From 750e1c41e97cd9b53da3f6a64938c528951d358b Mon Sep 17 00:00:00 2001
From: Benjamin Barenblat <bbaren@mit.edu>
Date: Sat, 20 Feb 2016 13:40:01 -0500
Subject: Include what you use

---
 src/encoding.cc     | 1 +
 src/operations.cc   | 5 +----
 src/posix_extras.cc | 4 ++--
 src/posix_extras.h  | 1 -
 src/scoville.cc     | 8 ++++++--
 5 files changed, 10 insertions(+), 9 deletions(-)

diff --git a/src/encoding.cc b/src/encoding.cc
index 93773a6..620a821 100644
--- a/src/encoding.cc
+++ b/src/encoding.cc
@@ -16,6 +16,7 @@
 
 #include <array>
 #include <cstdlib>
+#include <ios>
 #include <sstream>
 #include <string>
 
diff --git a/src/operations.cc b/src/operations.cc
index a69b591..326f2a5 100644
--- a/src/operations.cc
+++ b/src/operations.cc
@@ -15,12 +15,10 @@
 // You should have received a copy of the GNU General Public License along with
 // this program.  If not, see <http://www.gnu.org/licenses/>.
 
-#define BSD_SOURCE
-#define _POSIX_C_SOURCE 201602L
-
 #include "operations.h"
 
 #include <cerrno>
+#include <cstdint>
 #include <cstring>
 #include <experimental/optional>
 #include <memory>
@@ -33,7 +31,6 @@
 #include <glog/logging.h>
 #include <sys/stat.h>
 #include <sys/types.h>
-#include <unistd.h>
 
 #include "posix_extras.h"
 
diff --git a/src/posix_extras.cc b/src/posix_extras.cc
index 07b459e..6013b9b 100644
--- a/src/posix_extras.cc
+++ b/src/posix_extras.cc
@@ -12,8 +12,7 @@
 // License for the specific language governing permissions and limitations under
 // the License.
 
-#define _BSD_SOURCE 1
-#define _POSIX_C_SOURCE 201502L
+#define _XOPEN_SOURCE 700
 #undef _GNU_SOURCE
 
 #include "posix_extras.h"
@@ -21,6 +20,7 @@
 #include <cerrno>
 #include <experimental/optional>
 #include <stdexcept>
+#include <string>
 #include <vector>
 
 #include <dirent.h>
diff --git a/src/posix_extras.h b/src/posix_extras.h
index 9aea47d..840b448 100644
--- a/src/posix_extras.h
+++ b/src/posix_extras.h
@@ -23,7 +23,6 @@
 #include <dirent.h>
 #include <sys/stat.h>
 #include <sys/types.h>
-#include <unistd.h>
 
 namespace scoville {
 
diff --git a/src/scoville.cc b/src/scoville.cc
index b572b5f..78a29ae 100644
--- a/src/scoville.cc
+++ b/src/scoville.cc
@@ -14,9 +14,11 @@
 // You should have received a copy of the GNU General Public License along with
 // this program.  If not, see <http://www.gnu.org/licenses/>.
 
-#include <iostream>
 #include <memory>
 
+#define FUSE_USE_VERSION 26
+#include <fcntl.h>
+#include <fuse/fuse.h>
 #include <gflags/gflags.h>
 #include <glog/logging.h>
 
@@ -33,7 +35,9 @@ int main(int argc, char* argv[]) {
   google::ParseCommandLineFlags(&argc, &argv, true);
   google::InitGoogleLogging(argv[0]);
 
-  // Open an FD to the underlying file system so we can still do operations on
+  // This is an overlay file system, which means once we start FUSE, the
+  // underlying file system will be inaccessible through normal means.  Open a
+  // file descriptor to the underlying root now so we can still do operations on
   // it while it's overlayed.
   std::unique_ptr<scoville::File> root;
   const char* const root_path = argv[argc - 1];
-- 
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