I understand similar questions have been asked but truthfully none answer my question.

I downloaded a file using a torrent, and basically I need to replace a .jar file in there with another, yet NOTHING I do will give me permission to do so!

~/virtual-drives/1/java/jar$ rm install.jar
rm: cannot remove ‘install.jar’: Function not implemented

so when I go through sudo:

~/virtual-drives/1/java/jar$ sudo rm install.jar
rm: cannot remove ‘install.jar’: Permission denied

and as root:

 /home/joshuajoseph/virtual-drives/1/java/jar# rm install.jar
 rm: cannot remove ‘install.jar’: Permission denied

can't even change permissions:

/home/joshuajoseph/virtual-drives/1/java/jar# chmod 777 /home/joshuajoseph/virtual-drives/1/java/jar/
chmod: cannot access ‘/home/joshuajoseph/virtual-drives/1/java/jar/’: Permission denied

I can't even do it when I go manually through the archive manager, that still doesn't allow me to delete it.

so as you see, NOTHING I do is working. Can anyone offer a suggestion? I welcome them all!

  • 1
    Look at this: (unix.stackexchange.com/a/7468) According to this, file is part of folder, so you also must check if you have permissions for that folder, including group permission. – Sergiy Kolodyazhnyy Sep 20 '14 at 8:44
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    @Xieerqi root always has permissions. Joshua, this virtual drive, is it a separate partition? Is it mounted read-only? – muru Sep 20 '14 at 9:44
  • @muru It is mounted but this seems to suggest it is read-write: fuseiso on /home/joshuajoseph/virtual-drives/1 type fuse.fuseiso (rw,nosuid,nodev,user=joshuajoseph) yeah I understand root should be able to do all, perhaps I'm not entering the right commands? – Joshua D'Agostino Sep 21 '14 at 16:01
  • @muru Also I thought I'd show this, when I ls -l in the virtual drives directory, I see 7 directories there. Only directory 1 is mounted right now, and when I'm root attempting to change permissions, this is what I see. The remaining 3 - 7 look the same as number 2: d????????? ? ? ? ? ? 1 | drwxrwxrwx 2 joshuajoseph joshuajoseph 4096 Sep 21 01:12 2 – Joshua D'Agostino Sep 21 '14 at 16:01
  • @muru sorry for the amount of comments, just trying to give as much info as possible. When I'm in virtual drive 1, the mounted one, and I ls inside there as root, here's what I get: root@joshuajoseph-HP-Compaq-6710b:/home/joshuajoseph/virtual-drives/1# ls ls: cannot open directory .: Permission denied See what I mean? As root I'm not allowed any permissions? What's going on here? – Joshua D'Agostino Sep 21 '14 at 16:06

You're using fuse to mount the images. From man mount.fuse (section on SECURITY):

3. No other user (including root) can access the contents of the mounted filesystem.

Even though the mount options say rw, I think you cannot use it to modify ISOs. You'll have to use other tools like isomaster for that.

  • Ah alright I see, is there a way around this then? – Joshua D'Agostino Sep 21 '14 at 16:49
  • 1
    @JoshuaD'Agostino even though it says its mounted rw, I don't think you can delete/modify files in ISOs via fuse. I think you should look at some iso editing tool. – muru Sep 21 '14 at 16:52
  • Cheers, used ISO Master. Works a charm. Thanks for your help! – Joshua D'Agostino Sep 21 '14 at 17:38

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