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Re: grub-probe && statfs(2)

From: Yoshinori K. Okuji
Subject: Re: grub-probe && statfs(2)
Date: Sun, 30 Dec 2007 13:38:46 +0100
User-agent: KMail/1.9.4


On Saturday 29 December 2007 13:36, Francis Gendreau wrote:
> My recommendation would be relatively simple. grub_guess_root_device()
> could simply call statfs() and extract the device name from struct
> statfs f_mntfromname, maybe as simply as the following, but I may lack
> of knowledge about some technologies on which this might not work (like
> RAID ...).

Unfortunately, statfs in Linux does not return a filename. From statfs(2):

       The Linux statfs was inspired by the 4.4BSD one (but they  do  not  use
       the same structure).

In fact, struct statfs does not contain f_mntfromname or anything equivallent 
on Linux.

So I think it would be necessary to use statfs, only on *BSD (or if struct 
statfs contains f_mntfromname).


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