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authorDarren Tucker <dtucker@zip.com.au>2017-12-01 17:07:08 +1100
committerDarren Tucker <dtucker@zip.com.au>2017-12-01 17:07:08 +1100
commit3058dd78d2e43ed0f82ad8eab8bb04b043a72023 (patch)
treea758c87b665223abcb71d5ea13c34c244b67ec97 /install-sh
parent79226e5413c5b0fda3511351a8511ff457e306d8 (diff)
Pull in newer install-sh from autoconf-2.69.
Suggested by eb at emlix.com
Diffstat (limited to 'install-sh')
-rwxr-xr-xinstall-sh682
1 files changed, 479 insertions, 203 deletions
diff --git a/install-sh b/install-sh
index 220abbf61..377bb8687 100755
--- a/install-sh
+++ b/install-sh
@@ -1,251 +1,527 @@
1#!/bin/sh 1#!/bin/sh
2#
3# install - install a program, script, or datafile 2# install - install a program, script, or datafile
4# This comes from X11R5 (mit/util/scripts/install.sh). 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.
5# 28#
6# Copyright 1991 by the Massachusetts Institute of Technology 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.
7# 33#
8# Permission to use, copy, modify, distribute, and sell this software and its 34#
9# documentation for any purpose is hereby granted without fee, provided that 35# FSF changes to this file are in the public domain.
10# the above copyright notice appear in all copies and that both that
11# copyright notice and this permission notice appear in supporting
12# documentation, and that the name of M.I.T. not be used in advertising or
13# publicity pertaining to distribution of the software without specific,
14# written prior permission. M.I.T. makes no representations about the
15# suitability of this software for any purpose. It is provided "as is"
16# without express or implied warranty.
17# 36#
18# Calling this script install-sh is preferred over install.sh, to prevent 37# Calling this script install-sh is preferred over install.sh, to prevent
19# `make' implicit rules from creating a file called install from it 38# 'make' implicit rules from creating a file called install from it
20# when there is no Makefile. 39# when there is no Makefile.
21# 40#
22# This script is compatible with the BSD install script, but was written 41# This script is compatible with the BSD install script, but was written
23# from scratch. It can only install one file at a time, a restriction 42# from scratch.
24# shared with many OS's install programs.
25 43
44nl='
45'
46IFS=" "" $nl"
26 47
27# set DOITPROG to echo to test this script 48# set DOITPROG to echo to test this script
28 49
29# Don't use :- since 4.3BSD and earlier shells don't like it. 50# Don't use :- since 4.3BSD and earlier shells don't like it.
30doit="${DOITPROG-}" 51doit=${DOITPROG-}
31 52if test -z "$doit"; then
32 53 doit_exec=exec
33# put in absolute paths if you don't have them in your path; or use env. vars.
34
35mvprog="${MVPROG-mv}"
36cpprog="${CPPROG-cp}"
37chmodprog="${CHMODPROG-chmod}"
38chownprog="${CHOWNPROG-chown}"
39chgrpprog="${CHGRPPROG-chgrp}"
40stripprog="${STRIPPROG-strip}"
41rmprog="${RMPROG-rm}"
42mkdirprog="${MKDIRPROG-mkdir}"
43
44transformbasename=""
45transform_arg=""
46instcmd="$mvprog"
47chmodcmd="$chmodprog 0755"
48chowncmd=""
49chgrpcmd=""
50stripcmd=""
51rmcmd="$rmprog -f"
52mvcmd="$mvprog"
53src=""
54dst=""
55dir_arg=""
56
57while [ x"$1" != x ]; do
58 case $1 in
59 -c) instcmd="$cpprog"
60 shift
61 continue;;
62
63 -d) dir_arg=true
64 shift
65 continue;;
66
67 -m) chmodcmd="$chmodprog $2"
68 shift
69 shift
70 continue;;
71
72 -o) chowncmd="$chownprog $2"
73 shift
74 shift
75 continue;;
76
77 -g) chgrpcmd="$chgrpprog $2"
78 shift
79 shift
80 continue;;
81
82 -s) stripcmd="$stripprog"
83 shift
84 continue;;
85
86 -t=*) transformarg=`echo $1 | sed 's/-t=//'`
87 shift
88 continue;;
89
90 -b=*) transformbasename=`echo $1 | sed 's/-b=//'`
91 shift
92 continue;;
93
94 *) if [ x"$src" = x ]
95 then
96 src=$1
97 else
98 # this colon is to work around a 386BSD /bin/sh bug
99 :
100 dst=$1
101 fi
102 shift
103 continue;;
104 esac
105done
106
107if [ x"$src" = x ]
108then
109 echo "install: no input file specified"
110 exit 1
111else 54else
112 true 55 doit_exec=$doit
113fi 56fi
114 57
115if [ x"$dir_arg" != x ]; then 58# Put in absolute file names if you don't have them in your path;
116 dst=$src 59# or use environment vars.
