Siemens V4.0 manual Permissions Owner Group Filename, OS/2

Introduction to Advanced Server for UNIXShared resources

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:

Permissions	Owner	Group	Filename
rw-rwsr--	lmxadmin	DOS-a-h	bsp.dat
r--r-sr--	lmxadmin	DOS-a-h	readonly.bsp

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 .EA@autoexec.bat.

i

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 -acommand.

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.

Product Manual U7613-J-Z815-6-76