NTFS-3g only mountable as root

[SirEdgar2nd]

So, I installed fuse and ntfs3g, I can run it just fine as root. Issue is when that I can't mount it as a normal user either in the terminal or in dolphin.

And I noticed during compile I got this

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***************************************************************************
* WARNING  WARNING  WARNING  WARNING  WARNING  WARNING  WARNING  WARNING   *
* The FUSE user space binaries were NOT installed with root directory *
* executable prefix. This means that automounting NTFS volumes during boot *
* could fail. This can be fixed the below way by reinstalling FUSE using *
* the right 'configure' option during FUSE compilation: *
*       ./configure --exec-prefix=/ *
*       make && sudo make install *
* WARNING  WARNING  WARNING  WARNING  WARNING  WARNING  WARNING  WARNING *
****************************************************************************

o-o I should also note kdesu allows me to mount it just fine (in dolphin which makes since that that runs dolphin with root privileges).

Here is my /etc/fstab

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/dev/sda1               /mnt/windows    ntfs-3g         noauto,users            0 0

I also tried 'user' instead of users but that didn't work so I changed it back

[Amity88]

did you emerge ntfs3g using suid flag?

[SirEdgar2nd]

did you emerge ntfs3g using suid flag?

huh? I don't get that? o_o;;

[ssteinberg]

$ emerge -pv ntfs3g

These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild R ] sys-fs/ntfs3g-2010.3.6 USE="acl external-fuse udev -debug -hal -suid" 818 kB

Total: 1 package (1 reinstall), Size of downloads: 818 kB

[SirEdgar2nd]

$ emerge -pv ntfs3g

These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild R ] sys-fs/ntfs3g-2010.3.6 USE="acl external-fuse udev -debug -hal -suid" 818 kB

Total: 1 package (1 reinstall), Size of downloads: 818 kB

*facepalms* OH... wow >.<;; Now I feel slow. XD


Well, I just recompiled with suid support, just not exactly sure what that was meant to accomplish? Yeah there was no suid when I first used it though.

[Amity88]

suid lets normal users mount partitions using ntfs-3g

[SirEdgar2nd]

Ah, well I tried mounting it as a normal user again but it still doesn't work, in face I Tried it twice.


First with External Fuse support

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Mount is denied because setuid and setgid root ntfs-3g is insecure with the
external FUSE library. Either remove the setuid/setgid bit from the binary
or rebuild NTFS-3G with integrated FUSE support and make it setuid root.
Please see more information at http://ntfs-3g.org/support.html#unprivileged

Then without

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Error opening '/dev/sda1': Permission denied
Failed to mount '/dev/sda1': Permission denied
Please check '/dev/sda1' and the ntfs-3g binary permissions,
and the mounting user ID. More explanation is provided at
http://ntfs-3g.org/support.html#unprivileged

And I did just set up suid too :/ or use the flag unless I was supposed to do something else with suid...

[ssteinberg]

Did you read http://www.tuxera.com/community/ntfs-3g ... privileged?

[Amity88]

@SirEdgar2nd, ok. Run this :

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echo sys-fs/ntfs3g suid -external-fuse >> /etc/portage/package.use
emerge ntfs3g

now you will be able to mount using ntfs-3g to a directory where the user has write permissions in.

[SirEdgar2nd]

Did you read http://www.tuxera.com/community/ntfs-3g ... privileged?

After reading it, I don't fully comprehend it... O_o

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   1. ntfs-3g is compiled with integrated FUSE support  
   2. the ntfs-3g binary is at least version 1.2506 
   3. the ntfs-3g binary is set to setuid-root 
   4. the user has access right to the volume 
   5. the user has access right to the mount point 

1.) I understood this, which is why I disabled external fuse use flag
2. ) Obviously, I have the latest Which is way above 1.2506
3.) I didn't quite get this?
4.) So, I need access to the directory?
5.) Huh, I thought this was related to 4 but I wasn't sure...

Then I read the rest of it and

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Please note that using setuid-root can result unforeseen privilege escalation and its usage is discouraged. Only the absolutely trusted users must be granted such access.

SO not only do I not grasp things like this too well, there is that too. Well, not too much of a problem since I am the only user but I occasionally make a new user account on my system whenever someone stays in the house temporarily. So yeah. :/

@SirEdgar2nd, ok. Run this :

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echo sys-fs/ntfs3g suid -external-fuse >> /etc/portage/package.use
emerge ntfs3g

now you will be able to mount using ntfs-3g to a directory where the user has write permissions in.

But I already disabled external-fuse? o_O;; ALthough lemme check if I can do so if I have write permission in a folder.

Edit:

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edgar@localhost ~ $ ntfs-3g /dev/sda1 /home/edgar/windows
Error opening '/dev/sda1': Permission denied
Failed to mount '/dev/sda1': Permission denied
Please check '/dev/sda1' and the ntfs-3g binary permissions,
and the mounting user ID. More explanation is provided at
http://ntfs-3g.org/support.html#unprivileged

That didn't work out lol...

[Amity88]

I use the default settings with ntfs-3g myself. I use a normal user account, and whenever I need to read/write to a ntfs partition, I access the root terminal and mount it. It may sound weird that you are restricting yourself in your own computer, feels that way after using the 'default' administrator account that windows gives. It just means that if something goes rogue, the damage will be confined to ONLY what the user has access to, this is one of the reasons why you shouldn't run as root.

I hope the problem is all solved now Also, most of the basic stuff are well documented, Google is your friend

[Amity88]

try this(from root) :

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mkdir /mnt/windows
chown edgar:edgar /mnt/windows

try mounting it to /mnt/windows now

[SirEdgar2nd]

Well, that didn't quite work out either, I get the same results as if I mounted it on my home directory. XD

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edgar@localhost ~ $ ntfs-3g /dev/sda1 /mnt/windows
Error opening '/dev/sda1': Permission denied
Failed to mount '/dev/sda1': Permission denied
Please check '/dev/sda1' and the ntfs-3g binary permissions,
and the mounting user ID. More explanation is provided at
http://ntfs-3g.org/support.html#unprivileged

I guess I should just mount it the more 'restrictive' root way then. o_O;; Its a little annoying but it can be done. I also decided to change that directories ownership back to root:root but if I get any more piece of advice on how to set it up to work on normal users I'll gladly try it. lol

[Amity88]

what groups are the user in? I think edgar doesn't have permissions to access /dev/sda1.

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groups edgar

[SirEdgar2nd]

what groups are the user in? I think edgar doesn't have permissions to access /dev/sda1.

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groups edgar

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localhost edgar # groups edgar
wheel floppy audio cdrom video usb users plugdev games edgar

[Amity88]

ok, add edgar to the disk group.

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gpasswd -a edgar disk

[SirEdgar2nd]

ok, add edgar to the disk group.

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gpasswd -a edgar disk

Thank you, its actually doable now.

[Amity88]

glad to help