woof-CE-libre/woof-code/boot/initrd-tree0/init

#!/bin/sh
#(c) Copyright 2007 Barry Kauler, www.puppylinux.com
#2007 GPL licence v2 (/usr/share/doc/legal/gpl-2.0.txt)
#Aug 2007, init script in initramfs, for puppy v2.20, Sept: v3.00, Oct: v3.01
#Nov 2007, v3.91: bugfix for humongous puppy.
#dec 2007, v3.93: update for 2.6.24 kernel, no /dev/hd*. v3.94: bugfix.
#v3.95 28dec07: load scsi_wait_scan.ko to fix sync problem with usb.
#v3.95 1jan08: fix for renaming of pmedia ide/sata -> ata.
#v3.96 26jan08: 2.6.24 kernel, remove scsi_wait_scan.ko and the delays.
#v3.97 31jan2008: restore support for hd* drives.
#v3.97 25feb2008: removed tmpfs on /tmp.
#v3.97 5mar2008: handle SAVEMARK file (see universal installer and rc.shutdown).
#v3.97 6mar2008: fix 'pfix=ram' for multisession cd/dvd.
#v3.97 6mar2008: multisession, copy saved .sfs files to '/' in ram.
#v3.98 3apr2008: partial fix, encrypted pup_save losetup failing.
#v4.00 21apr2008: ntfs-3g upgraded v1.417 to v1.2412.
#v4.00 26apr2008: slightly lowered threshold for copying pup_xxx.sfs to a tmpfs.
#v4.00 27apr2008: k2.6.25: strange sync problem. try restore scsi_wait_scan. NO, DO NOT.
#v4.01 7may2008: new system with all modules builtin to initrd, if ZDRVINIT='yes'
#v4.02 31may2008: export ZDRVINIT in /etc/rc.d/PUPSTATE
#v403 21jun08: reintroduce basic pcmcia support.
#v403 23jun08: fix for humongous initrd.
#v403 23jun08: fix boot from usb cd drive (classmate laptop).
#v404 13Jul08: pfix=noram removed, now need pfix=copy to copy .sfs to ram.
#v404 15jul08: prevent crash in PUPMODE 6,7. add pfix=fsck, otherwise never do fsck.
#v404 16jul08: fix for classmate with internal usb flash, PUPMODE now 13, not 12.
#v405 18jul08: default is now aufs. maybe won't even have unionfs module.
#v406 2aug08: restore support for old /dev/hd* ide devices.
#v406 9aug08: copy pup_xxx.sfs to same place as pup_save if fast media.
#v407 fix for module name change.
#v410 fix to allow 3 extra sfs files (a bug only allowed 2).
#v411 multisession, load saved /dev entries.
#v412 simplified module loading.
#v412 slight changes for new busybox v1.12.1.
#v412 fix usb-storage probe bug.
#v412 DISTRO_SPECS file. pup_xxx.sfs, zdrv_xxx.sfs renamed.
#v412 bugfix, /tmp/versioncleanup got overwritten by tmpfs mounted on /tmp.
#v412 bugfix, pup_ro6 was not created (for 3rd sfs file).
#w001 DISTRO_FILE_PREFIX, pup files renamed again, to woofsave.2fs, woofr001.sfs.
#w003 fix for loading yenta-socket module.
#w003 changed default to copy woofr001.sfs to ram >256MB ram.
#w003 /usr/sbin/snapmergepuppy now saves whiteout files to save-layer, change 'ro' to 'ro+wh'.
#w004 LANG=C
#w007 load nls_utf8.ko
#w012 bugfix. w014 usb flash can now have iso9660 f.s.
#w014 BootFlash utility can create 2 partitions in usb drive, one for boot, other for save.
#w015 allow 6 extra sfs files, up from 3.
#w019 pmedia=ataflash, PUPMODE=13 to constrain writes to drv.
#w460 bugfixes for zdrv, new name zu500629.sfs, handling 6 extra sfs files (7 incl. zdrv).
#w460 bugfix, boot usb, 1st shutdown was not offering to save session sometimes.
#w464 tidyup, make sure /etc/puppyversion is history.
#w468 load nls_cp850, now default for fat f.s. (2.6.29.2 kernel).
#w476 mntfunc() rewritten, support 'pkeys' boot param (work in progress).
#w478 modify sfs exclusion rules.
#w479 fix finding optical drive for kernel with old ide drivers.
#w481 record fast partitions, used by rc.shutdown.
#w482 lowered limit for copy sfs to ram, so multisession will work in 256mb pc.
#v423 k2.6.29.6 dmesg has warning that ehci-hcd should load before uhci-hcd and ohci-hid.
#v423 problem recent kernels: hid-* extra drivers needed as well as usbhid.
#v423 need to reject wrong squashfs version, 3.x or 4.0.
#v424 BootManager no longer has checkbox to only load _nnn.sfs files.
#v424 try again, fix tmpfs overwrites /tmp/versioncleanup
#v424 whiteout processing for aufs2 fixed.
#v426 pkeys=de caused failure to boot from vfat partition.
#v426 record of layers needs to include zdrv.
#v431 piratesmack: fix boot from ext4.
#091031 support quirky, kernel with initramfs built-in, maybe also <main f.s.>.sfs.
#091122 now have /lib/keymaps, /lib/consolefonts, load map if pkeys boot param.
#091222 first support for recognising mmc/sd cards at bootup.
#091225 copy executables from initrd to main f.s.
#100113 TARGETEXES file needed in main f.s., for universal installer.
#100214 one config of 2.6.33 has base floppy and ps/2 mouse support not builtin.
#100222 fix sync problem writing to BOOTCONFIG. technosaurus: consider very big puppies.
#100318 fix any improper shutdowns. see /etc/rc.d/rc.sysinit, rc.shutdown, /sbin/init.
#100323 hwclock path was wrong.
#100401 fix so pupsave can be ext2, ext3 or ext4.
#100406 latest patched aufs may allow sfs mntd one layer to be resident another layer.
#100423 try yet again, fix tmpfs overwrites /tmp/versioncleanup
#100427 despite the help inside the hwclock applet, it doesn't accept long-options.
#100520 pkeys boot param wasn't working for 'uk', 'dvorak'.
#100710 if pupsave file is in a subdirectory, only look for extra sfs's in that subdirectory.
#100711 modify above, look in top dir and in subdirectory.
#100820 multisession shutdown may now relocate some content of /var to /root/.var_saved.
#100831 fix KERNELSUBVER for olpc people, have 'uname -r' returning version with '_'.
#100911 simplified file names: vmlinuz, initrd.gz, puppy.sfs, zdrv.sfs, devx.sfs.
#100911 fsckme.err filename changed to fsckme.flg. see also initNEW, rc.sysinit, rc.shutdown.
#100911 completely overhauled the code to find puppy files. note, dropped support for /proc/ide.
#100914 fallback, search depth 3 -- sub-sub-folders. improve psubdir search.
#100915 technosaurus suggested 'pupsfs' and 'zdrv' kernel boot params. 100916 remove devxsfs. 100919.
#100920 fix decision copy .sfs to ram.
#100922 frugal install, multiple save-files in install-folder, was not offering choice.
#101005 echo extra info if attempted mount failed.
#101013 puppy.sfs was copied to tmpfs so can unmount partition.
#101020 SAVEMARK file can be in sub-directory that pup is installed in, improve searching for save-file.
#101021 avoid finding vmlinuz on hd when booting from cd.
#101028 ask if upgrading save-file. check if puppy.sfs copied to same place as save-file.
#101101 fix load zdrv if in humongous initrd.
#101102 zdrv.sfs was not getting loaded for PUPMODE=6/7 (save to entire partition).
#101103 ignore any session saved to entire partition if puppy installed in a subdir.
#101103 maybe network boot, no local vmlinuz.
#101103 modified logic to find save-file, tried some restrictions.
#101127: pakt: A precfg area for faster re-mastering, no need to regenerate a .SFS.
#101127 added some debugging into /tmp. Will end up in /initrd/tmp after bootup.
#101127 force update of /proc/partitions (slow to update for usb).
#101218 if boot from cd with 'pfix=ram', do not search other drives (do not want to load puppy.sfs off hd).
#110114 if a drive unplugged in previous boot, but plugged in at bootup, device-nodes will be missing in main f.s...
#110116 jamesbond: for netboot, PDEV1 is empty, tests modified. see: http://murga-linux.com/puppy/viewtopic.php?t=63400&start=180
#110116 shinobar: do not change PUPMODE 6 to 7, 12 to 13, if extern usbhd.
#110122 bypass update code, maybe causes more trouble than worth it. Rely on /etc/rc.d/update for all updating.
#110126 restored support for /proc/ide, device nodes /dev/hd*.
#110204 110205 110206 bug fixes: booting ide kernel, copying .sfs to sub-folder. warning: busybox grep -F different from full grep.
#110212 recent aufs: .wh.__dir_opaque name changed to .wh..wh..opq.
#110217 very bad hack, see /etc/rc.d/rc.update, rc.shutdown.
#110223 reset /tmp/PUPSAVES if loop back to do deeper search.
#110304 fix a test.
#110405 fix 'free' applet output format different in later versions of busybox.
#110422 DISTRO_VERSION variable now has dotted format. note, also now using full dotted version# in puppy filenames.
#110424 do not copy puppy*.sfs into a sub-dir (reverse of 110204). see also rc.shutdown.
#110425 major change, /sbin/wait4usb parallel process while searching ata drives, to speed booting.
#110426 move done/failed 2 places to right (also in rc.sysinit script).
#110509 fix for 'grep -f filename' where filename was empty only one LF char.
#110521 also convert bytes to kb.
#110710 handle kernel with usb driver built-in, and/or without my usb-drive-discovery patch (2.6.34+).
#110722 fix deleting of old boot scripts.
#110810 some builds may have many scsi drivers in initrd, if needed will have already loaded, so delete them.
#110810 problem kernel numbering 2.6.32-40, 2.6.32-44 both in /lib/modules/2.6.32.
#111003 ldolse: pemasu 2.6.39 kernel showing usb at also ata, causing double writes to /tmp/PUPSAVES.
#111120 workarounds for missing support utilities: fusermount (no longer needed), e2fsck, resize2fs
#120130 bring back Underdog Linux. Refer "take 2": http://puppylinux.com/development/howpuppyworks.html
#120215 internationalized (with help from L18L). /PUPPYLANG inserted by quicksetup (in future, Woof too).
#120216 /PUPPYKEYMAP inserted by quicksetup. if PLANG but no PKEYS, try assign matching PKEYS. L18L: new fonts.
#120217 L18L: export LANGUAGE and OUTPUT_CHARSET.
#120222 remove setting LANGUAGE. fix if boot param shortened, ex: plang=de
#120328 could have iso9660 f.s. booting off a usb flash/hard drive (see BootFlash). exclude /dev/sd and /dev/mmc.
#121102 file DISTRO_SPECS has new variable DISTRO_DB_SUBNAME. ex: for 14.0-based slacko, DISTRO_DB_SUBNAME=slacko14
#121227 more f.s. drivers as modules, need to load (see also 3builddistro).
#130128 support udf f.s.
#130211 ntfs-3g needs "silent" option.
#130216 preliminary support for f2fs. note, guess_fstype binary updated for f2fs, not yet busybox.
#130513 if we find a rw f.s., create pupdesk.flg. only needed in PUPMODE=5, see /usr/sbin/quicksetup.
#130514 shinobar: extra sfs in the order of EXTRASFSLIST.
#130514 disable pupdesk.flg mechanism if boot param "pfix=ram".
#130515 woof 3builddistro ask question to disable pupdesk.flg, edit this script.
#130518 fix mounting ntfs for creating pupdesk.flg. fix paths.
#130612 support devtmpfs.
#130618 DEVTMPFSFLG now set by 3builddistro. refer also /etc/rc.d/rc.sysinit.
#130728 always try to copy sfs to ram if >=700MB.
#140102 better font for Russian, font is added to /lib/consolefont (in rootfs-skeleton)
#140102 rodin.s: added utf8-option to VFAT_OUT_PARAM for flash drive to be mounted with utf-8 if boot is done from flash drive 

#Unionfs layers setup by this script...
#unionfs layers:            RW (top)      RO1             RO2              PUPMODE
#full install, flash drive: tmpfs         PDEV1                            3
#First boot (or pfix=ram):  tmpfs                         pup_xxx.sfs      5
#pup_save is a partition:   PDEV1                         pup_xxx.sfs      6
#ditto, but flash drive:    tmpfs         PDEV1           pup_xxx.sfs      7
#Normal running puppy:      pup_save.3fs                  pup_xxx.sfs      12
#ditto, but flash drive:    tmpfs         pup_save.3fs    pup_xxx.sfs      13
#Multisession cd/dvd:       tmpfs         folders(tmpfs2) pup_xxx.sfs      77 (13+64)

#/bin/hotplug2stdout_notimeout > /tmp/pup_event_uevents_initrd &

#120215 internationalize... (based on work by L18L)
if [ ! $1 ];then
 mount -t proc none /proc
 mount -t sysfs none /sys
 mount -t rootfs -o remount,rw rootfs /
 ln -s /proc/mounts /etc/mtab #resize2fs,e2fsck need this.
 [ $plang ] && PLANG=$plang #boot parameter
 [ "`echo -n "$PLANG" | grep '_'`" = "" ] && PLANG="" #120222 PLANG must be complete, ex: de_DE.UTF-8.
 [ ! "$PLANG" ] && [ -f /PUPPYLANG ] && PLANG=`cat /PUPPYLANG` #so Woof can specify a default lang.
 #note, a running puppy could also open initrd.gz and stick PUPPYLANG inside (i plan for chooselocale to do that!)
 if [ "$PLANG" ];then
  if [ -f /locale/${PLANG%.*}/init ];then #chop off .UTF-8 if it is there.
   TRANSLATIONFILE="/locale/${PLANG%.*}/init"
  else
   [ -f /locale/${PLANG%_*}/init ] && TRANSLATIONFILE="/locale/${PLANG%_*}/init" #get first 2 chars of PLANG, ex: en
  fi
  if [ "$TRANSLATIONFILE" ];then
   sed -f $TRANSLATIONFILE /init > /init2
   chmod 755 /init2
   exec /init2 $PLANG #run translated script.
  fi
 fi
else #2nd entry, running /init2
 PLANG=${1}
fi

export LANG=C #w004
. /DISTRO_SPECS #v412 has DISTRO_VERSION, DISTRO_FILE_PREFIX
[ ! "$DISTRO_DB_SUBNAME" ] && DISTRO_DB_SUBNAME="$DISTRO_COMPAT_VERSION" #121102 fallback if DISTRO_DB_SUBNAME not defined in file DISTRO_SPECS.

PATH="/bin:/sbin"
KERNELVER="`uname -r`"

PUPDESKFLG=1 #130515 this may be changed to 0 by 3builddistro.

##130612 detect CONFIG_DEVTMPFS=y and CONFIG_DEVTMPFS_MOUNT=y...
DEVTMPFSFLG=0 #130618 set it from 3builddistro.

#100911 simple filenames specified in DISTRO_SPECS: DISTRO_ZDRVSFS, DISTRO_PUPPYSFS...
ZDRVSFS="$DISTRO_ZDRVSFS"
ADRVSFS="$DISTRO_ADRVSFS"
YDRVSFS="$DISTRO_YDRVSFS"
PUPXXXSFS="$DISTRO_PUPPYSFS"
IDSTRING="$DISTRO_IDSTRING" #from DISTRO_SPECS, string appended to kernel.qky, vmlinuz, puppy.sfs, zdrv.sfs, devx.sfs (see 3builddistro).
[ "`echo "$PUPXXXSFS" | grep '[0-9]\.sfs'`" != "" ] && NAMETYPE='traditional' #110422 has version info.

[ $layerfs ] && LAYERFS=$layerfs
[ ! $LAYERFS ] && LAYERFS=aufs #aufs or unionfs
[ "`modinfo aufs 2>/dev/null`" = "" ] && LAYERFS=unionfs #precaution.

