327 lines
6.2 KiB
Bash
Executable File
327 lines
6.2 KiB
Bash
Executable File
#!/bin/sh
|
|
|
|
# Default PATH differs between shells, and is not automatically exported
|
|
# by klibc dash. Make it consistent.
|
|
export PATH=/sbin:/usr/sbin:/bin:/usr/bin
|
|
|
|
[ -d /dev ] || mkdir -m 0755 /dev
|
|
[ -d /root ] || mkdir -m 0700 /root
|
|
[ -d /sys ] || mkdir /sys
|
|
[ -d /proc ] || mkdir /proc
|
|
[ -d /tmp ] || mkdir /tmp
|
|
mkdir -p /var/lock
|
|
mount -t sysfs -o nodev,noexec,nosuid sysfs /sys
|
|
mount -t proc -o nodev,noexec,nosuid proc /proc
|
|
|
|
# shellcheck disable=SC2013
|
|
for x in $(cat /proc/cmdline); do
|
|
case $x in
|
|
initramfs.clear)
|
|
clear
|
|
;;
|
|
quiet)
|
|
quiet=y
|
|
;;
|
|
esac
|
|
done
|
|
|
|
if [ "$quiet" != "y" ]; then
|
|
quiet=n
|
|
echo "Loading, please wait..."
|
|
fi
|
|
export quiet
|
|
|
|
# Note that this only becomes /dev on the real filesystem if udev's scripts
|
|
# are used; which they will be, but it's worth pointing out
|
|
mount -t devtmpfs -o nosuid,mode=0755 udev /dev
|
|
mkdir /dev/pts
|
|
mount -t devpts -o noexec,nosuid,gid=5,mode=0620 devpts /dev/pts || true
|
|
|
|
# Export the dpkg architecture
|
|
export DPKG_ARCH=
|
|
. /conf/arch.conf
|
|
|
|
# Set modprobe env
|
|
export MODPROBE_OPTIONS="-qb"
|
|
|
|
# Export relevant variables
|
|
export ROOT=
|
|
export ROOTDELAY=
|
|
export ROOTFLAGS=
|
|
export ROOTFSTYPE=
|
|
export IP=
|
|
export DEVICE=
|
|
export BOOT=
|
|
export BOOTIF=
|
|
export UBIMTD=
|
|
export break=
|
|
export init=/sbin/init
|
|
export readonly=y
|
|
export rootmnt=/root
|
|
export debug=
|
|
export panic=
|
|
export blacklist=
|
|
export resume=
|
|
export resume_offset=
|
|
export noresume=
|
|
export drop_caps=
|
|
export fastboot=n
|
|
export forcefsck=n
|
|
export fsckfix=
|
|
|
|
|
|
# Bring in the main config
|
|
. /conf/initramfs.conf
|
|
for conf in conf/conf.d/*; do
|
|
[ -f "${conf}" ] && . "${conf}"
|
|
done
|
|
. /scripts/functions
|
|
|
|
# Parse command line options
|
|
# shellcheck disable=SC2013
|
|
for x in $(cat /proc/cmdline); do
|
|
case $x in
|
|
init=*)
|
|
init=${x#init=}
|
|
;;
|
|
root=*)
|
|
ROOT=${x#root=}
|
|
if [ -z "${BOOT}" ] && [ "$ROOT" = "/dev/nfs" ]; then
|
|
BOOT=nfs
|
|
fi
|
|
;;
|
|
rootflags=*)
|
|
ROOTFLAGS="-o ${x#rootflags=}"
|
|
;;
|
|
rootfstype=*)
|
|
ROOTFSTYPE="${x#rootfstype=}"
|
|
;;
|
|
rootdelay=*)
|
|
ROOTDELAY="${x#rootdelay=}"
|
|
case ${ROOTDELAY} in
|
|
*[![:digit:].]*)
|
|
ROOTDELAY=
|
|
;;
|
|
esac
|
|
;;
|
|
nfsroot=*)
|
|
