From d734ff7d298d0abee4e6f75f94afd2d33e0c8fc6 Mon Sep 17 00:00:00 2001
From: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com>
Date: Sun, 12 Aug 2012 16:52:53 +0900
Subject: Added new file allocation method called 'trunc'

--file-allocation option can now take new value 'trunc'. 'trunc' uses
ftruncate() system call or platform-specific counterpart to truncate a
file to a specified length.
---
 src/MultiFileAllocationIterator.cc | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'src/MultiFileAllocationIterator.cc')

diff --git a/src/MultiFileAllocationIterator.cc b/src/MultiFileAllocationIterator.cc
index f17115fe..24653335 100644
--- a/src/MultiFileAllocationIterator.cc
+++ b/src/MultiFileAllocationIterator.cc
@@ -36,6 +36,7 @@
 #include "MultiDiskAdaptor.h"
 #include "FileEntry.h"
 #include "AdaptiveFileAllocationIterator.h"
+#include "TruncFileAllocationIterator.h"
 #ifdef HAVE_SOME_FALLOCATE
 # include "FallocFileAllocationIterator.h"
 #endif // HAVE_SOME_FALLOCATE
@@ -76,6 +77,12 @@ void MultiFileAllocationIterator::allocateChunk()
                                             fileEntry->getLength()));
         break;
 #endif // HAVE_SOME_FALLOCATE
+      case(DiskAdaptor::FILE_ALLOC_TRUNC):
+        fileAllocationIterator_.reset
+          (new TruncFileAllocationIterator(entry->getDiskWriter().get(),
+                                           entry->size(),
+                                           fileEntry->getLength()));
+        break;
       default:
         fileAllocationIterator_.reset
           (new AdaptiveFileAllocationIterator(entry->getDiskWriter().get(),
-- 
cgit