xref: /openssh-portable/install-sh (revision 3058dd78)
1#!/bin/sh
2# install - install a program, script, or datafile
3
4scriptversion=2011-11-20.07; # 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
44nl='
45'
46IFS=" ""	$nl"
47
48# set DOITPROG to echo to test this script
49
50# Don't use :- since 4.3BSD and earlier shells don't like it.
51doit=${DOITPROG-}
52if test -z "$doit"; then
53  doit_exec=exec
54else
55  doit_exec=$doit
56fi
57
58# Put in absolute file names if you don't have them in your path;
59# or use environment vars.
60
61chgrpprog=${CHGRPPROG-chgrp}
62chmodprog=${CHMODPROG-chmod}
63chownprog=${CHOWNPROG-chown}
64cmpprog=${CMPPROG-cmp}
65cpprog=${CPPROG-cp}
66mkdirprog=${MKDIRPROG-mkdir}
67mvprog=${MVPROG-mv}
68rmprog=${RMPROG-rm}
69stripprog=${STRIPPROG-strip}
70
71posix_glob='?'
72initialize_posix_glob='
73  test "$posix_glob" != "?" || {
74    if (set -f) 2>/dev/null; then
75      posix_glob=
76    else
77      posix_glob=:
78    fi
79  }
80'
81
82posix_mkdir=
83
84# Desired mode of installed file.
85mode=0755
86
87chgrpcmd=
88chmodcmd=$chmodprog
89chowncmd=
90mvcmd=$mvprog
91rmcmd="$rmprog -f"
92stripcmd=
93
94src=
95dst=
96dir_arg=
97dst_arg=
98
99copy_on_change=false
100no_target_directory=
101
102usage="\
103Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE
104   or: $0 [OPTION]... SRCFILES... DIRECTORY
105   or: $0 [OPTION]... -t DIRECTORY SRCFILES...
106   or: $0 [OPTION]... -d DIRECTORIES...
107
108In the 1st form, copy SRCFILE to DSTFILE.
109In the 2nd and 3rd, copy all SRCFILES to DIRECTORY.
110In the 4th, create DIRECTORIES.
111
112Options:
113     --help     display this help and exit.
114     --version  display version info and exit.
115
116  -c            (ignored)
117  -C            install only if different (preserve the last data modification time)
118  -d            create directories instead of installing files.
119  -g GROUP      $chgrpprog installed files to GROUP.
120  -m MODE       $chmodprog installed files to MODE.
121  -o USER       $chownprog installed files to USER.
122  -s            $stripprog installed files.
123  -t DIRECTORY  install into DIRECTORY.
124  -T            report an error if DSTFILE is a directory.
125
126Environment variables override the default commands:
127  CHGRPPROG CHMODPROG CHOWNPROG CMPPROG CPPROG MKDIRPROG MVPROG
128  RMPROG STRIPPROG
129"
130
131while 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	  *' '* | *'	'* | *'
147'*	  | *'*'* | *'?'* | *'['*)
148	    echo "$0: invalid mode: $mode" >&2
149	    exit 1;;
150	esac
151	shift;;
152
153    -o) chowncmd="$chownprog $2"
154	shift;;
155
156    -s) stripcmd=$stripprog;;
157
158    -t) dst_arg=$2
159	# Protect names problematic for 'test' and other utilities.
160	case $dst_arg in
161	  -* | [=\(\)!]) dst_arg=./$dst_arg;;
162	esac
163	shift;;
164
165    -T) no_target_directory=true;;
166
167    --version) echo "$0 $scriptversion"; exit $?;;
168
169    --)	shift
170	break;;
171
172    -*)	echo "$0: invalid option: $1" >&2
173	exit 1;;
174
175    *)  break;;
176  esac
177  shift
178done
179
180if test $# -ne 0 && test -z "$dir_arg$dst_arg"; then
181  # When -d is used, all remaining arguments are directories to create.
182  # When -t is used, the destination is already specified.
