xref: /aosp_15_r20/external/e2fsprogs/install-utils/convfstab (revision 6a54128f25917bfc36a8a6e9d722c04a0b4641b6)

#!/bin/sh
#  Make /etc/fstab standard compliant.
#  M.Weller ([email protected]) 13.11.1994.
#  This script is public domain. Still if only slightly
#  modified a credit to me might be nice.

ROOT_PASS=1		# Pass for root file system
NON_ROOT_PASS=2		# Pass for non root file systems
DEF_FLAGS="defaults"	# Default filesysflags
DEF_DUMP=0		# Default dumpfreq.

while read LINE
do
  set -- $LINE
  if [ $# != 0 ]
  then
    case $1 in
      \#* | !* )
	echo "$LINE"
	#  Actually there are no comments allowed in /etc/fstab
	echo "Warning: comment in /etc/fstab detected." >&2
	echo "Please remove it by hand." >&2
	;;
      * )
	if [ $# -gt 6 ] || [ $# -lt 3 ]
	then
	  echo "Don't have a clue about \"$LINE\"." >&2
	  echo "$LINE"
	else
	  case $2 in
	    / )
	      PASS=$ROOT_PASS
	      ;;
	    none )
	      PASS=0
	      ;;
	    * )
	      PASS=$NON_ROOT_PASS
	      ;;
	  esac
	  DUMP=$DEF_DUMP
	  case $3 in
	    ignore | iso9660 | msdos | hpfs | sysv | \
		  xenix | coherent | nfs | proc | sw | swap )
	      DUMP=0;
	      PASS=0;
	      ;;
	  esac
	  case $# in
	    3 )
	      echo "$LINE	$DEF_FLAGS	$DUMP	$PASS"
	      ;;
	    4 )
	      echo "$LINE	$DUMP	$PASS"
	      ;;
	    5 )
	      echo "$LINE	$PASS"
	      ;;
	    6)
	      echo "$LINE"
	      ;;
	  esac
	fi
	;;
    esac
  else
    echo "Warning: One empty line removed." >&2
  fi
done </etc/fstab >/tmp/newfstab.$$
mv -f /etc/fstab /etc/fstab.bak
mv -f /tmp/newfstab.$$ /etc/fstab
if [ $? != 0 ]
then
  echo "Installation of patched /etc/fstab failed."
  echo "It would have been:"
  cat /tmp/newfstab.$$
  rm -f /tmp/newfstab.$$
fi