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nixos/initrd: Do a lazy library copy in hopes to save some space for replaced binaries

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This commit is contained in:
William A. Kennington III 2015-03-29 21:53:25 -07:00
parent 7e9ef553d9
commit eee9efa6da
1 changed files with 21 additions and 17 deletions
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38
nixos/modules/system/boot/stage-1.nix
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@ -39,26 +39,9 @@ let
mkdir -p $out/bin $out/lib
ln -s $out/bin $out/sbin
# Copy ld manually since it isn't detected correctly
cp -pv ${pkgs.glibc}/lib/ld*.so.? $out/lib
copy_bin_and_libs () {
[ -f "$out/bin/$(basename $1)" ] && rm "$out/bin/$(basename $1)"
cp -pdv $1 $out/bin
LDD="$(ldd $1)" || return 0
LIBS="$(echo "$LDD" | awk '{print $3}' | sed '/^$/d')"
for LIB in $LIBS; do
[ ! -f "$out/lib/$(basename $LIB)" ] && cp -pdv $LIB $out/lib
while [ "$(readlink $LIB)" != "" ]; do
LINK="$(readlink $LIB)"
if [ "${LINK:0:1}" != "/" ]; then
LINK="$(dirname $LIB)/$LINK"
fi
LIB="$LINK"
[ ! -f "$out/lib/$(basename $LIB)" ] && cp -pdv $LIB $out/lib
done
done
return 0
}
# Copy BusyBox.
@ -89,6 +72,27 @@ let
${config.boot.initrd.extraUtilsCommands}
# Copy ld manually since it isn't detected correctly
cp -pv ${pkgs.glibc}/lib/ld*.so.? $out/lib
# Copy all of the needed libraries for the binaries
for BIN in $(find $out/{bin,sbin} -type f); do
echo "Copying libs for bin $BIN"
LDD="$(ldd $BIN)" || continue
LIBS="$(echo "$LDD" | awk '{print $3}' | sed '/^$/d')"
for LIB in $LIBS; do
[ ! -f "$out/lib/$(basename $LIB)" ] && cp -pdv $LIB $out/lib
while [ "$(readlink $LIB)" != "" ]; do
LINK="$(readlink $LIB)"
if [ "${LINK:0:1}" != "/" ]; then
LINK="$(dirname $LIB)/$LINK"
fi
LIB="$LINK"
[ ! -f "$out/lib/$(basename $LIB)" ] && cp -pdv $LIB $out/lib
done
done
done
# Strip binaries further than normal.
chmod -R u+w $out
stripDirs "lib bin" "-s"