183  # Otherwise, the last argument is the destination.  Remove it from $@.
184  for arg
185  do
186    if test -n "$dst_arg"; then
187      # $@ is not empty: it contains at least $arg.
188      set fnord "$@" "$dst_arg"
189      shift # fnord
190    fi
191    shift # arg
192    dst_arg=$arg
193    # Protect names problematic for 'test' and other utilities.
194    case $dst_arg in
195      -* | [=\(\)!]) dst_arg=./$dst_arg;;
196    esac
197  done
198fi
199
200if test $# -eq 0; then
201  if test -z "$dir_arg"; then
202    echo "$0: no input file specified." >&2
203    exit 1
204  fi
205  # It's OK to call 'install-sh -d' without argument.
206  # This can happen when creating conditional directories.
207  exit 0
208fi
209
210if test -z "$dir_arg"; then
211  do_exit='(exit $ret); exit $ret'
212  trap "ret=129; $do_exit" 1
213  trap "ret=130; $do_exit" 2
214  trap "ret=141; $do_exit" 13
215  trap "ret=143; $do_exit" 15
216
217  # Set umask so as not to create temps with too-generous modes.
218  # However, 'strip' requires both read and write access to temps.
219  case $mode in
220    # Optimize common cases.
221    *644) cp_umask=133;;
222    *755) cp_umask=22;;
223
224    *[0-7])
225      if test -z "$stripcmd"; then
226	u_plus_rw=
227      else
228	u_plus_rw='% 200'
229      fi
230      cp_umask=`expr '(' 777 - $mode % 1000 ')' $u_plus_rw`;;
231    *)
232      if test -z "$stripcmd"; then
233	u_plus_rw=
234      else
235	u_plus_rw=,u+rw
236      fi
237      cp_umask=$mode$u_plus_rw;;
238  esac
239fi
240
241for src
242do
243  # Protect names problematic for 'test' and other utilities.
244  case $src in
245    -* | [=\(\)!]) src=./$src;;
246  esac
247
248  if test -n "$dir_arg"; then
249    dst=$src
250    dstdir=$dst
251    test -d "$dstdir"
252    dstdir_status=$?
253  else
254
255    # Waiting for this to be detected by the "$cpprog $src $dsttmp" command
256    # might cause directories to be created, which would be especially bad
257    # if $src (and thus $dsttmp) contains '*'.
258    if test ! -f "$src" && test ! -d "$src"; then
259      echo "$0: $src does not exist." >&2
260      exit 1
261    fi
262
263    if test -z "$dst_arg"; then
264      echo "$0: no destination specified." >&2
265      exit 1
266    fi
267    dst=$dst_arg
268
269    # If destination is a directory, append the input filename; won't work
270    # if double slashes aren't ignored.
271    if test -d "$dst"; then
272      if test -n "$no_target_directory"; then
273	echo "$0: $dst_arg: Is a directory" >&2
274	exit 1
275      fi
276      dstdir=$dst
277      dst=$dstdir/`basename "$src"`
278      dstdir_status=0
279    else
280      # Prefer dirname, but fall back on a substitute if dirname fails.
281      dstdir=`
282	(dirname "$dst") 2>/dev/null ||
283	expr X"$dst" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
284	     X"$dst" : 'X\(//\)[^/]' \| \
285	     X"$dst" : 'X\(//\)$' \| \
286	     X"$dst" : 'X\(/\)' \| . 2>/dev/null ||
287	echo X"$dst" |
288	    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
289		   s//\1/
290		   q
291		 }
292		 /^X\(\/\/\)[^/].*/{
293		   s//\1/
294		   q
295		 }
296		 /^X\(\/\/\)$/{
297		   s//\1/
298		   q
299		 }
300		 /^X\(\/\).*/{
301		   s//\1/
302		   q
303		 }
304		 s/.*/./; q'
305      `
306
307      test -d "$dstdir"
308      dstdir_status=$?
