diff options
Diffstat (limited to 'build-aux/install-sh')
| -rwxr-xr-x | build-aux/install-sh | 206 |
1 files changed, 142 insertions, 64 deletions
diff --git a/build-aux/install-sh b/build-aux/install-sh index f56e14764..5ac8da43d 100755 --- a/build-aux/install-sh +++ b/build-aux/install-sh @@ -1,7 +1,7 @@ #!/bin/sh # install - install a program, script, or datafile -scriptversion=2005-07-09.12 +scriptversion=2005-09-13.16 # This originates from X11R5 (mit/util/scripts/install.sh), which was # later released in X11R6 (xc/config/util/install.sh) with the @@ -58,7 +58,21 @@ stripprog="${STRIPPROG-strip}" rmprog="${RMPROG-rm}" mkdirprog="${MKDIRPROG-mkdir}" -chmodcmd="$chmodprog 0755" +posix_glob= +posix_mkdir= + +# Symbolic mode for testing mkdir with directories. +# It is the same as 755, but also tests that "u+" works. +test_mode=u=rwx,g=rx,o=rx,u+wx + +# Desired mode of installed file. +mode=0755 + +# Desired mode of newly created intermediate directories. +# It is empty if not known yet. +intermediate_mode= + +chmodcmd=$chmodprog chowncmd= chgrpcmd= stripcmd= @@ -111,7 +125,7 @@ while test -n "$1"; do --help) echo "$usage"; exit $?;; - -m) chmodcmd="$chmodprog $2" + -m) mode=$2 shift shift continue;; @@ -164,6 +178,8 @@ if test -z "$1"; then exit 0 fi +test -n "$dir_arg" || trap '(exit $?); exit' 1 2 13 15 + for src do # Protect names starting with `-'. @@ -173,15 +189,11 @@ do if test -n "$dir_arg"; then dst=$src - src= - - if test -d "$dst"; then - mkdircmd=: - chmodcmd= - else - mkdircmd=$mkdirprog - fi + dstdir=$dst + test -d "$dstdir" + dstdir_status=$? else + # Waiting for this to be detected by the "$cpprog $src $dsttmp" command # might cause directories to be created, which would be especially bad # if $src (and thus $dsttmp) contains '*'. @@ -208,53 +220,122 @@ do echo "$0: $dstarg: Is a directory" >&2 exit 1 fi - dst=$dst/`basename "$src"` + dstdir=$dst + dst=$dstdir/`basename "$src"` + dstdir_status=0 + else + # Prefer dirname, but fall back on a substitute if dirname fails. + dstdir=` + (dirname "$dst") 2>/dev/null || + expr X"$dst" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \ + X"$dst" : 'X\(//\)[^/]' \| \ + X"$dst" : 'X\(//\)$' \| \ + X"$dst" : 'X\(/\)' \| \ + . : '\(.\)' 2>/dev/null || + echo X"$dst" | + sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; } + /^X\(\/\/\)[^/].*/{ s//\1/; q; } + /^X\(\/\/\)$/{ s//\1/; q; } + /^X\(\/\).*/{ s//\1/; q; } + s/.*/./; q' + ` + + test -d "$dstdir" + dstdir_status=$? fi fi - # This sed command emulates the dirname command. - dstdir=`echo "$dst" | sed -e 's,/*$,,;s,[^/]*$,,;s,/*$,,;s,^$,.,'` + obsolete_mkdir_used=false + + if test $dstdir_status != 0; then + case $posix_mkdir in + '') + posix_mkdir=false + if $mkdirprog -m $test_mode -p -- / >/dev/null 2>&1; then + posix_mkdir=true + else + # Remove any dirs left behind by ancient mkdir implementations. + rmdir ./-m "$test_mode" ./-p ./-- 2>/dev/null + fi ;; + esac - # Make sure that the destination directory exists. + if + $posix_mkdir && { + + # With -d, create the new directory with the user-specified mode. + # Otherwise, create it using the same intermediate mode that + # mkdir -p would use when creating intermediate directories. + # POSIX says that this mode is "$(umask -S),u+wx", so use that + # if umask -S works. + + if test -n "$dir_arg"; then + mkdir_mode=$mode + else + case $intermediate_mode in + '') + if umask_S=`(umask -S) 2>/dev/null`; then + intermediate_mode=$umask_S,u+wx + else + intermediate_mode=$test_mode + fi ;; + esac + mkdir_mode=$intermediate_mode + fi + + $mkdirprog -m "$mkdir_mode" -p -- "$dstdir" + } + then : + else - # Skip lots of stat calls in the usual case. - if test ! -d "$dstdir"; then - case $dstdir in - /*) pathcomp=/ ;; - -*) pathcomp=./ ;; - *) pathcomp= ;; - esac - oIFS=$IFS - IFS=/ - set fnord $dstdir - shift - IFS=$oIFS - - for d - do - test "x$d" = x && continue - - pathcomp=$pathcomp$d - if test ! -d "$pathcomp"; then - $mkdirprog "$pathcomp" - # mkdir can fail with a `File exist' error in case several - # install-sh are creating the directory concurrently. This - # is OK. - test -d "$pathcomp" || exit 1 - fi - pathcomp=$pathcomp/ - done + # mkdir does not conform to POSIX, or it failed possibly due to + # a race condition. Create the directory the slow way, step by + # step, checking for races as we go. + + case $dstdir in + /*) pathcomp=/ ;; + -*) pathcomp=./ ;; + *) pathcomp= ;; + esac + + case $posix_glob in + '') + if (set -f) 2>/dev/null; then + posix_glob=true + else + posix_glob=false + fi ;; + esac + + oIFS=$IFS + IFS=/ + $posix_glob && set -f + set fnord $dstdir + shift + $posix_glob && set +f + IFS=$oIFS + + for d + do + test "x$d" = x && continue + + pathcomp=$pathcomp$d + if test ! -d "$pathcomp"; then + $mkdirprog "$pathcomp" + # Don't fail if two instances are running concurrently. + test -d "$pathcomp" || exit 1 + fi + pathcomp=$pathcomp/ + done + obsolete_mkdir_used=true + fi fi if test -n "$dir_arg"; then - $doit $mkdircmd "$dst" \ - && { test -z "$chowncmd" || $doit $chowncmd "$dst"; } \ - && { test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } \ - && { test -z "$stripcmd" || $doit $stripcmd "$dst"; } \ - && { test -z "$chmodcmd" || $doit $chmodcmd "$dst"; } - + { test -z "$chowncmd" || $doit $chowncmd "$dst"; } && + { test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } && + { test "$obsolete_mkdir_used$chowncmd$chgrpcmd" = false || + test -z "$chmodcmd" || $doit $chmodcmd "$mode" "$dst"; } || exit 1 else - dstfile=`basename "$dst"` # Make a couple of temp file names in the proper directory. dsttmp=$dstdir/_inst.$$_ @@ -262,7 +343,6 @@ do # Trap to clean up those temp files at exit. trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0 - trap '(exit $?); exit' 1 2 13 15 # Copy the file name to the temp name. $doit $cpprog "$src" "$dsttmp" && @@ -276,10 +356,10 @@ do { test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } \ && { test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } \ && { test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } \ - && { test -z "$chmodcmd" || $doit $chmodcmd "$dsttmp"; } && + && { test -z "$chmodcmd" || $doit $chmodcmd "$mode" "$dsttmp"; } && # Now rename the file to the real destination. - { $doit $mvcmd -f "$dsttmp" "$dstdir/$dstfile" 2>/dev/null \ + { $doit $mvcmd -f "$dsttmp" "$dst" 2>/dev/null \ || { # The rename failed, perhaps because mv can't rename something else # to itself, or perhaps because mv is so ancient that it does not @@ -291,11 +371,12 @@ do # reasons. In this case, the final cleanup might fail but the new # file should still install successfully. { - if test -f "$dstdir/$dstfile"; then - $doit $rmcmd -f "$dstdir/$dstfile" 2>/dev/null \ - || $doit $mvcmd -f "$dstdir/$dstfile" "$rmtmp" 2>/dev/null \ + if test -f "$dst"; then + $doit $rmcmd -f "$dst" 2>/dev/null \ + || { $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null \ + && { $doit $rmcmd -f "$rmtmp" 2>/dev/null; :; }; }\ || { - echo "$0: cannot unlink or rename $dstdir/$dstfile" >&2 + echo "$0: cannot unlink or rename $dst" >&2 (exit 1); exit 1 } else @@ -304,16 +385,13 @@ do } && # Now rename the file to the real destination. - $doit $mvcmd "$dsttmp" "$dstdir/$dstfile" + $doit $mvcmd "$dsttmp" "$dst" } - } - fi || { (exit 1); exit 1; } -done + } || exit 1 -# The final little trick to "correctly" pass the exit status to the exit trap. -{ - (exit 0); exit 0 -} + trap - 0 + fi +done # Local variables: # eval: (add-hook 'write-file-hooks 'time-stamp) |