|
# Zap the root password if debug-tweaks feature is not enabled
|
ROOTFS_POSTPROCESS_COMMAND += '${@bb.utils.contains_any("IMAGE_FEATURES", [ 'debug-tweaks', 'empty-root-password' ], "", "zap_empty_root_password; ",d)}'
|
|
# Allow dropbear/openssh to accept logins from accounts with an empty password string if debug-tweaks or allow-empty-password is enabled
|
ROOTFS_POSTPROCESS_COMMAND += '${@bb.utils.contains_any("IMAGE_FEATURES", [ 'debug-tweaks', 'allow-empty-password' ], "ssh_allow_empty_password; ", "",d)}'
|
|
# Allow dropbear/openssh to accept root logins if debug-tweaks or allow-root-login is enabled
|
ROOTFS_POSTPROCESS_COMMAND += '${@bb.utils.contains_any("IMAGE_FEATURES", [ 'debug-tweaks', 'allow-root-login' ], "ssh_allow_root_login; ", "",d)}'
|
|
# Enable postinst logging if debug-tweaks is enabled
|
ROOTFS_POSTPROCESS_COMMAND += '${@bb.utils.contains_any("IMAGE_FEATURES", [ 'debug-tweaks', 'post-install-logging' ], "postinst_enable_logging; ", "",d)}'
|
|
# Create /etc/timestamp during image construction to give a reasonably sane default time setting
|
ROOTFS_POSTPROCESS_COMMAND += "rootfs_update_timestamp; "
|
|
# Tweak the mount options for rootfs in /etc/fstab if read-only-rootfs is enabled
|
ROOTFS_POSTPROCESS_COMMAND += '${@bb.utils.contains("IMAGE_FEATURES", "read-only-rootfs", "read_only_rootfs_hook; ", "",d)}'
|
|
# We also need to do the same for the kernel boot parameters,
|
# otherwise kernel or initramfs end up mounting the rootfs read/write
|
# (the default) if supported by the underlying storage.
|
#
|
# We do this with :append because the default value might get set later with ?=
|
# and we don't want to disable such a default that by setting a value here.
|
APPEND:append = '${@bb.utils.contains("IMAGE_FEATURES", "read-only-rootfs", " ro", "", d)}'
|
|
# Generates test data file with data store variables expanded in json format
|
ROOTFS_POSTPROCESS_COMMAND += "write_image_test_data; "
|
|
# Write manifest
|
IMAGE_MANIFEST = "${IMGDEPLOYDIR}/${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.manifest"
|
ROOTFS_POSTUNINSTALL_COMMAND =+ "write_image_manifest ; "
|
# Set default postinst log file
|
POSTINST_LOGFILE ?= "${localstatedir}/log/postinstall.log"
|
# Set default target for systemd images
|
SYSTEMD_DEFAULT_TARGET ?= '${@bb.utils.contains_any("IMAGE_FEATURES", [ "x11-base", "weston" ], "graphical.target", "multi-user.target", d)}'
|
ROOTFS_POSTPROCESS_COMMAND += '${@bb.utils.contains("DISTRO_FEATURES", "systemd", "set_systemd_default_target; systemd_create_users;", "", d)}'
|
|
ROOTFS_POSTPROCESS_COMMAND += 'empty_var_volatile;'
|
|
ROOTFS_POSTPROCESS_COMMAND += '${@bb.utils.contains("DISTRO_FEATURES", "overlayfs", "overlayfs_qa_check;", "", d)}'
