232 lines
6.6 KiB
Bash
232 lines
6.6 KiB
Bash
#!/bin/bash
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# Location of files which contains list of protected files
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PROTECTED_FILE_LIST='/etc/qubes/protected-files.d'
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PER_VM_PROTECTED_FILE_LIST='/rw/config/protected-files.d'
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qsvc() {
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# Returns whether a service is enabled.
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# Usage: qsvc <nameofservice>
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#
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# Must only be used after qubes-sysinit has started.
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# See qsvc_early for more information.
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local count=100
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while [ ! -e /var/run/qubes-service-environment ] ; do
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if [ "$count" = "0" ] ; then
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echo "qsvc: Warning: qubes-sysinit has not finished executing yet" >&2
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break
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fi
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sleep 0.1
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count=$(( count - 1 ))
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done
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[ -e /var/run/qubes-service/"$1" ]
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}
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under_systemd() {
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pidof systemd >/dev/null 2>&1
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}
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systemd_version_changed() {
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under_systemd || return
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systemd_pkg_version=$(systemctl --version|head -n 1)
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if dmesg | grep -q "$systemd_pkg_version running in system mode."; then
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return 1
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fi
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return 0
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}
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have_qubesdb() {
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# Tests whether qubesdb-read exists and can be executed.
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type qubesdb-read >/dev/null 2>&1
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}
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have_qrexec_agent() {
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# Tests whether qrexec-agent exists and can be executed.
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PATH=/usr/lib/qubes type qrexec-agent >/dev/null 2>&1
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}
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qubes_vm_type() {
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qubesdb-read /qubes-vm-type
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}
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is_netvm() {
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[ "$(qubes_vm_type)" = "NetVM" ]
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}
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is_appvm() {
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[ "$(qubes_vm_type)" = "AppVM" ]
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}
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is_proxyvm() {
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[ "$(qubes_vm_type)" = "ProxyVM" ]
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}
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is_templatevm() {
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[ "$(qubes_vm_type)" = "TemplateVM" ]
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}
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is_dispvm() {
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[ "$(qubesdb-read /type)" = "DispVM" ]
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}
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is_fully_persistent() {
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[ "$(qubesdb-read /qubes-vm-persistence)" = "full" ]
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}
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is_rwonly_persistent() {
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[ "$(qubesdb-read /qubes-vm-persistence)" = "rw-only" ]
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}
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is_updateable() {
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[ "$(qubesdb-read /qubes-vm-updateable)" = "True" ]
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}
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reload_random_seed() {
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local seed
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seed=$(qubesdb-read /qubes-random-seed)
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echo "$seed" | base64 -d > /dev/urandom
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qubesdb-rm /qubes-random-seed
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}
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is_protected_file() {
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local ret=1
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local pfilelist
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for pfilelist in "$PROTECTED_FILE_LIST" "$PER_VM_PROTECTED_FILE_LIST" ; do
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if test -d "$pfilelist" ; then
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# If this succeeds, we return immediately to the caller.
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# If not, we let the loop continue.
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grep -Fxrq --exclude='*.rpmsave' --exclude='*~' --exclude='*.rpmnew' --exclude='*.rpmold' -- "${1}" "$pfilelist" 2>/dev/null && return 0 || ret="$?"
