code.delx.au - refind/blob - mvrefind

   1 #!/bin/bash
   2 #
   3 # Linux script to move an existing rEFInd installation from one directory to
   4 # another
   5 #
   6 # copyright (c) 2013-2015 by Roderick W. Smith
   7 #
   8 # This program is licensed under the terms of the GNU GPL, version 3,
   9 # or (at your option) any later version.
  10 # You should have received a copy of the GNU General Public License
  11 # along with this program. If not, see <http://www.gnu.org/licenses/>.
  12
  13 # Usage:
  14 #
  15 # ./mvrefind /path/to/source /path/to/destination
  16 #
  17 # Typically used to "hijack" or "unhijack" a Windows boot loader location or
  18 # to help convert a rEFInd installation made in BIOS mode to one that works
  19 # in EFI mode.
  20 #
  21 # Revision history:
  22 #
  23 # 0.10.1  -- Generalized to support ARM64 (aka AARCH64, aa64)
  24 # 0.10.0  -- Renamed from mvrefind.sh to mvrefind
  25 # 0.6.3   -- Initial release
  26 #
  27 # Note: mvrefind version numbers match those of the rEFInd package
  28 # with which they first appeared.
  29
  30 RootDir="/"
  31 SourceShim="shim.efi"
  32 TargetShim=$SourceShim
  33 SourceDir=`readlink -f ${1}`
  34 TargetDir=`readlink -f ${2}`
  35
  36 # Identifies the ESP's location (/boot or /boot/efi); aborts if the ESP isn't
  37 # mounted at either location. Also splits the ESP location from SourceDir and
  38 # TargetDir, leaving them intact but creating new EspSourceDir and EspTargetDir
  39 # variables containing only the ESP components thereof. These new variables
  40 # are also converted to all-lowercase and any trailing slash is stripped, to
  41 # assist in comparisons. (This is reasonable because FAT is case-insensitive.)
  42 # Sets InstallDir to the ESP mount point.
  43 FindLinuxESP() {
  44    EspLine=`df $RootDir/boot/efi 2> /dev/null | grep boot/efi`
  45    if [[ ! -n $EspLine ]] ; then
  46       EspLine=`df $RootDir/boot | grep boot`
  47    fi
  48    InstallDir=`echo $EspLine | cut -d " " -f 6`
  49    if [[ -n $InstallDir ]] ; then
  50       EspFilesystem=`grep $InstallDir /etc/mtab | cut -d " " -f 3`
  51    fi
  52    if [[ $EspFilesystem != 'vfat' ]] ; then
  53       echo "$RootDir/boot/efi doesn't seem to be on a VFAT filesystem. The ESP must be"
  54       echo "mounted at $RootDir/boot or $RootDir/boot/efi and it must be VFAT! Aborting!"
  55       exit 1
  56    fi
  57
  58    # Sanity check on source & target....
  59    EspPathLength=`expr length $InstallDir`
  60    Temp=`echo $SourceDir | cut -c 1-$EspPathLength`
  61    if [[ $Temp != $InstallDir ]] ; then
  62       echo "$SourceDir isn't on the ESP ($InstallDir)! Aborting!"
  63       exit 1
  64    fi
  65    Temp=`echo $TargetDir | cut -c 1-$EspPathLength`
  66    if [[ $Temp != $InstallDir ]] ; then
  67       echo "$TargetDir isn't on the ESP ($InstallDir)! Aborting!"
  68       exit 1
  69    fi
  70
  71    # Temporarily replace "/" in pathnames with ",", so as to enable sed to
  72    # work on them
  73    TempInstallDir=`echo $InstallDir | tr '/' ','`
  74    Temp=`echo $SourceDir | tr '/' ',' | sed s/${TempInstallDir}//g | tr ',' '/' | tr '[A-Z]' '[a-z]'`
  75    EspSourceDir=`dirname $Temp`/`basename $Temp`
  76    Temp=`echo $TargetDir | tr '/' ',' | sed s/${TempInstallDir}//g | tr ',' '/' | tr '[A-Z]' '[a-z]'`
  77    EspTargetDir=`dirname $Temp`/`basename $Temp`
  78    if [[ $EspSourceDir == $EspTargetDir ]] ; then
  79       echo "$SourceDir is the same as $TargetDir! Aborting!"
  80       exit 1
  81    fi
  82 } # FindLinuxESP
  83
  84 DeterminePlatform() {
  85     CpuType=`uname -m`
  86     case "$CpuType" in
  87     aarch64)
  88         Platform="aa64"
  89         ;;
  90     x86_64)
  91         Platform="x64"
  92         ;;
  93     i?86)
  94         Platform="ia32"
  95         ;;
  96     *)
  97         echo "Unsupported CPU type; aborting!"