|
|
inherit image-artifact-names
|
|
# Sort the user and group entries in /etc by ID in order to make the content
|
# deterministic. Package installs are not deterministic, causing the ordering
|
# of entries to change between builds. In case that this isn't desired,
|
# the command can be overridden.
|
#
|
# Note that useradd-staticids.bbclass has to be used to ensure that
|
# the numeric IDs of dynamically created entries remain stable.
|
#
|
# We want this to run as late as possible, in particular after
|
# systemd_sysusers_create and set_user_group. Using :append is not
|
# enough for that, set_user_group is added that way and would end
|
# up running after us.
|
SORT_PASSWD_POSTPROCESS_COMMAND ??= " sort_passwd; "
|
python () {
|
d.appendVar('ROOTFS_POSTPROCESS_COMMAND', '${SORT_PASSWD_POSTPROCESS_COMMAND}')
|
d.appendVar('ROOTFS_POSTPROCESS_COMMAND', 'rootfs_reproducible;')
|
}
|
|
systemd_create_users () {
|
for conffile in ${IMAGE_ROOTFS}/usr/lib/sysusers.d/*.conf; do
|
[ -e $conffile ] || continue
|
grep -v "^#" $conffile | sed -e '/^$/d' | while read type name id comment; do
|
if [ "$type" = "u" ]; then
|
useradd_params="--shell /sbin/nologin"
|
[ "$id" != "-" ] && useradd_params="$useradd_params --uid $id"
|
[ "$comment" != "-" ] && useradd_params="$useradd_params --comment $comment"
|
useradd_params="$useradd_params --system $name"
|
eval useradd --root ${IMAGE_ROOTFS} $useradd_params || true
|
elif [ "$type" = "g" ]; then
|
groupadd_params=""
|
[ "$id" != "-" ] && groupadd_params="$groupadd_params --gid $id"
|
groupadd_params="$groupadd_params --system $name"
|
eval groupadd --root ${IMAGE_ROOTFS} $groupadd_params || true
|
elif [ "$type" = "m" ]; then
|
group=$id
|
if [ ! `grep -q "^${group}:" ${IMAGE_ROOTFS}${sysconfdir}/group` ]; then
|
eval groupadd --root ${IMAGE_ROOTFS} --system $group
|
fi
|
if [ ! `grep -q "^${name}:" ${IMAGE_ROOTFS}${sysconfdir}/passwd` ]; then
|
eval useradd --root ${IMAGE_ROOTFS} --shell /sbin/nologin --system $name
|
fi
|
eval usermod --root ${IMAGE_ROOTFS} -a -G $group $name
|
fi
|
done
|
done
|
}
|
|
#
|
# A hook function to support read-only-rootfs IMAGE_FEATURES
|
#
|
read_only_rootfs_hook () {
|
# Tweak the mount option and fs_passno for rootfs in fstab
|
if [ -f ${IMAGE_ROOTFS}/etc/fstab ]; then
|
sed -i -e '/^[#[:space:]]*\/dev\/root/{s/defaults/ro/;s/\([[:space:]]*[[:digit:]]\)\([[:space:]]*\)[[:digit:]]$/\1\20/}' ${IMAGE_ROOTFS}/etc/fstab
|
fi
|
|
# Tweak the "mount -o remount,rw /" command in busybox-inittab inittab
|
if [ -f ${IMAGE_ROOTFS}/etc/inittab ]; then
|
sed -i 's|/bin/mount -o remount,rw /|/bin/mount -o remount,ro /|' ${IMAGE_ROOTFS}/etc/inittab
|
fi
|
|
# If we're using openssh and the /etc/ssh directory has no pre-generated keys,
|
# we should configure openssh to use the configuration file /etc/ssh/sshd_config_readonly
|
# and the keys under /var/run/ssh.
|
if [ -d ${IMAGE_ROOTFS}/etc/ssh ]; then
|
if [ -e ${IMAGE_ROOTFS}/etc/ssh/ssh_host_rsa_key ]; then
|
echo "SYSCONFDIR=\${SYSCONFDIR:-/etc/ssh}" >> ${IMAGE_ROOTFS}/etc/default/ssh
|
echo "SSHD_OPTS=" >> ${IMAGE_ROOTFS}/etc/default/ssh
|
else
|
echo "SYSCONFDIR=\${SYSCONFDIR:-/var/run/ssh}" >> ${IMAGE_ROOTFS}/etc/default/ssh
|
echo "SSHD_OPTS='-f /etc/ssh/sshd_config_readonly'" >> ${IMAGE_ROOTFS}/etc/default/ssh
|
fi
|
fi
|
|
# Also tweak the key location for dropbear in the same way.
|
if [ -d ${IMAGE_ROOTFS}/etc/dropbear ]; then
|
if [ ! -e ${IMAGE_ROOTFS}/etc/dropbear/dropbear_rsa_host_key ]; then
|
echo "DROPBEAR_RSAKEY_DIR=/var/lib/dropbear" >> ${IMAGE_ROOTFS}/etc/default/dropbear
|
fi
|
fi
|
|
if ${@bb.utils.contains("DISTRO_FEATURES", "sysvinit", "true", "false", d)}; then
|
# Change the value of ROOTFS_READ_ONLY in /etc/default/rcS to yes
|
if [ -e ${IMAGE_ROOTFS}/etc/default/rcS ]; then
|
sed -i 's/ROOTFS_READ_ONLY=no/ROOTFS_READ_ONLY=yes/' ${IMAGE_ROOTFS}/etc/default/rcS
