build-aux/install-sh

   1 #!/bin/sh
   2 # install - install a program, script, or datafile
   3
   4 scriptversion=2017-09-23.17; # UTC
   5
   6 # This originates from X11R5 (mit/util/scripts/install.sh), which was
   7 # later released in X11R6 (xc/config/util/install.sh) with the
   8 # following copyright and license.
   9 #
  10 # Copyright (C) 1994 X Consortium
  11 #
  12 # Permission is hereby granted, free of charge, to any person obtaining a copy
  13 # of this software and associated documentation files (the "Software"), to
  14 # deal in the Software without restriction, including without limitation the
  15 # rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
  16 # sell copies of the Software, and to permit persons to whom the Software is
  17 # furnished to do so, subject to the following conditions:
  18 #
  19 # The above copyright notice and this permission notice shall be included in
  20 # all copies or substantial portions of the Software.
  21 #
  22 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  23 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  24 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
  25 # X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  26 # AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC-
  27 # TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  28 #
  29 # Except as contained in this notice, the name of the X Consortium shall not
  30 # be used in advertising or otherwise to promote the sale, use or other deal-
  31 # ings in this Software without prior written authorization from the X Consor-
  32 # tium.
  33 #
  34 #
  35 # FSF changes to this file are in the public domain.
  36 #
  37 # Calling this script install-sh is preferred over install.sh, to prevent
  38 # 'make' implicit rules from creating a file called install from it
  39 # when there is no Makefile.
  40 #
  41 # This script is compatible with the BSD install script, but was written
  42 # from scratch.
  43
  44 tab='   '
  45 nl='
  46 '
  47 IFS=" $tab$nl"
  48
  49 # Set DOITPROG to "echo" to test this script.
  50
  51 doit=${DOITPROG-}
  52 doit_exec=${doit:-exec}
  53
  54 # Put in absolute file names if you don't have them in your path;
  55 # or use environment vars.
  56
  57 chgrpprog=${CHGRPPROG-chgrp}
  58 chmodprog=${CHMODPROG-chmod}
  59 chownprog=${CHOWNPROG-chown}
  60 cmpprog=${CMPPROG-cmp}
  61 cpprog=${CPPROG-cp}
  62 mkdirprog=${MKDIRPROG-mkdir}
  63 mvprog=${MVPROG-mv}
  64 rmprog=${RMPROG-rm}
  65 stripprog=${STRIPPROG-strip}
  66
  67 posix_mkdir=
  68
  69 # Desired mode of installed file.
  70 mode=0755
  71
  72 chgrpcmd=
  73 chmodcmd=$chmodprog
  74 chowncmd=
  75 mvcmd=$mvprog
  76 rmcmd="$rmprog -f"
  77 stripcmd=
  78
  79 src=
  80 dst=
  81 dir_arg=
  82 dst_arg=
  83
  84 copy_on_change=false
  85 is_target_a_directory=possibly
  86
  87 usage="\
  88 Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE
  89    or: $0 [OPTION]... SRCFILES... DIRECTORY
  90    or: $0 [OPTION]... -t DIRECTORY SRCFILES...
  91    or: $0 [OPTION]... -d DIRECTORIES...
  92
  93 In the 1st form, copy SRCFILE to DSTFILE.
  94 In the 2nd and 3rd, copy all SRCFILES to DIRECTORY.
  95 In the 4th, create DIRECTORIES.
  96
  97 Options:
  98      --help     display this help and exit.
  99      --version  display version info and exit.
 100
 101   -c            (ignored)
 102   -C            install only if different (preserve the last data modification time)
 103   -d            create directories instead of installing files.
 104   -g GROUP      $chgrpprog installed files to GROUP.
 105   -m MODE       $chmodprog installed files to MODE.
 106   -o USER       $chownprog installed files to USER.
 107   -s            $stripprog installed files.
 108   -t DIRECTORY  install into DIRECTORY.
 109   -T            report an error if DSTFILE is a directory.
 110
 111 Environment variables override the default commands:
 112   CHGRPPROG CHMODPROG CHOWNPROG CMPPROG CPPROG MKDIRPROG MVPROG
 113   RMPROG STRIPPROG
 114 "
 115
 116 while test $# -ne 0; do
 117   case $1 in
 118     -c) ;;
 119
 120     -C) copy_on_change=true;;
 121
 122     -d) dir_arg=true;;
 123
 124     -g) chgrpcmd="$chgrpprog $2"
 125         shift;;
 126
 127     --help) echo "$usage"; exit $?;;
 128
 129     -m) mode=$2
 130         case $mode in
 131           *' '* | *"$tab"* | *"$nl"* | *'*'* | *'?'* | *'['*)
 132             echo "$0: invalid mode: $mode" >&2
 133             exit 1;;
 134         esac
 135         shift;;
 136
 137     -o) chowncmd="$chownprog $2"
 138         shift;;
 139
 140     -s) stripcmd=$stripprog;;
 141
 142     -t)
 143         is_target_a_directory=always
 144         dst_arg=$2
 145         # Protect names problematic for 'test' and other utilities.
