X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/accc091fe9ebbb602bcf692c577486e62011d5c1..28b519c93b6db30b6520d46f8cd65160213fddd2:/compat.c

diff --git a/compat.c b/compat.c
index 6655acd4..45073d3d 100644
--- a/compat.c
+++ b/compat.c
@@ -24,6 +24,8 @@
 int remote_protocol = 0;
 int file_extra_cnt = 0; /* count of file-list extras that everyone gets */
 int inc_recurse = 0;
+int compat_flags = 0;
+int use_safe_inc_flist = 0;
 
 extern int am_server;
 extern int am_sender;
@@ -32,6 +34,7 @@ extern int inplace;
 extern int recurse;
 extern int use_qsort;
 extern int allow_inc_recurse;
+extern int preallocate_files;
 extern int append_mode;
 extern int fuzzy_basis;
 extern int read_batch;
@@ -72,6 +75,7 @@ int filesfrom_convert = 0;
 #define CF_INC_RECURSE	 (1<<0)
 #define CF_SYMLINK_TIMES (1<<1)
 #define CF_SYMLINK_ICONV (1<<2)
+#define CF_SAFE_FLIST	 (1<<3)
 
 static const char *client_info;
 
@@ -186,6 +190,14 @@ void setup_protocol(int f_out,int f_in)
 	if (read_batch)
 		check_batch_flags();
 
+#ifndef SUPPORT_PREALLOCATION
+	if (preallocate_files && !am_sender) {
+		rprintf(FERROR, "preallocation is not supported on this %s\n",
+			am_server ? "Server" : "Client");
+		exit_cleanup(RERR_SYNTAX);
+	}
+#endif
+
 	if (protocol_version < 30) {
 		if (append_mode == 1)
 			append_mode = 2;
@@ -245,7 +257,6 @@ void setup_protocol(int f_out,int f_in)
 			exit_cleanup(RERR_PROTOCOL);
 		}
 	} else if (protocol_version >= 30) {
-		int compat_flags;
 		if (am_server) {
 			compat_flags = allow_inc_recurse ? CF_INC_RECURSE : 0;
 #ifdef CAN_SET_SYMLINK_TIMES
@@ -254,6 +265,8 @@ void setup_protocol(int f_out,int f_in)
 #ifdef ICONV_OPTION
 			compat_flags |= CF_SYMLINK_ICONV;
 #endif
+			if (local_server || strchr(client_info, 'f') != NULL)
+				compat_flags |= CF_SAFE_FLIST;
 			write_byte(f_out, compat_flags);
 		} else
 			compat_flags = read_byte(f_in);
@@ -280,6 +293,7 @@ void setup_protocol(int f_out,int f_in)
 			    read_batch ? "batch file" : "connection");
 			exit_cleanup(RERR_SYNTAX);
 		}
+		use_safe_inc_flist = (compat_flags & CF_SAFE_FLIST) || protocol_version >= 31;
 		need_messages_from_generator = 1;
 #ifdef CAN_SET_SYMLINK_TIMES
 	} else if (!am_sender) {