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