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haiku/headers/private/system/vfs_defs.h

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* Introduced new header directory headers/private/system which is supposed to contain headers shared by kernel and userland (mainly libroot). * Moved quite a few private kernel headers to the new location. Split several kernel headers into a shared part and one that is still kernel private. Adjusted all affected Jamfiles and source in the standard x86 build accordingly. The build for other architectures and for test code may be broken. * Quite a bit of userland code still includes private kernel headers. Mostly those are <util/*> headers. The ones that aren't strictly kernel-only should be moved to some other place (maybe headers/private/shared/util). git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25486 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-05-14 07:55:16 +04:00
/*
VFS FIFO: Enlarge FIFO buffer sizes * Increase FIFO buffer capacity from 32 to 64 KiB and the FIFO atomic write size ({BUF_SIZE}) from 512 bytes to 4 KiB (both like Linux). * Fix *pathconf(..., _PC_PIPE_BUF). It was returning 4 KiB although the implemented atomic write size was 512 bytes only. Now both *pathconf() and the FIFO implementation refer to the same constant.
2013-11-25 15:40:58 +04:00
* Copyright 2002-2008, Axel Dörfler, axeld@pinc-software.de.
* Copyright 2013, Ingo Weinhold, ingo_weinhold@gmx.de.
* All rights reserved. Distributed under the terms of the MIT License.
* Introduced new header directory headers/private/system which is supposed to contain headers shared by kernel and userland (mainly libroot). * Moved quite a few private kernel headers to the new location. Split several kernel headers into a shared part and one that is still kernel private. Adjusted all affected Jamfiles and source in the standard x86 build accordingly. The build for other architectures and for test code may be broken. * Quite a bit of userland code still includes private kernel headers. Mostly those are <util/*> headers. The ones that aren't strictly kernel-only should be moved to some other place (maybe headers/private/shared/util). git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25486 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-05-14 07:55:16 +04:00
*
* Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
* Distributed under the terms of the NewOS License.
*/
#ifndef _SYSTEM_VFS_DEFS_H
#define _SYSTEM_VFS_DEFS_H
VFS FIFO: Enlarge FIFO buffer sizes * Increase FIFO buffer capacity from 32 to 64 KiB and the FIFO atomic write size ({BUF_SIZE}) from 512 bytes to 4 KiB (both like Linux). * Fix *pathconf(..., _PC_PIPE_BUF). It was returning 4 KiB although the implemented atomic write size was 512 bytes only. Now both *pathconf() and the FIFO implementation refer to the same constant.
2013-11-25 15:40:58 +04:00
#include <limits.h>
* Introduced new header directory headers/private/system which is supposed to contain headers shared by kernel and userland (mainly libroot). * Moved quite a few private kernel headers to the new location. Split several kernel headers into a shared part and one that is still kernel private. Adjusted all affected Jamfiles and source in the standard x86 build accordingly. The build for other architectures and for test code may be broken. * Quite a bit of userland code still includes private kernel headers. Mostly those are <util/*> headers. The ones that aren't strictly kernel-only should be moved to some other place (maybe headers/private/shared/util). git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25486 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-05-14 07:55:16 +04:00
#include <sys/stat.h>
#include <SupportDefs.h>
struct fd_info {
int number;
int32 open_mode;
dev_t device;
ino_t node;
};
VFS FIFO: Enlarge FIFO buffer sizes * Increase FIFO buffer capacity from 32 to 64 KiB and the FIFO atomic write size ({BUF_SIZE}) from 512 bytes to 4 KiB (both like Linux). * Fix *pathconf(..., _PC_PIPE_BUF). It was returning 4 KiB although the implemented atomic write size was 512 bytes only. Now both *pathconf() and the FIFO implementation refer to the same constant.
2013-11-25 15:40:58 +04:00
/* maximum write size to a pipe/FIFO that is guaranteed not to be interleaved
with other writes (aka {PIPE_BUF}; must be >= _POSIX_PIPE_BUF) */
#define VFS_FIFO_ATOMIC_WRITE_SIZE (4 * 1024)
/* pipe/FIFO buffer capacity */
#define VFS_FIFO_BUFFER_CAPACITY (64 * 1024)
// make sure the constant values are sane
#if VFS_FIFO_ATOMIC_WRITE_SIZE < _POSIX_PIPE_BUF
# error VFS_FIFO_ATOMIC_WRITE_SIZE < _POSIX_PIPE_BUF!
#endif
* Introduced new header directory headers/private/system which is supposed to contain headers shared by kernel and userland (mainly libroot). * Moved quite a few private kernel headers to the new location. Split several kernel headers into a shared part and one that is still kernel private. Adjusted all affected Jamfiles and source in the standard x86 build accordingly. The build for other architectures and for test code may be broken. * Quite a bit of userland code still includes private kernel headers. Mostly those are <util/*> headers. The ones that aren't strictly kernel-only should be moved to some other place (maybe headers/private/shared/util). git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25486 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-05-14 07:55:16 +04:00
#endif /* _SYSTEM_VFS_DEFS_H */
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