/usr/bin/lxc-checkconfig is in lxc 0.7.5-3ubuntu52.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 | #!/bin/bash
# Allow environment variables to override grep and config
: ${CONFIG:=/proc/config.gz}
: ${GREP:=zgrep}
SETCOLOR_SUCCESS="echo -en \\033[1;32m"
SETCOLOR_FAILURE="echo -en \\033[1;31m"
SETCOLOR_WARNING="echo -en \\033[1;33m"
SETCOLOR_NORMAL="echo -en \\033[0;39m"
is_set() {
$GREP -q "$1=[y|m]" $CONFIG
return $?
}
is_enabled() {
mandatory=$2
is_set $1
RES=$?
if [ $RES -eq 0 ]; then
$SETCOLOR_SUCCESS && echo -e "enabled" && $SETCOLOR_NORMAL
else
if [ ! -z "$mandatory" -a "$mandatory" = yes ]; then
$SETCOLOR_FAILURE && echo -e "required" && $SETCOLOR_NORMAL
else
$SETCOLOR_WARNING && echo -e "missing" && $SETCOLOR_NORMAL
fi
fi
}
if [ ! -f $CONFIG ]; then
echo "Kernel config $CONFIG not found, looking in other places..."
KVER="`uname -r`"
HEADERS_CONFIG="/lib/modules/$KVER/build/.config"
BOOT_CONFIG="/boot/config-$KVER"
[ -f "${HEADERS_CONFIG}" ] && CONFIG=${HEADERS_CONFIG}
[ -f "${BOOT_CONFIG}" ] && CONFIG=${BOOT_CONFIG}
GREP=grep
if [ ! -f $CONFIG ]; then
echo
echo "The kernel configuration can not be retrieved."
echo "Please recompile with IKCONFIG_PROC, or"
echo "install the kernel headers, or specify"
echo "the path to the config file with: CONFIG=<path> lxc-checkconfig"
echo
exit 1
else
echo "Found kernel config file $CONFIG"
fi
fi
echo "--- Namespaces ---"
echo -n "Namespaces: " && is_enabled CONFIG_NAMESPACES yes
echo -n "Utsname namespace: " && is_enabled CONFIG_UTS_NS
echo -n "Ipc namespace: " && is_enabled CONFIG_IPC_NS yes
echo -n "Pid namespace: " && is_enabled CONFIG_PID_NS yes
echo -n "User namespace: " && is_enabled CONFIG_USER_NS
echo -n "Network namespace: " && is_enabled CONFIG_NET_NS
echo -n "Multiple /dev/pts instances: " && is_enabled DEVPTS_MULTIPLE_INSTANCES
echo
echo "--- Control groups ---"
print_cgroups() {
# print all mountpoints for cgroup filesystems
awk '$1 !~ /#/ && $3 == mp { print $2; } ; END { exit(0); } ' "mp=$1" "$2" ;
}
CGROUP_MNT_PATH=`print_cgroups cgroup /proc/self/mounts | head -1`
echo -n "Cgroup: " && is_enabled CONFIG_CGROUPS yes
if [ -f $CGROUP_MNT_PATH/cgroup.clone_children ]; then
echo -n "Cgroup clone_children flag: " &&
$SETCOLOR_SUCCESS && echo -e "enabled" && $SETCOLOR_NORMAL
else
echo -n "Cgroup namespace: " && is_enabled CONFIG_CGROUP_NS yes
fi
echo -n "Cgroup device: " && is_enabled CONFIG_CGROUP_DEVICE
echo -n "Cgroup sched: " && is_enabled CONFIG_CGROUP_SCHED
echo -n "Cgroup cpu account: " && is_enabled CONFIG_CGROUP_CPUACCT
echo -n "Cgroup memory controller: " && is_enabled CONFIG_CGROUP_MEM_RES_CTLR
is_set CONFIG_SMP && echo -n "Cgroup cpuset: " && is_enabled CONFIG_CPUSETS
echo
echo "--- Misc ---"
echo -n "Veth pair device: " && is_enabled CONFIG_VETH
echo -n "Macvlan: " && is_enabled CONFIG_MACVLAN
echo -n "Vlan: " && is_enabled CONFIG_VLAN_8021Q
KVER_MINOR=$($GREP '^# Linux' $CONFIG | \
sed -r 's/.*2.6.([0-9]{2}).*/\1/')
echo -n "File capabilities: " &&
[[ ${KVER_MINOR} < 33 ]] && is_enabled CONFIG_SECURITY_FILE_CAPABILITIES ||
[[ ${KVER_MINOR} > 32 ]] && $SETCOLOR_SUCCESS && echo -e "enabled" &&
$SETCOLOR_NORMAL
echo
echo "Note : Before booting a new kernel, you can check its configuration"
echo "usage : CONFIG=/path/to/config $0"
echo
|