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Comparing Search/trunk/install-sh (file contents):
Revision 386 by douglas, 2008-08-23T02:30:47-07:00 vs.
Revision 387 by douglas, 2011-12-30T16:21:06-08:00

#	Line 1 | Line 1
1		#!/bin/sh
2		# install - install a program, script, or datafile
3
4	<	scriptversion=2004-04-01.17
4	>	scriptversion=2009-04-28.21; # 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
#	Line 39 | Line 39 | scriptversion=2004-04-01.17
39		# when there is no Makefile.
40		#
41		# This script is compatible with the BSD install script, but was written
42	<	# from scratch.  It can only install one file at a time, a restriction
43	<	# shared with many OS's install programs.
42	>	# from scratch.
43	>
44	>	nl='
45	>	'
46	>	IFS=" ""        $nl"
47
48		# set DOITPROG to echo to test this script
49
50		# Don't use :- since 4.3BSD and earlier shells don't like it.
51	<	doit="${DOITPROG-}"
51	>	doit=${DOITPROG-}
52	>	if test -z "$doit"; then
53	>	doit_exec=exec
54	>	else
55	>	doit_exec=$doit
56	>	fi
57
58	<	# put in absolute paths if you don't have them in your path; or use env. vars.
58	>	# Put in absolute file names if you don't have them in your path;
59	>	# or use environment vars.
60	>
61	>	chgrpprog=${CHGRPPROG-chgrp}
62	>	chmodprog=${CHMODPROG-chmod}
63	>	chownprog=${CHOWNPROG-chown}
64	>	cmpprog=${CMPPROG-cmp}
65	>	cpprog=${CPPROG-cp}
66	>	mkdirprog=${MKDIRPROG-mkdir}
67	>	mvprog=${MVPROG-mv}
68	>	rmprog=${RMPROG-rm}
69	>	stripprog=${STRIPPROG-strip}
70	>
71	>	posix_glob='?'
72	>	initialize_posix_glob='
73	>	test "$posix_glob" != "?" || {
74	>	if (set -f) 2>/dev/null; then
75	>	posix_glob=
76	>	else
77	>	posix_glob=:
78	>	fi
79	>	}
80	>	'
81	>
82	>	posix_mkdir=
83	>
84	>	# Desired mode of installed file.
85	>	mode=0755
86
52	–	mvprog="${MVPROG-mv}"
53	–	cpprog="${CPPROG-cp}"
54	–	chmodprog="${CHMODPROG-chmod}"
55	–	chownprog="${CHOWNPROG-chown}"
56	–	chgrpprog="${CHGRPPROG-chgrp}"
57	–	stripprog="${STRIPPROG-strip}"
58	–	rmprog="${RMPROG-rm}"
59	–	mkdirprog="${MKDIRPROG-mkdir}"
60	–
61	–	transformbasename=
62	–	transform_arg=
63	–	instcmd="$mvprog"
64	–	chmodcmd="$chmodprog 0755"
65	–	chowncmd=
87		chgrpcmd=
88	<	stripcmd=
88	>	chmodcmd=$chmodprog
89	>	chowncmd=
90	>	mvcmd=$mvprog
91		rmcmd="$rmprog -f"
92	<	mvcmd="$mvprog"
92	>	stripcmd=
93	>
94		src=
95		dst=
96		dir_arg=
97	+	dst_arg=
98
99	<	usage="Usage: $0 [OPTION]... SRCFILE DSTFILE
99	>	copy_on_change=false
100	>	no_target_directory=
101	>
102	>	usage="\
103	>	Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE
104		or: $0 [OPTION]... SRCFILES... DIRECTORY
105	<	or: $0 -d DIRECTORIES...
105	>	or: $0 [OPTION]... -t DIRECTORY SRCFILES...
106	>	or: $0 [OPTION]... -d DIRECTORIES...
107
108	<	In the first form, install SRCFILE to DSTFILE, removing SRCFILE by default.
109	<	In the second, create the directory path DIR.
108	>	In the 1st form, copy SRCFILE to DSTFILE.
