455db168b3
This changes the bootloader for iso generation from Grub to syslinux. In addition this adds USB booting support, so that "dd" can be used to burn the generated ISO to USB thumbdrives instead of needing applications like UnetBootin.
124 lines
3 KiB
Bash
124 lines
3 KiB
Bash
source $stdenv/setup
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sources_=($sources)
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targets_=($targets)
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objects=($objects)
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symlinks=($symlinks)
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# Remove the initial slash from a path, since genisofs likes it that way.
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stripSlash() {
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res="$1"
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if test "${res:0:1}" = /; then res=${res:1}; fi
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}
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stripSlash "$bootImage"; bootImage="$res"
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if test -n "$bootable"; then
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# The -boot-info-table option modifies the $bootImage file, so
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# find it in `contents' and make a copy of it (since the original
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# is read-only in the Nix store...).
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for ((i = 0; i < ${#targets_[@]}; i++)); do
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stripSlash "${targets_[$i]}"
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if test "$res" = "$bootImage"; then
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echo "copying the boot image ${sources_[$i]}"
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cp "${sources_[$i]}" boot.img
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chmod u+w boot.img
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sources_[$i]=boot.img
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fi
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done
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isoBootFlags="-eltorito-boot ${bootImage}
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-eltorito-catalog .boot.cat
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-no-emul-boot -boot-load-size 4 -boot-info-table"
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fi
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if test -n "$usbBootable"; then
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usbBootFlags="-isohybrid-mbr ${isohybridMbrImage}"
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fi
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if test -n "$efiBootable"; then
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efiBootFlags="-eltorito-alt-boot
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-e $efiBootImage
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-no-emul-boot
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-isohybrid-gpt-basdat"
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fi
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touch pathlist
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# Add the individual files.
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for ((i = 0; i < ${#targets_[@]}; i++)); do
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stripSlash "${targets_[$i]}"
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echo "$res=${sources_[$i]}" >> pathlist
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done
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# Add the closures of the top-level store objects.
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storePaths=$(perl $pathsFromGraph closure-*)
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for i in $storePaths; do
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echo "${i:1}=$i" >> pathlist
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done
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# Also include a manifest of the closures in a format suitable for
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# nix-store --load-db.
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if [ -n "$object" ]; then
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printRegistration=1 perl $pathsFromGraph closure-* > nix-path-registration
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echo "nix-path-registration=nix-path-registration" >> pathlist
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fi
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# Add symlinks to the top-level store objects.
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for ((n = 0; n < ${#objects[*]}; n++)); do
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object=${objects[$n]}
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symlink=${symlinks[$n]}
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if test "$symlink" != "none"; then
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mkdir -p $(dirname ./$symlink)
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ln -s $object ./$symlink
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echo "$symlink=./$symlink" >> pathlist
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fi
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done
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# Escape filenames that contain '='.
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# TODO: Handle this properly. This fails for filenames
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# that contain multiple '=' symbols.
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cat pathlist | sed -e 's/=\(.*\)=\(.*\)=/\\=\1=\2\\=/' | tee pathlist.safer
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mkdir -p $out/iso
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xorriso="xorriso
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-as mkisofs
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-iso-level 3
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-volid ${volumeID}
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-appid nixos
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-publisher nixos
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-graft-points
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-full-iso9660-filenames
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${isoBootFlags}
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${usbBootFlags}
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${efiBootFlags}
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-r
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-path-list pathlist.safer
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--sort-weight 0 /
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--sort-weight 1 /isolinux" # Make sure isolinux is near the beginning of the ISO
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$xorriso -output $out/iso/$isoName
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if test -n "$usbBootable"; then
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echo "Making image hybrid..."
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isohybrid --uefi $out/iso/$isoName
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fi
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if test -n "$compressImage"; then
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echo "Compressing image..."
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bzip2 $out/iso/$isoName
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fi
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mkdir -p $out/nix-support
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echo $system > $out/nix-support/system
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