[ $loglevel ] && LOGLEVEL=$loglevel #v2.22

#100318 perform a f.s. check...
fsckme_func() { #passed params: partition filesystem [pupsavefile]
 if [ ! -e /bin/e2fsck ];then #111120
  echo -e -n "\\033[1;31m SORRY, cannot check filesystem \\033[0;39m" > /dev/console #31=red
  return
 fi
 [ "$DEEPFSCK" = "yes" ] && FCK="-f" || FCK=""
 case $2 in
  ext2|ext3|ext4)
   e2fsck -y ${FCK} /dev/$1 >/tmp/chkret &
   echo -e "\\033[1;35m" >/dev/console #35=purple
   if [ "${1}" = "loop1" ];then
    echo -n " 'save file' filesystem check, please wait..." >/dev/console
   else
    echo -n " '${1}' filesystem check, please wait..." >/dev/console
   fi
   usleep 200000 #100604 TazOC gave me idea that delay before pidof is good.
   while [ "`pidof e2fsck`" != "" ];do
    sleep 1
    echo -n "." >/dev/console
   done
   echo -en "\\033[0;39m" >/dev/console
  ;;
 esac
 if [ $3 ];then
  #rc.shutdown has created /fsckme.flg with this 3rd parameter.
  #this is a pupsave file, which has a ext2/3/4 f.s (based on .2fs, .3fs, .4fs ext)
  #this flag will be set for any prior improper shutdown. if have lots of installations
  #of puppy on the pc, the flag may not even be for this install of puppy, however, this is
  #the simplest implementation...
  PFSCK="yes"
 fi
}

mntfunc() {
 MNT_T="$1"    #ex: vfat
 MNT_DEV="$2"  #ex: /dev/sda1
 MNT_DIR="$3"  #ex: /mnt/sda1
 MNT_O=""
 [ $4 ] && MNT_O="${4}" #ex: noatime
 case $MNT_T in
  ntfs)
   ntfs-3g $MNT_DEV $MNT_DIR -o umask=0,no_def_opts,noatime,rw,silent 2>/dev/null #default is rw. 130211 add silent.
   ntfsRETVAL=$?
   [ $ntfsRETVAL -eq 0 ] && return 0
   if [ $ntfsRETVAL -eq 14 ];then
    echo -e "\\033[1;31m" >/dev/console #31=red
    echo -n "ERROR: Windows NTFS hibernated partition, cannot mount" > /dev/console
    echo -e "\\033[0;39m" >/dev/console
    return 14
   else
    ntfs-3g $MNT_DEV $MNT_DIR -o umask=0,no_def_opts,noatime,rw,force,silent 2>/dev/null #130211 add silent.
   fi
  ;;
  vfat)
   mount -t $MNT_T -o $VFAT_OUT_PARAM $MNT_DEV $MNT_DIR
  ;;
  *)
   if [ "$MNT_O" = "" ];then
    mount -t $MNT_T $MNT_DEV $MNT_DIR
   else
    mount -t $MNT_T -o $MNT_O $MNT_DEV $MNT_DIR
   fi
  ;;
 esac
 return $?
}

umntfunc() {
 #111120 note, this code is not needed anymore for ntfs-3g. normal 'umount' can unmount it.
 #warning umntfunc call must have mntpt param, not device name.
 LASTPARAM="`echo -n "$*" | tr '\t' ' ' | tr -s ' ' | tr ' ' '\n' | grep '^/mnt/'`"
 if [ "`mount | grep "$LASTPARAM" | grep -E 'ntfs|fuse'`" = "" ];then
  umount $@
 else
  fusermount -u $LASTPARAM
 fi
 return $?
}

check_status()
{
  if [ $1 -eq 0 ]
  then
    /bin/echo -en "\\033[74G" >/dev/console #move to column 72. 110426: 74
    /bin/echo -en "\\033[1;32m" >/dev/console
    /bin/echo -en "done" >/dev/console
    /bin/echo -e "\\033[0;39m" >/dev/console
  else
    /bin/echo -en "\\033[72G" >/dev/console #110426 move to column 72.
    /bin/echo -en "\\033[1;31m" >/dev/console
    /bin/echo -en "failed" >/dev/console
    /bin/echo -e "\\033[0;39m" >/dev/console
    echo -en "\\033[1;35m" >/dev/console #35=purple
    echo -n "Dumping last lines of /tmp/bootinit.log..." >/dev/console
    /bin/echo -e "\\033[0;39m" >/dev/console
    echo -en "\\033[1;31m" >/dev/console #31=red
    cat /tmp/bootinit.log | tail -n 4 >/dev/console
    /bin/echo -en "\\033[0;39m" >/dev/console
    echo -en "\\033[1;35m" >/dev/console #35=purple
    echo -n "Dumping last lines of kernel log..." >/dev/console
    /bin/echo -e "\\033[0;39m" >/dev/console
    echo -en "\\033[1;31m" >/dev/console #31=red
    dmesg | tail -n 4 >/dev/console
    /bin/echo -en "\\033[0;39m" >/dev/console
    #exit to initial ramdisk shell...
    [ "$RDSH" != "" ] && exec /bin/sh >/dev/console 2>&1
    echo "Pausing for 60 seconds..." >/dev/console
    sleep 60
  fi
}

search_func() { #110425

 case $1 in
  ata)
   [ "$PMEDIA" = "usbflash" -o "$PMEDIA" = "usbhd" ] && return #only probe usb drives.
   LESSPARTS0="`echo "$PCPARTS0" | grep -f /tmp/ALLDRVS0`" #111003 only probe non-usb drives. need for kernels builtin usb drvr.
  ;;
  *) #usb
   LESSPARTS0="`echo "$PCPARTS0" | grep -v -f /tmp/ATADRIVES0`" #only probe usb drives.
  ;;
 esac

 if [ "$PMEDIA" ];then #kernel boot param
  case $PMEDIA in
   cd)
    [ "$PRAMONLY" = "yes" ] &&  LESSPARTS0="`echo "$LESSPARTS0" | grep -E 'iso9660|udf'`" #do not search other drives. 130128 add udf.
   ;;
   *)
    #note: a mistake if have PDEV1 on usb booting, as it can change.
    [ "$PDEV1" ] && LESSPARTS0="`echo "$LESSPARTS0" | grep "${PDEV1}|"`" #kernel boot param.
   ;;
  esac
 fi
 [ "$LESSPARTS0" = "" ] && return #nothing to search in.
 LESSPARTS="`echo "$LESSPARTS0" | tr '\n' ' '`"
 echo "$PCPARTSALL" > /tmp/PCPARTSALL_${1} #for debugging.
 echo "$LESSPARTS0" > /tmp/LESSPARTS0_${1} #for debugging.
 
 #130513 want to give preference to write pupdesk.flg to a linux partition...
 LINUXFS="$(echo "$LESSPARTS0" | grep -E 'ext2|ext3|ext4|reiserfs|minix|f2fs' | head -n 1)"

 #find puppy files in the pc...
 #vmlinuz (and optional simplified puppy.sfs (PUPXXXSFS), zdrv.sfs (ZDRVSFS)) have appended id-string (IDSTRING).
 IGNORE=''
 SEARCHDEPTH=2
 [ "$PSUBDIR" ] && SEARCHDEPTH=1
 for ONETRY in $LESSPARTS
 do
  ONEDEV="`echo -n "$ONETRY" | cut -f 1 -d '|'`"
  ONEFS="`echo -n "$ONETRY" | cut -f 2 -d '|'`"
  ONEDRV="`echo -n "$ONEDEV" | grep -o -f /tmp/ALLDRVS0`" #110205 ex: sda1 becomes sda.
  if [ "$IGNORE" = "optical" ];then #110126 ignore optical if boot partition found.
   [ "`echo -n "$ONEDRV" | grep -f /tmp/OPTICALDRIVES0`" != "" ] && continue #110205
  fi

  [ "$PFSCK" = "yes" ] && [ "$pdev1" = "$ONEDEV" ] && \
   [ "$(echo $ONEFS| cut -c 1-3)" = "ext" ] && fsckme_func $ONEDEV $ONEFS
  #v403 nasty bug: usb optical drive showing as /sys/block/sr0, but won't mount, needs more delay...
  mntfunc $ONEFS /dev/$ONEDEV /mnt/data #-t $ONEFS /dev/$ONEDEV /mnt/data
  if [ $? -ne 0 ];then
   echo "PAUSE 5SEC: tried to mount /dev/${ONEDEV}, ${ONEFS} f.s." #101005 boot param loglevel=7 will show this.
   echo -e -n " \\033[1;31mpausing\\033[0;39m" > /dev/console #31=red
   sleep 5 #2 wasn't enough.
   mntfunc $ONEFS /dev/$ONEDEV /mnt/data
   if [ $? -ne 0 ];then
    echo "RETRY FAILED: mounting /dev/${ONEDEV}, ${ONEFS} f.s." #101005
    continue
   fi
  fi
  echo "ONEDEV=$ONEDEV ONEFS=$ONEFS ONEDRV=$ONEDRV PSUBDIR=$PSUBDIR" >> /tmp/puppy-file-search.log #101127 for debugging.
  
  if [ -d /mnt/data${PSUBDIR} ];then
  
   if [ "$VMLINUZ" = "" ];then #search for kernel.qky and vmlinuz...
    if [ "$ONEFS" != "iso9660" -a "$PMEDIA" = "cd" -a "$ONEFS" != "udf" ];then #101021 avoid finding vmlinuz on hd. 110204. 130128 also udf.
     echo "Bypass looking for vmlinuz on $ONEDEV"
    else
     FND_FILES="`find /mnt/data${PSUBDIR} -maxdepth ${SEARCHDEPTH} -xdev -type f -iname kernel.qky -o -iname ${KERNELNAME} | grep -v ' ' | sed -e 's%^/mnt/data%%' | tr '\n' ' '`"
     for ONEPUPFILE in $FND_FILES  #kernel.qky: see woof script 4quirkybuild.
     do
      ONEFULLSIZE=`stat -c %s /mnt/data${ONEPUPFILE}`
      ONEORIGSIZE=`expr $ONEFULLSIZE - 32` #110422
      ONEIDSTRING="`dd if=/mnt/data${ONEPUPFILE} bs=1 skip=${ONEORIGSIZE} 2>/dev/null | sed -e 's%[^a-zA-Z0-9\.]%%g'`"
      if [ "$ONEIDSTRING" = "$IDSTRING" ];then
       VMLINUZ="`basename $ONEPUPFILE`"
       PDEV1="$ONEDEV"
       DEV1FS="$ONEFS"
       BOOTDRV="$ONEDRV" #exs: sda sr0
       PSUBDIR="`dirname $ONEPUPFILE`" #ex: /puppies/wary071
       [ "$PSUBDIR" = "/" ] && PSUBDIR=""
       #SAVEMARK: BootFlash utility can create 128MB boot partition, 2nd partition for pupsave...
       #101020 if pup installed in a subdir, look there for SAVEMARK...
       [ -f /mnt/data${PSUBDIR}/SAVEMARK ] && PSAVEMARK="`cat /mnt/data${PSUBDIR}/SAVEMARK`" #partition no. that has or will-have ${DISTRO_FILE_PREFIX}save.2fs. 101020
       [ "$PSAVEMARK" ] && SAVEPART="${BOOTDRV}${PSAVEMARK}" #note, PSAVEMARK could also be a kernel boot param. ex: sda2
       [ "$PSUBDIR" = "" ] && [ -f /mnt/data/etc/DISTRO_SPECS ] && DEV1PUP='yes' #flag full installation. 101103 ignore if vmlinuz in a subdir.
       if [ "`echo -n "$BOOTDRV" | grep -f /tmp/OPTICALDRIVES0`" = "" ];then #110205 test not optical.
        IGNORE='optical' #refinement, if vmlinuz not on optical drive, don't probe it. 110126
       else #booting on optical, is it multisession?...
        FND_MULTIFOLDER="`find /mnt/data -maxdepth 1 -xdev -type d -name 20[0-9][0-9]-[0-9][0-9]-[0-9][0-9]-[0-9][0-9]-[0-9][0-9] | grep -v ' ' | sed -e 's%^/mnt/data%%' | head -n 1`"
        if [ "$FND_MULTIFOLDER" ];then #multisession cd/dvd
         if [ "$PRAMONLY" != "yes" ];then
          PUPMODE=72 #64+8, will become 77.
          PUPSAVE="${ONEDEV},${ONEFS},${FND_MULTIFOLDER}"
         fi
        fi
       fi
      fi
     done
    fi
   fi
   
   [ "$PSUBDIR" ] && SEARCHDEPTH=1
   
   if [ "$PUPSFS" = "" ];then
    FND_FILES="`find /mnt/data${PSUBDIR} -maxdepth ${SEARCHDEPTH} -xdev -type f -iname ${PUPXXXSFS} | grep -v ' ' | sed -e 's%^/mnt/data%%' | tr '\n' ' '`"
    for ONEPUPFILE in $FND_FILES
    do
     if [ "$NAMETYPE" = "traditional" ];then
      ONEIDSTRING="$IDSTRING" #found file based on it's name only.
     else
      ONEFULLSIZE=`stat -c %s /mnt/data${ONEPUPFILE}`
      ONEORIGSIZE=`expr $ONEFULLSIZE - 32`
      ONEIDSTRING="`dd if=/mnt/data${ONEPUPFILE} bs=1 skip=${ONEORIGSIZE} 2>/dev/null | sed -e 's%[^a-zA-Z0-9\.]%%g'`"
     fi
     if [ "$ONEIDSTRING" = "$IDSTRING" ];then
      PUPSFS="${ONEDEV},${ONEFS},${ONEPUPFILE}"
      break
     fi
    done
   fi
   
   if [ "$ZDRV" = "" ];then
    FND_FILES="`find /mnt/data${PSUBDIR} -maxdepth ${SEARCHDEPTH} -xdev -type f -iname ${ZDRVSFS} | grep -v ' ' | sed -e 's%^/mnt/data%%' | tr '\n' ' '`"
    for ONEPUPFILE in $FND_FILES
    do
     if [ "$NAMETYPE" = "traditional" ];then
      ONEIDSTRING="$IDSTRING" #found file based on it's name only.
     else
      ONEFULLSIZE=`stat -c %s /mnt/data${ONEPUPFILE}`
      ONEORIGSIZE=`expr $ONEFULLSIZE - 32` #110422
      ONEIDSTRING="`dd if=/mnt/data${ONEPUPFILE} bs=1 skip=${ONEORIGSIZE} 2>/dev/null | sed -e 's%[^a-zA-Z0-9\.]%%g'`"
     fi
     if [ "$ONEIDSTRING" = "$IDSTRING" ];then
      ZDRV="${ONEDEV},${ONEFS},${ONEPUPFILE}"
      break
     fi
    done
   fi
   
   if [ "$ADRV" = "" ];then
    FND_FILES="`find /mnt/data${PSUBDIR} -maxdepth ${SEARCHDEPTH} -xdev -type f -iname ${ADRVSFS} | grep -v ' ' | sed -e 's%^/mnt/data%%' | tr '\n' ' '`"
    for ONEPUPFILE in $FND_FILES
    do
     if [ "$NAMETYPE" = "traditional" ];then
      ONEIDSTRING="$IDSTRING" #found file based on it's name only.
     else
      ONEFULLSIZE=`stat -c %s /mnt/data${ONEPUPFILE}`
      ONEORIGSIZE=`expr $ONEFULLSIZE - 32` #110422
      ONEIDSTRING="`dd if=/mnt/data${ONEPUPFILE} bs=1 skip=${ONEORIGSIZE} 2>/dev/null | sed -e 's%[^a-zA-Z0-9\.]%%g'`"
     fi
     if [ "$ONEIDSTRING" = "$IDSTRING" ];then
      ADRV="${ONEDEV},${ONEFS},${ONEPUPFILE}"
      echo -n " adrive" > /dev/console
      break
     fi
    done
   fi
  
   if [ "$YDRV" = "" ];then
    FND_FILES="`find /mnt/data${PSUBDIR} -maxdepth ${SEARCHDEPTH} -xdev -type f -iname ${YDRVSFS} | grep -v ' ' | sed -e 's%^/mnt/data%%' | tr '\n' ' '`"
    for ONEPUPFILE in $FND_FILES
    do
     if [ "$NAMETYPE" = "traditional" ];then
      ONEIDSTRING="$IDSTRING" #found file based on it's name only.
     else
      ONEFULLSIZE=`stat -c %s /mnt/data${ONEPUPFILE}`
      ONEORIGSIZE=`expr $ONEFULLSIZE - 32` #110422
      ONEIDSTRING="`dd if=/mnt/data${ONEPUPFILE} bs=1 skip=${ONEORIGSIZE} 2>/dev/null | sed -e 's%[^a-zA-Z0-9\.]%%g'`"
     fi
     if [ "$ONEIDSTRING" = "$IDSTRING" ];then
      YDRV="${ONEDEV},${ONEFS},${ONEPUPFILE}"
      echo -n " ydrive" > /dev/console
      break
     fi
    done
   fi
  
  fi #101103 moved up.
  echo "  IGNORE=$IGNORE PSUBDIR=$PSUBDIR SAVEPART=$SAVEPART VMLINUZ=$VMLINUZ PDEV1=$PDEV1 PUPSFS=$PUPSFS" >> /tmp/puppy-file-search.log #101127 for debugging.
        
