X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fcore%2Fcgroup.c;h=0951a09964358b7157a046cf7b1d36832b4aa9b3;hb=b5884878a2874447b2a9f07f324a7cd909d96d48;hp=e604c3cbc694e7254a56fb5fb5389345502f2101;hpb=b1d6dcf5a5c5aa02843c026dede0638f77798cb4;p=elogind.git

diff --git a/src/core/cgroup.c b/src/core/cgroup.c
index e604c3cbc..0951a0996 100644
--- a/src/core/cgroup.c
+++ b/src/core/cgroup.c
@@ -105,7 +105,8 @@ void cgroup_context_dump(CGroupContext *c, FILE* f, const char *prefix) {
                 "%sBlockIOWeight=%lu\n"
                 "%sStartupBlockIOWeight=%lu\n"
                 "%sMemoryLimit=%" PRIu64 "\n"
-                "%sDevicePolicy=%s\n",
+                "%sDevicePolicy=%s\n"
+                "%sDelegate=%s\n",
                 prefix, yes_no(c->cpu_accounting),
                 prefix, yes_no(c->blockio_accounting),
                 prefix, yes_no(c->memory_accounting),
@@ -115,7 +116,8 @@ void cgroup_context_dump(CGroupContext *c, FILE* f, const char *prefix) {
                 prefix, c->blockio_weight,
                 prefix, c->startup_blockio_weight,
                 prefix, c->memory_limit,
-                prefix, cgroup_device_policy_to_string(c->device_policy));
+                prefix, cgroup_device_policy_to_string(c->device_policy),
+                prefix, yes_no(c->delegate));
 
         LIST_FOREACH(device_allow, a, c->device_allow)
                 fprintf(f,
@@ -461,7 +463,8 @@ CGroupControllerMask cgroup_context_get_mask(CGroupContext *c) {
             c->memory_limit != (uint64_t) -1)
                 mask |= CGROUP_MEMORY;
 
-        if (c->device_allow || c->device_policy != CGROUP_AUTO)
+        if (c->device_allow ||
+            c->device_policy != CGROUP_AUTO)
                 mask |= CGROUP_DEVICE;
 
         return mask;
@@ -474,6 +477,19 @@ CGroupControllerMask unit_get_cgroup_mask(Unit *u) {
         if (!c)
                 return 0;
 
+        /* If delegation is turned on, then turn on all cgroups,
+         * unless the process we fork into it is known to drop
+         * privileges anyway, and shouldn't get access to the
+         * controllers anyway. */
+
+        if (c->delegate) {
+                ExecContext *e;
+
+                e = unit_get_exec_context(u);
+                if (!e || exec_context_maintains_privileges(e))
+                        return _CGROUP_CONTROLLER_MASK_ALL;
+        }
+
         return cgroup_context_get_mask(c);
 }