|
fi
|
# Run populate-volatile.sh at rootfs time to set up basic files
|
# and directories to support read-only rootfs.
|
if [ -x ${IMAGE_ROOTFS}/etc/init.d/populate-volatile.sh ]; then
|
${IMAGE_ROOTFS}/etc/init.d/populate-volatile.sh
|
fi
|
fi
|
|
if ${@bb.utils.contains("DISTRO_FEATURES", "systemd", "true", "false", d)}; then
|
# Create machine-id
|
# 20:12 < mezcalero> koen: you have three options: a) run systemd-machine-id-setup at install time, b) have / read-only and an empty file there (for stateless) and c) boot with / writable
|
touch ${IMAGE_ROOTFS}${sysconfdir}/machine-id
|
fi
|
}
|
|
#
|
# This function is intended to disallow empty root password if 'debug-tweaks' is not in IMAGE_FEATURES.
|
#
|
zap_empty_root_password () {
|
if [ -e ${IMAGE_ROOTFS}/etc/shadow ]; then
|
sed -i 's%^root::%root:*:%' ${IMAGE_ROOTFS}/etc/shadow
|
fi
|
if [ -e ${IMAGE_ROOTFS}/etc/passwd ]; then
|
sed -i 's%^root::%root:*:%' ${IMAGE_ROOTFS}/etc/passwd
|
fi
|
}
|
|
#
|
# allow dropbear/openssh to accept logins from accounts with an empty password string
|
#
|
ssh_allow_empty_password () {
|
for config in sshd_config sshd_config_readonly; do
|
if [ -e ${IMAGE_ROOTFS}${sysconfdir}/ssh/$config ]; then
|
sed -i 's/^[#[:space:]]*PermitEmptyPasswords.*/PermitEmptyPasswords yes/' ${IMAGE_ROOTFS}${sysconfdir}/ssh/$config
|
fi
|
done
|
|
if [ -e ${IMAGE_ROOTFS}${sbindir}/dropbear ] ; then
|
if grep -q DROPBEAR_EXTRA_ARGS ${IMAGE_ROOTFS}${sysconfdir}/default/dropbear 2>/dev/null ; then
|
if ! grep -q "DROPBEAR_EXTRA_ARGS=.*-B" ${IMAGE_ROOTFS}${sysconfdir}/default/dropbear ; then
|
sed -i 's/^DROPBEAR_EXTRA_ARGS="*\([^"]*\)"*/DROPBEAR_EXTRA_ARGS="\1 -B"/' ${IMAGE_ROOTFS}${sysconfdir}/default/dropbear
|
fi
|
else
|
printf '\nDROPBEAR_EXTRA_ARGS="-B"\n' >> ${IMAGE_ROOTFS}${sysconfdir}/default/dropbear
|
fi
|
fi
|
|
if [ -d ${IMAGE_ROOTFS}${sysconfdir}/pam.d ] ; then
|
for f in `find ${IMAGE_ROOTFS}${sysconfdir}/pam.d/* -type f -exec test -e {} \; -print`
|
do
|
sed -i 's/nullok_secure/nullok/' $f
|
done
|
fi
|
}
|
|
#
|
# allow dropbear/openssh to accept root logins
|
#
|
ssh_allow_root_login () {
|
for config in sshd_config sshd_config_readonly; do
|
if [ -e ${IMAGE_ROOTFS}${sysconfdir}/ssh/$config ]; then
|
sed -i 's/^[#[:space:]]*PermitRootLogin.*/PermitRootLogin yes/' ${IMAGE_ROOTFS}${sysconfdir}/ssh/$config
|
fi
|
done
|
|
if [ -e ${IMAGE_ROOTFS}${sbindir}/dropbear ] ; then
|
if grep -q DROPBEAR_EXTRA_ARGS ${IMAGE_ROOTFS}${sysconfdir}/default/dropbear 2>/dev/null ; then
|
sed -i '/^DROPBEAR_EXTRA_ARGS=/ s/-w//' ${IMAGE_ROOTFS}${sysconfdir}/default/dropbear
|
fi
|
fi
|
}
|
|
python sort_passwd () {
|
import rootfspostcommands
|
rootfspostcommands.sort_passwd(d.expand('${IMAGE_ROOTFS}${sysconfdir}'))
|
}
|
|
#
|
# Enable postinst logging if debug-tweaks is enabled
|
#
|
postinst_enable_logging () {
|
mkdir -p ${IMAGE_ROOTFS}${sysconfdir}/default
|
echo "POSTINST_LOGGING=1" >> ${IMAGE_ROOTFS}${sysconfdir}/default/postinst
|
echo "LOGFILE=${POSTINST_LOGFILE}" >> ${IMAGE_ROOTFS}${sysconfdir}/default/postinst
|
}
|
|
#
|
# Modify systemd default target
|
#
|
set_systemd_default_target () {
|
if [ -d ${IMAGE_ROOTFS}${sysconfdir}/systemd/system -a -e ${IMAGE_ROOTFS}${systemd_system_unitdir}/${SYSTEMD_DEFAULT_TARGET} ]; then
|
ln -sf ${systemd_system_unitdir}/${SYSTEMD_DEFAULT_TARGET} ${IMAGE_ROOTFS}${sysconfdir}/systemd/system/default.target
