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" } log_end_msg() { _log_msg "done.\n" } # Add failure hook add_mountroot_fail_hook() { mkdir -p /tmp/mountroot-fail-hooks.d ln -s "$0" /tmp/mountroot-fail-hooks.d/"$1" } # Run failure hooks. # When a failure hook exits "1", it has not done anything to correct the # system. Exiting "0" means that something has been attempted to resolve # the lack of a root filesystem. # Hooks are run in lexigraphical order, and are responsible for removing # themselves if they should not re-run in a later cycle. When one exits # "0", the stack is stopped, so the caller can return to the main rootfs # wait loop. try_failure_hooks() { local hook # Disable usplash so text from hooks can be seen if [ -x /sbin/usplash_write ]; then /sbin/usplash_write "QUIT" fi chvt 1 if [ -x /bin/plymouth ] && plymouth --ping; then /bin/plymouth hide-splash > /dev/null 2>&1 fi for hook in /tmp/mountroot-fail-hooks.d/*; do if [ -x ${hook} ] && ${hook} mountfail; then return 0 fi done return 1 } panic() { local console rest if command -v chvt >/dev/null 2>&1; then chvt 1 fi echo "$@" # Disallow console access if [ -n "${panic}" ]; then echo "Rebooting automatically due to panic= boot argument" [ "$panic" = "-1" ] || sleep "${panic}" reboot exit # in case reboot fails, force kernel panic fi run_scripts /scripts/panic # Try to use setsid, which will enable job control in the shell # and paging in more if command -v setsid >/dev/null 2>&1; then read console rest /dev/${console} 1>&0 2>&1" else REASON="$@" PS1='(initramfs) ' sh -i /dev/console 2>&1 fi } maybe_break() { case ",$break," in *,$1,*) if [ "$1" = "top" ]; then # udev is not yet running, so load keyboard drivers if [ "${quiet}" = "y" ]; then opts="-q" else opts="-v" fi modprobe ${opts} -a i8042 atkbd ehci-pci ehci-orion \ ehci-hcd ohci-hcd ohci-pci uhci-hcd usbhid xhci \ xhci-pci xhci-hcd sleep 2 for modalias in /sys/bus/hid/devices/*/modalias; do if [ -f "${modalias}" ]; then modprobe ${opts} -b "$(cat ${modalias})" fi done fi panic "Spawning shell within the initramfs" ;; esac } render() { eval "echo -n \${$@}" } # For boot time only; this is overridden at build time in hook-functions run_scripts() { initdir=${1} [ ! -d ${initdir} ] && return shift . ${initdir}/ORDER } # Load custom modules first load_modules() { if [ -e /conf/modules ]; then cat /conf/modules | while read m; do # Skip empty lines if [ -z "$m" ]; then continue fi # Skip comments - d?ash removes whitespace prefix com=$(printf "%.1s" "${m}") if [ "$com" = "#" ]; then continue fi modprobe $m done fi } # lilo compatibility parse_numeric() { case $1 in *:*) # Does it match /[0-9]*:[0-9]*/? minor=${1#*:} major=${1%:*} case $major$minor in *[!0-9]*) # No. return ;; esac ;; "" | *[!A-Fa-f0-9]*) # "", "/*", etc. return ;; *) # [A-Fa-f0-9]* value=$(( 0x${1} )) minor=$(( (${value} & 0xff) | (${value} >> 12) & 0xfff00 )) major=$(( (${value} >> 8) & 0xfff )) ;; esac ROOT="/dev/block/${major}:${minor}" } # Parameter: device node to check # Echos fstype to stdout # Return value: indicates if an fs could be recognized get_fstype () { local FS FSTYPE FSSIZE RET FS="${1}" # blkid has a more complete list of file systems, # but fstype is more robust