# shellcheck disable=SC2034
|
|
NFSROOT="${x#nfsroot=}"
|
|
;;
|
|
initramfs.runsize=*)
|
|
RUNSIZE="${x#initramfs.runsize=}"
|
|
;;
|
|
ip=*)
|
|
IP="${x#ip=}"
|
|
;;
|
|
boot=*)
|
|
BOOT=${x#boot=}
|
|
;;
|
|
ubi.mtd=*)
|
|
UBIMTD=${x#ubi.mtd=}
|
|
;;
|
|
resume=*)
|
|
RESUME="${x#resume=}"
|
|
;;
|
|
resume_offset=*)
|
|
resume_offset="${x#resume_offset=}"
|
|
;;
|
|
noresume)
|
|
noresume=y
|
|
;;
|
|
drop_capabilities=*)
|
|
drop_caps="-d ${x#drop_capabilities=}"
|
|
;;
|
|
panic=*)
|
|
panic="${x#panic=}"
|
|
;;
|
|
ro)
|
|
readonly=y
|
|
;;
|
|
rw)
|
|
readonly=n
|
|
;;
|
|
debug)
|
|
debug=y
|
|
quiet=n
|
|
if [ -n "${netconsole}" ]; then
|
|
log_output=/dev/kmsg
|
|
else
|
|
log_output=/run/initramfs/initramfs.debug
|
|
fi
|
|
set -x
|
|
;;
|
|
debug=*)
|
|
debug=y
|
|
quiet=n
|
|
set -x
|
|
;;
|
|
break=*)
|
|
break=${x#break=}
|
|
;;
|
|
break)
|
|
break=premount
|
|
;;
|
|
blacklist=*)
|
|
blacklist=${x#blacklist=}
|
|
;;
|
|
netconsole=*)
|
|
netconsole=${x#netconsole=}
|
|
[ "x$debug" = "xy" ] && log_output=/dev/kmsg
|
|
;;
|
|
BOOTIF=*)
|
|
BOOTIF=${x#BOOTIF=}
|
|
;;
|
|
fastboot|fsck.mode=skip)
|
|
fastboot=y
|
|
;;
|
|
forcefsck|fsck.mode=force)
|
|
forcefsck=y
|
|
;;
|
|
fsckfix|fsck.repair=yes)
|
|
fsckfix=y
|
|
;;
|
|
fsck.repair=no)
|
|
fsckfix=n
|
|
;;
|
|
esac
|
|
done
|
|
|
|
# Default to BOOT=local if no boot script defined.
|
|
if [ -z "${BOOT}" ]; then
|
|
BOOT=local
|
|
fi
|
|
|
|
if [ -n "${noresume}" ] || [ "$RESUME" = none ]; then
|
|
noresume=y
|
|
else
|
|
resume=${RESUME:-}
|
|
fi
|
|
|
|
mount -t tmpfs -o "nodev,noexec,nosuid,size=${RUNSIZE:-10%},mode=0755" tmpfs /run
|
|
mkdir -m 0700 /run/initramfs
|
|
|
|
if [ -n "$log_output" ]; then
|
|
exec >$log_output 2>&1
|
|
unset log_output
|
|
fi
|
|
|
|
maybe_break top
|
|
|
|
# Don't do log messages here to avoid confusing graphical boots
|
|
run_scripts /scripts/init-top
|
|
|
|
maybe_break modules
|
|
[ "$quiet" != "y" ] && log_begin_msg "Loading essential drivers"
|
|
[ -n "${netconsole}" ] && modprobe netconsole netconsole="${netconsole}"
|
|
load_modules
|
|
[ "$quiet" != "y" ] && log_end_msg
|
|
|
|
starttime="$(_uptime)"
|
|
starttime=$((starttime + 1)) # round up
|
|
export starttime
|
|
|
|
if [ "$ROOTDELAY" ]; then
|
|
sleep "$ROOTDELAY"
|
|
fi
|
|
|
|
maybe_break premount
|
|
[ "$quiet" != "y" ] && log_begin_msg "Running /scripts/init-premount"
|
|
run_scripts /scripts/init-premount
|
|
[ "$quiet" != "y" ] && log_end_msg
|
|
|
|
maybe_break mount
|
|
log_begin_msg "Mounting root file system"
