| .. | |||||
| conf-hooks.d | |||||
| conf.d | |||||
| hooks | |||||
| modules.d | |||||
| scripts | |||||
| hook-functions | |||||
| init | |||||
| modules |
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# -*- shell-script -*-
catenate_cpiogz() {
# Sanity check
if [ ! -e "${1}" ]; then
echo "W: catenate_cpiogz: arg1='${1}' does not exist." >&2
return
fi
cat "${1}" >>"${__TMPCPIOGZ}"
}
prepend_earlyinitramfs() {
# Sanity check
if [ ! -e "${1}" ]; then
echo "W: prepend_earlyinitramfs: arg1='${1}' does not exist." >&2
return
fi
cat "${1}" >>"${__TMPEARLYCPIO}"
}
# force_load module [args...]
force_load()
{
manual_add_modules "$1"
echo "${@}" >>"${DESTDIR}/conf/modules"
}
# Takes a file containing a list of modules to be added as an
# argument, figures out dependancies, and adds them.
#
# Input file syntax:
#
# # comment
# modprobe_module_name [args ...]
# [...]
#
add_modules_from_file()
{
# Sanity check
if [ ! -e "${1}" ]; then
echo "W: add_modules_from_file: arg1='${1}' does not exist." >&2
return
fi
grep '^[^#]' "${1}" | while read -r module args; do
[ -n "$module" ] || continue
force_load "${module}" "${args}"
done
}
# Add dependent modules + eventual firmware
manual_add_modules()
{
local prefix kmod options firmware
if [ $# -eq 0 ]; then
return
fi
# modprobe --ignore-install inhibits processing of 'install'
# configuration lines, so that instead we will see 'insmod
# module.ko' as we want. However it also means that 'softdep'
# configuration lines and embedded softdep information is not
# processed. So we run twice, with and without this option.
# shellcheck disable=SC2034
{ modprobe --all --set-version="${version?}" --ignore-install --quiet --show-depends "$@";
modprobe --all --set-version="${version}" --quiet --show-depends "$@"; } |
while read -r prefix kmod options ; do
if [ "${prefix}" != "insmod" ]; then
continue
fi
copy_file module "${kmod}" || continue
# Add required firmware
for firmware in $(modinfo -k "${version}" -F firmware "${kmod}"); do
if [ -e "${DESTDIR}/lib/firmware/${firmware}" ] \
|| [ -e "${DESTDIR}/lib/firmware/${version}/${firmware}" ]; then
continue
fi
# Only print warning for missing fw of loaded module
# or forced loaded module
if [ ! -e "/lib/firmware/${firmware}" ] \
&& [ ! -e "/lib/firmware/${version}/${firmware}" ] ; then
# Only warn about missing firmware if
# /proc/modules exists
if [ ! -e /proc/modules ] ; then
continue
fi
kmod_modname="${kmod##*/}"
kmod_modname="${kmod_modname%%.*}"
if grep -q "^$kmod_modname\\>" /proc/modules "${CONFDIR}/modules"; then
echo "W: Possible missing firmware /lib/firmware/${firmware} for module ${kmod_modname}" >&2
fi
continue
fi
if [ -e "/lib/firmware/${version}/${firmware}" ]; then
copy_file firmware \
"/lib/firmware/${version}/${firmware}"
else
copy_file firmware "/lib/firmware/${firmware}"