FSTYPE="unknown" eval $(fstype "${FS}" 2> /dev/null) if [ "$FSTYPE" = "unknown" ]; then FSTYPE=$(blkid -o value -s TYPE "${FS}") fi RET=$? if [ -z "${FSTYPE}" ]; then FSTYPE="unknown" fi echo "${FSTYPE}" return ${RET} } all_netbootable_devices() { for device in /sys/class/net/* ; do if [ ! -e $device/flags ]; then continue fi loop=$(($(cat $device/flags) & 0x8 && 1 || 0)) bc=$(($(cat $device/flags) & 0x2 && 1 || 0)) ptp=$(($(cat $device/flags) & 0x10 && 1 || 0)) # Skip any device that is a loopback if [ $loop = 1 ]; then continue fi # Skip any device that isn't a broadcast # or point-to-point. if [ $bc = 0 ] && [ $ptp = 0 ]; then continue fi if [ "${NETWORK_SKIP_ENSLAVED:-0}" = 0 ]; then DEVICE="$DEVICE $(basename $device)" else # Skip enslaved device (has "master" link # attribute on it) dev="$(basename $device)" ip -o link show "$dev" | grep -q -w master if [ "$?" -eq 0 ]; then continue fi DEVICE="$DEVICE $dev" fi done echo $DEVICE } configure_networking() { if [ -n "${BOOTIF}" ]; then # pxelinux sets BOOTIF to a value based on the mac address of the # network card used to PXE boot, so use this value for DEVICE rather # than a hard-coded device name from initramfs.conf. this facilitates # network booting when machines may have multiple network cards. # pxelinux sets BOOTIF to 01-$mac_address # strip off the leading "01-", which isn't part of the mac # address temp_mac=${BOOTIF#*-} # convert to typical mac address format by replacing "-" with ":" bootif_mac="" IFS='-' for x in $temp_mac ; do if [ -z "$bootif_mac" ]; then bootif_mac="$x" else bootif_mac="$bootif_mac:$x" fi done unset IFS # look for devices with matching mac address, and set DEVICE to # appropriate value if match is found. for device in /sys/class/net/* ; do if [ -f "$device/address" ]; then current_mac=$(cat "$device/address") if [ "$bootif_mac" = "$current_mac" ]; then DEVICE=${device##*/} DEVICE6=${device##*/} break fi fi done fi wait_for_udev 10 # support ip options see linux sources # Documentation/filesystems/nfs/nfsroot.txt # Documentation/frv/booting.txt for ROUNDTTT in 2 3 4 6 9 16 25 36 64 100; do # The NIC is to be configured if this file does not exist. # Ip-Config tries to create this file and when it succeds # creating the file, ipconfig is not run again. for x in /run/net-"${DEVICE}".conf /run/net-*.conf ; do if [ -e "$x" ]; then IP=done break fi done for x in /run/net6-"${DEVICE}".conf /run/net6-*.conf ; do if [ -e "$x" ]; then IP6=done break fi done # if we've reached a point where both IP and IP6 are "done", # then we're finished with network configuration. if [ "$IP" = done ] && [ "$IP6" = done ]; then break fi case ${IP} in none|done|off) # Do nothing IP=done ;; ""|on|any) # Bring up device # if we don't have a DEVICE specified, try to bring up # all eligible devices one at a time. if [ "${NETWORK_SKIP_ENSLAVED:-0}" != 0 ] && [ -z "${DEVICE}" ]; then DEVICES=$(all_netbootable_devices) for dev in ${DEVICES} ; do ipconfig -t ${ROUNDTTT} "${dev}" done else ipconfig -t ${ROUNDTTT} "${DEVICE}" fi ;; dhcp|bootp|rarp|both) ipconfig -t ${ROUNDTTT} -c ${IP} -d "${DEVICE}" ;; *) ipconfig -t ${ROUNDTTT} -d $IP # grab device entry from ip option NEW_DEVICE=${IP#*:*:*:*:*:*} if [ "${NEW_DEVICE}" != "${IP}" ]; then