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proc
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thread-self
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root
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proc
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self
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root
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usr
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lib
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dracut
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modules.d
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99base
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files >> //proc/thread-self/root/proc/self/root/usr/lib/dracut/modules.d/99base/init.sh
#!/bin/sh # # Licensed under the GPLv2 # # Copyright 2008-2010, Red Hat, Inc. # Harald Hoyer <harald@redhat.com> # Jeremy Katz <katzj@redhat.com> export -p > /tmp/export.orig NEWROOT="/sysroot" [ -d $NEWROOT ] || mkdir -p -m 0755 $NEWROOT OLDPATH=$PATH PATH=/usr/sbin:/usr/bin:/sbin:/bin export PATH # mount some important things [ ! -d /proc/self ] && \ mount -t proc -o nosuid,noexec,nodev proc /proc >/dev/null if [ "$?" != "0" ]; then echo "Cannot mount proc on /proc! Compile the kernel with CONFIG_PROC_FS!" exit 1 fi [ ! -d /sys/kernel ] && \ mount -t sysfs -o nosuid,noexec,nodev sysfs /sys >/dev/null if [ "$?" != "0" ]; then echo "Cannot mount sysfs on /sys! Compile the kernel with CONFIG_SYSFS!" exit 1 fi RD_DEBUG="" . /lib/dracut-lib.sh setdebug if ! ismounted /dev; then mount -t devtmpfs -o mode=0755,noexec,nosuid,strictatime devtmpfs /dev >/dev/null fi if ! ismounted /dev; then echo "Cannot mount devtmpfs on /dev! Compile the kernel with CONFIG_DEVTMPFS!" exit 1 fi # prepare the /dev directory [ ! -h /dev/fd ] && ln -s /proc/self/fd /dev/fd >/dev/null 2>&1 [ ! -h /dev/stdin ] && ln -s /proc/self/fd/0 /dev/stdin >/dev/null 2>&1 [ ! -h /dev/stdout ] && ln -s /proc/self/fd/1 /dev/stdout >/dev/null 2>&1 [ ! -h /dev/stderr ] && ln -s /proc/self/fd/2 /dev/stderr >/dev/null 2>&1 if ! ismounted /dev/pts; then mkdir -m 0755 /dev/pts mount -t devpts -o gid=5,mode=620,noexec,nosuid devpts /dev/pts >/dev/null fi if ! ismounted /dev/shm; then mkdir -m 0755 /dev/shm mount -t tmpfs -o mode=1777,noexec,nosuid,nodev,strictatime tmpfs /dev/shm >/dev/null fi if ! ismounted /run; then mkdir -m 0755 /newrun if ! str_starts "$(readlink -f /bin/sh)" "/run/"; then mount -t tmpfs -o mode=0755,noexec,nosuid,nodev,strictatime tmpfs /newrun >/dev/null else # the initramfs binaries are located in /run, so don't mount it with noexec mount -t tmpfs -o mode=0755,nosuid,nodev,strictatime tmpfs /newrun >/dev/null fi cp -a /run/* /newrun >/dev/null 2>&1 mount --move /newrun /run rm -fr -- /newrun fi if command -v kmod >/dev/null 2>/dev/null; then kmod static-nodes --format=tmpfiles 2>/dev/null | \ while read type file mode a a a majmin || [ -n "$type" ]; do type=${type%\!} case $type in d) mkdir -m $mode -p $file ;; c) mknod -m $mode $file $type ${majmin%:*} ${majmin#*:} ;; esac done fi trap "emergency_shell Signal caught!" 0 export UDEVVERSION=$(udevadm --version | { read v _ ; echo $v ; }) if [ $UDEVVERSION -gt 166 ]; then # newer versions of udev use /run/udev/rules.d export UDEVRULESD=/run/udev/rules.d [ -d /run/udev ] || mkdir -p -m 0755 /run/udev [ -d $UDEVRULESD ] || mkdir -p -m 0755 $UDEVRULESD else mkdir -m 0755 /dev/.udev /dev/.udev/rules.d export UDEVRULESD=/dev/.udev/rules.d fi if [ "$RD_DEBUG" = "yes" ]; then mkfifo /run/initramfs/loginit.pipe loginit $DRACUT_QUIET </run/initramfs/loginit.pipe >/dev/console 2>&1 & exec >/run/initramfs/loginit.pipe 2>&1 else exec 0<>/dev/console 1<>/dev/console 2<>/dev/console fi [ -f /usr/lib/initrd-release ] && . /usr/lib/initrd-release [ -n "$VERSION_ID" ] && info "$NAME-$VERSION_ID" source_conf /etc/conf.d if getarg "rd.cmdline=ask"; then echo "Enter additional kernel command line parameter (end with ctrl-d or .)" while read -p "> " line || [ -n "$line" ]; do [ "$line" = "." ] && break echo "$line" >> /etc/cmdline.d/99-cmdline-ask.conf done fi if ! getargbool 1 'rd.hostonly'; then [ -f /etc/cmdline.d/99-cmdline-ask.conf ] && mv /etc/cmdline.d/99-cmdline-ask.conf /tmp/99-cmdline-ask.conf remove_hostonly_files [ -f /tmp/99-cmdline-ask.conf ] && mv /tmp/99-cmdline-ask.conf /etc/cmdline.d/99-cmdline-ask.conf fi # run scriptlets to parse the command line make_trace_mem "hook cmdline" '1+:mem' '1+:iomem' '3+:slab' getarg 'rd.break=cmdline' -d 'rdbreak=cmdline' && emergency_shell -n cmdline "Break before cmdline" source_hook cmdline [ -z "$root" ] && die "No or empty root= argument" [ -z "$rootok" ] && die "Don't know how to handle 'root=$root'" export root rflags fstype netroot NEWROOT # pre-udev scripts run before udev starts, and are run only once. make_trace_mem "hook pre-udev" '1:shortmem' '2+:mem' '3+:slab' getarg 'rd.break=pre-udev' -d 'rdbreak=pre-udev' && emergency_shell -n pre-udev "Break before pre-udev" source_hook pre-udev UDEV_LOG=err getargbool 0 rd.udev.info -d -y rdudevinfo && UDEV_LOG=info getargbool 0 rd.udev.debug -d -y rdudevdebug && UDEV_LOG=debug # start up udev and trigger cold plugs UDEV_LOG=$UDEV_LOG $systemdutildir/systemd-udevd --daemon --resolve-names=never UDEV_QUEUE_EMPTY="udevadm settle --timeout=0" if [ $UDEVVERSION -lt 140 ]; then UDEV_QUEUE_EMPTY="udevadm settle --timeout=1" fi udevproperty "hookdir=$hookdir" make_trace_mem "hook pre-trigger" '1:shortmem' '2+:mem' '3+:slab' getarg 'rd.break=pre-trigger' -d 'rdbreak=pre-trigger' && emergency_shell -n pre-trigger "Break before pre-trigger" source_hook pre-trigger udevadm control --reload >/dev/null 2>&1 || : # then the rest udevadm trigger --type=subsystems --action=add >/dev/null 2>&1 udevadm trigger --type=devices --action=add >/dev/null 2>&1 make_trace_mem "hook initqueue" '1:shortmem' '2+:mem' '3+:slab' getarg 'rd.break=initqueue' -d 'rdbreak=initqueue' && emergency_shell -n initqueue "Break before initqueue" RDRETRY=$(getarg rd.retry -d 'rd_retry=') RDRETRY=${RDRETRY:-180} RDRETRY=$(($RDRETRY*2)) export RDRETRY main_loop=0 export main_loop while :; do check_finished && break udevsettle check_finished && break if [ -f $hookdir/initqueue/work ]; then rm -f -- $hookdir/initqueue/work fi for job in $hookdir/initqueue/*.sh; do [ -e "$job" ] || break job=$job . $job check_finished && break 2 done $UDEV_QUEUE_EMPTY >/dev/null 2>&1 || continue for job in $hookdir/initqueue/settled/*.sh; do [ -e "$job" ] || break job=$job . $job check_finished && break 2 done $UDEV_QUEUE_EMPTY >/dev/null 2>&1 || continue # no more udev jobs and queues empty. sleep 0.5 if [ $main_loop -gt $((2*$RDRETRY/3)) ]; then for job in $hookdir/initqueue/timeout/*.sh; do [ -e "$job" ] || break job=$job . $job udevadm settle --timeout=0 >/dev/null 2>&1 || main_loop=0 [ -f $hookdir/initqueue/work ] && main_loop=0 done fi main_loop=$(($main_loop+1)) [ $main_loop -gt $RDRETRY ] \ && { flock -s 9 ; emergency_shell "Could not boot."; } 9>/.console_lock done unset job unset queuetriggered unset main_loop unset RDRETRY # pre-mount happens before we try to mount the root filesystem, # and happens once. make_trace_mem "hook pre-mount" '1:shortmem' '2+:mem' '3+:slab' getarg 'rd.break=pre-mount' -d 'rdbreak=pre-mount' && emergency_shell -n pre-mount "Break pre-mount" source_hook pre-mount getarg 'rd.break=mount' -d 'rdbreak=mount' && emergency_shell -n mount "Break mount" # mount scripts actually try to mount the root filesystem, and may # be sourced any number of times. As soon as one suceeds, no more are sourced. _i_mount=0 while :; do if ismounted "$NEWROOT"; then usable_root "$NEWROOT" && break; umount "$NEWROOT" fi for f in $hookdir/mount/*.sh; do [ -f "$f" ] && . "$f" if ismounted "$NEWROOT"; then usable_root "$NEWROOT" && break; warn "$NEWROOT has no proper rootfs layout, ignoring and removing offending mount hook" umount "$NEWROOT" rm -f -- "$f" fi done _i_mount=$(($_i_mount+1)) [ $_i_mount -gt 20 ] \ && { flock -s 9 ; emergency_shell "Can't mount root filesystem"; } 9>/.console_lock done { printf "Mounted root filesystem " while read dev mp rest || [ -n "$dev" ]; do [ "$mp" = "$NEWROOT" ] && echo $dev; done < /proc/mounts } | vinfo # pre pivot scripts are sourced just before we doing cleanup and switch over # to the new root. make_trace_mem "hook pre-pivot" '1:shortmem' '2+:mem' '3+:slab' getarg 'rd.break=pre-pivot' -d 'rdbreak=pre-pivot' && emergency_shell -n pre-pivot "Break pre-pivot" source_hook pre-pivot make_trace_mem "hook cleanup" '1:shortmem' '2+:mem' '3+:slab' # pre pivot cleanup scripts are sourced just before we switch over to the new root. getarg 'rd.break=cleanup' -d 'rdbreak=cleanup' && emergency_shell -n cleanup "Break cleanup" source_hook cleanup # By the time we get here, the root filesystem should be mounted. # Try to find init. for i in "$(getarg real_init=)" "$(getarg init=)" $(getargs rd.distroinit=) /sbin/init; do [ -n "$i" ] || continue __p=$(readlink -f "${NEWROOT}/${i}") if [ -x "$__p" -o -x "${NEWROOT}/${__p}" ]; then INIT="$i" break fi done [ "$INIT" ] || { echo "Cannot find init!" echo "Please check to make sure you passed a valid root filesystem!" emergency_shell } if [ $UDEVVERSION -lt 168 ]; then # stop udev queue before killing it udevadm control --stop-exec-queue HARD="" while pidof udevd >/dev/null 2>&1; do for pid in $(pidof udevd); do kill $HARD $pid >/dev/null 2>&1 done HARD="-9" done else udevadm control --exit udevadm info --cleanup-db fi debug_off # Turn off debugging for this section # unexport some vars export_n root rflags fstype netroot NEWROOT export RD_TIMESTAMP # Clean up the environment for i in $(export -p); do i=${i#declare -x} i=${i#export} strstr "$i" "=" || continue i=${i%%=*} [ -z "$i" ] && continue case $i in root|PATH|HOME|TERM|PS4|RD_*) :;; *) unset "$i";; esac done . /tmp/export.orig 2>/dev/null || : rm -f -- /tmp/export.orig initargs="" read CLINE </proc/cmdline if getarg init= >/dev/null ; then ignoreargs="console BOOT_IMAGE" # only pass arguments after init= to the init CLINE=${CLINE#*init=} set -- $CLINE shift # clear out the rest of the "init=" arg for x in "$@"; do for s in $ignoreargs; do [ "${x%%=*}" = $s ] && continue 2 done initargs="$initargs $x" done unset CLINE else debug_off # Turn off debugging for this section set -- $CLINE for x in "$@"; do case "$x" in [0-9]|s|S|single|emergency|auto ) \ initargs="$initargs $x" ;; esac done fi debug_on if ! [ -d "$NEWROOT"/run ]; then NEWRUN=/dev/.initramfs mkdir -m 0755 "$NEWRUN" mount --rbind /run/initramfs "$NEWRUN" fi wait_for_loginit # remove helper symlink [ -h /dev/root ] && rm -f -- /dev/root bv=$(getarg rd.break -d rdbreak) && [ -z "$bv" ] && emergency_shell -n switch_root "Break before switch_root" unset bv info "Switching root" unset PS4 CAPSH=$(command -v capsh) SWITCH_ROOT=$(command -v switch_root) PATH=$OLDPATH export PATH if [ -f /etc/capsdrop ]; then . /etc/capsdrop info "Calling $INIT with capabilities $CAPS_INIT_DROP dropped." unset RD_DEBUG exec $CAPSH --drop="$CAPS_INIT_DROP" -- \ -c "exec switch_root \"$NEWROOT\" \"$INIT\" $initargs" || \ { warn "Command:" warn capsh --drop=$CAPS_INIT_DROP -- -c exec switch_root "$NEWROOT" "$INIT" $initargs warn "failed." emergency_shell } else unset RD_DEBUG exec $SWITCH_ROOT "$NEWROOT" "$INIT" $initargs || { warn "Something went very badly wrong in the initramfs. Please " warn "file a bug against dracut." emergency_shell } fi
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