 146         case $dst_arg in
 147           -* | [=\(\)!]) dst_arg=./$dst_arg;;
 148         esac
 149         shift;;
 150
 151     -T) is_target_a_directory=never;;
 152
 153     --version) echo "$0 $scriptversion"; exit $?;;
 154
 155     --) shift
 156         break;;
 157
 158     -*) echo "$0: invalid option: $1" >&2
 159         exit 1;;
 160
 161     *)  break;;
 162   esac
 163   shift
 164 done
 165
 166 # We allow the use of options -d and -T together, by making -d
 167 # take the precedence; this is for compatibility with GNU install.
 168
 169 if test -n "$dir_arg"; then
 170   if test -n "$dst_arg"; then
 171     echo "$0: target directory not allowed when installing a directory." >&2
 172     exit 1
 173   fi
 174 fi
 175
 176 if test $# -ne 0 && test -z "$dir_arg$dst_arg"; then
 177   # When -d is used, all remaining arguments are directories to create.
 178   # When -t is used, the destination is already specified.
 179   # Otherwise, the last argument is the destination.  Remove it from $@.
 180   for arg
 181   do
 182     if test -n "$dst_arg"; then
 183       # $@ is not empty: it contains at least $arg.
 184       set fnord "$@" "$dst_arg"
 185       shift # fnord
 186     fi
 187     shift # arg
 188     dst_arg=$arg
 189     # Protect names problematic for 'test' and other utilities.
 190     case $dst_arg in
 191       -* | [=\(\)!]) dst_arg=./$dst_arg;;
 192     esac
 193   done
 194 fi
 195
 196 if test $# -eq 0; then
 197   if test -z "$dir_arg"; then
 198     echo "$0: no input file specified." >&2
 199     exit 1
 200   fi
 201   # It's OK to call 'install-sh -d' without argument.
 202   # This can happen when creating conditional directories.
 203   exit 0
 204 fi
 205
 206 if test -z "$dir_arg"; then
 207   if test $# -gt 1 || test "$is_target_a_directory" = always; then
 208     if test ! -d "$dst_arg"; then
 209       echo "$0: $dst_arg: Is not a directory." >&2
 210       exit 1
 211     fi
 212   fi
 213 fi
 214
 215 if test -z "$dir_arg"; then
 216   do_exit='(exit $ret); exit $ret'
 217   trap "ret=129; $do_exit" 1
 218   trap "ret=130; $do_exit" 2
 219   trap "ret=141; $do_exit" 13
 220   trap "ret=143; $do_exit" 15
 221
 222   # Set umask so as not to create temps with too-generous modes.
 223   # However, 'strip' requires both read and write access to temps.
 224   case $mode in
 225     # Optimize common cases.
 226     *644) cp_umask=133;;
 227     *755) cp_umask=22;;
 228
 229     *[0-7])
 230       if test -z "$stripcmd"; then
 231         u_plus_rw=
 232       else
 233         u_plus_rw='% 200'
 234       fi
 235       cp_umask=`expr '(' 777 - $mode % 1000 ')' $u_plus_rw`;;
 236     *)
 237       if test -z "$stripcmd"; then
 238         u_plus_rw=
 239       else
 240         u_plus_rw=,u+rw
 241       fi
 242       cp_umask=$mode$u_plus_rw;;
 243   esac
 244 fi
 245
 246 for src
 247 do
 248   # Protect names problematic for 'test' and other utilities.
 249   case $src in
 250     -* | [=\(\)!]) src=./$src;;
 251   esac
 252
 253   if test -n "$dir_arg"; then
 254     dst=$src
 255     dstdir=$dst
 256     test -d "$dstdir"
 257     dstdir_status=$?
 258   else
 259
 260     # Waiting for this to be detected by the "$cpprog $src $dsttmp" command
 261     # might cause directories to be created, which would be especially bad
 262     # if $src (and thus $dsttmp) contains '*'.