  98         exit 1
  99     esac
 100     Source="refind_$Platform.efi"
 101     Target=$Source
 102 }
 103
 104 # Adjust filename variables appropriately for their locations and detected
 105 # presence (or lack thereof) of shim installation
 106 AdjustFilenames() {
 107    if [[ -f $SourceDir/grub$Platform.efi ]] ; then
 108       Source="grub$Platform.efi"
 109       Target=$Source
 110       if [[ $EspSourceDir == "/efi/boot" ]] ; then
 111          SourceShim="boot$Platform.efi"
 112       elif [[ $EspSourceDir == "/efi/microsoft/boot" ]] ; then
 113          SourceShim="bootmgfw.efi"
 114       fi
 115    else
 116       SourceShim="none"
 117       TargetShim="none"
 118       if [[ $EspSourceDir == "/efi/boot" ]] ; then
 119          Source="boot$Platform.efi"
 120       elif [[ $EspSourceDir == "/efi/microsoft/boot" ]] ; then
 121          Source="bootmgfw.efi"
 122       fi
 123    fi
 124
 125    if [[ $EspTargetDir == "/efi/boot" ]] ; then
 126       if [[ $TargetShim == "none" ]] ; then
 127          Target="boot$Platform.efi"
 128       else
 129          TargetShim="boot$Platform.efi"
 130       fi
 131    elif [[ $EspTargetDir == "/efi/microsoft/boot" ]] ; then
 132       if [[ $TargetShim == "none" ]] ; then
 133          Target="bootmgfw.efi"
 134       else
 135          TargetShim="bootmgfw.efi"
 136       fi
 137    fi
 138 } # AdjustFilenames()
 139
 140 # Checks for the presence of necessary files, including both boot loaders
 141 # and support utilities (efibootmgr, etc.)
 142 CheckForFiles() {
 143    if [[ (! -f $SourceDir/$Source) ||
 144          ($SourceShim != "none" && ! -f $SourceDir/SourceShim) ||
 145          ! -f $SourceDir/refind.conf ]] ; then
 146       echo "There doesn't seem to be a rEFInd installation at $SourceDir!"
 147       echo "Aborting!"
 148       exit 1
 149    fi
 150    if [[ $EspTargetDir != "/efi/boot" && $EspTargetDir != "/efi/microsoft/boot" ]] ; then
 151       Efibootmgr=`which efibootmgr 2> /dev/null`
 152       if [[ ! -f $Efibootmgr ]] ; then
 153          echo "Moving to a non-default directory requires a working efibootmgr utility, but"
 154          echo "one can't be found! Aborting!"
 155          exit 1
 156       elif [[ ! -d "/sys/firmware/efi" ]] ; then
 157          echo "Moving to a non-default directory requires a boot into EFI mode, but we seem"
 158          echo "to be running in BIOS mode. (Perhaps typing 'modprobe efivars' will fix this."
 159          echo "Aborting!"
 160       fi
 161    fi
 162 } # CheckForFiles()
 163
 164 # Do final checks & then move the files!
 165 MoveFiles() {
 166    ExistingFiles=`find $TargetDir -name "*.efi" 2> /dev/null`
 167    if [[ -n $ExistingFiles && $EspTargetDir != "/efi/boot" && $EspTargetDir != "/efi/microsoft/boot" ]] ; then
 168       echo "$TargetDir isn't empty! Aborting!"
 169       exit 1
 170    fi
 171
 172    if [[ $EspTargetDir == "/efi/boot" && -d $TargetDir ]] ; then
 173       if [[ -d $InstallDir/EFI/BOOT-rEFIndBackup ]] ; then
 174          echo ""
 175          echo "Caution: An existing backup of a default boot loader exists! If the current"
 176          echo "default boot loader and the backup are different boot loaders, the current"
 177          echo "one will become inaccessible."
 178          echo ""
 179          echo -n "Do you want to proceed with moving (Y/N)? "
 180          read YesNo
 181          if [[ $YesNo == "Y" || $YesNo == "y" ]] ; then
 182             echo "OK; continuing with the move..."
