X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/78286a03d196efeed754aa4c1faa571f5dbea342..ac30d22ae5bd4e1a1282e401425fe28cec6a08bb:/rsync.h

diff --git a/rsync.h b/rsync.h
index 79402cd7..84d1287c 100644
--- a/rsync.h
+++ b/rsync.h
@@ -665,6 +665,23 @@ struct ht_int64_node {
 #define ACLS_NEED_MASK 1
 #endif
 
+#if defined HAVE_FALLOCATE || HAVE_SYS_FALLOCATE
+#ifdef HAVE_LINUX_FALLOC_H
+#include <linux/falloc.h>
+#endif
+#ifdef FALLOC_FL_KEEP_SIZE
+#define SUPPORT_PREALLOCATION 1
+#elif defined HAVE_FTRUNCATE
+#define SUPPORT_PREALLOCATION 1
+#define PREALLOCATE_NEEDS_TRUNCATE 1
+#endif
+#else /* !fallocate */
+#if defined HAVE_EFFICIENT_POSIX_FALLOCATE && defined HAVE_FTRUNCATE
+#define SUPPORT_PREALLOCATION 1
+#define PREALLOCATE_NEEDS_TRUNCATE 1
+#endif
+#endif
+
 union file_extras {
 	int32 num;
 	uint32 unum;