1/* Substitute for <sys/select.h>.
2   Copyright (C) 2007-2014 Free Software Foundation, Inc.
3
4   This program is free software; you can redistribute it and/or modify
5   it under the terms of the GNU General Public License as published by
6   the Free Software Foundation; either version 3, or (at your option)
7   any later version.
8
9   This program is distributed in the hope that it will be useful,
10   but WITHOUT ANY WARRANTY; without even the implied warranty of
11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12   GNU General Public License for more details.
13
14   You should have received a copy of the GNU General Public License
15   along with this program; if not, see <http://www.gnu.org/licenses/>.  */
16
17# if __GNUC__ >= 3
18@PRAGMA_SYSTEM_HEADER@
19# endif
20@PRAGMA_COLUMNS@
21
22/* On OSF/1 and Solaris 2.6, <sys/types.h> and <sys/time.h>
23   both include <sys/select.h>.
24   On Cygwin, <sys/time.h> includes <sys/select.h>.
25   Simply delegate to the system's header in this case.  */
26#if (@HAVE_SYS_SELECT_H@                                                \
27     && ((defined __osf__ && defined _SYS_TYPES_H_                      \
28          && !defined _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H         \
29          && defined _OSF_SOURCE)                                       \
30         || (defined __sun && defined _SYS_TYPES_H                      \
31             && (! (defined _XOPEN_SOURCE || defined _POSIX_C_SOURCE)   \
32                 || defined __EXTENSIONS__))))
33
34# define _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TYPES_H
35# @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
36
37#elif (@HAVE_SYS_SELECT_H@                                              \
38       && (defined _CYGWIN_SYS_TIME_H                                   \
39           || (defined __osf__ && defined _SYS_TIME_H_                  \
40               && !defined _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H    \
41               && defined _OSF_SOURCE)                                  \
42           || (defined __sun && defined _SYS_TIME_H                     \
43               && (! (defined _XOPEN_SOURCE || defined _POSIX_C_SOURCE) \
44                   || defined __EXTENSIONS__))))
45
46# define _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H
47# @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
48
49/* On IRIX 6.5, <sys/timespec.h> includes <sys/types.h>, which includes
50   <sys/bsd_types.h>, which includes <sys/select.h>.  At this point we cannot
51   include <signal.h>, because that includes <internal/signal_core.h>, which
52   gives a syntax error because <sys/timespec.h> has not been completely
53   processed.  Simply delegate to the system's header in this case.  */
54#elif @HAVE_SYS_SELECT_H@ && defined __sgi && (defined _SYS_BSD_TYPES_H && !defined _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_BSD_TYPES_H)
55
56# define _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_BSD_TYPES_H
57# @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
58
59/* On OpenBSD 5.0, <pthread.h> includes <sys/types.h>, which includes
60   <sys/select.h>.  At this point we cannot include <signal.h>, because that
61   includes gnulib's pthread.h override, which gives a syntax error because
62   /usr/include/pthread.h has not been completely processed.  Simply delegate
63   to the system's header in this case.  */
64#elif @HAVE_SYS_SELECT_H@ && defined __OpenBSD__ && (defined _PTHREAD_H_ && !defined PTHREAD_MUTEX_INITIALIZER)
65
66# @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
67
68#else
69
70#ifndef _@GUARD_PREFIX@_SYS_SELECT_H
71
72/* On many platforms, <sys/select.h> assumes prior inclusion of
73   <sys/types.h>.  Also, mingw defines sigset_t there, instead of
74   in <signal.h> where it belongs.  */
75#include <sys/types.h>
76
77#if @HAVE_SYS_SELECT_H@
78
79/* On OSF/1 4.0, <sys/select.h> provides only a forward declaration
80   of 'struct timeval', and no definition of this type.
81   Also, Mac OS X, AIX, HP-UX, IRIX, Solaris, Interix declare select()
82   in <sys/time.h>.
83   But avoid namespace pollution on glibc systems.  */
84# ifndef __GLIBC__
85#  include <sys/time.h>
86# endif
87
88/* On AIX 7 and Solaris 10, <sys/select.h> provides an FD_ZERO implementation
89   that relies on memset(), but without including <string.h>.
