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android_system_core/fs_mgr/tests/adb-remount-test.sh

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#! /bin/bash
#
# Divided into four section:
#
## USAGE
## Helper Variables
## Helper Functions
## MAINLINE
##
## USAGE
##
USAGE="USAGE: `basename ${0}` [--help] [--serial <SerialNumber>] [--color]
adb remount tests
--help This help
--serial Specify device (must if multiple are present)
--color Dress output with highlighting colors
Conditions:
- Must be a userdebug build.
- Must be in adb mode.
- Also tests overlayfs
- Kernel must have overlayfs enabled and patched to support override_creds.
- Must have either erofs, squashfs, ext4-dedupe or full partitions.
- Minimum expectation system and vender are overlayfs covered partitions.
"
##
## Helper Variables
##
SPACE=" "
# A _real_ embedded tab character
TAB="`echo | tr '\n' '\t'`"
# A _real_ embedded escape character
ESCAPE="`echo | tr '\n' '\033'`"
# A _real_ embedded carriage return character
CR="`echo | tr '\n' '\r'`"
GREEN="${ESCAPE}[38;5;40m"
RED="${ESCAPE}[38;5;196m"
ORANGE="${ESCAPE}[38;5;255:165:0m"
BLUE="${ESCAPE}[35m"
NORMAL="${ESCAPE}[0m"
TMPDIR=${TMPDIR:-/tmp}
##
## Helper Functions
##
[ "USAGE: inFastboot
Returns: true if device is in fastboot mode" ]
inFastboot() {
fastboot devices |
if [ -n "${ANDROID_SERIAL}" ]; then
grep "^${ANDROID_SERIAL}[${SPACE}${TAB}]" > /dev/null
else
wc -l | grep '^1$' >/dev/null
fi
}
[ "USAGE: inAdb
Returns: true if device is in adb mode" ]
inAdb() {
adb devices |
grep -v -e 'List of devices attached' -e '^$' |
if [ -n "${ANDROID_SERIAL}" ]; then
grep "^${ANDROID_SERIAL}[${SPACE}${TAB}]" > /dev/null
else
wc -l | grep '^1$' >/dev/null
fi
}
[ "USAGE: adb_sh <commands> </dev/stdin >/dev/stdout 2>/dev/stderr
Returns: true if the command succeeded" ]
adb_sh() {
args=
for i in "${@}"; do
[ -z "${args}" ] || args="${args} "
if [ X"${i}" != X"${i#\'}" ]; then
args="${args}${i}"
elif [ X"${i}" != X"${i#* }" ]; then
args="${args}'${i}'"
elif [ X"${i}" != X"${i#*${TAB}}" ]; then
args="${args}'${i}'"
else
args="${args}${i}"
fi
done
adb shell "${args}"
}
[ "USAGE: adb_date >/dev/stdout
Returns: report device epoch time (suitable for logcat -t)" ]
adb_date() {
adb_sh date +%s.%N </dev/null
}
[ "USAGE: adb_logcat [arguments] >/dev/stdout
Returns: the logcat output" ]
adb_logcat() {
echo "${RED}[ INFO ]${NORMAL} logcat ${@}" >&2 &&
adb logcat "${@}" </dev/null |
grep -v 'logd : logdr: UID=' |
sed -e '${/------- beginning of kernel/d}' -e 's/^[0-1][0-9]-[0-3][0-9] //'
}
[ "USAGE: get_property <prop>
Returns the property value" ]
get_property() {
adb_sh getprop ${1} </dev/null
}
[ "USAGE: isDebuggable
Returns: true if device is (likely) a debug build" ]
isDebuggable() {
if inAdb && [ 1 != "`get_property ro.debuggable`" ]; then
false
fi
}
[ "USAGE: adb_su <commands> </dev/stdin >/dev/stdout 2>/dev/stderr
Returns: true if the command running as root succeeded" ]
adb_su() {
adb_sh su root "${@}"
}
[ "USAGE: adb_cat <file> >stdout
Returns: content of file to stdout with carriage returns skipped,
true of the file exists" ]
adb_cat() {
OUTPUT="`adb_sh cat ${1} </dev/null 2>&1`"
retval=${?}
echo "${OUTPUT}" | tr -d '\r'
return ${retval}
}
[ "USAGE: adb_reboot
Returns: true if the reboot command succeeded" ]
adb_reboot() {
adb reboot remount-test || true
sleep 2
}
[ "USAGE: format_duration [<seconds>|<seconds>s|<minutes>m|<hours>h|<days>d]
human readable output whole seconds, whole minutes or mm:ss" ]
format_duration() {
if [ -z "${1}" ]; then
echo unknown
return
fi
duration="${1}"
