Emulace Linuxu

[Petr Snajdr]

Vladimir Mencl, MK, susSED wrote:

>   Zkousel jsi to nekdy nekde? Ja si z diskuse s Jakubem Jelinkem
> pamatuji, ze pry "to, co FreeBSD pouziva, a cemu rika UFS, je neco uplne
> jineho nez UFS". A kdyz jsem jeden cas mel oba systemy (FreeBSD
> 2.1.0, tedy bez mount_ext2fs), zkousel jsem mount_ufs v Linuxu, a
> neuspel jsem (tenkrat Redhat 4.1).
> 
>                                 Vlada

V Helpu pri kompilaci jadra Linuxu se pravi:

BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD       
and NeXTstep) use a filesystem called UFS. Some System V Unixes can     
create and mount partitions and diskettes using this filesystem         
as well. Enabling this option allows you to mount these partitions      
and diskettes read-only. [...]

na http://www.mathi.uni-heidelberg.de/~flight/projects/u2fs/
se pravi:

ufs for Linux

The name of the game

ufs is a file system widely used in different UN*X like operating 
systems. ufs stands for `user file system' and was developed by UCB. 
Therefore it is most prominent
among operating systems somehow derived from the BSD distribution. 
4.2BSD, 4.3BSD, 4.4BSD, SunOS, NetBSD, FreeBSD, NEXTSTEP and OSF are 
some
examples, the GNU Hurd has also provides an implementation of ufs. 
Related names are ffs (fast file system) and lfs (log file system).

The instances of ufs differ in things like endianess, position of 
superblock etc.

[...]

The future


It seems to be a reasonable goal to merge the best of both 
implementations and come out with a ufs that's able to read all 
instances of ufs filesystems and that works on
architectures supported by Linux. I hope that it's possible to build 
this based on Fare's patched ufs (see above). This version currently 
lacks at least support for FreeBSD and NEXTSTEP file systems.

[...]
        

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   Petr Snajdr