90   But in any case avoid namespace pollution on glibc systems.  */
91# if (defined __OpenBSD__ || defined _AIX || defined __sun || defined __osf__ || defined __BEOS__) \
92     && ! defined __GLIBC__
93#  include <string.h>
94# endif
95
96/* The include_next requires a split double-inclusion guard.  */
97# @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
98
99#endif
100
101/* Get definition of 'sigset_t'.
102   But avoid namespace pollution on glibc systems.
103   Do this after the include_next (for the sake of OpenBSD 5.0) but before
104   the split double-inclusion guard (for the sake of Solaris).  */
105#if !(defined __GLIBC__ && !defined __UCLIBC__)
106# include <signal.h>
107#endif
108
109#ifndef _@GUARD_PREFIX@_SYS_SELECT_H
110#define _@GUARD_PREFIX@_SYS_SELECT_H
111
112#if !@HAVE_SYS_SELECT_H@
113/* A platform that lacks <sys/select.h>.  */
114/* Get the 'struct timeval' and 'fd_set' types and the FD_* macros
115   on most platforms.  */
116# include <sys/time.h>
117/* On HP-UX 11, <sys/time.h> provides an FD_ZERO implementation
118   that relies on memset(), but without including <string.h>.  */
119# if defined __hpux
120#  include <string.h>
121# endif
122/* On native Windows platforms:
123   Get the 'fd_set' type.
124   Get the close() declaration before we override it.  */
125# if @HAVE_WINSOCK2_H@
126#  if !defined _GL_INCLUDING_WINSOCK2_H
127#   define _GL_INCLUDING_WINSOCK2_H
128#   include <winsock2.h>
129#   undef _GL_INCLUDING_WINSOCK2_H
130#  endif
131#  include <io.h>
132# endif
133#endif
134
135/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
136
137/* The definition of _GL_WARN_ON_USE is copied here.  */
138
139
140/* Fix some definitions from <winsock2.h>.  */
141
142#if @HAVE_WINSOCK2_H@
143
144# if !GNULIB_defined_rpl_fd_isset
145
146/* Re-define FD_ISSET to avoid a WSA call while we are not using
147   network sockets.  */
148static int
149rpl_fd_isset (SOCKET fd, fd_set * set)
150{
151  u_int i;
152  if (set == NULL)
153    return 0;
154
155  for (i = 0; i < set->fd_count; i++)
156    if (set->fd_array[i] == fd)
157      return 1;
158
159  return 0;
160}
161
162#  define GNULIB_defined_rpl_fd_isset 1
163# endif
164
165# undef FD_ISSET
166# define FD_ISSET(fd, set) rpl_fd_isset(fd, set)
167
168#endif
169
170/* Hide some function declarations from <winsock2.h>.  */
171
172#if @HAVE_WINSOCK2_H@
173# if !defined _@GUARD_PREFIX@_UNISTD_H
174#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
175#   undef close
176#   define close close_used_without_including_unistd_h
177#  else
178    _GL_WARN_ON_USE (close,
179                     "close() used without including <unistd.h>");
180#  endif
181#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
182#   undef gethostname
183#   define gethostname gethostname_used_without_including_unistd_h
184#  else
185    _GL_WARN_ON_USE (gethostname,
186                     "gethostname() used without including <unistd.h>");
187#  endif
188# endif
189# if !defined _@GUARD_PREFIX@_SYS_SOCKET_H
190#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
191#   undef socket
192#   define socket              socket_used_without_including_sys_socket_h
193#   undef connect
194#   define connect             connect_used_without_including_sys_socket_h
195#   undef accept
196#   define accept              accept_used_without_including_sys_socket_h
197#   undef bind
198#   define bind                bind_used_without_including_sys_socket_h
199#   undef getpeername
200#   define getpeername         getpeername_used_without_including_sys_socket_h
201#   undef getsockname
202#   define getsockname         getsockname_used_without_including_sys_socket_h
203#   undef getsockopt
204#   define getsockopt          getsockopt_used_without_including_sys_socket_h
205#   undef listen
206#   define listen              listen_used_without_including_sys_socket_h
207#   undef recv
208#   define recv                recv_used_without_including_sys_socket_h
209#   undef send
210#   define send                send_used_without_including_sys_socket_h
211#   undef recvfrom
212#   define recvfrom            recvfrom_used_without_including_sys_socket_h
213#   undef sendto
