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    SubjectRe: OT: why no file copy() libc/syscall ??


    Justin Cormack wrote:
    > On Thu, 2003-11-20 at 19:08, Jesse Pollard wrote:

    > If you really want a filesystem that supports efficient copying you
    > probably want it to have the equivalent of COW blocks, so that a copy
    > just sets up a few pointers, and the copy only happens when the original
    > or copied files are changed.
    >
    > But basically you wont get a syscall until you have a filesystem with
    > semantics that only maps onto this sort of operation.


    This could be a problem if COW causes you to run out of space when
    writing to the file.

    This could also be a benefit if, for whatever reason, you have lots of
    copies of the same file that you never change. But that sounds somewhat
    pointless to me.

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