From 20b8342ccfed41245a997acee498bee2945c69f8 Mon Sep 17 00:00:00 2001
From: Gabriel <g2p.code@gmail.com>
Date: Mon, 11 Mar 2019 10:12:49 +0100
Subject: [PATCH] hvt: Don't use fallocate outside Linux

---
 tenders/hvt/hvt_module_blk.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tenders/hvt/hvt_module_blk.c b/tenders/hvt/hvt_module_blk.c
index 354e1bba..3f14968b 100644
--- a/tenders/hvt/hvt_module_blk.c
+++ b/tenders/hvt/hvt_module_blk.c
@@ -93,6 +93,7 @@ static void hypercall_blkdiscard(struct hvt *hvt, hvt_gpa_t gpa)
         return;
     }
 
+#if defined(__linux__)
     ret = fallocate(
             diskfd, FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE, pos, len);
     if (ret != 0)
@@ -104,6 +105,9 @@ static void hypercall_blkdiscard(struct hvt *hvt, hvt_gpa_t gpa)
     } else {
         di->ret = 0;
     }
+#else
+    di->ret = -2;
+#endif
 }
 
 static void hypercall_blkread(struct hvt *hvt, hvt_gpa_t gpa)