classfscli.h

A part of LFS.This is a server software.

// -*-c++-*-
/* $Id: classfscli.h,v 1.10 2003/02/26 05:34:21 dm Exp $ */

/*
 *
 * Copyright (C) 2001 David Mazieres ([e-mail])
 *
 * This program 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.
 *
 * This program 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 02111-1307
 * USA
 *
 */

#include "sfsconnect.h"
#include "list.h"

#define fattr3 fattr3exp

/*
 * sfsuclnt allows you to access a remote SFS server as an NFS client.
 * The user must be running an sfsagent before you allocate this class
 * if you want to access the remote file system with more than
 * anonymous permissions.
 */
class sfsuclnt : public virtual refcount {
public:
  typedef callback<void, ptr<sfsuclnt>, str>::ref alloccb_t;
private:
  bool authlock;
  u_int64_t seqno;
  void alloc_2 (u_int64_t devno, sfsuclnt::alloccb_t cb, str devdb);
  void alloc_1 (str path, alloccb_t cb, u_int64_t devno, str srv, str rpath);
  void connect_1 (alloccb_t::ptr cb, ptr<sfscon> sc, str err);
  void connect (str srvname);
  void setattrs (u_int32_t proc, void *resp, ref<ex_getattr3res> ap,
		 ex_post_op_attr *poap, aclnt_cb cb, clnt_stat stat);
  void getreply (u_int32_t proc, ptr<nfs_fh3> fhp, void *resp,
		 aclnt_cb cb, clnt_stat stat);
protected:
  sfsuclnt ();
  ~sfsuclnt ();
  void eof ();
  void nfscbdispatch (svccb *sbp);
public:
  ptr<sfscon> sc;
  nfs_fh3 rootfh;
  u_int32_t authno;
  AUTH *auth;
  ptr<aclnt> nfsc;
  ptr<aclnt> sfsc;
  ptr<asrv> nfscbs;
  list_entry<sfsuclnt> link;

  void setauth (u_int32_t authno);
  void doauth (alloccb_t::ptr cb);

  /* Make an NFS call to the SFS server */
  void call (u_int32_t nfs_procno, const void *argp, void *resp, aclnt_cb cb);

  /* Allocate a new sfsuclnt structure.  Alloc takes a callback with
   * two arguments.  The first is a ptr<sfsuclnt>, which is NULL on a
   * failure.  The second is a str with an error message, or NULL on
   * success. */
  static void alloc (str path, alloccb_t cb);
};

/*
 * classmount creates an NFS mount pointpoint.
 *   fd - the UDP socket your NFS server is listening on
 *   fh - the file handle of the root of the file system
 *   name - file system will pear as /classfs/name
 *   cb - callback with int when mount is complete (0 ok, errno otherwise)
 */
void classmount (int fd, const rpc_bytes<64> &fh, str name, cbi cb);

/* The following code is commented out in this header file because it
 * also appears in nfstrans.h.  However, it is highly relevant to the
 * assignment, and thus included here for your reference.
 */
#if 0
/*
 * nfs3_getattrinfo returns a vector of all the file attributes in an
 * NFS3 call result.  It groups file attributes (fattr3 structures)
 * with file handles and associated pre-operation attributes
 * (wcc_attr), if they are present.
 *
 * Note that if optional attributes are not present in an NFS3 reply,
 * the fattr field will be NULL.  If you wish to clear the
 * pre-operation attributes (for instance because you need to crrect
 * them based on the post-operation attributes, and fattr is NULL),
 * you can do this with:  wdata->before.set_present (false);
 */
struct attrinfo {
  nfs_fh3 *fh;
  fattr3 *fattr;
  wcc_attr *wattr;
  wcc_data *wdata;

  attrinfo ();
  void set_wcc (wcc_data *wd);
};
typedef vec<attrinfo, 2> attrvec;
void nfs3_getattrinfo (attrvec *avp, u_int32_t proc, void *argp, void *resp);
#endif /* 0 */