From 75efebac1e1eae7e23e121091cde1963fa2d8d26 Mon Sep 17 00:00:00 2001
From: Arvid Norberg <arvid@libtorrent.org>
Date: Mon, 16 Feb 2009 00:42:44 +0000
Subject: [PATCH] allocate files on unix when allocate storage mode is used

---
 src/file.cpp    | 19 +++++++++++++++++++
 src/storage.cpp |  2 ++
 2 files changed, 21 insertions(+)

diff --git a/src/file.cpp b/src/file.cpp
index b9117f551..2ff0ab2b6 100644
--- a/src/file.cpp
+++ b/src/file.cpp
@@ -765,6 +765,25 @@ namespace libtorrent
 			ec = error_code(errno, get_posix_category());
 			return false;
 		}
+		if ((m_open_mode & sparse) == 0)
+		{
+			// if we're not in sparse mode, allocate the storage
+#ifdef F_PREALLOCATE
+			fstore_t f = {F_ALLOCATECONTIG, F_PEOFPOSMODE, 0, s, 0};
+			if (fcntl(m_fd, F_PREALLOCATE, &f) < 0)
+			{
+				ec = error_code(errno, get_posix_category());
+				return false;
+			}
+#else
+			int ret = posix_fallocate(m_fd, 0, s);
+			if (ret != 0)
+			{
+				ec = error_code(ret, get_posix_category());
+				return false;
+			}
+#endif
+		}
 #endif
 		return true;
 	}
diff --git a/src/storage.cpp b/src/storage.cpp
index 864ba321e..8db6d1f1f 100644
--- a/src/storage.cpp
+++ b/src/storage.cpp
@@ -104,6 +104,8 @@ POSSIBILITY OF SUCH DAMAGE.
 
 #ifdef BOOST_WINDOWS
 #include <windows.h>
+#else
+#include <fcntl.h>
 #endif
 
 #include <boost/filesystem/exception.hpp>