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Re: BSD device name and its mount point

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Re: BSD device name and its mount point

Subject: Re: BSD device name and its mount point
From: Quinn <email@hidden>
Date: Fri, 16 Nov 2007 14:58:01 +0000

At 18:40 +0400 16/11/07, Boris Remizov wrote:

I have a problem. How can I determine in the kernel mode the line between a name of the BSD device, created by IOMediaBSDClient, and its mount point (e.g. /Volumes/SomeDisk). It's no matter in the link type:

/dev/xxx --> /Volumes/yyy, or


You should be able to go this way using vfs_iterate.

/Volumes/xxx --> /dev/yyy.


You should be able to go this way using vfs_getvfs_by_mntonname.

For a given mount_t, you can get the dev node on which it's mounted by calling vfs_statfs and looking in f_mntfromname.

This assumes the volume is local (MNT_LOCAL). For non-local volumes, f_mntfromname is pretty much meaningless, and you probably don't have a IOMedia node anyway.

S+E
--
Quinn "The Eskimo!"                    <http://www.apple.com/developer/>
Apple Developer Relations, Developer Technical Support, Core OS/Hardware
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  >BSD device name and its mount point (From: Boris Remizov <email@hidden>)




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