[ydl-gen] About permissions, etc.

[Bill Fink]

Hi Charles,

You might want to check out the file /etc/security/console.perms.

						-Bill



On Wed, 24 Jan 2007, Charles Trois wrote:

> Hello!
> 
> I am a bit confused about some matters related to permissions.
> Here is a part of my fstab file:
> 
> Sirrah ~ # cat /etc/fstab
> ...
> /dev/hda9   /mnt/giga       hfs       defaults,umask=0          0 0
> /dev/hda10  /mnt/Sigma      hfsplus   defaults                  0 0
> /dev/hda11  /mnt/SigmaX     hfsplus   defaults                  0 0
> ...
> 
> and here are the contents of /mnt:
> 
> Sirrah ~ # ls -l /mnt
> total 8
> drwxr-xr-x 1 root root   28 Dec 21 17:00 Sigma
> drwxrwxr-t 1 root cdrw   38 Jan 21 09:52 SigmaX
> drwx------ 2 root root 4096 Aug 11 01:49 cdrom
> drwx------ 2 root root 4096 Aug 11 01:49 floppy
> drwxrwxrwx 1 root root   40 Dec 21 16:00 giga
> 
> I want to suppress the write permissions on Sigma and SigmaX. So I did
> 
> Sirrah ~ # chmod 555 /mnt/Sigma
> 
> That worked all right, and I went on with
> 
> Sirrah ~ # chmod 555 /mnt/SigmaX
> chmod: changing permissions of `/mnt/SigmaX': Read-only file system
> 
> The error here is surprising, as SigmaX is mounted rw:
> 
> Sirrah ~ # mount
> ...
> /dev/hda11 on /mnt/SigmaX type hfsplus (rw)
> ...
> 
> I tried the step of remounting it rw: the error disappeared, but chmod 
> produced no result.
> SigmaX, strangely, belongs to the cdrw group, and I wondered if that 
> could be the cause of the trouble, so I tried to change it to root; but 
> the answer was again: Read-only file system.
> Finally, I wondered if SigmaX might have the "i" attribute, so I tried:
> 
> Sirrah ~ # lsattr /mnt
> ------------- /mnt/cdrom
> ------------- /mnt/floppy
> lsattr: Inappropriate ioctl for device While reading flags on /mnt/giga
> ------------- /mnt/Sigma
> ------------- /mnt/SigmaX
> 
> It shows no attributes, but there is this error about giga: it is 
> perhaps of no consequence, but it should not be there!
> 
> I'd be grateful for any hints that could help me get out of this mess.
> 
> Charles