Cope with argv[0] being null in the dynamic linker.
Somewhat unsurprisingly, very few commands are happy to be run like this,
in particular multiplexed commands like toybox. But that's no reason for
the linker to get in the way too.
Bug: http://b/33276926
Test: new test
Change-Id: I6dd71ea0183f4da83571039c2198ebb6ed38520e
diff --git a/tests/unistd_test.cpp b/tests/unistd_test.cpp
index ddf0df5..d90b01e 100644
--- a/tests/unistd_test.cpp
+++ b/tests/unistd_test.cpp
@@ -1364,3 +1364,11 @@
ASSERT_EQ(-1, execvp("/system/bin/does-not-exist", eth.GetArgs()));
ASSERT_EQ(ENOENT, errno);
}
+
+TEST(UNISTD_TEST, exec_argv0_null) {
+ // http://b/33276926
+ char* args[] = {nullptr};
+ char* envs[] = {nullptr};
+ ASSERT_EXIT(execve("/system/bin/run-as", args, envs), testing::ExitedWithCode(1),
+ "<unknown>: usage: run-as");
+}