fi
done
done
}
# $1 = file type (for logging)
# $2 = file to copy to initramfs
# $3 (optional) Name for the file on the initramfs
# Location of the image dir is assumed to be $DESTDIR
# If the target exists, we leave it and return 1.
# On any other error, we return >1.
copy_file() {
local type src target link_target
type="${1}"
src="${2}"
target="${3:-$2}"
[ -f "${src}" ] || return 2
if [ -d "${DESTDIR}/${target}" ]; then
target="${target}/${src##*/}"
fi
# Canonicalise usr-merged target directories
case "${target}" in
/bin/* | /lib* | /sbin/*) target="/usr${target}" ;;
esac
# check if already copied
[ -e "${DESTDIR}/${target}" ] && return 1
mkdir -p "${DESTDIR}/${target%/*}"
if [ -h "${src}" ]; then
# We don't need to replicate a chain of links completely;
# just link directly to the ultimate target
link_target="$(readlink -f "${src}")" || return $(($? + 1))
# Update source for the copy
src="${link_target}"
# Canonicalise usr-merged target directories
case "${link_target}" in
/bin/* | /lib* | /sbin/*) link_target="/usr${link_target}" ;;
esac
if [ "${link_target}" != "${target}" ]; then
[ "${verbose?}" = "y" ] && echo "Adding ${type}-link ${src}"
# Create a relative link so it always points
# to the right place
ln -rs "${DESTDIR}/${link_target}" "${DESTDIR}/${target}"
fi
# Copy the link target if it doesn't already exist
target="${link_target}"
[ -e "${DESTDIR}/${target}" ] && return 0
mkdir -p "${DESTDIR}/${target%/*}"
fi
[ "${verbose}" = "y" ] && echo "Adding ${type} ${src}"
cp -pP "${src}" "${DESTDIR}/${target}" || return $(($? + 1))
}
# $1 = executable to copy to initramfs, with library dependencies
# $2 (optional) Name for the file on the initramfs
# Location of the image dir is assumed to be $DESTDIR
# We never overwrite the target if it exists.
copy_exec() {
local src target x nonoptlib ret
src="${1}"
target="${2:-$1}"
copy_file binary "${src}" "${target}" || return $(($? - 1))
# Copy the dependant libraries
for x in $(ldd "${src}" 2>/dev/null | sed -e '
/\//!d;
/linux-gate/d;
/=>/ {s/.*=>[[:blank:]]*\([^[:blank:]]*\).*/\1/};
s/[[:blank:]]*\([^[:blank:]]*\) (.*)/\1/' 2>/dev/null); do
# Try to use non-optimised libraries where possible.
# We assume that all HWCAP libraries will be in tls,
# sse2, vfp or neon.
nonoptlib=$(echo "${x}" | sed -e 's#/lib/\([^/]*/\)\?\(tls\|i686\|sse2\|neon\|vfp\).*/\(lib.*\)#/lib/\1\3#')
nonoptlib=$(echo "${nonoptlib}" | sed -e 's#-linux-gnu/\(tls\|i686\|sse2\|neon\|vfp\).*/\(lib.*\)#-linux-gnu/\2#')
if [ -e "${nonoptlib}" ]; then
x="${nonoptlib}"
fi
copy_file library "${x}" || {
ret=$?
[ ${ret} = 1 ] || return $((ret - 1))
}
done
}
# Copy entire subtrees to the initramfs
copy_modules_dir()
{
local kmod first exclude
local modules=
local dir="$1"
shift
if ! [ -d "${MODULESDIR}/${dir}" ]; then
return;
fi
if [ "${verbose}" = "y" ]; then
echo "Copying module directory ${dir}"
if [ $# -ge 1 ]; then
echo "(excluding $*)"
fi
fi
# Build up an expression for find
first=true
for exclude in "$@"; do
# Change .ko suffix in exclusion to .ko*
if [ "${exclude%.ko}" != "${exclude}" ]; then
exclude="${exclude}*"
fi
$first && set --
set -- "$@" -name "${exclude}" -prune -o
first=false
done
# shellcheck disable=SC2044
for kmod in $(find "${MODULESDIR}/${dir}" "$@" -name '*.ko*' -printf '%f\n'); do
modules="$modules ${kmod%%.*}"
done
# shellcheck disable=SC2086
manual_add_modules $modules
}
# walk /sys for relevant modules
sys_walk_mod_add()
{
local driver_path module device_path modalias
device_path="$1"
while [ "${device_path}" != "/sys" ]; do
# device modalias
if [ -e "${device_path}/modalias" ]; then
modalias=$(cat "${device_path}/modalias")
if [ -n "${modalias}" ]; then
manual_add_modules "${modalias}"
fi
fi
# current driver module
driver_path="$(readlink -f "${device_path}/driver/module")"
if [ -e "$driver_path" ]; then
module="$(basename "$(readlink -f "$driver_path")")"
if [ -n "${module}" ]; then
manual_add_modules "${module}"
fi
fi
device_path="$(dirname "${device_path}")"
done
}
block_dev_sys_walk_mod_add()
{
local dev_sys_path disk_sys_path component
# Resolve symlink so sys_walk_mod_add can walk up the hierarchy
dev_sys_path="$(readlink -f "$1")"
# Find whole disk from partition
if grep -q "^DEVTYPE=partition$" "$dev_sys_path/uevent"; then
disk_sys_path="$dev_sys_path/.."
