[Bug 1796661] [NEW] Firefox can't download files to an fscrypt protected, unlocked folder

[Piotr Kołaczkowski]

Public bug reported:

My Downloads folder is encrypted by fscrypt. I can save and read files
in there.  However, for Firefox - all downloads fail and it says only
"download failed" and offers a button to retry which fails again. After
a failed attempt, a file is created with a proper file name but no
content (0 bytes).

When I changed the download dir to a different non-fscrypted folder,
everything works properly and files do get properly saved.

I switched to Chromium and Chromium has no problems downloading files
into any dirs, regardless encrypted or not.

ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: firefox 62.0.3+build1-0ubuntu1
ProcVersionSignature: Ubuntu 4.18.0-8.9-generic 4.18.7
Uname: Linux 4.18.0-8-generic x86_64
AddonCompatCheckDisabled: False
ApportVersion: 2.20.10-0ubuntu11
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  pkolaczk   3692 F.... pulseaudio
 /dev/snd/pcmC0D0c:   pkolaczk   3692 F...m pulseaudio
 /dev/snd/pcmC0D0p:   pkolaczk   3692 F...m pulseaudio
BuildID: 20181002091723
Channel: Unavailable
CurrentDesktop: ubuntu:GNOME
Date: Mon Oct  8 12:10:57 2018
DistributionChannelDescriptor:
 # This is a distribution channel descriptor
 # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
 canonical-oem-somerville-xenial-amd64-20160624-2
Extensions: extensions.sqlite corrupt or missing
ForcedLayersAccel: False
IncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite)
InstallationDate: Installed on 2017-04-12 (543 days ago)
InstallationMedia: Ubuntu 16.04 "Xenial" - Build amd64 LIVE Binary 20160624-10:47
IpRoute:
 default via 192.168.0.1 dev enxd481d7358c11 proto dhcp metric 100 
 169.254.0.0/16 dev virbr0 scope link metric 1000 linkdown 
 192.168.0.0/24 dev enxd481d7358c11 proto kernel scope link src 192.168.0.2 metric 100 
 192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1 linkdown
Locales: extensions.sqlite corrupt or missing
Plugins: Shockwave Flash - /usr/lib/adobe-flashplugin/libflashplayer.so (adobe-flashplugin)
PrefSources: prefs.js
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=pl_PL.UTF-8
 SHELL=/bin/bash
Profiles: Profile0 (Default) - LastVersion=62.0.3/20181002091723
RelatedPackageVersions: adobe-flashplugin 1:20180911.1-0ubuntu0.18.04.1
RunningIncompatibleAddons: False
SourcePackage: firefox
Themes: extensions.sqlite corrupt or missing
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/24/2018
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.11.0
dmi.board.name: 06X96V
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.11.0:bd07/24/2018:svnDellInc.:pnPrecision5520:pvr:rvnDellInc.:rn06X96V:rvrA00:cvnDellInc.:ct10:cvr:
dmi.product.family: Precision
dmi.product.name: Precision 5520
dmi.product.sku: 07BF
dmi.sys.vendor: Dell Inc.

** Affects: firefox (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug cosmic

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Title:
  Firefox can't download files to an fscrypt protected, unlocked folder

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