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Compiled tree of Oasis Linux based on own branch at <https://hacktivis.me/git/oasis/> git clone https://anongit.hacktivis.me/git/oasis-root.git

aio_abi.h (3398B)

    

  1. /* include/linux/aio_abi.h
  2.  *
  3.  * Copyright 2000,2001,2002 Red Hat.
  4.  *
  5.  * Written by Benjamin LaHaise <bcrl@kvack.org>
  6.  *
  7.  * Distribute under the terms of the GPLv2 (see ../../COPYING) or under 
  8.  * the following terms.
  9.  *
  10.  * Permission to use, copy, modify, and distribute this software and its
  11.  * documentation is hereby granted, provided that the above copyright
  12.  * notice appears in all copies.  This software is provided without any
  13.  * warranty, express or implied.  Red Hat makes no representations about
  14.  * the suitability of this software for any purpose.
  15.  *
  16.  * IN NO EVENT SHALL RED HAT BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,
  17.  * SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF
  18.  * THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF RED HAT HAS BEEN ADVISED
  19.  * OF THE POSSIBILITY OF SUCH DAMAGE.
  20.  *
  21.  * RED HAT DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22.  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  23.  * PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND
  24.  * RED HAT HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES,
  25.  * ENHANCEMENTS, OR MODIFICATIONS.
  26.  */
  27. #ifndef __LINUX__AIO_ABI_H
  28. #define __LINUX__AIO_ABI_H
  30. #include <linux/types.h>
  31. #include <linux/fs.h>
  32. #include <asm/byteorder.h>
  34. typedef __kernel_ulong_t aio_context_t;
  36. enum {
  37. 	IOCB_CMD_PREAD = 0,
  38. 	IOCB_CMD_PWRITE = 1,
  39. 	IOCB_CMD_FSYNC = 2,
  40. 	IOCB_CMD_FDSYNC = 3,
  41. 	/* 4 was the experimental IOCB_CMD_PREADX */
  42. 	IOCB_CMD_POLL = 5,
  43. 	IOCB_CMD_NOOP = 6,
  44. 	IOCB_CMD_PREADV = 7,
  45. 	IOCB_CMD_PWRITEV = 8,
  46. };
  48. /*
  49.  * Valid flags for the "aio_flags" member of the "struct iocb".
  50.  *
  51.  * IOCB_FLAG_RESFD - Set if the "aio_resfd" member of the "struct iocb"
  52.  *                   is valid.
  53.  * IOCB_FLAG_IOPRIO - Set if the "aio_reqprio" member of the "struct iocb"
  54.  *                    is valid.
  55.  */
  56. #define IOCB_FLAG_RESFD		(1 << 0)
  57. #define IOCB_FLAG_IOPRIO	(1 << 1)
  59. /* read() from /dev/aio returns these structures. */
  60. struct io_event {
  61. 	__u64		data;		/* the data field from the iocb */
  62. 	__u64		obj;		/* what iocb this event came from */
  63. 	__s64		res;		/* result code for this event */
  64. 	__s64		res2;		/* secondary result */
  65. };
  67. /*
  68.  * we always use a 64bit off_t when communicating
  69.  * with userland.  its up to libraries to do the
  70.  * proper padding and aio_error abstraction
  71.  */
  73. struct iocb {
  74. 	/* these are internal to the kernel/libc. */
  75. 	__u64	aio_data;	/* data to be returned in event's data */
  77. #if defined(__BYTE_ORDER) ? __BYTE_ORDER == __LITTLE_ENDIAN : defined(__LITTLE_ENDIAN)
  78. 	__u32	aio_key;	/* the kernel sets aio_key to the req # */
  79. 	__kernel_rwf_t aio_rw_flags;	/* RWF_* flags */
  80. #elif defined(__BYTE_ORDER) ? __BYTE_ORDER == __BIG_ENDIAN : defined(__BIG_ENDIAN)
  81. 	__kernel_rwf_t aio_rw_flags;	/* RWF_* flags */
  82. 	__u32	aio_key;	/* the kernel sets aio_key to the req # */
  83. #else
  84. #error edit for your odd byteorder.
  85. #endif
  87. 	/* common fields */
  88. 	__u16	aio_lio_opcode;	/* see IOCB_CMD_ above */
  89. 	__s16	aio_reqprio;
  90. 	__u32	aio_fildes;
  92. 	__u64	aio_buf;
  93. 	__u64	aio_nbytes;
  94. 	__s64	aio_offset;
  96. 	/* extra parameters */
  97. 	__u64	aio_reserved2;	/* TODO: use this for a (struct sigevent *) */
  99. 	/* flags for the "struct iocb" */
  100. 	__u32	aio_flags;
  102. 	/*
  103. 	 * if the IOCB_FLAG_RESFD flag of "aio_flags" is set, this is an
  104. 	 * eventfd to signal AIO readiness to
  105. 	 */
  106. 	__u32	aio_resfd;
  107. }; /* 64 bytes */
  109. #undef IFBIG
  110. #undef IFLITTLE
  112. #endif /* __LINUX__AIO_ABI_H */