NEW_DEVICE=${NEW_DEVICE%%:*} else # wrong parse, possibly only a partial string NEW_DEVICE= fi if [ -n "${NEW_DEVICE}" ]; then DEVICE="${NEW_DEVICE}" fi ;; esac case ${IP6} in ""|none|done|off) # Do nothing IP6=done ;; *) # if this is not the first loop, sleep to provide the backoff. [ "$(($ROUNDTTT-2))" = "0" ] || sleep $ROUNDTTT # check the content of IP6, if we have something other # than a device name there and BOOTIF isn't set, clear # DEVICE6 and we'll try all available devices. if echo "${IP6}" | grep -v '^\(on\|dhcp\|any\)$'; then DEVICE6="$IP6" fi # if we don't have a device specified, try to bring up # any eligible device. if [ -z "${DEVICE6}" ]; then DEVICE6=$(all_netbootable_devices) fi # Bring up device for dev in ${DEVICE6} ; do dhclient -6 -1 -v "${dev}" done DEVICE6=$dev ;; esac done # source ipconfig output for either $DEVICE or the first one. # If the user is booting with only IPv6, then DEVICE may be set, # but no IPv4 conf files exist. for conf in /run/net-${DEVICE}.conf /run/net-*.conf; do if [ -e "${conf}" ]; then # source specific bootdevice . ${conf} break fi done netinfo_to_resolv_conf /etc/resolv.conf \ /run/net-${DEVICE}.conf /run/net-*.conf /run/net6-*.conf netinfo_to_netplan /run/netplan \ /run/net-${DEVICE}.conf /run/net-*.conf /run/net6-*.conf } netinfo_to_resolv_conf() { # netinfo_to_resolv_conf(output, files) # write resolv_conf from /run/net- style files. if [ "${_in_subshell:-0}" = "0" ]; then # subshell to avoid modification of variables by '.' ( _in_subshell=1; netinfo_to_resolv_conf "$@" ) return fi local output="$1" search="" ns="" f="" n="" shift for f in "$@"; do [ -f "$f" ] || continue unset IPV4DNS0 IPV4DNS1 IPV6DNS0 IPV6DNS1 unset DOMAINSEARCH IPV6DOMAINSEARCH . "$f" || { echo "WARN: failed '. \"$f\"'" 1>&2; return 1; } for n in "${IPV4DNS0}" "${IPV4DNS1}" \ "${IPV6DNS0}" "${IPV6DNS1}"; do [ -n "$n" -a "$n" != "0.0.0.0" ] || continue # skip if 'n' already in list. case " ${ns} " in *\ $n\ *) continue;; esac ns="${ns} ${n}" done for n in "${DOMAINSEARCH}" "${IPV6DOMAINSEARCH}"; do [ -n "$n" ] || continue # skip if already in search. case " ${search}" in *\ $n\ *) continue;; esac search="$search $n" done search=${search# } ns=${ns# } done local rconf="" CR=" " for n in ${ns}; do rconf="${rconf}nameserver $n${CR}" done if [ -n "${search}" ]; then rconf="${rconf}search ${search}${CR}" fi if [ -z "$rconf" ]; then echo "no search or nameservers found in $*" 1>&2 fi if [ "$rconf" = "-" ]; then echo -n "$rconf" else echo -n "$rconf" > "$output" fi } mask2cidr() { # https://forum.openwrt.org/viewtopic.php?pid=220781#p220781 # Assumes there's no "255." after a non-255 byte in the mask local x=${1##*255.} set -- 0^^^128^192^224^240^248^252^254^ $(( (${#1} - ${#x})*2 )) ${x%%.