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TODO.rst

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TODO

  • ModifiedTime is the only attribute required for all files.
  • Other attributes can be managed using set/remove API calls but requires the (full) file path.
  • Attributes not currently managed for directories. ModifiedTime should be set by mkdir call.
  • Require API to set/remove attributes on open file or directory - avoids need to keep note of full file path and repeatedly perform path lookup, etc.
  • Require API to reconstruct full path for open file (so we don't need to store it).
  • Write mode checks

littlefs uses asserts to check file is opened in correct mode, so when build with asserts disabled some calls may succeed (e.g. lfs_file_rawwrite).

These statements should be identified and failure path checked, ideally returning an error code. Alternatively implement exception handling (setjmp/longjmp).

Done

Add lfs_statcfg, lfs_dir_readcfg functions
Like lfs_file_opencfg, these allow attributes to be read to reduce disk accesses. Testing with Basic_IFS sample reduced readcount from 14109 to 11603.
Increase LFS_CACHE_SIZE from 16 to 32 bytes
Reduces readcount further to 7667