mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-11-24 14:41:17 +00:00
5a8147479e
To achieve reproducible results, `cpio` archive members are added in sorted order and inodes renumbered. The `cpio-clean.pl` script is made obsolete by setting mtimes via `touch` & using `cpio --reproducible`. Suggested by @dezgeg in https://github.com/NixOS/nixpkgs/pull/21273#issuecomment-268116605. Note that using `--reproducible` means that initial ramdisk creation now requires at least `cpio` version 2.12 (released in 2015).
49 lines
1.1 KiB
Bash
49 lines
1.1 KiB
Bash
source $stdenv/setup
|
|
|
|
set -o pipefail
|
|
|
|
objects=($objects)
|
|
symlinks=($symlinks)
|
|
suffices=($suffices)
|
|
|
|
mkdir root
|
|
|
|
# Needed for splash_helper, which gets run before init.
|
|
mkdir root/dev
|
|
mkdir root/sys
|
|
mkdir root/proc
|
|
|
|
|
|
for ((n = 0; n < ${#objects[*]}; n++)); do
|
|
object=${objects[$n]}
|
|
symlink=${symlinks[$n]}
|
|
suffix=${suffices[$n]}
|
|
if test "$suffix" = none; then suffix=; fi
|
|
|
|
mkdir -p $(dirname root/$symlink)
|
|
ln -s $object$suffix root/$symlink
|
|
done
|
|
|
|
|
|
# Get the paths in the closure of `object'.
|
|
storePaths=$(perl $pathsFromGraph closure-*)
|
|
|
|
|
|
# Paths in cpio archives *must* be relative, otherwise the kernel
|
|
# won't unpack 'em.
|
|
(cd root && cp -prd --parents $storePaths .)
|
|
|
|
|
|
# Put the closure in a gzipped cpio archive.
|
|
mkdir -p $out
|
|
for PREP in $prepend; do
|
|
cat $PREP >> $out/initrd
|
|
done
|
|
(cd root && find * -print0 | xargs -0r touch -h -d '@1')
|
|
(cd root && find * -print0 | sort -z | cpio -o -H newc -R +0:+0 --reproducible --null | $compressor >> $out/initrd)
|
|
|
|
if [ -n "$makeUInitrd" ]; then
|
|
mv $out/initrd $out/initrd.gz
|
|
mkimage -A arm -O linux -T ramdisk -C gzip -d $out/initrd.gz $out/initrd
|
|
fi
|