lib/sys_select.in.h

   1 /* Substitute for <sys/select.h>.
   2    Copyright (C) 2007-2017 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 _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TYPES_H             \
  28      && ((defined __osf__ && defined _SYS_TYPES_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 _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H       \
  40                && ((defined __osf__ && defined _SYS_TIME_H_             \
  41                     && defined _OSF_SOURCE)                             \
  42                    || (defined __sun && defined _SYS_TIME_H             \
  43                        && (! (defined _XOPEN_SOURCE                     \
  44                               || defined _POSIX_C_SOURCE)               \
  45                            || defined __EXTENSIONS__))))))
  46
  47 # define _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H
  48 # @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
  49
  50 /* On IRIX 6.5, <sys/timespec.h> includes <sys/types.h>, which includes
  51    <sys/bsd_types.h>, which includes <sys/select.h>.  At this point we cannot
  52    include <signal.h>, because that includes <internal/signal_core.h>, which
  53    gives a syntax error because <sys/timespec.h> has not been completely
  54    processed.  Simply delegate to the system's header in this case.  */
  55 #elif @HAVE_SYS_SELECT_H@ && defined __sgi && (defined _SYS_BSD_TYPES_H && !defined _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_BSD_TYPES_H)
  56
  57 # define _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_BSD_TYPES_H
  58 # @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
  59
  60 /* On OpenBSD 5.0, <pthread.h> includes <sys/types.h>, which includes
  61    <sys/select.h>.  At this point we cannot include <signal.h>, because that
  62    includes gnulib's pthread.h override, which gives a syntax error because
  63    /usr/include/pthread.h has not been completely processed.  Simply delegate
  64    to the system's header in this case.  */
  65 #elif @HAVE_SYS_SELECT_H@ && defined __OpenBSD__ && (defined _PTHREAD_H_ && !defined PTHREAD_MUTEX_INITIALIZER)
  66
  67 # @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
  68
  69 #else
  70
  71 #ifndef _@GUARD_PREFIX@_SYS_SELECT_H
  72
  73 /* On many platforms, <sys/select.h> assumes prior inclusion of
  74    <sys/types.h>.  Also, mingw defines sigset_t there, instead of
  75    in <signal.h> where it belongs.  */
  76 #include <sys/types.h>
  77
  78 #if @HAVE_SYS_SELECT_H@
  79
  80 /* On OSF/1 4.0, <sys/select.h> provides only a forward declaration
  81    of 'struct timeval', and no definition of this type.
  82    Also, Mac OS X, AIX, HP-UX, IRIX, Solaris, Interix declare select()
  83    in <sys/time.h>.
  84    But avoid namespace pollution on glibc systems and "unknown type
  85    name" problems on Cygwin.  */
  86 # if !(defined __GLIBC__ || defined __CYGWIN__)
  87 #  include <sys/time.h>
  88 # endif
  89
  90 /* On AIX 7 and Solaris 10, <sys/select.h> provides an FD_ZERO implementation
  91    that relies on memset(), but without including <string.h>.
  92    But in any case avoid namespace pollution on glibc systems.  */
  93 # if (defined __OpenBSD__ || defined _AIX || defined __sun || defined __osf__ || defined __BEOS__) \
  94      && ! defined __GLIBC__
  95 #  include <string.h>
  96 # endif
  97
  98 /* The include_next requires a split double-inclusion guard.  */
  99 # @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
 100
 101 #endif
 102
 103 /* Get definition of 'sigset_t'.
 104    But avoid namespace pollution on glibc systems and "unknown type
 105    name" problems on Cygwin.
