+int capability_update_inherited_set(cap_t caps, uint64_t set) {
+ unsigned long i;
+
+ /* Add capabilities in the set to the inherited caps. Do not apply
+ * them yet. */
+
+ for (i = 0; i < cap_last_cap(); i++) {
+
+ if (set & (UINT64_C(1) << i)) {
+ cap_value_t v;
+
+ v = (cap_value_t) i;
+
+ /* Make the capability inheritable. */
+ if (cap_set_flag(caps, CAP_INHERITABLE, 1, &v, CAP_SET) < 0)
+ return -errno;
+ }
+ }
+
+ return 0;
+}
+
+int capability_ambient_set_apply(uint64_t set, bool also_inherit) {
+ unsigned long i;
+ _cleanup_cap_free_ cap_t caps = NULL;
+
+ /* Add the capabilities to the ambient set. */
+
+ if (also_inherit) {
+ int r;
+ caps = cap_get_proc();
+ if (!caps)
+ return -errno;
+
+ r = capability_update_inherited_set(caps, set);
+ if (r < 0)
+ return -errno;
+
+ if (cap_set_proc(caps) < 0)
+ return -errno;
+ }
+
+ for (i = 0; i < cap_last_cap(); i++) {
+
+ if (set & (UINT64_C(1) << i)) {
+
+ /* Add the capability to the ambient set. */
+ if (prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_RAISE, i, 0, 0) < 0)
+ return -errno;
+ }
+ }
+
+ return 0;
+}
+
+int capability_bounding_set_drop(uint64_t keep, bool right_now) {