else
disk_sys_path="$dev_sys_path"
fi
# Iterate over component of a layered device
find "$disk_sys_path/slaves" -mindepth 1 -maxdepth 1 | while read -r component; do
block_dev_sys_walk_mod_add "$component"
done
sys_walk_mod_add "${dev_sys_path}"
}
block_dev_mod_add()
{
local dev_node dev_num dev_sys_path
dev_node="$1"
# Look up device number and convert to decimal as it appears in sysfs
dev_num="$(stat -L -c %t:%T "$dev_node")"
dev_num="$((0x${dev_num%:*})):$((0x${dev_num#*:}))"
# Look up device in sysfs
dev_sys_path="/sys/dev/block/$dev_num"
if [ ! -d "$dev_sys_path" ]; then
echo "mkinitramfs: for device ${dev_node} missing ${dev_sys_path}" >&2
echo "mkinitramfs: workaround is MODULES=most" >&2
echo "mkinitramfs: Error please report the bug" >&2
exit 1
fi
block_dev_sys_walk_mod_add "$dev_sys_path"
}
# Copy all loaded or built-in modules matching the given pattern.
# Pattern mustn't include directory or '.ko' suffix but should use
# '[-_]' to allow for differences in naming between /sys/module and
# modules.builtin.
add_loaded_modules()
{
local pattern="$1"
local module builtin
builtin="/lib/modules/$(uname -r)/modules.builtin"
for module in /sys/module/$pattern; do
if [ -d "$module" ]; then
manual_add_modules "$(basename "$module")"
fi
done
if [ -f "$builtin" ]; then
while read -r module; do
case "$module" in
*/$pattern.ko)
manual_add_modules "$(basename "$module" .ko)"
;;
esac
done < "$builtin"
fi
}
# find and only copy modules relevant to a mountpoint
dep_add_modules_mount()
{
local dir dev_node FSTYPE
dir="$1"
# require mounted sysfs
if [ ! -d /sys/devices/ ]; then
echo "mkinitramfs: MODULES dep requires mounted sysfs on /sys" >&2
exit 1
fi
# find out block device + fstype
# shellcheck disable=SC2034
eval "$(while read -r dev mp fs opts rest ; do \
[ "$mp" = "$dir" ] && [ "$fs" != "rootfs" ] \
&& printf "dev_node=%s\\nFSTYPE=%s" "$dev" "$fs"\
&& break; done < /proc/mounts)"
