Pass the length of an structure to the pretty-printer backends as a
size_t instead of an int.


git-svn-id: svn+ssh://svn.freebsd.org/base/head@271487 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
Tweak pipe_truncate() to more closely match pipe_chown() and pipe_chmod()
by checking PIPE_NAMED and using invfo_truncate() for unnamed pipes.


git-svn-id: svn+ssh://svn.freebsd.org/base/head@271488 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f