Date: Thu, 20 May 1999 09:16:24 -0600 (MDT) From: "Kenneth D. Merry" <ken@plutotech.com> To: matt.hamilton@acm.org Cc: freebsd-current@FreeBSD.ORG Subject: Re: mmap() on raw devices Message-ID: <199905201516.JAA56044@panzer.plutotech.com> In-Reply-To: <Pine.BSF.3.96.990520102940.10148C-100000@blue.bad.bris.ac.uk> from Matt Hamilton at "May 20, 1999 10:32:11 am"
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Matt Hamilton wrote... > Dear All, > > I am trying to mmap a raw device (/dev/rda0) yet mmap() keeps returning > EINVAL. From what I have read on the list archives, mmap() should be able > to map a character device (just not a block device), am I missing > something here? > > I have tried this on 3.1-STABLE and 4.0-CURRENT, but no luck. You'll only be able to mmap a device node if it supports mmaping. The da(4) driver, like the sd(4) driver before it, doesn't support mmapping. Ken -- Kenneth Merry ken@plutotech.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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