117 src="" 60
118 61chgrpprog=${CHGRPPROG-chgrp}
119 if [ -d $dst ]; then 62chmodprog=${CHMODPROG-chmod}
120 instcmd=: 63chownprog=${CHOWNPROG-chown}
121 chmodcmd="" 64cmpprog=${CMPPROG-cmp}
122 else 65cpprog=${CPPROG-cp}
123 instcmd=mkdir 66mkdirprog=${MKDIRPROG-mkdir}
124 fi 67mvprog=${MVPROG-mv}
125else 68rmprog=${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'
126 81
127# Waiting for this to be detected by the "$instcmd $src $dsttmp" command 82posix_mkdir=
128# might cause directories to be created, which would be especially bad
129# if $src (and thus $dsttmp) contains '*'.
130 83
131 if [ -f $src -o -d $src ] 84# Desired mode of installed file.
132 then 85mode=0755
133 true
134 else
135 echo "install: $src does not exist"
136 exit 1
137 fi
138
139 if [ x"$dst" = x ]
140 then
141 echo "install: no destination specified"
142 exit 1
143 else
144 true
145 fi
146 86
147# If destination is a directory, append the input filename; if your system 87chgrpcmd=
148# does not like double slashes in filenames, you may need to add some logic 88chmodcmd=$chmodprog
89chowncmd=
90mvcmd=$mvprog
91rmcmd="$rmprog -f"
92stripcmd=
149 93
150 if [ -d $dst ] 94src=
151 then 95dst=
152 dst="$dst"/`basename $src` 96dir_arg=
153 else 97dst_arg=
154 true
155 fi
156fi
157 98
158## this sed command emulates the dirname command 99copy_on_change=false
159dstdir=`echo $dst | sed -e 's,[^/]*$,,;s,/$,,;s,^$,.,'` 100no_target_directory=
160 101
161# Make sure that the destination directory exists. 102usage="\
162# this part is taken from Noah Friedman's mkinstalldirs script 103Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE
104 or: $0 [OPTION]... SRCFILES... DIRECTORY
105 or: $0 [OPTION]... -t DIRECTORY SRCFILES...
106 or: $0 [OPTION]... -d DIRECTORIES...
163 107
164# Skip lots of stat calls in the usual case. 108In the 1st form, copy SRCFILE to DSTFILE.
165if [ ! -d "$dstdir" ]; then 109In the 2nd and 3rd, copy all SRCFILES to DIRECTORY.
166defaultIFS=' 110In the 4th, create DIRECTORIES.
167'
168IFS="${IFS-${defaultIFS}}"
169 111
170oIFS="${IFS}" 112Options:
171# Some sh's can't handle IFS=/ for some reason. 113 --help display this help and exit.
172IFS='%' 114 --version display version info and exit.
173set - `echo ${dstdir} | sed -e 's@/@%@g' -e 's@^%@/@'`
174IFS="${oIFS}"
175 115
176pathcomp='' 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.
