Files containing AAAORDID^AAA get \0-padded to 20KiB when loaded into LibreOffice only from a cryfs-monted folder

[Gallaecio]

It had been happening to me since I started working with ^-separated CSV files. When opening such a file from a cryfs-mounted folder with LibreOffice, the file size would change to 20KiB.

Steps to Reproduce the Problem

Today I’ve been able to isolate a small set of steps to reproduce the issue:

$ echo "AAAORDID^AAA" > a.csv  # Where A can be any character, as far as I could tell, the original CSV file had "RECORDID^STOREID…"
$ od -c a.csv 
0000000   A   A   A   O   R   D   I   D   ^   A   A   A  \n
0000015
$ libreoffice a.csv  # You get a dialog to import the CSV data, simply cancel
$ od -c a.csv 
0000000   A   A   A   O   R   D   I   D   ^   A   A   A  \n  \0  \0  \0
0000020  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0
*
0050000

I’ve reported it here because it does not happen outside cryfs-mounted folders, only on any of my two cryfs-mounted folders. But I does not happen with applications other than LibreOffice, so if you think the issue is in their side, I’ll gladly report the issue to them instead.

Specifications

• CryFS Version: 0.9.9
• Operating System (incl. Version): Linux 4.18.12-1-CHAKRA Fix broken link to https biicode page #1 SMP PREEMPT x86_64 GNU/Linux

[smessmer]

Thanks for reporting. I tracked it down and this was caused by the same race condition that caused #224 .

This is fixed.

• for the 0.9 release series in 49a8c68 (will be in 0.9.10)
• for the 0.10 release series in 1da3e6c (will be in 0.10-rc2)

Please build from either of these commits and let me know if it works.

[Gallaecio]

Verified to be working in 0.9.10. Thank you so much!!!