Wireshark-bugs: [Wireshark-bugs] [Bug 580] Error "Arg list too long" when saving trace file > 2GB

From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Wed, 3 Oct 2007 00:46:26 +0000 (GMT)

http://bugs.wireshark.org/bugzilla/show_bug.cgi?id=580





------- Comment #13 from guy@xxxxxxxxxxxx  2007-10-03 00:46 GMT -------
sgzip's sgzlib.c says

   sgzip files are files based on the gzip compression
   library which are also quickly seekable and therefore may be used
   for applications where seeking is important.

and sgzlib.h says

   The sgzip file format basically relies on breaking the file into
   blocks, each of these blocks is compressed seperately (which
   results in a slight decrease of compression for small blocks). The
   file then stores these blocks in the compressed file. Just before
   each compressed block, an offset is stored to the next block in the
   file.

I.e., it is *NOT* a library that provides random access to gzipped files, it's
a library that defines its own file format, designed to better support random
access than gzip format does.  That might be useful - although bzip2 format
*also* should support random access, and is, I suspect, more commonly used -
but it doesn't provide a way to do efficient random access to .gz files.


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