Fusermount on android (rclone mount)

[swie]

Hello.
I succesfully instaled fusermount on my LG k350n device (stock rom with supersu). But I have a problem doing rclone mount commad.
See below:

 $ rclone mount gcache: gdrive --allow-other --cache-db-purge --allow-non-empty --buffer-size 256M --dir-cache-time 72h --drive-chunk-size 32M --timeout 1h --vfs-cache-mode minimal --vfs-read-chunk-size 128M --vfs-read-chunk-size-limit 1G &
[1] 30993
$ 2019/10/22 13:43:43 mount helper error: fusermount: failed to open /dev/fuse: Permission denied
2019/10/22 13:43:43 Fatal error: failed to mount FUSE fs: fusermount: exit status 1

I try change permissions of fuse file but nothig helps.

 $ ls -al fuse                                     crwxrwxrwx 1 u0_a138 u0_a138 10, 229 Sep 29 10:00 fuse

Do You know how fix this ?
Sorry for my bugs in english language

 

[agnostic-apollo]

Hello.
I succesfully instaled fusermount on my LG k350n device (stock rom with supersu). But I have a problem doing rclone mount commad.
See below:

 $ rclone mount gcache: gdrive --allow-other --cache-db-purge --allow-non-empty --buffer-size 256M --dir-cache-time 72h --drive-chunk-size 32M --timeout 1h --vfs-cache-mode minimal --vfs-read-chunk-size 128M --vfs-read-chunk-size-limit 1G &
[1] 30993
$ 2019/10/22 13:43:43 mount helper error: fusermount: failed to open /dev/fuse: Permission denied
2019/10/22 13:43:43 Fatal error: failed to mount FUSE fs: fusermount: exit status 1

I try change permissions of fuse file but nothig helps.

 $ ls -al fuse                                     crwxrwxrwx 1 u0_a138 u0_a138 10, 229 Sep 29 10:00 fuse

Do You know how fix this ?
Sorry for my bugs in english language

run command with su permissions, if using termux install tsu or sudo

 

[swie]

Thank you.
Now. I have mounted my gdrive in /mnt/gdrive and I can list my files in termux. But only in termux.
So next question is how do it visible for any installed app in my phone ?
There is also possible to saw this in my computer connected with usb cable ?

 

[agnostic-apollo]

For people who are getting empty folders outside termux, is most likely because mount namespace seperation is enabled in their supersu or magisk. I don't use magisk so don't know the exact option but for supersu, just uncheck "Mount namespace seperation" in its settings and reboot and try after that.

Thank you.
Now. I have mounted my gdrive in /mnt/gdrive and I can list my files in termux. But only in termux.
So next question is how do it visible for any installed app in my phone ?
There is also possible to saw this in my computer connected with usb cable ?

check above... computer one over usb is probably not possible, atleast easily... set up rclone on computer with the same rclone config file, no point in connecting over a usb cable...

 

[mirfatif]

On Magisk set "Mount Namespace Mode" to "Global". This can be helpful: https://android.stackexchange.com/a/200449/218526

 

[swie]

On Magisk set "Mount Namespace Mode" to "Global". This can be helpful: https://android.stackexchange.com/a/200449/218526

Sorry but it's not working for me. Still I don't have new partition visible in other apps.
Maybe I mount in wrong directory ? Should be in /storage ?

 

[mirfatif]

Sorry but it's not working for me. Still I don't have new partition visible in other apps.
Maybe I mount in wrong directory ? Should be in /storage ?

You need to take care of four things: 1. Ownership 2. Permission mode 3. SELinux context 4. Mount namesapce. Even if one is misconfigured, non-root apps won't be able to access mount point.

 

[swie]

It sounds complicated.
Can You help me step by step how do it ?
I don't know how check all this points.

 

[mirfatif]

It sounds complicated.
Can You help me step by step how do it ?
I don't know how check all this points.

See this answer.

 

[ddogishere]

hi is there link to a Step guide to view my unlimited gdrive as Plex server on rooted/magisk android himedia q10 pro?

Many thanks.

 

[ddogishere]

Hi all in rclone I get message:not enough space when copy or mount 1gb+ file to storage/cloud written gdrive unlimited storage any idea why?
Thx

 

[swie]

See this answer.

Still withought succes.
I use command

rclone mount gcache: /mnt/runtime/write/emulated/0/gdrive --uid=0 --gid=9997 --umask=022 --allow-other --cache-db-purge --allow-non-empty --buffer-size 64M --dir-cache-time 72h --drive-chunk-size 16M  --timeout 1h  --vfs-cache-mode minimal --vfs-read-chunk-size 128M --vfs-read-chunk-size-limit 1G &

So I set permissions like another visible folder. But then my cloud files are visible only for root user.
What command should be correct and where I must mount ?
Please help.