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fi
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done
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return "$ret"
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}
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umount_retry() {
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local count=5
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while mountpoint -q "$1" ; do
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if umount "$1" ; then break ; fi
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echo "Something prevents unmounting $1:" >&2
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fuser -vmM "$1" >&2
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if [ "$count" = "0" ] ; then
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return 1
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fi
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sleep 5
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count=$(( count - 1 ))
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done
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return 0
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}
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get_mac_from_iface() {
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local iface="$1"
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local mac
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if [ "x$iface" != "x" ] && [ -e "/sys/class/net/$iface" ]; then
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mac="$(cat "/sys/class/net/$iface/address")"
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fi
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echo "$mac"
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}
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get_iface_from_mac() {
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local mac="$1"
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local iface
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if [ "x$mac" != "x" ]; then
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iface="$(ip -o link | grep -i "$mac" | awk '{print $2}' | cut -d ':' -f1)"
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fi
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echo "$iface"
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}
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get_qubes_managed_iface() {
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local mac
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local qubes_iface
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mac="$(qubesdb-read /qubes-mac 2> /dev/null)"
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qubes_iface="$(get_iface_from_mac "$mac")"
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if [ "x$qubes_iface" != "x" ]; then
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echo "$qubes_iface"
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else
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echo eth0
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fi
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}
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# Based on: https://forums.gentoo.org/viewtopic-t-888736-start-0.html
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get_prefix_from_subnet() {
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local subnet="$1"
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local x=${subnet##*255.}
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set -- 0^^^128^192^224^240^248^252^254^ $(( (${#1} - ${#x})*2 )) "${x%%.*}"
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x=${1%%$3*}
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prefix=$(( $2 + (${#x}/4) ))
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if [ "x$prefix" != "x" ]; then
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echo "$prefix"
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else
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echo "32"
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fi
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}
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initialize_home() {
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local home_root
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local mode
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#local user
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local uid
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local gid
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local homedir
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local homedirwithouthome
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local pair
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local homedir_uid
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local homedir_gid
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local waitpid
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local waitpids
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home_root="$1"
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mode="$2"
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if [ -z "$home_root" ] ; then
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echo "initialize_home() needs a target home root directory, such as /rw/home, as first parameter" >&2
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return 64
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fi
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if [ "$mode" != "unconditionally" ] && [ "$mode" != "ifneeded" ] ; then
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echo "initialize_home() second parameter must be 'unconditionally' or 'ifneeded'" >&2
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return 64
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fi
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if ! [ -d "$home_root" ] ; then
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echo "initialize_home: populating $home_root" >&2
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mkdir -p "$home_root"
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fi
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# Chown home if users' UIDs have changed - can be the case on template switch.
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for pair in $(getent passwd | awk -F : '/\/home/ { print $1":"$3":"$4":"$6 } ') ; do
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#user=$(echo "$pair" | awk -F : ' { print $1 } ')
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uid=$(echo "$pair" | awk -F : ' { print $2 } ')
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gid=$(echo "$pair" | awk -F : ' { print $3 } ')
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homedir=$(echo "$pair" | awk -F : ' { print $4 } ')
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homedirwithouthome=${homedir#/home/}
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if ! test -d "$home_root/$homedirwithouthome" || [ "$mode" = "unconditionally" ] ; then
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echo "initialize_home: populating $mode $home_root/$homedirwithouthome from /etc/skel" >&2
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mkdir -p "$home_root/$homedirwithouthome"
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cp -af -T /etc/skel "$home_root/$homedirwithouthome"
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echo "initialize_home: adjusting permissions $mode on $home_root/$homedirwithouthome" >&2
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chown -R "$uid" "$home_root/$homedirwithouthome" &
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waitpids="$!"
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chgrp -R "$gid" "$home_root/$homedirwithouthome" &
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waitpids="$waitpids $!"
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chmod 700 "$home_root/$homedirwithouthome" &
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waitpids="$waitpids $!"
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for waitpid in $waitpids ; do wait "$waitpid" ; done ; waitpids=
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fi
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waitpids=
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homedir_uid=$(stat --format=%u "$home_root/$homedirwithouthome")
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homedir_gid=$(stat --format=%g "$home_root/$homedirwithouthome")
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if [ "$uid" -ne "$homedir_uid" ]; then
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echo "initialize_home: adjusting ownership on $home_root/$homedirwithouthome to $uid" >&2
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find "$home_root/$homedirwithouthome" -uid "$homedir_uid" -print0 | xargs -0 chown "$uid" &
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waitpids="$waitpids $!"
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fi
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if [ "$gid" -ne "$homedir_gid" ]; then
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echo "initialize_home: adjusting groupship on $home_root/$homedirwithouthome to $gid" >&2
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find "$home_root/$homedirwithouthome" -gid "$homedir_gid" -print0 | xargs -0 chgrp "$gid" &
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waitpids="$waitpids $!"
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fi
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for waitpid in $waitpids ; do wait "$waitpid" ; done ; waitpids=
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done
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}
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