309    fi
310  fi
311
312  obsolete_mkdir_used=false
313
314  if test $dstdir_status != 0; then
315    case $posix_mkdir in
316      '')
317	# Create intermediate dirs using mode 755 as modified by the umask.
318	# This is like FreeBSD 'install' as of 1997-10-28.
319	umask=`umask`
320	case $stripcmd.$umask in
321	  # Optimize common cases.
322	  *[2367][2367]) mkdir_umask=$umask;;
323	  .*0[02][02] | .[02][02] | .[02]) mkdir_umask=22;;
324
325	  *[0-7])
326	    mkdir_umask=`expr $umask + 22 \
327	      - $umask % 100 % 40 + $umask % 20 \
328	      - $umask % 10 % 4 + $umask % 2
329	    `;;
330	  *) mkdir_umask=$umask,go-w;;
331	esac
332
333	# With -d, create the new directory with the user-specified mode.
334	# Otherwise, rely on $mkdir_umask.
335	if test -n "$dir_arg"; then
336	  mkdir_mode=-m$mode
337	else
338	  mkdir_mode=
339	fi
340
341	posix_mkdir=false
342	case $umask in
343	  *[123567][0-7][0-7])
344	    # POSIX mkdir -p sets u+wx bits regardless of umask, which
345	    # is incompatible with FreeBSD 'install' when (umask & 300) != 0.
346	    ;;
347	  *)
348	    tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$
349	    trap 'ret=$?; rmdir "$tmpdir/d" "$tmpdir" 2>/dev/null; exit $ret' 0
350
351	    if (umask $mkdir_umask &&
352		exec $mkdirprog $mkdir_mode -p -- "$tmpdir/d") >/dev/null 2>&1
353	    then
354	      if test -z "$dir_arg" || {
355		   # Check for POSIX incompatibilities with -m.
356		   # HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
357		   # other-writable bit of parent directory when it shouldn't.
358		   # FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
359		   ls_ld_tmpdir=`ls -ld "$tmpdir"`
360		   case $ls_ld_tmpdir in
361		     d????-?r-*) different_mode=700;;
362		     d????-?--*) different_mode=755;;
363		     *) false;;
364		   esac &&
365		   $mkdirprog -m$different_mode -p -- "$tmpdir" && {
366		     ls_ld_tmpdir_1=`ls -ld "$tmpdir"`
367		     test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1"
368		   }
369		 }
370	      then posix_mkdir=:
371	      fi
372	      rmdir "$tmpdir/d" "$tmpdir"
373	    else
374	      # Remove any dirs left behind by ancient mkdir implementations.
375	      rmdir ./$mkdir_mode ./-p ./-- 2>/dev/null
376	    fi
377	    trap '' 0;;
378	esac;;
379    esac
380
381    if
382      $posix_mkdir && (
383	umask $mkdir_umask &&
384	$doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir"
385      )
386    then :
387    else
388
389      # The umask is ridiculous, or mkdir does not conform to POSIX,
390      # or it failed possibly due to a race condition.  Create the
391      # directory the slow way, step by step, checking for races as we go.
392
393      case $dstdir in
394	/*) prefix='/';;
395	[-=\(\)!]*) prefix='./';;
396	*)  prefix='';;
397      esac
398
399      eval "$initialize_posix_glob"
400
401      oIFS=$IFS
402      IFS=/
403      $posix_glob set -f
404      set fnord $dstdir
405      shift
406      $posix_glob set +f
407      IFS=$oIFS
408
409      prefixes=
410
411      for d
412      do
413	test X"$d" = X && continue
414
415	prefix=$prefix$d
416	if test -d "$prefix"; then
417	  prefixes=
418	else
419	  if $posix_mkdir; then
420	    (umask=$mkdir_umask &&
421	     $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir") && break
422	    # Don't fail if two instances are running concurrently.
