fb52b1f8b4
* 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.
41 lines
986 B
C
41 lines
986 B
C
/*
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* Copyright 2002-2008, Axel Dörfler, axeld@pinc-software.de.
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* Copyright 2013, Ingo Weinhold, ingo_weinhold@gmx.de.
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* All rights reserved. Distributed under the terms of the MIT License.
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*
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* Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
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* Distributed under the terms of the NewOS License.
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*/
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#ifndef _SYSTEM_VFS_DEFS_H
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#define _SYSTEM_VFS_DEFS_H
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#include <limits.h>
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#include <sys/stat.h>
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#include <SupportDefs.h>
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struct fd_info {
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int number;
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int32 open_mode;
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dev_t device;
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ino_t node;
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};
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/* maximum write size to a pipe/FIFO that is guaranteed not to be interleaved
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with other writes (aka {PIPE_BUF}; must be >= _POSIX_PIPE_BUF) */
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#define VFS_FIFO_ATOMIC_WRITE_SIZE (4 * 1024)
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/* pipe/FIFO buffer capacity */
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#define VFS_FIFO_BUFFER_CAPACITY (64 * 1024)
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// make sure the constant values are sane
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#if VFS_FIFO_ATOMIC_WRITE_SIZE < _POSIX_PIPE_BUF
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# error VFS_FIFO_ATOMIC_WRITE_SIZE < _POSIX_PIPE_BUF!
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#endif
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#endif /* _SYSTEM_VFS_DEFS_H */
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