bsd/man/man2/shutdown.2

   1 .\"     $NetBSD: shutdown.2,v 1.5 1995/02/27 12:37:11 cgd Exp $
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  34 .\"     @(#)shutdown.2  8.1 (Berkeley) 6/4/93
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  36 .Dd March 18, 2015
  37 .Dt SHUTDOWN 2
  38 .Os BSD 4.2
  39 .Sh NAME
  40 .Nm shutdown
  41 .Nd shut down part of a full-duplex connection
  42 .Sh SYNOPSIS
  43 .Fd #include <sys/socket.h>
  44 .Ft int
  45 .Fo shutdown
  46 .Fa "int socket"
  47 .Fa "int how"
  48 .Fc
  49 .Sh DESCRIPTION
  50 The
  51 .Fn shutdown
  52 call causes all or part of a full-duplex connection on
  53 the socket associated with
  54 .Fa socket
  55 to be shut down.
  56 If
  57 .Fa how
  58 is
  59 .Dv SHUT_RD ,
  60 further receives will be disallowed.
  61 If
  62 .Fa how
  63 is
  64 .Dv SHUT_WR ,
  65 further sends will be disallowed.
  66 If
  67 .Fa how
  68 is
  69 .Dv SHUT_RDWR ,
  70 further sends and receives will be disallowed.
  71 .Sh RETURN VALUES
  72 .Rv -std shutdown
  73 .Sh ERRORS
  74 The call succeeds unless:
  75 .Bl -tag -width Er
  76 .\" ===========
  77 .It Bq Er EBADF
  78 .Fa Socket
  79 is not a valid descriptor.
  80 .\" ===========
  81 .It Bq Er EINVAL
  82 The
  83 .Fa how
  84 argument is invalid.
  85 .\" ===========
  86 .It Bq Er ENOTCONN
  87 The specified socket is not connected.
  88 .\" ===========
  89 .It Bq Er ENOTSOCK
  90 .Fa Socket
  91 is a file, not a socket.
  92 .El
  93 .Sh SEE ALSO
  94 .Xr connect 2 ,
  95 .Xr connectx 2 ,
  96 .Xr disconnectx 2 ,
  97 .Xr socket 2
  98 .Sh HISTORY
  99 The
 100 .Fn shutdown
 101 function call appeared in
 102 .Bx 4.2 .