MFC r318588:

Fix up two assertions following malloc(). vangyzen@ notified me of
the second one. The first one is fixed as well.

Reported by: vangyzen@

MFC r318578:

Fix non-recoverable name resolution failures due to negative cache
entries never expiring. This patch honours the negative cache timeout.

To test/experience the failure do the following:

1. Edit /etc/ncd.conf to adjust the cache timeouts as follows:

positive-time-to-live hosts 30
negative-time-to-live hosts 1

2. Ensure that nsswitch.conf hosts line contains something like:

hosts: files cache dns

Note that cache must be specified before dns.

3. Start nscd.

4. Run the following command:

while true; do nc -z -w 3 www.google.com 80; sleep 5; done

5. While running the command, remove or comment out all nameserver
statements in /etc/resolv.conf. After a short while you will notice
non-recoverable name rsolution failures.

6. Uncomment or replace all nameserver statements back into
/etc/resolv.conf. Take note that name resolution never recovers.
To recover nscd must be restarted. This patch fixes this.

PR: 207804
Submitted by: Jov <amutu@amutu.com>

MFC 272668:
Properly set the timeout in a query_state. The global query_timeout
configuration value is an integer count of seconds, it is not a timeval.
Using memcpy() to copy a timeval from it put garbage into the tv_usec
field.

PR: 194025

MFC 272668:
Properly set the timeout in a query_state. The global query_timeout
configuration value is an integer count of seconds, it is not a timeval.
Using memcpy() to copy a timeval from it put garbage into the tv_usec
field.

PR: 194025