libc/sysdeps/linux/sparc64/bits/poll.h

   1 /* Copyright (C) 1997, 2001, 2006 Free Software Foundation, Inc.
   2
   3    The GNU C Library is free software; you can redistribute it and/or
   4    modify it under the terms of the GNU Lesser General Public
   5    License as published by the Free Software Foundation; either
   6    version 2.1 of the License, or (at your option) any later version.
   7
   8    The GNU C Library is distributed in the hope that it will be useful,
   9    but WITHOUT ANY WARRANTY; without even the implied warranty of
  10    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11    Lesser General Public License for more details.
  12
  13    You should have received a copy of the GNU Lesser General Public
  14    License along with the GNU C Library; if not, see
  15    <http://www.gnu.org/licenses/>.  */
  16
  17 #ifndef _SYS_POLL_H
  18 # error "Never use <bits/poll.h> directly; include <sys/poll.h> instead."
  19 #endif
  20
  21 /* Event types that can be polled for.  These bits may be set in `events'
  22    to indicate the interesting event types; they will appear in `revents'
  23    to indicate the status of the file descriptor.  */
  24 #define POLLIN          0x001           /* There is data to read.  */
  25 #define POLLPRI         0x002           /* There is urgent data to read.  */
  26 #define POLLOUT         0x004           /* Writing now will not block.  */
  27
  28 #ifdef __USE_XOPEN
  29 /* These values are defined in XPG4.2.  */
  30 # define POLLRDNORM     0x040           /* Normal data may be read.  */
  31 # define POLLRDBAND     0x080           /* Priority data may be read.  */
  32 # define POLLWRNORM     POLLOUT         /* Writing now will not block.  */
  33 # define POLLWRBAND     0x100           /* Priority data may be written.  */
  34 #endif
  35
  36 #ifdef __USE_GNU
  37 /* These are extensions for Linux.  */
  38 # define POLLMSG        0x200
  39 # define POLLREMOVE     0x400
  40 # define POLLRDHUP      0x800
  41 #endif
  42
  43 /* Event types always implicitly polled for.  These bits need not be set in
  44    `events', but they will appear in `revents' to indicate the status of
  45    the file descriptor.  */
  46 #define POLLERR         0x008           /* Error condition.  */
  47 #define POLLHUP         0x010           /* Hung up.  */
  48 #define POLLNVAL        0x020           /* Invalid polling request.  */