if [ X"${duration}" != X"${duration%s}" ]; then
duration=${duration%s}
elif [ X"${duration}" != X"${duration%m}" ]; then
duration=`expr ${duration%m} \* 60`
elif [ X"${duration}" != X"${duration%h}" ]; then
duration=`expr ${duration%h} \* 3600`
elif [ X"${duration}" != X"${duration%d}" ]; then
duration=`expr ${duration%d} \* 86400`
fi
seconds=`expr ${duration} % 60`
minutes=`expr \( ${duration} / 60 \) % 60`
hours=`expr ${duration} / 3600`
if [ 0 -eq ${minutes} -a 0 -eq ${hours} ]; then
if [ 1 -eq ${duration} ]; then
echo 1 second
return
fi
echo ${duration} seconds
return
elif [ 60 -eq ${duration} ]; then
echo 1 minute
return
elif [ 0 -eq ${seconds} -a 0 -eq ${hours} ]; then
echo ${minutes} minutes
return
fi
if [ 0 -eq ${hours} ]; then
echo ${minutes}:`expr ${seconds} / 10``expr ${seconds} % 10`
return
fi
echo ${hours}:`expr ${minutes} / 10``expr ${minutes} % 10`:`expr ${seconds} / 10``expr ${seconds} % 10`
}
[ "USAGE: adb_wait [timeout]
Returns: waits until the device has returned for adb or optional timeout" ]
adb_wait() {
if [ -n "${1}" ]; then
echo -n ". . . waiting `format_duration ${1}`" ${ANDROID_SERIAL} ${USB_ADDRESS} "${CR}"
timeout --preserve-status --signal=KILL ${1} adb wait-for-device
retval=${?}
echo -n " ${CR}"
return ${retval}
else
adb wait-for-device
fi
}
[ "USAGE: usb_status > stdout
If adb_wait failed, check if device is in fastboot mode and report status
Returns: \"(USB stack borken?)\", \"(In fastboot mode)\" or \"(in adb mode)\"" ]
usb_status() {
if inFastboot; then
echo "(In fastboot mode)"
elif inAdb; then
echo "(In adb mode)"
else
echo "(USB stack borken?)"
fi
}
[ "USAGE: fastboot_wait [timeout]
Returns: waits until the device has returned for fastboot or optional timeout" ]
fastboot_wait() {
# fastboot has no wait-for-device, but it does an automatic
# wait and requires (even a nonsensical) command to do so.
if [ -n "${1}" ]; then
echo -n ". . . waiting `format_duration ${1}`" ${ANDROID_SERIAL} ${USB_ADDRESS} "${CR}"
timeout --preserve-status --signal=KILL ${1} fastboot wait-for-device >/dev/null 2>/dev/null
retval=${?}
echo -n " ${CR}"
( exit ${retval} )
else
fastboot wait-for-device >/dev/null 2>/dev/null
fi ||
inFastboot
}
[ "USAGE: adb_root
NB: This can be flakey on devices due to USB state
Returns: true if device in root state" ]
adb_root() {
[ `adb_sh echo '${USER}'` != root ] || return 0
adb root >/dev/null </dev/null 2>/dev/null
sleep 2
adb_wait 2m &&
[ `adb_sh echo '${USER}'` = root ]
}
[ "USAGE: adb_unroot
NB: This can be flakey on devices due to USB state
Returns: true if device in un root state" ]
adb_unroot() {
[ `adb_sh echo '${USER}'` = root ] || return 0
adb unroot >/dev/null </dev/null 2>/dev/null
sleep 2
adb_wait 2m &&
[ `adb_sh echo '${USER}'` != root ]
}
[ "USAGE: fastboot_getvar var expected
Returns: true if var output matches expected" ]
fastboot_getvar() {
O=`fastboot getvar ${1} 2>&1`
err=${?}
O="${O#< waiting for * >?}"
O="${O%%?Finished. Total time: *}"
if [ 0 -ne ${err} ]; then
echo ${O} >&2
false
return
fi
if [ "${O}" != "${O#*FAILED}" ]; then
O="${1}: <empty>"
fi
if [ -n "${2}" -a "${1}: ${2}" != "${O}" ]; then
echo "${2} != ${O}" >&2
false
return
fi
echo ${O} >&2
}
[ "USAGE: restore
Do nothing: should be redefined when necessary. Called after cleanup.
Returns: reverses configurations" ]
restore() {
true
}
[ "USAGE: cleanup
Do nothing: should be redefined when necessary
Returns: cleans up any latent resources" ]
cleanup() {
true
}
[ "USAGE: die [-d|-t <epoch>] [message] >/dev/stderr
If -d, or -t <epoch> argument is supplied, dump logcat.
