1 files changed, 124 insertions, 0 deletions
diff --git a/hostmux/leaf.c b/hostmux/leaf.c
new file mode 100644
index 00000000..fb53622f
--- /dev/null
+++ b/hostmux/leaf.c
@@ -0,0 +1,124 @@
+/* Hostmux leaf node functions
+
+   Copyright (C) 1997,2002 Free Software Foundation, Inc.
+   Written by Miles Bader <miles@gnu.org>
+   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 this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA. */
+
+#include <string.h>
+#include <argz.h>
+
+#include "hostmux.h"
+
+/* Read the contents of NODE (a symlink), for USER, into BUF. */
+error_t
+netfs_attempt_readlink (struct iouser *user, struct node *node, char *buf)
+{
+  assert (node->nn->name);
+  memcpy (buf, node->nn->name->canon, node->nn_stat.st_size);
+  fshelp_touch (&node->nn_stat, TOUCH_ATIME, hostmux_maptime);
+  return 0;
+}
+
+/* For locked node NODE with S_IPTRANS set in its mode, look up the name of
+   its translator.  Store the name into newly malloced storage, and return it
+   in *ARGZ; set *ARGZ_LEN to the total length.
+
+   For hostmux, this creates a new translator string by instantiating the
+   global translator template.  */
+error_t
+netfs_get_translator (struct node *node, char **argz, size_t *argz_len)
+{
+  if (! node->nn->name)
+    return EINVAL;
+  else
+    {
+      error_t err = 0;
+      unsigned replace_count = 0;
+      struct hostmux *mux = node->nn->mux;
+
+      *argz = 0;			/* Initialize return value.  */
+      *argz_len = 0;
+
+      /* Return a copy of MUX's translator template, with occurrences of
+	 HOST_PAT replaced by the canonical hostname.  */
+      err = argz_append (argz, argz_len,
+			 mux->trans_template, mux->trans_template_len);
+      if (! err)
+	err = argz_replace (argz, argz_len,
+			    mux->host_pat, node->nn->name->canon,
+			    &replace_count);
+
+      if (!err && replace_count == 0)
+	/* Default, if no instances of HOST_PAT occur, is to append the
+	   hostname. */
+	err = argz_add (argz, argz_len, node->nn->name->canon);
+
+      if (err && *argz_len > 0)
+	free (*argz);
+
+      return err;
+    }
+}
+
+/* Create a new leaf node in MUX, with a name NAME, and return the new node
+   with a single reference in NODE.  */
+error_t
+create_host_node (struct hostmux *mux, struct hostmux_name *name,
+		  struct node **node)
+{
+  struct node *new;
+  struct netnode *nn = malloc (sizeof (struct netnode));
+
+  if (! nn)
+    return ENOMEM;
+
+  nn->mux = mux;
+  nn->name = name;
+
+  new = netfs_make_node (nn);
+  if (! new)
+    {
+      free (nn);
+      return ENOMEM;
+    }
+
+  new->nn_stat = mux->stat_template;
+  new->nn_stat.st_ino = name->fileno;
+
+  if (strcmp (name->name, name->canon) == 0)
+    /* The real name of the host, make a real node.  */
+    {
+      new->nn_stat.st_mode = (S_IFREG | S_IPTRANS | 0666);
+      new->nn_stat.st_size = 0;
+    }
+  else
+    /* An alias for this host, make a symlink instead.  */
+    {
+      new->nn_stat.st_mode = (S_IFLNK | 0666);
+      new->nn_stat.st_size = strlen (name->canon);
+    }
+  new->nn_translated = new->nn_stat.st_mode;
+
+  fshelp_touch (&new->nn_stat, TOUCH_ATIME|TOUCH_MTIME|TOUCH_CTIME,
+		hostmux_maptime);
+
+  name->node = new;
+
+  *node = new;
+
+  return 0;
+}