1  /* Copyright (C) 1991-2023 Free Software Foundation, Inc.
       2     This file is part of the GNU C Library.
       3  
       4     The GNU C Library is free software; you can redistribute it and/or
       5     modify it under the terms of the GNU Lesser General Public
       6     License as published by the Free Software Foundation; either
       7     version 2.1 of the License, or (at your option) any later version.
       8  
       9     The GNU C Library 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 GNU
      12     Lesser General Public License for more details.
      13  
      14     You should have received a copy of the GNU Lesser General Public
      15     License along with the GNU C Library; if not, see
      16     <https://www.gnu.org/licenses/>.  */
      17  
      18  #include <sys/time.h>
      19  #include <sys/types.h>
      20  #include <errno.h>
      21  
      22  /* Check the first NFDS descriptors each in READFDS (if not NULL) for read
      23     readiness, in WRITEFDS (if not NULL) for write readiness, and in EXCEPTFDS
      24     (if not NULL) for exceptional conditions.  If TIMEOUT is not NULL, time out
      25     after waiting the interval specified therein.  Returns the number of ready
      26     descriptors, or -1 for errors.  */
      27  int
      28  __select (int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
      29  	  struct timeval *timeout)
      30  {
      31    __set_errno (ENOSYS);
      32    return -1;
      33  }
      34  libc_hidden_def (__select)
      35  stub_warning (select)
      36  
      37  weak_alias (__select, select)