dumbfs.c

来自「A part of LFS.This is a server software.」· C语言 代码 · 共 87 行

/* $Id: dumbfs.C,v 1.8 2001/10/08 04:14:49 dm Exp $ */

#include "classfscli.h"
#include "nfsserv.h"
#include "nfstrans.h"
#include "rxx.h"

str origpath;
str mntname;

ptr<sfsuclnt> c;
ptr<nfsserv_udp> nfss_udp = New refcounted<nfsserv_udp>;
ptr<nfsserv_fixup> nfss = New refcounted<nfsserv_fixup> (nfss_udp);

static void
reply (nfscall *nc, clnt_stat stat)
{
  if (stat) {
    warn << "NFS server: " << stat << "\n";
    nc->reject (SYSTEM_ERR);
    return;
  }

  attrvec av;
  nfs3_getattrinfo (&av, nc->proc (), nc->getvoidarg (), nc->getvoidres ());
  for (attrinfo *ap = av.base (); ap < av.lim (); ap++)
    if (ap->fattr && ap->fattr->type == NF3REG) // Regular files
      if (ap->wattr)
	warn << "size: " << ap->wattr->size << " -> "
	     << ap->fattr->size << "\n";

  nc->reply (nc->getvoidres ());
}

void
dispatch (nfscall *nc)
{
  c->call (nc->proc (), nc->getvoidarg (), nc->getvoidres (),
	   wrap (reply, nc));
}

static void
mounted (int err)
{
  if (err)
    fatal << "classfsd reports: " << strerror (err) << "\n";
}

static void
gotcli (ptr<sfsuclnt> suc, str err)
{
  if (!suc)
    fatal << err << "\n";
  c = suc;
  nfss->setcb (wrap (dispatch));
  classmount (nfss_udp->getfd (), c->rootfh.data, mntname, wrap (mounted));
}

static void
usage ()
{
  warnx << "usage: " << progname << " /path [name]\n";
  exit (1);
}

/* Regular expression to get last component of a path */
static rxx basenamerx ("([^/]+)/*$");

int
main (int argc, char **argv)
{
  setprogname (argv[0]);
  if (argc < 2 || argc > 3)
    usage ();

  origpath = argv[1];
  if (argc == 3)
    mntname = argv[2];
  else if (basenamerx.search (origpath))
    mntname = basenamerx[1];
  else
    usage ();

  sfsuclnt::alloc (origpath, wrap (gotcli));
  amain ();
}