Hello.

I have Astra Linux installed on Oracle Virtual Box.
Astra is a distributive based on Debian.
I created Shared Folder, the corresponded record is placed in /etc/fstab.

After the guest Linux System started, the SharedFolder is not accessible with rights of user which logged on, it is accessible for root only.
After I do command su, SharedFolder is accessible (for root user). After that I do umount /media/SharedFolderMountPoint and mount -a.
And SharedFolder is accessible for simple users, not for root only.

I don't understand possible reasons. What can I do for SharedFolder was accessible for simple users immediately after system loading?

Sorry my English.

After installing the Guest Additions,


you can use the Shared Folders

Don't Forget to add your user to the virtualbox Groups

to find your actual group name for your virtualbox Group

I want to say its the vboxfs group on the guest OS that you need to enable. On debian, this group gets created with the installation of the guest additions but the user is not generally added to it.

you might find this video useful on setting up guest additions and shared folders in virtual box. I used MX-14 for the video, which is also debian based.

https://www.youtube.com/watch?v=adpalUl4LqI

you Might want to do this too

CLI

in,your,host,not,client,Mine,is,
vboxusers:x:993:userx

but,vboxfs,also,in,fact,in,the,client,that,you,also,ha..e
to,add,user,to,vboxfs,group

Dear BW-userx and dolphin_oracle, thank you very much, problem is solved, shared folders work.
Excuse me for a long pause.
I have some questions:
1. I can ignore command mount on my guest-linux system, folder will be mounted on /media/sf_FolderName, I tried in two guest-system - astra and mint.
2. If command mount works with parameter DeviceName, there are must exist some file /dev/SomeFileOfVirtualBox, and more precisely /dev/FolderName - but I don't found nothing like.

you set up your shared folder in setting for that virtual box when you are setting it up their are check boxes for auto mount, read-only -- this is how you set up your shared folders between your host and client.

if you are talking about they are already mounted but where are they, then easy fine. open up a file manager then look in the address bar.

I know where shared folder is mounted - in /media/sf_Shared. When I set up shared folder settings I wrote shared folder name - 'Shared' but I didn't wrote path '/media/'. Why shared folder is mounted in /media/sf_Shared ?

They have a very convenient little GUI tool. Open up your Main window that stores all of your installs for VBox OS's. then select the one you want to add or change settings to. Then click "settings" Another window opens, in that NEW window select "Shared Folders". If you have one already set to a folder, and it is not working, PROVIDING you have installed "Guest additions" added the user to the group within the client, vboxsf, if the group is not present, then ADD IT.
Then add you user to this new group, log out then log in, to activate it.

Now going back to the setting part of this situation. While in settings, under "Shared Folders" if they are not working then delete them, and start over. Clicking on the folder icon with the + on it. then selecting the "drop down list" select "other". then manually navigate to your folder(s) you want to add. Click on it/them, thus adding the folder(s) to the system settings.

before you close it off in the same window for the folder you have two check boxes to contend to, deal with them accordingly.Because they are self explanatory I will not go into it in this posting. When you have completed this task save your settings.

Now, when you are booting your client watch the messages you should see a line stating that it has auto mounted your shared folder(s).

[misunderstood question, but I'm leaving it because it is good step by step to setting up shared folders]

DO you have a folder on your OS under your user name that actually says "Shared"?

if yes, then why do you think it mounted it if you actually have a folder named that within your user account that is using VBox?


as far as it being mounted in the /media folder that is the default folder where other folders are mounted to. In techy talk, that is the mount point that the system uses by default.

Having bashed my cranium thoroughly against this very issue, not long ago, here is the one thing that I have found works reliably:

(1) In the "shared drives" page of the Virtual Machine definition, specify that the drives are to be "auto-mounted," read-only or read-write as the case may be. Due to various timing problems at VM startup, I found that no other method worked reliably.

(2) Add any user that you want to have access to the drive, to the vboxsf group.

(2a) Don't forget to add the user that the Apache web-worker processes run under! The Apache control process might run as root, and therefore have access, while the slaves that actually serve pages do not.

(3) So far as I know, everything on the shared drive will be writeable regardless of permission masks. The mask is forced to rwxrwx---.

Thank you, BW-userx, I didn't know it, now it's clear for me.

And my second question? :

Or I'm not right and the parameter DeviceName of the command mount is not necessarily a some file in folder /dev/ ?

No you do not need to use that method to mount, this is what the share folder settings are used for, unless you're in your client VBox session and mounting through the usb port if needed due to auto mount not working. Or, if you're in your client and mounting within itself contained system other devices to your system.

but over all NO you do not have to worry about going command line commandO' on any mounting routines to access directories outside of your client, go through your Client settings to preform these duties.

to mount or not to mount:

mounting folders to another folder

source has stuff in it (Data)
destination is empty folder, or not, depending if users wants it mixed into other data or not.
now instead of me having to go through /media/data/Dropbox to get to data inside of Dropbox, all I have to do is go into ~/mountme and everything that is in Dropbox is now in ~/mountme as well. I too could have used a soft link to do the same instead.
who can actually do this? Root can do all things, that is why it is called "god mode".
user can link anything to anything, Mounting is a god only thing.

to discover if it is a /dev/ just blkid or sudo blkid first. if it is not in the list then it is not a /dev mounting operation.


any thing else I can try and clear up for you while I'm still awake?

Thank you very much, BW-userx, it works.
Good slumbers to you .

You're welcome and its not even 12 noon yet here, almost Siesta time I suppose.

Dear rooxt.

Please email me, how you did setup "Shared Folder" in Astra.
If not difficult, then, step-by-step.
I have a same trouble.

Можно по-русски.