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+/* Copyright (C) 1996, 1997 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 Library General Public License as
+ published by the Free Software Foundation; either version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+/*
+ * ISO/IEC 9945-1:1996 6.7: Asynchronous Input and Output
+ */
+
+#ifndef _AIO_H
+#define _AIO_H 1
+
+#include <features.h>
+#include <fcntl.h>
+#include <signal.h>
+#define __need_timespec
+#include <time.h>
+#include <sys/types.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 *__last_fd;
+ struct aiocb *__next_fd;
+ 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. */
+#else
+ __off64_t aio_offset; /* File offset. */
+#endif
+ int __unused[32];
+};
+
+/* The same for the 64bit offsets. */
+#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 aiocb64 *__last_fd;
+ struct aiocb64 *__next_fd;
+ struct aiocb64 *__next_prio;
+ int __abs_prio;
+ int __policy;
+ int __error_code;
+ __ssize_t __return_value;
+
+ __off64_t aio_offset; /* File offset. */
+ int __unused[32];
+};
+#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
+ __LIO_DSYNC,
+ __LIO_SYNC,
+ __LIO_READ64 = LIO_READ | 128,
+ __LIO_WRITE64 = LIO_WRITE | 128
+};
+
+
+/* Synchronization options for `lio_listio' function. */
+enum
+{
+ LIO_WAIT,
+#define LIO_WAIT LIO_WAIT
+ LIO_NOWAIT
+#define LIO_NOWAIT LIO_NOWAIT
+};
+
+
+/* Enqueue read request for given number of bytes and the given priority. */
+#ifndef __USE_FILE_OFFSET64
+extern int aio_read __P ((struct aiocb *__aiocbp));
+#else
+extern int aio_read __P ((struct aiocb *__aiocbp)) __asm__ ("aio_read64");
+#endif
+#ifdef __USE_LARGEFILE64
+extern int aio_read64 __P ((struct aiocb64 *__aiocbp));
+#endif
+
+/* Enqueue write request for given number of bytes and the given priority. */
+#ifndef __USE_FILE_OFFSET64
+extern int aio_write __P ((struct aiocb *__aiocbp));
+#else
+extern int aio_write __P ((struct aiocb *__aiocbp)) __asm__ ("aio_write64");
+#endif
+#ifdef __USE_LARGEFILE64
+extern int aio_write64 __P ((struct aiocb64 *__aiocbp));
+#endif
+
+
+/* Initiate list of I/O requests. */
+#ifndef __USE_FILE_OFFSET64
+extern int lio_listio __P ((int __mode, struct aiocb *__const __list[],
+ int __nent, struct sigevent *__sig));
+#else
+extern int lio_listio __P ((int __mode, struct aiocb *__const __list[],
+ int __nent, struct sigevent *__sig))
+ __asm__ ("lio_listio64");
+#endif
+#ifdef __USE_LARGEFILE64
+extern int lio_listio64 __P ((int __mode, struct aiocb64 *__const __list[],
+ int __nent, struct sigevent *__sig));
+#endif
+
+
+/* Retrieve error status associated with AIOCBP. */
+#ifndef __USE_FILE_OFFSET64
+extern int aio_error __P ((__const struct aiocb *__aiocbp));
+#else
+extern int aio_error __P ((__const struct aiocb *__aiocbp))
+ __asm__ ("aio_error64");;
+#endif
+#ifdef __USE_LARGEFILE64
+extern int aio_error64 __P ((__const struct aiocb64 *__aiocbp));
+#endif
+
+
+/* Return status associated with AIOCBP. */
+#ifndef __USE_FILE_OFFSET64
+extern __ssize_t aio_return __P ((struct aiocb *__aiocbp));
+#else
+extern __ssize_t aio_return __P ((struct aiocb *__aiocbp))
+ __asm__ ("aio_return64");
+#endif
+#ifdef __USE_LARGEFILE64
+extern __ssize_t aio_return64 __P ((struct aiocb64 *__aiocbp));
+#endif
+
+
+/* Try to cancel asynchronous I/O requests outstanding against file
+ descriptot FILDES. */
+#ifndef __USE_FILE_OFFSET64
+extern int aio_cancel __P ((int __fildes, struct aiocb *__aiocbp));
+#else
+extern int aio_cancel __P ((int __fildes, struct aiocb *__aiocbp))
+ __asm__ ("aio_cancel64");
+#endif
+#ifdef __USE_LARGEFILE64
+extern int aio_cancel64 __P ((int __fildes, struct aiocb64 *__aiocbp));
+#endif
+
+
+/* Suspend calling thread until at least one of the asynchronous I/O
+ operations referenced by LIST has completed. */
+#ifndef __USE_FILE_OFFSET64
+extern int aio_suspend __P ((__const struct aiocb *__const __list[],
+ int __nent, __const struct timespec *__timeout));
+#else
+extern int aio_suspend __P ((__const struct aiocb *__const __list[],
+ int __nent, __const struct timespec *__timeout))
+ __asm__ ("aio_suspend64");
+#endif
+#ifdef __USE_LARGEFILE64
+extern int aio_suspend64 __P ((__const struct aiocb64 *__const __list[],
+ int __nent,
+ __const struct timespec *__timeout));
+#endif
+
+
+/* Force all operations associated with file desriptor described by
+ `aio_fildes' member of AIOCBP. */
+#ifndef __USE_FILE_OFFSET64
+extern int aio_fsync __P ((int __op, struct aiocb *__aiocbp));
+#else
+extern int aio_fsync __P ((int __op, struct aiocb *__aiocbp))
+ __asm__ ("aio_fsync64");
+#endif
+#ifdef __USE_LARGEFILE64
+extern int aio_fsync64 __P ((int __op, struct aiocb64 *__aiocbp));
+#endif
+
+
+__END_DECLS
+
+#endif /* aio.h */