alpine/talk.h

   1 /*
   2  * $Id: talk.h 761 2007-10-23 22:35:18Z hubert@u.washington.edu $
   3  *
   4  * ========================================================================
   5  * Copyright 2013-2020 Eduardo Chappa
   6  * Copyright 2006 University of Washington
   7  *
   8  * Licensed under the Apache License, Version 2.0 (the "License");
   9  * you may not use this file except in compliance with the License.
  10  * You may obtain a copy of the License at
  11  *
  12  *     http://www.apache.org/licenses/LICENSE-2.0
  13  *
  14  * ========================================================================
  15  */
  16
  17 #ifndef PITH_TALK_INCLUDED
  18 #define PITH_TALK_INCLUDED
  19
  20
  21 /*
  22  * Macros to aid hack to turn off talk permission.
  23  * Bit 020 is usually used to turn off talk permission, we turn off
  24  * 002 also for good measure, since some mesg commands seem to do that.
  25  */
  26 #define TALK_BIT                020             /* mode bits */
  27 #define GM_BIT                  002
  28 #define TMD_CLEAR               0               /* functions */
  29 #define TMD_SET                 1
  30 #define TMD_RESET               2
  31 #define allow_talk(p)           tty_chmod((p), TALK_BIT, TMD_SET)
  32 #define disallow_talk(p)        tty_chmod((p), TALK_BIT|GM_BIT, TMD_CLEAR)
  33
  34
  35 /* exported prototypes */
  36
  37
  38 #endif /* PITH_TALK_INCLUDED */