109	>	In the 2nd and 3rd, copy all SRCFILES to DIRECTORY.
110	>	In the 4th, create DIRECTORIES.
111
112		Options:
113	<	-b=TRANSFORMBASENAME
114	<	-c         copy source (using $cpprog) instead of moving (using $mvprog).
115	<	-d         create directories instead of installing files.
116	<	-g GROUP   $chgrp installed files to GROUP.
117	<	-m MODE    $chmod installed files to MODE.
118	<	-o USER    $chown installed files to USER.
119	<	-s         strip installed files (using $stripprog).
120	<	-t=TRANSFORM
121	<	--help     display this help and exit.
122	<	--version  display version info and exit.
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
126		Environment variables override the default commands:
127	<	CHGRPPROG CHMODPROG CHOWNPROG CPPROG MKDIRPROG MVPROG RMPROG STRIPPROG
127	>	CHGRPPROG CHMODPROG CHOWNPROG CMPPROG CPPROG MKDIRPROG MVPROG
128	>	RMPROG STRIPPROG
129		"
130
131	<	while test -n "$1"; do
131	>	while test $# -ne 0; do
132		case $1 in
133	<	-b=*) transformbasename=`echo $1 | sed 's/-b=//'`
134	<	shift
135	<	continue;;
136	<
137	<	-c) instcmd=$cpprog
104	<	shift
105	<	continue;;
106	<
107	<	-d) dir_arg=true
108	<	shift
109	<	continue;;
133	>	-c) ;;
134	>
135	>	-C) copy_on_change=true;;
136	>
137	>	-d) dir_arg=true;;
138
139		-g) chgrpcmd="$chgrpprog $2"
140	<	shift
141	<	shift
142	<	continue;;
143	<
144	<	--help) echo "$usage"; exit 0;;
145	<
146	<	-m) chmodcmd="$chmodprog $2"
147	<	shift
148	<	shift
149	<	continue;;
140	>	shift;;
141	>
142	>	--help) echo "$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 $2"
154	<	shift
155	<	shift
156	<	continue;;
157	<
158	<	-s) stripcmd=$stripprog
159	<	shift
160	<	continue;;
161	<
162	<	-t=*) transformarg=`echo $1 | sed 's/-t=//'`
163	<	shift
164	<	continue;;
165	<
136	<	--version) echo "$0 $scriptversion"; exit 0;;
137	<
138	<	*)  # When -d is used, all remaining arguments are directories to create.
139	<	test -n "$dir_arg" && break
140	<	# Otherwise, the last argument is the destination.  Remove it from $@.
141	<	for arg
142	<	do
143	<	if test -n "$dstarg"; then
144	<	# $@ is not empty: it contains at least $arg.
145	<	set fnord "$@" "$dstarg"
146	<	shift # fnord
147	<	fi
148	<	shift # arg
149	<	dstarg=$arg
150	<	done
154	>	shift;;
155	>
156	>	-s) stripcmd=$stripprog;;
157	>
158	>	-t) dst_arg=$2
159	>	shift;;
160	>
161	>	-T) no_target_directory=true;;
162	>
163	>	--version) echo "$0 $scriptversion"; exit $?;;
164	>
165	>	--) shift
166		break;;
167	+
168	+	-*) echo "$0: invalid option: $1" >&2
169	+	exit 1;;
170	+
171	+	*)  break;;
172		esac
173	+	shift
174		done
175
176	<	if test -z "$1"; then
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	>	done
190	>	fi
191	>
192	>	if test $# -eq 0; then
193		if test -z "$dir_arg"; then
194		echo "$0: no input file specified." >&2
195		exit 1
#	Line 162 | Line 199 | if test -z "$1"; then
199		exit 0
200		fi
201
202	+	if test -z "$dir_arg"; then
203	+	trap '(exit $?); exit' 1 2 13 15
204	+
205	+	# Set umask so as not to create temps with too-generous modes.
206	+	# However, 'strip' requires both read and write access to temps.
207	+	case $mode in
208	+	# Optimize common cases.
