Add --link-dest option from J.W. Schultz.

[rsync/rsync.git] / generator.c

diff --git a/generator.c b/generator.c
index dd3eef6..f3849a0 100644 (file)
--- a/generator.c
+++ b/generator.c
@@ -41,6 +41,7 @@ extern int remote_version;
 extern int always_checksum;
 extern int modify_window;
 extern char *compare_dest;
+extern int link_dest;
 
 
 /* choose whether to skip a particular file */
@@ -50,6 +51,15 @@ static int skip_file(char *fname,
        if (st->st_size != file->length) {
                return 0;
        }
+       if (link_dest) {
+               if((st->st_mode & ~_S_IFMT) !=  (file->mode & ~_S_IFMT)) {
+                       return 0;
+               }
+               if (st->st_uid != file->uid || st->st_gid != file->gid) {
+                       return 0;
+               }
+       }
+
        
        /* if always checksum is set then we use the checksum instead 
           of the file time to determine whether to sync */
@@ -356,6 +366,18 @@ void recv_generator(char *fname, struct file_list *flist, int i, int f_out)
                        statret = -1;
                if (statret == -1)
                        errno = saveerrno;
+#if HAVE_LINK
+               else if (link_dest && !dry_run) {
+                       if (do_link(fnamecmpbuf, fname) != 0) {
+                               if (verbose > 0)
+                                       rprintf(FINFO,"link %s => %s : %s\n",
+                                               fnamecmpbuf,
+                                               fname,
+                                               strerror(errno));
+                       }
+                       fnamecmp = fnamecmpbuf;
+               }
+#endif
                else
                        fnamecmp = fnamecmpbuf;
        }