code.delx.au - refind/blob - mvrefind

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