|
fi
|
}
|
|
# If /var/volatile is not empty, we have seen problems where programs such as the
|
# journal make assumptions based on the contents of /var/volatile. The journal
|
# would then write to /var/volatile before it was mounted, thus hiding the
|
# items previously written.
|
#
|
# This change is to attempt to fix those types of issues in a way that doesn't
|
# affect users that may not be using /var/volatile.
|
empty_var_volatile () {
|
if [ -e ${IMAGE_ROOTFS}/etc/fstab ]; then
|
match=`awk '$1 !~ "#" && $2 ~ /\/var\/volatile/{print $2}' ${IMAGE_ROOTFS}/etc/fstab 2> /dev/null`
|
if [ -n "$match" ]; then
|
find ${IMAGE_ROOTFS}/var/volatile -mindepth 1 -delete
|
fi
|
fi
|
}
|
|
# Turn any symbolic /sbin/init link into a file
|
remove_init_link () {
|
if [ -h ${IMAGE_ROOTFS}/sbin/init ]; then
|
LINKFILE=${IMAGE_ROOTFS}`readlink ${IMAGE_ROOTFS}/sbin/init`
|
rm ${IMAGE_ROOTFS}/sbin/init
|
cp $LINKFILE ${IMAGE_ROOTFS}/sbin/init
|
fi
|
}
|
|
make_zimage_symlink_relative () {
|
if [ -L ${IMAGE_ROOTFS}/boot/zImage ]; then
|
(cd ${IMAGE_ROOTFS}/boot/ && for i in `ls zImage-* | sort`; do ln -sf $i zImage; done)
|
fi
|
}
|
|
python write_image_manifest () {
|
from oe.rootfs import image_list_installed_packages
|
from oe.utils import format_pkg_list
|
|
deploy_dir = d.getVar('IMGDEPLOYDIR')
|
link_name = d.getVar('IMAGE_LINK_NAME')
|
manifest_name = d.getVar('IMAGE_MANIFEST')
|
|
if not manifest_name:
|
return
|
|
pkgs = image_list_installed_packages(d)
|
with open(manifest_name, 'w+') as image_manifest:
|
image_manifest.write(format_pkg_list(pkgs, "ver"))
|
|
if os.path.exists(manifest_name) and link_name:
|
manifest_link = deploy_dir + "/" + link_name + ".manifest"
|
if os.path.lexists(manifest_link):
|
os.remove(manifest_link)
|
os.symlink(os.path.basename(manifest_name), manifest_link)
|
}
|
|
# Can be used to create /etc/timestamp during image construction to give a reasonably
|
# sane default time setting
|
rootfs_update_timestamp () {
|
if [ "${REPRODUCIBLE_TIMESTAMP_ROOTFS}" != "" ]; then
|
# Convert UTC into %4Y%2m%2d%2H%2M%2S
|
sformatted=`date -u -d @${REPRODUCIBLE_TIMESTAMP_ROOTFS} +%4Y%2m%2d%2H%2M%2S`
|
else
|
sformatted=`date -u +%4Y%2m%2d%2H%2M%2S`
|
fi
|
echo $sformatted > ${IMAGE_ROOTFS}/etc/timestamp
|
bbnote "rootfs_update_timestamp: set /etc/timestamp to $sformatted"
|
}
|
|
# Prevent X from being started
|
rootfs_no_x_startup () {
|
if [ -f ${IMAGE_ROOTFS}/etc/init.d/xserver-nodm ]; then
|
chmod a-x ${IMAGE_ROOTFS}/etc/init.d/xserver-nodm
|
fi
|
}
|
|
rootfs_trim_schemas () {
|
for schema in ${IMAGE_ROOTFS}/etc/gconf/schemas/*.schemas
|
do
|
# Need this in case no files exist
|
if [ -e $schema ]; then
|
oe-trim-schemas $schema > $schema.new
|
mv $schema.new $schema
|
fi
|
done
|
}
|
|
rootfs_check_host_user_contaminated () {
|
contaminated="${WORKDIR}/host-user-contaminated.txt"
|
HOST_USER_UID="$(PSEUDO_UNLOAD=1 id -u)"
|
HOST_USER_GID="$(PSEUDO_UNLOAD=1 id -g)"
|
|
find "${IMAGE_ROOTFS}" -path "${IMAGE_ROOTFS}/home" -prune -o \
|
-user "$HOST_USER_UID" -print -o -group "$HOST_USER_GID" -print >"$contaminated"
