Permalink
Find file Copy path
Fetching contributors…
Cannot retrieve contributors at this time
executable file 1171 lines (1037 sloc) 29.1 KB
#!/bin/sh
# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
# ex: ts=8 sw=4 sts=4 et filetype=sh
export DRACUT_SYSTEMD
export NEWROOT
debug_off() {
set +x
}
debug_on() {
[ "$RD_DEBUG" = "yes" ] && set -x
}
# returns OK if $1 contains $2
strstr() {
[ "${1#*$2*}" != "$1" ]
}
# returns OK if $1 contains $2 at the beginning
str_starts() {
[ "${1#$2*}" != "$1" ]
}
# returns OK if $1 contains $2 at the end
str_ends() {
[ "${1%*$2}" != "$1" ]
}
# replaces all occurrences of 'search' in 'str' with 'replacement'
#
# str_replace str search replacement
#
# example:
# str_replace ' one two three ' ' ' '_'
str_replace() {
local in="$1"; local s="$2"; local r="$3"
local out=''
while strstr "${in}" "$s"; do
chop="${in%%$s*}"
out="${out}${chop}$r"
in="${in#*$s}"
done
echo "${out}${in}"
}
killall_proc_mountpoint() {
local _pid
local _t
for _pid in /proc/*; do
_pid=${_pid##/proc/}
case $_pid in
*[!0-9]*) continue;;
esac
[ -e "/proc/$_pid/exe" ] || continue
[ -e "/proc/$_pid/root" ] || continue
strstr "$(ls -l -- '/proc/$_pid' '/proc/$_pid/fd' 2>/dev/null)" "$1" && kill -9 "$_pid"
done
}
_getcmdline() {
local _line
local _i
unset _line
if [ -z "$CMDLINE" ]; then
unset CMDLINE_ETC CMDLINE_ETC_D
if [ -e /etc/cmdline ]; then
while read -r _line; do
CMDLINE_ETC="$CMDLINE_ETC $_line";
done </etc/cmdline;
fi
for _i in /etc/cmdline.d/*.conf; do
[ -e "$_i" ] || continue
while read -r _line; do
CMDLINE_ETC_D="$CMDLINE_ETC_D $_line";
done <"$_i";
done
read -r CMDLINE </proc/cmdline;
CMDLINE="$CMDLINE_ETC_D $CMDLINE_ETC $CMDLINE"
fi
}
_dogetarg() {
local _o _val _doecho
unset _val
unset _o
unset _doecho
_getcmdline
for _o in $CMDLINE; do
if [ "${_o%%=*}" = "${1%%=*}" ]; then
if [ -n "${1#*=}" -a "${1#*=*}" != "${1}" ]; then
# if $1 has a "=<value>", we want the exact match
if [ "$_o" = "$1" ]; then
_val="1";
unset _doecho
fi
continue
fi
if [ "${_o#*=}" = "$_o" ]; then
# if cmdline argument has no "=<value>", we assume "=1"
_val="1";
unset _doecho
continue
fi
_val="${_o#*=}"
_doecho=1
fi
done
if [ -n "$_val" ]; then
[ "x$_doecho" != "x" ] && echo "$_val";
return 0;
fi
return 1;
}
getarg() {
debug_off
local _deprecated _newoption
while [ $# -gt 0 ]; do
case $1 in
-d) _deprecated=1; shift;;
-y) if _dogetarg $2 >/dev/null; then
if [ "$_deprecated" = "1" ]; then
[ -n "$_newoption" ] && warn "Kernel command line option '$2' is deprecated, use '$_newoption' instead." || warn "Option '$2' is deprecated."
fi
echo 1
debug_on
return 0
fi
_deprecated=0
shift 2;;
-n) if _dogetarg $2 >/dev/null; then
echo 0;
if [ "$_deprecated" = "1" ]; then
[ -n "$_newoption" ] && warn "Kernel command line option '$2' is deprecated, use '$_newoption=0' instead." || warn "Option '$2' is deprecated."
