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1991-02-15
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TECHNICAL BULLETIN
Bulletin 1-255
October 26, 1989
BINDFIX Aberration
When BINDFIX.EXE is executed under the following conditions, data loss
will occur:
o The NetWare operating system is version 2.15 or below.
o The NetWare shell being used on the workstation where
BINDFIX.EXE is being executed is a NetWare 386 shell,
version 3.0.
o The NetWare 386 v3.0 shell is using the "SHOW DOTS ON"
parameter. The default for this parameter is ON.
o A user has been deleted from the bindery without the
corresponding mail directory being deleted. This occurs when
the SYSCON utility being used was an earlier version shipped
with NetWare v2.11 or below and the shell being used is a
NetWare 386 version 3.0 shell.
o The BINDFIX user answers "Yes" to the question, "Delete mail
directories of users that no longer exist?"
NOTE: Data loss will occur only when all the above conditions are met.
The Cause
The early versions of SYSCON.EXE were not prepared to deal with
the directory entry '.' (from the SHELL.CFG parameter "SHOW
DOTS = ON"). This resulted in the user mail directory not being
properly deleted.
BINDFIX.EXE, similarly, is unable to deal with the '.' directory
entry. When it attempts to delete mail directories of nonexistent
users, it will get caught in a loop of deleting files and
directories.
Preventive Measures
o We recommend that NetWare users use the 3.0 shell only with
NetWare 386 file servers and with NetWare 386 utilities.
o In an internetwork environment where it may be necessary to
use the 3.0 shell with 2.1x file servers, place the command
"SHOW DOTS = OFF" in the SHELL.CFG file.
o Users of some applications need the "SHOW DOTS = ON" parameter
set. Make sure that they have insufficient rights to run
BINDFIX.EXE.
o Make sure that there are no versions of SYSCON.EXE on your
internetwork that are earlier than NetWare version 2.12.
o Maintain current backups.