|
|
# Always load local and nfs (since these might be needed for /etc or
|
|
# /usr, irrespective of the boot script used to mount the rootfs).
|
|
. /scripts/local
|
|
. /scripts/nfs
|
|
. /scripts/${BOOT}
|
|
parse_numeric "${ROOT}"
|
|
maybe_break mountroot
|
|
mount_top
|
|
mount_premount
|
|
mountroot
|
|
log_end_msg
|
|
|
|
if read_fstab_entry /usr; then
|
|
log_begin_msg "Mounting /usr file system"
|
|
mountfs /usr
|
|
log_end_msg
|
|
fi
|
|
|
|
# Mount cleanup
|
|
mount_bottom
|
|
nfs_bottom
|
|
local_bottom
|
|
|
|
maybe_break bottom
|
|
[ "$quiet" != "y" ] && log_begin_msg "Running /scripts/init-bottom"
|
|
# We expect udev's init-bottom script to move /dev to ${rootmnt}/dev
|
|
run_scripts /scripts/init-bottom
|
|
[ "$quiet" != "y" ] && log_end_msg
|
|
|
|
# Move /run to the root
|
|
mount -n -o move /run ${rootmnt}/run
|
|
|
|
validate_init() {
|
|
run-init -n "${rootmnt}" "${1}"
|
|
}
|
|
|
|
# Check init is really there
|
|
if ! validate_init "$init"; then
|
|
echo "Target filesystem doesn't have requested ${init}."
|
|
init=
|
|
for inittest in /sbin/init /etc/init /bin/init /bin/sh; do
|
|
if validate_init "${inittest}"; then
|
|
init="$inittest"
|
|
break
|
|
fi
|
|
done
|
|
fi
|
|
|
|
# No init on rootmount
|
|
if ! validate_init "${init}" ; then
|
|
panic "No init found. Try passing init= bootarg."
|
|
fi
|
|
|
|
maybe_break init
|
|
|
|
# don't leak too much of env - some init(8) don't clear it
|
|
# (keep init, rootmnt, drop_caps)
|
|
unset debug
|
|
unset MODPROBE_OPTIONS
|
|
unset DPKG_ARCH
|
|
unset ROOTFLAGS
|
|
unset ROOTFSTYPE
|
|
unset ROOTDELAY
|
|
unset ROOT
|
|
unset IP
|
|
unset BOOT
|
|
unset BOOTIF
|
|
unset DEVICE
|
|
unset UBIMTD
|
|
unset blacklist
|
|
unset break
|
|
unset noresume
|
|
unset panic
|
|
unset quiet
|
|
unset readonly
|
|
unset resume
|
|
unset resume_offset
|
|
unset noresume
|
|
unset fastboot
|
|
unset forcefsck
|
|
unset fsckfix
|
|
unset starttime
|
|
|
|
# Move virtual filesystems over to the real filesystem
|
|
mount -n -o move /sys ${rootmnt}/sys
|
|
mount -n -o move /proc ${rootmnt}/proc
|
|
|
|
# Chain to real filesystem
|
|
# shellcheck disable=SC2086,SC2094
|
|
exec run-init ${drop_caps} "${rootmnt}" "${init}" "$@" <"${rootmnt}/dev/console" >"${rootmnt}/dev/console" 2>&1
|
|
echo "Something went badly wrong in the initramfs."
|
|
panic "Please file a bug on initramfs-tools."
|