DragonFly BSD
DragonFly kernel List (threaded) for 2004-06
[Date Prev][Date Next]  [Thread Prev][Thread Next]  [Date Index][Thread Index]

Re: working with vn_fullpath


To: Andrew Sporner <asporner@xxxxxxxxx>
From: Hiten Pandya <hmp@xxxxxxxxxxxxx>
Date: Sun, 27 Jun 2004 21:20:20 +0100

Andrew Sporner wrote:

Hi,

I am porting my VFS filesystem event stuff to dragonfly
and getting rid of some old workarounds.

I need to convert a vnode to it's pathname and I thought
logically that vn_fullpath() would be the right solution.

Unfortunately it fails with ENOENT.

Are there any specific rules to using this function?

When I restructured it from textvp_fullpath to vn_fullpath(), I also added a manual page to how vn_fullpath is supposed to function.

	Also, look at sys/kern/imgact_resident.c for more information
	on how this function is used, the procfs and linprocfs code
	too, which resides in sys/vfs/procfs and
	sys/emulation/linux/i386

	Basically, the one rule to keep in mind is that the vn_fullpath
	can only construct a pathname if *all* its namecache components
	are available, otherwise it returns ENOENT, naturally meaning
	it can't find one of the components.

Here is a link to the web manual page:

http://leaf.dragonflybsd.org/cgi/web-man?vn_fullpath+9

	Hope that answers your queries; otherwise, please do not
	hesitate to ask more questions if any! :-)

		-Hiten
		hmp@xxxxxxxxxxxxx



[Date Prev][Date Next]  [Thread Prev][Thread Next]  [Date Index][Thread Index]