| 1 | /* Return error status of asynchronous I/O request. |
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| 2 | Copyright (C) 1997-2022 Free Software Foundation, Inc. |
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| 3 | This file is part of the GNU C Library. |
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| 4 | |
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| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2.1 of the License, or (at your option) any later version. |
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| 9 | |
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| 10 | The GNU C Library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with the GNU C Library; if not, see |
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| 17 | <https://www.gnu.org/licenses/>. */ |
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| 18 | |
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| 19 | |
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| 20 | /* We use an UGLY hack to prevent gcc from finding us cheating. The |
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| 21 | implementation of aio_error and aio_error64 are identical and so |
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| 22 | we want to avoid code duplication by using aliases. But gcc sees |
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| 23 | the different parameter lists and prints a warning. We define here |
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| 24 | a function so that aio_error64 has no prototype. */ |
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| 25 | #define aio_error64 XXX |
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| 26 | #include <aio.h> |
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| 27 | /* And undo the hack. */ |
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| 28 | #undef aio_error64 |
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| 29 | |
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| 30 | #include <aio_misc.h> |
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| 31 | #include <pthreadP.h> |
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| 32 | #include <shlib-compat.h> |
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| 33 | |
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| 34 | int |
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| 35 | __aio_error (const struct aiocb *aiocbp) |
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| 36 | { |
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| 37 | int ret; |
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| 38 | |
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| 39 | /* Acquire the mutex to make sure all operations for this request are |
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| 40 | complete. */ |
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| 41 | __pthread_mutex_lock (&__aio_requests_mutex); |
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| 42 | ret = aiocbp->__error_code; |
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| 43 | __pthread_mutex_unlock (&__aio_requests_mutex); |
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| 44 | |
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| 45 | return ret; |
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| 46 | } |
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| 47 | |
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| 48 | #if PTHREAD_IN_LIBC |
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| 49 | versioned_symbol (libc, __aio_error, aio_error, GLIBC_2_34); |
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| 50 | versioned_symbol (libc, __aio_error, aio_error64, GLIBC_2_34); |
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| 51 | # if OTHER_SHLIB_COMPAT (librt, GLIBC_2_1, GLIBC_2_34) |
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| 52 | compat_symbol (librt, __aio_error, aio_error, GLIBC_2_1); |
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| 53 | compat_symbol (librt, __aio_error, aio_error64, GLIBC_2_1); |
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| 54 | # endif |
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| 55 | #else /* !PTHREAD_IN_LIBC */ |
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| 56 | strong_alias (__aio_error, aio_error) |
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| 57 | weak_alias (__aio_error, aio_error64) |
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| 58 | #endif /* !PTHREAD_IN_LIBC */ |
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| 59 | |
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