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-rw-r--r--src/core/cgroup.c5
-rw-r--r--src/nspawn/nspawn-register.c17
-rw-r--r--units/systemd-nspawn@.service.in11
3 files changed, 8 insertions, 25 deletions
diff --git a/src/core/cgroup.c b/src/core/cgroup.c
index 8b0f11ed50..c19e43f571 100644
--- a/src/core/cgroup.c
+++ b/src/core/cgroup.c
@@ -800,7 +800,10 @@ static void cgroup_context_apply(Unit *u, CGroupMask mask, ManagerState state) {
"/dev/random\0" "rwm\0"
"/dev/urandom\0" "rwm\0"
"/dev/tty\0" "rwm\0"
- "/dev/pts/ptmx\0" "rw\0"; /* /dev/pts/ptmx may not be duplicated, but accessed */
+ "/dev/pts/ptmx\0" "rw\0" /* /dev/pts/ptmx may not be duplicated, but accessed */
+ /* Allow /run/systemd/inaccessible/{chr,blk} devices for mapping InaccessiblePaths */
+ "/run/systemd/inaccessible/chr\0" "rwm\0"
+ "/run/systemd/inaccessible/blk\0" "rwm\0";
const char *x, *y;
diff --git a/src/nspawn/nspawn-register.c b/src/nspawn/nspawn-register.c
index 7fd711b8a4..e5b76a0c5d 100644
--- a/src/nspawn/nspawn-register.c
+++ b/src/nspawn/nspawn-register.c
@@ -104,7 +104,7 @@ int register_machine(
return bus_log_create_error(r);
}
- r = sd_bus_message_append(m, "(sv)", "DevicePolicy", "s", "strict");
+ r = sd_bus_message_append(m, "(sv)", "DevicePolicy", "s", "closed");
if (r < 0)
return bus_log_create_error(r);
@@ -112,31 +112,20 @@ int register_machine(
* systemd-nspawn@.service, to keep the device
* policies in sync regardless if we are run with or
* without the --keep-unit switch. */
- r = sd_bus_message_append(m, "(sv)", "DeviceAllow", "a(ss)", 11,
+ r = sd_bus_message_append(m, "(sv)", "DeviceAllow", "a(ss)", 2,
/* Allow the container to
* access and create the API
* device nodes, so that
* PrivateDevices= in the
* container can work
* fine */
- "/dev/null", "rwm",
- "/dev/zero", "rwm",
- "/dev/full", "rwm",
- "/dev/random", "rwm",
- "/dev/urandom", "rwm",
- "/dev/tty", "rwm",
"/dev/net/tun", "rwm",
/* Allow the container
* access to ptys. However,
* do not permit the
* container to ever create
* these device nodes. */
- "/dev/pts/ptmx", "rw",
- "char-pts", "rw",
- /* Allow /run/systemd/inaccessible/{chr,blk}
- * devices inside the container */
- "/run/systemd/inaccessible/chr", "rwm",
- "/run/systemd/inaccessible/blk", "rwm");
+ "char-pts", "rw");
if (r < 0)
return bus_log_create_error(r);
diff --git a/units/systemd-nspawn@.service.in b/units/systemd-nspawn@.service.in
index 8f9cf9acfe..c8141639b6 100644
--- a/units/systemd-nspawn@.service.in
+++ b/units/systemd-nspawn@.service.in
@@ -25,18 +25,9 @@ TasksMax=16384
# Enforce a strict device policy, similar to the one nspawn configures
# when it allocates its own scope unit. Make sure to keep these
# policies in sync if you change them!
-DevicePolicy=strict
-DeviceAllow=/dev/null rwm
-DeviceAllow=/dev/zero rwm
-DeviceAllow=/dev/full rwm
-DeviceAllow=/dev/random rwm
-DeviceAllow=/dev/urandom rwm
-DeviceAllow=/dev/tty rwm
+DevicePolicy=closed
DeviceAllow=/dev/net/tun rwm
-DeviceAllow=/dev/pts/ptmx rw
DeviceAllow=char-pts rw
-DeviceAllow=/run/systemd/inaccessible/chr rwm
-DeviceAllow=/run/systemd/inaccessible/blk rwm
# nspawn itself needs access to /dev/loop-control and /dev/loop, to
# implement the --image= option. Add these here, too.