209	+	*644) cp_umask=133;;
210	+	*755) cp_umask=22;;
211	+
212	+	*[0-7])
213	+	if test -z "$stripcmd"; then
214	+	u_plus_rw=
215	+	else
216	+	u_plus_rw='% 200'
217	+	fi
218	+	cp_umask=`expr '(' 777 - $mode % 1000 ')' $u_plus_rw`;;
219	+	*)
220	+	if test -z "$stripcmd"; then
221	+	u_plus_rw=
222	+	else
223	+	u_plus_rw=,u+rw
224	+	fi
225	+	cp_umask=$mode$u_plus_rw;;
226	+	esac
227	+	fi
228	+
229		for src
230		do
231		# Protect names starting with `-'.
232		case $src in
233	<	-*) src=./$src ;;
233	>	-*) src=./$src;;
234		esac
235
236		if test -n "$dir_arg"; then
237		dst=$src
238	<	src=
239	<
240	<	if test -d "$dst"; then
177	<	instcmd=:
178	<	chmodcmd=
179	<	else
180	<	instcmd=$mkdirprog
181	<	fi
238	>	dstdir=$dst
239	>	test -d "$dstdir"
240	>	dstdir_status=$?
241		else
242	<	# Waiting for this to be detected by the "$instcmd $src $dsttmp" command
242	>
243	>	# Waiting for this to be detected by the "$cpprog $src $dsttmp" command
244		# might cause directories to be created, which would be especially bad
245		# if $src (and thus $dsttmp) contains '*'.
246		if test ! -f "$src" && test ! -d "$src"; then
#	Line 188 | Line 248 | do
248		exit 1
249		fi
250
251	<	if test -z "$dstarg"; then
251	>	if test -z "$dst_arg"; then
252		echo "$0: no destination specified." >&2
253		exit 1
254		fi
255
256	<	dst=$dstarg
256	>	dst=$dst_arg
257		# Protect names starting with `-'.
258		case $dst in
259	<	-*) dst=./$dst ;;
259	>	-*) dst=./$dst;;
260		esac
261
262		# If destination is a directory, append the input filename; won't work
263		# if double slashes aren't ignored.
264		if test -d "$dst"; then
265	<	dst=$dst/`basename "$src"`
265	>	if test -n "$no_target_directory"; then
266	>	echo "$0: $dst_arg: Is a directory" >&2
267	>	exit 1
268	>	fi
269	>	dstdir=$dst
270	>	dst=$dstdir/`basename "$src"`
271	>	dstdir_status=0
272	>	else
273	>	# Prefer dirname, but fall back on a substitute if dirname fails.
274	>	dstdir=`
275	>	(dirname "$dst") 2>/dev/null ||
276	>	expr X"$dst" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
277	>	X"$dst" : 'X\(//\)[^/]' \| \
278	>	X"$dst" : 'X\(//\)$' \| \
279	>	X"$dst" : 'X\(/\)' \| . 2>/dev/null ||
280	>	echo X"$dst" |
281	>	sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
282	>	s//\1/
283	>	q
284	>	}
285	>	/^X\(\/\/\)[^/].*/{
286	>	s//\1/
287	>	q
288	>	}
289	>	/^X\(\/\/\)$/{
290	>	s//\1/
291	>	q
292	>	}
293	>	/^X\(\/\).*/{
294	>	s//\1/
295	>	q
296	>	}
297	>	s/.*/./; q'
298	>	`
299	>
300	>	test -d "$dstdir"
301	>	dstdir_status=$?
302		fi
303		fi
304
305	<	# This sed command emulates the dirname command.
210	<	dstdir=`echo "$dst" | sed -e 's,[^/]*$,,;s,/$,,;s,^$,.,'`
211	<
212	<	# Make sure that the destination directory exists.
305	>	obsolete_mkdir_used=false
306
307	<	# Skip lots of stat calls in the usual case.
308	<	if test ! -d "$dstdir"; then
309	<	defaultIFS='
310	<	'
311	<	IFS="${IFS-$defaultIFS}"
312	<
313	<	oIFS=$IFS
314	<	# Some sh's can't handle IFS=/ for some reason.