177 125
178while [ $# -ne 0 ] ; do 126Environment variables override the default commands:
179 pathcomp="${pathcomp}${1}" 127 CHGRPPROG CHMODPROG CHOWNPROG CMPPROG CPPROG MKDIRPROG MVPROG
180 shift 128 RMPROG STRIPPROG
129"
181 130
182 if [ ! -d "${pathcomp}" ] ; 131while test $# -ne 0; do
183 then 132 case $1 in
184 $mkdirprog "${pathcomp}" 133 -c) ;;
185 else
186 true
187 fi
188 134
189 pathcomp="${pathcomp}/" 135 -C) copy_on_change=true;;
190done
191fi
192 136
193if [ x"$dir_arg" != x ] 137 -d) dir_arg=true;;
194then
195 $doit $instcmd $dst &&
196 138
197 if [ x"$chowncmd" != x ]; then $doit $chowncmd $dst; else true ; fi && 139 -g) chgrpcmd="$chgrpprog $2"
198 if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dst; else true ; fi && 140 shift;;
199 if [ x"$stripcmd" != x ]; then $doit $stripcmd $dst; else true ; fi &&
200 if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dst; else true ; fi
201else
202 141
203# If we're going to rename the final executable, determine the name now. 142 --help) echo "$usage"; exit $?;;
204 143
205 if [ x"$transformarg" = x ] 144 -m) mode=$2
206 then 145 case $mode in
207 dstfile=`basename $dst` 146 *' '* | *' '* | *'
208 else 147'* | *'*'* | *'?'* | *'['*)
209 dstfile=`basename $dst $transformbasename | 148 echo "$0: invalid mode: $mode" >&2
210 sed $transformarg`$transformbasename 149 exit 1;;
211 fi 150 esac
151 shift;;
212 152
213# don't allow the sed command to completely eliminate the filename 153 -o) chowncmd="$chownprog $2"
154 shift;;
214 155
215 if [ x"$dstfile" = x ] 156 -s) stripcmd=$stripprog;;
216 then
217 dstfile=`basename $dst`
218 else
219 true
220 fi
221 157
222# Make a temp file name in the proper directory. 158 -t) dst_arg=$2
159 # Protect names problematic for 'test' and other utilities.
160 case $dst_arg in
161 -* | [=\(\)!]) dst_arg=./$dst_arg;;
162 esac
163 shift;;
223 164
224 dsttmp=$dstdir/#inst.$$# 165 -T) no_target_directory=true;;
225 166
226# Move or copy the file name to the temp name 167 --version) echo "$0 $scriptversion"; exit $?;;
227 168
228 $doit $instcmd $src $dsttmp && 169 --) shift
170 break;;
229 171
230 trap "rm -f ${dsttmp}" 0 && 172 -*) echo "$0: invalid option: $1" >&2
173 exit 1;;
231 174
232# and set any options; do chmod last to preserve setuid bits 175 *) break;;
176 esac
177 shift
178done
233 179
234# If any of these fail, we abort the whole thing. If we want to 180if test $# -ne 0 && test -z "$dir_arg$dst_arg"; then
235# ignore errors from any of these, just make sure not to ignore 181 # When -d is used, all remaining arguments are directories to create.
236# errors from the above "$doit $instcmd $src $dsttmp" command. 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=./$dst_arg;;
196 esac
197 done
198fi
237 199
238 if [ x"$chowncmd" != x ]; then $doit $chowncmd $dsttmp; else true;fi && 200if test $# -eq 0; then
239 if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dsttmp; else true;fi && 201 if test -z "$dir_arg"; then
240 if [ x"$stripcmd" != x ]; then $doit $stripcmd $dsttmp; else true;fi && 202 echo "$0: no input file specified." >&2
241 if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dsttmp; else true;fi && 203 exit 1
204 fi
205 # It's OK to call 'install-sh -d' without argument.
206 # This can happen when creating conditional directories.
207 exit 0
208fi
242 209
243# Now rename the file to the real destination. 210if test -z "$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
244 240
245 $doit $rmcmd -f $dstdir/$dstfile && 241for src
246 $doit $mvcmd $dsttmp $dstdir/$dstfile 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
247 340
248fi && 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
249 380
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
250 520
251exit 0 521# 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: