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| author | Björn Stenberg <bjorn@haxx.se> | 2002-05-08 15:27:21 +0000 |
|---|---|---|
| committer | Björn Stenberg <bjorn@haxx.se> | 2002-05-08 15:27:21 +0000 |
| commit | 412917e1b6196fb5c50869f8963d9bc1105b094d (patch) | |
| tree | e607ceb635450accbac940366a0c379604e96983 /firmware/common | |
| parent | 1c3217909b444b86f87f976925f05ac05555cc6d (diff) | |
| download | rockbox-412917e1b6196fb5c50869f8963d9bc1105b094d.tar.gz rockbox-412917e1b6196fb5c50869f8963d9bc1105b094d.zip | |
Added comment
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@519 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware/common')
| -rw-r--r-- | firmware/common/file.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/firmware/common/file.c b/firmware/common/file.c index a5d9443aeb..9d18c613bf 100644 --- a/firmware/common/file.c +++ b/firmware/common/file.c | |||
| @@ -24,6 +24,15 @@ | |||
| 24 | #include "dir.h" | 24 | #include "dir.h" |
| 25 | #include "debug.h" | 25 | #include "debug.h" |
| 26 | 26 | ||
| 27 | /* | ||
| 28 | These functions provide a roughly POSIX-compatible file IO API. | ||
| 29 | |||
| 30 | Since the fat32 driver only manages sectors, we maintain a one-sector | ||
| 31 | cache for each open file. This way we can provide byte access without | ||
| 32 | having to re-read the sector each time. | ||
| 33 | The penalty is the RAM used for the cache and slightly more complex code. | ||
| 34 | */ | ||
| 35 | |||
| 27 | #define MAX_OPEN_FILES 4 | 36 | #define MAX_OPEN_FILES 4 |
| 28 | 37 | ||
| 29 | struct filedesc { | 38 | struct filedesc { |