Introduction to Advanced Server for UNIX
Shared resources
Product Manual
U7613-J-Z815-6-76
©
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02
The attributes
r
and
d
are mapped to the relating UNIX mechanisms. The attributes
a, s
and
h
, as well as any possible combination of these are translated to Advanced Server for UNIX
by means of UNIX group names. The table below, for example, shows how the MS-DOS
file
BSP.DAT
with the attributes
a
and
h
and the MS-DOS file
READONLY.BSP
with the attri-
butes
a, r
and
h
are mapped under UNIX:
OS/2
The extended file attributes of the HPFS (OS/2 extended attributes) contain additional infor-
mation on OS/2 files such as long filenames or comments, for example. The UNIX file
system does not support all attributes, so Advanced Server for UNIX creates a hidden
shadow file for each file with extended attributes. This shadow file has the default name
.EA@<filename>
. For example:
The
autoexec.bat
file has a shadow file with the name
.
The period (.) as the first character in the filename hides the file under UNIX. The
hidden files are not displayed with the
ls
command. To do this, use the
ls -a
command.
You must try to ensure that these files are only handled under OS/2. If you delete or copy
the files under UNIX, you should also delete or copy the shadow file accordingly.
It is not possible to copy these files with their attributes from an Intel-based to a
RISC-based UNIX system using UNIX commands, as the internal formats do not
match. When the server system is changed, copy the files from the first server to an
OS/2 PC first and from this PC to the other server.
The shadow files of LAN Manager/X 2.2 are compatible with those of Advanced Server for
UNIX and can be continued to be used unchanged.
You should also be aware that with the current version of Advanced Server for UNIX, files
with extended attributes cannot be transferred via the replicator service and also cannot be
copied locally, for example, with
lmshell
.
The default value of the
EAFilePrefix
registry parameter has changed since Version 4.0A10
of Advanced Server for UNIX. Instead of
.ea@
, the value
.EA@
is now used to ensure
compatibility with Advanced Server for UNIX V3.5.
Permissions
Owner
Group
Filename
rw-rwsr--
lmxadmin
DOS-a-h
bsp.dat
r--r-sr--
lmxadmin
DOS-a-h
readonly.bsp
i
!