  FND_PUPSAVES=""
  ONEFS_IS_LINUX=""
  case $ONEFS in
   ext2|ext3|ext4|reiserfs|minix|f2fs) ONEFS_IS_LINUX="Y" ;;
  esac
  if [ "$SAVEPART" ];then #see SAVEMARK above. 101103 modified logic.
   if [ "$SAVEPART" = "$ONEDEV" ];then
    if [ "$PSUBDIR" ];then
     #look in same subdir, then in '/' (maxdepth=1)...
     if [ -d /mnt/data${PSUBDIR} ]; then
      [ "$ONEFS_IS_LINUX" = "Y" ] && FND_PUPSAVES="`find /mnt/data${PSUBDIR} -maxdepth 1 -xdev -type d -iname ${DISTRO_FILE_PREFIX}save'*' | grep -v ' ' | sed -e 's%^/mnt/data%%' | tr '\n' ' '`"
      FND_PUPSAVES="${FND_PUPSAVES}`find /mnt/data${PSUBDIR} -maxdepth 1 -xdev -type f -iname ${DISTRO_FILE_PREFIX}save*.[234]fs | grep -v ' ' | sed -e 's%^/mnt/data%%' | tr '\n' ' '`"
     fi
    else
     [ "$ONEFS_IS_LINUX" = "Y" ] && FND_PUPSAVES="`find /mnt/data -maxdepth ${SEARCHDEPTH} -xdev -type d -iname ${DISTRO_FILE_PREFIX}save'*' | grep -v ' ' | sed -e 's%^/mnt/data%%' | tr '\n' ' '`"
     FND_PUPSAVES="${FND_PUPSAVES}`find /mnt/data -maxdepth ${SEARCHDEPTH} -xdev -type f -iname ${DISTRO_FILE_PREFIX}save*.[234]fs | grep -v ' ' | sed -e 's%^/mnt/data%%' | tr '\n' ' '`"
     [ -f /mnt/data/etc/rc.d/PUPSTATE ] && DEV2PUP="${ONEDEV}|${ONEFS}" #full save to different partition than boot. 100919 101103 ignore if installed in a subdir.
    fi
   fi
  else #101020
   if [ "$PSUBDIR" ];then
    #look in same subdir, then in '/' (maxdepth=1)...
    if [ -d /mnt/data${PSUBDIR} ]; then
     [ "$ONEFS_IS_LINUX" = "Y" ] && FND_PUPSAVES="`find /mnt/data${PSUBDIR} -maxdepth 1 -xdev -type d -iname ${DISTRO_FILE_PREFIX}save'*' | grep -v ' ' | sed -e 's%^/mnt/data%%' | tr '\n' ' '`"
     FND_PUPSAVES="${FND_PUPSAVES}`find /mnt/data${PSUBDIR} -maxdepth 1 -xdev -type f -iname ${DISTRO_FILE_PREFIX}save*.[234]fs | grep -v ' ' | sed -e 's%^/mnt/data%%' | tr '\n' ' '`"
    fi
   else
    [ "$ONEFS_IS_LINUX" = "Y" ] && FND_PUPSAVES="`find /mnt/data -maxdepth ${SEARCHDEPTH} -xdev -type d -iname ${DISTRO_FILE_PREFIX}save'*' | grep -v ' ' | sed -e 's%^/mnt/data%%' | tr '\n' ' '`"
    FND_PUPSAVES="${FND_PUPSAVES}`find /mnt/data -maxdepth ${SEARCHDEPTH} -xdev -type f -iname ${DISTRO_FILE_PREFIX}save*.[234]fs | grep -v ' ' | sed -e 's%^/mnt/data%%' | tr '\n' ' '`"
   fi
  fi
  [ "$FND_PUPSAVES" ] && echo "$ONEDEV $ONEFS $FND_PUPSAVES" >> /tmp/PUPSAVES
  
  #130513 if we find a rw f.s., create pupdesk.flg. only needed in PUPMODE=5, see /usr/sbin/quicksetup.
  if [ "$PRAMONLY" != "yes" -a $PUPDESKFLG -eq 1 ];then #130514 exclude. 130515
   if [ ! -f /tmp/RWPART ];then
    if [ "$LINUXFS" ];then
     RWPARTFLG=''
     case $ONEFS in
      ext2|ext3|ext4|reiserfs|minix|f2fs) RWPARTFLG="$(cat /proc/mounts | grep "/dev/${ONEDEV} " | grep ' rw,')" ;;
     esac
    else
     RWPARTFLG="$(cat /proc/mounts | grep "/dev/${ONEDEV} " | grep ' rw,')"
    fi
    [ "$RWPARTFLG" ] && echo -n "${ONEDEV}|${ONEFS}" > /tmp/RWPART #where we intend to create pupdesk.flg, see further down.
   fi
  fi
  
  #fix any improper shutdowns... fsckme.flg format: sda7,ext3,[/pupsave.2fs] (see rc.shutdown)
  FSCKME=""
  [ -f /mnt/data/fsckme.flg ] && FSCKME="`cat /mnt/data/fsckme.flg | tr ',' ' ' | tr '\n' ' '`" \
   && DEEPFSCK="yes"
  rm -f /mnt/data/fsckme.flg
  umntfunc /mnt/data
  [ "$FSCKME" ] && fsckme_func $FSCKME
 done
} #search_func

resize_pupsave_func() { #131225
	rm -f /mnt/dev_save/pupsaveresizenew.txt
    echo > /dev/console
    echo -n "Increasing $PUPSAVEFILE by $KILOBIG Kbytes, please wait..." >/dev/console
    dd if=/dev/zero bs=1024 count=$KILOBIG >> /mnt/dev_save$PUPSAVEFILEX #131225 
    sync
}
fsck_pupsave_func() {
    e2fsck -y -f $1
    resize2fs -pf $1 #no size, will fill all of file.
    sync
    check_status 0 #note, e2fsck gives an error even though it works. v2.21 maybe okay now.
    echo -n "...continuing with loading $PUPSAVEFILE..." > /dev/console
}

mnt_enc_pupsave_func() {
	echo >/dev/console
    echo "NOTICE: As you type your password nothing will be displayed on the screen."  >/dev/console
    echo "This is a security measure. Just type it in then press ENTER key..." >/dev/console
    echo -e "\\033[1;36m" >/dev/console #aqua-blue
    echo -n "Password: " >/dev/console
    echo -en "\\033[0;39m" >/dev/console
    oldIFS="$IFS"; IFS=
    read -s -r MYPASS #< /dev/console v403
    IFS="$oldIFS"
    if [ "$CRYPTO" = "-e aes" ];then #v3.98     
     echo "$MYPASS" | losetup -p 0 -e aes /dev/loop1 /mnt/dev_save$PUPSAVEFILE
    else
     echo "$MYPASS" | losetup -p 0 $CRYPTO /dev/loop1 /mnt/dev_save$PUPSAVEFILE
    fi
}

#pmedia= usbflash|usbhd|usbcd|ataflash|atahd|atacd|atazip|scsihd|scsicd|cd
[ $pmedia ] && PMEDIA=$pmedia #boot parameter, broad category of boot media. ex: cd.
[ $pdev1 ] && PDEV1=$pdev1    #boot parameter, partition have booted off. ex: hda3
[ $psubdir ] && PSUBDIR=$psubdir #boot parameter, directory for puppy files. ex: puppy220
[ $pkeys ] && PKEYS=$pkeys #boot parameter, keyboard layout w476
[ $psavemark ] && PSAVEMARK=$psavemark #100913 partition number that has/will-have save-file.

[ $PSUBDIR ] && [ "`echo -n "$PSUBDIR" | cut -c 1`" != "/" ] && PSUBDIR="/${PSUBDIR}" #add leading /.

#100915 requested by technosaurus (formats get changed further down)...
[ $pupsfs ] && PUPSFS=$pupsfs #format partition:<path><filename> ex: sda2:/wary071/wary_071.sfs
[ $zdrv ] && ZDRV=$zdrv #ex: sda2:/wary071/zdrv_071.sfs
[ $adrv ] && ADRV=$adrv
[ $ydrv ] && YDRV=$ydrv

[ $underdog ] && UNDERDOG=$underdog #120130 specify partition for Underdog Linux (refer also underdog.lnx).

#now supporting a boot menu...
RDSH=""
if [ "$pfix" ];then
 for ONEFIX in `echo -n "$pfix" | tr ',' ' '`
 do
  case $ONEFIX in
   ram)     PRAMONLY="yes";;      #run in ram only (do not load ${DISTRO_FILE_PREFIX}save).
   rdsh)    RDSH="yes";;          #exit to shell in initial ramdisk.
   rdsh0)   RDSH="0";;            #drop out early, before loading drivers.
   rdsh6)   RDSH="6";;            #w091027 drop out just before mount layerfs.
   nox)     PNOX="yes";;          #do not start X.
   clean)   PCLEAN="yes";;        #force version upgrade and cleanup.
   purge)   PPURGE="yes";;        #radical cleanup for broken system.
   copy)    PCOPY="yes";;         #copy .sfs files into ram.
   nocopy)  PNOCOPY="yes";;        #do not copy .sfs files into ram (default is copy if enough ram).
   fsck)    PFSCK="yes";;         #do a fsck of ${DISTRO_FILE_PREFIX}save file.
   [0-9]*)  PIGNORELAST=$ONEFIX;; #blacklist last $ONEFIX folders (multisession).
  esac
 done
fi

#for backwards naming compatibility... ex: idehd becomes atahd 101021: atacd,scsicd,usbcd to become just cd...
PMEDIA="`echo -n "$PMEDIA" | sed -e 's%ide%ata%' -e 's%sata%ata%' -e 's%.*cd$%cd%'`"

clear #clear the screen.
[ ! "$LOGLEVEL" ] && exec 1>/tmp/bootinit.log 2>&1 #remove o/p from console. v2.22 loglevel added.

export TZ='XXX-23' #100318 imaginary place right around the world east of Greenwich.
#...i think that this will give the most delayed time, so any file operations
#will not result in a future date after the correct time is set in the main puppy f.s.
#ref: http://www.gnu.org/s/libc/manual/html_node/TZ-Variable.html
#100427 crap, despite the help inside the hwclock applet, it doesn't accept long-options...
/bin/hwclock -s -l #set system time (based on hw clock set to local time).

#does this initrd have all the zdrv components inside it?...
ZDRVINIT='no'
[ `cat /lib/modules/$KERNELVER/modules.dep  | wc -l` -gt 200 ] && ZDRVINIT='yes'

#120216 /PUPPYKEYMAP inserted in initrd by quicksetup (in future, by Woof too)...
FONTMAP=""
[ -f /PUPPYKEYMAP ] && [ ! "$PKEYS" ] && PKEYS="`cat /PUPPYKEYMAP`" #allow kernel boot param to override.
if [ "$PLANG" ];then
 if [ ! "$PKEYS" ];then
  #try to set PKEYS to match the language. first 2 letters of PLANG...
  PKEYS=${PLANG:0:2} #rough as guts, assign first 2 chars of PLANG to PKEYS.
  case $PLANG in
   en*) PKEYS=us ;;
  esac
 fi
 #120216 L18L suggests load these, instead of what is below...
 case $PLANG in
  en*) echo ;;
  ar*|iw*) #L18L no Greek
   setfont /lib/consolefonts/LatArCyrHeb-16.psfu.gz -C /dev/tty1
   FONTMAP='LatArCyrHeb-16.psfu'
  ;;
  ru*) #vkvkvk for ru
   zcat /lib/consolefonts/ter-u16n.psf.gz | loadfont
   FONTMAP='ter-u16n.psf'
  ;;
  *) #L18L All European languages; new default ?!
   zcat /lib/consolefonts/LatGrkCyr-8x16.psfu.gz | loadfont
   FONTMAP='LatGrkCyr-8x16.psfu'
  ;;
 esac
fi

#091122 load keyboard layout if PKEYS boot param...
STATUS=0
VFAT_OUT_PARAM='shortname=mixed,quiet,utf8' #140102 rodin.s: added utf8 for flash drive to be mounted with utf-8 if boot is done from flash drive 
CODEPAGE=""
KMAP=""
if [ "$PKEYS" ];then
 if [ ! -f /lib/keymaps/${PKEYS}.gz ];then
  PKEYS="`ls -1 /lib/keymaps/${PKEYS}*.gz | head -n 1 | rev | cut -f 1 -d '/' | cut -f 2 -d '.' | rev`"
 fi
 if [ -f /lib/keymaps/${PKEYS}.gz ];then
  echo "Loading '${PKEYS}' keyboard layout..." >/dev/console
  KMAP="$PKEYS"
  zcat /lib/keymaps/${PKEYS}.gz | loadkmap ; STATUS=$(($STATUS + $?))
  case $PKEYS in #note, same code in /etc/rc.d/rc.country, /usr/sbin/input-wizard and init.
   de*|be*|br*|dk*|es*|fi*|fr*|it*|no*|se*|pt*)
    modprobe nls_cp850
    [ ! "$PLANG" ] && FONTMAP="lat1-12.psfu" #120216
    CODEPAGE="850"
    VFAT_OUT_PARAM="$OUT_PARAM"',codepage=850'
   ;;
   cz*|hu*|pl*|ro*|sk*|croat*|slovene*)
    modprobe nls_cp852
    modprobe nls_iso8859-2
    [ ! "$PLANG" ] && FONTMAP="lat2-12.psfu" #120216
    CODEPAGE="852"
    VFAT_OUT_PARAM="$OUT_PARAM"',codepage=852,iocharset=iso8859-2'
   ;;
  esac
  if [ ! "$PLANG" ];then #120216 old behaviour.
   if [ "$FONTMAP" ];then #100520 fix syntax error...
    zcat /lib/consolefonts/${FONTMAP}.gz | loadfont
    STATUS=$(($STATUS + $?))
   fi
  fi
 else
  STATUS=1
 fi
 check_status $STATUS
fi

[ "$RDSH" = "0" ] && exec /bin/sh >/dev/console 2>&1 #w091222

###################LOAD MODULES TO ACCESS DRIVES#####################
echo -n "Loading drivers needed to access disk drives" > /dev/console #STEP ONE

#100214 one config of 2.6.33 has base floppy and ps/2 mouse support not builtin...
[ "`modinfo floppy 2>/dev/null`" != "" ] && modprobe floppy > /dev/null 2>&1
[ "`modinfo psmouse 2>/dev/null`" != "" ] && modprobe psmouse

#w462 if present, load it. enables recognition of drives attached to parallel port.
[ "`modinfo ppa 2>/dev/null`" != "" ] && modprobe ppa #also loads parport.ko

ELSPCI="`elspci -l`" #jesses great little utility.
#v403 pcmcia drive support. i think this may need extra delay though...
if [ "`echo "$ELSPCI" | grep '060700'`" != "" ];then
 modprobe yenta_socket
 #...may have to add on a couple of seconds, need to test with a pcmcia drive.
 #v412 yeah, my pccard-usb adaptor needs delay before elspci recognises 0C0310 (ohci-hcd) interface...
 echo -n "." > /dev/console
 sleep 2
fi
#v423 k2.6.29.6 dmesg has warning that ehci-hcd should load before uhci-hcd and ohci-hid...
[ "`echo "$ELSPCI" | grep '0C0320'`" != "" ] && modprobe ehci-hcd 2>/dev/null

#121227 extra f.s. drivers may be modules (quirky6)... 130216 add f2fs...
for ONEFSMOD in ext2 ext3 ext4 fat msdos vfat ntfs reiserfs udf f2fs
do
 [ "`modinfo $ONEFSMOD 2>/dev/null`" != "" ] && modprobe $ONEFSMOD
done

echo -n "." > /dev/console
MODALIASES="`cat /sys/bus/pci/devices/*/modalias`" #important, save to variable before loop.
for ONEMODALIAS in $MODALIASES
do
  modprobe $ONEMODALIAS 2>/dev/null #-v means verbose.
  #[ $? -eq 0 ] && echo -n "." > /dev/console
done

#091222 some mmc/sd interfaces need this...
#(above code loop may have loaded sdhci/sdhci_pci or tifm_core/tifm_7xx1)
[ "`lsmod | grep '^sdhci'`" != "" ] && modprobe mmc_core && modprobe mmc_block
[ "`lsmod | grep '^tifm'`" != "" ] && modprobe mmc_core && modprobe mmc_block && modprobe tifm_sd

modprobe squashfs
modprobe sr_mod > /dev/null 2>&1 #v3.93 now built-in to kernel.

#filesystems...
modprobe nls_cp437 2>/dev/null    #needed by windows filesystems.
modprobe nls_iso8859-1 2>/dev/null #needed by linux filesystems.
modprobe $LAYERFS #unionfs or aufs.
modprobe fuse #for ntfs-3g driver.

#110126 define ATADRIVES as all internal ide/pata/sata (and mmc) drives (not usb), except optical...
#110710 rewritten to handle kernel with usb driver built-in...
ALLDRVS0="`find /sys/block -maxdepth 1 -name 'mmc*' -o -name 'sd*' -o -name 'sr*' | xargs -l readlink 2>/dev/null | grep -v '/usb[0-9]' | rev | cut -f 1 -d '/' | rev`" #all *except* usb!
ALLDRVS="`echo "$ALLDRVS0" | tr '\n' ' '`" #all *except* usb!
[ "$ALLDRVS" = " " ] && ALLDRVS=""
ATADRIVES="`echo "$ALLDRVS0" | grep -v '^sr' | tr '\n' ' '`"
[ "$ATADRIVES" = " " ] && ATADRIVES=""
ATAOPTICALDRIVES="`echo "$ALLDRVS0" | grep '^sr' | tr '\n' ' '`"
[ "$ATAOPTICALDRIVES" = " " ] && ATAOPTICALDRIVES=""
if [ -e /proc/ide ];then
 for ONEIDE in `ls -1 /proc/ide | grep '^hd' | tr '\n' ' '`
 do
  ALLDRVS="${ALLDRVS}${ONEIDE} "
  if [ "`cat /proc/ide/${ONEIDE}/media`" = "cdrom" ];then
   ATAOPTICALDRIVES="${ATAOPTICALDRIVES}${ONEIDE} "
  else
   ATADRIVES="${ATADRIVES}${ONEIDE} "
  fi
 done
 ALLDRVS0="`echo -n "$ALLDRVS" | tr ' ' '\n'`"
fi
ATADRIVES0="`echo -n "$ATADRIVES" | tr ' ' '\n'`"
touch /tmp/ATADRIVES0 #110509 fix for LF only messes up grep later.
[ "$ATADRIVES" != "" ] && echo "$ATADRIVES0" > /tmp/ATADRIVES0 #110205 broken busybox grep -F. 110509
ATAOPTICALDRIVES0="`echo -n "$ATAOPTICALDRIVES" | tr ' ' '\n'`"
touch /tmp/ALLDRVS0
[ "$ALLDRVS" ] && echo "$ALLDRVS0" > /tmp/ALLDRVS0 #all drives *except* usb.

