问题
I'm sorry to ask this in here, but I tried serverfault and didn't get any answer for 4 days.
The related question there: https://serverfault.com/questions/394197/mount-shared-folder-vbox-as-another-user
Question:
I'm trying to mount my vbox shared folder every time my ubuntu (10.04) starts.
So, I added an entry on /etc/init with this:
description "mount vboxsf Desktop"
start on startup
task
exec mount -t vboxsf Desktop /var/www/shared
Seems to work, except by the fact that all the files are owned by "root", and I don't have permission to write on the folder (neither chmod nor chown seems to be working).
So, how can I make all the files under this shared folder to be owned by www-data user/group?
ps.: The main reason for me to have an automatic shared folder, is so I can create/edit files from the HOST on the GUEST www folder.
If you have a better idea for that, instead of sharing the folder, fell free to say.
回答1:
Well, while I was having another issue related with my shared folder, I ended up getting to this stackoverflow question: Shared folder in VirtualBox for Apache
It helped me in 2 ways, and seems that what I need are those uid and gid options.
So, to mount a shared folder as another user, I would run:
mount -t vboxsf SHARE_NAME /some/dir -o uid=48,gid=48
Also, to see what are your www-data's gid and uid, just run id www-data.
If you also need to change the permissions on the mounted files, just add "dmode" to the options, as:
sudo mount -t vboxsf SHARE_NAME-o rw,dmode=777,gid=GROUP_ID,uid=USER_ID /path/on/guest
The available options are (from mount's help):
rw mount read write (default)
ro mount read only
uid =<arg> default file owner user id
gid =<arg> default file owner group id
ttl =<arg> time to live for dentry
iocharset =<arg> i/o charset (default utf8)
convertcp =<arg> convert share name from given charset to utf8
dmode =<arg> mode of all directories
fmode =<arg> mode of all regular files
umask =<arg> umask of directories and regular files
dmask =<arg> umask of directories
fmask =<arg> umask of regular files
And if you need it to run during the system init, just create a file on /etc/init/SOMETHING.conf, with something like this:
description "SOME DESCRIPTION"
start on startup
task
exec mount -t vboxsf YOUR_SHARE_NAME /path/on/guest -o uid=1000,gid=33
来源：https://stackoverflow.com/questions/10889867/mount-shared-folder-vbox-as-another-user