 

[agnostic-apollo]

Still withought succes.
I use command

rclone mount gcache: /mnt/runtime/write/emulated/0/gdrive --uid=0 --gid=9997 --umask=022 --allow-other --cache-db-purge --allow-non-empty --buffer-size 64M --dir-cache-time 72h --drive-chunk-size 16M  --timeout 1h  --vfs-cache-mode minimal --vfs-read-chunk-size 128M --vfs-read-chunk-size-limit 1G &

So I set permissions like another visible folder. But then my cloud files are visible only for root user.
What command should be correct and where I must mount ?
Please help.

alas...

you are supposed to run rclone mount command to some dir outside the .../runtime/.../emulated/* directory like inside /mnt/grdrive and then run "mount -o bind" commands from /mnt/gdrive to all 3 runtime dirs

I have written a few bash scripts and tasker projects that handles all this safely... the bash scripts can be uploaded in a day or two, have to do some testing and write documentation... let me know if anybody needs them... testers would be helpful actually...

For now, try following the following...
hopefully it should help and work for you, working for me. I haven't tested the android version <6 code but it should work...

###rclone mount commands must be run from global mount namespace, otherwise mounts will not be seen outside the terminal/shell and you will get empty directories in other apps
#check if you are in global namespace
[[ "$(readlink /proc/1/ns/mnt)" == "$(readlink /proc/self/ns/mnt)" ]] && echo "using global mount namespace" || "not using global mount namespace"

#If not, then in your superuser app, disable mount namespace separation or enable global mount namespace and reboot device
#SuperSu Settings -> Uncheck "Mount namespace separation"
#Magisk  Settings -> Set "Mount Namespace Mode" to "Global"



####mount
#remount android rootfs as rw
mount -o rw,remount /

#create main mount point
mkdir -p "/mnt/rclone_gdrive"

#run rclone mount command
rclone mount --daemon --allow-other "gdrive:" "/mnt/rclone_gdrive"

#create bind mount points so that all apps can see remote
#create bind mount point directory and set permissions
mkdir -p "/data/media/0/rclone_gdrive"
chown media_rw:media_rw "/data/media/0/rclone_gdrive"
chmod 0700 "/data/media/0/rclone_gdrive"

#run bind mount commands for android version >=6
mount -o bind "/mnt/rclone_gdrive" "/mnt/runtime/default/emulated/0/rclone_gdrive"
mount -o bind "/mnt/rclone_gdrive" "/mnt/runtime/read/emulated/0/rclone_gdrive"
mount -o bind "/mnt/rclone_gdrive" "/mnt/runtime/write/emulated/0/rclone_gdrive"

#run bind mount commands for android version <6
mount -o bind "/mnt/rclone_gdrive" "/data/media/0/rclone_gdrive"
mount -o bind "/mnt/rclone_gdrive" "/storage/emulated/0/rclone_gdrive"

#remount android rootfs back as ro
mount -o ro,remount /

#note that 
#android version >=6 uses runtime permissions model and hence there are runtime mounts
"/data/media/0" is the main ext4 filesystem which is emulated/mounted on "/mnt/runtime/{default,read,write}/emulated/0" and "/storage/emulated/0" using sdcardfs filesystem
#apps can only see the "/storage/emulated/0" depending on the permissions the app has
#bind mounting on all 3 runtime directories may be necessary depending on the device
#in my LG G5 7.0, it is necessary, and bind mounting on "/mnt/runtime/default/emulated/0" automatically creates the mount on "/storage/emulated/0"
#if that isn't being created then manually create it
#for versions below use install-time permissions model and there are no runtime mounts
#instead "/data/media/0" is just mounted at "/storage/emulated/0" using fuse filesystem
#the "0" indicated the user "0"



###unmount
#kill rclone mount command
pgrep -f "rclone mount .* /mnt/rclone_gdrive.*" | xargs kill

#run mount command to check all active mounts
mount

#if "gdrive: /mnt/rclone_gdrive" is still listed, it means rclone mount command quit with unmounting it
#this could be because some process like your file browser was using the mount point when rclone mount command was killed
#try unmounting main mount point manually
umount "/mnt/rclone_gdrive"
#you may get target or resource is busy errors
#run fuser to kill all processes using mount point
fuser -mks "/mnt/rclone_gdrive"
#then unmount
umount "/mnt/rclone_gdrive"
#if instead you got transport endpoint not connected errors
#then lazy unmount
umount -l "/mnt/rclone_gdrive"
#invalid arguments errors would mean that mount point is not mounted

#unmount all bind mount points for android version >=6
umount "/mnt/runtime/default/emulated/0/rclone_gdrive"
umount "/mnt/runtime/read/emulated/0/rclone_gdrive"
umount "/mnt/runtime/write/emulated/0/rclone_gdrive"

#run bind mount commands for android version <6
umount "/data/media/0/rclone_gdrive"
umount "/storage/emulated/0/rclone_gdrive"


###refresh rclone mount point so that any changes in remote can be seen
#sending SIGHUP to rclone mount command makes it drop all caches
#otherwise changes appear after cache timeout is over
pgrep -f "rclone mount .* /mnt/rclone_gdrive.*" | xargs kill -s SIGHUP

 

[mirfatif]

Still withought succes.
I use command

rclone mount gcache: /mnt/runtime/write/emulated/0/gdrive --uid=0 --gid=9997 --umask=022 --allow-other --cache-db-purge --allow-non-empty --buffer-size 64M --dir-cache-time 72h --drive-chunk-size 16M  --timeout 1h  --vfs-cache-mode minimal --vfs-read-chunk-size 128M --vfs-read-chunk-size-limit 1G &

So I set permissions like another visible folder. But then my cloud files are visible only for root user.
What command should be correct and where I must mount ?
Please help.

