--- /dev/null
+/* Copyright (C) 1996-2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+/*
+ * ISO/IEC 9945-1:1996 6.7: Asynchronous Input and Output
+ */
+
+#ifndef _AIO_H
+#define _AIO_H 1
+
+#include <features.h>
+#include <sys/types.h>
+#include <bits/types/sigevent_t.h>
+#include <bits/sigevent-consts.h>
+#include <bits/types/struct_timespec.h>
+
+__BEGIN_DECLS
+
+/* Asynchronous I/O control block. */
+struct aiocb
+{
+ int aio_fildes; /* File desriptor. */
+ int aio_lio_opcode; /* Operation to be performed. */
+ int aio_reqprio; /* Request priority offset. */
+ volatile void *aio_buf; /* Location of buffer. */
+ size_t aio_nbytes; /* Length of transfer. */
+ struct sigevent aio_sigevent; /* Signal number and value. */
+
+ /* Internal members. */
+ struct aiocb *__next_prio;
+ int __abs_prio;
+ int __policy;
+ int __error_code;
+ __ssize_t __return_value;
+
+#ifndef __USE_FILE_OFFSET64
+ __off_t aio_offset; /* File offset. */
+ char __pad[sizeof (__off64_t) - sizeof (__off_t)];
+#else
+ __off64_t aio_offset; /* File offset. */
+#endif
+ char __glibc_reserved[32];
+};
+
+/* The same for the 64bit offsets. Please note that the members aio_fildes
+ to __return_value have to be the same in aiocb and aiocb64. */
+#ifdef __USE_LARGEFILE64
+struct aiocb64
+{
+ int aio_fildes; /* File desriptor. */
+ int aio_lio_opcode; /* Operation to be performed. */
+ int aio_reqprio; /* Request priority offset. */
+ volatile void *aio_buf; /* Location of buffer. */
+ size_t aio_nbytes; /* Length of transfer. */
+ struct sigevent aio_sigevent; /* Signal number and value. */
+
+ /* Internal members. */
+ struct aiocb *__next_prio;
+ int __abs_prio;
+ int __policy;
+ int __error_code;
+ __ssize_t __return_value;
+
+ __off64_t aio_offset; /* File offset. */
+ char __glibc_reserved[32];
+};
+#endif
+
+
+#ifdef __USE_GNU
+/* To customize the implementation one can use the following struct.
+ This implementation follows the one in Irix. */
+struct aioinit
+ {
+ int aio_threads; /* Maximal number of threads. */
+ int aio_num; /* Number of expected simultanious requests. */
+ int aio_locks; /* Not used. */
+ int aio_usedba; /* Not used. */
+ int aio_debug; /* Not used. */
+ int aio_numusers; /* Not used. */
+ int aio_idle_time; /* Number of seconds before idle thread
+ terminates. */
+ int aio_reserved;
+ };
+#endif
+
+
+/* Return values of cancelation function. */
+enum
+{
+ AIO_CANCELED,
+#define AIO_CANCELED AIO_CANCELED
+ AIO_NOTCANCELED,
+#define AIO_NOTCANCELED AIO_NOTCANCELED
+ AIO_ALLDONE
+#define AIO_ALLDONE AIO_ALLDONE
+};
+
+
+/* Operation codes for `aio_lio_opcode'. */
+enum
+{
+ LIO_READ,
+#define LIO_READ LIO_READ
+ LIO_WRITE,
+#define LIO_WRITE LIO_WRITE
+ LIO_NOP
+#define LIO_NOP LIO_NOP
+};
+
+
+/* Synchronization options for `lio_listio' function. */
+enum
+{
+ LIO_WAIT,
+#define LIO_WAIT LIO_WAIT
+ LIO_NOWAIT
+#define LIO_NOWAIT LIO_NOWAIT
+};
+
+
+/* Allow user to specify optimization. */
+#ifdef __USE_GNU
+extern void aio_init (const struct aioinit *__init) __THROW __nonnull ((1));
+#endif
+
+
+#ifndef __USE_FILE_OFFSET64
+/* Enqueue read request for given number of bytes and the given priority. */
+extern int aio_read (struct aiocb *__aiocbp) __THROW __nonnull ((1));
+/* Enqueue write request for given number of bytes and the given priority. */
+extern int aio_write (struct aiocb *__aiocbp) __THROW __nonnull ((1));
+
+/* Initiate list of I/O requests. */
+extern int lio_listio (int __mode,
+ struct aiocb *const __list[__restrict_arr],
+ int __nent, struct sigevent *__restrict __sig)
+ __THROW __nonnull ((2));
+
+/* Retrieve error status associated with AIOCBP. */
+extern int aio_error (const struct aiocb *__aiocbp) __THROW __nonnull ((1));
+/* Return status associated with AIOCBP. */
+extern __ssize_t aio_return (struct aiocb *__aiocbp) __THROW __nonnull ((1));
+
+/* Try to cancel asynchronous I/O requests outstanding against file
+ descriptor FILDES. */
+extern int aio_cancel (int __fildes, struct aiocb *__aiocbp) __THROW;
+
+/* Suspend calling thread until at least one of the asynchronous I/O
+ operations referenced by LIST has completed.
