working with vn_fullpath

[Andrew Sporner <asporner@xxxxxxxxx>]

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?

Here is an example of what failed for me:

(part of kern_unlink in vfs_syscalls.c ---not complete---)

. ...

VOP_LEASE(vp, td, p->p_ucred, LEASE_WRITE);

vn_lock(vp, NULL, LK_EXCLUSIVE | LK_RETRY, td);

if (vn_fullpath(td->td_proc, vp, &fullpath, &freepath) == 0) {
	printf ("got path %s\n", fullpath);
}

free(freepath, M_TEMP);

,,,,,

Any hints would be appreciated!

Many thanks in advance


Andy



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