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Update entry "How do anti-virus programs like Cygwin?", 

adding bit about performance hit and exempting C:\cygwin\bin from scanning.
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David Starks-Browning 2000-10-18 14:36:07 +00:00
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@ -346,16 +346,24 @@ things you might add in the future?)
@subsection How do anti-virus programs like Cygwin?
Users have reported that McAfee (now NAI) VirusScan for NT (and others?) is
incompatible with Cygwin. This is because it tries to scan the
newly loaded shared memory in the cygwin.dll, which can cause fork()s
to fail, wreaking havoc on many of the tools.
Users have reported that NAI (formerly McAfee) VirusScan for NT (and
others?) is incompatible with Cygwin. This is because it tries to scan
the newly loaded shared memory in cygwin1.dll, which can cause fork() to
fail, wreaking havoc on many of the tools. (It is not confirmed that
this is still a problem, however.)
There are also reports of NAI VirusScan causing the system to hang when
unpacking tar.gz archives. This is surely a bug in VirusScan, and
should be reported to NAI. The only workaround is to disable VirusScan
when accessing these files. This can be an issue during setup, and is
discussed in that FAQ entry.
There have been several reports of NAI VirusScan causing the system to
hang when unpacking tar.gz archives. This is surely a bug in VirusScan,
and should be reported to NAI. The only workaround is to disable
VirusScan when accessing these files. This can be an issue during
setup, and is discussed in that FAQ entry.
Some users report a significant performance hit using Cygwin when their
anti-virus software is enabled. Rather than disable the anti-virus
software completely, it may be possible to specify directories whose
contents are exempt from scanning. In a default installation, this
would be @samp{@code{C:\cygwin\bin}}. Obviously, this could be
exploited by a hostile non-Cygwin program, so do this at your own risk.
@subsection Why can't I run bash as a shell under NT Emacs?