[Bug 53683] Mod Organzer 2 fails to read random directories and files

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=53683

Tuupertunut  changed:

What    |Removed                     |Added
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--- Comment #12 from Tuupertunut  ---
My Arma 3 also fails to find random files and directories, and I think I found
the reason.

https://github.com/wine-staging/wine-staging/blob/08ad4107613a980f533f4784a2...

Here this patch is using chdir(), which also affects other threads in the same
process. Whenever this code runs, for a little while, all other threads see the
wrong working directory and therefore fail to read any files with relative
paths during this period. Later the original working directory is restored with
fchdir() and the files can be found again.

You should not use chdir() when traversing path elements but for example use
file descriptors instead.