PCPARTSALL="`probepart_init -k`"
PCPARTS0="`echo "$PCPARTSALL" | grep '^/dev/' | cut -f 1-2 -d '|'  | grep -E 'f2fs|udf|iso9660|ext2|ext3|ext4|reiserfs|msdos|vfat|minix|ntfs' | sed -e 's%/dev/%%'`" #ex: sda1|vfat 130128 add udf. 130216 add f2fs.
LESSPARTS0="$PCPARTS0"
#120328 could have iso9660 f.s. booting off a non-optical drive (see BootFlash). exclude /dev/mmc ...
OPTICALDRIVES0="`echo "$PCPARTS0" | grep -E 'iso9660|udf' | grep -v '^mmc' | cut -f 1 -d '|'`" #ex: sr0  130128 add udf.
touch /tmp/OPTICALDRIVES0 #110509 fix for using with grep.
[ "$OPTICALDRIVES0" != "" ] && echo "$OPTICALDRIVES0" > /tmp/OPTICALDRIVES0 #110509 fix

echo "ALLDRVS=$ALLDRVS " >> /tmp/puppy-file-search.log #for debugging.

if [ "`lsmod | grep -E '^uhci|^ohci|^ehci'`" != "" ];then
 /sbin/wait4usb_classic & #110425
else
 /sbin/wait4usb & #110710 kernel has builtin hid and usb drivers, and without or with my usb-storage patch.
fi

check_status 0 #END STEP ONE
##############END MODULE LOADING TO ACCESS DRIVES####################

#######################FINDING PUPPY FILES###########################
echo -n "Searching for Puppy files..." > /dev/console #STEP TWO

PUPMODE=0
touch /tmp/PUPSAVES
KERNELNAME='vmlinuz'

#100915 technosaurus recommendation (see above)...
if [ "$PUPSFS" ];then
 DEV="`echo "$PUPSFS" | cut -f 1 -d ':'`"
 FS="`echo "$PCPARTS0" | grep "${DEV}|" | cut -f 2 -d '|'`"
 SPEC="`echo -n "$PUPSFS" | cut -f 2 -d ':'`"
 PUPXXXSFS="`basename $SPEC`"
 [ "$PSUBDIR" = "" ] && PSUBDIR="`dirname $SPEC`"
 [ "$PSUBDIR" = "/" ] && PSUBDIR=""
 PUPSFS="${DEV},${FS},${SPEC}"
 LESSPARTS0="${DEV}|${FS}" #110425
fi
if [ "$ZDRV" ];then
 DEV="`echo "$ZDRV" | cut -f 1 -d ':'`"
 FS="`echo "$PCPARTS0" | grep "${DEV}|" | cut -f 2 -d '|'`"
 SPEC="`echo -n "$ZDRV" | cut -f 2 -d ':'`"
 ZDRVSFS="`basename $SPEC`"
 ZDRV="${DEV},${FS},${SPEC}"
fi

if [ "$ADRV" ];then
 DEV="`echo "$ADRV" | cut -f 1 -d ':'`"
 FS="`echo "$PCPARTS0" | grep "${DEV}|" | cut -f 2 -d '|'`"
 SPEC="`echo -n "$ADRV" | cut -f 2 -d ':'`"
 ADRVSFS="`basename $SPEC`"
 ADRV="${DEV},${FS},${SPEC}"
fi

if [ "$YDRV" ];then
 DEV="`echo "$YDRV" | cut -f 1 -d ':'`"
 FS="`echo "$PCPARTS0" | grep "${DEV}|" | cut -f 2 -d '|'`"
 SPEC="`echo -n "$YDRV" | cut -f 2 -d ':'`"
 YDRVSFS="`basename $SPEC`"
 YDRV="${DEV},${FS},${SPEC}"
fi

#first look inside initrd...
[ -f /${PUPXXXSFS} ] && PUPSFS="rootfs,rootfs,/${PUPXXXSFS}"
[ -f /${ZDRVSFS} ] && ZDRV="rootfs,rootfs,/${ZDRVSFS}"
[ -f /${ADRVSFS} ] && ADRV="rootfs,rootfs,/${ADRVSFS}"
[ -f /${YDRVSFS} ] && YDRV="rootfs,rootfs,/${YDRVSFS}"

search_func ata #110425

while [ ! -e /tmp/flag-usb-ready ];do #110710 wait for usb process to complete.
 usleep 250000 #microseconds
done

if [ -s /tmp/flag-usb-ready ];then #110710 has stuff in it if usb drives exist.

 ALLDRVS="`ls -1 /sys/block | grep -E '^scd|^sd|^mmc|^sr' | tr '\n' ' '`" #110204
 [ "$ALLDRVS" = " " ] && ALLDRVS=""
 [ -e /proc/ide ] && ALLDRVS="${ALLDRVS}`ls -1 /proc/ide | grep '^hd' | tr '\n' ' '`" #110204 ex: sda sdb sr0 hda
 ALLDRVS0="`echo -n "$ALLDRVS" | tr -s ' ' | tr ' ' '\n'`" #110205
 echo "$ALLDRVS0" > /tmp/ALLDRVS0 #110205
 
 PCPARTSALL="`probepart_init -k`"
 PCPARTS0="`echo "$PCPARTSALL" | grep '^/dev/' | cut -f 1-2 -d '|'  | grep -E 'f2fs|udf|iso9660|ext2|ext3|ext4|reiserfs|msdos|vfat|minix|ntfs' | sed -e 's%/dev/%%'`" #ex: sda1|vfat  130128 add udf. 130216 add f2fs.
 LESSPARTS0="$PCPARTS0"
 #120328 could have iso9660 f.s. booting off a usb flash/hard drive (see BootFlash). exclude /dev/sd and /dev/mmc ...
 OPTICALDRIVES0="`echo "$PCPARTS0" | grep -E 'iso9660|udf' | grep -v -E '^sd|^mmc' | cut -f 1 -d '|'`" #ex: sr0  130128 add udf.
 touch /tmp/OPTICALDRIVES0 #fix
 [ "$OPTICALDRIVES0" ] && echo "$OPTICALDRIVES0" > /tmp/OPTICALDRIVES0 #fix
 echo "ALLDRVS=$ALLDRVS " >> /tmp/puppy-file-search.log
 PUPSFS_OPT=""
 if [ "$PUPSFS" ]; then
   FS=$(echo $PUPSFS | cut -s -f2 -d',')
   echo $FS | grep -q -E 'iso9660|udf' && PUPSFS_OPT=$PUPSFS && PUPSFS=""
 fi
 if [ "$VMLINUZ" = "" -o "$PUPSFS" = "" -o "$SAVEPART" = "" ];then
  search_func usb
 fi
 [ "$PUPSFS" ] || PUPSFS=$PUPSFS_OPT
fi

cp -f /tmp/PUPSAVES /tmp/PUPSAVES-complete #101127 for debugging.

#110116 jamesbond: for netboot, PDEV1 is empty, so don't want to fail here...
[ "$PUPSFS" = "" ] && DROPOUT="${PUPXXXSFS}"
if [ "$DROPOUT" ];then
 echo -en "\\033[1;31m" >/dev/console #31=red
 echo -n "${DROPOUT} not found. Dropping out to initial-ramdisk console..." >/dev/console
 /bin/echo -e "\\033[0;39m" >/dev/console
 exec /bin/sh >/dev/console 2>&1
fi

if [ "$VMLINUZ" = "" ];then #101103 maybe network boot, no local vmlinuz
 #well, to get this far, PDEV1 has been supplied.
 #110116 jamesbond,shinobar: no, for netboot, PDEV1 is empty, add test for $PDEV1...
 [ "$DEV1FS" = "" -a "$PDEV1" != "" ] && DEV1FS="`echo "$LESSPARTS0" | grep "${PDEV1}|" | cut -f 2 -d '|'`"
 BOOTDRV="`echo -n "$PDEV1" | grep -o -f /tmp/ALLDRVS0`" #110205 ex: sda1 becomes sda.
 VMLINUZ='vmlinuz'
fi

PUPMODE=`expr $PUPMODE + 4` #puppy.sfs (PUPXXXSFS) exists.

#if pupsave file not already found, choose it here...
if [ ! "$PUPSAVE" ];then
 if [ "$PRAMONLY" != "yes" ];then
  if [ "$IGNORE" = "optical" ];then #narrow it down...
   #not booting off optical drive.
   grep "${PSUBDIR}/" /tmp/PUPSAVES > /tmp/PUPSAVES2 #note: need this as above probing may have got some invalid hits.
   if [ "$SAVEPART" ];then #set by file SAVEMARK, see above.
    grep "${SAVEPART} " /tmp/PUPSAVES2 > /tmp/PUPSAVES
   else #it must be in the boot partition...
    grep "${PDEV1} " /tmp/PUPSAVES2 > /tmp/PUPSAVES
   fi
  fi
  
  if [ -s /tmp/PUPSAVES ];then #100922
   touch /tmp/PUPSAVE2SFSS #so does not spit any erroros if not there
   cat /tmp/PUPSAVES |
   while read ONELINE
   do
    ONEDEV="`echo -n "$ONELINE" | cut -f 1 -d ' '`"
    ONEFS="`echo -n "$ONELINE" | cut -f 2 -d ' '`"
    ONEPUPSAVES="`echo -n "$ONELINE" | cut -f 3-99 -d ' '`"
    for ONEPUPSAVE in $ONEPUPSAVES
    do
     echo "${ONEDEV},${ONEFS},${ONEPUPSAVE}" >> /tmp/PUPSAVE2SFSS
    done
   done
   NUMPUPSAVES=`cat /tmp/PUPSAVE2SFSS | wc -l`
   if [ $NUMPUPSAVES -eq 1 ];then
    PUPSAVE="`cat /tmp/PUPSAVE2SFSS`"
   else
    CNTSAVE=1
    echo -e "\\033[1;36m" >/dev/console #36=aquablue
    echo "Type a number to choose which personal file to use:" > /dev/console
    echo "0  none" > /dev/console
    for ONECHOICE in `cat /tmp/PUPSAVE2SFSS | tr '\n' ' '`
    do
     ONEFILE="`echo -n "$ONECHOICE" | cut -f 3 -d ','`"
     ONEPART="`echo -n "$ONECHOICE" | cut -f 1 -d ','`"
     echo -e "${CNTSAVE}  ${ONEPART}\\033[10G${ONEFILE}" > /dev/console #10 means move to that column.
     CNTSAVE=`expr $CNTSAVE + 1`
    done
    echo -en "\\033[0;39m" >/dev/console
    read NUMSAVE
    [ $NUMSAVE -ne 0 ] && PUPSAVE="`cat /tmp/PUPSAVE2SFSS | tr '\n' ' ' | cut -f $NUMSAVE -d ' '`"
   fi
  fi
  
 fi
 [ "$PUPSAVE" ] && PUPMODE=`expr $PUPMODE + 8`
fi

#refine the PUPMODE...
#if a ${DISTRO_FILE_PREFIX}save.2fs was not found, perhaps boot partition has a full install of puppy...
[ ! "$PUPSAVE" ] && [ "$DEV1PUP" = "yes" -o "$DEV2PUP" != "" ] && PUPMODE=`expr $PUPMODE + 2`
#do we want a tmpfs top layered-fs layer? (set bit-0 of PUPMODE)...
#only if ${DISTRO_FILE_PREFIX}save.2fs (or PDEV1 for DEV1PUP=yes, or first boot) on a flash drive, usb or internal...
case $PUPMODE in
 4) #so far have only got a puppy.sfs. this is first boot or pfix=ram.
  PUPMODE=5 #`expr $PUPMODE + 1` #yes, want tmpfs top layer (PUPMODE=5).
 ;;
 6) #4=puppy.sfs found, 2=session saved to entire partition. total=6
    #note: session saved in boot partition, or other specified by SAVEMARK (DEV2PUP).
  DRVSAVE="`echo -n "$PDEV1" | sed -e 's/[0-9]*$//' -e 's/p$//'`" #ex: sda   110126 mmcblk0p1 becomes mmcblk0
  REMOVABLEDRVSAVE="`cat /sys/block/$DRVSAVE/removable`"
  [ "$REMOVABLEDRVSAVE" = "1" -a  "$PMEDIA" != "usbhd" ] && PUPMODE=7  #110116 shinobar.
  #v3.96 Classmate laptop has internal usb flash, so really want the tmpfs layer...
  # puppyinstaller created 'pmedia=usbflash' for the extlinux full hd install...
  [ "$PMEDIA" = "usbflash" ] && PUPMODE=7
 ;;
 12) #4=puppy.sfs found, 8=${DISTRO_FILE_PREFIX}save.2fs found.  total=12
  DRVSAVE="`echo -n "$PUPSAVE" | cut -f 1 -d ',' | sed -e 's/[0-9]*$//' -e 's/p$//'`" #ex: sda  110126 mmcblk0p1 becomes mmcblk0
  REMOVABLEDRVSAVE="`cat /sys/block/$DRVSAVE/removable`"
  [ "$REMOVABLEDRVSAVE" = "1"  -a  "$PMEDIA" != "usbhd" ] && PUPMODE=13  #110116 shinobar.
  [ "$PMEDIA" = "usbflash" ] && PUPMODE=13 #v404 fix classmate, with internal usb flash.
  [ "$PMEDIA" = "ataflash" ] && PUPMODE=13 #w019 constrain writes to internal flash drv.
 ;;
 76) #v3.01 64+8+4 multisession cd.
  PUPMODE=77 #yes, want tmpfs top layer.
 ;;
esac

check_status 0
########################END FINDING PUPPY FILES############################

##########################LOADING PUPPY FILES###########################
RAMSIZE=`free | grep -o 'Mem: .*' | tr -s ' ' | cut -f 2 -d ' '` #total physical ram (less shared video). 110405
CRYPTO=""
STATUS=0

#decide the mount-points...
#unionfs layers:            RW (top)      RO1             RO2              PUPMODE
#full install, flash drive: tmpfs         PDEV1                            3
#First boot (or pfix=ram):  tmpfs                         pup_xxx.sfs      5
#pup_save is a partition:   PDEV1                         pup_xxx.sfs      6
#ditto, but flash drive:    tmpfs         PDEV1           pup_xxx.sfs      7
#Normal running puppy:      pup_save.3fs                  pup_xxx.sfs      12
#ditto, but flash drive:    tmpfs         pup_save.3fs    pup_xxx.sfs      13
#Multisession cd/dvd:       tmpfs         folders(tmpfs2) pup_xxx.sfs      77
CREATETMPFS="";CREATEPDEV1="";CREATEPUPXXXSFS="";CREATEPUPSAVE2FS="";CREATEFOLDERS=""
case $PUPMODE in #w003 changed some save-layer to 'ro+wh' so that whiteouts files are recognised...
 3)  CREATETMPFS="/pup_rw";CREATEPDEV1="/pup_ro1"
     OLDFILESMNTPT="/pup_ro1";NEWFILESMNTPT="/pup_ro1";UMNTRW="/pup_rw=rw:";UMNTRO0="/pup_ro1=ro+wh:";;
 5)  CREATETMPFS="/pup_rw";CREATEPUPXXXSFS="/pup_ro2"
     OLDFILESMNTPT="";NEWFILESMNTPT="/pup_ro2";UMNTRW="/pup_rw=rw:";UMNTRO1="/pup_ro2=ro";;
 6)  CREATEPDEV1="/pup_rw";CREATEPUPXXXSFS="/pup_ro2"
     OLDFILESMNTPT="/pup_rw";NEWFILESMNTPT="/pup_ro2";UMNTRW="/pup_rw=rw:";UMNTRO1="/pup_ro2=ro";;
 7)  CREATETMPFS="/pup_rw";CREATEPDEV1="/pup_ro1";CREATEPUPXXXSFS="/pup_ro2"
     OLDFILESMNTPT="/pup_ro1";NEWFILESMNTPT="/pup_ro2";UMNTRW="/pup_rw=rw:";UMNTRO0="/pup_ro1=ro+wh:";UMNTRO1="/pup_ro2=ro";;
 12) CREATEPUPSAVE2FS="/pup_rw";CREATEPUPXXXSFS="/pup_ro2"
     OLDFILESMNTPT="/pup_rw";NEWFILESMNTPT="/pup_ro2";UMNTRW="/pup_rw=rw:";UMNTRO1="/pup_ro2=ro";;
 13) CREATETMPFS="/pup_rw";CREATEPUPSAVE2FS="/pup_ro1";CREATEPUPXXXSFS="/pup_ro2"
     OLDFILESMNTPT="/pup_ro1";NEWFILESMNTPT="/pup_ro2";UMNTRW="/pup_rw=rw:";UMNTRO0="/pup_ro1=ro+wh:";UMNTRO1="/pup_ro2=ro";;
 77) CREATETMPFS="/pup_rw";CREATEFOLDERS="/pup_ro1";CREATEPUPXXXSFS="/pup_ro2"
     OLDFILESMNTPT="/pup_ro1";NEWFILESMNTPT="/pup_ro2";UMNTRW="/pup_rw=rw:";UMNTRO0="/pup_ro1=ro+wh:";UMNTRO1="/pup_ro2=ro";;
 *)  RDSH="yes";; #precaution.
esac

