3a70748bb5
by the program /sbin/splash_helper in the initrd and is called even before /init. * make-initrd.nix: allow a list of FSOs to be placed in the initrd, with a symlink to each top-level FSO (e.g., /init, /sbin/splash_helper, /etc/splash). * make-initrd.nix: pre-create /proc, /dev and /sys, because splash_helper needs them. svn path=/nixu/trunk/; revision=7144
43 lines
1 KiB
Bash
43 lines
1 KiB
Bash
source $stdenv/setup
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set -o pipefail
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objects=($objects)
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symlinks=($symlinks)
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suffices=($suffices)
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mkdir root
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# Needed for splash_helper, which gets run before init.
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mkdir root/dev
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mkdir root/sys
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mkdir root/proc
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for ((n = 0; n < ${#objects[*]}; n++)); do
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object=${objects[$n]}
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symlink=${symlinks[$n]}
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suffix=${suffices[$n]}
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if test "$suffix" = none; then suffix=; fi
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# Get the paths in the closure of `object'.
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closure=closure-$(basename $symlink)
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if ! test -e $closure; then
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echo 'Your Nix installation is too old! Upgrade to nix-0.11pre7038 or newer.'
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exit 1
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fi
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storePaths=$($SHELL $pathsFromGraph $closure)
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# Paths in cpio archives *must* be relative, otherwise the kernel
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# won't unpack 'em.
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(cd root && cp -prd --parents $storePaths .)
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mkdir -p $(dirname root/$symlink)
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ln -s $object$suffix root/$symlink
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done
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# Put the closure in a gzipped cpio archive.
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ensureDir $out
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(cd root && find * -print0 | cpio -ov -H newc --null | gzip -9 > $out/initrd)
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