On Mon, 2004-Jul-19 21:29:54 -0700, Tim Kientzle wrote: >I have some ideas about sparse file handling, >but they're not gtar-compatible. (The gtar >approach has a number of drawbacks. The primary >one being that on many systems it requires reading >the entire file twice, once to find holes and again >to actually archive the file. Actually, it's not possible to accurately determine the holes in a file by reading it - you can't differentiate between a hole and a allocated block of zeroes. What you need is a (new) syscall that invokes a new VOP_... and returns a bitmap of allocated blocks. This would be non-trival unfortunately. -- Peter JeremyReceived on Tue Jul 20 2004 - 06:42:37 UTC
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