fi
debug_on
return 1
fi
_deprecated=0
shift 2;;
*) if [ -z "$_newoption" ]; then
_newoption="$1"
fi
if _dogetarg $1; then
if [ "$_deprecated" = "1" ]; then
[ -n "$_newoption" ] && warn "Kernel command line option '$1' is deprecated, use '$_newoption' instead." || warn "Option '$1' is deprecated."
fi
debug_on
return 0;
fi
_deprecated=0
shift;;
esac
done
debug_on
return 1
}
# getargbool <defaultval> <args...>
# False if "getarg <args...>" returns "0", "no", or "off".
# True if getarg returns any other non-empty string.
# If not found, assumes <defaultval> - usually 0 for false, 1 for true.
# example: getargbool 0 rd.info
# true: rd.info, rd.info=1, rd.info=xxx
# false: rd.info=0, rd.info=off, rd.info not present (default val is 0)
getargbool() {
local _b
unset _b
local _default
_default="$1"; shift
_b=$(getarg "$@")
[ $? -ne 0 -a -z "$_b" ] && _b="$_default"
if [ -n "$_b" ]; then
[ $_b = "0" ] && return 1
[ $_b = "no" ] && return 1
[ $_b = "off" ] && return 1
fi
return 0
}
isdigit() {
case "$1" in
*[!0-9]*|"") return 1;;
esac
return 0
}
# getargnum <defaultval> <minval> <maxval> <arg>
# Will echo the arg if it's in range [minval - maxval].
# If it's not set or it's not valid, will set it <defaultval>.
# Note all values are required to be >= 0 here.
# <defaultval> should be with [minval -maxval].
getargnum() {
local _b
unset _b
local _default _min _max
_default="$1"; shift
_min="$1"; shift
_max="$1"; shift
_b=$(getarg "$1")
[ $? -ne 0 -a -z "$_b" ] && _b=$_default
if [ -n "$_b" ]; then
isdigit "$_b" && _b=$(($_b)) && \
[ $_b -ge $_min ] && [ $_b -le $_max ] && echo $_b && return
fi
echo $_default
}
_dogetargs() {
debug_off
local _o _found _key
unset _o
unset _found
_getcmdline
_key="$1"
set --
for _o in $CMDLINE; do
if [ "$_o" = "$_key" ]; then
_found=1;
elif [ "${_o%%=*}" = "${_key%=}" ]; then
[ -n "${_o%%=*}" ] && set -- "$@" "${_o#*=}";
_found=1;
fi
done
if [ -n "$_found" ]; then
[ $# -gt 0 ] && echo -n "$@"
return 0
fi
return 1;
}
getargs() {
debug_off
local _val _i _args _gfound _deprecated
unset _val
unset _gfound
_newoption="$1"
_args="$@"
set --
for _i in $_args; do
if [ "$i" = "-d" ]; then
_deprecated=1
continue
fi
_val="$(_dogetargs $_i)"
if [ $? -eq 0 ]; then
if [ "$_deprecated" = "1" ]; then
[ -n "$_newoption" ] && warn "Option '$_i' is deprecated, use '$_newoption' instead." || warn "Option $_i is deprecated!"
fi
_gfound=1
fi
[ -n "$_val" ] && set -- "$@" "$_val"
_deprecated=0
done
if [ -n "$_gfound" ]; then
if [ $# -gt 0 ]; then
echo -n "$@"
else
echo -n 1
fi
debug_on
return 0
fi
debug_on
return 1;
}
# Prints value of given option. If option is a flag and it's present,
# it just returns 0. Otherwise 1 is returned.
# $1 = options separated by commas
# $2 = option we are interested in
#
# Example:
# $1 = cipher=aes-cbc-essiv:sha256,hash=sha256,verify
# $2 = hash
# Output:
# sha256
getoptcomma() {
local line=",$1,"; local opt="$2"; local tmp
case "${line}" in
*,${opt}=*,*)
tmp="${line#*,${opt}=}"
echo "${tmp%%,*}"
return 0
;;
*,${opt},*) return 0;;