315	<	IFS='%'
316	<	set - `echo "$dstdir" | sed -e 's@/@%@g' -e 's@^%@/@'`
317	<	IFS=$oIFS
307	>	if test $dstdir_status != 0; then
308	>	case $posix_mkdir in
309	>	'')
310	>	# Create intermediate dirs using mode 755 as modified by the umask.
311	>	# This is like FreeBSD 'install' as of 1997-10-28.
312	>	umask=`umask`
313	>	case $stripcmd.$umask in
314	>	# Optimize common cases.
315	>	*[2367][2367]) mkdir_umask=$umask;;
316	>	.*0[02][02] | .[02][02] | .[02]) mkdir_umask=22;;
317	>
318	>	*[0-7])
319	>	mkdir_umask=`expr $umask + 22 \
320	>	- $umask % 100 % 40 + $umask % 20 \
321	>	- $umask % 10 % 4 + $umask % 2
322	>	`;;
323	>	*) mkdir_umask=$umask,go-w;;
324	>	esac
325	>
326	>	# With -d, create the new directory with the user-specified mode.
327	>	# Otherwise, rely on $mkdir_umask.
328	>	if test -n "$dir_arg"; then
329	>	mkdir_mode=-m$mode
330	>	else
331	>	mkdir_mode=
332	>	fi
333	>
334	>	posix_mkdir=false
335	>	case $umask in
336	>	*[123567][0-7][0-7])
337	>	# POSIX mkdir -p sets u+wx bits regardless of umask, which
338	>	# is incompatible with FreeBSD 'install' when (umask & 300) != 0.
339	>	;;
340	>	*)
341	>	tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$
342	>	trap 'ret=$?; rmdir "$tmpdir/d" "$tmpdir" 2>/dev/null; exit $ret' 0
343	>
344	>	if (umask $mkdir_umask &&
345	>	exec $mkdirprog $mkdir_mode -p -- "$tmpdir/d") >/dev/null 2>&1
346	>	then
347	>	if test -z "$dir_arg" || {
348	>	# Check for POSIX incompatibilities with -m.
349	>	# HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
350	>	# other-writeable bit of parent directory when it shouldn't.
351	>	# FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
352	>	ls_ld_tmpdir=`ls -ld "$tmpdir"`
353	>	case $ls_ld_tmpdir in
354	>	d????-?r-*) different_mode=700;;
355	>	d????-?--*) different_mode=755;;
356	>	*) false;;
357	>	esac &&
358	>	$mkdirprog -m$different_mode -p -- "$tmpdir" && {
359	>	ls_ld_tmpdir_1=`ls -ld "$tmpdir"`
360	>	test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1"
361	>	}
362	>	}
363	>	then posix_mkdir=:
364	>	fi
365	>	rmdir "$tmpdir/d" "$tmpdir"
366	>	else
367	>	# Remove any dirs left behind by ancient mkdir implementations.
368	>	rmdir ./$mkdir_mode ./-p ./-- 2>/dev/null
369	>	fi
370	>	trap '' 0;;
371	>	esac;;
372	>	esac
373
374	<	pathcomp=
374	>	if
375	>	$posix_mkdir && (
376	>	umask $mkdir_umask &&
377	>	$doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir"
378	>	)
379	>	then :
380	>	else
381
382	<	while test $# -ne 0 ; do
383	<	pathcomp=$pathcomp$1
382	>	# The umask is ridiculous, or mkdir does not conform to POSIX,
383	>	# or it failed possibly due to a race condition.  Create the
384	>	# directory the slow way, step by step, checking for races as we go.
385	>
386	>	case $dstdir in
387	>	/*) prefix='/';;
388	>	-*) prefix='./';;
389	>	*)  prefix='';;
390	>	esac
391	>
392	>	eval "$initialize_posix_glob"
393	>
394	>	oIFS=$IFS
395	>	IFS=/
396	>	$posix_glob set -f
397	>	set fnord $dstdir
398		shift
399	<	if test ! -d "$pathcomp"; then
400	<	$mkdirprog "$pathcomp" || lasterr=$?