Returns: exit failure, report status" ]
die() {
if [ X"-d" = X"${1}" ]; then
adb_logcat -b all -v nsec -d >&2
shift
elif [ X"-t" = X"${1}" ]; then
if [ -n "${2}" ]; then
adb_logcat -b all -v nsec -t ${2} >&2
else
adb_logcat -b all -v nsec -d >&2
fi
shift 2
fi
echo "${RED}[ FAILED ]${NORMAL} ${@}" >&2
cleanup
restore
exit 1
}
[ "USAGE: EXPECT_EQ <lval> <rval> [message]
Returns true if (regex) lval matches rval" ]
EXPECT_EQ() {
lval="${1}"
rval="${2}"
shift 2
if ! ( echo X"${rval}" | grep '^X'"${lval}"'$' >/dev/null 2>/dev/null ); then
if [ `echo ${lval}${rval}${*} | wc -c` -gt 50 -o "${rval}" != "${rval%
*}" ]; then
echo "ERROR: expected \"${lval}\"" >&2
echo " got \"${rval}\"" |
sed ': again
N
s/\(\n\)\([^ ]\)/\1 \2/
t again' >&2
if [ -n "${*}" ] ; then
echo " ${*}" >&2
fi
else
echo "ERROR: expected \"${lval}\" got \"${rval}\" ${*}" >&2
fi
return 1
fi
if [ -n "${*}" ] ; then
if [ X"${lval}" != X"${rval}" ]; then
if [ `echo ${lval}${rval}${*} | wc -c` -gt 60 -o "${rval}" != "${rval% *}" ]; then
echo "INFO: ok \"${lval}\"" >&2
echo " = \"${rval}\"" |
sed ': again
N
s/\(\n\)\([^ ]\)/\1 \2/
t again' >&2
if [ -n "${*}" ] ; then
echo " ${*}" >&2
fi
else
echo "INFO: ok \"${lval}\" = \"${rval}\" ${*}" >&2
fi
else
echo "INFO: ok \"${lval}\" ${*}" >&2
fi
fi
return 0
}
[ "USAGE: check_eq <lval> <rval> [message]
Exits if (regex) lval mismatches rval" ]
check_eq() {
left="${1}"
right="${2}"
shift 2
EXPECT_EQ "${left}" "${right}" ||
die "${@}"
}
[ "USAGE: skip_administrative_mounts [data] < /proc/mounts
Filters out all administrative (eg: sysfs) mounts uninteresting to the test" ]
skip_administrative_mounts() {
if [ "data" = "${1}" ]; then
grep -v " /data "
else
cat -
fi |
grep -v \
-e "^\(overlay\|tmpfs\|none\|sysfs\|proc\|selinuxfs\|debugfs\) " \
-e "^\(bpf\|cg2_bpf\|pstore\|tracefs\|adb\|mtp\|ptp\|devpts\) " \
-e "^\(/data/media\|/dev/block/loop[0-9]*\) " \
-e "^rootfs / rootfs rw," \
-e " /\(cache\|mnt/scratch\|mnt/vendor/persist\|persist\|metadata\) "
}
[ "USAGE: skip_unrelated_mounts < /proc/mounts
or output from df
Filters out all apex and vendor override administrative overlay mounts
uninteresting to the test" ]
skip_unrelated_mounts() {
grep -v "^overlay.* /\(apex\|bionic\|system\|vendor\)/[^ ]" |
grep -v "[%] /\(apex\|bionic\|system\|vendor\)/[^ ][^ ]*$"
}
##
## MAINLINE
##
OPTIONS=`getopt --alternative --unquoted --longoptions help,serial:,colour,color,no-colour,no-color -- "?hs:" ${*}` ||
( echo "${USAGE}" >&2 ; false ) ||
die "getopt failure"
set -- ${OPTIONS}
color=false
while [ ${#} -gt 0 ]; do
case ${1} in
-h | --help | -\?)
echo "${USAGE}" >&2
exit 0
;;
-s | --serial)
export ANDROID_SERIAL=${2}
shift
;;
--color | --colour)
color=true
;;
--no-color | --no-colour)
color=false
;;
--)
shift
break
;;
-*)
echo "${USAGE}" >&2
die "${0}: error unknown option ${1}"
;;
*)
break
;;
esac
shift
done
if ! ${color}; then
GREEN=""
RED=""
ORANGE=""
BLUE=""
NORMAL=""
fi
inFastboot && die "device in fastboot mode"
if ! inAdb; then
echo "${ORANGE}[ WARNING ]${NORMAL} device not in adb mode"
adb_wait 2m
fi
inAdb || die "specified device not in adb mode"
isDebuggable || die "device not a debug build"
enforcing=true
if ! adb_su getenforce </dev/null | grep 'Enforcing' >/dev/null; then
echo "${ORANGE}[ WARNING ]${NORMAL} device does not have sepolicy in enforcing mode"
