Update LLDB snapshot to upstream r216948 (git 50f7fe44)

This is approximately "LLDB 3.5" although with a little bit of skew,
and will go along with the Clang 3.5 import.

Sponsored by:	DARPA, AFRL

1 files changed, 95 insertions, 0 deletions

diff --git a/contrib/llvm/tools/lldb/source/Target/FileAction.cpp b/contrib/llvm/tools/lldb/source/Target/FileAction.cpp
new file mode 100644
index 0000000..18b0399
--- /dev/null
+++ b/contrib/llvm/tools/lldb/source/Target/FileAction.cpp
@@ -0,0 +1,95 @@
+//===-- FileAction.cpp ------------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include <fcntl.h>
+
+#if defined(_WIN32)
+#include "lldb/Host/Windows/win32.h" // For O_NOCTTY
+#endif
+
+#include "lldb/Target/FileAction.h"
+
+using namespace lldb_private;
+
+//----------------------------------------------------------------------------
+// FileAction member functions
+//----------------------------------------------------------------------------
+
+FileAction::FileAction()
+    : m_action(eFileActionNone)
+    , m_fd(-1)
+    , m_arg(-1)
+    , m_path()
+{
+}
+
+void
+FileAction::Clear()
+{
+    m_action = eFileActionNone;
+    m_fd = -1;
+    m_arg = -1;
+    m_path.clear();
+}
+
+const char *
+FileAction::GetPath() const
+{
+    if (m_path.empty())
+        return NULL;
+    return m_path.c_str();
+}
+
+bool
+FileAction::Open(int fd, const char *path, bool read, bool write)
+{
+    if ((read || write) && fd >= 0 && path && path[0])
+    {
+        m_action = eFileActionOpen;
+        m_fd = fd;
+        if (read && write)
+            m_arg = O_NOCTTY | O_CREAT | O_RDWR;
+        else if (read)
+            m_arg = O_NOCTTY | O_RDONLY;
+        else
+            m_arg = O_NOCTTY | O_CREAT | O_WRONLY;
+        m_path.assign(path);
+        return true;
+    }
+    else
+    {
+        Clear();
+    }
+    return false;
+}
+
+bool
+FileAction::Close(int fd)
+{
+    Clear();
+    if (fd >= 0)
+    {
+        m_action = eFileActionClose;
+        m_fd = fd;
+    }
+    return m_fd >= 0;
+}
+
+bool
+FileAction::Duplicate(int fd, int dup_fd)
+{
+    Clear();
+    if (fd >= 0 && dup_fd >= 0)
+    {
+        m_action = eFileActionDuplicate;
+        m_fd = fd;
+        m_arg = dup_fd;
+    }
+    return m_fd >= 0;
+}