if [ "$CREATEPDEV1" != "" ];then
 if [ "$DEV2PUP" ];then #100915
  DEV="`echo -n "$DEV2PUP" | cut -f 1 -d '|'`"
  FS="`echo -n "$DEV2PUP" | cut -f 2 -d '|'`"
 else #session saved to boot partition.
  DEV="$PDEV1"
  FS="$DEV1FS"
 fi
 [ "`echo "$FS" | grep 'ext[234]'`" != "" ] && echo "/dev/$DEV $CREATEPDEV1 $FS defaults  1 1" >> /etc/fstab #v2.21
 if [ "$PFSCK" = "yes" -a "$pdev1" = "" ]; then
  FSCKME="$DEV $FS"
  fsckme_func $FSCKME
 fi
 mount -t $FS /dev/$DEV $CREATEPDEV1
 check_status $?
 #save is not a ${DISTRO_FILE_PREFIX}save file, but a partition on a layered-fs layer...
 if [ "$CREATEPDEV1" = "/pup_rw" -o "$CREATEPDEV1" = "/pup_ro1" ];then #v2.20b
  SMNTPT="$CREATEPDEV1"
  PUPSAVE="$DEV,$FS,/" #deliberately left last param as only /.
 fi
fi

if [ "$CREATEPUPSAVE2FS" != "" ];then
 PUPSAVEDEV="`echo -n "$PUPSAVE" | cut -f 1 -d ','`"
 PUPSAVEFS="`echo -n "$PUPSAVE" | cut -f 2 -d ','`"
 PUPSAVEFILE="`echo -n "$PUPSAVE" | cut -f 3 -d ','`"
 #normal ${DISTRO_FILE_PREFIX}save.2fs file. just mount it from where it is...
 echo -n "Loading personal file $PUPSAVEFILE ($PUPSAVEDEV)..." > /dev/console 
 [ "`echo "$PUPSAVEFS" | grep 'ext[234]'`" != "" ] && echo "/dev/$PUPSAVEDEV /mnt/dev_save $PUPSAVEFS defaults  1 1" >> /etc/fstab #v2.21
 mntfunc $PUPSAVEFS /dev/$PUPSAVEDEV /mnt/dev_save noatime #-t $PUPSAVEFS -o noatime /dev/$PUPSAVEDEV /mnt/dev_save
 if [ $? -eq 0 ];then
  SMNTPT="/mnt/dev_save"
  #is the ${DISTRO_FILE_PREFIX}save encrypted?...
  if [ ! "`echo "$PUPSAVEFILE" | grep '_crypt'`" = "" ];then
   case $PUPSAVEFILE in 
    *cryptx*) #see /etc/rc.d/rc.shutdown.
     CRYPTO='-E 1' #v2.16final '-e xor' --bug, loads xor.ko which is something else.
     modprobe cryptoloop
     ;;
    *)
     CRYPTO='-e aes'
     modprobe cryptoloop
     modprobe aes_generic 2>/dev/null #v407 aes name change.
     modprobe aes 2>/dev/null #for older kernel <2.6.25
     modprobe crypto_blkcipher 2>/dev/null #v407 blkcipher name change.
     modprobe blkcipher 2>/dev/null #old kernel.
     modprobe cbc
     ;;
   esac
  fi
  if [ -d /mnt/dev_save${PUPSAVEFILE} ]; then
   # Check partition if user calls for savefile check
   if [ "$PFSCK" = "yes" -a "$pdev1" = "" ]; then
    umount /mnt/dev_save
    MOUNTED=$(cat /proc/mounts | grep $PUPSAVEDEV |cut -f 2 -d ' ')
    MNTOPT=$(cat /proc/mounts | grep $PUPSAVEDEV |cut -f 4 -d ' ')
    umount  $MOUNTED
    FSCKME="$(echo $PUPSAVE | tr ',' ' ')"
    fsckme_func $FSCKME
    mntfunc $PUPSAVEFS /dev/$PUPSAVEDEV $MOUNTED $MNTOPT
    mntfunc $PUPSAVEFS /dev/$PUPSAVEDEV /mnt/dev_save noatime
   fi
   rm -r -f "$CREATEPUPSAVE2FS"
   ln -s /mnt/dev_save${PUPSAVEFILE} $CREATEPUPSAVE2FS
  elif [ "$CRYPTO" != "" ] ; then
   echo "" >/dev/console
   echo "Mounting encrypted $PUPSAVEFILE..." > /dev/console
   while true; do
    #note, cryptoloop does not work with jounalled fs, hence have to use ext2 only.

    # if pupsave increase requested
    if [ -f /mnt/dev_save/pupsaveresizenew.txt ];then #131225 changed to function
     . /mnt/dev_save/pupsaveresizenew.txt
     if echo ${PUPSAVEFILEX}|grep -q ${PUPSAVEFILE##*/} ;then #131231
      if [ ! -e /bin/e2fsck ];then
       echo -e -n "\\033[1;31m SORRY, cannot resize ${PUPSAVEFILE} \\033[0;39m" > /dev/console #31=red
       rm -f /mnt/dev_save/pupsaveresizenew.txt
      else
       resize_pupsave_func #131225
      fi # end pupsave increase, old code removed 131225
      mnt_enc_pupsave_func
      fsck_pupsave_func /dev/loop1 #131225
     else
      mnt_enc_pupsave_func
     fi #131225
    else
      mnt_enc_pupsave_func
    fi

    echo "/dev/loop1 $CREATEPUPSAVE2FS ext2 defaults  1 1" >> /etc/fstab #v2.21
    [ "$PFSCK" = "yes" ] && fsckme_func loop1 ext2 #100318 however, commented out as there was an old not that f.s. check on an encrypted pupsave is broken. #140106 SFR: re-enabled
    mount -t ext2 -o noatime,rw /dev/loop1 $CREATEPUPSAVE2FS #only ext2 allowed.
    MNTSTAT=$?
    if [ "$MNTSTAT" = "0" ] ; then
     echo -n "...successfully mounted" >/dev/console
     break
    else 
     [ ! -e /bin/e2fsck ] && break #111120
     echo -en "\\033[1;31m" >/dev/console #31=red
     echo "Can't mount file, press ENTER key to try again." >/dev/console
     echo "Or, any other char then ENTER for f.s. check then try again." > /dev/console
     echo -n "Or, for developers type 'quit' to drop out to console: " > /dev/console
     echo -en "\\033[0;39m" >/dev/console
     read crypttryagain
     echo > /dev/console
     [ "$crypttryagain" = "quit" ] &&  exec /bin/sh >/dev/console 2>&1 #v3.98
     [ "$crypttryagain" != "" ] && e2fsck -y -f /dev/loop1 >/dev/console
     losetup -d /dev/loop1
    fi
   done
  else #pupsave not encrypted.
   # if pupsave increase requested
   if [ -f /mnt/dev_save/pupsaveresizenew.txt ];then #131225 changed to function
    . /mnt/dev_save/pupsaveresizenew.txt
    if echo ${PUPSAVEFILEX}|grep -q ${PUPSAVEFILE##*/} ;then
     if [ ! -e /bin/e2fsck ];then
      echo -e -n "\\033[1;31m SORRY, cannot resize ${PUPSAVEFILE} \\033[0;39m" > /dev/console #31=red
      rm -f /mnt/dev_save/pupsaveresizenew.txt
     else
      resize_pupsave_func #131225
      fsck_pupsave_func /mnt/dev_save$PUPSAVEFILE #131225
     fi
    fi
   fi
   # end pupsave increase
   losetup /dev/loop1 /mnt/dev_save${PUPSAVEFILE}
   SFFS='ext'`echo -n "$PUPSAVEFILE" | rev | cut -c 3`
   echo "/dev/loop1 $CREATEPUPSAVE2FS $SFFS defaults  1 1" >> /etc/fstab
   [ "$PFSCK" = "yes" ] && fsckme_func loop1 $SFFS #100318
   mount -t $SFFS -o noatime /dev/loop1 $CREATEPUPSAVE2FS
   if [ $? -ne 0 ];then
    if [ -e /bin/e2fsck ];then #111120
     e2fsck -y -f /dev/loop1 > /dev/console #-y answer yes to all repair questions.
     mount -t $SFFS -o noatime /dev/loop1 $CREATEPUPSAVE2FS
    fi
   fi
  fi
 fi
 STATUS=$? #101028
 check_status $STATUS

 #101028 ask if upgrading save-file...
 if [ $STATUS -eq 0 ];then
  if [ $PUPMODE -eq 12 -o $PUPMODE -eq 13  ];then #4+8 or 4+8+1
   OLDDISTRO_VERSION="`grep '^DISTRO_VERSION' $CREATEPUPSAVE2FS/etc/DISTRO_SPECS | cut -f 2 -d '=' | cut -f 2 -d "'" | cut -f 2 -d '"' | cut -f 1 -d ' '`" #110422
   if vercmp ${DISTRO_VERSION} gt ${OLDDISTRO_VERSION} ;then #110422
    if [ "$NUMPUPSAVES" != "0" ];then #save-file(s) found.
     echo -e "\\033[1;36m" >/dev/console #36=aquablue
     echo "This save-file was last used with version $OLDDISTRO_VERSION of Puppy." >/dev/console
     echo "Hit the ENTER key only if it is okay to upgrade this file, or to not use it and boot up in RAM only type any other printable character."  >/dev/console
     echo -n "ENTER only to upgrade: "  >/dev/console
     echo -en "\\033[0;39m" >/dev/console
     read noupgradesf
     if [ "$noupgradesf" != "" ];then
      echo -en "\\033[1;35m" >/dev/console #35=purple
      echo "Backing off, not using save-file, booting in RAM only, PUPMODE=5..." >/dev/console
      echo -en "\\033[0;39m" >/dev/console
      sync
      if [ -L "$CREATEPUPSAVE2FS" ]; then
       rm -f "$CREATEPUPSAVE2FS" #get rid of save-folder
       mkdir $CREATEPUPSAVE2FS
      else
       umount $CREATEPUPSAVE2FS #unmount the save-file.
      fi
      PUPMODE=5
      CREATETMPFS="";CREATEPDEV1="";CREATEPUPXXXSFS="";CREATEPUPSAVE2FS="";CREATEFOLDERS=""
      CREATETMPFS="/pup_rw";CREATEPUPXXXSFS="/pup_ro2"
      OLDFILESMNTPT="";NEWFILESMNTPT="/pup_ro2";UMNTRW="/pup_rw=rw:";UMNTRO1="/pup_ro2=ro"
     fi
    fi
    #check if puppy.sfs copied to same place as save-file...
    if [ "`echo -n "$BOOTDRV" | grep -f /tmp/OPTICALDRIVES0`" != "" ];then #110205 booting off cd.
     if [ "$CREATEPUPSAVE2FS" ];then #did not do the backoff above.
      xPUPSFSDEV="`echo -n "$PUPSFS" | cut -f 1 -d ','`" #checking puppy.sfs file.
      xPUPSFSFS="`echo -n "$PUPSFS" | cut -f 2 -d ','`"
      xPUPSFSFILE="`echo -n "$PUPSFS" | cut -f 3 -d ','`"
      basepupsfs="`basename $xPUPSFSFILE`"
      if [ "`echo -n "$xPUPSFSDEV" | grep -f /tmp/OPTICALDRIVES0`" != "" ];then #110205
       #it is on the cd, so checkout copying it to hd...
       echo -e "\\033[1;36m" >/dev/console #36=aquablue
       echo "The main Puppy file '${basepupsfs}' is being loaded off the optical disc." >/dev/console
       echo "Very slow! Type ENTER key only to copy it to the same partition as the save-file then on next boot it will load fast. Type any printable char not to copy it." >/dev/console
       echo -n "ENTER key only to copy: " >/dev/console
       echo -en "\\033[0;39m" >/dev/console
       read nocopysfs
       if [ "$nocopysfs" = "" ];then
        echo -en "\\033[1;35m" >/dev/console #35=purple
        echo "'${basepupsfs}' now copying to hard drive (but only available next boot)..." >/dev/console
        echo -en "\\033[0;39m" >/dev/console
        PPATTERN="/dev/$xPUPSFSDEV "
        PUPSFSDEVMNTPT="`mount | grep -m1 "$PPATTERN" | cut -f 3 -d ' '`"
        if [ "$PUPSFSDEVMNTPT" = "" ];then
         mntfunc $xPUPSFSFS /dev/$xPUPSFSDEV /mnt/dev_ro2 #-t $PUPSFSFS /dev/$PUPSFSDEV /mnt/dev_ro2
         PUPSFSDEVMNTPT="/mnt/dev_ro2"
         UMOUNTME="/mnt/dev_ro2" #mark for unmounting.
        fi
        #110424 do not copy puppy*.sfs into a sub-dir...
        cp -f ${PUPSFSDEVMNTPT}/*.sfs  /mnt/dev_save/
        sync
       fi
      fi
     fi
    fi
   
   fi
  fi
 fi
fi

#there are technical problems with loading a swap partition/file before the union
#is created, so not doing it until rc.sysinit runs. however, if a tmpfs needs to be
#created here, set it's size in anticipation of a swap being loaded...
EXTRAALLOCK=0
SWAPPART="`echo "$PCPARTSALL" | grep '|swap|' | head -n 1`"
[ "$SWAPPART" ] && SWAPPARTSIZE=`echo -n "$SWAPPART" | cut -f 3 -d '|'`
[ $SWAPPARTSIZE ] && EXTRAALLOCK=`expr $SWAPPARTSIZE \/ 2`
if [ $EXTRAALLOCK -eq 0 ];then
 [ -f ${SMNTPT}/pupswap.swp ] && SWAPFILESIZEBYTES=`stat -c %s ${SMNTPT}/pupswap.swp`
 [ $SWAPFILESIZEBYTES ] && EXTRAALLOCK=`expr $SWAPFILESIZEBYTES \/ 2048` #use half. 110521 also convert bytes to kb.
fi

FREEK=0
if [ "$CREATETMPFS" != "" ];then
 FREEK=`expr $RAMSIZE \/ 2` #half of physical.
 [ $PUPMODE -eq 77 ] && FREEK=`expr $FREEK - 50000` #need some slack.
 ALLOCK=`expr $FREEK + $EXTRAALLOCK`
 mount -t tmpfs -o size=${ALLOCK}k tmpfs $CREATETMPFS
fi

