beta-tester
commented
4 years ago follow these steps to create a tails-x64-hotfix-pxe.cpio.xz file that contains the network modules and a patch.
- in
p2-include-handlechangehandle_item '-' iso TAILS_X64;tohandle_item '+' iso TAILS_X64;. - run
bash run.shto gettails-x64.isodownloaded and mounted. - be sure, you have the packages
squashfs-tools,initramfs-toolsandxz-utilsinstalled. - modify the script down below to the actual tails iso content.
- execute the script down below to create the file
tails-x64-hotfix-pxe.cpio.xzthat will contain the missing network modules and a patch- - rerun
bash run.shto get pxe-menu activated for tails.
#!/usr/bin/bash
# ... break=premount
# ... break=init
# ... debug
#
# sudo unsquashfs -d /tmp/test -f /srv/nfs/tails-x64/live/filesystem.squashfs
# $ ls /tmp/test/bin/live-*
# $ ls -r /tmp/test/lib/live/*
# 2024-02-27 for tails 6.0, renamed to all-net-blocklist.conf
# 2024-02-27 for tails 6.0, updated path from /lib/modules/ to /usr/lib/modules/
# 2023-09-11 skip network de-init on boot option "break=init" to keep network alive for debugging
# 2021-11-07 /conf/net_drivers.tar.xz, /conf/conf.d/zzzz-hotfix-pxe, /etc/live/boot/zzzz-hotfix-pxe
# requires:
# squashfs-tools (unsquashfs)
# initramfs-tools (cpio)
# xz-utils (xz)
# location, where to store temporary files
TMP=/tmp/tails-net
# full filename of the filesystem.squashfs from tails ISO
SRC=/srv/nfs/tails-x64/live/filesystem.squashfs
# full filename of the hotfix-pxe image
DST=/srv/nfs/tails-x64-hotfix-pxe.cpio.xz
if [[ -z "${TMP}" ]] || [[ -z "${SRC}" ]] || [[ -z "${DST}" ]]; then
echo "ERROR: undefined variable"
return -1
fi
if ! [[ -d "$(dirname ${TMP:?})" ]] && ! [[ -r "${SRC:?}" ]] && ! [[ -d "$(dirname ${DST:?})" ]]; then
echo "ERROR: wrong file or folder"
return -2
fi
# kernel version of tails
KVER=$(basename $(unsquashfs -l "${SRC:?}" -e /usr/lib/modules/ | grep /usr/lib/modules/ | head -n 1))
(( $? != 0 )) && return -4
# test if kernel version is correct
if [[ -n "${KVER}" ]]; then
echo "INFO: KVER='${KVER:?}'"
else
echo "ERROR: unknown kernel version"
return -3
fi
do_modules() {
# extract missing network kernel drivers modules from tails
sudo unsquashfs \
-d "${TMP:?}" \
-f "${SRC:?}" \
-e "/usr/lib/modules/${KVER:?}/kernel/drivers/net/phy" \
-e "/usr/lib/modules/${KVER:?}/kernel/drivers/net/ethernet" \
;
(( $? != 0 )) && exit -4
# compress missing network kernel drivers modules to file
[[ -e "${TMP:?}/conf/" ]] || sudo mkdir -p "${TMP:?}/conf/"
sudo tar -ravf "${TMP:?}/conf/net_drivers.tar.xz" -C "${TMP:?}" "usr/lib"
sudo rm -rf "${TMP:?}/usr/lib"
}
do_patch_top() {
# add hotfix for pxe boot to initrd image
[[ -e "${TMP:?}/conf/conf.d/" ]] || sudo mkdir -p "${TMP:?}/conf/conf.d/"
cat << EOF | sudo tee "${TMP:?}/conf/conf.d/zzzz-hotfix-pxe" &>/dev/null
#!/usr/bin/sh
# check if we dealing with same kernel version
if [ "\$(uname -r)" != "${KVER:?}" ]; then
. /scripts/functions
log_failure_msg "wrong kernel version. '\$(uname -r)'!='${KVER:?}'"
panic "please visit: https://github.com/beta-tester/RPi-PXE-Server/issues/31"
fi
# comment out all blacklist entries
sed "s/^install/# install/g" -i /etc/modprobe.d/all-net-blocklist.conf
# replace wget script by busybox, for normal behavior
mv /usr/bin/wget /usr/bin/wget.bak
ln -sf /usr/bin/busybox /usr/bin/wget
# replace depmod, for normal behavior
mv /usr/sbin/depmod /usr/sbin/depmod.bak
ln -sf /usr/bin/kmod /usr/sbin/depmod
# excract the compressed drivers in place
tar -xf "/conf/net_drivers.tar.xz" -C /
# rebulid dependencies for added network kernel drivers modules
depmod -b /usr
#
echo '/scripts/init-bottom/zzzz-hotfix-pxe' | tee -a /scripts/init-bottom/ORDER
EOF
(( $? != 0 )) && return -4
sudo chmod +x "${TMP:?}/conf/conf.d/zzzz-hotfix-pxe"
(( $? != 0 )) && return -4
}
do_patch_bottom() {
[[ -e "${TMP:?}/scripts/init-bottom/" ]] || sudo mkdir -p "${TMP:?}/scripts/init-bottom/"
cat << EOF | sudo tee "${TMP:?}/scripts/init-bottom/zzzz-hotfix-pxe" &>/dev/null
#!/usr/bin/sh
patch_bottom()
{
if ! [ -n "\$break" ]; then
# hotfix-pxe for issue with network initialisation in tails
local path_device
for path_device in /sys/class/net/*; do
local name_device
name_device=\$(basename \$path_device)
if [ "\$name_device" != "lo" ]; then
# set network devices down
ip link set \$name_device down
local path_module
path_module=\$(readlink \$path_device/device/driver/module)
if [ -n "\$path_module" ]; then
# remove used network drivers
local name_module
name_module=\$(basename \$path_module)
modprobe -r \$name_module
fi
fi
done
fi
}
patch_bottom
EOF
(( $? != 0 )) && return -4
sudo chmod +x "${TMP:?}/scripts/init-bottom/zzzz-hotfix-pxe"
(( $? != 0 )) && return -4
}
do_initrd() {
# create an initrd image to overlay at boot time
sudo rm "${DST:?}"
cd "${TMP:?}"
(( $? != 0 )) && return -4
find . -type f -print0 | cpio --null --create --verbose --format=newc \
| xz --compress --extreme --check=crc32 | sudo tee "${DST:?}" &>/dev/null
(( $? != 0 )) && return -4
cd -
}
do_cleanup() {
# clean up temporary files
sudo rm -rf "${TMP:?}"
(( $? != 0 )) && return -4
}
do_modules
do_patch_top
do_patch_bottom
do_initrd
do_cleanup
echo done.
modrz44
Tails 4.5 isn't PXE booting, because of missing network modules. /lib/modules/5.4.0-4-amd64/kernel/net/ folder is missing ethernet and phy modules.