 263     if test ! -f "$src" && test ! -d "$src"; then
 264       echo "$0: $src does not exist." >&2
 265       exit 1
 266     fi
 267
 268     if test -z "$dst_arg"; then
 269       echo "$0: no destination specified." >&2
 270       exit 1
 271     fi
 272     dst=$dst_arg
 273
 274     # If destination is a directory, append the input filename.
 275     if test -d "$dst"; then
 276       if test "$is_target_a_directory" = never; then
 277         echo "$0: $dst_arg: Is a directory" >&2
 278         exit 1
 279       fi
 280       dstdir=$dst
 281       dstbase=`basename "$src"`
 282       case $dst in
 283         */) dst=$dst$dstbase;;
 284         *)  dst=$dst/$dstbase;;
 285       esac
 286       dstdir_status=0
 287     else
 288       dstdir=`dirname "$dst"`
 289       test -d "$dstdir"
 290       dstdir_status=$?
 291     fi
 292   fi
 293
 294   case $dstdir in
 295     */) dstdirslash=$dstdir;;
 296     *)  dstdirslash=$dstdir/;;
 297   esac
 298
 299   obsolete_mkdir_used=false
 300
 301   if test $dstdir_status != 0; then
 302     case $posix_mkdir in
 303       '')
 304         # Create intermediate dirs using mode 755 as modified by the umask.
 305         # This is like FreeBSD 'install' as of 1997-10-28.
 306         umask=`umask`
 307         case $stripcmd.$umask in
 308           # Optimize common cases.
 309           *[2367][2367]) mkdir_umask=$umask;;
 310           .*0[02][02] | .[02][02] | .[02]) mkdir_umask=22;;
 311
 312           *[0-7])
 313             mkdir_umask=`expr $umask + 22 \
 314               - $umask % 100 % 40 + $umask % 20 \
 315               - $umask % 10 % 4 + $umask % 2
 316             `;;
 317           *) mkdir_umask=$umask,go-w;;
 318         esac
 319
 320         # With -d, create the new directory with the user-specified mode.
 321         # Otherwise, rely on $mkdir_umask.
 322         if test -n "$dir_arg"; then
 323           mkdir_mode=-m$mode
 324         else
 325           mkdir_mode=
 326         fi
 327
 328         posix_mkdir=false
 329         case $umask in
 330           *[123567][0-7][0-7])
 331             # POSIX mkdir -p sets u+wx bits regardless of umask, which
 332             # is incompatible with FreeBSD 'install' when (umask & 300) != 0.
 333             ;;
 334           *)
 335             tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$
 336             trap 'ret=$?; rmdir "$tmpdir/d" "$tmpdir" 2>/dev/null; exit $ret' 0
 337
 338             if (umask $mkdir_umask &&
 339                 exec $mkdirprog $mkdir_mode -p -- "$tmpdir/d") >/dev/null 2>&1
 340             then
 341               if test -z "$dir_arg" || {
 342                    # Check for POSIX incompatibilities with -m.
 343                    # HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
 344                    # other-writable bit of parent directory when it shouldn't.
 345                    # FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
 346                    ls_ld_tmpdir=`ls -ld "$tmpdir"`
 347                    case $ls_ld_tmpdir in
 348                      d????-?r-*) different_mode=700;;
 349                      d????-?--*) different_mode=755;;
 350                      *) false;;
 351                    esac &&
 352                    $mkdirprog -m$different_mode -p -- "$tmpdir" && {
 353                      ls_ld_tmpdir_1=`ls -ld "$tmpdir"`
 354                      test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1"
 355                    }
 356                  }
 357               then posix_mkdir=:
 358               fi
 359               rmdir "$tmpdir/d" "$tmpdir"
 360             else
 361               # Remove any dirs left behind by ancient mkdir implementations.
 362               rmdir ./$mkdir_mode ./-p ./-- 2>/dev/null
 363             fi
 364             trap '' 0;;
 365         esac;;
 366     esac
 367
 368     if
 369       $posix_mkdir && (
 370         umask $mkdir_umask &&
 371         $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir"
 372       )
 373     then :
 374     else
 375
 376       # The umask is ridiculous, or mkdir does not conform to POSIX,
 377       # or it failed possibly due to a race condition.  Create the
 378       # directory the slow way, step by step, checking for races as we go.
 379
 380       case $dstdir in
 381         /*) prefix='/';;
 382         [-=\(\)!]*) prefix='./';;
 383         *)  prefix='';;
 384       esac
 385
 386       oIFS=$IFS
 387       IFS=/
 388       set -f
 389       set fnord $dstdir
 390       shift
 391       set +f
 392       IFS=$oIFS
 393
 394       prefixes=
 395
 396       for d
 397       do
 398         test X"$d" = X && continue
 399
 400         prefix=$prefix$d
 401         if test -d "$prefix"; then
 402           prefixes=
 403         else
 404           if $posix_mkdir; then
 405             (umask=$mkdir_umask &&
 406              $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir") && break
 407             # Don't fail if two instances are running concurrently.