401	<	# mkdir can fail with a `File exist' error in case several
402	<	# install-sh are creating the directory concurrently.  This
403	<	# is OK.
404	<	test ! -d "$pathcomp" && { (exit ${lasterr-1}); exit; }
399	>	$posix_glob set +f
400	>	IFS=$oIFS
401	>
402	>	prefixes=
403	>
404	>	for d
405	>	do
406	>	test -z "$d" && continue
407	>
408	>	prefix=$prefix$d
409	>	if test -d "$prefix"; then
410	>	prefixes=
411	>	else
412	>	if $posix_mkdir; then
413	>	(umask=$mkdir_umask &&
414	>	$doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir") && break
415	>	# Don't fail if two instances are running concurrently.
416	>	test -d "$prefix" || exit 1
417	>	else
418	>	case $prefix in
419	>	*\'*) qprefix=`echo "$prefix" | sed "s/'/'\\\\\\\\''/g"`;;
420	>	*) qprefix=$prefix;;
421	>	esac
422	>	prefixes="$prefixes '$qprefix'"
423	>	fi
424	>	fi
425	>	prefix=$prefix/
426	>	done
427	>
428	>	if test -n "$prefixes"; then
429	>	# Don't fail if two instances are running concurrently.
430	>	(umask $mkdir_umask &&
431	>	eval "\$doit_exec \$mkdirprog $prefixes") ||
432	>	test -d "$dstdir" || exit 1
433	>	obsolete_mkdir_used=true
434		fi
435	<	pathcomp=$pathcomp/
239	<	done
435	>	fi
436		fi
437
438		if test -n "$dir_arg"; then
439	<	$doit $instcmd "$dst" \
440	<	&& { test -z "$chowncmd" || $doit $chowncmd "$dst"; } \
441	<	&& { test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } \
442	<	&& { test -z "$stripcmd" || $doit $stripcmd "$dst"; } \
247	<	&& { test -z "$chmodcmd" || $doit $chmodcmd "$dst"; }
248	<
439	>	{ test -z "$chowncmd" || $doit $chowncmd "$dst"; } &&
440	>	{ test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } &&
441	>	{ test "$obsolete_mkdir_used$chowncmd$chgrpcmd" = false ||
442	>	test -z "$chmodcmd" || $doit $chmodcmd $mode "$dst"; } || exit 1
443		else
250	–	# If we're going to rename the final executable, determine the name now.
251	–	if test -z "$transformarg"; then
252	–	dstfile=`basename "$dst"`
253	–	else
254	–	dstfile=`basename "$dst" $transformbasename \
255	–	| sed $transformarg`$transformbasename
256	–	fi
257	–
258	–	# don't allow the sed command to completely eliminate the filename.
259	–	test -z "$dstfile" && dstfile=`basename "$dst"`
444
445		# Make a couple of temp file names in the proper directory.
446		dsttmp=$dstdir/_inst.$$_
447		rmtmp=$dstdir/_rm.$$_
448
449		# Trap to clean up those temp files at exit.
450	<	trap 'status=$?; rm -f "$dsttmp" "$rmtmp" && exit $status' 0
267	<	trap '(exit $?); exit' 1 2 13 15
450	>	trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0
451
452	<	# Move or copy the file name to the temp name
453	<	$doit $instcmd "$src" "$dsttmp" &&
452	>	# Copy the file name to the temp name.
453	>	(umask $cp_umask && $doit_exec $cpprog "$src" "$dsttmp") &&
454
455		# and set any options; do chmod last to preserve setuid bits.
456		#
457		# If any of these fail, we abort the whole thing.  If we want to
458		# ignore errors from any of these, just make sure not to ignore
459	<	# errors from the above "$doit $instcmd $src $dsttmp" command.
459	>	# errors from the above "$doit $cpprog $src $dsttmp" command.
460		#
461	<	{ test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } \
462	<	&& { test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } \
463	<	&& { test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } \
464	<	&& { test -z "$chmodcmd" || $doit $chmodcmd "$dsttmp"; } &&
465	<
466	<	# Now rename the file to the real destination.
