X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/78286a03d196efeed754aa4c1faa571f5dbea342..b223d96bf0d040cfa445a45213fc517ab8389785:/rsync.h

diff --git a/rsync.h b/rsync.h
index 79402cd7..99c7d6c4 100644
--- a/rsync.h
+++ b/rsync.h
@@ -665,6 +665,21 @@ struct ht_int64_node {
 #define ACLS_NEED_MASK 1
 #endif
 
+#if defined HAVE_FALLOCATE || HAVE_SYS_FALLOCATE
+#include <linux/falloc.h>
+#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;