1 files changed, 44 insertions, 19 deletions
diff --git a/packages/Python/lldbsuite/test/make/test_common.h b/packages/Python/lldbsuite/test/make/test_common.h
index 6f81970..a1ed364 100644
--- a/packages/Python/lldbsuite/test/make/test_common.h
+++ b/packages/Python/lldbsuite/test/make/test_common.h
@@ -1,19 +1,44 @@
-// This header is included in all the test programs (C and C++) and provides a
-// hook for dealing with platform-specifics.
-#if defined(_WIN32) || defined(_WIN64)
-#ifdef COMPILING_LLDB_TEST_DLL
-#define LLDB_TEST_API __declspec(dllexport)
-#else
-#define LLDB_TEST_API __declspec(dllimport)
-#endif
-#else
-#define LLDB_TEST_API
-#endif
-
-#if defined(__cplusplus) && defined(_MSC_VER) && (_HAS_EXCEPTIONS == 0)
-// Compiling MSVC libraries with _HAS_EXCEPTIONS=0, eliminates most but not all
-// calls to __uncaught_exception.  Unfortunately, it does seem to eliminate
-// the delcaration of __uncaught_excpeiton.  Including <eh.h> ensures that it is
-// declared.  This may not be necessary after MSVC 12.
-#include <eh.h>
-#endif
+// This header is included in all the test programs (C and C++) and provides a
+// hook for dealing with platform-specifics.
+#if defined(_WIN32) || defined(_WIN64)
+#ifdef COMPILING_LLDB_TEST_DLL
+#define LLDB_TEST_API __declspec(dllexport)
+#else
+#define LLDB_TEST_API __declspec(dllimport)
+#endif
+#else
+#define LLDB_TEST_API
+#endif
+
+#if defined(__cplusplus) && defined(_MSC_VER) && (_HAS_EXCEPTIONS == 0)
+// Compiling MSVC libraries with _HAS_EXCEPTIONS=0, eliminates most but not all
+// calls to __uncaught_exception.  Unfortunately, it does seem to eliminate
+// the delcaration of __uncaught_excpeiton.  Including <eh.h> ensures that it is
+// declared.  This may not be necessary after MSVC 12.
+#include <eh.h>
+#endif
+
+
+// On some systems (e.g., some versions of linux) it is not possible to attach to a process
+// without it giving us special permissions. This defines the lldb_enable_attach macro, which
+// should perform any such actions, if needed by the platform. This is a macro instead of a
+// function to avoid the need for complex linking of the test programs.
+#if defined(__linux__)
+#include <sys/prctl.h>
+
+#if defined(PR_SET_PTRACER) && defined(PR_SET_PTRACER_ANY)
+// For now we execute on best effort basis.  If this fails for some reason, so be it.
+#define lldb_enable_attach()                                                          \
+    do                                                                                \
+    {                                                                                 \
+        const int prctl_result = prctl(PR_SET_PTRACER, PR_SET_PTRACER_ANY, 0, 0, 0);  \
+        (void)prctl_result;                                                           \
+    } while (0)
+
+#endif
+
+#else // not linux
+
+#define lldb_enable_attach()
+
+#endif