I've known about this problem for about a week now or so, but been rather busy, so I haven't had time to report it.
Basically, as we all know, Windows memory management is rather shoddy,
and under Cygwin, mmap doesn't work properly during the configure
test. As such, the build has HAVE_MMAP undefined. Thats fine, except
that with HAVE_MMAP undefined, libclamav/scanners.c refuses to build
due to MAP_FAILED being undefined.
I checked the section of code where its failing, and discovered that
the following section is the cause:
/* TODO: do file operations if mmap fails */
if(membuff == MAP_FAILED) {
cli_dbgmsg("mmap failed\n");
return CL_EMEM;
}
I'm not sure if this is the best fix for the problem, but I adjusted
where that code block is and moved it up above:
#else /* FIXME */
return CL_CLEAN;
#endif
so its within the "#ifdef HAVE_MMAP" condition. When moved,
scanners.c compiles correctly.
Like I said, I'm not sure if this is the best fix to the problem, but
I'm including a patch anyway. I know the mmap issue is a Cygwin
problem, and I'm going to pose the question to them next about the
error its having.
I'll be uploading ClamAV For Windows 0.74-6 in about an hour which
includes this fix (since I've been using it all day here with no
problems).
--
Brian Bruns
The Summit Open Source Development Group
Open Solutions For A Closed World / Anti-Spam Resources
http://www.sosdg.org
The Abusive Hosts Blocking List
http://www.ahbl.org
clamav-scanners-mmap.patch
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