The improved --xattrs option is landing on the trunk.
[rsync/rsync.git] / compat.c
index e90fa83..3f4bd45 100644 (file)
--- a/compat.c
+++ b/compat.c
@@ -1,41 +1,74 @@
-/* 
-   Copyright (C) Andrew Tridgell 1996
-   Copyright (C) Paul Mackerras 1996
-   
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 2 of the License, or
-   (at your option) any later version.
-   
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-   
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
-/**
- * @file compat.c
- *
+/*
  * Compatibility routines for older rsync protocol versions.
- **/
+ *
+ * Copyright (C) Andrew Tridgell 1996
+ * Copyright (C) Paul Mackerras 1996
+ * Copyright (C) 2004-2007 Wayne Davison
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
+ */
 
 #include "rsync.h"
 
 int remote_protocol = 0;
+int file_extra_cnt = 0; /* count of file-list extras that everyone gets */
+int inc_recurse = 0;
 
 extern int verbose;
 extern int am_server;
 extern int am_sender;
+extern int local_server;
+extern int inplace;
+extern int recurse;
+extern int allow_inc_recurse;
+extern int fuzzy_basis;
 extern int read_batch;
+extern int max_delete;
+extern int delay_updates;
 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 int preserve_acls;
+extern int preserve_xattrs;
+extern int preserve_hard_links;
+extern int need_messages_from_generator;
+extern int delete_mode, delete_before, delete_during, delete_after;
+extern int delete_excluded;
+extern int make_backups;
+extern char *backup_dir, *backup_suffix;
+extern char *partial_dir;
+extern char *dest_option;
+extern struct filter_list_struct filter_list;
 
 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 (preserve_acls && !am_sender)
+               preserve_acls = ++file_extra_cnt;
+       if (preserve_xattrs)
+               preserve_xattrs = ++file_extra_cnt;
+
        if (remote_protocol == 0) {
                if (!read_batch)
                        write_int(f_out, protocol_version);
@@ -55,7 +88,7 @@ void setup_protocol(int f_out,int f_in)
        }
        if (remote_protocol < MIN_PROTOCOL_VERSION
         || remote_protocol > MAX_PROTOCOL_VERSION) {
-               rprintf(FERROR,"protocol version mismatch - is your shell clean?\n");
+               rprintf(FERROR,"protocol version mismatch -- is your shell clean?\n");
                rprintf(FERROR,"(see the rsync man page for an explanation)\n");
                exit_cleanup(RERR_PROTOCOL);
        }
@@ -74,6 +107,84 @@ 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 (preserve_acls) {
+                       rprintf(FERROR,
+                           "--acls requires protocol 30 or higher"
+                           " (negotiated %d).\n",
+                           protocol_version);
+                       exit_cleanup(RERR_PROTOCOL);
+               }
+               if (preserve_xattrs) {
+                       rprintf(FERROR,
+                           "--xattrs requires protocol 30 or higher"
+                           " (negotiated %d).\n",
+                           protocol_version);
+                       exit_cleanup(RERR_PROTOCOL);
+               }
+       }
+
+       if (delete_mode && !(delete_before+delete_during+delete_after)) {
+               if (protocol_version < 30)
+                       delete_before = 1;
+               else
+                       delete_during = 1;
+       }
+
+       if (protocol_version < 29) {
+               if (fuzzy_basis) {
+                       rprintf(FERROR,
+                           "--fuzzy requires protocol 29 or higher"
+                           " (negotiated %d).\n",
+                           protocol_version);
+                       exit_cleanup(RERR_PROTOCOL);
+               }
+
+               if (basis_dir_cnt && inplace) {
+                       rprintf(FERROR,
+                           "%s with --inplace requires protocol 29 or higher"
+                           " (negotiated %d).\n",
+                           dest_option, protocol_version);
+                       exit_cleanup(RERR_PROTOCOL);
+               }
+
+               if (basis_dir_cnt > 1) {
+                       rprintf(FERROR,
+                           "Using more than one %s option requires protocol"
+                           " 29 or higher (negotiated %d).\n",
+                           dest_option, protocol_version);
+                       exit_cleanup(RERR_PROTOCOL);
+               }
+
+               if (prune_empty_dirs) {
+                       rprintf(FERROR,
+                           "--prune-empty-dirs requires protocol 29 or higher"
+                           " (negotiated %d).\n",
+                           protocol_version);
+                       exit_cleanup(RERR_PROTOCOL);
+               }
+       } else if (protocol_version >= 30) {
+               if (recurse && allow_inc_recurse && !preserve_hard_links
+                && !delete_before && !delete_after && !delay_updates
+                && !prune_empty_dirs)
+                       inc_recurse = 1;
+               need_messages_from_generator = 1;
+       }
+
+       if (partial_dir && *partial_dir != '/' && (!am_server || local_server)) {
+               int flags = MATCHFLG_NO_PREFIXES | MATCHFLG_DIRECTORY;
+               if (!am_sender || protocol_version >= 30)
+                       flags |= MATCHFLG_PERISHABLE;
+               parse_rule(&filter_list, partial_dir, flags, 0);
+       }
+
        if (am_server) {
                if (!checksum_seed)
                        checksum_seed = time(NULL);