classmount.c

来自「A part of LFS.This is a server software.」· C语言 代码 · 共 64 行

/* $Id: classmount.C,v 1.2 2001/09/19 04:36:18 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 "classfscli.h"
#include "classfs_prot.h"

static ptr<axprt_unix> cfsx;
static ptr<aclnt> cfsc;

static void
cfsdeof ()
{
  fatal << "EOF from classfsd\n";
}

static void
classmount_1 (ref<int> resp, cbi cb, clnt_stat stat)
{
  if (stat)
    warn << "classfsd: " << stat << "\n";
  (*cb) (*resp);
}

void
classmount (int fd, const rpc_bytes<64> &fh, str name, cbi cb)
{
  if (!cfsc) {
    cfsx = axprt_unix::alloc (suidgetfd_required ("classfs"));
    cfsc = aclnt::alloc (cfsx, classfs_prog_1);
    cfsc->seteofcb (wrap (cfsdeof));
  }

  classfs_mount_arg arg;
  if (name.len () > arg.name.maxsize) {
    (*cb) (ENAMETOOLONG);
    return;
  }
  arg.name = name;
  arg.fh = fh;
  ref<int> resp (New refcounted<int>);
  cfsx->sendfd (fd, false);
  cfsc->call (CLASSFSPROC_MOUNT, &arg, resp, wrap (classmount_1, resp, cb));
}