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Don't decrease FileSize on write #107

merged 2 commits into from Sep 16, 2017


2 participants

saibotu commented Sep 15, 2017

This prevents decreasing the reported FileSize/EndOfFile when only part of a file is written, which fixes compatibility with various applications.


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billziss-gh commented Sep 15, 2017

@saibotu thanks for the PR. It does seem that you have identified a straight bug and provided a fix for it. THANK YOU!

I am not sure how this has not been caught by any tests. FSX is pretty good at catching things like this (but I note now that it is not being run for any of the example FUSE file systems). I am going to test locally and confirm the problem and its resolution.

Lastly in order for me to accept contributions to this project I require that you add your name and email address to the Contributors document:

This effectively signs the document, assigns joint copyright to your change and identifies you as a contributor. You only need to do this one time on your first contribution.


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billziss-gh commented Sep 16, 2017

@saibotu thank you for signing the agreement.

I have tested the PR locally with FSX. A WinFsp-FUSE file system (e.g. passthrough-fuse) fails fast under FSX without your fix. FSX has no complaints when your fix is added.

I am accepting this PR. I have also modified the WinFsp test suite to run FSX over passthrough-fuse; this will be the next commit.

@billziss-gh billziss-gh merged commit 18bf6ca into billziss-gh:master Sep 16, 2017

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continuous-integration/appveyor/pr AppVeyor build succeeded

@saibotu saibotu deleted the saibotu:pr-writesize branch Sep 17, 2017

@billziss-gh billziss-gh added this to the v1.2 milestone Oct 20, 2017

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