esac
return 1
}
# Splits given string 'str' with separator 'sep' into variables 'var1', 'var2',
# 'varN'. If number of fields is less than number of variables, remaining are
# not set. If number of fields is greater than number of variables, the last
# variable takes remaining fields. In short - it acts similary to 'read'.
#
# splitsep sep str var1 var2 varN
#
# example:
# splitsep ':' 'foo:bar:baz' v1 v2
# in result:
# v1='foo', v2='bar:baz'
#
# TODO: ':' inside fields.
splitsep() {
debug_off
local sep="$1"; local str="$2"; shift 2
local tmp
while [ -n "$str" -a "$#" -gt 1 ]; do
tmp="${str%%$sep*}"
eval "$1='${tmp}'"
str="${str#"$tmp"}"
str="${str#$sep}"
shift
done
[ -n "$str" -a -n "$1" ] && eval "$1='$str'"
debug_on
return 0
}
setdebug() {
[ -f /etc/initrd-release ] || return
if [ -z "$RD_DEBUG" ]; then
if [ -e /proc/cmdline ]; then
RD_DEBUG=no
if getargbool 0 rd.debug -d -y rdinitdebug -d -y rdnetdebug; then
RD_DEBUG=yes
[ -n "$BASH" ] && \
export PS4='${BASH_SOURCE}@${LINENO}(${FUNCNAME[0]}): ';
fi
fi
export RD_DEBUG
fi
debug_on
}
setdebug
source_all() {
local f
local _dir
_dir=$1; shift
[ "$_dir" ] && [ -d "/$_dir" ] || return
for f in "/$_dir"/*.sh; do [ -e "$f" ] && . "$f" "$@"; done
}
hookdir=/lib/dracut/hooks
export hookdir
source_hook() {
local _dir
_dir=$1; shift
source_all "/lib/dracut/hooks/$_dir" "$@"
}
check_finished() {
local f
for f in $hookdir/initqueue/finished/*.sh; do
[ "$f" = "$hookdir/initqueue/finished/*.sh" ] && return 0
{ [ -e "$f" ] && ( . "$f" ) ; } || return 1
done
return 0
}
source_conf() {
local f
[ "$1" ] && [ -d "/$1" ] || return
for f in "/$1"/*.conf; do [ -e "$f" ] && . "$f"; done
}
die() {
{
echo "<24>dracut: FATAL: $*";
echo "<24>dracut: Refusing to continue";
} > /dev/kmsg
{
echo "warn dracut: FATAL: \"$*\"";
echo "warn dracut: Refusing to continue";
} >> $hookdir/emergency/01-die.sh
[ -d /run/initramfs ] || mkdir -p -- /run/initramfs
> /run/initramfs/.die
emergency_shell
exit 1
}
check_quiet() {
if [ -z "$DRACUT_QUIET" ]; then
DRACUT_QUIET="yes"
getargbool 0 rd.info -d -y rdinfo && DRACUT_QUIET="no"
getargbool 0 rd.debug -d -y rdinitdebug && DRACUT_QUIET="no"
getarg quiet || DRACUT_QUIET="yes"
a=$(getarg loglevel=)
[ -n "$a" ] && [ $a -ge 28 ] && DRACUT_QUIET="yes"
export DRACUT_QUIET
fi
}
if [ -z "$DRACUT_SYSTEMD" ]; then
warn() {
check_quiet
echo "<28>dracut Warning: $*" > /dev/kmsg
echo "dracut Warning: $*" >&2
}
info() {
check_quiet
echo "<30>dracut: $*" > /dev/kmsg
[ "$DRACUT_QUIET" != "yes" ] && \
echo "dracut: $*"
}
else
warn() {
echo "Warning: $*" >&2
}
info() {
echo "$*"
}
fi
vwarn() {
while read line; do
warn $line;
done
}
vinfo() {
while read line; do
info $line;
done
}
check_occurances() {
# Count the number of times the character $ch occurs in $str
# Return 0 if the count matches the expected number, 1 otherwise
local str="$1"
local ch="$2"
local expected="$3"
local count=0
while [ "${str#*$ch}" != "${str}" ]; do
str="${str#*$ch}"
count=$(( $count + 1 ))
