install.sh) with the
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7 # following copyright and license.
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8 #
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9 # Copyright (C) 1994 X Consortium
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10 #
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11 # Permission is hereby granted, free of charge, to any person obtaining a copy
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12 # of this software and associated documentation files (the "Software"), to
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13 # deal in the Software without restriction, including without limitation the
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14 # rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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15 # sell copies of the Software, and to permit persons to whom the Software is
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16 # furnished to do so, subject to the following conditions:
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17 #
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18 # The above copyright notice and this permission notice shall be included in
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19 # all copies or substantial portions of the Software.
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20 #
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21 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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22 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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23 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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24 # X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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25 # AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC-
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26 # TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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27 #
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28 # Except as contained in this notice, the name of the X Consortium shall not
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29 # be used in advertising or otherwise to promote the sale, use or other deal-
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30 # ings in this Software without prior written authorization from the X Consor-
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31 # tium.
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32 #
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33 #
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34 # FSF changes to this file are in the public domain.
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35 #
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36 # Calling this script install-sh is preferred over install.sh, to prevent
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37 # `make' implicit rules from creating a file called install from it
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38 # when there is no Makefile.
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39 #
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40 # This script is compatible with the BSD install script, but was written
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41 # from scratch. It can only install one file at a time, a restriction
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42 # shared with many OS's install programs.
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43
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44
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45 # set DOITPROG to echo to test this script
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46
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47 # Don't use :- since 4.3BSD and earlier shells don't like it.
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48 doit="${DOITPROG-}"
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49
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50
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51 # put in absolute paths if you don't have them in your path; or use env. vars.
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52
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53 mvprog="${MVPROG-mv}"
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54 cpprog="${CPPROG-cp}"
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55 chmodprog="${CHMODPROG-chmod}"
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56 chownprog="${CHOWNPROG-chown}"
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57 chgrpprog="${CHGRPPROG-chgrp}"
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58 stripprog="${STRIPPROG-strip}"
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59 rmprog="${RMPROG-rm}"
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60 mkdirprog="${MKDIRPROG-mkdir}"
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61
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62 transformbasename=""
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63 transform_arg=""
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64 instcmd="$mvprog"
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65 chmodcmd="$chmodprog 0755"
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66 chowncmd=""
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67 chgrpcmd=""
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68 stripcmd=""
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69 rmcmd="$rmprog -f"
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70 mvcmd="$mvprog"
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71 src=""
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72 dst=""
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73 dir_arg=""
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74
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75 while [ x"$1" != x ]; do
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76 case $1 in
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77 -c) instcmd=$cpprog
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78 shift
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79 continue;;
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80
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81 -d) dir_arg=true
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82 shift
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83 continue;;
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84
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85 -m) chmodcmd="$chmodprog $2"
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86 shift
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87 shift
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88 continue;;
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89
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90 -o) chowncmd="$chownprog $2"
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91 shift
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92 shift
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93 continue;;
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94
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95 -g) chgrpcmd="$chgrpprog $2"
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96 shift
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97 shift
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98 continue;;
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99
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100 -s) stripcmd=$stripprog
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101 shift
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102 continue;;
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103
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104 -t=*) transformarg=`echo $1 | sed 's/-t=//'`
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105 shift
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106 continue;;
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107
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108 -b=*) transformbasename=`echo $1 | sed 's/-b=//'`
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109 shift
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110 continue;;
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111
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112 *) if [ x"$src" = x ]
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113 then
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114 src=$1
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115 else
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116 # this colon is to work around a 386BSD /bin/sh bug
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117 :
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118 dst=$1
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119 fi
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120 shift
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121 continue;;
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122 esac
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123 done
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124
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125 if [ x"$src" = x ]
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126 then
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127 echo "$0: no input file specified" >&2
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128 exit 1
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129 else
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130 :
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131 fi
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132
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133 if [ x"$dir_arg" != x ]; then
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134 dst=$src
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135 src=""
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136
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137 if [ -d "$dst" ]; then
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138 instcmd=:
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139 chmodcmd=""
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140 else
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141 instcmd=$mkdirprog
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142 fi
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143 else
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144
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145 # Waiting for this to be detected by the "$instcmd $src $dsttmp" command
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146 # might cause directories to be created, which would be especially bad
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147 # if $src (and thus $dsttmp) contains '*'.
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148
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149 if [ -f "$src" ] || [ -d "$src" ]
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150 then
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151 :
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152 else
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153 echo "$0: $src does not exist" >&2
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154 exit 1
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155 fi
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156
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157 if [ x"$dst" = x ]
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158 then
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159 echo "$0: no destination specified" >&2
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160 exit 1
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161 else
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162 :
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163 fi
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164
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165 # If destination is a directory, append the input filename; if your system
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166 # does not like double slashes in filenames, you may need to add some logic
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167
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168 if [ -d "$dst" ]
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169 then
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170 dst=$dst/`basename "$src"`
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171 else
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172 :
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173 fi
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174 fi
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175
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176 ## this sed command emulates the dirname command
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177 dstdir=`echo "$dst" | sed -e 's,[^/]*$,,;s,/$,,;s,^$,.,'`
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178
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179 # Make sure that the destination directory exists.
