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
34int
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
49versioned_symbol (libc, __aio_error, aio_error, GLIBC_2_34);
50versioned_symbol (libc, __aio_error, aio_error64, GLIBC_2_34);
51# if OTHER_SHLIB_COMPAT (librt, GLIBC_2_1, GLIBC_2_34)
52compat_symbol (librt, __aio_error, aio_error, GLIBC_2_1);
53compat_symbol (librt, __aio_error, aio_error64, GLIBC_2_1);
54# endif
55#else /* !PTHREAD_IN_LIBC */
56strong_alias (__aio_error, aio_error)
57weak_alias (__aio_error, aio_error64)
58#endif /* !PTHREAD_IN_LIBC */
59