Don't bother calling vslock() and vsunlock() if oldlen is zero.

If vslock() returns ENOMEM, sysctl_wire_old_buffer() should set
wiredlen to zero and return zero (success) so that the handler will
operate according to sysctl(3):
     The size of the buffer is given by the location specified by
     oldlenp before the call, and that location gives the amount
     of data copied after a successful call and after a call that
     returns with the error code ENOMEM.
The handler will return an ENOMEM error because the zero length
buffer will overflow.

0 files changed, 0 insertions, 0 deletions