I quote from the mmap(2) man page:

  MAP_ANON    Map anonymous memory not associated with any specific file.
	      The file descriptor used for creating MAP_ANON regions is
	      used only for naming, and may be specified as -1 if no name
	      is associated with the region.

Inspection of the mmap code reveals that if you pass a closed file
descriptor other than -1, it returns EBADF.

So, how do you create a file descriptor suitable for use with
MAP_ANON?  Also, does this all work properly?

	Mark
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Email: Mark_Weaver@brown.edu           | Brown University
PGP Key: finger mhw@cs.brown.edu       | Dept of Computer Science

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