From 45f1316bcecf173761e697d7a1a1b45f526e9685 Mon Sep 17 00:00:00 2001
From: Charles Kerr <charles@transmissionbt.com>
Date: Tue, 16 Jun 2009 17:10:47 +0000
Subject: [PATCH] (trunk libT) #2196: add a fallback implementation of
 preallocateFileFull() in case the os-specific and fs-specific approaches
 don't work.

---
 libtransmission/fdlimit.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/libtransmission/fdlimit.c b/libtransmission/fdlimit.c
index ac53513a7..6ab9ce792 100644
--- a/libtransmission/fdlimit.c
+++ b/libtransmission/fdlimit.c
@@ -183,6 +183,19 @@ preallocateFileFull( const char * filename, uint64_t length )
         }
 # endif
 
+        if( !success ) /* if nothing else works, do it the old-fashioned way */
+        {
+            uint8_t buf[ 4096 ]; 
+            memset( buf, 0, sizeof( buf ) ); 
+            success = TRUE; 
+            while ( success && ( length > 0 ) ) 
+            { 
+                const int thisPass = MIN( length, sizeof( buf ) ); 
+                success = write( fd, buf, thisPass ) == thisPass; 
+                length -= thisPass; 
+            } 
+        }
+
         close( fd );
     }