1 /* include/linux/aio_abi.h
3 * Copyright 2000,2001,2002 Red Hat.
5 * Written by Benjamin LaHaise <bcrl@kvack.org>
7 * Distribute under the terms of the GPLv2 (see ../../COPYING) or under
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27 #ifndef __LINUX__AIO_ABI_H
28 #define __LINUX__AIO_ABI_H
30 #include <asm/byteorder.h>
32 typedef unsigned long aio_context_t;
39 /* These two are experimental.
40 * IOCB_CMD_PREADX = 4,
48 /* read() from /dev/aio returns these structures. */
50 __u64 data; /* the data field from the iocb */
51 __u64 obj; /* what iocb this event came from */
52 __s64 res; /* result code for this event */
53 __s64 res2; /* secondary result */
56 #if defined(__LITTLE_ENDIAN)
57 #define PADDED(x,y) x, y
58 #elif defined(__BIG_ENDIAN)
59 #define PADDED(x,y) y, x
61 #error edit for your odd byteorder.
65 * we always use a 64bit off_t when communicating
66 * with userland. its up to libraries to do the
67 * proper padding and aio_error abstraction
71 /* these are internal to the kernel/libc. */
72 __u64 aio_data; /* data to be returned in event's data */
73 __u32 PADDED(aio_key, aio_reserved1);
74 /* the kernel sets aio_key to the req # */
77 __u16 aio_lio_opcode; /* see IOCB_CMD_ above */
85 /* extra parameters */
86 __u64 aio_reserved2; /* TODO: use this for a (struct sigevent *) */
93 #endif /* __LINUX__AIO_ABI_H */