done
[ $count -eq $expected ]
}
incol2() {
debug_off
local dummy check;
local file="$1";
local str="$2";
[ -z "$file" ] && return 1;
[ -z "$str" ] && return 1;
while read dummy check restofline; do
if [ "$check" = "$str" ]; then
debug_on
return 0
fi
done < $file
debug_on
return 1
}
udevsettle() {
[ -z "$UDEVVERSION" ] && export UDEVVERSION=$(udevadm --version)
if [ $UDEVVERSION -ge 143 ]; then
udevadm settle --exit-if-exists=$hookdir/initqueue/work $settle_exit_if_exists
else
udevadm settle --timeout=30
fi
}
udevproperty() {
[ -z "$UDEVVERSION" ] && export UDEVVERSION=$(udevadm --version)
if [ $UDEVVERSION -ge 143 ]; then
for i in "$@"; do udevadm control --property=$i; done
else
for i in "$@"; do udevadm control --env=$i; done
fi
}
find_mount() {
local dev mnt etc wanted_dev
wanted_dev="$(readlink -e -q $1)"
while read dev mnt etc; do
[ "$dev" = "$wanted_dev" ] && echo "$dev" && return 0
done < /proc/mounts
return 1
}
# usage: ismounted <mountpoint>
# usage: ismounted /dev/<device>
if command -v findmnt >/dev/null; then
ismounted() {
findmnt "$1" > /dev/null 2>&1
}
else
ismounted() {
if [ -b "$1" ]; then
find_mount "$1" > /dev/null && return 0
return 1
fi
while read a m a; do
[ "$m" = "$1" ] && return 0
done < /proc/mounts
return 1
}
fi
# root=nfs:[<server-ip>:]<root-dir>[:<nfs-options>]
# root=nfs4:[<server-ip>:]<root-dir>[:<nfs-options>]
nfsroot_to_var() {
# strip nfs[4]:
local arg="$@:"
nfs="${arg%%:*}"
arg="${arg##$nfs:}"
# check if we have a server
if strstr "$arg" ':/*' ; then
server="${arg%%:/*}"
arg="/${arg##*:/}"
fi
path="${arg%%:*}"
# rest are options
options="${arg##$path}"
# strip leading ":"
options="${options##:}"
# strip ":"
options="${options%%:}"
# Does it really start with '/'?
[ -n "${path%%/*}" ] && path="error";
#Fix kernel legacy style separating path and options with ','
if [ "$path" != "${path#*,}" ] ; then
options=${path#*,}
path=${path%%,*}
fi
}
# Create udev rule match for a device with its device name, or the udev property
# ID_FS_UUID or ID_FS_LABEL
#
# example:
# udevmatch LABEL=boot
# prints:
# ENV{ID_FS_LABEL}="boot"
#
# TOOD: symlinks
udevmatch() {
case "$1" in
UUID=????????-????-????-????-????????????|LABEL=*|PARTLABEL=*|PARTUUID=????????-????-????-????-????????????)
printf 'ENV{ID_FS_%s}=="%s"' "${1%%=*}" "${1#*=}"
;;
UUID=*)
printf 'ENV{ID_FS_UUID}=="%s*"' "${1#*=}"
;;
PARTUUID=*)
printf 'ENV{ID_FS_PARTUUID}=="%s*"' "${1#*=}"
;;
/dev/?*) printf -- 'KERNEL=="%s"' "${1#/dev/}" ;;
*) return 255 ;;
esac
}
# Prints unique path for potential file inside specified directory. It consists
# of specified directory, prefix and number at the end which is incremented
# until non-existing file is found.
#
# funiq dir prefix
#
# example:
# # ls /mnt
# cdrom0 cdrom1
#
# # funiq /mnt cdrom
# /mnt/cdrom2
funiq() {
local dir="$1"; local prefix="$2"
local i=0
[ -d "${dir}" ] || return 1
while [ -e "${dir}/${prefix}$i" ]; do
i=$(($i+1)) || return 1
done
echo "${dir}/${prefix}$i"