423	    test -d "$prefix" || exit 1
424	  else
425	    case $prefix in
426	      *\'*) qprefix=`echo "$prefix" | sed "s/'/'\\\\\\\\''/g"`;;
427	      *) qprefix=$prefix;;
428	    esac
429	    prefixes="$prefixes '$qprefix'"
430	  fi
431	fi
432	prefix=$prefix/
433      done
434
435      if test -n "$prefixes"; then
436	# Don't fail if two instances are running concurrently.
437	(umask $mkdir_umask &&
438	 eval "\$doit_exec \$mkdirprog $prefixes") ||
439	  test -d "$dstdir" || exit 1
440	obsolete_mkdir_used=true
441      fi
442    fi
443  fi
444
445  if test -n "$dir_arg"; then
446    { test -z "$chowncmd" || $doit $chowncmd "$dst"; } &&
447    { test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } &&
448    { test "$obsolete_mkdir_used$chowncmd$chgrpcmd" = false ||
449      test -z "$chmodcmd" || $doit $chmodcmd $mode "$dst"; } || exit 1
450  else
451
452    # Make a couple of temp file names in the proper directory.
453    dsttmp=$dstdir/_inst.$$_
454    rmtmp=$dstdir/_rm.$$_
455
456    # Trap to clean up those temp files at exit.
457    trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0
458
459    # Copy the file name to the temp name.
460    (umask $cp_umask && $doit_exec $cpprog "$src" "$dsttmp") &&
461
462    # and set any options; do chmod last to preserve setuid bits.
463    #
464    # If any of these fail, we abort the whole thing.  If we want to
465    # ignore errors from any of these, just make sure not to ignore
466    # errors from the above "$doit $cpprog $src $dsttmp" command.
467    #
468    { test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } &&
469    { test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } &&
470    { test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } &&
471    { test -z "$chmodcmd" || $doit $chmodcmd $mode "$dsttmp"; } &&
472
473    # If -C, don't bother to copy if it wouldn't change the file.
474    if $copy_on_change &&
475       old=`LC_ALL=C ls -dlL "$dst"	2>/dev/null` &&
476       new=`LC_ALL=C ls -dlL "$dsttmp"	2>/dev/null` &&
477
478       eval "$initialize_posix_glob" &&
479       $posix_glob set -f &&
480       set X $old && old=:$2:$4:$5:$6 &&
481       set X $new && new=:$2:$4:$5:$6 &&
482       $posix_glob set +f &&
483
484       test "$old" = "$new" &&
485       $cmpprog "$dst" "$dsttmp" >/dev/null 2>&1
486    then
487      rm -f "$dsttmp"
488    else
489      # Rename the file to the real destination.
490      $doit $mvcmd -f "$dsttmp" "$dst" 2>/dev/null ||
491
492      # The rename failed, perhaps because mv can't rename something else
493      # to itself, or perhaps because mv is so ancient that it does not
494      # support -f.
495      {
496	# Now remove or move aside any old file at destination location.
497	# We try this two ways since rm can't unlink itself on some
498	# systems and the destination file might be busy for other
499	# reasons.  In this case, the final cleanup might fail but the new
500	# file should still install successfully.
501	{
502	  test ! -f "$dst" ||
503	  $doit $rmcmd -f "$dst" 2>/dev/null ||
504	  { $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null &&
505	    { $doit $rmcmd -f "$rmtmp" 2>/dev/null; :; }
506	  } ||
507	  { echo "$0: cannot unlink or rename $dst" >&2
508	    (exit 1); exit 1
509	  }
510	} &&
511
512	# Now rename the file to the real destination.
513	$doit $mvcmd "$dsttmp" "$dst"
514      }
515    fi || exit 1
516
517    trap '' 0
518  fi
519done
520
521# Local variables:
522# eval: (add-hook 'write-file-hooks 'time-stamp)
523# time-stamp-start: "scriptversion="
524# time-stamp-format: "%:y-%02m-%02d.%02H"
525# time-stamp-time-zone: "UTC"
526# time-stamp-end: "; # UTC"
527# End:
528