# Only the root mountpoint has to exist; do nothing if any other
# directory is not a mountpoint.
if [ "$dir" != / ] && [ -z "$dev_node" ]; then
return
fi
# handle ubifs and return since ubifs is mounted on char devices
# but most of the commands below only work with block devices.
if [ "${FSTYPE}" = "ubifs" ]; then
manual_add_modules "${FSTYPE}"
return
fi
if [ "$dir" = / ] && [ "${dev_node}" = "/dev/root" ] ; then
if [ -b "${dev_node}" ]; then
# Match it to the canonical device name by UUID
dev_node="/dev/disk/by-uuid/"$(blkid -o value -s UUID "${dev_node}") 2>/dev/null
else
# Does not exist in our namespace, so look at the
# kernel command line
dev_node=
# shellcheck disable=SC2013
for arg in $(cat /proc/cmdline); do
case "$arg" in
root=*)
dev_node="${arg#root=}"
if [ "${dev_node#/dev/}" = "$dev_node" ]; then
dev_node="/dev/$dev_node"
fi
;;
--)
break
;;
*)
;;
esac
done
fi
fi
# recheck device
if [ -z "$dev_node" ] || ! dev_node="$(readlink -f "${dev_node}")" \
|| ! [ -b "$dev_node" ]; then
echo "mkinitramfs: failed to determine device for $dir" >&2
echo "mkinitramfs: workaround is MODULES=most, check:" >&2
echo "grep -r MODULES ${CONFDIR}" >&2
echo "" >&2
echo "Error please report bug on initramfs-tools" >&2
echo "Include the output of 'mount' and 'cat /proc/mounts'" >&2
exit 1
fi
# do not trust mount, check superblock
eval "$(/usr/lib/klibc/bin/fstype "${dev_node}")"
# check that fstype fs recognition
if [ "${FSTYPE}" = "unknown" ]; then
FSTYPE=$(blkid -o value -s TYPE "${dev_node}")
if [ -z "${FSTYPE}" ]; then
echo "mkinitramfs: unknown fstype on device ${dev_node}" >&2
echo "mkinitramfs: workaround is MODULES=most" >&2
echo "Error please report bug on initramfs-tools" >&2
exit 1
fi
fi
# Add filesystem
manual_add_modules "${FSTYPE}"
block_dev_mod_add "$dev_node"
}
dep_add_modules()
{
local device dev_node
local modules=
dep_add_modules_mount /
dep_add_modules_mount /usr
if [ -n "${RESUME}" ]; then
dev_node="$(resolve_device "${RESUME}")"
if [ -n "${dev_node}" ]; then
block_dev_mod_add "${dev_node}"
fi
fi
# sys walk some important device classes
for class in extcon gpio phy regulator rtc; do
for device in "/sys/class/$class"/*; do
device="$(readlink -f "$device")" \
&& sys_walk_mod_add "$device"
done
done
# clk, USB-PHY and pinctrl devices are outside the device model (!) so
# match loaded modules by name
add_loaded_modules 'clk[-_]*'
add_loaded_modules 'phy[-_]*'
add_loaded_modules 'pinctrl[-_]*'
# Sys walk keyboards. We identify keyboards as input devices
# that can generate at least key events 1-31; udev has the
# same heuristic. Note that the format of the bitmap
# properties depends on the word size of the process reading
# the uevent file!
for device in /sys/class/input/input*; do
if grep -qs "^KEY=.*fffffff[ef]$" "${device}/uevent"; then
sys_walk_mod_add "$(readlink -f "$device")"
fi
done
# catch old-style IDE
if [ -e /sys/bus/ide/devices/ ]; then
modules="$modules ide-gd_mod ide-cd"
fi
if [ -e /sys/bus/scsi/devices/ ]; then
modules="$modules sd_mod"
fi
if [ -e /sys/bus/mmc/devices/ ]; then
modules="$modules mmc_block"
fi
if [ -e /sys/bus/virtio ] ; then
modules="$modules virtio_pci virtio_mmio"
fi
if [ -e /sys/bus/i2o/devices/ ]; then
force_load i2o_block
force_load i2o_config
fi
if [ -e /sys/bus/ps3_system_bus/ ]; then
modules="$modules ps3disk ps3rom ps3-gelic ps3_sys_manager"
fi
if [ -e /sys/bus/vio/ ]; then
modules="$modules sunvnet sunvdc"
fi
# shellcheck disable=SC2086
manual_add_modules $modules
}
# The modules "most" classes added per default to the initramfs
auto_add_modules()
{
local arg
local modules=
if [ "$#" -eq 0 ] ; then
set -- base net ide scsi block ata i2o dasd ieee1394 firewire mmc usb_storage
fi
for arg in "$@" ; do
case "$arg" in
base)
modules="$modules btrfs ext2 ext3 ext4 ext4dev "
modules="$modules isofs jfs reiserfs udf xfs"
modules="$modules nfs nfsv2 nfsv3 nfsv4"
modules="$modules af_packet atkbd i8042 psmouse"
modules="$modules virtio_pci virtio_mmio"
# Include most USB host and dual-role drivers
copy_modules_dir kernel/drivers/usb/host \
hwa-hc.ko sl811_cs.ko sl811-hcd.ko \
u132-hcd.ko whci-hcd.ko
copy_modules_dir kernel/drivers/usb/c67x00
copy_modules_dir kernel/drivers/usb/chipidea
copy_modules_dir kernel/drivers/usb/dwc2
copy_modules_dir kernel/drivers/usb/dwc3
copy_modules_dir kernel/drivers/usb/isp1760
copy_modules_dir kernel/drivers/usb/musb
copy_modules_dir kernel/drivers/usb/renesas_usbhs
# and any extcon drivers for USB
modules="$modules extcon-usb-gpio extcon-usbc-cros-ec"
# Add the axp20x_usb_power power supply driver,
# required to initialize the USB host controllers
# on a number of armhf systems
modules="$modules axp20x_usb_power"