}
# Creates unique directory and prints its path. It's using funiq to generate
# path.
#
# mkuniqdir subdir new_dir_name
mkuniqdir() {
local dir="$1"; local prefix="$2"
local retdir; local retdir_new
[ -d "${dir}" ] || mkdir -m 0755 -p "${dir}" || return 1
retdir=$(funiq "${dir}" "${prefix}") || return 1
until mkdir -m 0755 "${retdir}" 2>/dev/null; do
retdir_new=$(funiq "${dir}" "${prefix}") || return 1
[ "$retdir_new" = "$retdir" ] && return 1
retdir="$retdir_new"
done
echo "${retdir}"
}
# Copy the contents of SRC into DEST, merging the contents of existing
# directories (kinda like rsync, or cpio -p).
# Creates DEST if it doesn't exist. Overwrites files with the same names.
#
# copytree SRC DEST
copytree() {
local src="$1" dest="$2"
mkdir -p "$dest"; dest=$(readlink -e -q "$dest")
( cd "$src"; cp -af . -t "$dest" )
}
# Evaluates command for UUIDs either given as arguments for this function or all
# listed in /dev/disk/by-uuid. UUIDs doesn't have to be fully specified. If
# beginning is given it is expanded to all matching UUIDs. To pass full UUID to
# your command use '$___' as a place holder. Remember to escape '$'!
#
# foreach_uuid_until [ -p prefix ] command UUIDs
#
# prefix - string to put just before $___
# command - command to be evaluated
# UUIDs - list of UUIDs separated by space
#
# The function returns after *first successful evaluation* of the given command
# with status 0. If evaluation fails for every UUID function returns with
# status 1.
#
# Example:
# foreach_uuid_until "mount -U \$___ /mnt; echo OK; umount /mnt" \
# "01234 f512 a235567f-12a3-c123-a1b1-01234567abcb"
foreach_uuid_until() (
cd /dev/disk/by-uuid
[ "$1" = -p ] && local prefix="$2" && shift 2
local cmd="$1"; shift; local uuids_list="$*"
local uuid; local full_uuid; local ___
[ -n "${cmd}" ] || return 1
for uuid in ${uuids_list:-*}; do
for full_uuid in ${uuid}*; do
[ -e "${full_uuid}" ] || continue
___="${prefix}${full_uuid}"
eval ${cmd} && return 0
done
done
return 1
)
# Get kernel name for given device. Device may be the name too (then the same
# is returned), a symlink (full path), UUID (prefixed with "UUID=") or label
# (prefixed with "LABEL="). If just a beginning of the UUID is specified or
# even an empty, function prints all device names which UUIDs match - every in
# single line.
#
# NOTICE: The name starts with "/dev/".
#
# Example:
# devnames UUID=123
# May print:
# /dev/dm-1
# /dev/sdb1
# /dev/sdf3
devnames() {
local dev="$1"; local d; local names
case "$dev" in
UUID=*)
dev="$(foreach_uuid_until '! blkid -U $___' "${dev#UUID=}")" \
&& return 255
[ -z "$dev" ] && return 255
;;
LABEL=*) dev="$(blkid -L "${dev#LABEL=}")" || return 255 ;;
/dev/?*) ;;
*) return 255 ;;
esac
for d in $dev; do
names="$names
$(readlink -e -q "$d")" || return 255
done
echo "${names#
}"
}
usable_root() {
local _d
[ -d $1 ] || return 1
for _d in proc sys dev; do
[ -e "$1"/$_d ] || return 1
done
return 0
}
inst_hook() {
local _hookname _unique _name _job _exe
while [ $# -gt 0 ]; do
case "$1" in
--hook)
_hookname="/$2";shift;;
--unique)
_unique="yes";;
--name)
_name="$2";shift;;
*)
break;;
esac
shift
done
if [ -z "$_unique" ]; then
_job="${_name}$$"
else
_job="${_name:-$1}"
_job=${_job##*/}
fi
_exe=$1
shift
[ -x "$_exe" ] || _exe=$(command -v $_exe)
if [ -n "$onetime" ]; then
{
echo '[ -e "$_job" ] && rm -f -- "$_job"'
echo "$_exe $@"
} > "/tmp/$$-${_job}.sh"
else
echo "$_exe $@" > "/tmp/$$-${_job}.sh"
fi
mv -f "/tmp/$$-${_job}.sh" "$hookdir/${_hookname}/${_job}.sh"
