lib/replace/system/select.h

   1 #ifndef _system_select_h
   2 #define _system_select_h
   3 /*
   4    Unix SMB/CIFS implementation.
   5
   6    select system include wrappers
   7
   8    Copyright (C) Andrew Tridgell 2004
   9
  10      ** NOTE! The following LGPL license applies to the replace
  11      ** library. This does NOT imply that all of Samba is released
  12      ** under the LGPL
  13
  14    This library is free software; you can redistribute it and/or
  15    modify it under the terms of the GNU Lesser General Public
  16    License as published by the Free Software Foundation; either
  17    version 3 of the License, or (at your option) any later version.
  18
  19    This library is distributed in the hope that it will be useful,
  20    but WITHOUT ANY WARRANTY; without even the implied warranty of
  21    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  22    Lesser General Public License for more details.
  23
  24    You should have received a copy of the GNU Lesser General Public
  25    License along with this library; if not, see <http://www.gnu.org/licenses/>.
  26
  27 */
  28
  29 #ifdef HAVE_SYS_SELECT_H
  30 #include <sys/select.h>
  31 #endif
  32
  33 #ifdef HAVE_SYS_EPOLL_H
  34 #include <sys/epoll.h>
  35 #endif
  36
  37 #ifndef SELECT_CAST
  38 #define SELECT_CAST
  39 #endif
  40
  41 #ifdef HAVE_POLL
  42
  43 #include <poll.h>
  44
  45 #else
  46
  47 /* Type used for the number of file descriptors.  */
  48 typedef unsigned long int nfds_t;
  49
  50 /* Data structure describing a polling request.  */
  51 struct pollfd
  52 {
  53         int fd;            /* File descriptor to poll.  */
  54         short int events;  /* Types of events poller cares about.  */
  55         short int revents; /* Types of events that actually occurred.  */
  56 };
  57
  58 /* Event types that can be polled for.  These bits may be set in `events'
  59    to indicate the interesting event types; they will appear in `revents'
  60    to indicate the status of the file descriptor.  */
  61 #define POLLIN          0x001           /* There is data to read.  */
  62 #define POLLPRI         0x002           /* There is urgent data to read.  */
  63 #define POLLOUT         0x004           /* Writing now will not block.  */
  64 #define POLLRDNORM      0x040           /* Normal data may be read.  */
  65 #define POLLRDBAND      0x080           /* Priority data may be read.  */
  66 #define POLLWRNORM      0x100           /* Writing now will not block.  */
  67 #define POLLWRBAND      0x200           /* Priority data may be written.  */
  68 #define POLLERR         0x008           /* Error condition.  */
  69 #define POLLHUP         0x010           /* Hung up.  */
  70 #define POLLNVAL        0x020           /* Invalid polling request.  */
  71
  72 /* define is in "replace.h" */
  73 int rep_poll(struct pollfd *fds, nfds_t nfds, int timeout);
  74
  75 #endif
  76
  77 #endif