#RW (top) layer now has a tmpfs, PDEV1 or ${DISTRO_FILE_PREFIX}save mounted on it. calc free space...
[ $FREEK -eq 0 ] && FREEK=`df | grep ' /pup_rw' | tr -s ' ' | cut -f 4 -d ' '`
[ ! $FREEK ] && FREEK=0

if [ "$CREATEFOLDERS" != "" ];then
 PUPSAVEDEV="`echo -n "$PUPSAVE" | cut -f 1 -d ','`"
 PUPSAVEFS="`echo -n "$PUPSAVE" | cut -f 2 -d ','`"
 PUPSAVEFILE="`echo -n "$PUPSAVE" | cut -f 3 -d ','`"
 mount -o noatime -t $PUPSAVEFS /dev/$PUPSAVEDEV /mnt/dev_ro1 #mnt the cd.
 #create a tmpfs to load the folders...
 ALLOCK=`expr $RAMSIZE \/ 2 - 50000` #allocate half of physical ram. + leave 50M slack.
 mount -t tmpfs -o size=${ALLOCK}k tmpfs $CREATEFOLDERS #/pup_ro1
 #load the folders from the cd...
  ####START LOAD FOLDERS####
  CDMNTPT="/mnt/dev_ro1" #where the multisession cd is mounted.
  DESTDIR="$CREATEFOLDERS" #dest dir has a tmpfs mntd on it, into which to copy folders.
  BKFOLDERS="`ls -1 -r $CDMNTPT | grep '^20[0-9][0-9]'`"
  BKLASTFOLDER="`echo "$BKFOLDERS" | head -n 1`"
  #a boot option allows ignore last n sessions, also need to create a badlist...
  if [ "$PIGNORELAST" ];then
   BKBADLIST="`echo "$BKFOLDERS" | head -n ${PIGNORELAST}`"
   if [ -f $CDMNTPT/$BKLASTFOLDER/.badfolders ];then
    cp $CDMNTPT/$BKLASTFOLDER/.badfolders $DESTDIR/
    if [ ! $? -eq 0 ];then
     #fallback, in case last folder badly corrupted...
     BKPREVFOLDER="`echo "$BKFOLDERS" | head -n 2 | tail -n 1`"
     [ -f $CDMNTPT/$BKPREVFOLDER/.badfolders ] && cp $CDMNTPT/$BKPREVFOLDER/.badfolders $DESTDIR/
    fi
   fi
   echo "$BKBADLIST" >> $DESTDIR/.badfolders
   #note, rc.shutdown and savesession-dvd 'touch' this file so it will get saved.
   sync
  else
   [ -f $CDMNTPT/$BKLASTFOLDER/.badfolders ] && cp $CDMNTPT/$BKLASTFOLDER/.badfolders $DESTDIR/
  fi
  [ -f $DESTDIR/.badfolders ] && BKBADLIST="`cat $DESTDIR/.badfolders | tr "\n" " "`"
  BKFOLDERS="`echo -n "$BKFOLDERS" | tr "\n" " "`"
  for ONEFOLDER in $BKFOLDERS
  do
   if [ ! "`echo -n "$BKBADLIST" | grep "$ONEFOLDER"`" = "" ];then
    echo "Folder $ONEFOLDER marked bad." >/dev/console
    continue #ignore bad folder.
   fi
   echo -n "Loading folder $ONEFOLDER from CD/DVD..." >/dev/console
   #need to be careful not to overfill the ramdisk...
   FREERAMDISK=`df 2>/dev/null | grep "$DESTDIR" | head -n 1 | tr -s " " | cut -f 4 -d " "`
   SIZEFOLDER=`du -k -s ${CDMNTPT}/${ONEFOLDER} | cut -f 1`
   if [ -d ${CDMNTPT}/${ONEFOLDER}/archive ];then
    SIZEARCHIVE=`du -k -s ${CDMNTPT}/${ONEFOLDER}/archive | cut -f 1`
   else
    SIZEARCHIVE=0
   fi
   SIZESOURCE=`expr $SIZEFOLDER - $SIZEARCHIVE`
   if [ $FREERAMDISK -gt $SIZESOURCE ];then
    #well, -u will only copy if files newer, so less stuff may get copied than calc'd above.
    #need to copy everything except archive folder...
    [ -d $CDMNTPT/$ONEFOLDER/bin ] && cp -a -u $CDMNTPT/$ONEFOLDER/bin $DESTDIR/   > /dev/null 2>&1
    [ -d $CDMNTPT/$ONEFOLDER/sbin ] && cp -a -u $CDMNTPT/$ONEFOLDER/sbin $DESTDIR/   > /dev/null 2>&1
    [ -d $CDMNTPT/$ONEFOLDER/etc ] && cp -a -u $CDMNTPT/$ONEFOLDER/etc $DESTDIR/   > /dev/null 2>&1
    [ -d $CDMNTPT/$ONEFOLDER/lib ] && cp -a -u $CDMNTPT/$ONEFOLDER/lib $DESTDIR/   > /dev/null 2>&1
    [ -d $CDMNTPT/$ONEFOLDER/opt ] && cp -a -u $CDMNTPT/$ONEFOLDER/opt $DESTDIR/   > /dev/null 2>&1
    if [ -d $CDMNTPT/$ONEFOLDER/root/.var_saved ];then #100820 see /etc/rc.d/functions4puppy
     mkdir -p $DESTDIR/var
     cp -a -u $CDMNTPT/$ONEFOLDER/root/.var_saved/* $DESTDIR/var/ > /dev/null 2>&1
    fi
    [ -d $CDMNTPT/$ONEFOLDER/root ] && cp -a -u $CDMNTPT/$ONEFOLDER/root $DESTDIR/   > /dev/null 2>&1
    [ -d $CDMNTPT/$ONEFOLDER/root/.var_saved ] && rm -rf $DESTDIR/root/.var_saved > /dev/null 2>&1 #100820
    [ -d $CDMNTPT/$ONEFOLDER/usr ] && cp -a -u $CDMNTPT/$ONEFOLDER/usr $DESTDIR/   > /dev/null 2>&1
    [ $DEVTMPFSFLG -eq 0 ] && [ -d $CDMNTPT/$ONEFOLDER/dev ] && cp -a -u $CDMNTPT/$ONEFOLDER/dev $DESTDIR/   > /dev/null 2>&1 #v411 130612
    cp -a -u $CDMNTPT/$ONEFOLDER/*.sfs $DESTDIR/   > /dev/null 2>&1 #v3.97
    #delete deleted files (.wh.filename)... 110212 screen out .wh..wh..opq
    WHITEOUTS="`find $DESTDIR -xdev -type f -name .wh.* | grep -v '__dir_opaque' | grep -v '.wh..wh.'`" #110212
    echo "$WHITEOUTS" |
    while read DELWHITE
    do
     DELFILE="`echo -n "$DELWHITE" | sed -e 's/\\.wh\\.//g'`"
     if [ -e "$DELFILE" ];then
      rm -rf "$DELFILE"
      rm -rf "$DELWHITE"
     fi
    done
    check_status 0 #display 'done' for each folder loaded.
   else
    echo -n -e "\\033[70G\\033[1;31m" >/dev/console #red text on column 70.
    echo -n "RAM full" >/dev/console
    echo -e "\\033[0;39m" >/dev/console
    break
   fi
  done
  sync
  ####END LOAD FOLDERS####    
 umount /mnt/dev_ro1 #unmount the cd.
fi

OLDDISTRO_VERSION="$DISTRO_VERSION" #110422
[ -f $OLDFILESMNTPT/etc/puppyversion ] && OLDDISTRO_VERSION="`cat $OLDFILESMNTPT/etc/puppyversion`" #old pre-w464 installation. 110422
[ -f $OLDFILESMNTPT/etc/DISTRO_SPECS ] && OLDDISTRO_VERSION="`grep '^DISTRO_VERSION' $OLDFILESMNTPT/etc/DISTRO_SPECS | cut -f 2 -d '=' | cut -f 2 -d "'" | cut -f 2 -d '"' | cut -f 1 -d ' '`" #w012 w478 110422

#110801 moved up...
REASON=''
vercmp $DISTRO_VERSION gt $OLDDISTRO_VERSION && REASON='upgrade' #110422
[ $PUPMODE -eq 5 ] && REASON='firstboot'

#110810 some builds may have many scsi drivers in initrd, if needed will have already loaded, so delete them...
if [ "$REASON" != "" ];then
 mkdir /tmp/scsi-keep
 for ONEKEEP in imm.ko ppa.ko raid_class.ko sg.ko scsi_wait_scan.ko
 do
  ONEFND="`find /lib/modules/$KERNELVER/kernel/drivers/scsi -type f -name $ONEKEEP`"
  [ "$ONEFND" ] && cp -a $ONEFND /tmp/scsi-keep/
 done
 rm -rf /lib/modules/$KERNELVER/kernel/drivers/scsi
 cp -a /tmp/scsi-keep /lib/modules/$KERNELVER/kernel/drivers/scsi #restore needed.
fi

#110810 problem kernel numbering 2.6.32-40, 2.6.32-44 both in /lib/modules/2.6.32...
if [ "$REASON" = "upgrade" ];then
  if [ -d /pup_rw/lib/modules/initrd ];then
   rm -rf /pup_rw/lib/modules/initrd
   rm -f /pup_rw/lib/modules/modules.*
  fi
  if [ -d /pup_ro1/lib/modules/initrd ];then
   rm -rf /pup_ro1/lib/modules/initrd
   rm -f /pup_ro1/lib/modules/modules.*
  fi
fi

#move modules to main f.s...
#(do this before loading ${DISTRO_FILE_PREFIX}-xxx.sfs, to free up ram space)...
if [ "$ZDRVINIT" = "yes" ];then
 #the entire kitchen sink of modules is in the initrd.
 ZDRV='' #/sbin/modprobe needs this.
 #what if deleted modules due to lack space in ${DISTRO_FILE_PREFIX}save, but now more free space?... v4.01...
 [ ! -d /pup_rw/lib/modules/all-firmware ] && [ ! -d /pup_ro1/lib/modules/all-firmware ] && [ $FREEK -gt 24000 ] && REASON='restore'
 if [ "$REASON" != "" ];then
  [ -d /pup_rw/lib/modules ] && rm -rf /pup_rw/lib/modules
  [ -d /pup_ro1/lib/modules ] && rm -rf /pup_ro1/lib/modules
  mkdir -p /pup_rw/lib
  mv /lib/modules /pup_rw/lib/
  mkdir -p /pup_rw/initrd
  cp -af /DISTRO_SPECS /pup_rw/initrd/
  cp -af /init /pup_rw/initrd/
  sync
 fi
else
 #the initrd does have some modules, move them to the main layered f.s...
 #v4.02 moved this up. had it down after the the unionfs setup (just want it same place as the above code).
 [ ! -d /pup_rw/lib/modules/$KERNELVER/initrd ] && [ ! -d /pup_ro1/lib/modules/$KERNELVER/initrd ] && REASON="new"
 if [ "$REASON" = "new" ];then #110810 change test.
  mkdir -p /pup_rw/lib/modules/$KERNELVER #PUPMODE=5, this dir not exist.
  mv /lib/modules/$KERNELVER /pup_rw/lib/modules/$KERNELVER/initrd
  rm -f /pup_rw/lib/modules/$KERNELVER/initrd/modules.*
  sync
  #note: /etc/rc.d/rc.sysinit will detect them and run depmod.
 fi
fi

COPY2RAM=""
COPYMSG='copying to ram' #purple

if [ "$CREATEPUPXXXSFS" != "" ];then
 #load puppy.sfs...
 PUPSFSDEV="`echo -n "$PUPSFS" | cut -f 1 -d ','`"
 PUPSFSFS="`echo -n "$PUPSFS" | cut -f 2 -d ','`"
 PUPSFSFILE="`echo -n "$PUPSFS" | cut -f 3 -d ','`"
 basepupsfs="`basename $PUPSFSFILE`"
 
 echo -n "Loading the '${basepupsfs}' main file..." > /dev/console
 if [ "$PUPSFSDEV" = "rootfs" ];then #humongous initrd.
  PUPSFSDEVMNTPT="" #actually it's '/'.
  COPY2RAM='yes' #actually it is already in ram, but code below puts it in a tmpfs.
 else
  PPATTERN="/dev/$PUPSFSDEV "
  PUPSFSDEVMNTPT="`mount | grep -m1 "$PPATTERN" | cut -f 3 -d ' '`"
  if [ "$PUPSFSDEVMNTPT" = "" ];then
   mntfunc $PUPSFSFS /dev/$PUPSFSDEV /mnt/dev_ro2 #-t $PUPSFSFS /dev/$PUPSFSDEV /mnt/dev_ro2
   PUPSFSDEVMNTPT="/mnt/dev_ro2"
   UMOUNTME="/mnt/dev_ro2" #mark for unmounting.
  fi
 fi
 #if there's heaps of ram, copy puppy.sfs to a tmpfs...
 #v405 fast media plus more than 256MB ram then definitely worth copying to ram...
 SIZESFSK=`du -k ${PUPSFSDEVMNTPT}${PUPSFSFILE} | cut -f 1`
 SIZESFSK=$(($SIZESFSK + 1000)) #some slack.
 MINRAM2CPY=$(($SIZESFSK * 2)) #100222 technosaurus: in case of very big puppies.
 
 #100920 decide whether to copy .sfs's to ram (see prior decision above)...
 pdPATTERN="`echo "$PUPSFSDEV" | sed -e 's/[0-9]*$//'` " 
 if [ "$PNOCOPY" != "yes" ];then
  [ "`echo -n "$ATADRIVES" | grep "$pdPATTERN"`" = "" ] && COPYCONTENDER='yes' #test if not fast internal drive.
  [ $PUPMODE -eq 5 ] && COPYCONTENDER='yes'
  [ "$DEV1FS" = "iso9660" ] && COPYCONTENDER='yes'
  [ "$DEV1FS" = "udf" ] && COPYCONTENDER='yes' #130128
  [ $RAMSIZE -gt 700000 ] && COPYCONTENDER='yes' #130728 always try to copy sfs to ram if >=700MB.
 fi
 [ "$PCOPY" = "yes" ] && COPYCONTENDER='yes'
 #130728 bump minimum ram size... was 220000
 [ "$COPYCONTENDER" = "yes" ] && [ $RAMSIZE -gt 400000 ] && [ $RAMSIZE -gt $MINRAM2CPY ] && COPY2RAM="yes"
 
 if [ "$COPY2RAM" = "yes" ];then
  mount -t tmpfs -o size=${SIZESFSK}k tmpfs /mnt/tmpfs
  if [ "${PUPSFSDEVMNTPT}" = "" ];then #v403 humongous initrd.
    mv -f ${PUPSFSDEVMNTPT}${PUPSFSFILE} /mnt/tmpfs/
  else
   echo -e -n " \\033[1;35m${COPYMSG}\\033[0;39m" > /dev/console #purple.
   cp -af ${PUPSFSDEVMNTPT}${PUPSFSFILE} /mnt/tmpfs/
  fi
  sync
  SFSBASENAME="`basename $PUPSFSFILE`"
  losetup /dev/loop0 /mnt/tmpfs/${SFSBASENAME}
#101013 moved down  [ "$UMOUNTME" != "" ] && umntfunc $UMOUNTME
 else
  losetup /dev/loop0 ${PUPSFSDEVMNTPT}${PUPSFSFILE}
 fi
 mount -r -t squashfs -o noatime /dev/loop0 $CREATEPUPXXXSFS #usually /pup_ro2.
fi

###TODO: above code-block almost same as below, could probably combine###

ZLAYER='' #v4.02
ZFACTOR='' #v426
#note, traditionally, loop2 kept free for scripts to use.
if [ "$ZDRVINIT" != "yes" ];then
 #v4.02 if ZDRV located, and mounted, put it into the layered-fs...
 if [ "$ZDRV" != "" ];then
  ZDEV="`echo "$ZDRV" | cut -f 1 -d ','`"
  ZFS="`echo "$ZDRV" | cut -f 2 -d ','`"
  ZFILE="`echo "$ZDRV" | cut -f 3 -d ','`"
  MNT_ZFILE=""
  if [ "$ZDEV" = "rootfs" ];then #101102 humongous initrd.
   MNT_ZFILE="" #actually it's '/'.
   COPY2RAM='yes' #actually it is already in ram, but code below puts it in a tmpfs.
  else
   zPATTERN="/dev/$ZDEV "
   MNT_ZFILE="`mount | grep -m1 "$zPATTERN" | cut -f 3 -d ' '`"
  fi
  ZBASENAME="`basename $ZFILE`" #v426 moved up.
  if [ "$MNT_ZFILE" != "" ];then
   if [ "$COPY2RAM" = "yes" ];then
    SIZEZK=`du -k ${MNT_ZFILE}${ZFILE} | cut -f 1`
    SIZEZK=`expr $SIZEZK + 1000` #some slack.
    mount -t tmpfs -o size=${SIZEZK}k tmpfs /mnt/tmpfs4
    if [ "$MNT_ZFILE" = "" ];then #101101 humongous initrd.
     mv -af ${MNT_ZFILE}${ZFILE} /mnt/tmpfs4/
    else
     cp -af ${MNT_ZFILE}${ZFILE} /mnt/tmpfs4/
    fi
    sync
    losetup /dev/loop4 /mnt/tmpfs4/${ZBASENAME}
   else
    losetup /dev/loop4 ${MNT_ZFILE}${ZFILE}
   fi
   mount -r -t squashfs -o noatime /dev/loop4 /pup_z
   if [ $? -eq 0 ];then
    ZLAYER=':/pup_z=ro'
    ZFACTOR="$ZBASENAME" #v426
   fi
  fi
 fi
fi

#130513 create pupdesk.flg...
if [ $PUPMODE -eq 5 ];then
 if [ -s /tmp/RWPART ];then
  pdFLG=0
  pdDEV="$(cat /tmp/RWPART | cut -f 1 -d '|')"
  pdFS="$(cat /tmp/RWPART | cut -f 2 -d '|')"
  pdMNTPT="$(cat /proc/mounts | grep "/dev/${pdDEV} " | cut -f 2 -d ' ')"
  if [ ! "$pdMNTPT" ];then
   mkdir -p /mnt/$pdDEV
   mntfunc $pdFS /dev/$pdDEV /mnt/$pdDEV #130518
   pdFLG=1
   pdMNTPT="/mnt/${pdDEV}"
  fi
  if [ ! -f ${pdMNTPT}/pupdesk.flg ];then
   touch ${pdMNTPT}/pupdesk.flg #read in quicksetup.
  else
   #quicksetup writes auto-selected driver into pupdesk.flg (at previous boot).
   mkdir -p /pup_rw/var/local #130518
   cp -f ${pdMNTPT}/pupdesk.flg /pup_rw/var/local/quicksetup-pupmode5-autodriver  #xorgwizard-cli reads this.
   mkdir -p /pup_rw/root #130518
   touch /pup_rw/root/.xorgwizard-reenter #see /root/.profile, will cause xorgwizard to run.
   #...see also /etc/rc.d/rc.sysinit
  fi
  [ $pdFLG -eq 1 ] && umntfunc $pdMNTPT
 fi
else
 [ -f /tmp/RWPART ] && rm -f /tmp/RWPART
fi

