K 10
svn:author
V 3
jhb
K 8
svn:date
V 27
2017-12-19T18:20:38.468780Z
K 7
svn:log
V 515
Add a custom VOP_PATHCONF method for fdescfs.

The method handles NAME_MAX and LINK_MAX explicitly.  For all other
pathconf variables, the method passes the request down to the underlying
file descriptor.  This requires splitting a kern_fpathconf() syscallsubr
routine out of sys_fpathconf().  Also, to avoid lock order reversals with
vnode locks, the fdescfs vnode is unlocked around the call to
kern_fpathconf(), but with the usecount of the vnode bumped.

MFC after:	1 month
Sponsored by:	Chelsio Communications

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