*} x=${1%%$3*} echo $(( $2 + (${#x}/4) )) } _declare_sh_append_var() { # append_var(name, skip, strings) # write a declaration of name that will append to any existing local name="$1" skip="$2" add="" n="" shift 2 for n in "$@"; do [ -n "$n" -a "$n" != "$skip" ] || continue add="$add $n" done add=${add# } [ -n "$add" ] || return 0 echo "$name=\"\${${name}:+\${${name}} }${add}\"" } _declare_ip_info() { # declare_ip_info(version, proto, address, netmask, gateway) local version="$1" proto="$2" address="$3" netmask="$4" gateway="$5" local netprefix="" if [ "$proto" = "dhcp" -o "$proto" = "dhcp4" -o "$proto" = "dhcp6" ]; then echo "dhcp${version}=true" elif [ "$proto" = "static" ]; then if [ -n "$address" ]; then netprefix=$netmask if [ "$version" = "4" ]; then netprefix=$(mask2cidr "$netmask") fi _declare_sh_append_var addresses "" "$address/$netprefix" fi if [ -n "$gateway" ]; then echo "gateway${version}=$gateway" fi fi } # If the following are all true, this device is a net_failover master: # 1 /sys/class/net/[ifname]/device links to a virtio device; note that # the master's actual device driver (ethtool -i) is net_failover # 2 device does NOT have the 'master' sysfs attribute (master is # a link to the device's master, so it's a slave if it has this) # 3 device has 'standby' virtio feature bit set (bit 62 counting from 0 # in /sys/class/net/[ifname]/device/features). net_failover master # and virtio_net slaves both get this as sysfs device attribute # # As of kernel 5.3, net_failover is only implemented for virtio_net # is_net_failover_master() { local ifname="$1" driver local sysfspath="/sys/class/net/${ifname}" local virtio_features virtio_standby if [ ! -e "${sysfspath}" -o ! -e "${sysfspath}/device" ]; then return 1 fi driver="$(basename $(readlink ${sysfspath}/device/driver))" if [ "${driver}" != "virtio_net" ]; then return 1 fi if [ -e "${sysfspath}/master" ]; then return 1 fi virtio_features=$(cat "${sysfspath}/device/features") virtio_standby="$(expr substr $virtio_features 63 1)" if [ "${virtio_standby}" = "0" ]; then return 1 fi return 0 } _render_netplan() { # write a netplan stanza for the given device. local name="$1" mac="$2" dhcp4="$3" dhcp6="$4" addrs="$5" \ gateway4="$6" gateway6="$7" ns_addrs="$8" ns_search="$9" local n found="" local nfm=0 echo "network:" echo " version: 2" echo " renderer: networkd" echo " ethernets:" echo " $name:" # if $name is a net_failover master, do not use match: macaddress if is_net_failover_master "$name"; then nfm=1 fi if [ -n "$mac" ]; then if [ "$nfm" -ne 1 ]; then echo " match:" echo " macaddress: \"$mac\"" fi echo " set-name: $name" fi if [ -n "$dhcp4" ]; then echo " dhcp4: $dhcp4" echo " dhcp-identifier: mac" fi [ -n "$dhcp6" ] && echo " dhcp6: $dhcp6" ( [ -n "$dhcp4" ] || [ -n "$dhcp6" ] ) && echo " critical: true" if [ -n "$addrs" ]; then echo " addresses:" found="," for n in $addrs; do # remove dups [ "${found#*,$n,}" = "${found}" ] || continue found="${found}$n," echo " - \"$n\"" done fi [ -n "$gateway4" ] && echo " gateway4: \"$gateway4\"" [ -n "$gateway6" ] && echo " gateway6: \"$gateway6\"" if [ -n "$ns_addrs" ]; then local alist="[" slist="" for n in $ns_addrs; do # do not put in duplicates [ "${alist#*\"$n\"}" = "$alist" ] || continue alist="${alist}\"$n\", "; done alist="${alist%, }]" if [ -n "$ns_search" ]; then slist="[" for n in ${ns_search}; do # do not put in duplicates [ "${slist#*\"$n\"}" = "$slist" ] || continue slist="${slist}\"$n\", "; done slist="${slist%, }]" fi echo " nameservers:" echo " addresses: $alist" [ -n "$slist" ] && echo " search: $slist" fi } netinfo_to_netplan() { # read /run/net-* files write netplan config. if [ "${_in_subshell:-0}" = "0" ]; then # subshell to avoid modification of variables by '.' ( _in_subshell=1; netinfo_to_netplan "$@" ) return fi local out_d="$1" tmpd if command -v mktemp >/dev/null 2>&1; then tmpd=$(mktemp -d "${TMPDIR:-/tmp}/${0##*/}.XXXXXX") else tmpd="${TMPDIR:-/tmp}/${0##*/}.niinfo.