# Include all keyboard drivers and all HID drivers
# unless we're sure they don't support keyboards.
# hid-*ff covers various game controllers with
# force feedback.
copy_modules_dir kernel/drivers/input/keyboard
copy_modules_dir kernel/drivers/hid \
'hid-*ff.ko' hid-a4tech.ko hid-cypress.ko \
hid-dr.ko hid-elecom.ko hid-gyration.ko \
hid-icade.ko hid-kensington.ko hid-kye.ko \
hid-lcpower.ko hid-magicmouse.ko \
hid-multitouch.ko hid-ntrig.ko \
hid-petalynx.ko hid-picolcd.ko hid-pl.ko \
hid-ps3remote.ko hid-quanta.ko \
'hid-roccat-ko*.ko' hid-roccat-pyra.ko \
hid-saitek.ko hid-sensor-hub.ko hid-sony.ko \
hid-speedlink.ko hid-tivo.ko hid-twinhan.ko \
hid-uclogic.ko hid-wacom.ko hid-waltop.ko \
hid-wiimote.ko hid-zydacron.ko
# needed to access keyboard on some ChromeOS devices
modules="$modules cros_ec_spi"
# Any of these might be needed by other drivers
copy_modules_dir kernel/drivers/bus
copy_modules_dir kernel/drivers/clk
copy_modules_dir kernel/drivers/gpio
copy_modules_dir kernel/drivers/i2c/busses
copy_modules_dir kernel/drivers/i2c/muxes
copy_modules_dir kernel/drivers/mfd
copy_modules_dir kernel/drivers/phy
copy_modules_dir kernel/drivers/pinctrl
copy_modules_dir kernel/drivers/regulator
copy_modules_dir kernel/drivers/spi
copy_modules_dir kernel/drivers/usb/phy
# Needed for periodic fsck
copy_modules_dir kernel/drivers/rtc
;;
net)
copy_modules_dir kernel/drivers/net \
appletalk arcnet bonding can dummy.ko \
hamradio hippi ifb.ko irda macvlan.ko \
macvtap.ko pcmcia sb1000.ko team tokenring \
tun.ko usb veth.ko wan wimax wireless \
xen-netback.ko
;;
ide)
copy_modules_dir kernel/drivers/ide
;;
mmc)
copy_modules_dir kernel/drivers/mmc
;;
scsi)
copy_modules_dir kernel/drivers/scsi
modules="$modules mptfc mptsas mptscsih mptspi zfcp"
;;
ata)
copy_modules_dir kernel/drivers/ata
;;
block)
copy_modules_dir kernel/drivers/block
copy_modules_dir kernel/drivers/nvme
modules="$modules vmd"
;;
ubi)
modules="$modules deflate zlib lzo ubi ubifs"
;;
ieee1394)
modules="$modules ohci1394 sbp2"
;;
firewire)
modules="$modules firewire-ohci firewire-sbp2"
;;
i2o)
modules="$modules i2o_block"
;;
dasd)
modules="$modules dasd_diag_mod dasd_eckd_mod dasd_fba_mod"
;;
usb_storage)
copy_modules_dir kernel/drivers/usb/storage
;;