enforcing=false
fi
# Do something.
D=`get_property ro.serialno`
[ -n "${D}" ] || D=`get_property ro.boot.serialno`
[ -z "${D}" ] || ANDROID_SERIAL=${D}
USB_SERIAL=
[ -z "${ANDROID_SERIAL}" ] || USB_SERIAL=`find /sys/devices -name serial |
grep usb |
xargs grep -l ${ANDROID_SERIAL}`
USB_ADDRESS=
if [ -n "${USB_SERIAL}" ]; then
USB_ADDRESS=${USB_SERIAL%/serial}
USB_ADDRESS=usb${USB_ADDRESS##*/}
fi
[ -z "${ANDROID_SERIAL}${USB_ADDRESS}" ] ||
echo "${BLUE}[ INFO ]${NORMAL}" ${ANDROID_SERIAL} ${USB_ADDRESS} >&2
BUILD_DESCRIPTION=`get_property ro.build.description`
[ -z "${BUILD_DESCRIPTION}" ] ||
echo "${BLUE}[ INFO ]${NORMAL} ${BUILD_DESCRIPTION}" >&2
# Report existing partition sizes
adb_sh ls -l /dev/block/by-name/ </dev/null 2>/dev/null |
sed -n 's@.* \([^ ]*\) -> /dev/block/\([^ ]*\)$@\1 \2@p' |
while read name device; do
case ${name} in
system_[ab] | system | vendor_[ab] | vendor | super | cache)
case ${device} in
sd*)
device=${device%%[0-9]*}/${device}
;;
esac
size=`adb_su cat /sys/block/${device}/size 2>/dev/null </dev/null` &&
size=`expr ${size} / 2` &&
echo "${BLUE}[ INFO ]${NORMAL} partition ${name} device ${device} size ${size}K" >&2
;;
esac
done
# Can we test remount -R command?
overlayfs_supported=true
if [ "orange" = "`get_property ro.boot.verifiedbootstate`" -a \
"2" = "`get_property partition.system.verified`" ]; then
restore() {
${overlayfs_supported} || return 0
echo "${GREEN}[ INFO ]${NORMAL} restoring verity" >&2
inFastboot &&
fastboot reboot &&
adb_wait 2m
adb_root &&
adb enable-verity &&
adb_reboot &&
adb_wait 2m
}
fi
echo "${GREEN}[ RUN ]${NORMAL} Testing kernel support for overlayfs" >&2
adb_wait || die "wait for device failed"
adb_sh ls -d /sys/module/overlay </dev/null >/dev/null 2>/dev/null ||
adb_sh grep "nodev${TAB}overlay" /proc/filesystems </dev/null >/dev/null 2>/dev/null &&
echo "${GREEN}[ OK ]${NORMAL} overlay module present" >&2 ||
(
echo "${ORANGE}[ WARNING ]${NORMAL} overlay module not present" >&2 &&
false
) ||
overlayfs_supported=false
if ${overlayfs_supported}; then
case `adb_sh uname -r </dev/null` in
4.[6789].* | 4.[1-9][0-9]* | [56789].*)
adb_su ls /sys/module/overlay/parameters/override_creds </dev/null >/dev/null &&
echo "${GREEN}[ OK ]${NORMAL} overlay module supports override_creds" >&2 ||
(
echo "${ORANGE}[ WARNING ]${NORMAL} overlay module does not support override_creds" >&2 &&
false
) ||
overlayfs_supported=false
;;
*)
echo "${GREEN}[ OK ]${NORMAL} overlay module uses callers creds" >&2
;;
esac
fi
adb_root ||
die "initial setup"
echo "${GREEN}[ RUN ]${NORMAL} Checking current overlayfs status" >&2
# We can not universally use adb enable-verity to ensure device is
# in a overlayfs disabled state since it can prevent reboot on
# devices that remount the physical content rather than overlayfs.
# So lets do our best to surgically wipe the overlayfs state without
# having to go through enable-verity transition.
reboot=false
OVERLAYFS_BACKING="cache mnt/scratch"
for d in ${OVERLAYFS_BACKING}; do
if adb_sh ls -d /${d}/overlay </dev/null >/dev/null 2>/dev/null; then
echo "${ORANGE}[ WARNING ]${NORMAL} /${d}/overlay is setup, surgically wiping" >&2
adb_sh rm -rf /${d}/overlay </dev/null ||
die "/${d}/overlay wipe"
reboot=true
fi
done
if ${reboot}; then
echo "${ORANGE}[ WARNING ]${NORMAL} rebooting before test" >&2
adb_reboot &&
adb_wait 2m ||
die "lost device after reboot after wipe `usb_status`"
adb_root ||
die "lost device after elevation to root after wipe `usb_status`"
fi
D=`adb_sh df -k </dev/null` &&
H=`echo "${D}" | head -1` &&
D=`echo "${D}" | grep -v " /vendor/..*$" | grep "^overlay "` &&
echo "${H}" &&
echo "${D}" &&
echo "${ORANGE}[ WARNING ]${NORMAL} overlays present before setup" >&2 ||
