X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/e7c67065c060d500eba8d073da9568db2c658aad..a39da29ac5c373f76cabbf010f75d3ada0ddbf79:/compat.c

diff --git a/compat.c b/compat.c
index 475a1fe4..16a02648 100644
--- a/compat.c
+++ b/compat.c
@@ -23,20 +23,34 @@
 #include "rsync.h"
 
 int remote_protocol = 0;
+int file_extra_cnt = 0; /* count of file-list extras that everyone gets */
 
 extern int verbose;
 extern int am_server;
+extern int am_sender;
 extern int inplace;
 extern int fuzzy_basis;
 extern int read_batch;
+extern int max_delete;
 extern int checksum_seed;
 extern int basis_dir_cnt;
 extern int prune_empty_dirs;
 extern int protocol_version;
+extern int preserve_uid;
+extern int preserve_gid;
 extern char *dest_option;
 
 void setup_protocol(int f_out,int f_in)
 {
+	if (am_sender)
+		file_extra_cnt += PTR_EXTRA_LEN;
+	else
+		file_extra_cnt++;
+	if (preserve_uid)
+		preserve_uid = ++file_extra_cnt;
+	if (preserve_gid)
+		preserve_gid = ++file_extra_cnt;
+
 	if (remote_protocol == 0) {
 		if (!read_batch)
 			write_int(f_out, protocol_version);
@@ -75,6 +89,16 @@ void setup_protocol(int f_out,int f_in)
 		exit_cleanup(RERR_PROTOCOL);
 	}
 
+	if (protocol_version < 30) {
+		if (max_delete == 0 && am_sender) {
+			rprintf(FERROR,
+			    "--max-delete=0 requires protocol 30 or higher"
+			    " (negotiated %d).\n",
+			    protocol_version);
+			exit_cleanup(RERR_PROTOCOL);
+		}
+	}
+
 	if (protocol_version < 29) {
 		if (fuzzy_basis) {
 			rprintf(FERROR,