From 205fe5e7ea72afb089f38232876e932cc3ee5fac Mon Sep 17 00:00:00 2001
From: arvidn <arvid@libtorrent.org>
Date: Sun, 15 Oct 2017 15:19:25 +0200
Subject: [PATCH] fix full allocation failure on APFS

---
 ChangeLog    |  2 ++
 src/file.cpp | 26 ++++++++++++++++----------
 2 files changed, 18 insertions(+), 10 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 3f4e5d323..1e3af50e9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,4 +1,6 @@
 
+	* fix full allocation failure on APFS
+
 1.1.5 release
 
 	* fix infinite loop when parsing certain invalid magnet links
diff --git a/src/file.cpp b/src/file.cpp
index f0affe05a..1374be743 100644
--- a/src/file.cpp
+++ b/src/file.cpp
@@ -2115,17 +2115,23 @@ typedef struct _FILE_ALLOCATED_RANGE_BUFFER {
 			fstore_t f = {F_ALLOCATECONTIG, F_PEOFPOSMODE, 0, s, 0};
 			if (fcntl(native_handle(), F_PREALLOCATE, &f) < 0)
 			{
-				if (errno != ENOSPC)
+				// It appears Apple's new filesystem (APFS) does not
+				// support this control message and fails with EINVAL
+				// if so, just skip it
+				if (errno != EINVAL)
 				{
-					ec.assign(errno, system_category());
-					return false;
-				}
-				// ok, let's try to allocate non contiguous space then
-				f.fst_flags = F_ALLOCATEALL;
-				if (fcntl(native_handle(), F_PREALLOCATE, &f) < 0)
-				{
-					ec.assign(errno, system_category());
-					return false;
+					if (errno != ENOSPC)
+					{
+						ec.assign(errno, system_category());
+						return false;
+					}
+					// ok, let's try to allocate non contiguous space then
+					f.fst_flags = F_ALLOCATEALL;
+					if (fcntl(native_handle(), F_PREALLOCATE, &f) < 0)
+					{
+						ec.assign(errno, system_category());
+						return false;
+					}
 				}
 			}
 #endif // F_PREALLOCATE