I just tested:

~# nsenter -t 1 -m -- rclone mount GDrive: /mnt/runtime/write/emulated/0/GDrive --gid 9997 --dir-perms 0771 --file-perms 0660 --umask=0 --allow-other

And it works perfectly. My file explorer and gallery apps are able to see the files. Rclone doesn't accept mount "--option" at the moment, so can't pass "context=" option. But the default SELinux label for FUSE (ubject_r:fuse:s0) is readable/writable by apps in default SELinux policy, so it works in "enforcing" mode.
Mounting to "read" and "default" views isn't necessary. READ_EXTERNAL_STORAGE and WRITE_EXTERNAL_STORAGE belong to same permission group. So granting one to an app also grants the other (except if you explicitly deny one using "pm"). "default" is only to let apps (which don't have READ|WRITE STORAGE permission) traverse "/sdcard/Android/data" directories, no other files in "/sdcard" are readable at all.
Also in my experience mounting to one view also propagates to the other two (at least on "sdcardfs").

 

[agnostic-apollo]

I just tested:

~# nsenter -t 1 -m rclone mount GDrive: /mnt/runtime/write/emulated/0/GDrive --gid 9997 --dir-perms 0771 --file-perms 0660 --umask=0 --allow-other

And it works perfectly. My file explorer and gallery apps are able to see the files. Rclone doesn't accept mount "--option" at the moment, so can't pass "context=" option. But the default SELinux label for FUSE (ubject_r:fuse:s0) is readable/writable by apps in default SELinux policy.
Mounting to "read" and "default" views isn't necessary. READ_EXTERNAL_STORAGE and WRITE_EXTERNAL_STORAGE belong to same permission group. So granting one to an app also grants the other (except if you explicitly deny one using "pm"). "default" is only to let apps (which don't have READ|WRITE STORAGE permission) traverse "/sdcard/Android/data" directories, no other files in "/sdcard" are readable at all.
Also in my experience mounting to one view also propagates to the other two, so mounting to all isn't necessary.

no propogation in my case whether i bind mount at default or write, like i said, it would depend on the device itself, it might not be universal... mounting to only write does give apps access in my case but maintaining the convention of mounting to all 3 runtime directories should be maintained like its done for internal and external storage by android, even though it might not be necessary for most people, but it could potentially break on some random device, custom implementation or use case and then those people are left with an unknown bug and bang their head about it

 

[mirfatif]

no propogation in my case whether i bind mount at default or write, like i said, it would depend on the device itself, it might not be universal...

I can't recall exactly what was the case with FUSE (it's been a few years), but with "sdcardfs" emulation "/mnt/runtime/read/emulated" and "/mnt/runtime/write/emulated" are actually bind mounted from "/mnt/runtime/default/emulated" first, then remounted with changed permissions. So mounting on one VIEW propagates to others due to bind mount.

it could potentially break on some random device, custom implementation or use case

I can't think of a practical situation where things may break because of this but to be on safe side is a good thing. However you may consider putting a check so that 3 mounts don't become 9. Though this won't either break anything but output from "mount" command may again perplex someone.

 

[pmj_pedro]

I had no idea that there was so much interest in this. Sorry for ghosting but I didn't receive any notifications from this thread. @agnostic-apollo thanks for creating a Magisk Module, I may want to use in the future on my MediaPad.

 

[Cubuss]

just wanna say thank you guys , after messning around with webdav and smb to mount a network drive with no avail.
i did find the rclone magisk module but unfortunately the vfs-cache-mode wasn'nt working which i did need in my usecase,

Nice thing to have rclone natively on android now with mount working,,

 

[darfri]

just wanna say thank you guys , after messning around with webdav and smb to mount a network drive with no avail.
i did find the rclone magisk module but unfortunately the vfs-cache-mode wasn'nt working which i did need in my usecase,

Nice thing to have rclone natively on android now with mount working,,

Its nice to see someone happy with magisk version as it is very hard to get adequate support for it.
I tried to have mine over sftp and all I had were empty folders from sever, I think it was one level directory depth only also

 

[Cubuss]

Its nice to see someone happy with magisk version as it is very hard to get adequate support for it.
I tried to have mine over sftp and all I had were empty folders from sever, I think it was one level directory depth only also

Like i said at first i was using the magisk module to but it was getting me empty folders when using the vfs-cache-mode parameter ,
Really needed vfs-cache-mode for my use case so i found this thread and im now running rclone directly via termux without magisk,