}
# inst_mount_hook <mountpoint> <prio> <name> <script>
#
# Install a mount hook with priority <prio>,
# which executes <script> as soon as <mountpoint> is mounted.
inst_mount_hook() {
local _prio="$2" _jobname="$3" _script="$4"
local _hookname="mount-$(str_replace "$1" '/' '\\x2f')"
[ -d "$hookdir/${_hookname}" ] || mkdir -p "$hookdir/${_hookname}"
inst_hook --hook "$_hookname" --unique --name "${_prio}-${_jobname}" "$_script"
}
# add_mount_point <dev> <mountpoint> <filesystem> <fsopts>
#
# Mount <dev> on <mountpoint> with <filesystem> and <fsopts>
# and call any mount hooks, as soon, as it is mounted
add_mount_point() {
local _dev="$1" _mp="$2" _fs="$3" _fsopts="$4"
local _hookname="mount-$(str_replace "$2" '/' '\\x2f')"
local _devname="dev-$(str_replace "$1" '/' '\\x2f')"
echo "$_dev $_mp $_fs $_fsopts 0 0" >> /etc/fstab
exec 7>/etc/udev/rules.d/99-mount-${_devname}.rules
echo 'SUBSYSTEM!="block", GOTO="mount_end"' >&7
echo 'ACTION!="add|change", GOTO="mount_end"' >&7
if [ -n "$_dev" ]; then
udevmatch "$_dev" >&7 || {
warn "add_mount_point dev=$_dev incorrect!"
continue
}
printf ', ' >&7
fi
{
printf -- 'RUN+="%s --unique --onetime ' $(command -v initqueue)
printf -- '--name mount-%%k '
printf -- '%s %s"\n' "$(command -v mount_hook)" "${_mp}"
} >&7
echo 'LABEL="mount_end"' >&7
exec 7>&-
}
# wait_for_mount <mountpoint>
#
# Installs a initqueue-finished script,
# which will cause the main loop only to exit,
# if <mountpoint> is mounted.
wait_for_mount()
{
local _name
_name="$(str_replace "$1" '/' '\\x2f')"
printf '. /lib/dracut-lib.sh\nismounted "%s"\n' $1 \
>> "$hookdir/initqueue/finished/ismounted-${_name}.sh"
{
printf 'ismounted "%s" || ' $1
printf 'warn "\"%s\" is not mounted"\n' $1
} >> "$hookdir/emergency/90-${_name}.sh"
}
dev_unit_name()
{
_name="${1%%/}"
_name="${_name##/}"
_name="$(str_replace "$_name" '-' '\x2d')"
_name="$(str_replace "$_name" '/' '-')"
echo "$_name"
}
# wait_for_dev <dev>
#
# Installs a initqueue-finished script,
# which will cause the main loop only to exit,
# if the device <dev> is recognized by the system.
wait_for_dev()
{
local _name
_name="$(str_replace "$1" '/' '\x2f')"
printf '[ -e "%s" ]\n' $1 \
>> "${PREFIX}$hookdir/initqueue/finished/devexists-${_name}.sh"
{
printf '[ -e "%s" ] || ' $1
printf 'warn "\"%s\" does not exist"\n' $1
} >> "${PREFIX}$hookdir/emergency/80-${_name}.sh"
if [ -n "$DRACUT_SYSTEMD" ]; then
_name=$(dev_unit_name "$1")
if ! [ -L ${PREFIX}/etc/systemd/system/initrd.target.requires/${_name}.device ]; then
[ -d ${PREFIX}/etc/systemd/system/initrd.target.requires ] || mkdir -p ${PREFIX}/etc/systemd/system/initrd.target.requires
ln -s ../${_name}.device ${PREFIX}/etc/systemd/system/initrd.target.requires/${_name}.device
fi
mkdir -p ${PREFIX}/etc/systemd/system/${_name}.device.d
{
echo "[Unit]"
echo "JobTimeoutSec=3600"
} > ${PREFIX}/etc/systemd/system/${_name}.device.d/timeout.conf
[ -z "$PREFIX" ] && /sbin/initqueue --onetime --unique --name daemon-reload systemctl daemon-reload
fi
}
cancel_wait_for_dev()
{
local _name
_name="$(str_replace "$1" '/' '\\x2f')"
