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
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