build-aux/install-sh

   1 #!/bin/sh
   2 # install - install a program, script, or datafile
   3
   4 scriptversion=2020-11-14.01; # 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=${STRIPPROG-strip}
  66
  67 posix_mkdir=
  68
  69 # Desired mode of installed file.
  70 mode=0755
  71
  72 # Create dirs (including intermediate dirs) using mode 755.
  73 # This is like GNU 'install' as of coreutils 8.32 (2020).
  74 mkdir_umask=22
  75
  76 backupsuffix=
  77 chgrpcmd=
  78 chmodcmd=$chmodprog
  79 chowncmd=
  80 mvcmd=$mvprog
  81 rmcmd="$rmprog -f"
  82 stripcmd=
  83
  84 src=
  85 dst=
  86 dir_arg=
  87 dst_arg=
  88
  89 copy_on_change=false
  90 is_target_a_directory=possibly
  91
  92 usage="\
  93 Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE
  94    or: $0 [OPTION]... SRCFILES... DIRECTORY
  95    or: $0 [OPTION]... -t DIRECTORY SRCFILES...
  96    or: $0 [OPTION]... -d DIRECTORIES...
  97
  98 In the 1st form, copy SRCFILE to DSTFILE.
  99 In the 2nd and 3rd, copy all SRCFILES to DIRECTORY.
 100 In the 4th, create DIRECTORIES.
 101
 102 Options:
 103      --help     display this help and exit.
 104      --version  display version info and exit.
 105
 106   -c            (ignored)
 107   -C            install only if different (preserve data modification time)
 108   -d            create directories instead of installing files.
 109   -g GROUP      $chgrpprog installed files to GROUP.
 110   -m MODE       $chmodprog installed files to MODE.
 111   -o USER       $chownprog installed files to USER.
 112   -p            pass -p to $cpprog.
 113   -s            $stripprog installed files.
 114   -S SUFFIX     attempt to back up existing files, with suffix SUFFIX.
 115   -t DIRECTORY  install into DIRECTORY.
 116   -T            report an error if DSTFILE is a directory.
 117
 118 Environment variables override the default commands:
 119   CHGRPPROG CHMODPROG CHOWNPROG CMPPROG CPPROG MKDIRPROG MVPROG
 120   RMPROG STRIPPROG
 121
 122 By default, rm is invoked with -f; when overridden with RMPROG,
 123 it's up to you to specify -f if you want it.
 124
 125 If -S is not specified, no backups are attempted.
 126
 127 Email bug reports to bug-automake@gnu.org.
 128 Automake home page: https://www.gnu.org/software/automake/
 129 "
 130
 131 while test $# -ne 0; do
 132   case $1 in
 133     -c) ;;
 134
 135     -C) copy_on_change=true;;
 136
 137     -d) dir_arg=true;;
 138
 139     -g) chgrpcmd="$chgrpprog $2"
 140         shift;;
 141
 142     --help) echo "$usage"; exit $?;;
 143
 144     -m) mode=$2
 145         case $mode in
 146           *' '* | *"$tab"* | *"$nl"* | *'*'* | *'?'* | *'['*)
 147             echo "$0: invalid mode: $mode" >&2
 148             exit 1;;
 149         esac
 150         shift;;
 151
 152     -o) chowncmd="$chownprog $2"
 153         shift;;
 154
 155     -p) cpprog="$cpprog -p";;
 156
 157     -s) stripcmd=$stripprog;;
 158
 159     -S) backupsuffix="$2"
 160         shift;;
 161
 162     -t)
 163         is_target_a_directory=always
 164         dst_arg=$2
 165         # Protect names problematic for 'test' and other utilities.
 166         case $dst_arg in
 167           -* | [=\(\)!]) dst_arg=./$dst_arg;;
 168         esac
 169         shift;;
 170
 171     -T) is_target_a_directory=never;;
 172
 173     --version) echo "$0 $scriptversion"; exit $?;;
 174
 175     --) shift
 176         break;;
 177
 178     -*) echo "$0: invalid option: $1" >&2
 179         exit 1;;
 180
 181     *)  break;;
 182   esac
 183   shift
 184 done
 185
 186 # We allow the use of options -d and -T together, by making -d
 187 # take the precedence; this is for compatibility with GNU install.
