mirror of
https://github.com/Rockbox/rockbox.git
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7ea64a315b
This reverts commit dcec6828a3.
This did not solve the reported problem, and it turns out that the original
code did the right thing with respect to the device's logical sector size.
Change-Id: I5bed2520ba8f5ca01df0ddd71588d3ed69c1d77c
117 lines
4.1 KiB
C
117 lines
4.1 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2017 by Michael Sevakis
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef FS_DEFINES_H
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#define FS_DEFINES_H
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/** Tuneable parameters **/
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#if 0
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/* Define this just in case you're doing something that may crash a lot and
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want less write caching */
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#define FS_MIN_WRITECACHING
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#endif
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#ifndef MAX_PATH
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#define MAX_PATH 260
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#endif
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#define MAX_COMPNAME 260
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/* limits for number of open descriptors - if you increase these values, make
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certain that the disk cache has enough available buffers */
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#if MEMORYSIZE < 8
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#define MAX_OPEN_FILES 11
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#define MAX_OPEN_DIRS 12
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#else
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#define MAX_OPEN_FILES 31
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#define MAX_OPEN_DIRS 32
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#endif /* MEMORYSIZE */
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/* internal functions open streams as well; make sure they don't fail if all
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user descs are busy; this needs to be at least the greatest quantity needed
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at once by all internal functions */
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#define MOUNT_AUX_FILEOBJS 1
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#ifdef HAVE_DIRCACHE
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#define DIRCACHE_AUX_FILEOBJS 1
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#else
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#define DIRCACHE_AUX_FILEOBJS 0
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#endif
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#define AUX_FILEOBJS (2+DIRCACHE_AUX_FILEOBJS+MOUNT_AUX_FILEOBJS)
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/* number of components statically allocated to handle the vast majority
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of path depths; should maybe be tuned for >= 90th percentile but for now,
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imma just guessing based on something like:
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root + 'Music' + 'Artist' + 'Album' + 'Disc N' + filename */
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#define STATIC_PATHCOMP_NUM 6
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/* unsigned value that will also hold the off_t range we need without
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overflow */
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#define file_size_t uint32_t
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#ifdef __USE_FILE_OFFSET64
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/* if we want, we can deal with files up to 2^32-1 bytes-- the full FAT16/32
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range */
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#define FILE_SIZE_MAX (0xffffffffu)
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#else
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/* file contents and size will be preserved by the APIs so long as ftruncate()
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isn't used; bytes passed 2^31-1 will not accessible nor will writes succeed
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that would extend the file beyond the max for a 32-bit off_t */
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#define FILE_SIZE_MAX (0x7fffffffu)
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#endif
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/* if file is "large(ish)", then get rid of the contents now rather than
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lazily when the file is synced or closed in order to free-up space */
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#define O_TRUNC_THRESH 65536
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/* This needs enough for all file handles to have a buffer in the worst case
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* plus at least one reserved exclusively for the cache client and a couple
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* for other file system code. The buffers are put to use by the cache if not
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* taken for another purpose (meaning nothing is wasted sitting fallow).
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*
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* One map per volume is maintained in order to avoid collisions between
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* volumes that would slow cache probing. IOC_MAP_NUM_ENTRIES is the number
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* for each map per volume. The buffers themselves are shared.
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*/
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#if MEMORYSIZE < 8
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#define DC_NUM_ENTRIES 32
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#define DC_MAP_NUM_ENTRIES 128
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#else
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#define DC_NUM_ENTRIES 64
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#define DC_MAP_NUM_ENTRIES 256
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#endif /* MEMORYSIZE */
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/* increasing this will increase the total memory used by the cache; the
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cache, as noted in disk_cache.h, has other minimum requirements that may
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prevent reducing its number of entries in order to compensate */
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#ifndef SECTOR_SIZE
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#define SECTOR_SIZE 512
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#endif
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/* this _could_ be larger than a sector if that would ever be useful */
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#ifdef MAX_VARIABLE_LOG_SECTOR
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#define DC_CACHE_BUFSIZE MAX_VARIABLE_LOG_SECTOR
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#else
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#define DC_CACHE_BUFSIZE SECTOR_SIZE
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#endif
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#endif /* FS_DEFINES_H */
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