 183          else
 184             exit 0
 185          fi
 186       else
 187          mv $TargetDir $InstallDir/EFI/BOOT-refindBackup &> /dev/null
 188       fi
 189    fi
 190
 191    if [[ $EspTargetDir == "/efi/microsoft/boot" && -d $TargetDir ]] ; then
 192       mv -n $EspTargetDir/bootmgfw.efi $InstallDir/EFI/Microsoft/
 193    fi
 194
 195    mkdir -p $TargetDir
 196    mv $SourceDir/icons $TargetDir/ 2> /dev/null
 197    mv $SourceDir/icons-backup $TargetDir/ 2> /dev/null
 198    mv $SourceDir/drivers_* $TargetDir/ 2> /dev/null
 199    mv $SourceDir/keys $TargetDir 2> /dev/null
 200    mv $SourceDir/$Source $TargetDir/$Target 2> /dev/null
 201    mv $SourceDir/$SourceShim $TargetDir/$TargetShim 2> /dev/null
 202    mv $SourceDir/refind.conf* $TargetDir/ 2> /dev/null
 203    rmdir $SourceDir 2> /dev/null
 204 } # MoveFiles()
 205
 206 # Clean up after moving files -- mainly restoring old backed-up files, if present
 207 PostMoveCleanup() {
 208    if [[ $EfiSourceDir == "/efi/boot" && -d $InstallDir/EFI/BOOT-rEFIndBackup && ! -d $SourceDir ]] ; then
 209       mv $InstallDir/EFI/BOOT-rEFIndBackup $SourceDir 2> /dev/null
 210    fi
 211    if [[ $EfiSourceDir == "/efi/microsoft/boot" && -f $InstallDir/EFI/Microsoft/bootmgfw.efi ]] ; then
 212       mv -n $InstallDir/EFI/Microsoft/bootmgfw.efi $SourceDir/bootmgfw.efi
 213    fi
 214 } # PostMoveCleanup()
 215
 216 # If necessary, create a new NVRAM entry for the new location
 217 AddNvramEntry() {
 218    InstallIt="0"
 219    Efibootmgr=`which efibootmgr 2> /dev/null`
 220    InstallDisk=`grep $InstallDir /etc/mtab | cut -d " " -f 1 | cut -c 1-8`
 221    PartNum=`grep $InstallDir /etc/mtab | cut -d " " -f 1 | cut -c 9-10`
 222
 223    if [[ $TargetShim != "none" ]] ; then
 224       EntryFilename=$EspTargetDir/$TargetShim
 225    else
 226       EntryFilename=$EspTargetDir/$Target
 227    fi # if/else
 228
 229    EfiEntryFilename=`echo ${EntryFilename//\//\\\}`
 230    EfiEntryFilename2=`echo ${EfiEntryFilename} | sed s/\\\\\\\\/\\\\\\\\\\\\\\\\/g`
 231    ExistingEntry=`$Efibootmgr -v | grep -i $EfiEntryFilename2`
 232
 233    if [[ $ExistingEntry ]] ; then
 234       ExistingEntryBootNum=`echo $ExistingEntry | cut -c 5-8`
 235       FirstBoot=`$Efibootmgr | grep BootOrder | cut -c 12-15`
 236       if [[ $ExistingEntryBootNum != $FirstBoot ]] ; then
 237          $Efibootmgr -b $ExistingEntryBootNum -B &> /dev/null
 238          InstallIt="1"
 239       fi
 240    else
 241       InstallIt="1"
 242    fi
 243
 244    if [[ $InstallIt == "1" ]] ; then
 245       if [[ $EfiTargetDir == "/efi/microsoft/boot" ]] ; then
 246          # Name it the way some firmware expects -- see http://mjg59.dreamwidth.org/20187.html
 247          $Efibootmgr -c -l $EfiEntryFilename -L "Windows Boot Manager" -d $InstallDisk -p $PartNum &> /dev/null
 248       else
 249          $Efibootmgr -c -l $EfiEntryFilename -L "rEFInd Boot Manager" -d $InstallDisk -p $PartNum &> /dev/null
 250       fi
 251       if [[ $? != 0 ]] ; then
 252          EfibootmgrProblems=1
 253       fi
 254    fi
 255
 256    if [[ $EfibootmgrProblems ]] ; then
 257       echo
 258       echo "ALERT: There were problems running the efibootmgr program! Your moved rEFInd"
 259       echo "might not run!"
 260       echo
 261    fi
 262 } # AddNvramEntry
 263
 264 #
 265 # Main body of script
 266 #
 267
 268 if [[ $# != 2 ]] ; then
 269    echo "Usage: $0 {source-directory} {target-directory}"
 270    exit 1
 271 fi
 272 if [[ `whoami` != "root" ]] ; then
 273    echo "Not running as root! Aborting!"
 274    exit 1
 275 fi
 276
 277 FindLinuxESP
 278 DeterminePlatform
 279 AdjustFilenames
 280 CheckForFiles
 281 MoveFiles
 282 PostMoveCleanup
 283 AddNvramEntry