I believe the reason it is too complex for a system call is generally that filesystems are implemented to the side of the system, so there is a lot involved in moving between filesystems that is beyond the scope of what a base call would handle. Whereas moving within the same filesystem requires very little actual work, so was deemed worthy.

I could of course be totally wrong.

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In reply to Re: symbolic/hard links system calls by suaveant
in thread symbolic/hard links system calls by spx2

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