Messages in this thread | | | Subject | Re: Is there a "make hole" (truncate in middle) syscall? | From | Anton Altaparmakov <> | Date | Fri, 05 Dec 2003 14:27:16 +0000 |
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On Fri, 2003-12-05 at 11:44, viro@parcelfarce.linux.theplanet.co.uk wrote: > On Fri, Dec 05, 2003 at 11:22:01AM +0000, Anton Altaparmakov wrote: > > On Thu, 4 Dec 2003, Andy Isaacson wrote: > > > On Thu, Dec 04, 2003 at 02:32:23PM -0600, Rob Landley wrote: > > > I'm curious -- does NTFS implement sparse files? Does the Win32 API > > > provide any way to manipulate them? Does the NT kernel have any sparse > > > file handling? > > > > Yes it does. The new NTFS Linux driver has full support for sparse files > > as does Windows of course. > > > > Windows does provide a function which is just "make hole". It takes > > starting offset and length (or was it ending offset instead of length, > > can't remember) and makes this sparse (obviously aligning to cluster > > boundaries, etc). > > Have fun getting it to play nice with mmap()...
I have no intention to provide such "make hole" functionality in the Linux kernel NTFS driver so I don't need to... (-;
Cheers,
Anton -- Anton Altaparmakov <aia21 at cam.ac.uk> (replace at with @) Unix Support, Computing Service, University of Cambridge, CB2 3QH, UK Linux NTFS maintainer / IRC: #ntfs on irc.freenode.net WWW: http://linux-ntfs.sf.net/ & http://www-stu.christs.cam.ac.uk/~aia21/
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