 106    Do this after the include_next (for the sake of OpenBSD 5.0) but before
 107    the split double-inclusion guard (for the sake of Solaris).  */
 108 #if !((defined __GLIBC__ || defined __CYGWIN__) && !defined __UCLIBC__)
 109 # include <signal.h>
 110 #endif
 111
 112 #ifndef _@GUARD_PREFIX@_SYS_SELECT_H
 113 #define _@GUARD_PREFIX@_SYS_SELECT_H
 114
 115 #if !@HAVE_SYS_SELECT_H@
 116 /* A platform that lacks <sys/select.h>.  */
 117 /* Get the 'struct timeval' and 'fd_set' types and the FD_* macros
 118    on most platforms.  */
 119 # include <sys/time.h>
 120 /* On HP-UX 11, <sys/time.h> provides an FD_ZERO implementation
 121    that relies on memset(), but without including <string.h>.  */
 122 # if defined __hpux
 123 #  include <string.h>
 124 # endif
 125 /* On native Windows platforms:
 126    Get the 'fd_set' type.
 127    Get the close() declaration before we override it.  */
 128 # if @HAVE_WINSOCK2_H@
 129 #  if !defined _GL_INCLUDING_WINSOCK2_H
 130 #   define _GL_INCLUDING_WINSOCK2_H
 131 #   include <winsock2.h>
 132 #   undef _GL_INCLUDING_WINSOCK2_H
 133 #  endif
 134 #  include <io.h>
 135 # endif
 136 #endif
 137
 138 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
 139
 140 /* The definition of _GL_WARN_ON_USE is copied here.  */
 141
 142
 143 /* Fix some definitions from <winsock2.h>.  */
 144
 145 #if @HAVE_WINSOCK2_H@
 146
 147 # if !GNULIB_defined_rpl_fd_isset
 148
 149 /* Re-define FD_ISSET to avoid a WSA call while we are not using
 150    network sockets.  */
 151 static int
 152 rpl_fd_isset (SOCKET fd, fd_set * set)
 153 {
 154   u_int i;
 155   if (set == NULL)
 156     return 0;
 157
 158   for (i = 0; i < set->fd_count; i++)
 159     if (set->fd_array[i] == fd)
 160       return 1;
 161
 162   return 0;
 163 }
 164
 165 #  define GNULIB_defined_rpl_fd_isset 1
 166 # endif
 167
 168 # undef FD_ISSET
 169 # define FD_ISSET(fd, set) rpl_fd_isset(fd, set)
 170
 171 #endif
 172
 173 /* Hide some function declarations from <winsock2.h>.  */
 174
 175 #if @HAVE_WINSOCK2_H@
 176 # if !defined _@GUARD_PREFIX@_UNISTD_H
 177 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 178 #   undef close
 179 #   define close close_used_without_including_unistd_h
 180 #  else
 181     _GL_WARN_ON_USE (close,
 182                      "close() used without including <unistd.h>");
 183 #  endif
 184 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 185 #   undef gethostname
 186 #   define gethostname gethostname_used_without_including_unistd_h
 187 #  else
 188     _GL_WARN_ON_USE (gethostname,
 189                      "gethostname() used without including <unistd.h>");
 190 #  endif
 191 # endif
 192 # if !defined _@GUARD_PREFIX@_SYS_SOCKET_H
 193 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 194 #   undef socket
 195 #   define socket              socket_used_without_including_sys_socket_h
 196 #   undef connect
 197 #   define connect             connect_used_without_including_sys_socket_h
 198 #   undef accept
 199 #   define accept              accept_used_without_including_sys_socket_h
 200 #   undef bind
 201 #   define bind                bind_used_without_including_sys_socket_h
 202 #   undef getpeername
 203 #   define getpeername         getpeername_used_without_including_sys_socket_h
 204 #   undef getsockname
 205 #   define getsockname         getsockname_used_without_including_sys_socket_h
 206 #   undef getsockopt
 207 #   define getsockopt          getsockopt_used_without_including_sys_socket_h
 208 #   undef listen
 209 #   define listen              listen_used_without_including_sys_socket_h
 210 #   undef recv
 211 #   define recv                recv_used_without_including_sys_socket_h
 212 #   undef send
 213 #   define send                send_used_without_including_sys_socket_h
 214 #   undef recvfrom
 215 #   define recvfrom            recvfrom_used_without_including_sys_socket_h
 216 #   undef sendto
 217 #   define sendto              sendto_used_without_including_sys_socket_h
 218 #   undef setsockopt
 219 #   define setsockopt          setsockopt_used_without_including_sys_socket_h
 220 #   undef shutdown
 221 #   define shutdown            shutdown_used_without_including_sys_socket_h
