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2 Commits

Author SHA1 Message Date
Angus Gratton
f4ab9d9247 extmod/vfs_blockdev: Implement common helper for read and write. 
- Code size saving as all of these functions are very similar.
- Resolves the "TODO" of the plain read and write functions not propagating
  errors. An error in the underlying block device now causes VFatFs to
  return EIO, for example.

This work was funded through GitHub Sponsors.

Signed-off-by: Angus Gratton <angus@redyak.com.au>
 2024-09-26 22:08:48 +10:00
Angus Gratton
4f6d4b2b49 extmod/vfs_blockdev: Check block device function positive results. 
A positive result here can result in eventual memory corruption
as littlefs expects the result of a cache read/write function to be
0 or a negative integer for an error.

Closes #13046

This work was funded through GitHub Sponsors.

Signed-off-by: Angus Gratton <angus@redyak.com.au>
 2024-09-26 22:08:48 +10:00