$$" mkdir -p "$tmpd" || return fi local devices="" pre="" mac="" # we go through all the files presented and create per-device files in # a tmpdir that are shell sourceable and closer to the netplan that # we want to render. Then render those to netplan stanzas. for f in "$@"; do [ -f "$f" ] || continue unset DEVICE DEVICE6 PROTO IPV6PROTO unset IPV6ADDR IPV6NETMASK IPV6GATEWAY unset IPV4ADDR IPV4NETMASK IPV4GATEWAY . "$f" || { echo "WARN: failed '. \"$f\"'" 1>&2; return 1; } local name="" name=${DEVICE:-${DEVICE6}} [ -n "$name" ] || { echo "WARN: $f did not define DEVICE or DEVICE6" 1>&2; return 1; } case " ${devices} " in *\ ${name}\ *) :;; *) devices="${devices} ${name}" esac if [ ! -e "$tmpd/$name" -a -r "/sys/class/net/$name/address" ]; then read mac < /sys/class/net/$name/address && echo "macaddress=$mac" > "$tmpd/$name" fi { if [ -n "$DEVICE" ]; then _declare_ip_info 4 "$PROTO" "$IPV4ADDR" "$IPV4NETMASK" "$IPV4GATEWAY" elif [ -n "$DEVICE6" ]; then _declare_ip_info 6 "$IPV6PROTO" "$IPV6ADDR" "$IPV6NETMASK" \ "$IPV6GATEWAY" fi _declare_sh_append_var ns_addresses "0.0.0.0" \ "${IPV4DNS0}" "${IPV4DNS1}" "${IPV6DNS0}" "${IPV6DNS1}" _declare_sh_append_var ns_search "" "$DOMAINSEARCH" "$IPV6DOMAINSEARCH" } >> "$tmpd/$name" done [ -d "$out_d" ] || mkdir -p "$out_d" || { echo "WARN: failed mkdir $out_d"; return 1; } for name in $devices; do local macaddress="" dhcp4="" dhcp6="" addresses="" local gateway4="" gateway6="" ns_addresses="" ns_search="" . "$tmpd/$name" _render_netplan "$name" "$macaddress" "$dhcp4" "$dhcp6" "$addresses" \ "$gateway4" "$gateway6" "$ns_addresses" "$ns_search" \ > "${out_d}/$name.yaml" done rm -Rf "$tmpd" } # Wait for queued kernel/udev events wait_for_udev() { command -v udevadm >/dev/null 2>&1 || return 0 udevadm settle ${1:+--timeout=$1} } # Find a specific fstab entry # $1=mountpoint # $2=fstype (optional) # returns 0 on success, 1 on failure (not found or no fstab) read_fstab_entry() { # Not found by default. found=1 for file in ${rootmnt}/etc/fstab; do if [ -f "$file" ]; then while read MNT_FSNAME MNT_DIR MNT_TYPE MNT_OPTS MNT_FREQ MNT_PASS MNT_JUNK; do case "$MNT_FSNAME" in ""|\#*) continue; ;; esac if [ "$MNT_DIR" = "$1" ]; then if [ -n "$2" ]; then [ "$MNT_TYPE" = "$2" ] || continue; fi found=0 break 2 fi done < "$file" fi done return $found } # Resolve device node from a name. This expands any LABEL or UUID. # $1=name # Resolved name is echoed. resolve_device() { DEV="$1" local orig="$DEV" case "$DEV" in LABEL=* | UUID=* | PARTLABEL=* | PARTUUID=*) DEV="$(blkid -l -t "$DEV" -o device)" if [ "$?" != 0 ]; then DEV="$orig" # Support uppercase and lowercase UUIDs -- see RFC#4122: # "Each field is treated as an integer and has its value printed as # a zero-filled hexadecimal digit string with the most significant # digit first. The hexadecimal values "a" through "f" are output as # lower case characters and are case insensitive on input." # # Note: that blkid which