12.06.2024 15:43, Amjad Alsharafi wrote:
These patches fix some bugs found when modifying files in vvfat.
First, there was a bug when writing to the cluster 2 or above of a file, it
will copy the cluster before it instead, so, when writing to cluster=2, the
content of cluster=1 will be copied into disk instead in its place.
Another issue was modifying the clusters of a file and adding new
clusters, this showed 2 issues:
- If the new cluster is not immediately after the last cluster, it will
cause issues when reading from this file in the future.
- Generally, the usage of info.file.offset was incorrect, and the
system would crash on abort() when the file is modified and a new
cluster was added.
Also, added some iotests for vvfat, covering the this fix and also
general behavior such as reading, writing, and creating files on the filesystem.
Including tests for reading/writing the first cluster which
would pass even before this patch.
...
Amjad Alsharafi (5):
vvfat: Fix bug in writing to middle of file
vvfat: Fix usage of `info.file.offset`
vvfat: Fix wrong checks for cluster mappings invariant
vvfat: Fix reading files with non-continuous clusters
iotests: Add `vvfat` tests
Actually, maybe the whole series is a good candidate for -stable, not just the
first fix. What do you think?
Thanks,
/mjt
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