214#   define sendto              sendto_used_without_including_sys_socket_h
215#   undef setsockopt
216#   define setsockopt          setsockopt_used_without_including_sys_socket_h
217#   undef shutdown
218#   define shutdown            shutdown_used_without_including_sys_socket_h
219#  else
220    _GL_WARN_ON_USE (socket,
221                     "socket() used without including <sys/socket.h>");
222    _GL_WARN_ON_USE (connect,
223                     "connect() used without including <sys/socket.h>");
224    _GL_WARN_ON_USE (accept,
225                     "accept() used without including <sys/socket.h>");
226    _GL_WARN_ON_USE (bind,
227                     "bind() used without including <sys/socket.h>");
228    _GL_WARN_ON_USE (getpeername,
229                     "getpeername() used without including <sys/socket.h>");
230    _GL_WARN_ON_USE (getsockname,
231                     "getsockname() used without including <sys/socket.h>");
232    _GL_WARN_ON_USE (getsockopt,
233                     "getsockopt() used without including <sys/socket.h>");
234    _GL_WARN_ON_USE (listen,
235                     "listen() used without including <sys/socket.h>");
236    _GL_WARN_ON_USE (recv,
237                     "recv() used without including <sys/socket.h>");
238    _GL_WARN_ON_USE (send,
239                     "send() used without including <sys/socket.h>");
240    _GL_WARN_ON_USE (recvfrom,
241                     "recvfrom() used without including <sys/socket.h>");
242    _GL_WARN_ON_USE (sendto,
243                     "sendto() used without including <sys/socket.h>");
244    _GL_WARN_ON_USE (setsockopt,
245                     "setsockopt() used without including <sys/socket.h>");
246    _GL_WARN_ON_USE (shutdown,
247                     "shutdown() used without including <sys/socket.h>");
248#  endif
249# endif
250#endif
251
252
253#if @GNULIB_PSELECT@
254# if @REPLACE_PSELECT@
255#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
256#   undef pselect
257#   define pselect rpl_pselect
258#  endif
259_GL_FUNCDECL_RPL (pselect, int,
260                  (int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
261                   struct timespec const *restrict, const sigset_t *restrict));
262_GL_CXXALIAS_RPL (pselect, int,
263                  (int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
264                   struct timespec const *restrict, const sigset_t *restrict));
265# else
266#  if !@HAVE_PSELECT@
267_GL_FUNCDECL_SYS (pselect, int,
268                  (int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
269                   struct timespec const *restrict, const sigset_t *restrict));
270#  endif
271_GL_CXXALIAS_SYS (pselect, int,
272                  (int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
273                   struct timespec const *restrict, const sigset_t *restrict));
274# endif
275_GL_CXXALIASWARN (pselect);
276#elif defined GNULIB_POSIXCHECK
277# undef pselect
278# if HAVE_RAW_DECL_PSELECT
279_GL_WARN_ON_USE (pselect, "pselect is not portable - "
280                 "use gnulib module pselect for portability");
281# endif
282#endif
283
284#if @GNULIB_SELECT@
285# if @REPLACE_SELECT@
286#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
287#   undef select
288#   define select rpl_select
289#  endif
290_GL_FUNCDECL_RPL (select, int,
291                  (int, fd_set *, fd_set *, fd_set *, struct timeval *));
292_GL_CXXALIAS_RPL (select, int,
293                  (int, fd_set *, fd_set *, fd_set *, struct timeval *));
294# else
295_GL_CXXALIAS_SYS (select, int,
296                  (int, fd_set *, fd_set *, fd_set *, struct timeval *));
297# endif
298_GL_CXXALIASWARN (select);
299#elif @HAVE_WINSOCK2_H@
300# undef select
301# define select select_used_without_requesting_gnulib_module_select
302#elif defined GNULIB_POSIXCHECK
303# undef select
304# if HAVE_RAW_DECL_SELECT
305_GL_WARN_ON_USE (select, "select is not always POSIX compliant - "
306                 "use gnulib module select for portability");
307# endif
308#endif
309
310
311#endif /* _@GUARD_PREFIX@_SYS_SELECT_H */
312#endif /* _@GUARD_PREFIX@_SYS_SELECT_H */
313#endif /* OSF/1 */
314