From: email@example.com (Peter Swain)
Subject: SCO filesystem patches for 1.3.xx kernel
Date: Wed, 02 May 1996 20:58:46 GMT
Organization: iiNet Technologies
Approved: firstname.lastname@example.org (Lars Wirzenius)
Message-ID: < email@example.com>
Summary: sysv filesystem now groks SCO
Keywords: SCO filesystem sysv module
i've patched Bruno Haible's sysv filesystem to handle SCO
sco_fs.lsm entry follows .....
Title: sco_fs: patches to allow read/write of SCO filesystems
Here's few patches to the sysv_fs and genhd.c to allow use on SCO filesystems.
SCO differs from the basic sysv4 filesystem in several areas:
- 'divvy' partitons
SCO has its own unique brand of extended fdisk partition,
- AFS filesystem
like sysv4, but using bitmaps instead of the chained free-list
of blocks (though the inode freelist is unchanged).
- Extended File Names
The sysv (SCO calls it S51K) and AFS filesystems may be
'extended' to handle names up to 255 chars (rather than 14).
These filesystem types are called ES51K and EAFS.
SCO3's default filesystem type is EAFS, but if you convert filesystems
to ES51K, it runs fine (just saying 'Extended File System' instead of
'Extended Fast Filesystem' when it does an fsck).
Don't know about SCO5, i've never met one.
I've addressed these differences as follows:
- CONFIG_SCO_DISKLABEL adds 'divvy' support,
recognising divvy partitions on a sco-formatted drive,
- EAFS & AFS filesystems can be mounted read-only,
- Extended names are handled throughout, so the 14-char limit
disappears, and any long names which appeared fragmented under
the old filesys now join up again.
- EAFS (SCO3 default) filesystems can be converted to ES51K,
and mounted read-write, allowing them to be used by both
SCO and linux.
Using the initrd package, you can even boot both systems
off the one root-filesystem (no, i haven't included an example)
Keywords: SCO filesystem divvy sysv
Author: firstname.lastname@example.org (peter swain)
Maintained-by: email@example.com (peter swain)
Primary-site: ftp.iinet.net.au:/incoming/linux/sco_fs/* (20K)
maybe moving, but i'll keep you informed
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