MOUNTD(8)

NAME
       mountd - NFS mount daemon

SYNOPSIS
       /usr/sbin/rpc.mountd [ -f exports-file ] [ -d facility ]
       [ -P port ] [ -Dhnprv ] [ --debug ]
       [ --exports-file=file ] [ --help ] [ --allow-non-root ]
       [ --re-export ] [ --version ]

DESCRIPTION
       The mountd program is an NFS mount daemon. When  receiving
       a  MOUNT request from an NFS client, it checks the request
       against the  list  of  exported  file  systems  listen  in
       /etc/exports.   If  the  client  is permitted to mount the
       file  system,  mountd  creates  a  file  handle  for   the
       requested  directory,  and adds an entry /etc/rmtab.  Upon
       receipt of an UMOUNT  request,  it  removes  the  client's
       entry  from rmtab.  Note, however, that a client may still
       be able to use the file handle after  the  UMOUNT  request
       (for  instance,  if the client mounts the same remote file
       system on two different mount  points).  Similarly,  if  a
       client  reboots  without  notifying  mountd, a stale entry
       will remain in rmtab.

   Running from inetd
       mountd can be started from inetd  rather  than  at  system
       boot   time   by   adding   the  following  two  lines  to
       /etc/inetd.conf:

       mount/1-2 dgram  rpc/udp wait  root  /usr/sbin/rpc.mountd rpc.mountd
       mount/1-2 stream rpc/tcp wait  root  /usr/sbin/rpc.mountd rpc.mountd

       When run from inetd, mountd will terminate after a certain
       period of inactivity.

OPTIONS
       -f or --exports-file
              This option specifies the exports file, listing the
              clients that this server is prepared to  serve  and
              parameters   to  apply  to  each  such  mount  (see
              exports(5)).  By  default  exports  are  read  from
              /etc/exports.

       -d or --debug
              Log  each  transaction verbosely to standard error.
              Valid log facilities are call for  the  logging  of
              all  calls, auth for client authentication, fhcache
              for operations of the file handle cache, and  rmtab
              for  manipulation  of  /etc/rmtab.  By default, log
              output is sent to syslogd unless the daemon runs in
              the foreground.

       -F or --foreground
              Unlike  normal in operation, mountd will not detach
              from the terminal  when  given  this  option.  When
              debugging is requested, it will be sent to standard
              error.

       -h or --help
              Provide a short help summary.

       -n or --allow-non-root
              Allow incoming mount requests to be honored even if
              they do not originate from reserved IP ports.  Some
              older  NFS  client  implementations  require  this.
              Some newer NFS client implementations don't believe
              in reserved port checking.

       -P portnum or --port portnum
              Makes mountd listen on port portnum instead of some
              random  port. By default, mountd will listen on the
              mount/udp port specified in /etc/services,  or,  if
              that  is  undefined,  on some arbitrary port number
              below 1024.

       -p or --promiscuous
              Put the server into promiscuous mode where it  will
              serve any host on the network.

       -r or --re-export
              Allow  imported  NFS  or  SMB  file-systems  to  be
              exported.  This can be used to turn a machine  into
              an NFS/SMB multiplier.  Caution should be used when
              re-exporting loopback  mounts  because  re-entering
              the mount point will result in deadlock between the
              client file system code and the server.

       -v or --version
              Report the current version number of the program.

BUGS
       The information in /etc/rmtab  is  inaccurate  more  often
       than not.

SIGNALS
       When  receiving  a SIGHUP, mountd will re-read the exports
       file. Note that to make export changes  take  effect,  you
       have to send nfsd a SIGHUP as well.

FILES
       /etc/exports
       /etc/rmtab

SEE ALSO
       exports(5) nfsd(8) ugidd(8C) showmount(8).