X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?p=chiark-utils.git;a=blobdiff_plain;f=cprogs%2Frcopy-repeatedly.c;h=6468e80cfadfa7c273333b391ce2981a3c2481ab;hp=8a760e7efafb930057991087aff44d78c8ea2091;hb=d8d60f17dad9d2e9a01729d9f21b0a99f1aeb4ce;hpb=ad24e88eee844743e6834b4347720d08607b4d81

diff --git a/cprogs/rcopy-repeatedly.c b/cprogs/rcopy-repeatedly.c
index 8a760e7..6468e80 100644
--- a/cprogs/rcopy-repeatedly.c
+++ b/cprogs/rcopy-repeatedly.c
@@ -1,7 +1,50 @@
 /*
  * rcopy-repeatedly
+ *
+ *   You say  rcopy-repeatedly local-file user@host:remote-file
+ *   and it polls for changes to local-file and copies them to
+ *   remote-file.  rcopy-repeatedly must be installed at the far end.
+ *   You can copy in either direction but not between two remote
+ *   locations.
+ *
+ *   Limitations:
+ *    * Cannot cope with files which are modified between us opening
+ *      and statting them for the first time; if the file shrinks
+ *      we may bomb out.  Workaround: use rename-in-place.
+ *    * When transferring large files, bandwidth limiter will
+ *      be `lumpy' as the whole file is transferred and then we
+ *      sleep.
+ *    * Cannot copy between two local files.  Workaround: a symlink
+ *      (but presumably there was some reason you weren't doing that)
+ *    * No ability to synchronise more than just exactly one file
+ *    * Polls.  It would be nice to use inotify or something.
+ *
+ *   Inherent limitations:
+ *    * Can only copy plain files.
+ *
+ *   See the --help for options.
  */     
-  
+/*
+ * rcopy-repeatedly is
+ *  Copyright (C) 2008 Ian Jackson <ian@davenant.greenend.org.uk>
+ * and the option parser we use is
+ *  Copyright (C) 1994,1995 Ian Jackson <ian@davenant.greenend.org.uk>
+ *
+ * This 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 3,
+ * or (at your option) any later version.
+ *
+ * This 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 file; if not, consult the Free Software
+ * Foundation's website at www.fsf.org, or the GNU Project website at
+ * www.gnu.org.
+ */
 /*
  * protocol is:
  *   server sends banner
@@ -219,12 +262,9 @@ static void bandlimit_sendend(uint64_t bytes, int *interval_usec_update) {
 static void copyfile(FILE *sf, copyfile_die_fn *sdie, const char *sxi,
 		     FILE *df, copyfile_die_fn *ddie, const char *dxi,
 		     uint64_t lstart, int amsender) {
-  struct timespec ts_last;
   int now, r;
   uint64_t l=lstart, done=0;
 
-  ts_last= ts_sendstart;
-
   while (l>0) {
     now= l < sizeof(mainbuf) ? l : sizeof(mainbuf);
     if (now > txblocksz) now= txblocksz;