diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-17 02:20:36 +0400 |
---|---|---|
committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-17 02:20:36 +0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/linux/aio_abi.h | |
download | linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz |
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 @@ +/* linux/aio_abi.h + * + * Copyright 2000,2001,2002 Red Hat. + * + * Written by Benjamin LaHaise <bcrl@kvack.org> + * + * Distribute under the terms of the GPLv2 (see ../../COPYING) or under + * the following terms. + * + * Permission to use, copy, modify, and distribute this software and its + * documentation is hereby granted, provided that the above copyright + * notice appears in all copies. This software is provided without any + * warranty, express or implied. Red Hat makes no representations about + * the suitability of this software for any purpose. + * + * IN NO EVENT SHALL RED HAT BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, + * SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF + * THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF RED HAT HAS BEEN ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * + * RED HAT DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND + * RED HAT HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, + * ENHANCEMENTS, OR MODIFICATIONS. + */ +#ifndef __LINUX__AIO_ABI_H +#define __LINUX__AIO_ABI_H + +#include <asm/byteorder.h> + +typedef unsigned long aio_context_t; + +enum { + IOCB_CMD_PREAD = 0, + IOCB_CMD_PWRITE = 1, + IOCB_CMD_FSYNC = 2, + IOCB_CMD_FDSYNC = 3, + /* These two are experimental. + * IOCB_CMD_PREADX = 4, + * IOCB_CMD_POLL = 5, + */ + IOCB_CMD_NOOP = 6, +}; + +/* read() from /dev/aio returns these structures. */ +struct io_event { + __u64 data; /* the data field from the iocb */ + __u64 obj; /* what iocb this event came from */ + __s64 res; /* result code for this event */ + __s64 res2; /* secondary result */ +}; + +#if defined(__LITTLE_ENDIAN) +#define PADDED(x,y) x, y +#elif defined(__BIG_ENDIAN) +#define PADDED(x,y) y, x +#else +#error edit for your odd byteorder. +#endif + +/* + * we always use a 64bit off_t when communicating + * with userland. its up to libraries to do the + * proper padding and aio_error abstraction + */ + +struct iocb { + /* these are internal to the kernel/libc. */ + __u64 aio_data; /* data to be returned in event's data */ + __u32 PADDED(aio_key, aio_reserved1); + /* the kernel sets aio_key to the req # */ + + /* common fields */ + __u16 aio_lio_opcode; /* see IOCB_CMD_ above */ + __s16 aio_reqprio; + __u32 aio_fildes; + + __u64 aio_buf; + __u64 aio_nbytes; + __s64 aio_offset; + + /* extra parameters */ + __u64 aio_reserved2; /* TODO: use this for a (struct sigevent *) */ + __u64 aio_reserved3; +}; /* 64 bytes */ + +#undef IFBIG +#undef IFLITTLE + +#endif /* __LINUX__AIO_ABI_H */ + |