ALAYER=''
AFACTOR=''
if [ "$ADRV" != "" ];then
  ADEV="`echo "$ADRV" | cut -f 1 -d ','`"
  AFS="`echo "$ADRV" | cut -f 2 -d ','`"
  AFILE="`echo "$ADRV" | cut -f 3 -d ','`"
  MNT_AFILE=""
  aPATTERN="/dev/$ADEV "
  MNT_AFILE="`mount | grep -m1 "$aPATTERN" | cut -f 3 -d ' '`"
  ABASENAME="`basename $AFILE`" #v426 moved up.
  if [ "$MNT_AFILE" != "" ];then
   if [ "$COPY2RAM" = "yes" ];then
    SIZEZK=`du -k ${MNT_AFILE}${AFILE} | cut -f 1`
    SIZEZK=`expr $SIZEZK + 1000` #some slack.
    mount -t tmpfs -o size=${SIZEZK}k tmpfs /mnt/tmpfs2
    cp -af ${MNT_AFILE}${AFILE} /mnt/tmpfs2/
    sync
    losetup /dev/loop2 /mnt/tmpfs2/${ABASENAME}
   else
    losetup /dev/loop2 ${MNT_AFILE}${AFILE}
   fi
   mount -r -t squashfs -o noatime /dev/loop2 /pup_a > /dev/console 2>&1
   if [ $? -eq 0 ];then
    ALAYER='/pup_a=ro:'
    AFACTOR="$ABASENAME" #v426
   fi
  fi
fi

YLAYER=''
YFACTOR=''
if [ "$YDRV" != "" ];then
  YDEV="`echo "$YDRV" | cut -f 1 -d ','`"
  YFS="`echo "$YDRV" | cut -f 2 -d ','`"
  YFILE="`echo "$YDRV" | cut -f 3 -d ','`"
  MNT_YFILE=""
  yPATTERN="/dev/$YDEV "
  MNT_YFILE="`mount | grep -m1 "$yPATTERN" | cut -f 3 -d ' '`"
  YBASENAME="`basename $YFILE`" #v426 moved up.
  if [ "$MNT_YFILE" != "" ];then
   if [ "$COPY2RAM" = "yes" ];then
    SIZEZK=`du -k ${MNT_YFILE}${YFILE} | cut -f 1`
    SIZEZK=`expr $SIZEZK + 1000` #some slack.
    mount -t tmpfs -o size=${SIZEZK}k tmpfs /mnt/tmpfs3
    cp -af ${MNT_YFILE}${YFILE} /mnt/tmpfs3/
    sync
    losetup /dev/loop3 /mnt/tmpfs3/${YBASENAME}
   else
    losetup /dev/loop3 ${MNT_YFILE}${YFILE}
   fi
   mount -r -t squashfs -o noatime /dev/loop3 /pup_y > /dev/console 2>&1
   if [ $? -eq 0 ];then
    YLAYER='/pup_y=ro:'
    YFACTOR="$YBASENAME" #v426
   fi
  fi
fi

[ "$UMOUNTME" != "" ] && umntfunc $UMOUNTME #101013 puppy.sfs was copied to tmpfs so can unmount partition.

check_status 0 #$?
########################END LOADING PUPPY FILES########################

#120215 may have PSUBDIR already, but use this method... (i want to be able to locate the initrd.gz)
zPSUBDIR=''
[ "$PUPSFS" ] && zPSUBDIR="`echo -n "$PUPSFS" | cut -f 3 -d ',' | sed -e 's%/[^/]*$%%'`" #ex: sda3,ext2,/pup220/xxx.sfs will return /pup220
[ "$zPSUBDIR" = "" -o "$zPSUBDIR" = "/" ] && zPSUBDIR="$PSUBDIR"
#...this will be written to /etc/rc.d/PUPSTATE

#/etc/PUPSTATE passes useful variables to the running puppy...
mkdir -p /pup_rw/etc/rc.d
echo "PUPMODE=$PUPMODE" > /pup_rw/etc/rc.d/PUPSTATE
echo "PDEV1='$PDEV1'" >> /pup_rw/etc/rc.d/PUPSTATE
echo "DEV1FS='$DEV1FS'" >> /pup_rw/etc/rc.d/PUPSTATE
echo "PUPSFS='$PUPSFS'" >> /pup_rw/etc/rc.d/PUPSTATE
echo "PUPSAVE='$PUPSAVE'" >> /pup_rw/etc/rc.d/PUPSTATE
echo "PMEDIA='$PMEDIA'" >> /pup_rw/etc/rc.d/PUPSTATE
echo '#ATADRIVES is all internal ide/pata/sata drives, excluding optical, excluding usb...' >> /pup_rw/etc/rc.d/PUPSTATE
echo "ATADRIVES='$ATADRIVES'"  >> /pup_rw/etc/rc.d/PUPSTATE
echo '#ATAOPTICALDRIVES is list of non-usb optical drives...'  >> /pup_rw/etc/rc.d/PUPSTATE #110206
echo "ATAOPTICALDRIVES='$ATAOPTICALDRIVES'"  >> /pup_rw/etc/rc.d/PUPSTATE
echo '#these directories are unionfs/aufs layers in /initrd...' >> /pup_rw/etc/rc.d/PUPSTATE
echo "SAVE_LAYER='$OLDFILESMNTPT'" >> /pup_rw/etc/rc.d/PUPSTATE
echo "PUP_LAYER='$NEWFILESMNTPT'" >> /pup_rw/etc/rc.d/PUPSTATE
#if [ $SMNTPT ];then
 echo "#The partition that has the ${DISTRO_FILE_PREFIX}save file is mounted here..." >> /pup_rw/etc/rc.d/PUPSTATE
 echo "PUP_HOME='${SMNTPT}'" >> /pup_rw/etc/rc.d/PUPSTATE
 echo '#(in /initrd) ...note, /mnt/home is a link to it.' >> /pup_rw/etc/rc.d/PUPSTATE
#fi
echo '#this file has extra kernel drivers and firmware...' >> /pup_rw/etc/rc.d/PUPSTATE
echo "ZDRV='$ZDRV'" >> /pup_rw/etc/rc.d/PUPSTATE #v2.22
echo "ADRV='$ADRV'" >> /pup_rw/etc/rc.d/PUPSTATE 
echo "YDRV='$YDRV'" >> /pup_rw/etc/rc.d/PUPSTATE
echo '#complete set of modules in the initrd (moved to main f.s.)...' >> /pup_rw/etc/rc.d/PUPSTATE
echo "ZDRVINIT='$ZDRVINIT'" >> /pup_rw/etc/rc.d/PUPSTATE #v4.02
echo '#Partition no. override on boot drive to which session is (or will be) saved...' >> /pup_rw/etc/rc.d/PUPSTATE
echo "PSAVEMARK='$PSAVEMARK'" >> /pup_rw/etc/rc.d/PUPSTATE
if [ "$PLANG" ];then #120215 L18L. 120217 bring this back, seems like a good thing!
 echo "#PLANG is written to LANG in /etc/profile by init script initrd...
PLANG=${PLANG}
OUTPUT_CHARSET=UTF-8
export OUTPUT_CHARSET" >> /pup_rw/etc/rc.d/PUPSTATE
fi
echo "PSUBDIR='${zPSUBDIR}'" >> /pup_rw/etc/rc.d/PUPSTATE #120215

#older ${DISTRO_FILE_PREFIX}save.2fs <v2.16 will not have this file...
[ ! -f $OLDFILESMNTPT/etc/rc.d/BOOTCONFIG ] && touch $OLDFILESMNTPT/etc/rc.d/BOOTCONFIG
#note, OLDFILESMNTPT can also be "" so BOOTCONFIG needs to exist in initrd also.
. $OLDFILESMNTPT/etc/rc.d/BOOTCONFIG #can have EXTRASFSLIST variable.

#110217 very bad hack, see /etc/rc.d/rc.update, rc.shutdown.
[ ! -f $OLDFILESMNTPT/var/local/etc_profile_at_shutdown ] && cp -f $OLDFILESMNTPT/etc/profile $OLDFILESMNTPT/var/local/etc_profile_at_shutdown


######################SETUP LAYERED FILESYSTEM########################
echo -n "Setting up the layered filesystem..." > /dev/console #STEP FIVE
#are there any other sfs files to load at bottom layers?...
NEWUNIONRECORD=""
CNTLOOP=5 ; UMNTRO=""
if [ "$PUPSAVE" != "" ];then
 if [ "$SMNTPT" != "" -o $PUPMODE -eq 77 ];then #v3.97
  touch /tmp/EXTRASFSS #100711
  SFSSDIR="$SMNTPT"
  #100711 look in top and in psubdir...
  xSFSSDIRx="" #100711
  xPSUBDIR="`echo -n "$PUPSAVE" | cut -f 3 -d ',' | sed -e 's%/[^/]*$%%'`" #ex: sda3,ext2,/pup220/spupsave.2fs will return /pup220
  [ "$xPSUBDIR" ] && xSFSSDIRx="${SMNTPT}${xPSUBDIR}"'/*.sfs' #100711
  [ $PUPMODE -eq 77 ] && SFSSDIR="$DESTDIR" #v3.97
  #find all the extra sfs files...
  touch /tmp/LOGONEBASES
  #v424 modified to only load selection made in BootManager...
  if [ "$EXTRASFSLIST" != "" ];then #in /etc/rc.d/BOOTCONFIG
  
   #130514 shinobar: extra sfs in the order of EXTRASFSLIST, subdir first
   for ONEEXTRA in $EXTRASFSLIST ; do
    ONEBASE="`basename $ONEEXTRA`"
    echo "$ONEBASE" | grep -qE '^z|^pup[_-]' && continue
    echo "/tmp/EXTRASFSS" | grep -q "$ONEBASE" && continue # avoid loading duplicates.
    [ "$xPSUBDIR" != "" ] && [ -s "$SFSSDIR$xPSUBDIR/$ONEBASE" ] && echo "$SFSSDIR$xPSUBDIR/$ONEBASE" >> /tmp/EXTRASFSS && continue
    [ -s "$SFSSDIR/$ONEBASE" ] && echo "$SFSSDIR/$ONEBASE" >> /tmp/EXTRASFSS && continue
   done

  fi
  UMNTRO="" ; EXTRASFSLIST=""
  if [ -s /tmp/EXTRASFSS ];then #100711
   for ONEEXTRA in `cat /tmp/EXTRASFSS | tr '\n' ' '`
   do
    ONEBASE="`basename $ONEEXTRA`"
    EXTRASFSLIST="${EXTRASFSLIST}${ONEBASE} " #construct list of actually used.
    losetup /dev/loop${CNTLOOP} $ONEEXTRA
    mount -r -t squashfs -o noatime /dev/loop${CNTLOOP} /pup_ro${CNTLOOP}
    [ $? -eq 0 ] && UMNTRO="${UMNTRO}:/pup_ro${CNTLOOP}=ro"
    CNTLOOP=`expr $CNTLOOP + 1`
    [ $CNTLOOP -eq 10 ] && break
    #...only support adding 3 extra .sfs files, as performance degrades as each layer added.
    #...v410 bugfix, change 6 to 7 so can have 3 sfs files.
    #...w015 change 7 to 10 so can have 6 sfs files.
   done
  fi
  #keep a record of different layer configurations...
  SAVEFILE="`echo -n "$PUPSAVE" | cut -f 3 -d ','`"
  SAVEFILENAMEONLY="`basename $SAVEFILE`"
  SFSFILE="`echo -n "$PUPSFS" | cut -f 3 -d ','`"
  SFSFILENAMEONLY="`basename $SFSFILE`"
  RECORDLIST="$SAVEFILENAMEONLY $AFACTOR $YFACTOR $SFSFILENAMEONLY $ZFACTOR $EXTRASFSLIST" #v426
  NEWUNIONRECORD="`echo "$RECORDLIST" | tr -s ' '  | sed -e 's/ $//'`"

  #120130 bring back Underdog Linux...
  [ ! "$UNDERDOG" ] && [ "$xPSUBDIR" ] && [ -f "${SMNTPT}${xPSUBDIR}/underdog.lnx" ] && UNDERDOG="`cat "${SMNTPT}${xPSUBDIR}/underdog.lnx"`"
  [ ! "$UNDERDOG" ] && [ -f $SFSSDIR/underdog.lnx ] && UNDERDOG="`cat ${SFSSDIR}/underdog.lnx`"
  
 fi
fi

#120130 bring back Underdog Linux...
if [ "$UNDERDOG" ];then #note, 'underdog' can also be specified on kernel commandline.
 udPTN1="${UNDERDOG}|"
 FNDPART="`echo "$PCPARTS0" | grep "$udPTN1"`" #ex: sda1|ext3
 if [ "$FNDPART" ];then
  udPTN2="/dev/${UNDERDOG} "
  UDMNTPT="`mount | grep -m1 "$udPTN2" | cut -f 3 -d ' '`"
  if [ ! "$UDMNTPT" ];then #must not be mounted.
   udFS="`echo -n "$FNDPART" | cut -f 2 -d '|'`"
   mount -r -t $udFS /dev/$UNDERDOG /pup_ro${CNTLOOP}
   if [ $? -eq 0 ];then
    UMNTRO="${UMNTRO}:/pup_ro${CNTLOOP}=ro"
    #fixes to prevent library clashes... (got out of puppy 2.x)
    MNTFIX='/pup_rw'
    [ "`echo -n "$UMNTRO" | grep 'pup_ro1'`" != "" ] && MNTFIX='/pup_ro1'
    [ ! -f $MNTFIX/lib/.wh.i686 ] && touch /pup_rw/lib/.wh.i686 #hides /lib/i686
    #puppy needs dir name /usr/lib/qt at bootup (see rc.profile)...
    REALQTDIR="`find /pup_ro${CNTLOOP}/usr/lib -maxdepth 1 -type d -name 'qt*' | tail -n 1 | sed -e "s/\/pup_ro${CNTLOOP}\/usr\/lib\///"`"
    if [ "$REALQTDIR" ];then
     if [ ! -e $MNTFIX/usr/lib/qt ];then
      [ "`find /pup_ro${CNTLOOP}/usr/lib -maxdepth 1 -xtype d -name qt`" = "" ] && ln -s $REALQTDIR /pup_rw/usr/lib/qt
     fi
    fi
    CNTLOOP=`expr $CNTLOOP + 1`
   fi
  fi
 fi
fi

#update /etc/rc.d/BOOTCONFIG with latest layered-fs layers configuration... #100222 fix...
xBOOTCONFIG="`grep -v '^PREVUNIONRECORD' $OLDFILESMNTPT/etc/rc.d/BOOTCONFIG | sed -e 's/^LASTUNIONRECORD/PREVUNIONRECORD/'`"
echo "$xBOOTCONFIG" > /pup_rw/etc/rc.d/BOOTCONFIG
#sync
echo "LASTUNIONRECORD='$NEWUNIONRECORD'" >> /pup_rw/etc/rc.d/BOOTCONFIG
[ "$LASTUNIONRECORD" = "$NEWUNIONRECORD" ] && NEWUNIONRECORD="" #used below.
#...if layers changed since last boot, code further down will do whiteout files purge.
#.../etc/rc.d/rc.update reads BOOTCONFIG, updates menu (etc) if layers changed.