+
+ This function is a cancellation point and therefore not marked with
+ __THROW. */
+extern int aio_suspend (const struct aiocb *const __list[], int __nent,
+ const struct timespec *__restrict __timeout)
+ __nonnull ((1));
+
+/* Force all operations associated with file desriptor described by
+ `aio_fildes' member of AIOCBP. */
+extern int aio_fsync (int __operation, struct aiocb *__aiocbp)
+ __THROW __nonnull ((2));
+#else
+# ifdef __REDIRECT_NTH
+extern int __REDIRECT_NTH (aio_read, (struct aiocb *__aiocbp), aio_read64)
+ __nonnull ((1));
+extern int __REDIRECT_NTH (aio_write, (struct aiocb *__aiocbp), aio_write64)
+ __nonnull ((1));
+
+extern int __REDIRECT_NTH (lio_listio,
+ (int __mode,
+ struct aiocb *const __list[__restrict_arr],
+ int __nent, struct sigevent *__restrict __sig),
+ lio_listio64) __nonnull ((2));
+
+extern int __REDIRECT_NTH (aio_error, (const struct aiocb *__aiocbp),
+ aio_error64) __nonnull ((1));
+extern __ssize_t __REDIRECT_NTH (aio_return, (struct aiocb *__aiocbp),
+ aio_return64) __nonnull ((1));
+
+extern int __REDIRECT_NTH (aio_cancel,
+ (int __fildes, struct aiocb *__aiocbp),
+ aio_cancel64);
+
+extern int __REDIRECT_NTH (aio_suspend,
+ (const struct aiocb *const __list[], int __nent,
+ const struct timespec *__restrict __timeout),
+ aio_suspend64) __nonnull ((1));
+
+extern int __REDIRECT_NTH (aio_fsync,
+ (int __operation, struct aiocb *__aiocbp),
+ aio_fsync64) __nonnull ((2));
+
+# else
+# define aio_read aio_read64
+# define aio_write aio_write64
+# define lio_listio lio_listio64
+# define aio_error aio_error64
+# define aio_return aio_return64
+# define aio_cancel aio_cancel64
+# define aio_suspend aio_suspend64
+# define aio_fsync aio_fsync64
+# endif
+#endif
+
+#ifdef __USE_LARGEFILE64
+extern int aio_read64 (struct aiocb64 *__aiocbp) __THROW __nonnull ((1));
+extern int aio_write64 (struct aiocb64 *__aiocbp) __THROW __nonnull ((1));
+
+extern int lio_listio64 (int __mode,
+ struct aiocb64 *const __list[__restrict_arr],
+ int __nent, struct sigevent *__restrict __sig)
+ __THROW __nonnull ((2));
+
+extern int aio_error64 (const struct aiocb64 *__aiocbp)
+ __THROW __nonnull ((1));
+extern __ssize_t aio_return64 (struct aiocb64 *__aiocbp)
+ __THROW __nonnull ((1));
+
+extern int aio_cancel64 (int __fildes, struct aiocb64 *__aiocbp) __THROW;
+
+extern int aio_suspend64 (const struct aiocb64 *const __list[], int __nent,
+ const struct timespec *__restrict __timeout)
+ __THROW __nonnull ((1));
+
+extern int aio_fsync64 (int __operation, struct aiocb64 *__aiocbp)
+ __THROW __nonnull ((2));
+#endif
+
+__END_DECLS
+
+#endif /* aio.h */
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