added a --force option.

This options tells rsync to delete directories even if they are not
empty. This applies to both the --delete option and to cases where
rsync tries to copy a normal file but the destination contains a
directory of the same name. Normally rsync will refuse to do a
recursive directory deletion in such cases, by using --force the
recursive deletion will be done.

main.c

@@ -54,6 +54,7 @@ int am_root=0;
 int orig_umask=0;
 int relative_paths=0;
 int numeric_ids = 0;
+int force_delete = 0;
 
 extern int csum_length;
 
@@ -175,6 +176,9 @@ static void server_options(char **args,int *argc)
   if (delete_mode)
     args[ac++] = "--delete";
 
+  if (force_delete)
+    args[ac++] = "--force";
+
   if (numeric_ids)
     args[ac++] = "--numeric-ids";
 
@@ -439,6 +443,7 @@ static void usage(FILE *f)
   fprintf(f,"    --rsync-path PATH    specify path to rsync on the remote machine\n");
   fprintf(f,"-C, --cvs-exclude        auto ignore files in the same way CVS does\n");
   fprintf(f,"    --delete             delete files that don't exist on the sending side\n");
+  fprintf(f,"    --force              force deletion of directories even if not empty\n");
   fprintf(f,"    --numeric-ids        don't map uid/gid values by user/group name\n");
   fprintf(f,"-I, --ignore-times       don't exclude files that match length and time\n");
   fprintf(f,"-T  --temp-dir DIR       create temporary files in directory DIR\n");
@@ -454,7 +459,7 @@ static void usage(FILE *f)
 }
 
 enum {OPT_VERSION,OPT_SUFFIX,OPT_SENDER,OPT_SERVER,OPT_EXCLUDE,
-      OPT_EXCLUDE_FROM,OPT_DELETE,OPT_NUMERIC_IDS,OPT_RSYNC_PATH};
+      OPT_EXCLUDE_FROM,OPT_DELETE,OPT_NUMERIC_IDS,OPT_RSYNC_PATH,OPT_FORCE};
 
 static char *short_options = "oblLWHpguDCtcahvrRIxnSe:B:T:z";
 
@@ -463,6 +468,7 @@ static struct option long_options[] = {
   {"server",      0,     0,    OPT_SERVER},
   {"sender",      0,     0,    OPT_SENDER},
   {"delete",      0,     0,    OPT_DELETE},
+  {"force",       0,     0,    OPT_FORCE},
   {"numeric-ids", 0,     0,    OPT_NUMERIC_IDS},
   {"exclude",     1,     0,    OPT_EXCLUDE},
   {"exclude-from",1,     0,    OPT_EXCLUDE_FROM},
@@ -553,6 +559,10 @@ int main(int argc,char *argv[])
 	  delete_mode = 1;
 	  break;
 
+	case OPT_FORCE:
+	  force_delete = 1;
+	  break;
+
 	case OPT_NUMERIC_IDS:
 	  numeric_ids = 1;
 	  break;

rsync.c

@@ -60,6 +60,75 @@ static void free_sums(struct sum_struct *s)
 }
 
 
+/*
+ * delete a file or directory. If force_delet is set then delete 
+ * recursively 
+ */
+static int delete_file(char *fname)
+{
+	DIR *d;
+	struct dirent *di;
+	char buf[MAXPATHLEN];
+	extern int force_delete;
+	struct stat st;
+	int ret;
+
+	if (do_unlink(fname) == 0 || errno == ENOENT) return 0;
+
+#if SUPPORT_LINKS
+	ret = lstat(fname, &st);
+#else
+	ret = stat(fname, &st);
+#endif
+	if (ret) {
+		fprintf(FERROR,"stat(%s) : %s\n", fname, strerror(errno));
+		return -1;
+	}
+
+	if (!S_ISDIR(st.st_mode)) {
+		fprintf(FERROR,"unlink(%s) : %s\n", fname, strerror(errno));
+		return -1;
+	}
+
+	if (do_rmdir(fname) == 0 || errno == ENOENT) return 0;
+	if (!force_delete || errno != ENOTEMPTY) {
+		fprintf(FERROR,"rmdir(%s) : %s\n", fname, strerror(errno));
+		return -1;
+	}
+
+	/* now we do a recsursive delete on the directory ... */
+	d = opendir(fname);
+	if (!d) {
+		fprintf(FERROR,"opendir(%s): %s\n",
+			fname,strerror(errno));
+		return -1;
+	}
+
+	for (di=readdir(d); di; di=readdir(d)) {
+		if (strcmp(di->d_name,".")==0 ||
+		    strcmp(di->d_name,"..")==0)
+			continue;
+		strncpy(buf, fname, (MAXPATHLEN-strlen(di->d_name))-2);
+		strcat(buf, "/");
+		strcat(buf, di->d_name);
+		buf[MAXPATHLEN-1] = 0;
+		if (verbose > 0)
+			fprintf(FINFO,"deleting %s\n", buf);
+		if (delete_file(buf) != 0) {
+			closedir(d);
+			return -1;
+		}
+	}	
+
+	closedir(d);
+	
+	if (do_rmdir(fname) != 0) {
+		fprintf(FERROR,"rmdir(%s) : %s\n", fname, strerror(errno));
+		return -1;
+	}
+
+	return 0;
+}
 
 /*
   send a sums struct down a fd
@@ -337,7 +406,7 @@ void recv_generator(char *fname,struct file_list *flist,int i,int f_out)
 	}
       }
     }
-    do_unlink(fname);
+    delete_file(fname);
     if (do_symlink(file->link,fname) != 0) {
       fprintf(FERROR,"link %s -> %s : %s\n",
 	      fname,file->link,strerror(errno));
@@ -356,7 +425,7 @@ void recv_generator(char *fname,struct file_list *flist,int i,int f_out)
     if (statret != 0 || 
 	st.st_mode != file->mode ||
 	st.st_rdev != file->rdev) {	
-      do_unlink(fname);
+      delete_file(fname);
       if (verbose > 2)
 	fprintf(FERROR,"mknod(%s,0%o,0x%x)\n",
 		fname,(int)file->mode,(int)file->rdev);
@@ -397,15 +466,7 @@ void recv_generator(char *fname,struct file_list *flist,int i,int f_out)
   }
 
   if (!S_ISREG(st.st_mode)) {
-    /* its not a regular file on the receiving end, but it is on the
-       sending end. If its a directory then skip it (too dangerous to
-       do a recursive deletion??) otherwise try to unlink it */
-    if (S_ISDIR(st.st_mode)) {
-      fprintf(FERROR,"ERROR: %s is a directory\n",fname);
-      return;
-    }
-    if (do_unlink(fname) != 0) {
-      fprintf(FERROR,"%s : not a regular file (generator)\n",fname);
+    if (delete_file(fname) != 0) {
       return;
     }