From owner-freebsd-current  Wed Nov  1 11:31:17 2000
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Date: Wed, 01 Nov 2000 14:31:10 -0500
From: Marcel Moolenaar <marcel@cup.hp.com>
Organization: Hewlett-Packard
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To: Poul-Henning Kamp <phk@critter.freebsd.dk>
Cc: Andrew Gallatin <gallatin@cs.duke.edu>,
	freebsd-current@freebsd.org
Subject: Re: linux emulation
References: <22109.973104613@critter>
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Poul-Henning Kamp wrote:
> 
> I was just looking at that piece of code, and I couldn't entirely
> make out what it was even trying to do.  Can somebody more
> linuxolator savy explain what the function linux_ustat() should
> produce.

The following comment explains what linux_ustat should do:

	/*
	 * lu.f_fname and lu.f_fpack are not used. They are always zeroed.
	 * lu.f_tinode and lu.f_tfree are set from the device's super block.
	 */

linux_ustat fills in a structure with the above mention fields. The
meaning of f_tinode and f_tfree are explained by the following two
statements:

		lu.f_tfree = stat->f_bfree;
		lu.f_tinode = stat->f_ffree;

In short: given the (u)dev_t, get the FS statistics and return the
number of free blocks and inodes of the FS on that device.

-- 
Marcel Moolenaar
  mail: marcel@cup.hp.com / marcel@FreeBSD.org
  tel:  (408) 447-4222


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