Date: Thu, 17 Nov 2011 12:55:02 -0500 From: "Dieter BSD" <dieterbsd@engineer.com> To: freebsd-hackers@freebsd.org Subject: Re: easy way to determine if a stream or fd is seekable Message-ID: <20111117175514.274040@gmx.com>
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> lseek() on a tape drive does not return an error, nor does it > actually do anything. IIRC some tape drives can seek, while others cannot. Vague memories that it is supposed to be possible to put a filesystem on a DECtape and mount the filesystem. It might be that FreeBSD doesn't currently support seeking on a tape, but we shouldn't paint ourselves into a corner by assuming that it is fundimentally impossible.
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