 188
 189 if test -n "$dir_arg"; then
 190   if test -n "$dst_arg"; then
 191     echo "$0: target directory not allowed when installing a directory." >&2
 192     exit 1
 193   fi
 194 fi
 195
 196 if test $# -ne 0 && test -z "$dir_arg$dst_arg"; then
 197   # When -d is used, all remaining arguments are directories to create.
 198   # When -t is used, the destination is already specified.
 199   # Otherwise, the last argument is the destination.  Remove it from $@.
 200   for arg
 201   do
 202     if test -n "$dst_arg"; then
 203       # $@ is not empty: it contains at least $arg.
 204       set fnord "$@" "$dst_arg"
 205       shift # fnord
 206     fi
 207     shift # arg
 208     dst_arg=$arg
 209     # Protect names problematic for 'test' and other utilities.
 210     case $dst_arg in
 211       -* | [=\(\)!]) dst_arg=./$dst_arg;;
 212     esac
 213   done
 214 fi
 215
 216 if test $# -eq 0; then
 217   if test -z "$dir_arg"; then
 218     echo "$0: no input file specified." >&2
 219     exit 1
 220   fi
 221   # It's OK to call 'install-sh -d' without argument.
 222   # This can happen when creating conditional directories.
 223   exit 0
 224 fi
 225
 226 if test -z "$dir_arg"; then
 227   if test $# -gt 1 || test "$is_target_a_directory" = always; then
 228     if test ! -d "$dst_arg"; then
 229       echo "$0: $dst_arg: Is not a directory." >&2
 230       exit 1
 231     fi
 232   fi
 233 fi
 234
 235 if test -z "$dir_arg"; then
 236   do_exit='(exit $ret); exit $ret'
 237   trap "ret=129; $do_exit" 1
 238   trap "ret=130; $do_exit" 2
 239   trap "ret=141; $do_exit" 13
 240   trap "ret=143; $do_exit" 15
 241
 242   # Set umask so as not to create temps with too-generous modes.
 243   # However, 'strip' requires both read and write access to temps.
 244   case $mode in
 245     # Optimize common cases.
 246     *644) cp_umask=133;;
 247     *755) cp_umask=22;;
 248
 249     *[0-7])
 250       if test -z "$stripcmd"; then
 251         u_plus_rw=
 252       else
 253         u_plus_rw='% 200'
 254       fi
 255       cp_umask=`expr '(' 777 - $mode % 1000 ')' $u_plus_rw`;;
 256     *)
 257       if test -z "$stripcmd"; then
 258         u_plus_rw=
 259       else
 260         u_plus_rw=,u+rw
 261       fi
 262       cp_umask=$mode$u_plus_rw;;
 263   esac
 264 fi
 265
 266 for src
 267 do
 268   # Protect names problematic for 'test' and other utilities.
 269   case $src in
 270     -* | [=\(\)!]) src=./$src;;
 271   esac
 272
 273   if test -n "$dir_arg"; then
 274     dst=$src
 275     dstdir=$dst
 276     test -d "$dstdir"
 277     dstdir_status=$?
 278     # Don't chown directories that already exist.
 279     if test $dstdir_status = 0; then
 280       chowncmd=""
 281     fi
 282   else
 283
 284     # Waiting for this to be detected by the "$cpprog $src $dsttmp" command
 285     # might cause directories to be created, which would be especially bad
 286     # if $src (and thus $dsttmp) contains '*'.
 287     if test ! -f "$src" && test ! -d "$src"; then
 288       echo "$0: $src does not exist." >&2
 289       exit 1
 290     fi
 291
 292     if test -z "$dst_arg"; then
 293       echo "$0: no destination specified." >&2
 294       exit 1
 295     fi
 296     dst=$dst_arg
 297
 298     # If destination is a directory, append the input filename.
 299     if test -d "$dst"; then
 300       if test "$is_target_a_directory" = never; then
 301         echo "$0: $dst_arg: Is a directory" >&2
 302         exit 1
 303       fi
 304       dstdir=$dst
 305       dstbase=`basename "$src"`
 306       case $dst in
 307         */) dst=$dst$dstbase;;
 308         *)  dst=$dst/$dstbase;;
 309       esac
 310       dstdir_status=0
 311     else
 312       dstdir=`dirname "$dst"`
 313       test -d "$dstdir"
 314       dstdir_status=$?
