Support new --append option.

[rsync/rsync.git] / receiver.c

diff --git a/receiver.c b/receiver.c
index abe1f66..d348cf8 100644 (file)
--- a/receiver.c
+++ b/receiver.c
@@ -45,6 +45,7 @@ extern int remove_sent_files;
 extern int module_id;
 extern int ignore_errors;
 extern int orig_umask;
+extern int append_mode;
 extern int keep_partial;
 extern int checksum_seed;
 extern int inplace;
@@ -212,6 +213,28 @@ static int receive_data(int f_in, char *fname_r, int fd_r, OFF_T size_r,
 
        sum_init(checksum_seed);
 
+       if (append_mode) {
+               OFF_T j;
+               sum.flength = (OFF_T)sum.count * sum.blength;
+               if (sum.remainder)
+                       sum.flength -= sum.blength - sum.remainder;
+               for (j = CHUNK_SIZE; j < sum.flength; j += CHUNK_SIZE) {
+                       sum_update(map_ptr(mapbuf, offset, CHUNK_SIZE),
+                                  CHUNK_SIZE);
+                       offset = j;
+               }
+               if (offset < sum.flength) {
+                       int32 len = sum.flength - offset;
+                       sum_update(map_ptr(mapbuf, offset, len), len);
+                       offset = sum.flength;
+               }
+               if (fd != -1 && do_lseek(fd, offset, SEEK_SET) != offset) {
+                       rsyserr(FERROR, errno, "lseek failed on %s",
+                               full_fname(fname));
+                       exit_cleanup(RERR_FILEIO);
+               }
+       }
+
        while ((i = recv_token(f_in, &data)) != 0) {
                if (do_progress)
                        show_progress(offset, total_size);
@@ -417,6 +440,7 @@ int recv_files(int f_in, struct file_list *flist, char *local_name)
                        send_msg(MSG_DONE, "", 0);
                        if (keep_partial && !partial_dir)
                                make_backups = 0; /* prevents double backup */
+                       append_mode = 0;
                        continue;
                }