src/usr.sbin/ppp/timer.c, branch stable/8

Fix a race that can stall the timer when we remove a timer that has another

2009-05-26T07:32:08+00:00

timer with a <0.05 second delta next to it.

This is done by avoiding the possibility of updating the first residual
time delta in the timer list to zero.

PR:		102747
Submitted by:	Sergey Zaharchenko - doublef-ctm at yandex dot ru
MFC after:	3 weeks

Include the correct file (stdarg.h) and use va_list rather than _BSD_VA_LIST_

2002-08-27T20:11:58+00:00

Suggested by: mike

Remove whitespace at the end of lines.

2002-06-15T08:03:30+00:00

Add some missing #includes that weren't required due to namespace polution

2002-05-22T21:08:58+00:00

in our headers.

Submitted by: bde

Fix an include for NetBSD

2002-05-14T17:50:25+00:00

o Clean up some #includes

2002-05-14T12:55:39+00:00

o Bump version number to 3.0.4
o When talking to a RADIUS server, provide a NAS-Port-Type.

  When the NAS-Port-Type is Ethernet, provide a NAS-Port value equal
  to the SESSIONID from the environment in direct mode or the
  NGM_PPPOE_SESSIONID message in other modes.  If no SESSIONID is found,
  default to the interface index in client mode or zero in server mode.

  When the NAS-Port-Type is ISDN, set the NAS-Port to the minor number
  of the physical device (ie, the N in /dev/i4brbchN).

  This makes it easier for the RADIUS server to identify the client
  WRT accounting data etc.

Prompted by:	lsz8425

sigpause() -> sigsuspend()

2001-09-13T10:03:30+00:00

sigblock() -> sigprocmask()

Convert IIJ copyrights to BSD copyrights.

2001-06-13T21:52:19+00:00

Approved by: Toshiharu OHNO

When adjusting timer::rest, round to the closest TICKUNIT usecs

2000-03-14T01:46:34+00:00

value.

This has minimal impact here, but if ppp ever needs to frequently
remove timers before they've timed out, it can badly skew the next
item in the timer list without this change.

The correct fix would be to store usecs in `rest' rather than
TICKUNITs, but the math is easier if we just round...

When we stop a timer that's the first in the timer list, ensure

2000-03-14T01:46:31+00:00

that we adjust that timers `rest' value (with the current getitimer()
values) before using that to adjust the next items `rest' value.
After adjusting that value, restart the timer service so that we've
now got the correct setitimer() values.