we will use to map these assums the input is lower # case. # Only apply this behaviour to UUIDs. case "$DEV" in UUID=* | PARTUUID=*) ;; *) return 1 ;; esac # Pull DEV appart and map it. local type=$(echo ${DEV} | cut -f 1 -d =) local value=$(echo ${DEV} | cut -f 2 -d = | tr '[A-F]' '[a-f]') # ... in RFC#4122 format; # look for five hexadecimal fragments separated by minus signs. local fmt=$( echo "$value" | sed -e 's/[0-9a-fA-F]*//g' ) if [ "$fmt" != '----' ]; then return 1 fi DEV="${type}=${value}" # Retry with the lower cased UUID. DEV="$(blkid -l -t "$DEV" -o device)" || return 1 fi ;; esac [ -e "$DEV" ] && echo "$DEV" } # Check a file system. # $1=device # $2=mountpoint (for diagnostics only) # $3=type (may be "auto") _checkfs_once() { DEV="$1" NAME="$2" TYPE="$3" if [ "$NAME" = "/" ] ; then NAME="root" fi FSCK_LOGFILE=/run/initramfs/fsck.log FSCK_STAMPFILE=/run/initramfs/fsck-${NAME#/} if [ "${TYPE}" = "auto" ]; then TYPE="$(get_fstype "${DEV}")" fi FSCKCODE=0 if ! command -v fsck >/dev/null 2>&1; then log_warning_msg "fsck not present, so skipping $NAME file system" return fi if [ "$fastboot" = "y" ] ; then log_warning_msg "Fast boot enabled, so skipping $NAME file system check." return fi if [ "$forcefsck" = "y" ] then force="-f" else force="" fi if [ "$fsckfix" = "y" ] then fix="-y" elif [ "$fsckfix" = "n" ] then fix="-n" else fix="-a" fi spinner="" if [ -z "${debug}" ]; then spinner="-C" fi if [ "${quiet}" = n ] then log_begin_msg "Will now check $NAME file system" logsave -a -s $FSCK_LOGFILE fsck $spinner $force $fix -V -t $TYPE $DEV FSCKCODE=$? log_end_msg else log_begin_msg "Checking $NAME file system" logsave -a -s $FSCK_LOGFILE fsck $spinner $force $fix -T -t $TYPE $DEV FSCKCODE=$? log_end_msg fi # NOTE: "failure" is defined as exiting with a return code of # 4, possibly or-ed with other flags. A return code of 1 # indicates that file system errors were corrected but that # the boot may proceed. # if [ "$FSCKCODE" -eq 32 ] then log_warning_msg "File system check was interrupted by user" elif [ $((FSCKCODE & 4)) -eq 4 ] then log_failure_msg "File system check of the $NAME filesystem failed" return 1 elif [ "$FSCKCODE" -gt 1 ] then log_warning_msg "File system check failed but did not detect errors" sleep 5 else > $FSCK_STAMPFILE fi return 0 } checkfs() { while ! _checkfs_once "$@"; do panic "The $2 filesystem on $1 requires a manual fsck" done } # Mount a file system. We parse the information from the fstab. This # should be overridden by any boot script which can mount arbitrary # filesystems such as /usr. This default implementation delegates to # local or nfs based upon the filesystem type. # $1=mountpoint mount location mountfs() { type=local read_fstab_entry "$1" if [ "${MNT_TYPE}" = "nfs" ] || [ "${MNT_TYPE}" = "nfs4" ]; then type=nfs fi ${type}_mount_fs "$1" } # Mount the root file system. It should be overridden by all # boot scripts. mountroot() { : } # Run /scripts/${boot}-top. This should be overridden by all boot # scripts. mount_top() { : } # Run /scripts/${boot}-premount. This should be overridden by all boot # scripts. mount_premount() { : } # Run /scripts/${boot}-bottom. This should be overridden by all boot # scripts. mount_bottom() { : }