looping over the addresses returned by the dns lookup, as each address
is one new peer.
however, if the lookup fails with a temporary error, we will try to lookup
later again. for that, we obviously need to insert one peer with the
hostname in addr_head... change one for() loop into a do { } while() one
FreeBSD's example, a '~' in an environment variable is replaced
with the user's homedir. A '$' is replaced by the user's login
name. Both can be escaped with a backslash to get the literal char.
OK deraadt@
interfaced with the MI scsi code.
Adapted from NetBSD with some changes (especially to get tape and old
cd-rom drives to not cause the driver to spin during probe).
Tested by millert@ and I, ok millert@
using mmap(2) instead of sbrk(2).
To make a long story short, using mmap(2) in malloc(3) allows us to draw
all the benefits from our mmap(2)'s randomization feature, closing the
effort we did for returning memory blocks from random addresses.
Tested for a long time by many, thanks to them.
Go for it ! deraadt@
to resolve the hostname every 60 seconds
fixes ntpd invocations before e. g. a dialup link is established and such.
as we want ntpd to be a "fire and forget" background daemon it should
cope with such situations.
tested by many
which, besides the head pointer for the list of course, stores the original
address as specified (i. e. as hostname instead of resolved IPs) and flags
and such.
1) base the interval calculation on the offset from the last reply, not
from the last peer update.
Allows us to send more queries again faster when the local clock
diverges too much
2) every time we form a peer update (for which we need 8 replies)
check wether we have a ready peer update for all peers that are
currently trusted, and if so, calculate the total offset and call
adjtime().
that means that adjtime is no longer called in fixed intervals
but whenever we have enough data to reliably calculate the local
clock offset.
In practice, that means we call adjtime() less often, but with
probably better data.
3) invalidate peer updates after beeing used. no point in re-using them
- this resulted in calling adjtime() multiple times with the same
offset, which doesn't make sense
tested by many
tdeval