1 files changed, 74 insertions, 0 deletions
diff --git a/libdiskfs/fsys-get-children.c b/libdiskfs/fsys-get-children.c
new file mode 100644
index 00000000..7e2a37b1
--- /dev/null
+++ b/libdiskfs/fsys-get-children.c
@@ -0,0 +1,74 @@
+/* fsys_get_children
+
+   Copyright (C) 2017 Free Software Foundation, Inc.
+
+   This file is part of the GNU Hurd.
+
+   The GNU Hurd 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, or (at your option)
+   any later version.
+
+   The GNU Hurd 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 the GNU Hurd.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "priv.h"
+#include "fsys_S.h"
+
+#include <argz.h>
+
+/* Return any active child translators.  NAMES is an argz vector
+   containing file names relative to the root of the translator.
+   CONTROLS is an array containing the corresponding control ports.
+   Note that translators are bound to nodes, and nodes can have zero
+   or more links in the file system, therefore there is no guarantee
+   that a translators name refers to an existing link in the file
+   system.  */
+error_t
+diskfs_S_fsys_get_children (struct diskfs_control *fsys,
+                            mach_port_t reply,
+                            mach_msg_type_name_t replytype,
+			    char **names,
+			    mach_msg_type_number_t *names_len,
+                            mach_port_t **controls,
+                            mach_msg_type_name_t *controlsPoly,
+			    mach_msg_type_number_t *controlsCnt)
+{
+  error_t err;
+  char *n = NULL;
+  size_t n_len = 0;
+  mach_port_t *c;
+  size_t c_count;
+
+  if (! fsys)
+    return EOPNOTSUPP;
+
+
+  err = fshelp_get_active_translators (&n, &n_len, &c, &c_count);
+  if (err)
+    goto errout;
+
+  err = iohelp_return_malloced_buffer (n, n_len, names, names_len);
+  if (err)
+    goto errout;
+  n = NULL; /* n was freed by iohelp_return_malloced_buffer. */
+
+  err = iohelp_return_malloced_buffer ((char *) c, c_count * sizeof *c,
+                                       (char **) controls, controlsCnt);
+  if (err)
+    goto errout;
+  c = NULL; /* c was freed by iohelp_return_malloced_buffer. */
+
+  *controlsPoly = MACH_MSG_TYPE_MOVE_SEND;
+  *controlsCnt = c_count;
+
+ errout:
+  free (n);
+  free (c);
+  return err;
+}