[PATCH 1/1] Adding aio.h to newlib/libc/include from RTEMS

[Eshan dhawan]

Signed-off-by: Eshan dhawan <eshandhawan51 at gmail.com>
---
 newlib/libc/include/aio.h | 193 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 193 insertions(+)
 create mode 100644 newlib/libc/include/aio.h

diff --git a/newlib/libc/include/aio.h b/newlib/libc/include/aio.h
new file mode 100644
index 000000000..95ed0fdb6
--- /dev/null
+++ b/newlib/libc/include/aio.h
@@ -0,0 +1,193 @@
+/**
+ * @file
+ *
+ * @brief POSIX Asynchronous Input and Output
+ *
+ * This file contains the definitions related to POSIX Asynchronous
+ * Input and Output,
+ */
+
+/*
+ *  COPYRIGHT (c) 1989-2011.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.org/license/LICENSE.
+ */
+
+#ifndef _AIO_H
+#define _AIO_H
+
+#include <sys/cdefs.h>
+#include <unistd.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @defgroup POSIX_AIO POSIX Asynchronous I/O Support
+ *
+ * @ingroup POSIXAPI
+ *
+ * @brief POSIX Asynchronous Input and Output
+ * 
+ */
+/**@{**/
+
+#if defined(_POSIX_ASYNCHRONOUS_IO)
+
+/*
+ *  6.7.1 Data Definitions for Asynchronous Input and Output,
+ *        P1003.1b-1993, p. 151
+ */
+
+#include <sys/types.h>
+#include <signal.h>
+#include <time.h>
+#include <fcntl.h>
+
+/*
+ *  6.7.1.2 Manifest Constants, P1003.1b-1993, p. 153
+ */
+
+#define AIO_CANCELED    0 /* all requested operations have been canceled */
+#define AIO_NOTCANCELED 1 /* some of the operations could not be canceled */
+                          /*   since they are in progress */
+#define AIO_ALLDONE     2 /* none of the requested operations could be */
+                          /*   canceled since they are already complete */
+
+/* lio_listio() options */
+
+/*
+ * LIO modes
+ */
+#define LIO_WAIT        0 /* calling process is to suspend until the */
+                          /*   operation is complete */
+#define LIO_NOWAIT      1 /* calling process is to continue execution while */
+                          /*   the operation is performed and no notification */
+                          /*   shall be given when the operation is completed */
+
+/*
+ * LIO opcodes
+ */
+#define LIO_NOP         0 /* no transfer is requested */
+#define LIO_READ        1 /* request a read() */
+#define LIO_WRITE       2 /* request a write() */
+#define LIO_SYNC        3 /* needed by aio_fsync() */
+
+/*
+ *  6.7.1.1 Asynchronous I/O Control Block, P1003.1b-1993, p. 151
+ */
+
+struct aiocb {
+  /* public */
+  int             aio_fildes;     /* File descriptor */
+  off_t           aio_offset;     /* File offset */
+  volatile void  *aio_buf;        /* Location of buffer */
+  size_t          aio_nbytes;     /* Length of transfer */
+  int             aio_reqprio;    /* Request priority offset */
+  struct sigevent aio_sigevent;   /* Signal number and value */
+  int             aio_lio_opcode; /* Operation to be performed */
+  /* private */
+  int		  error_code;      /* Used for aio_error() */
+  ssize_t	  return_value;     /* Used for aio_return() */
+};
+
+/*
+ *  6.7.2 Asynchronous Read, P1003.1b-1993, p. 154
+ */
+
+int aio_read(
+  struct aiocb  *aiocbp
+);
+
+/*
+ *  6.7.3 Asynchronous Write, P1003.1b-1993, p. 155
+ */
+
+int aio_write(
+  struct aiocb  *aiocbp
+);
+
+/*
+ *  6.7.4 List Directed I/O, P1003.1b-1993, p. 158
+ */
+
+int lio_listio(
+  int              mode,
+  struct aiocb    *__restrict const  list[__restrict],
+  int              nent,
+  struct sigevent *__restrict sig
+);
+
+/*
+ *  6.7.5 Retrieve Error of Asynchronous I/O Operation, P1003.1b-1993, p. 161
+ */
+
+int aio_error(
+  const struct aiocb  *aiocbp
+);
+
+/*
+ *  6.7.6 Retrieve Return Status of Asynchronous I/O Operation,
+ *        P1003.1b-1993, p. 162
+ */
+
+ssize_t aio_return(
+  const struct aiocb  *aiocbp
+);
+
+/**
+ * @brief Cancel asynchronous I/O operation.
+ * 
+ * 6.7.7 Cancel Asynchronous I/O Operation, P1003.1b-1993, p. 163
+ *
+ * @param[in] filedes is the file descriptor
+ * @param[in] aiocbp is a pointer to the asynchronous I/O control block
+ *
+ * @retval AIO_CANCELED The requested operation(s) were canceled.
+ * @retval AIO_NOTCANCELED Some of the requested operation(s) cannot be
+ * canceled since they are in progress.
+ * @retval AIO_ALLDONE None of the requested operation(s) could be canceled
+ * since they are already complete
+ */
+int aio_cancel(
+  int            filedes,
+  struct aiocb  *aiocbp
+);
+
+/*
+ *  6.7.7 Wait for Asynchronous I/O Request, P1003.1b-1993, p. 164
+ */
+
+int aio_suspend(
+  const struct aiocb  * const   list[],
+  int                     nent,
+  const struct timespec  *timeout
+);
+
+#if defined(_POSIX_SYNCHRONIZED_IO)
+
+/*
+ *  6.7.9 Asynchronous File Synchronization, P1003.1b-1993, p. 166
+ */
+
+int aio_fsync(
+  int            op,
+  struct aiocb  *aiocbp
+);
+
+#endif /* _POSIX_SYNCHRONIZED_IO */
+
+#endif /* _POSIX_ASYNCHRONOUS_IO */
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+/* end of include file */
-- 
2.17.1