echo "${GREEN}[ OK ]${NORMAL} no overlay present before setup" >&2
overlayfs_needed=true
D=`adb_sh cat /proc/mounts </dev/null |
skip_administrative_mounts data`
if echo "${D}" | grep /dev/root >/dev/null; then
D=`echo / /
echo "${D}" | grep -v /dev/root`
fi
D=`echo "${D}" | cut -s -d' ' -f1 | sort -u`
no_dedupe=true
for d in ${D}; do
adb_sh tune2fs -l $d 2>&1 |
grep "Filesystem features:.*shared_blocks" >/dev/null &&
no_dedupe=false
done
D=`adb_sh df -k ${D} </dev/null |
sed 's@\([%] /\)\(apex\|bionic\|system\|vendor\)/[^ ][^ ]*$@\1@'`
echo "${D}"
if [ X"${D}" = X"${D##* 100[%] }" ] && ${no_dedupe} ; then
overlayfs_needed=false
elif ! ${overlayfs_supported}; then
die "need overlayfs, but do not have it"
fi
echo "${GREEN}[ RUN ]${NORMAL} disable verity" >&2
T=`adb_date`
H=`adb disable-verity 2>&1`
err=${?}
L=
D="${H%?Now reboot your device for settings to take effect*}"
if [ X"${D}" != X"${D##*[Uu]sing overlayfs}" ]; then
echo "${GREEN}[ OK ]${NORMAL} using overlayfs" >&2
fi
if [ ${err} != 0 ]; then
echo "${H}"
( [ -n "${L}" ] && echo "${L}" && false ) ||
die -t "${T}" "disable-verity"
fi
rebooted=false
if [ X"${D}" != X"${H}" ]; then
echo "${H}"
if [ X"${D}" != X"${D##*setup failed}" ]; then
echo "${ORANGE}[ WARNING ]${NORMAL} overlayfs setup whined" >&2
fi
D=`adb_sh df -k </dev/null` &&
H=`echo "${D}" | head -1` &&
D=`echo "${D}" | grep -v " /vendor/..*$" | grep "^overlay " || true` &&
[ -z "${D}" ] ||
( echo "${H}" && echo "${D}" && false ) ||
die -t ${T} "overlay takeover unexpected at this phase"
echo "${GREEN}[ INFO ]${NORMAL} rebooting as requested" >&2
L=`adb_logcat -b all -v nsec -t ${T} 2>&1`
adb_reboot &&
adb_wait 2m ||
die "lost device after reboot requested `usb_status`"
adb_root ||
die "lost device after elevation to root `usb_status`"
rebooted=true
# re-disable verity to see the setup remarks expected
T=`adb_date`
H=`adb disable-verity 2>&1`
err=${?}
D="${H%?Now reboot your device for settings to take effect*}"
if [ X"${D}" != X"${D##*[Uu]sing overlayfs}" ]; then
echo "${GREEN}[ OK ]${NORMAL} using overlayfs" >&2
fi
if [ ${err} != 0 ]; then
T=
fi
fi
if ${overlayfs_supported} && ${overlayfs_needed} && [ X"${D}" != X"${D##*setup failed}" ]; then
echo "${D}"
( [ -n "${L}" ] && echo "${L}" && false ) ||
die -t "${T}" "setup for overlay"
fi
if [ X"${D}" != X"${D##*Successfully disabled verity}" ]; then
echo "${H}"
D=`adb_sh df -k </dev/null` &&
H=`echo "${D}" | head -1` &&
D=`echo "${D}" | grep -v " /vendor/..*$" | grep "^overlay " || true` &&
[ -z "${D}" ] ||
( echo "${H}" && echo "${D}" && false ) ||
( [ -n "${L}" ] && echo "${L}" && false ) ||
die -t "${T}" "overlay takeover unexpected"
[ -n "${L}" ] && echo "${L}"
die -t "${T}" "unexpected report of verity being disabled a second time"
elif ${rebooted}; then
echo "${GREEN}[ OK ]${NORMAL} verity already disabled" >&2
else
echo "${ORANGE}[ WARNING ]${NORMAL} verity already disabled" >&2
fi
echo "${GREEN}[ RUN ]${NORMAL} remount" >&2
D=`adb remount 2>&1`
ret=${?}
echo "${D}"
[ ${ret} != 0 ] ||
[ X"${D}" = X"${D##*remount failed}" ] ||
( [ -n "${L}" ] && echo "${L}" && false ) ||
die -t "${T}" "adb remount failed"
D=`adb_sh df -k </dev/null` &&
H=`echo "${D}" | head -1` &&
D=`echo "${D}" | skip_unrelated_mounts | grep "^overlay "` ||
( [ -n "${L}" ] && echo "${L}" && false )
ret=${?}
uses_dynamic_scratch=false
scratch_partition=
if ${overlayfs_needed}; then
if [ ${ret} != 0 ]; then
die -t ${T} "overlay takeover failed"
fi
echo "${D}" | grep "^overlay .* /system\$" >/dev/null ||
echo "${ORANGE}[ WARNING ]${NORMAL} overlay takeover not complete" >&2
scratch_partition=scratch
if echo "${D}" | grep " /mnt/scratch" >/dev/null; then
echo "${BLUE}[ INFO ]${NORMAL} using ${scratch_partition} dynamic partition for overrides" >&2
fi
M=`adb_sh cat /proc/mounts </dev/null |
sed -n 's@\([^ ]*\) /mnt/scratch \([^ ]*\) .*@\2 on \1@p'`
[ -n "${M}" ] &&
echo "${BLUE}[ INFO ]${NORMAL} scratch filesystem ${M}"
uses_dynamic_scratch=true
if [ "${M}" != "${M##*/dev/block/by-name/}" ]; then
uses_dynamic_scratch=false
scratch_partition="${M##*/dev/block/by-name/}"
fi
scratch_size=`adb_sh df -k /mnt/scratch </dev/null 2>/dev/null |
while read device kblocks used available use mounted on; do
if [ "/mnt/scratch" = "\${mounted}" ]; then
echo \${kblocks}
fi
done` &&
[ -n "${scratch_size}" ] ||
die "scratch size"
echo "${BLUE}[ INFO ]${NORMAL} scratch size ${scratch_size}KB" >&2
for d in ${OVERLAYFS_BACKING}; do
if adb_sh ls -d /${d}/overlay/system/upper </dev/null >/dev/null 2>/dev/null; then
echo "${BLUE}[ INFO ]${NORMAL} /${d}/overlay is setup" >&2
fi
done
echo "${H}" &&
echo "${D}" &&
echo "${D}" | grep "^overlay .* /system\$" >/dev/null ||
die "overlay takeover after remount"
!(adb_sh grep "^overlay " /proc/mounts </dev/null |
skip_unrelated_mounts |
grep " overlay ro,") ||
die "remount overlayfs missed a spot (ro)"
D=`adb_sh grep " rw," /proc/mounts </dev/null |
skip_administrative_mounts data`
if echo "${D}" | grep /dev/root >/dev/null; then
D=`echo / /
echo "${D}" | grep -v /dev/root`
fi
D=`echo "${D}" | cut -s -d' ' -f1 | sort -u`
bad_rw=false
for d in ${D}; do
if adb_sh tune2fs -l $d 2>&1 |
grep "Filesystem features:.*shared_blocks" >/dev/null; then
bad_rw=true
else
d=`adb_sh df -k ${D} </dev/null |
sed 's@\([%] /\)\(apex\|bionic\|system\|vendor\)/[^ ][^ ]*$@\1@'`
[ X"${d}" = X"${d##* 100[%] }" ] ||
bad_rw=true
fi
done
[ -z "${D}" ] ||
D=`adb_sh df -k ${D} </dev/null |
sed -e 's@\([%] /\)\(apex\|bionic\|system\|vendor\)/[^ ][^ ]*$@\1@' \
-e 's/^Filesystem /Filesystem (rw) /'`
[ -z "${D}" ] || echo "${D}"
${bad_rw} && die "remount overlayfs missed a spot (rw)"
else
if [ ${ret} = 0 ]; then
die -t ${T} "unexpected overlay takeover"
fi
fi
# Check something.
echo "${GREEN}[ RUN ]${NORMAL} push content to /system and /vendor" >&2
A="Hello World! $(date)"
echo "${A}" | adb_sh cat - ">/system/hello"
echo "${A}" | adb_sh cat - ">/vendor/hello"
B="`adb_cat /system/hello`" ||
die "sytem hello"
check_eq "${A}" "${B}" /system before reboot
B="`adb_cat /vendor/hello`" ||
die "vendor hello"
check_eq "${A}" "${B}" /vendor before reboot
# Download libc.so, append some gargage, push back, and check if the file
# is updated.
tempdir="`mktemp -d`"
cleanup() {
rm -rf ${tempdir}
}
adb pull /system/lib/bootstrap/libc.so ${tempdir} >/dev/null ||
die "pull libc.so from device"
garbage="`hexdump -n 16 -e '4/4 "%08X" 1 "\n"' /dev/random`"
echo ${garbage} >> ${tempdir}/libc.so
adb push ${tempdir}/libc.so /system/lib/bootstrap/libc.so >/dev/null ||
die "push libc.so to device"
adb pull /system/lib/bootstrap/libc.so ${tempdir}/libc.so.fromdevice >/dev/null ||
die "pull libc.so from device"
diff ${tempdir}/libc.so ${tempdir}/libc.so.fromdevice > /dev/null ||
die "libc.so differ"
echo "${GREEN}[ RUN ]${NORMAL} reboot to confirm content persistent" >&2
adb_reboot &&
adb_wait 2m ||
die "reboot after override content added failed"
if ${overlayfs_needed}; then
D=`adb_su df -k </dev/null` &&
H=`echo "${D}" | head -1` &&
D=`echo "${D}" | grep -v " /vendor/..*$" | grep "^overlay "` ||
( echo "${L}" && false ) ||
die -d "overlay takeover failed after reboot"
adb_su sed -n '1,/overlay \/system/p' /proc/mounts </dev/null |
skip_administrative_mounts |
grep -v ' \(erofs\|squashfs\|ext4\|f2fs\|vfat\) ' &&
echo "${ORANGE}[ WARNING ]${NORMAL} overlay takeover after first stage init" >&2 ||
echo "${GREEN}[ OK ]${NORMAL} overlay takeover in first stage init" >&2
fi
B="`adb_cat /system/hello`" ||
die "re-read /system/hello after reboot"
check_eq "${A}" "${B}" /system after reboot
echo "${GREEN}[ OK ]${NORMAL} /system content remains after reboot" >&2
# Only root can read vendor if sepolicy permissions are as expected.
if ${enforcing}; then
adb_unroot
B="`adb_cat /vendor/hello`" &&
die "re-read /vendor/hello after reboot w/o root"
check_eq "cat: /vendor/hello: Permission denied" "${B}" vendor after reboot w/o root
echo "${GREEN}[ OK ]${NORMAL} /vendor content correct MAC after reboot" >&2
fi
adb_root &&
B="`adb_cat /vendor/hello`" ||
die "re-read /vendor/hello after reboot"
check_eq "${A}" "${B}" vendor after reboot
echo "${GREEN}[ OK ]${NORMAL} /vendor content remains after reboot" >&2
# Check if the updated libc.so is persistent after reboot.
adb_root &&
adb pull /system/lib/bootstrap/libc.so ${tempdir}/libc.so.fromdevice >/dev/null ||
die "pull libc.so from device"
diff ${tempdir}/libc.so ${tempdir}/libc.so.fromdevice > /dev/null || die "libc.so differ"
rm -rf ${tempdir}
cleanup() {
true
}
echo "${GREEN}[ OK ]${NORMAL} /system/lib/bootstrap/libc.so content remains after reboot" >&2
echo "${GREEN}[ RUN ]${NORMAL} flash vendor, confirm its content disappears" >&2
H=`adb_sh echo '${HOSTNAME}' </dev/null 2>/dev/null`
is_userspace_fastboot=false
if [ -z "${ANDROID_PRODUCT_OUT}" ]; then
echo "${ORANGE}[ WARNING ]${NORMAL} build tree not setup, skipping"
elif [ ! -s "${ANDROID_PRODUCT_OUT}/vendor.img" ]; then
echo "${ORANGE}[ WARNING ]${NORMAL} vendor image missing, skipping"
elif [ "${ANDROID_PRODUCT_OUT}" = "${ANDROID_PRODUCT_OUT%*/${H}}" ]; then
echo "${ORANGE}[ WARNING ]${NORMAL} wrong vendor image, skipping"
elif [ -z "${ANDROID_HOST_OUT}" ]; then
echo "${ORANGE}[ WARNING ]${NORMAL} please run lunch, skipping"
else
adb reboot-fastboot ||
die "fastbootd not supported (wrong adb in path?)"
fastboot_wait 2m ||
die "reboot into fastboot to flash vendor `usb_status`"
fastboot flash vendor ||
( fastboot reboot && false) ||
die "fastboot flash vendor"
fastboot_getvar is-userspace yes &&
is_userspace_fastboot=true
if [ -n "${scratch_paritition}" ]; then
fastboot_getvar partition-type:${scratch_partition} raw ||
( fastboot reboot && false) ||
die "fastboot can not see ${scratch_partition} parameters"
if ${uses_dynamic_scratch}; then
# check ${scratch_partition} via fastboot
fastboot_getvar has-slot:${scratch_partition} no &&
fastboot_getvar is-logical:${scratch_partition} yes ||
( fastboot reboot && false) ||
die "fastboot can not see ${scratch_partition} parameters"
else
fastboot_getvar is-logical:${scratch_partition} no ||
( fastboot reboot && false) ||
die "fastboot can not see ${scratch_partition} parameters"
fi
if ! ${uses_dynamic_scratch}; then
fastboot reboot-bootloader ||
die "Reboot into fastboot"
fi
if ${uses_dynamic_scratch}; then
echo "${BLUE}[ INFO ]${NORMAL} expect fastboot erase ${scratch_partition} to fail" >&2
fastboot erase ${scratch_partition} &&
( fastboot reboot || true) &&
die "fastboot can erase ${scratch_partition}"
fi
echo "${BLUE}[ INFO ]${NORMAL} expect fastboot format ${scratch_partition} to fail" >&2
fastboot format ${scratch_partition} &&
( fastboot reboot || true) &&
die "fastboot can format ${scratch_partition}"
fi
fastboot reboot ||
die "can not reboot out of fastboot"
echo "${ORANGE}[ WARNING ]${NORMAL} adb after fastboot"
adb_wait 2m ||
die "did not reboot after flash `usb_status`"
if ${overlayfs_needed}; then
adb_root &&
D=`adb_sh df -k </dev/null` &&
H=`echo "${D}" | head -1` &&
D=`echo "${D}" | skip_unrelated_mounts | grep "^overlay "` &&
echo "${H}" &&
echo "${D}" &&
echo "${D}" | grep "^overlay .* /system\$" >/dev/null ||
die "overlay /system takeover after flash vendor"
echo "${D}" | grep "^overlay .* /vendor\$" >/dev/null &&
if ${is_userspace_fastboot}; then
die "overlay supposed to be minus /vendor takeover after flash vendor"
else