 315     fi
 316   fi
 317
 318   case $dstdir in
 319     */) dstdirslash=$dstdir;;
 320     *)  dstdirslash=$dstdir/;;
 321   esac
 322
 323   obsolete_mkdir_used=false
 324
 325   if test $dstdir_status != 0; then
 326     case $posix_mkdir in
 327       '')
 328         # With -d, create the new directory with the user-specified mode.
 329         # Otherwise, rely on $mkdir_umask.
 330         if test -n "$dir_arg"; then
 331           mkdir_mode=-m$mode
 332         else
 333           mkdir_mode=
 334         fi
 335
 336         posix_mkdir=false
 337         # The $RANDOM variable is not portable (e.g., dash).  Use it
 338         # here however when possible just to lower collision chance.
 339         tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$
 340
 341         trap '
 342           ret=$?
 343           rmdir "$tmpdir/a/b" "$tmpdir/a" "$tmpdir" 2>/dev/null
 344           exit $ret
 345         ' 0
 346
 347         # Because "mkdir -p" follows existing symlinks and we likely work
 348         # directly in world-writeable /tmp, make sure that the '$tmpdir'
 349         # directory is successfully created first before we actually test
 350         # 'mkdir -p'.
 351         if (umask $mkdir_umask &&
 352             $mkdirprog $mkdir_mode "$tmpdir" &&
 353             exec $mkdirprog $mkdir_mode -p -- "$tmpdir/a/b") >/dev/null 2>&1
 354         then
 355           if test -z "$dir_arg" || {
 356                # Check for POSIX incompatibilities with -m.
 357                # HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
 358                # other-writable bit of parent directory when it shouldn't.
 359                # FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
 360                test_tmpdir="$tmpdir/a"
 361                ls_ld_tmpdir=`ls -ld "$test_tmpdir"`
 362                case $ls_ld_tmpdir in
 363                  d????-?r-*) different_mode=700;;
 364                  d????-?--*) different_mode=755;;
 365                  *) false;;
 366                esac &&
 367                $mkdirprog -m$different_mode -p -- "$test_tmpdir" && {
 368                  ls_ld_tmpdir_1=`ls -ld "$test_tmpdir"`
 369                  test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1"
 370                }
 371              }
 372           then posix_mkdir=:
 373           fi
 374           rmdir "$tmpdir/a/b" "$tmpdir/a" "$tmpdir"
 375         else
 376           # Remove any dirs left behind by ancient mkdir implementations.
 377           rmdir ./$mkdir_mode ./-p ./-- "$tmpdir" 2>/dev/null
 378         fi
 379         trap '' 0;;
 380     esac
 381
 382     if
 383       $posix_mkdir && (
 384         umask $mkdir_umask &&
 385         $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir"
 386       )
 387     then :
 388     else
 389
 390       # mkdir does not conform to POSIX,
 391       # or it failed possibly due to a race condition.  Create the
 392       # directory the slow way, step by step, checking for races as we go.
 393
 394       case $dstdir in
 395         /*) prefix='/';;
 396         [-=\(\)!]*) prefix='./';;
 397         *)  prefix='';;
 398       esac
 399
 400       oIFS=$IFS
 401       IFS=/
 402       set -f
 403       set fnord $dstdir
 404       shift
 405       set +f
 406       IFS=$oIFS
 407
 408       prefixes=
 409
 410       for d
 411       do
 412         test X"$d" = X && continue
 413
 414         prefix=$prefix$d
 415         if test -d "$prefix"; then
 416           prefixes=
 417         else
 418           if $posix_mkdir; then
 419             (umask $mkdir_umask &&
 420              $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir") && break
 421             # Don't fail if two instances are running concurrently.
 422             test -d "$prefix" || exit 1
 423           else
 424             case $prefix in
 425               *\'*) qprefix=`echo "$prefix" | sed "s/'/'\\\\\\\\''/g"`;;
 426               *) qprefix=$prefix;;
 427             esac
 428             prefixes="$prefixes '$qprefix'"
 429           fi
 430         fi
 431         prefix=$prefix/
 432       done
 433
 434       if test -n "$prefixes"; then
 435         # Don't fail if two instances are running concurrently.