|
|
sed -e "s,${IMAGE_ROOTFS},," $contaminated | while read line; do
|
bbwarn "Path in the rootfs is owned by the same user or group as the user running bitbake:" $line `ls -lan ${IMAGE_ROOTFS}/$line`
|
done
|
|
if [ -s "$contaminated" ]; then
|
bbwarn "/etc/passwd:" `cat ${IMAGE_ROOTFS}/etc/passwd`
|
bbwarn "/etc/group:" `cat ${IMAGE_ROOTFS}/etc/group`
|
fi
|
}
|
|
# Make any absolute links in a sysroot relative
|
rootfs_sysroot_relativelinks () {
|
sysroot-relativelinks.py ${SDK_OUTPUT}/${SDKTARGETSYSROOT}
|
}
|
|
# Generated test data json file
|
python write_image_test_data() {
|
from oe.data import export2json
|
|
deploy_dir = d.getVar('IMGDEPLOYDIR')
|
link_name = d.getVar('IMAGE_LINK_NAME')
|
testdata_name = os.path.join(deploy_dir, "%s.testdata.json" % d.getVar('IMAGE_NAME'))
|
|
searchString = "%s/"%(d.getVar("TOPDIR")).replace("//","/")
|
export2json(d, testdata_name, searchString=searchString, replaceString="")
|
|
if os.path.exists(testdata_name) and link_name:
|
testdata_link = os.path.join(deploy_dir, "%s.testdata.json" % link_name)
|
if os.path.lexists(testdata_link):
|
os.remove(testdata_link)
|
os.symlink(os.path.basename(testdata_name), testdata_link)
|
}
|
write_image_test_data[vardepsexclude] += "TOPDIR"
|
|
# Check for unsatisfied recommendations (RRECOMMENDS)
|
python rootfs_log_check_recommends() {
|
log_path = d.expand("${T}/log.do_rootfs")
|
with open(log_path, 'r') as log:
|
for line in log:
|
if 'log_check' in line:
|
continue
|
|
if 'unsatisfied recommendation for' in line:
|
bb.warn('[log_check] %s: %s' % (d.getVar('PN'), line))
|
}
|
|
# Perform any additional adjustments needed to make rootf binary reproducible
|
rootfs_reproducible () {
|
if [ "${REPRODUCIBLE_TIMESTAMP_ROOTFS}" != "" ]; then
|
# Convert UTC into %4Y%2m%2d%2H%2M%2S
|
sformatted=`date -u -d @${REPRODUCIBLE_TIMESTAMP_ROOTFS} +%4Y%2m%2d%2H%2M%2S`
|
echo $sformatted > ${IMAGE_ROOTFS}/etc/version
|
bbnote "rootfs_reproducible: set /etc/version to $sformatted"
|
|
if [ -d ${IMAGE_ROOTFS}${sysconfdir}/gconf ]; then
|
find ${IMAGE_ROOTFS}${sysconfdir}/gconf -name '%gconf.xml' -print0 | xargs -0r \
|
sed -i -e 's@\bmtime="[0-9][0-9]*"@mtime="'${REPRODUCIBLE_TIMESTAMP_ROOTFS}'"@g'
|
fi
|
fi
|
}
|
|
python overlayfs_qa_check() {
|
from oe.overlayfs import mountUnitName
|
|
# this is a dumb check for unit existence, not its validity
|
overlayMountPoints = d.getVarFlags("OVERLAYFS_MOUNT_POINT")
|
imagepath = d.getVar("IMAGE_ROOTFS")
|
searchpaths = [oe.path.join(imagepath, d.getVar("sysconfdir"), "systemd", "system"),
|
oe.path.join(imagepath, d.getVar("systemd_system_unitdir"))]
|
|
allUnitExist = True;
|
for mountPoint in overlayMountPoints:
|
path = d.getVarFlag('OVERLAYFS_MOUNT_POINT', mountPoint)
|
unit = mountUnitName(path)
|
|
if not any(os.path.isfile(oe.path.join(dirpath, unit))
|
for dirpath in searchpaths):
|
bb.warn('Unit name %s not found in systemd unit directories' % unit)
|
allUnitExist = False;
|
|
if not allUnitExist:
|
bb.fatal('Not all mount units are installed by the BSP')
|
}
|