 222 #  else
 223     _GL_WARN_ON_USE (socket,
 224                      "socket() used without including <sys/socket.h>");
 225     _GL_WARN_ON_USE (connect,
 226                      "connect() used without including <sys/socket.h>");
 227     _GL_WARN_ON_USE (accept,
 228                      "accept() used without including <sys/socket.h>");
 229     _GL_WARN_ON_USE (bind,
 230                      "bind() used without including <sys/socket.h>");
 231     _GL_WARN_ON_USE (getpeername,
 232                      "getpeername() used without including <sys/socket.h>");
 233     _GL_WARN_ON_USE (getsockname,
 234                      "getsockname() used without including <sys/socket.h>");
 235     _GL_WARN_ON_USE (getsockopt,
 236                      "getsockopt() used without including <sys/socket.h>");
 237     _GL_WARN_ON_USE (listen,
 238                      "listen() used without including <sys/socket.h>");
 239     _GL_WARN_ON_USE (recv,
 240                      "recv() used without including <sys/socket.h>");
 241     _GL_WARN_ON_USE (send,
 242                      "send() used without including <sys/socket.h>");
 243     _GL_WARN_ON_USE (recvfrom,
 244                      "recvfrom() used without including <sys/socket.h>");
 245     _GL_WARN_ON_USE (sendto,
 246                      "sendto() used without including <sys/socket.h>");
 247     _GL_WARN_ON_USE (setsockopt,
 248                      "setsockopt() used without including <sys/socket.h>");
 249     _GL_WARN_ON_USE (shutdown,
 250                      "shutdown() used without including <sys/socket.h>");
 251 #  endif
 252 # endif
 253 #endif
 254
 255
 256 #if @GNULIB_PSELECT@
 257 # if @REPLACE_PSELECT@
 258 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 259 #   undef pselect
 260 #   define pselect rpl_pselect
 261 #  endif
 262 _GL_FUNCDECL_RPL (pselect, int,
 263                   (int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
 264                    struct timespec const *restrict, const sigset_t *restrict));
 265 _GL_CXXALIAS_RPL (pselect, int,
 266                   (int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
 267                    struct timespec const *restrict, const sigset_t *restrict));
 268 # else
 269 #  if !@HAVE_PSELECT@
 270 _GL_FUNCDECL_SYS (pselect, int,
 271                   (int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
 272                    struct timespec const *restrict, const sigset_t *restrict));
 273 #  endif
 274 _GL_CXXALIAS_SYS (pselect, int,
 275                   (int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
 276                    struct timespec const *restrict, const sigset_t *restrict));
 277 # endif
 278 _GL_CXXALIASWARN (pselect);
 279 #elif defined GNULIB_POSIXCHECK
 280 # undef pselect
 281 # if HAVE_RAW_DECL_PSELECT
 282 _GL_WARN_ON_USE (pselect, "pselect is not portable - "
 283                  "use gnulib module pselect for portability");
 284 # endif
 285 #endif
 286
 287 #if @GNULIB_SELECT@
 288 # if @REPLACE_SELECT@
 289 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 290 #   undef select
 291 #   define select rpl_select
 292 #  endif
 293 _GL_FUNCDECL_RPL (select, int,
 294                   (int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
 295                    struct timeval *restrict));
 296 _GL_CXXALIAS_RPL (select, int,
 297                   (int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
 298                    struct timeval *restrict));
 299 # else
 300 _GL_CXXALIAS_SYS (select, int,
 301                   (int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
 302                    struct timeval *restrict));
 303 # endif
 304 _GL_CXXALIASWARN (select);
 305 #elif @HAVE_WINSOCK2_H@
 306 # undef select
 307 # define select select_used_without_requesting_gnulib_module_select
 308 #elif defined GNULIB_POSIXCHECK
 309 # undef select
 310 # if HAVE_RAW_DECL_SELECT
 311 _GL_WARN_ON_USE (select, "select is not always POSIX compliant - "
 312                  "use gnulib module select for portability");
 313 # endif
 314 #endif
 315
 316
 317 #endif /* _@GUARD_PREFIX@_SYS_SELECT_H */
 318 #endif /* _@GUARD_PREFIX@_SYS_SELECT_H */
 319 #endif /* OSF/1 */