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180 # this part is taken from Noah Friedman's mkinstalldirs script
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181
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182 # Skip lots of stat calls in the usual case.
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183 if [ ! -d "$dstdir" ]; then
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184 defaultIFS='
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185 '
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186 IFS="${IFS-$defaultIFS}"
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187
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188 oIFS=$IFS
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189 # Some sh's can't handle IFS=/ for some reason.
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190 IFS='%'
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191 set - `echo "$dstdir" | sed -e 's@/@%@g' -e 's@^%@/@'`
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192 IFS=$oIFS
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193
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194 pathcomp=''
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195
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196 while [ $# -ne 0 ] ; do
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197 pathcomp=$pathcomp$1
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198 shift
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199
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200 if [ ! -d "$pathcomp" ] ;
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201 then
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202 $mkdirprog "$pathcomp"
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203 else
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204 :
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205 fi
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206
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207 pathcomp=$pathcomp/
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208 done
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209 fi
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210
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211 if [ x"$dir_arg" != x ]
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212 then
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213 $doit $instcmd "$dst" &&
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214
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215 if [ x"$chowncmd" != x ]; then $doit $chowncmd "$dst"; else : ; fi &&
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216 if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd "$dst"; else : ; fi &&
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217 if [ x"$stripcmd" != x ]; then $doit $stripcmd "$dst"; else : ; fi &&
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218 if [ x"$chmodcmd" != x ]; then $doit $chmodcmd "$dst"; else : ; fi
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219 else
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220
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221 # If we're going to rename the final executable, determine the name now.
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222
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223 if [ x"$transformarg" = x ]
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224 then
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225 dstfile=`basename "$dst"`
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226 else
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227 dstfile=`basename "$dst" $transformbasename |
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228 sed $transformarg`$transformbasename
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229 fi
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230
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231 # don't allow the sed command to completely eliminate the filename
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232
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233 if [ x"$dstfile" = x ]
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234 then
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235 dstfile=`basename "$dst"`
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236 else
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237 :
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diff changeset
238 fi
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239
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240 # Make a couple of temp file names in the proper directory.
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241
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242 dsttmp=$dstdir/#inst.$$#
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243 rmtmp=$dstdir/#rm.$$#
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244
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245 # Trap to clean up temp files at exit.
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246
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247 trap 'status=$?; rm -f "$dsttmp" "$rmtmp" && exit $status' 0
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248 trap '(exit $?); exit' 1 2 13 15
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249
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250 # Move or copy the file name to the temp name
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251
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252 $doit $instcmd "$src" "$dsttmp" &&
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253
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254 # and set any options; do chmod last to preserve setuid bits
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255
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256 # If any of these fail, we abort the whole thing. If we want to
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257 # ignore errors from any of these, just make sure not to ignore
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258 # errors from the above "$doit $instcmd $src $dsttmp" command.
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259
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260 if [ x"$chowncmd" != x ]; then $doit $chowncmd "$dsttmp"; else :;fi &&
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261 if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd "$dsttmp"; else :;fi &&
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262 if [ x"$stripcmd" != x ]; then $doit $stripcmd "$dsttmp"; else :;fi &&
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263 if [ x"$chmodcmd" != x ]; then $doit $chmodcmd "$dsttmp"; else :;fi &&
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264
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265 # Now remove or move aside any old file at destination location. We try this
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266 # two ways since rm can't unlink itself on some systems and the destination
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267 # file might be busy for other reasons. In this case, the final cleanup
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268 # might fail but the new file should still install successfully.
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269
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270 {
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271 if [ -f "$dstdir/$dstfile" ]
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272 then
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273 $doit $rmcmd -f "$dstdir/$dstfile" 2>/dev/null ||
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274 $doit $mvcmd -f "$dstdir/$dstfile" "$rmtmp" 2>/dev/null ||
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275 {
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276 echo "$0: cannot unlink or rename $dstdir/$dstfile" >&2
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277 (exit 1); exit
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278 }
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279 else
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280 :
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281 fi
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282 } &&
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283
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284 # Now rename the file to the real destination.
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285
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286 $doit $mvcmd "$dsttmp" "$dstdir/$dstfile"
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287
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288 fi &&
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289
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290 # The final little trick to "correctly" pass the exit status to the exit trap.
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291
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292 {
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293 (exit 0); exit
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294 }