view build-scripts/mkinstalldirs @ 4355:9b464226e541 SDL-1.2

Fixed bug #855 Ludwig Nussel 2009-10-18 06:31:52 PDT an mprotect call was added to fix bug 528. However that results in a buffer that allows writing and code execution. Ie the no-execute security features of modern operating systems are defeated this way. Two mprotect calls are needed. One to make the buffer executable but not writeable when done and another one to make the buffer writeable again if the content needs to be changed.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 18 Oct 2009 17:31:37 +0000
parents 19418e4422cb
children
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#! /bin/sh
# mkinstalldirs --- make directory hierarchy
# Author: Noah Friedman <friedman@prep.ai.mit.edu>
# Created: 1993-05-16
# Public domain

errstatus=0
dirmode=""

usage="\
Usage: mkinstalldirs [-h] [--help] [-m mode] dir ..."

# process command line arguments
while test $# -gt 0 ; do
   case "${1}" in
     -h | --help | --h* )			# -h for help
	echo "${usage}" 1>&2; exit 0 ;;
     -m )					# -m PERM arg
	shift
	test $# -eq 0 && { echo "${usage}" 1>&2; exit 1; }
	dirmode="${1}"
	shift ;;
     -- ) shift; break ;;			# stop option processing
     -* ) echo "${usage}" 1>&2; exit 1 ;;	# unknown option
     * )  break ;;				# first non-opt arg
   esac
done

for file
do
  if test -d "$file"; then
    shift
  else
    break
  fi
done

case $# in
0) exit 0 ;;
esac

case $dirmode in
'')
  if mkdir -p -- . 2>/dev/null; then
    echo "mkdir -p -- $*"
    exec mkdir -p -- "$@"
  fi ;;
*)
  if mkdir -m "$dirmode" -p -- . 2>/dev/null; then
    echo "mkdir -m $dirmode -p -- $*"
    exec mkdir -m "$dirmode" -p -- "$@"
  fi ;;
esac

for file
do
   set fnord `echo ":$file" | sed -ne 's/^:\//#/;s/^://;s/\// /g;s/^#/\//;p'`
   shift

   pathcomp=
   for d
   do
     pathcomp="$pathcomp$d"
     case "$pathcomp" in
       -* ) pathcomp=./$pathcomp ;;
     esac

     if test ! -d "$pathcomp"; then
	echo "mkdir $pathcomp"

	mkdir "$pathcomp" || lasterr=$?

	if test ! -d "$pathcomp"; then
	  errstatus=$lasterr
	else
	  if test ! -z "$dirmode"; then
	     echo "chmod $dirmode $pathcomp"

	     lasterr=""
	     chmod "$dirmode" "$pathcomp" || lasterr=$?

	     if test ! -z "$lasterr"; then
	       errstatus=$lasterr
	     fi
	  fi
	fi
     fi

     pathcomp="$pathcomp/"
   done
done

exit $errstatus

# Local Variables:
# mode: shell-script
# sh-indentation: 3
# End:
# mkinstalldirs ends here