rt/aio_write.c

   1 /* Asynchronous write.
   2    Copyright (C) 1997-2021 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <https://www.gnu.org/licenses/>.  */
  19
  20 #include <bits/wordsize.h>
  21 #if __WORDSIZE == 64
  22 # define aio_write64 XXX
  23 # include <aio.h>
  24 /* And undo the hack.  */
  25 # undef aio_write64
  26 #else
  27 # include <aio.h>
  28 #endif
  29
  30 #include <aio_misc.h>
  31 #include <shlib-compat.h>
  32
  33 int
  34 __aio_write (struct aiocb *aiocbp)
  35 {
  36   return (__aio_enqueue_request ((aiocb_union *) aiocbp, LIO_WRITE) == NULL
  37           ? -1 : 0);
  38 }
  39
  40 #if PTHREAD_IN_LIBC
  41 versioned_symbol (libc, __aio_write, aio_write, GLIBC_2_34);
  42 # if __WORDSIZE == 64
  43 versioned_symbol (libc, __aio_write, aio_write64, GLIBC_2_34);
  44 # endif
  45 # if OTHER_SHLIB_COMPAT (librt, GLIBC_2_1, GLIBC_2_34)
  46 compat_symbol (librt, __aio_write, aio_write, GLIBC_2_1);
  47 #  if __WORDSIZE == 64
  48 compat_symbol (librt, __aio_write, aio_write64, GLIBC_2_1);
  49 #  endif
  50 # endif
  51 #else /* !PTHREAD_IN_LIBC */
  52 strong_alias (__aio_write, aio_write)
  53 # if __WORDSIZE == 64
  54 weak_alias (__aio_write, aio_write64)
  55 #endif
  56 #endif  /* !PTHREAD_IN_LIBC */