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tests: use busybox in lxc-test-no-new-privs

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Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
This commit is contained in:
Christian Brauner 2021-08-16 17:40:45 +02:00
parent bc84935552
commit f6a53ad2c5
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1 changed files with 7 additions and 44 deletions
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src/tests/lxc-test-no-new-privs
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@ -44,63 +44,26 @@ lxc.net.0.link = lxcbr0
EOF
fi
ARCH=i386
if type dpkg >/dev/null 2>&1; then
ARCH=$(dpkg --print-architecture)
fi
lxc-create -t download -n c1 -- -d ubuntu -r xenial -a $ARCH
lxc-create -t busybox -n c1
echo "lxc.no_new_privs = 1" >> /var/lib/lxc/c1/config
lxc-start -n c1
p1=$(lxc-info -n c1 -p -H)
[ "$p1" != "-1" ] || { echo "Failed to start container c1 (run $count)"; false; }
sleep 5s
lxc-attach -n c1 --clear-env -- apt update -y
lxc-attach -n c1 --clear-env -- apt install -y gcc make
[ "$p1" != "-1" ] || { echo "Failed to start container c1"; false; }
# Here documents don't seem to like sudo -i.
lxc-attach -n c1 --clear-env -- /bin/bash -c "cat <<EOF > /nnptest.c
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
int main(int argc, char *argv[])
{
printf(\"%d\n\", geteuid());
}
lxc-attach -n c1 --clear-env -- mkdir -p /home/ubuntu
lxc-attach -n c1 --clear-env -- /bin/sh -c "cat <<EOF >> /etc/passwd
ubuntu:x:1000:1000:ubuntu:/home/ubuntu:/bin/sh
EOF"
lxc-attach -n c1 --clear-env -- cat /nnptest.c
lxc-attach -n c1 --clear-env -- make -C / nnptest
lxc-attach -n c1 --clear-env -- chmod u+s /nnptest
# Check that lxc-attach obeys PR_SET_NO_NEW_PRIVS when it is set.
NNP_EUID=$(lxc-attach -n c1 --clear-env -- sudo -u ubuntu /nnptest)
if [ "$NNP_EUID" -ne 1000 ]; then
exit 1
fi
! lxc-attach -n c1 --clear-env --uid 1000 --gid 1000 -- ping -c 1 127.0.0.1 || { echo "Managed to ping localhost"; false; }
lxc-stop -n c1 -k
# Check that lxc-attach obeys PR_SET_NO_NEW_PRIVS when it is not set.
sed -i 's/lxc.no_new_privs = 1/lxc.no_new_privs = 0/' /var/lib/lxc/c1/config
lxc-start -n c1
NNP_EUID=$(lxc-attach -n c1 --clear-env -- sudo -u ubuntu /nnptest)
if [ "$NNP_EUID" -ne 0 ]; then
exit 1
fi
lxc-attach -n c1 --clear-env --uid 1000 --gid 1000 -- ping -c 1 127.0.0.1 || { echo "Managed to ping localhost"; false; }
lxc-stop -n c1 -k
# Check that lxc-execute and lxc-start obey PR_SET_NO_NEW_PRIVS when it is set.
NNP_EUID=$(lxc-execute -n c1 -- sudo -u ubuntu /nnptest)
if [ "$NNP_EUID" -ne 0 ]; then
exit 1
fi
# Check that lxc-execute and lxc-start obey PR_SET_NO_NEW_PRIVS when it is not set.
sed -i 's/lxc.no_new_privs = 0/lxc.no_new_privs = 1/' /var/lib/lxc/c1/config
NNP_EUID=$(lxc-execute -n c1 -- sudo -u ubuntu /nnptest)
if [ "$NNP_EUID" -ne 1000 ]; then
exit 1
fi
DONE=1