logd: clear DUMPABLE

Do not allow anyone to see logd memory.

Test: gTest logd-unit-tests, liblog-unit-tests and logcat-unit-tests
Bug: 32450474
Change-Id: Ic7377efcb7e1d3cd91b50741061037a0fb589045

parent 3a724a8f

logd/main.cpp

+5 −0

Original line number	Diff line number	Diff line
		@@ -106,6 +106,11 @@ static int drop_privs() {
		return -1;
		}

		if (prctl(PR_SET_DUMPABLE, 0) < 0) {
		android::prdebug("failed to clear PR_SET_DUMPABLE");
		return -1;
		}

		gid_t groups[] = { AID_READPROC };
		ScopedMinijail j(minijail_new());
		minijail_set_supplementary_gids(j.get(), arraysize(groups), groups);