 436         (umask $mkdir_umask &&
 437          eval "\$doit_exec \$mkdirprog $prefixes") ||
 438           test -d "$dstdir" || exit 1
 439         obsolete_mkdir_used=true
 440       fi
 441     fi
 442   fi
 443
 444   if test -n "$dir_arg"; then
 445     { test -z "$chowncmd" || $doit $chowncmd "$dst"; } &&
 446     { test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } &&
 447     { test "$obsolete_mkdir_used$chowncmd$chgrpcmd" = false ||
 448       test -z "$chmodcmd" || $doit $chmodcmd $mode "$dst"; } || exit 1
 449   else
 450
 451     # Make a couple of temp file names in the proper directory.
 452     dsttmp=${dstdirslash}_inst.$$_
 453     rmtmp=${dstdirslash}_rm.$$_
 454
 455     # Trap to clean up those temp files at exit.
 456     trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0
 457
 458     # Copy the file name to the temp name.
 459     (umask $cp_umask &&
 460      { test -z "$stripcmd" || {
 461          # Create $dsttmp read-write so that cp doesn't create it read-only,
 462          # which would cause strip to fail.
 463          if test -z "$doit"; then
 464            : >"$dsttmp" # No need to fork-exec 'touch'.
 465          else
 466            $doit touch "$dsttmp"
 467          fi
 468        }
 469      } &&
 470      $doit_exec $cpprog "$src" "$dsttmp") &&
 471
 472     # and set any options; do chmod last to preserve setuid bits.
 473     #
 474     # If any of these fail, we abort the whole thing.  If we want to
 475     # ignore errors from any of these, just make sure not to ignore
 476     # errors from the above "$doit $cpprog $src $dsttmp" command.
 477     #
 478     { test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } &&
 479     { test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } &&
 480     { test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } &&
 481     { test -z "$chmodcmd" || $doit $chmodcmd $mode "$dsttmp"; } &&
 482
 483     # If -C, don't bother to copy if it wouldn't change the file.
 484     if $copy_on_change &&
 485        old=`LC_ALL=C ls -dlL "$dst"     2>/dev/null` &&
 486        new=`LC_ALL=C ls -dlL "$dsttmp"  2>/dev/null` &&
 487        set -f &&
 488        set X $old && old=:$2:$4:$5:$6 &&
 489        set X $new && new=:$2:$4:$5:$6 &&
 490        set +f &&
 491        test "$old" = "$new" &&
 492        $cmpprog "$dst" "$dsttmp" >/dev/null 2>&1
 493     then
 494       rm -f "$dsttmp"
 495     else
 496       # If $backupsuffix is set, and the file being installed
 497       # already exists, attempt a backup.  Don't worry if it fails,
 498       # e.g., if mv doesn't support -f.
 499       if test -n "$backupsuffix" && test -f "$dst"; then
 500         $doit $mvcmd -f "$dst" "$dst$backupsuffix" 2>/dev/null
 501       fi
 502
 503       # Rename the file to the real destination.
 504       $doit $mvcmd -f "$dsttmp" "$dst" 2>/dev/null ||
 505
 506       # The rename failed, perhaps because mv can't rename something else
 507       # to itself, or perhaps because mv is so ancient that it does not
 508       # support -f.
 509       {
 510         # Now remove or move aside any old file at destination location.
 511         # We try this two ways since rm can't unlink itself on some
 512         # systems and the destination file might be busy for other
 513         # reasons.  In this case, the final cleanup might fail but the new
 514         # file should still install successfully.
 515         {
 516           test ! -f "$dst" ||
 517           $doit $rmcmd "$dst" 2>/dev/null ||
 518           { $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null &&
 519             { $doit $rmcmd "$rmtmp" 2>/dev/null; :; }
 520           } ||
 521           { echo "$0: cannot unlink or rename $dst" >&2
 522             (exit 1); exit 1
 523           }
 524         } &&
 525
 526         # Now rename the file to the real destination.
 527         $doit $mvcmd "$dsttmp" "$dst"
 528       }
 529     fi || exit 1
 530
 531     trap '' 0
 532   fi
 533 done
 534
 535 # Local variables:
 536 # eval: (add-hook 'before-save-hook 'time-stamp)
 537 # time-stamp-start: "scriptversion="
 538 # time-stamp-format: "%:y-%02m-%02d.%02H"
 539 # time-stamp-time-zone: "UTC0"
 540 # time-stamp-end: "; # UTC"
 541 # End: