Tizen_4.0 baseHEADsubmit/trunk/20180820.043221master

Signed-off-by: hwajeong.son <hwajeong.son@samsung.com>

1 files changed, 360 insertions, 0 deletions

diff --git a/contrib/check-config.sh b/contrib/check-config.sh
new file mode 100755
index 0000000..88eb8aa
--- /dev/null
+++ b/contrib/check-config.sh
@@ -0,0 +1,360 @@
+#!/usr/bin/env bash
+set -e
+
+EXITCODE=0
+
+# bits of this were adapted from lxc-checkconfig
+# see also https://github.com/lxc/lxc/blob/lxc-1.0.2/src/lxc/lxc-checkconfig.in
+
+possibleConfigs=(
+	'/proc/config.gz'
+	"/boot/config-$(uname -r)"
+	"/usr/src/linux-$(uname -r)/.config"
+	'/usr/src/linux/.config'
+)
+
+if [ $# -gt 0 ]; then
+	CONFIG="$1"
+else
+	: ${CONFIG:="${possibleConfigs[0]}"}
+fi
+
+if ! command -v zgrep &> /dev/null; then
+	zgrep() {
+		zcat "$2" | grep "$1"
+	}
+fi
+
+kernelVersion="$(uname -r)"
+kernelMajor="${kernelVersion%%.*}"
+kernelMinor="${kernelVersion#$kernelMajor.}"
+kernelMinor="${kernelMinor%%.*}"
+
+is_set() {
+	zgrep "CONFIG_$1=[y|m]" "$CONFIG" > /dev/null
+}
+is_set_in_kernel() {
+	zgrep "CONFIG_$1=y" "$CONFIG" > /dev/null
+}
+is_set_as_module() {
+	zgrep "CONFIG_$1=m" "$CONFIG" > /dev/null
+}
+
+color() {
+	local codes=()
+	if [ "$1" = 'bold' ]; then
+		codes=( "${codes[@]}" '1' )
+		shift
+	fi
+	if [ "$#" -gt 0 ]; then
+		local code=
+		case "$1" in
+			# see https://en.wikipedia.org/wiki/ANSI_escape_code#Colors
+			black) code=30 ;;
+			red) code=31 ;;
+			green) code=32 ;;
+			yellow) code=33 ;;
+			blue) code=34 ;;
+			magenta) code=35 ;;
+			cyan) code=36 ;;
+			white) code=37 ;;
+		esac
+		if [ "$code" ]; then
+			codes=( "${codes[@]}" "$code" )
+		fi
+	fi
+	local IFS=';'
+	echo -en '\033['"${codes[*]}"'m'
+}
+wrap_color() {
+	text="$1"
+	shift
+	color "$@"
+	echo -n "$text"
+	color reset
+	echo
+}
+
+wrap_good() {
+	echo "$(wrap_color "$1" white): $(wrap_color "$2" green)"
+}
+wrap_bad() {
+	echo "$(wrap_color "$1" bold): $(wrap_color "$2" bold red)"
+}
+wrap_warning() {
+	wrap_color >&2 "$*" red
+}
+
+check_flag() {
+	if is_set_in_kernel "$1"; then
+		wrap_good "CONFIG_$1" 'enabled'
+	elif is_set_as_module "$1"; then
+		wrap_good "CONFIG_$1" 'enabled (as module)'
+	else
+		wrap_bad "CONFIG_$1" 'missing'
+		EXITCODE=1
+	fi
+}
+
+check_flags() {
+	for flag in "$@"; do
+		echo -n "- "; check_flag "$flag"
+	done
+}
+
+check_command() {
+	if command -v "$1" >/dev/null 2>&1; then
+		wrap_good "$1 command" 'available'
+	else
+		wrap_bad "$1 command" 'missing'
+		EXITCODE=1
+	fi
+}
+
+check_device() {
+	if [ -c "$1" ]; then
+		wrap_good "$1" 'present'
+	else
+		wrap_bad "$1" 'missing'
+		EXITCODE=1
+	fi
+}
+
+check_distro_userns() {
+	source /etc/os-release 2>/dev/null || /bin/true
+	if [[ "${ID}" =~ ^(centos|rhel)$ && "${VERSION_ID}" =~ ^7 ]]; then
+		# this is a CentOS7 or RHEL7 system
+		grep -q "user_namespace.enable=1" /proc/cmdline || {
+			# no user namespace support enabled
+			wrap_bad "  (RHEL7/CentOS7" "User namespaces disabled; add 'user_namespace.enable=1' to boot command line)"
+			EXITCODE=1
+		}
+	fi
+}
+
+if [ ! -e "$CONFIG" ]; then
+	wrap_warning "warning: $CONFIG does not exist, searching other paths for kernel config ..."
+	for tryConfig in "${possibleConfigs[@]}"; do
+		if [ -e "$tryConfig" ]; then
+			CONFIG="$tryConfig"
+			break
+		fi
+	done
+	if [ ! -e "$CONFIG" ]; then
+		wrap_warning "error: cannot find kernel config"
+		wrap_warning "  try running this script again, specifying the kernel config:"
+		wrap_warning "    CONFIG=/path/to/kernel/.config $0 or $0 /path/to/kernel/.config"
+		exit 1
+	fi
+fi
+
+wrap_color "info: reading kernel config from $CONFIG ..." white
+echo
+
+echo 'Generally Necessary:'
+
+echo -n '- '
+cgroupSubsystemDir="$(awk '/[, ](cpu|cpuacct|cpuset|devices|freezer|memory)[, ]/ && $3 == "cgroup" { print $2 }' /proc/mounts | head -n1)"
+cgroupDir="$(dirname "$cgroupSubsystemDir")"
+if [ -d "$cgroupDir/cpu" -o -d "$cgroupDir/cpuacct" -o -d "$cgroupDir/cpuset" -o -d "$cgroupDir/devices" -o -d "$cgroupDir/freezer" -o -d "$cgroupDir/memory" ]; then
+	echo "$(wrap_good 'cgroup hierarchy' 'properly mounted') [$cgroupDir]"
+else
+	if [ "$cgroupSubsystemDir" ]; then
+		echo "$(wrap_bad 'cgroup hierarchy' 'single mountpoint!') [$cgroupSubsystemDir]"
+	else
+		echo "$(wrap_bad 'cgroup hierarchy' 'nonexistent??')"
+	fi
+	EXITCODE=1
+	echo "    $(wrap_color '(see https://github.com/tianon/cgroupfs-mount)' yellow)"
+fi
+
+if [ "$(cat /sys/module/apparmor/parameters/enabled 2>/dev/null)" = 'Y' ]; then
+	echo -n '- '
+	if command -v apparmor_parser &> /dev/null; then
+		echo "$(wrap_good 'apparmor' 'enabled and tools installed')"
+	else
+		echo "$(wrap_bad 'apparmor' 'enabled, but apparmor_parser missing')"
+		echo -n '    '
+		if command -v apt-get &> /dev/null; then
+			echo "$(wrap_color '(use "apt-get install apparmor" to fix this)')"
+		elif command -v yum &> /dev/null; then
+			echo "$(wrap_color '(your best bet is "yum install apparmor-parser")')"
+		else
+			echo "$(wrap_color '(look for an "apparmor" package for your distribution)')"
+		fi
+		EXITCODE=1
+	fi
+fi
+
+flags=(
+	NAMESPACES {NET,PID,IPC,UTS}_NS
+	CGROUPS CGROUP_CPUACCT CGROUP_DEVICE CGROUP_FREEZER CGROUP_SCHED CPUSETS MEMCG
+	KEYS
+	VETH BRIDGE BRIDGE_NETFILTER
+	NF_NAT_IPV4 IP_NF_FILTER IP_NF_TARGET_MASQUERADE
+	NETFILTER_XT_MATCH_{ADDRTYPE,CONNTRACK,IPVS}
+	IP_NF_NAT NF_NAT NF_NAT_NEEDED
+
+	# required for bind-mounting /dev/mqueue into containers
+	POSIX_MQUEUE
+)
+check_flags "${flags[@]}"
+if [ "$kernelMajor" -lt 4 ] || [ "$kernelMajor" -eq 4 -a "$kernelMinor" -lt 8 ]; then
+        check_flags DEVPTS_MULTIPLE_INSTANCES
+fi
+
+echo
+
+echo 'Optional Features:'
+{
+	check_flags USER_NS
+	check_distro_userns
+}
+{
+	check_flags SECCOMP
+}
+{
+	check_flags CGROUP_PIDS
+}
+{
+	CODE=${EXITCODE}
+	check_flags MEMCG_SWAP MEMCG_SWAP_ENABLED
+	if [ -e /sys/fs/cgroup/memory/memory.memsw.limit_in_bytes ]; then
+		echo "    $(wrap_color '(cgroup swap accounting is currently enabled)' bold black)"
+		EXITCODE=${CODE}
+	elif is_set MEMCG_SWAP && ! is_set MEMCG_SWAP_ENABLED; then
+		echo "    $(wrap_color '(cgroup swap accounting is currently not enabled, you can enable it by setting boot option "swapaccount=1")' bold black)"
+	fi
+}
+{
+	if is_set LEGACY_VSYSCALL_NATIVE; then
+		echo -n "- "; wrap_bad "CONFIG_LEGACY_VSYSCALL_NATIVE" 'enabled'
+		echo "    $(wrap_color '(dangerous, provides an ASLR-bypassing target with usable ROP gadgets.)' bold black)"
+	elif is_set LEGACY_VSYSCALL_EMULATE; then
+		echo -n "- "; wrap_good "CONFIG_LEGACY_VSYSCALL_EMULATE" 'enabled'
+	elif is_set LEGACY_VSYSCALL_NONE; then
+		echo -n "- "; wrap_bad "CONFIG_LEGACY_VSYSCALL_NONE" 'enabled'
+		echo "    $(wrap_color '(containers using eglibc <= 2.13 will not work. Switch to' bold black)"
+		echo "    $(wrap_color ' "CONFIG_VSYSCALL_[NATIVE|EMULATE]" or use "vsyscall=[native|emulate]"' bold black)"
+		echo "    $(wrap_color ' on kernel command line. Note that this will disable ASLR for the,' bold black)"
+		echo "    $(wrap_color ' VDSO which may assist in exploiting security vulnerabilities.)' bold black)"
+	# else Older kernels (prior to 3dc33bd30f3e, released in v4.40-rc1) do
+	#      not have these LEGACY_VSYSCALL options and are effectively
+	#      LEGACY_VSYSCALL_EMULATE. Even older kernels are presumably
+	#      effectively LEGACY_VSYSCALL_NATIVE.
+	fi
+}
+
+if [ "$kernelMajor" -lt 4 ] || [ "$kernelMajor" -eq 4 -a "$kernelMinor" -le 5 ]; then
+	check_flags MEMCG_KMEM
+fi
+
+if [ "$kernelMajor" -lt 3 ] || [ "$kernelMajor" -eq 3 -a "$kernelMinor" -le 18 ]; then
+	check_flags RESOURCE_COUNTERS
+fi
+
+if [ "$kernelMajor" -lt 3 ] || [ "$kernelMajor" -eq 3 -a "$kernelMinor" -le 13 ]; then
+	netprio=NETPRIO_CGROUP
+else
+	netprio=CGROUP_NET_PRIO
+fi
+
+flags=(
+	BLK_CGROUP BLK_DEV_THROTTLING IOSCHED_CFQ CFQ_GROUP_IOSCHED
+	CGROUP_PERF
+	CGROUP_HUGETLB
+	NET_CLS_CGROUP $netprio
+	CFS_BANDWIDTH FAIR_GROUP_SCHED RT_GROUP_SCHED
+	IP_VS
+	IP_VS_NFCT
+ 	IP_VS_RR
+)
+check_flags "${flags[@]}"
+
+if ! is_set EXT4_USE_FOR_EXT2; then
+	check_flags EXT3_FS EXT3_FS_XATTR EXT3_FS_POSIX_ACL EXT3_FS_SECURITY
+	if ! is_set EXT3_FS || ! is_set EXT3_FS_XATTR || ! is_set EXT3_FS_POSIX_ACL || ! is_set EXT3_FS_SECURITY; then
+		echo "    $(wrap_color '(enable these ext3 configs if you are using ext3 as backing filesystem)' bold black)"
+	fi
+fi
+
+check_flags EXT4_FS EXT4_FS_POSIX_ACL EXT4_FS_SECURITY
+if ! is_set EXT4_FS || ! is_set EXT4_FS_POSIX_ACL || ! is_set EXT4_FS_SECURITY; then
+	if is_set EXT4_USE_FOR_EXT2; then
+		echo "    $(wrap_color 'enable these ext4 configs if you are using ext3 or ext4 as backing filesystem' bold black)"
+	else
+		echo "    $(wrap_color 'enable these ext4 configs if you are using ext4 as backing filesystem' bold black)"
+	fi
+fi
+
+echo '- Network Drivers:'
+echo '  - "'$(wrap_color 'overlay' blue)'":'
+check_flags VXLAN | sed 's/^/    /'
+echo '      Optional (for encrypted networks):'
+check_flags CRYPTO CRYPTO_AEAD CRYPTO_GCM CRYPTO_SEQIV CRYPTO_GHASH \
+            XFRM XFRM_USER XFRM_ALGO INET_ESP INET_XFRM_MODE_TRANSPORT | sed 's/^/      /'
+echo '  - "'$(wrap_color 'ipvlan' blue)'":'
+check_flags IPVLAN | sed 's/^/    /'
+echo '  - "'$(wrap_color 'macvlan' blue)'":'
+check_flags MACVLAN DUMMY | sed 's/^/    /'
+echo '  - "'$(wrap_color 'ftp,tftp client in container' blue)'":'
+check_flags NF_NAT_FTP NF_CONNTRACK_FTP NF_NAT_TFTP NF_CONNTRACK_TFTP | sed 's/^/    /'
+
+# only fail if no storage drivers available
+CODE=${EXITCODE}
+EXITCODE=0
+STORAGE=1
+
+echo '- Storage Drivers:'
+echo '  - "'$(wrap_color 'aufs' blue)'":'
+check_flags AUFS_FS | sed 's/^/    /'
+if ! is_set AUFS_FS && grep -q aufs /proc/filesystems; then
+	echo "      $(wrap_color '(note that some kernels include AUFS patches but not the AUFS_FS flag)' bold black)"
+fi
+[ "$EXITCODE" = 0 ] && STORAGE=0
+EXITCODE=0
+
+echo '  - "'$(wrap_color 'btrfs' blue)'":'
+check_flags BTRFS_FS | sed 's/^/    /'
+check_flags BTRFS_FS_POSIX_ACL | sed 's/^/    /'
+[ "$EXITCODE" = 0 ] && STORAGE=0
+EXITCODE=0
+
+echo '  - "'$(wrap_color 'devicemapper' blue)'":'
+check_flags BLK_DEV_DM DM_THIN_PROVISIONING | sed 's/^/    /'
+[ "$EXITCODE" = 0 ] && STORAGE=0
+EXITCODE=0
+
+echo '  - "'$(wrap_color 'overlay' blue)'":'
+check_flags OVERLAY_FS | sed 's/^/    /'
+[ "$EXITCODE" = 0 ] && STORAGE=0
+EXITCODE=0
+
+echo '  - "'$(wrap_color 'zfs' blue)'":'
+echo -n "    - "; check_device /dev/zfs
+echo -n "    - "; check_command zfs
+echo -n "    - "; check_command zpool
+[ "$EXITCODE" = 0 ] && STORAGE=0
+EXITCODE=0
+
+EXITCODE=$CODE
+[ "$STORAGE" = 1 ] && EXITCODE=1
+
+echo
+
+check_limit_over()
+{
+	if [ $(cat "$1") -le "$2" ]; then
+		wrap_bad "- $1" "$(cat $1)"
+		wrap_color "    This should be set to at least $2, for example set: sysctl -w kernel/keys/root_maxkeys=1000000" bold black
+		EXITCODE=1
+	else
+		wrap_good "- $1" "$(cat $1)"
+	fi
+}
+
+echo 'Limits:'
+check_limit_over /proc/sys/kernel/keys/root_maxkeys 10000
+echo
+
+exit $EXITCODE