esac
done
# shellcheck disable=SC2086
manual_add_modules $modules
}
# 'depmod' only looks at symbol dependencies and the 'softdep' module
# information field; there is no way for modules to declare weaker
# dependencies (modules that *might* be needed at run-time) through
# module information, Until this is fixed, we need to handle those
# hidden dependencies.
hidden_dep_add_modules()
{
# shellcheck disable=SC2046
manual_add_modules $(
{
cat "${DESTDIR}/lib/modules/${version}/modules.builtin"
find "${DESTDIR}/lib/modules/${version}/kernel" -name '*.ko*'
} |
while read -r module; do
module="${module##*/}"
module="${module%%.*}"
case "$module" in
libcrc32c)
echo crc32c
;;
ubifs)
echo deflate zlib lzo
;;
btrfs)
echo crc32c
;;
mlx4_core)
echo mlx4_ib
;;
mlx5_core)
echo mlx5_ib
;;
i8042)
echo psmouse
;;
nvme)
echo vmd
;;
esac
done
)
}
# Find the source for a script file. This is needed to work around
# temporary directories mounted with the noexec option. The source
# will be on / or /usr which must be executable.
get_source()
{
if [ -z "$scriptdir" ]; then
echo "${initdir}/$1"
elif [ -f "${CONFDIR}${scriptdir}/$1" ]; then
echo "${CONFDIR}${scriptdir}/$1"
else
echo "/usr/share/initramfs-tools${scriptdir}/$1"
fi
}
set_initlist()
{
unset initlist
for si_x in "${initdir}"/*; do
# skip empty dirs without warning
[ "${si_x}" = "${initdir}/*" ] && return
# only allow variable name chars
case ${si_x#${initdir}/} in
*[![:alnum:]\._-]*)
[ "${verbose}" = "y" ] \
&& echo "$si_x ignored: not alphanumeric or '_' file" >&2
continue
;;
esac
# skip directories
if [ -d "${si_x}" ]; then
[ "${verbose}" = "y" ] \
&& echo "$si_x ignored: a directory" >&2
continue
fi
si_x="$(get_source "${si_x#${initdir}/}")"
# skip non executable scripts
if [ ! -x "${si_x}" ]; then
[ "${verbose}" = "y" ] \
&& echo "$si_x ignored: not executable" >&2
continue
fi
# skip bad syntax
if ! sh -n "${si_x}" ; then
[ "${verbose}" = "y" ] \
&& echo "$si_x ignored: bad syntax" >&2
continue
fi
initlist="${initlist:-} ${si_x##*/}"
done
}
get_prereq_pairs()
{
set_initlist
for gp_x in ${initlist:-}; do
echo "${gp_x} ${gp_x}"
gp_src="$(get_source "$gp_x")"
prereqs=$("${gp_src}" prereqs)
for prereq in ${prereqs}; do
echo "${prereq} ${gp_x}"
done
done
}
# cache boot scripts order
cache_run_scripts()
{
DESTDIR=${1}
scriptdir=${2}
initdir=${DESTDIR}${scriptdir}
[ ! -d "${initdir}" ] && return
true > "${initdir}/ORDER"
runlist=$(get_prereq_pairs | tsort)
for crs_x in ${runlist}; do
[ -f "${initdir}/${crs_x}" ] || continue
echo "${scriptdir}/${crs_x} \"\$@\"" >> "${initdir}/ORDER"
echo "[ -e /conf/param.conf ] && . /conf/param.conf" >> "${initdir}/ORDER"
done
}
call_scripts()
{
set -e
for cs_x in ${runlist}; do
[ -f "${initdir}/${cs_x}" ] || continue
# mkinitramfs verbose output
if [ "${verbose}" = "y" ]; then
echo "Calling hook ${cs_x}"
fi
"${initdir}/${cs_x}" && ec=$? || ec=$?
# allow hooks to abort build:
if [ "$ec" -ne 0 ]; then
echo "E: ${initdir}/${cs_x} failed with return $ec." >&2
# only errexit on mkinitramfs
[ -n "${version}" ] && exit $ec
fi
# allow boot scripts to modify exported boot parameters
if [ -e /conf/param.conf ]; then
. /conf/param.conf
fi
done
set +e
}
run_scripts()
{
scriptdir=${2:-}
initdir=${1}
[ ! -d "${initdir}" ] && return
runlist=$(get_prereq_pairs | tsort)
call_scripts "$scriptdir"
}
| .. | |||||
| conf-hooks.d | |||||
| conf.d | |||||
| hooks | |||||
| modules.d | |||||
| scripts | |||||
| hook-functions | |||||
| init | |||||
| modules |