467	<	{ $doit $mvcmd -f "$dsttmp" "$dstdir/$dstfile" 2>/dev/null \
468	<	|| {
469	<	# The rename failed, perhaps because mv can't rename something else
470	<	# to itself, or perhaps because mv is so ancient that it does not
471	<	# support -f.
472	<
473	<	# Now remove or move aside any old file at destination location.
474	<	# We try this two ways since rm can't unlink itself on some
475	<	# systems and the destination file might be busy for other
476	<	# reasons.  In this case, the final cleanup might fail but the new
477	<	# file should still install successfully.
478	<	{
479	<	if test -f "$dstdir/$dstfile"; then
480	<	$doit $rmcmd -f "$dstdir/$dstfile" 2>/dev/null \
481	<	|| $doit $mvcmd -f "$dstdir/$dstfile" "$rmtmp" 2>/dev/null \
482	<	|| {
483	<	echo "$0: cannot unlink or rename $dstdir/$dstfile" >&2
301	<	(exit 1); exit
302	<	}
303	<	else
304	<	:
305	<	fi
306	<	} &&
307	<
308	<	# Now rename the file to the real destination.
309	<	$doit $mvcmd "$dsttmp" "$dstdir/$dstfile"
310	<	}
311	<	}
312	<	fi || { (exit 1); exit; }
313	<	done
461	>	{ test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } &&
462	>	{ test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } &&
463	>	{ test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } &&
464	>	{ test -z "$chmodcmd" || $doit $chmodcmd $mode "$dsttmp"; } &&
465	>
466	>	# If -C, don't bother to copy if it wouldn't change the file.
467	>	if $copy_on_change &&
468	>	old=`LC_ALL=C ls -dlL "$dst"     2>/dev/null` &&
469	>	new=`LC_ALL=C ls -dlL "$dsttmp"  2>/dev/null` &&
470	>
471	>	eval "$initialize_posix_glob" &&
472	>	$posix_glob set -f &&
473	>	set X $old && old=:$2:$4:$5:$6 &&
474	>	set X $new && new=:$2:$4:$5:$6 &&
475	>	$posix_glob set +f &&
476	>
477	>	test "$old" = "$new" &&
478	>	$cmpprog "$dst" "$dsttmp" >/dev/null 2>&1
479	>	then
480	>	rm -f "$dsttmp"
481	>	else
482	>	# Rename the file to the real destination.
483	>	$doit $mvcmd -f "$dsttmp" "$dst" 2>/dev/null ||
484
485	<	# The final little trick to "correctly" pass the exit status to the exit trap.
486	<	{
487	<	(exit 0); exit
488	<	}
485	>	# The rename failed, perhaps because mv can't rename something else
486	>	# to itself, or perhaps because mv is so ancient that it does not
487	>	# support -f.
488	>	{
489	>	# Now remove or move aside any old file at destination location.
490	>	# We try this two ways since rm can't unlink itself on some
491	>	# systems and the destination file might be busy for other
492	>	# reasons.  In this case, the final cleanup might fail but the new
493	>	# file should still install successfully.
494	>	{
495	>	test ! -f "$dst" ||
496	>	$doit $rmcmd -f "$dst" 2>/dev/null ||
497	>	{ $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null &&
498	>	{ $doit $rmcmd -f "$rmtmp" 2>/dev/null; :; }
499	>	} ||
500	>	{ echo "$0: cannot unlink or rename $dst" >&2
501	>	(exit 1); exit 1
502	>	}
503	>	} &&
504	>
505	>	# Now rename the file to the real destination.
506	>	$doit $mvcmd "$dsttmp" "$dst"
507	>	}
508	>	fi || exit 1
509	>
510	>	trap '' 0
511	>	fi
512	>	done
513
514		# Local variables:
515		# eval: (add-hook 'write-file-hooks 'time-stamp)
516		# time-stamp-start: "scriptversion="
517		# time-stamp-format: "%:y-%02m-%02d.%02H"
518	<	# time-stamp-end: "$"
518	>	# time-stamp-time-zone: "UTC"
519	>	# time-stamp-end: "; # UTC"
520		# End:

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