rm -f -- "$hookdir/initqueue/finished/devexists-${_name}.sh"
rm -f -- "$hookdir/emergency/80-${_name}.sh"
if [ -n "$DRACUT_SYSTEMD" ]; then
_name=$(dev_unit_name "$1")
rm -f -- ${PREFIX}/etc/systemd/system/initrd.target.requires/${_name}.device
rm -f -- ${PREFIX}/etc/systemd/system/${_name}.device.d/timeout.conf
/sbin/initqueue --onetime --unique --name daemon-reload systemctl daemon-reload
fi
}
killproc() {
debug_off
local _exe="$(command -v $1)"
local _sig=$2
local _i
[ -x "$_exe" ] || return 1
for _i in /proc/[0-9]*; do
[ "$_i" = "/proc/1" ] && continue
if [ -e "$_i"/_exe ] && [ "$_i/_exe" -ef "$_exe" ] ; then
kill $_sig ${_i##*/}
fi
done
debug_on
}
need_shutdown() {
>/run/initramfs/.need_shutdown
}
wait_for_loginit()
{
[ "$RD_DEBUG" = "yes" ] || return
[ -e /run/initramfs/loginit.pipe ] || return
debug_off
echo "DRACUT_LOG_END"
exec 0<>/dev/console 1<>/dev/console 2<>/dev/console
# wait for loginit
i=0
while [ $i -lt 10 ]; do
if [ ! -e /run/initramfs/loginit.pipe ]; then
j=$(jobs)
[ -z "$j" ] && break
[ -z "${j##*Running*}" ] || break
fi
sleep 0.1
i=$(($i+1))
done
if [ $i -eq 10 ]; then
kill %1 >/dev/null 2>&1
kill $(while read line;do echo $line;done</run/initramfs/loginit.pid)
fi
setdebug
rm -f -- /run/initramfs/loginit.pipe /run/initramfs/loginit.pid
}
_emergency_shell()
{
local _name="$1"
if [ -n "$DRACUT_SYSTEMD" ]; then
> /.console_lock
echo "PS1=\"$_name:\\\${PWD}# \"" >/etc/profile
systemctl start dracut-emergency.service
rm -f -- /etc/profile
rm -f -- /.console_lock
else
debug_off
echo
/sbin/sosreport
echo 'You might want to save "/run/initramfs/sosreport.txt" to a USB stick or /boot'
echo 'after mounting them and attach it to a bug report.'
if ! RD_DEBUG= getargbool 0 rd.debug -d -y rdinitdebug -d -y rdnetdebug; then
echo
echo 'To get more debug information in the report,'
echo 'reboot with "rd.debug" added to the kernel command line.'
fi
echo
echo 'Dropping to debug shell.'
echo
export PS1="$_name:\${PWD}# "
[ -e /.profile ] || >/.profile
_ctty="$(RD_DEBUG= getarg rd.ctty=)" && _ctty="/dev/${_ctty##*/}"
if [ -z "$_ctty" ]; then
_ctty=console
while [ -f /sys/class/tty/$_ctty/active ]; do
_ctty=$(cat /sys/class/tty/$_ctty/active)
_ctty=${_ctty##* } # last one in the list
done
_ctty=/dev/$_ctty
fi
[ -c "$_ctty" ] || _ctty=/dev/tty1
case "$(/usr/bin/setsid --help 2>&1)" in *--ctty*) CTTY="--ctty";; esac
setsid $CTTY /bin/sh -i -l 0<>$_ctty 1<>$_ctty 2<>$_ctty
fi
}
emergency_shell()
{
local _ctty
set +e
local _rdshell_name="dracut" action="Boot" hook="emergency"
if [ "$1" = "-n" ]; then
_rdshell_name=$2
shift 2
elif [ "$1" = "--shutdown" ]; then
_rdshell_name=$2; action="Shutdown"; hook="shutdown-emergency"
if type plymouth >/dev/null 2>&1; then
plymouth --hide-splash
elif [ -x /oldroot/bin/plymouth ]; then
/oldroot/bin/plymouth --hide-splash
fi
shift 2
fi
echo ; echo
warn "$*"
source_hook "$hook"
echo
if getargbool 1 rd.shell -d -y rdshell || getarg rd.break -d rdbreak; then
_emergency_shell $_rdshell_name
else
warn "$action has failed. To debug this issue add \"rd.shell rd.debug\" to the kernel command line."
