diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/linux/aio_abi.h |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'include/linux/aio_abi.h')
-rw-r--r-- | include/linux/aio_abi.h | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/include/linux/aio_abi.h b/include/linux/aio_abi.h new file mode 100644 index 000000000000..30fdcc89d142 --- /dev/null +++ b/include/linux/aio_abi.h | |||
@@ -0,0 +1,92 @@ | |||
1 | /* 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 | ||
29 | |||
30 | #include <asm/byteorder.h> | ||
31 | |||
32 | typedef unsigned long aio_context_t; | ||
33 | |||
34 | enum { | ||
35 | IOCB_CMD_PREAD = 0, | ||
36 | IOCB_CMD_PWRITE = 1, | ||
37 | IOCB_CMD_FSYNC = 2, | ||
38 | IOCB_CMD_FDSYNC = 3, | ||
39 | /* These two are experimental. | ||
40 | * IOCB_CMD_PREADX = 4, | ||
41 | * IOCB_CMD_POLL = 5, | ||
42 | */ | ||
43 | IOCB_CMD_NOOP = 6, | ||
44 | }; | ||
45 | |||
46 | /* read() from /dev/aio returns these structures. */ | ||
47 | struct io_event { | ||
48 | __u64 data; /* the data field from the iocb */ | ||
49 | __u64 obj; /* what iocb this event came from */ | ||
50 | __s64 res; /* result code for this event */ | ||
51 | __s64 res2; /* secondary result */ | ||
52 | }; | ||
53 | |||
54 | #if defined(__LITTLE_ENDIAN) | ||
55 | #define PADDED(x,y) x, y | ||
56 | #elif defined(__BIG_ENDIAN) | ||
57 | #define PADDED(x,y) y, x | ||
58 | #else | ||
59 | #error edit for your odd byteorder. | ||
60 | #endif | ||
61 | |||
62 | /* | ||
63 | * we always use a 64bit off_t when communicating | ||
64 | * with userland. its up to libraries to do the | ||
65 | * proper padding and aio_error abstraction | ||
66 | */ | ||
67 | |||
68 | struct iocb { | ||
69 | /* these are internal to the kernel/libc. */ | ||
70 | __u64 aio_data; /* data to be returned in event's data */ | ||
71 | __u32 PADDED(aio_key, aio_reserved1); | ||
72 | /* the kernel sets aio_key to the req # */ | ||
73 | |||
74 | /* common fields */ | ||
75 | __u16 aio_lio_opcode; /* see IOCB_CMD_ above */ | ||
76 | __s16 aio_reqprio; | ||
77 | __u32 aio_fildes; | ||
78 | |||
79 | __u64 aio_buf; | ||
80 | __u64 aio_nbytes; | ||
81 | __s64 aio_offset; | ||
82 | |||
83 | /* extra parameters */ | ||
84 | __u64 aio_reserved2; /* TODO: use this for a (struct sigevent *) */ | ||
85 | __u64 aio_reserved3; | ||
86 | }; /* 64 bytes */ | ||
87 | |||
88 | #undef IFBIG | ||
89 | #undef IFLITTLE | ||
90 | |||
91 | #endif /* __LINUX__AIO_ABI_H */ | ||
92 | |||