sysdeps/unix/sysv/linux/pselect32.c

   1 /* Synchronous I/O multiplexing.  Linux 32-bit time fallback.
   2    Copyright (C) 2020-2024 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <sys/select.h>
  20 #include <sysdep-cancel.h>
  21
  22 #ifndef __ASSUME_TIME64_SYSCALLS
  23
  24 int
  25 __pselect32 (int nfds, fd_set *readfds, fd_set *writefds,
  26              fd_set *exceptfds, const struct __timespec64 *timeout,
  27              const sigset_t *sigmask)
  28 {
  29   struct timespec ts32, *pts32 = NULL;
  30   if (timeout != NULL)
  31     {
  32       ts32 = valid_timespec64_to_timespec (*timeout);
  33       pts32 = &ts32;
  34     }
  35
  36   return SYSCALL_CANCEL (pselect6, nfds, readfds, writefds, exceptfds,
  37                          pts32,
  38                          ((__syscall_ulong_t[]){ (uintptr_t) sigmask,
  39                                                  __NSIG_BYTES }));
  40 }
  41 #endif