echo "${ORANGE}[ WARNING ]${NORMAL} user fastboot missing, ignoring a failure"
( die "overlay supposed to be minus /vendor takeover after flash vendor" )
fi
fi
B="`adb_cat /system/hello`" ||
die "re-read /system/hello after flash vendor"
check_eq "${A}" "${B}" system after flash vendor
adb_root ||
die "adb root"
B="`adb_cat /vendor/hello`" &&
if ${is_userspace_fastboot} || ! ${overlayfs_needed}; then
die "re-read /vendor/hello after flash vendor"
else
echo "${ORANGE}[ WARNING ]${NORMAL} user fastboot missing, ignoring a failure"
( die "re-read /vendor/hello after flash vendor" )
fi
if ${is_userspace_fastboot} || ! ${overlayfs_needed}; then
check_eq "cat: /vendor/hello: No such file or directory" "${B}" vendor after flash vendor
else
( check_eq "cat: /vendor/hello: No such file or directory" "${B}" vendor after flash vendor )
fi
fi
echo "${GREEN}[ RUN ]${NORMAL} remove test content (cleanup)" >&2
T=`adb_date`
H=`adb remount 2>&1`
err=${?}
L=
D="${H%?Now reboot your device for settings to take effect*}"
if [ X"${H}" != X"${D}" ]; then
echo "${ORANGE}[ WARNING ]${NORMAL} adb remount requires a reboot after partial flash (legacy avb)"
L=`adb_logcat -b all -v nsec -t ${T} 2>&1`
adb_reboot &&
adb_wait 2m &&
adb_root ||
die "failed to reboot"
T=`adb_date`
H=`adb remount 2>&1`
err=${?}
fi
echo "${H}"
[ ${err} = 0 ] &&
( adb_sh rm /vendor/hello </dev/null 2>/dev/null || true ) &&
adb_sh rm /system/hello </dev/null ||
( [ -n "${L}" ] && echo "${L}" && false ) ||
die -t ${T} "cleanup hello"
B="`adb_cat /system/hello`" &&
die "re-read /system/hello after rm"
check_eq "cat: /system/hello: No such file or directory" "${B}" after flash rm
B="`adb_cat /vendor/hello`" &&
die "re-read /vendor/hello after rm"
check_eq "cat: /vendor/hello: No such file or directory" "${B}" after flash rm
if [ -n "${scratch_partition}" ]; then
echo "${GREEN}[ RUN ]${NORMAL} test fastboot flash to ${scratch_partition} recovery" >&2
adb reboot-fastboot ||
die "Reboot into fastbootd"
img=${TMPDIR}/adb-remount-test-${$}.img
cleanup() {
rm ${img}
}
dd if=/dev/zero of=${img} bs=4096 count=16 2>/dev/null &&
fastboot_wait 2m ||
die "reboot into fastboot `usb_status`"
fastboot flash --force ${scratch_partition} ${img}
err=${?}
cleanup
cleanup() {
true
}
fastboot reboot ||
die "can not reboot out of fastboot"
[ 0 -eq ${err} ] ||
die "fastboot flash ${scratch_partition}"
adb_wait 2m &&
adb_root ||
die "did not reboot after flash"
T=`adb_date`
D=`adb disable-verity 2>&1`
err=${?}
if [ X"${D}" != "${D%?Now reboot your device for settings to take effect*}" ]
then
echo "${ORANGE}[ WARNING ]${NORMAL} adb disable-verity requires a reboot after partial flash"
adb_reboot &&
adb_wait 2m &&
adb_root ||
die "failed to reboot"
T=`adb_date`
D="${D}
`adb disable-verity 2>&1`"
err=${?}
fi
echo "${D}"
[ ${err} = 0 ] &&
[ X"${D}" = X"${D##*setup failed}" ] &&
[ X"${D}" != X"${D##*[Uu]sing overlayfs}" ] &&
echo "${GREEN}[ OK ]${NORMAL} ${scratch_partition} recreated" >&2 ||
die -t ${T} "setup for overlayfs"
D=`adb remount 2>&1`
err=${?}
echo "${D}"
[ ${err} != 0 ] ||
[ X"${D}" = X"${D##*remount failed}" ] ||
( echo "${D}" && false ) ||
die -t ${T} "remount failed"
fi
echo "${GREEN}[ RUN ]${NORMAL} test raw remount commands" >&2
# Prerequisite is a prepped device from above.
adb_reboot &&
adb_wait 2m ||
die "lost device after reboot to ro state `usb_status`"
adb_sh grep " /vendor .* rw," /proc/mounts >/dev/null &&
die "/vendor is not read-only"
adb_su mount -o rw,remount /vendor ||
die "remount command"
adb_sh grep " /vendor .* rw," /proc/mounts >/dev/null ||
die "/vendor is not read-write"
echo "${GREEN}[ OK ]${NORMAL} mount -o rw,remount command works" >&2
restore
err=${?}
restore() {
true
}
[ ${err} = 0 ] ||
die "failed to restore verity" >&2
echo "${GREEN}[ PASSED ]${NORMAL} adb remount" >&2
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