30 Mar
2005
30 Mar
'05
12:46 a.m.
Just to chime in here... Something I've thought about recently regarding
file systems...
I believe there was going to be an ext2 driver in ReactOS. Am I right in
thinking that complications arise because of the different ways in which
security is implemented for different operating systems? And thus if you
use ext2 from Windows or NTFS from Linux, you essentially have
unrestricted access to all files (non-encrypted, of course.)
One possible solution might be to provide some sort of GROUPS and PASSWD
"emulation" in ReactOS for each user account, so when NTFS is being
used, the NT style security descriptors are used, whereas when ext2 is
used, the Linux style is used. I'm assuming here of course that Linux
uses the group and user IDs for the security info - I could be wrong.
Still fairly new to Linux.
The actual emulation implementation wouldn't be too difficult as it'd
just be a case of storing the Linux GID and UID for a user - something
which should be possible. Maybe the ext2 driver would be responsible for
converting the NT security descriptor into a Linux one? Or maybe a
common module (linuxids.dll or something?) could perform this conversion.
I'm probably dreaming away here as if it was THAT easy, surely it would
have been done already huh?
Robert Köpferl wrote:
I think there are already enough file systems around.
And as one looks
some of them provide also very advanced features. I have an eye on an
JFS implementation for NT - it's just the usual that I dont find either
time or a starting point.
The security in NT comes from the object manager and the processes'
security tokens which are created by the security authority (which is
replacible, see Novel). Thus any FS which allws additional meta info is
suitable for us.
It's a bad idea to reinvent an own NTFS (and even name it so). Confusion
would be great.
Mike Swanson wrote:
NTFS is an important feature of Windows NT, it is
one of the most
advanced file systems devised. It contains many security devices that
makes Windows NT secure. It is much more reliable than FAT.
Perhaps instead of waiting for someone to make complete NTFS support
in ReactOS (not that it shouldn't be done), we may make a filesystem
of our own that is designed with NTFS features in mind
(http://linux-ntfs.sf.net/ntfs/), but since we make it we have
complete support for it. I was thinking of the name MUSCLE, a pun of
FAT. I'm not exactly sure if the letter mean anything yet, but they
could be in the future ;)
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