Sync from gnulib.

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)