Initial revision

1 files changed, 86 insertions, 0 deletions

diff --git a/nfs/mount.c b/nfs/mount.c
new file mode 100644
index 00000000..45880871
--- /dev/null
+++ b/nfs/mount.c
@@ -0,0 +1,86 @@
+/* 
+   Copyright (C) 1995 Free Software Foundation, Inc.
+   Written by Michael I. Bushnell, p/BSG.
+
+   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. */
+
+/* Using the mount protocol, lookup NAME at host HOST.
+   Return a netnode for or null for an error. */
+struct netnode *
+mount_root (char *name, char *host)
+{
+  error_t err;
+  struct sockaddr_in addr;
+  struct hostent *h;
+  struct servent *s;
+  int *p;
+  void *rpcbuf;
+  error_t err;
+  int port;
+
+  /* Lookup the portmapper port number */
+  s = getservbyname ("portmap", "udp");
+  if (!s)
+    {
+      fprintf (stderr, "portmap/udp: unknown service\n");
+      return 0;
+    }
+
+  /* Lookup the host */
+  h = gethostbyname (host);
+  if (!h)
+    {
+      herror (host);
+      return 0;
+    }
+  
+  addr->sin_family = h->h_addrtype;
+  bcopy (h->h_addr_list[0], &addr.sin_addr, h->h_length);
+  addr->sin_port = htons (s->s_port);
+  
+  /* Formulate and send a PMAPPROC_GETPORT request
+     to lookup the mount program on the server.  */
+  p = pmap_initialize_rpc (PMAPPROC_GETPORT, &rpcbuf);
+  *p++ = htonl (MOUNT_RPC_PROGRAM);
+  *p++ = htonl (MOUNT_RPC_VERSION);
+  *p++ = htonl (IPPROTO_UDP);
+  *p++ = htonl (0);
+  err = conduct_rpc (&rpcbuf, &p);
+  if (err)
+    {
+      perror ("portmap of mount");
+      return 0;
+    }
+  
+  /* Fetch the reply port and clean the RPC  */
+  port = ntohl (*p++);
+  addr->sin_port = htons (port); /* note that htons and ntohl are not inverses  */
+  free (rpcbuf);
+  
+  /* Now talking to the mount program, fetch the file handle
+     for the root. */
+  
+  p = mount_initialize_rpc (MOUNTPROC_MNT, &rpcbuf);
+  p = xdr_encode_string (p, name);
+  err = conduct_rpc (&rpcbuf, &p);
+  if (err)
+    {
+      perror (name);
+      return 0;
+    }
+  
+