From e7ad62c1b1627f7bab2524a4c30f1833f6b6767d Mon Sep 17 00:00:00 2001
From: Simon Rettberg
Date: Thu, 1 Aug 2013 19:35:48 +0200
Subject: [SERVER] Fix create_image() by adding fallback solutions for
 fallocate()

---
 src/server/helper.c | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'src/server/helper.c')

diff --git a/src/server/helper.c b/src/server/helper.c
index b028ad1..65239ea 100644
--- a/src/server/helper.c
+++ b/src/server/helper.c
@@ -162,3 +162,12 @@ int mkdir_p(const char* path)
 	if ( mkdir( buffer, 0750 ) != 0 && errno != EEXIST ) return FALSE;
 	return TRUE;
 }
+
+int file_alloc(int fd, uint64_t offset, uint64_t size)
+{
+	if ( fallocate( fd, 0, offset, size ) == 0 ) return TRUE; // fast way
+	if ( posix_fallocate( fd, offset, size ) == 0 ) return TRUE; // slow way
+	if ( lseek( fd, offset + size - 1, SEEK_SET ) != offset ) return FALSE; // dumb way
+	if ( write( fd, "", 1 ) != 1 ) return FALSE;
+	return TRUE;
+}
-- 
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