 408             test -d "$prefix" || exit 1
 409           else
 410             case $prefix in
 411               *\'*) qprefix=`echo "$prefix" | sed "s/'/'\\\\\\\\''/g"`;;
 412               *) qprefix=$prefix;;
 413             esac
 414             prefixes="$prefixes '$qprefix'"
 415           fi
 416         fi
 417         prefix=$prefix/
 418       done
 419
 420       if test -n "$prefixes"; then
 421         # Don't fail if two instances are running concurrently.
 422         (umask $mkdir_umask &&
 423          eval "\$doit_exec \$mkdirprog $prefixes") ||
 424           test -d "$dstdir" || exit 1
 425         obsolete_mkdir_used=true
 426       fi
 427     fi
 428   fi
 429
 430   if test -n "$dir_arg"; then
 431     { test -z "$chowncmd" || $doit $chowncmd "$dst"; } &&
 432     { test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } &&
 433     { test "$obsolete_mkdir_used$chowncmd$chgrpcmd" = false ||
 434       test -z "$chmodcmd" || $doit $chmodcmd $mode "$dst"; } || exit 1
 435   else
 436
 437     # Make a couple of temp file names in the proper directory.
 438     dsttmp=${dstdirslash}_inst.$$_
 439     rmtmp=${dstdirslash}_rm.$$_
 440
 441     # Trap to clean up those temp files at exit.
 442     trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0
 443
 444     # Copy the file name to the temp name.
 445     (umask $cp_umask && $doit_exec $cpprog "$src" "$dsttmp") &&
 446
 447     # and set any options; do chmod last to preserve setuid bits.
 448     #
 449     # If any of these fail, we abort the whole thing.  If we want to
 450     # ignore errors from any of these, just make sure not to ignore
 451     # errors from the above "$doit $cpprog $src $dsttmp" command.
 452     #
 453     { test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } &&
 454     { test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } &&
 455     { test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } &&
 456     { test -z "$chmodcmd" || $doit $chmodcmd $mode "$dsttmp"; } &&
 457
 458     # If -C, don't bother to copy if it wouldn't change the file.
 459     if $copy_on_change &&
 460        old=`LC_ALL=C ls -dlL "$dst"     2>/dev/null` &&
 461        new=`LC_ALL=C ls -dlL "$dsttmp"  2>/dev/null` &&
 462        set -f &&
 463        set X $old && old=:$2:$4:$5:$6 &&
 464        set X $new && new=:$2:$4:$5:$6 &&
 465        set +f &&
 466        test "$old" = "$new" &&
 467        $cmpprog "$dst" "$dsttmp" >/dev/null 2>&1
 468     then
 469       rm -f "$dsttmp"
 470     else
 471       # Rename the file to the real destination.
 472       $doit $mvcmd -f "$dsttmp" "$dst" 2>/dev/null ||
 473
 474       # The rename failed, perhaps because mv can't rename something else
 475       # to itself, or perhaps because mv is so ancient that it does not
 476       # support -f.
 477       {
 478         # Now remove or move aside any old file at destination location.
 479         # We try this two ways since rm can't unlink itself on some
 480         # systems and the destination file might be busy for other
 481         # reasons.  In this case, the final cleanup might fail but the new
 482         # file should still install successfully.
 483         {
 484           test ! -f "$dst" ||
 485           $doit $rmcmd -f "$dst" 2>/dev/null ||
 486           { $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null &&
 487             { $doit $rmcmd -f "$rmtmp" 2>/dev/null; :; }
 488           } ||
 489           { echo "$0: cannot unlink or rename $dst" >&2
 490             (exit 1); exit 1
 491           }
 492         } &&
 493
 494         # Now rename the file to the real destination.
 495         $doit $mvcmd "$dsttmp" "$dst"
 496       }
 497     fi || exit 1
 498
 499     trap '' 0
 500   fi
 501 done
 502
 503 # Local variables:
 504 # eval: (add-hook 'write-file-hooks 'time-stamp)
 505 # time-stamp-start: "scriptversion="
 506 # time-stamp-format: "%:y-%02m-%02d.%02H"
 507 # time-stamp-time-zone: "UTC0"
 508 # time-stamp-end: "; # UTC"
 509 # End: