Avoid usage of F_DUPFD_CLOEXEC where not available (e.g. kfreebsd*)

Summary:
kfreebsd doesn't have F_DUPFD_CLOEXEC, so use it conditionally.

Author: Emilio Pozuelo Monfort <pochu@debian.org>
Author: Petr Salinger <Petr.Salinger@seznam.cz>
Author: Gianfranco Costamagna

Reviewers: emaste

Subscribers: emaste

Differential Revision: http://reviews.llvm.org/D12429

llvm-svn: 246294

1 files changed, 14 insertions, 0 deletions

diff --git a/lldb/source/Plugins/Process/FreeBSD/ProcessFreeBSD.cpp b/lldb/source/Plugins/Process/FreeBSD/ProcessFreeBSD.cpp
index 8d8525481d9..4094169bc29 100644
--- a/lldb/source/Plugins/Process/FreeBSD/ProcessFreeBSD.cpp
+++ b/lldb/source/Plugins/Process/FreeBSD/ProcessFreeBSD.cpp
@@ -462,11 +462,25 @@ ProcessFreeBSD::DoLaunch (Module *module,
     int terminal = m_monitor->GetTerminalFD();
     if (terminal >= 0) {
         // The reader thread will close the file descriptor when done, so we pass it a copy.
+#ifdef F_DUPFD_CLOEXEC
         int stdio = fcntl(terminal, F_DUPFD_CLOEXEC, 0);
         if (stdio == -1) {
             error.SetErrorToErrno();
             return error;
         }
+#else
+        // Special case when F_DUPFD_CLOEXEC does not exist (Debian kFreeBSD)
+        int stdio = fcntl(terminal, F_DUPFD, 0);
+        if (stdio == -1) {
+            error.SetErrorToErrno();
+            return error;
+        }
+        stdio = fcntl(terminal, F_SETFD, FD_CLOEXEC);
+        if (stdio == -1) {
+            error.SetErrorToErrno();
+            return error;
+        }
+#endif
         SetSTDIOFileDescriptor(stdio);
     }