# cause a kernel panic
exit 1
fi
[ -e /run/initramfs/.die ] && exit 1
}
action_on_fail()
{
local _action=$(getarg rd.action_on_fail= -d action_on_fail=)
case "$_action" in
continue)
[ "$1" = "-n" ] && shift 2
[ "$1" = "--shutdown" ] && shift 2
warn "$*"
warn "Not dropping to emergency shell, because 'action_on_fail=continue' was set on the kernel command line."
return 0
;;
shell)
emergency_shell $@
return 1
;;
*)
emergency_shell $@
return 1
;;
esac
}
# Retain the values of these variables but ensure that they are unexported
# This is a POSIX-compliant equivalent of bash's "export -n"
export_n()
{
local var
local val
for var in "$@"; do
eval val=\$$var
unset $var
[ -n "$val" ] && eval $var=\"$val\"
done
}
# returns OK if list1 contains all elements of list2, i.e. checks if list2 is a
# sublist of list1. An order and a duplication doesn't matter.
#
# $1 = separator
# $2 = list1
# $3 = list2
# $4 = ignore values, separated by $1
listlist() {
local _sep="$1"
local _list="${_sep}${2}${_sep}"
local _sublist="$3"
[ -n "$4" ] && local _iglist="${_sep}${4}${_sep}"
local IFS="$_sep"
local _v
[ "$_list" = "$_sublist" ] && return 0
for _v in $_sublist; do
if [ -n "$_v" ] && ! ( [ -n "$_iglist" ] && strstr "$_iglist" "$_v" )
then
strstr "$_list" "$_v" || return 1
fi
done
return 0
}
# returns OK if both lists contain the same values. An order and a duplication
# doesn't matter.
#
# $1 = separator
# $2 = list1
# $3 = list2
# $4 = ignore values, separated by $1
are_lists_eq() {
listlist "$1" "$2" "$3" "$4" && listlist "$1" "$3" "$2" "$4"
}
setmemdebug() {
if [ -z "$DEBUG_MEM_LEVEL" ]; then
export DEBUG_MEM_LEVEL=$(getargnum 0 0 3 rd.memdebug)
fi
}
setmemdebug
# parameters: msg [trace_level:trace]...
make_trace_mem()
{
local msg
msg="$1"
shift
if [ -n "$DEBUG_MEM_LEVEL" ] && [ "$DEBUG_MEM_LEVEL" -gt 0 ]; then
make_trace show_memstats $DEBUG_MEM_LEVEL "[debug_mem]" "$msg" "$@" >&2
fi
}
# parameters: func log_level prefix msg [trace_level:trace]...
make_trace()
{
local func log_level prefix msg msg_printed
local trace trace_level trace_in_higher_levels insert_trace
func=$1
shift
log_level=$1
shift
prefix=$1
shift
msg=$1
shift
if [ -z "$log_level" ]; then
return
fi
msg=$(echo $msg)
msg_printed=0
while [ $# -gt 0 ]; do
trace=${1%%:*}
trace_level=${trace%%+}
[ "$trace" != "$trace_level" ] && trace_in_higher_levels="yes"
trace=${1##*:}
if [ -z "$trace_level" ]; then
trace_level=0
fi
insert_trace=0
if [ -n "$trace_in_higher_levels" ]; then
if [ "$log_level" -ge "$trace_level" ]; then
insert_trace=1
fi
else
if [ "$log_level" -eq "$trace_level" ]; then
insert_trace=1
fi
fi
if [ $insert_trace -eq 1 ]; then
if [ $msg_printed -eq 0 ]; then
echo "$prefix $msg"
msg_printed=1
fi
$func $trace
fi
shift
done
}
# parameters: type
show_memstats()
{
case $1 in
shortmem)
cat /proc/meminfo | grep -e "^MemFree" -e "^Cached" -e "^Slab"
;;
mem)
cat /proc/meminfo
;;
slab)
cat /proc/slabinfo
;;
iomem)
cat /proc/iomem
;;
esac
}