From 6ef39602f449b25d12299bddb48d9d1b56c4cbca Mon Sep 17 00:00:00 2001
From: Dmitry Vyukov <dvyukov@google.com>
Date: Thu, 27 Jun 2024 08:05:05 +0200
Subject: pkg/runtest: test feature detection

Fail some features in various ways for test OS,
and check that features are detected properly.
---
 executor/common_test.h   | 27 +++++++++++++++++++++++++++
 executor/executor_test.h | 19 +++++++++++++++++++
 2 files changed, 46 insertions(+)

(limited to 'executor')

diff --git a/executor/common_test.h b/executor/common_test.h
index c5f7f5bca..d580ae2ff 100644
--- a/executor/common_test.h
+++ b/executor/common_test.h
@@ -129,6 +129,21 @@ static long syz_compare_zlib(volatile long data, volatile long size, volatile lo
 static void loop();
 static int do_sandbox_none(void)
 {
+	// Test various ways how feature setup can fail.
+	// We don't care about these features for test OS,
+	// this is just to test the feature support detection code.
+#if SYZ_EXECUTOR || SYZ_NET_INJECTION
+#if SYZ_EXECUTOR
+	if (flag_net_injection)
+#endif
+		fail("net injection is not supported");
+#endif
+#if SYZ_EXECUTOR || SYZ_DEVLINK_PCI
+#if SYZ_EXECUTOR
+	if (flag_devlink_pci)
+#endif
+		exitf("devlink_pci is not supported");
+#endif
 	loop();
 	return 0;
 }
@@ -164,3 +179,15 @@ static long syz_inject_cover(volatile long a, volatile long b, volatile long c)
 }
 #endif
 #endif
+
+#if SYZ_EXECUTOR || SYZ_SYSCTL
+static void setup_sysctl()
+{
+}
+#endif
+
+#if SYZ_EXECUTOR || (SYZ_CGROUPS && (SYZ_SANDBOX_NONE || SYZ_SANDBOX_SETUID || SYZ_SANDBOX_NAMESPACE || SYZ_SANDBOX_ANDROID))
+static void setup_cgroups()
+{
+}
+#endif
diff --git a/executor/executor_test.h b/executor/executor_test.h
index 0644e2d97..870dcb397 100644
--- a/executor/executor_test.h
+++ b/executor/executor_test.h
@@ -134,3 +134,22 @@ static long syz_inject_cover(volatile long a, volatile long b, volatile long c)
 	memset(cov->data + size, 0xcd, std::min<uint64>(100, cov->mmap_alloc_size - size));
 	return 0;
 }
+
+static const char* setup_fault()
+{
+	return nullptr;
+}
+
+static const char* setup_leak()
+{
+	return "leak detection is not supported";
+}
+
+// Test various ways how feature setup can fail.
+// We don't care about these features for test OS,
+// this is just to test the feature support detection code.
+#define SYZ_HAVE_FEATURES 1
+static feature_t features[] = {
+    {rpc::Feature::Fault, setup_fault},
+    {rpc::Feature::Leak, setup_leak},
+};
-- 
cgit mrf-deployment