core-agent-linux/init/functions
Marek Marczykowski-Górecki d2c28d12a2
Remove dead code
2019-07-05 20:35:31 +02:00

232 rader
6.6 KiB
Bash

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