#after switch_root, rc.sysinit calls rc.update, but need to do pre-cleaning...
if [ "$OLDFILESMNTPT" != "" ];then
 #an empty tmp is required for mounting a tmpfs onto later...
 rm -rf $OLDFILESMNTPT/tmp/*
 rm -rf $OLDFILESMNTPT/tmp/.[0-9a-zA-Z]*
 if [ ! -L $OLDFILESMNTPT/usr/X11R6 ];then #test if a symlink.
  #this is supposed to be a link to X11R7. <2.10 it won't be...
  if [ -d $OLDFILESMNTPT/usr/X11R6 ];then
   mkdir -p $OLDFILESMNTPT/usr/X11R7
   cp -af $OLDFILESMNTPT/usr/X11R6/* $OLDFILESMNTPT/usr/X11R7/
   rm -rf $OLDFILESMNTPT/usr/X11R6
  fi
  [ -d X11R7 ] && ln -s X11R7 $OLDFILESMNTPT/usr/X11R6
 fi
 rm -rf $OLDFILESMNTPT/root/tmp 2>/dev/null
 rm -f $OLDFILESMNTPT/root/.wh.tmp 2>/dev/null
 NEWPVERSION="$DISTRO_VERSION" #110422
 if [ -f $OLDFILESMNTPT/etc/puppyversion ];then
  OLDPVERSION="`cat $OLDFILESMNTPT/etc/puppyversion`" #old pre-w464 installation. 110422
  rm -f $OLDFILESMNTPT/etc/puppyversion #no longer used.
 fi
 [ -f $OLDFILESMNTPT/etc/DISTRO_SPECS ] && OLDPVERSION="`grep '^DISTRO_VERSION' $OLDFILESMNTPT/etc/DISTRO_SPECS | cut -f 2 -d '=' | cut -f 2 -d '"' | cut -f 2 -d "'" | cut -f 1 -d ' '`" #w478 110422

 [ "$OLDPVERSION" = "" ] && OLDPVERSION="$NEWPVERSION" 
 if vercmp ${NEWPVERSION} gt ${OLDPVERSION} ; then 
  #make sure that the official boot scripts will be visible at top
  rm -f $OLDFILESMNTPT/etc/rc.d/functions
  rm -f $OLDFILESMNTPT/etc/rc.d/functions4puppy4
  rm -f $OLDFILESMNTPT/etc/rc.d/rc.country
  rm -f $OLDFILESMNTPT/etc/rc.d/rc.network_basic
  rm -f $OLDFILESMNTPT/etc/rc.d/rc.services
  rm -f $OLDFILESMNTPT/etc/rc.d/rc.shutdown
  rm -f $OLDFILESMNTPT/etc/rc.d/rc.sysinit
  rm -f $OLDFILESMNTPT/etc/rc.d/rc.update
 fi
 #110422 decrement dotted version number. hard, just set to 0.0...
 [ "$PCLEAN" = "yes" ] && xOLDPVERSION='0.0' #110422
 [ "$PPURGE" = "yes" ] && xOLDPVERSION='0.0' #110422
 if vercmp ${NEWPVERSION} gt ${xOLDPVERSION} ; then #110422
  echo -e "\\033[1;35m"  >/dev/console #35=purple.
  echo "Version cleanup, restoring 'official' files, please wait..." >/dev/console
  echo -en "\\033[0;39m" >/dev/console
  echo "(with a slow CPU this may take sometime, please be patient)" >/dev/console
  #v2.16 do not overwrite rox desktop setup, as /etc/rc.d/rc.update now handles it...
  [ -f $OLDFILESMNTPT/root/Choices/ROX-Filer/PuppyPin ] && touch $OLDFILESMNTPT/root/Choices/ROX-Filer/PuppyPin
  [ -f $OLDFILESMNTPT/root/Choices/ROX-Filer/globicons ] && touch $OLDFILESMNTPT/root/Choices/ROX-Filer/globicons
  mkdir $OLDFILESMNTPT/tmp/versioncleanup
  #make sure that the official boot scripts will be visible at top... 110722 fix...
  rm -f $OLDFILESMNTPT/etc/rc.d/functions
  rm -f $OLDFILESMNTPT/etc/rc.d/functions4puppy4
  rm -f $OLDFILESMNTPT/etc/rc.d/rc.country
  rm -f $OLDFILESMNTPT/etc/rc.d/rc.network_basic
  rm -f $OLDFILESMNTPT/etc/rc.d/rc.services
  rm -f $OLDFILESMNTPT/etc/rc.d/rc.shutdown
  rm -f $OLDFILESMNTPT/etc/rc.d/rc.sysinit
  rm -f $OLDFILESMNTPT/etc/rc.d/rc.update
  #i think if a file exists both in OLDFILESMNTPT and in NEWFILESMNTPT, remove
  #it from OLDFILESMNTPT (as OLDFILESMNTPT is upper layer and will hide the
  #'official' file. But, only do it if 'official' file has a newer modify date...
  cd $NEWFILESMNTPT
  #v2.12 this while-loop has become ultra-slow... seems upx compressed execs
  #responsible, recently upx-ed all the execs, now restore busybox, grep, cp.
  DOTCNT=0
  find ./ -noleaf -type f | sed -e 's/^\.//g' |
  while read ONENEW
  do
   DOTCNT=`expr $DOTCNT + 1`
   [ $DOTCNT -gt 100 ] && DOTCNT=0 #display a dot every time cnts to 100.
   [ $DOTCNT -eq 100 ] && echo -n '*' >/dev/console #v2.12
   #note, screens out spaces also...
   [ ! "`echo -n "$ONENEW" | grep -E '^/dev|^/tmp|^/proc| '`" = "" ] && continue
   ONEBASE="`basename $OLDFILESMNTPT$ONENEW`"
   OLDDIR="`dirname $OLDFILESMNTPT$ONENEW`"
   #a whiteout file 'on top' will hide the 'official' file...
   [ -f $OLDDIR/.wh.$ONEBASE ] && rm -f $OLDDIR/.wh.$ONEBASE
   [ -f $OLDDIR/.wh.__dir_opaque ] && rm -f $OLDDIR/.wh.__dir_opaque #v424 not needed for aufs2
   [ -f $OLDDIR/.wh..wh..opq ] && rm -f $OLDDIR/.wh..wh..opq #110212 recent aufs2, but probably not needed.
   #let's get paranoid and imagine upper-directories also wiped...
   while [ ! "$OLDDIR" = "/" ];do
    OLDDIR="`dirname $OLDDIR`"
    UP1BASE="`basename $OLDDIR`"
    [ -f $OLDDIR/.wh.$UP1BASE ] && rm -f $OLDDIR/.wh.$UP1BASE
    [ -f $OLDDIR/.wh.__dir_opaque ] && rm -f $OLDDIR/.wh.__dir_opaque #v424 not needed for aufs2
    [ -f $OLDDIR/.wh..wh..opq ] && rm -f $OLDDIR/.wh..wh..opq #110212 recent aufs2, but probably not needed.
   done
   #now check for 'old' files on top layer...
   if [ -f $OLDFILESMNTPT$ONENEW ];then
    #note, this is inaccurate due to local timezone not yet set...
    #i got this 'stat' off ibiblio, v3.3. i think older version than in main puppy f.s...
    MODIFOLD=`$PUPFILESDIR/bin/stat -c %Y $OLDFILESMNTPT$ONENEW`
    MODIFNEW=`$PUPFILESDIR/bin/stat -c %Y $NEWFILESMNTPT$ONENEW`
    [ "$PPURGE" = "yes" ] && MODIFNEW=`expr $MODIFOLD + 1` #force overwrite all.
    if [ $MODIFNEW -ge $MODIFOLD ];then
     echo -n " $ONENEW " >/dev/console
     ONEDIR="`dirname $ONENEW`"
     mkdir -p $OLDFILESMNTPT/tmp/versioncleanup$ONEDIR
     cp -af $OLDFILESMNTPT$ONENEW $OLDFILESMNTPT/tmp/versioncleanup$ONEDIR/
     rm -f $OLDFILESMNTPT$ONENEW
    fi
   fi
  done
  echo >/dev/console
  cd /
 fi
 #need to cleanup whiteout files if a new .sfs layer has been added...
 if [ "$NEWUNIONRECORD" != "" -o "$PPURGE" = "yes" ];then
  #find all .wh.__dir_opaque files at the OLDFILESMNTPT layer... v424 bugfixes... 110212 .wh..wh..opq ...
  cd $OLDFILESMNTPT
  find ./ -noleaf -type f -name ".wh.*" | sed -e 's/^\.//g' |
  while read ONEOPAQUE #examples: /usr/src/.wh.__dir_opaque, /usr/src/.wh.bin
  do
   ONEDIR="`dirname $ONEOPAQUE`" #ex: /usr/src
   WHBASE="`basename $ONEOPAQUE`" #ex: .wh.bin
   if [ "$WHBASE" != ".wh.__dir_opaque" -a "$WHBASE" != ".wh..wh..opq" ];then #aufs2 always enter this condition... 110212 extra test.
    #example, .wh.bin alongside bin directory means it is deleted...
    ONEDEL="`echo -n "$WHBASE" | sed -e 's/^\\.wh\\.//g'`" #ex: bin
    ONEDIR="${ONEDIR}/${ONEDEL}" #ex: /usr/src/bin
    [ ! -e ".${ONEDIR}" ] && continue
   fi
   #if same dir exists lower layer, then wipe the opaque file...
   [ -d /pup_ro3${ONEDIR} ] && rm -f ${OLDFILESMNTPT}${ONEOPAQUE}
   [ -d /pup_ro4${ONEDIR} ] && rm -f ${OLDFILESMNTPT}${ONEOPAQUE}
   [ -d /pup_ro5${ONEDIR} ] && rm -f ${OLDFILESMNTPT}${ONEOPAQUE}
   [ -d /pup_ro6${ONEDIR} ] && rm -f ${OLDFILESMNTPT}${ONEOPAQUE}
   [ -d /pup_ro7${ONEDIR} ] && rm -f ${OLDFILESMNTPT}${ONEOPAQUE}
   [ -d /pup_ro8${ONEDIR} ] && rm -f ${OLDFILESMNTPT}${ONEOPAQUE}
   [ -d /pup_ro9${ONEDIR} ] && rm -f ${OLDFILESMNTPT}${ONEOPAQUE}
  done
  cd /
 fi
 if vercmp $NEWPVERSION gt $xOLDPVERSION ; then #110422
  vPATTERN="s%^DISTRO_VERSION=.*%DISTRO_VERSION='${xOLDPVERSION}'%" #110122 mod 110422
  sed -e "$vPATTERN" $OLDFILESMNTPT/etc/DISTRO_SPECS > /tmp/distro_specs_old
  cp -f /tmp/distro_specs_old $OLDFILESMNTPT/etc/DISTRO_SPECS #so rc.update will run.
  sync
  OLDstr='to'
  [ "$xOLDPVERSION" != "0.0" ] && OLDstr="from version $xOLDPVERSION to"
  echo -e "\\033[1;35m"  >/dev/console #34=blue, 33=yellow, 32=green, 31=red, 35=purple, 36=aquablue, 38=black.
  [ "$PCLEAN" = "yes" ] && echo "This is a simulated version upgrade, which performs a file cleanup." >/dev/console
  [ "$PPURGE" = "yes" ] && echo "This is a radical file cleanup for broken systems, could alter some settings." >/dev/console
  echo "You are upgrading Puppy ${OLDstr} ${NEWPVERSION}." >/dev/console #110122 mod
  echo "Overwritten old files have been moved to /tmp/versioncleanup/" >/dev/console
  echo "After bootup please examine this directory (before shutdown) for anything that you might like to recover. Pausing 30 secs so you can read this msg..." >/dev/console
  echo -en "\\033[0;39m" >/dev/console
  sleep 30 #so can see above messages.
 fi
fi

[ "$RDSH" = "6" ] && exec /bin/sh >/dev/console 2>&1 #w091027

#create the layered f.s.... ***THE BIG EVENT***
if [ "$LAYERFS" = "aufs" ];then
 mount -t aufs -o udba=reval,diropq=w,dirs=${UMNTRW}${UMNTRO0}${ALAYER}${YLAYER}${UMNTRO1}${ZLAYER}${UMNTRO} unionfs /pup_new 
else #unionfs
 UMNTRW="`echo -n "$UMNTRW" | sed -e 's/+wh//g'`" #w003 'ro+wh' not accepted by unionfs, change back to 'ro'.
 mount -t unionfs -o dirs=${UMNTRW}${UMNTRO0}${ALAYER}${YLAYER}${UMNTRO1}${ZLAYER}${UMNTRO} unionfs /pup_new
fi
check_status $? #END STEP FIVE
#######################END SETUP UNIONFS LAYERED FILESYSTEM###################

#101127 pakt: code adapted from bchafy's Xin
#his description: "A precfg area for faster re-mastering, no need to regenerate a .SFS
#every time you want to change the core, and no need for a hard drive to store customizations"
if [ -d $PUPSFSDEVMNTPT/precfg ];then
 echo -n "Overlaying preconfig files..." > /dev/console
 SRC="$PUPSFSDEVMNTPT"/precfg
 DEST="/pup_new"
 cd $SRC
 for i in `find . -not -type d -print`; do
  BASEFILE="$i"
  SRCFILE="$SRC/$BASEFILE"
  DESTFILE="$DEST/$BASEFILE"
  DESTDIR=`dirname $DESTFILE`
  MASK="777"
  if test -f "$DESTFILE"; then
   MASK=`stat -c %a $DESTFILE`
  fi
  mkdir -p $DESTDIR
  cp -f $SRCFILE $DESTFILE
  chmod $MASK $DESTFILE
 done
 check_status 0
fi
#END PRECONFIG STEP

#######################SETUP SWITCH TO MAIN FILESYSTEM#######################
echo -n "Performing a 'switch_root' to the layered filesystem..." > /dev/console
#prepare everything for doing a switch_root...
#cpio archive does switch_root, lose the initial-ramfs, so move all mntd...
mkdir -p /pup_new/initrd
mkdir -p /pup_new/initrd/pup_ro1
mkdir -p /pup_new/initrd/pup_ro2
mkdir -p /pup_new/initrd/pup_ro3
mkdir -p /pup_new/initrd/pup_ro4
mkdir -p /pup_new/initrd/pup_ro5
mkdir -p /pup_new/initrd/pup_ro6
mkdir -p /pup_new/initrd/pup_ro7
mkdir -p /pup_new/initrd/pup_ro8
mkdir -p /pup_new/initrd/pup_ro9
mkdir -p /pup_new/initrd/pup_rw
mkdir -p /pup_new/initrd/pup_z
mkdir -p /pup_new/initrd/pup_a
mkdir -p /pup_new/initrd/pup_y
mkdir -p /pup_new/initrd/mnt
mkdir -p /pup_new/initrd/mnt/data
mkdir -p /pup_new/initrd/mnt/dev_ro1
mkdir -p /pup_new/initrd/mnt/dev_ro2
mkdir -p /pup_new/initrd/mnt/dev_save
mkdir -p /pup_new/initrd/mnt/swap
mkdir -p /pup_new/initrd/mnt/tmpfs
mkdir -p /pup_new/initrd/mnt/tmpfs2
mkdir -p /pup_new/initrd/mnt/tmpfs3
mkdir -p /pup_new/initrd/mnt/tmpfs4
mkdir -p /pup_new/initrd/mnt/zdrv
mkdir -p /pup_new/initrd/mnt/adrv
mkdir -p /pup_new/initrd/mnt/ydrv
mkdir -p /pup_new/initrd/tmp
for ONEMNT in `mount | cut -f 3 -d ' ' | grep -v 'pup_new' | grep '^/pup_' | tr '\n' ' '`
do
 mount -o move $ONEMNT /pup_new/initrd${ONEMNT}
done
for ONEMNT in `mount | cut -f 3 -d ' ' | grep '^/mnt/' | tr '\n' ' '`
do
 mount -o move $ONEMNT /pup_new/initrd${ONEMNT}
done
if [ "${PUPSAVEFILE}" -a -d /pup_new/initrd/mnt/dev_save${PUPSAVEFILE} ]; then
 if [ "${CREATEPUPSAVE2FS}" -a -L "${CREATEPUPSAVE2FS}" ]; then
  rm -r -f "/pup_new/initrd${CREATEPUPSAVE2FS}"
  ln -s /initrd/mnt/dev_save${PUPSAVEFILE} /pup_new/initrd${CREATEPUPSAVE2FS} #for after the switch root
 fi
fi

#v4.02 bring back, but allocate more space (/4 instead of /8)....
#v3.97 a problem can run out of /tmp space, remove...
#to minimise writes to pup_save and to speedup, tmpfs on /tmp...
if [ "$CREATETMPFS" != "/pup_rw" ];then #test if no tmpfs on unionfs top layer.
 ALLOCK=`expr $RAMSIZE \/ 4 + $EXTRAALLOCK`
 #v424 don't create tmpfs if have versioncleanup dir... 100423 try again...
  [ ! -e /pup_new/tmp/versioncleanup ] && mount -t tmpfs -o size=${ALLOCK}k tmpfs /pup_new/tmp
fi

#PNOX is a boot param. /etc/profile prevents X from starting if this file exists...
[ "$PNOX" = "yes" ] && touch /pup_new/tmp/bootcnt.txt
cp -a /DISTRO_SPECS /pup_new/initrd/

cp -af /tmp/* /pup_new/initrd/tmp/ #keep any log files.

#091122
mkdir -p /pup_new/lib/keymaps
cp -a -f /lib/keymaps/* /pup_new/lib/keymaps/
mkdir -p /pup_new/lib/consolefonts
cp -a -f /lib/consolefonts/* /pup_new/lib/consolefonts/
if [ "$KMAP" ];then #because PKEYS boot param was defined.
  echo -n "$KMAP" > /pup_new/etc/keymap
  echo -n "$FONTMAP" > /pup_new/etc/fontmap
  echo -n "$CODEPAGE" > /pup_new/etc/codepage
fi

#091225 copy exes to main f.s.
if [ -f /bin/TARGETEXES ];then
 for ONEEXE in `cat /bin/TARGETEXES` #ex: sbin/e2fsck
 do
  BASEEXE="`basename $ONEEXE`"
  [ ! -e /pup_new/$ONEEXE ] && cp -f /bin/$BASEEXE /pup_new/$ONEEXE
 done
 cp -f /bin/TARGETEXES /pup_new/bin/ #100113 puppyinstaller needs this.
fi

#110114 if a drive unplugged in previous boot, but plugged in at bootup, device-nodes will be missing in main f.s...
if [ $DEVTMPFSFLG -eq 0 ];then #130612
 cp -a -u -f /dev/* /pup_new/dev/
else
 mount -t devtmpfs devtmpfs /pup_new/dev
fi

#120215 if PLANG set here, carry it over...
if [ "$PLANG" ];then
 langPTN="s%^LANG=.*%LANG=${PLANG}%"
 sed -i -e "$langPTN" /pup_new/etc/profile
fi

#RDSH is a boot param. exit to initial ramdisk shell...
if [ "$RDSH" = "yes" ];then
 echo > /dev/console
 echo "Dropped to initramfs shell. Type 'exec switch' to continue booting Puppy." > /dev/console
 exec /bin/sh >/dev/console 2>&1
fi

#v3.01 a bit untidy, but cd may still be mounted when it doesn't have to be...
case $PMEDIA in
 *cd)
  [ "$PDEV1" ] && umount /dev/$PDEV1 2>/dev/null #okay if it fails.
  ;;
esac

sync
#killall -USR1 hotplug2 #v423
umount /proc/bus/usb
umount /sys
umount /proc

#now using cpio archive for initramfs 'initial ramdisk'...
exec switch_root /pup_new /sbin/init

###END###