1  /* Return error status of asynchronous I/O request.
       2     Copyright (C) 1997-2023 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  
      20  /* We use an UGLY hack to prevent gcc from finding us cheating.  The
      21     implementation of aio_error and aio_error64 are identical and so
      22     we want to avoid code duplication by using aliases.  But gcc sees
      23     the different parameter lists and prints a warning.  We define here
      24     a function so that aio_error64 has no prototype.  */
      25  #define aio_error64 XXX
      26  #include <aio.h>
      27  /* And undo the hack.  */
      28  #undef aio_error64
      29  
      30  #include <aio_misc.h>
      31  #include <pthreadP.h>
      32  #include <shlib-compat.h>
      33  
      34  int
      35  __aio_error (const struct aiocb *aiocbp)
      36  {
      37    int ret;
      38  
      39    /* Acquire the mutex to make sure all operations for this request are
      40       complete.  */
      41    __pthread_mutex_lock (&__aio_requests_mutex);
      42    ret = aiocbp->__error_code;
      43    __pthread_mutex_unlock (&__aio_requests_mutex);
      44  
      45    return ret;
      46  }
      47  
      48  #if PTHREAD_IN_LIBC
      49  versioned_symbol (libc, __aio_error, aio_error, GLIBC_2_34);
      50  versioned_symbol (libc, __aio_error, aio_error64, GLIBC_2_34);
      51  # if OTHER_SHLIB_COMPAT (librt, GLIBC_2_1, GLIBC_2_34)
      52  compat_symbol (librt, __aio_error, aio_error, GLIBC_2_1);
      53  compat_symbol (librt, __aio_error, aio_error64, GLIBC_2_1);
      54  # endif
      55  #else /* !PTHREAD_IN_LIBC */
      56  strong_alias (__aio_error, aio_error)
      57  weak_alias (__aio_error, aio_error64)
      58  #endif /* !PTHREAD_IN_LIBC */