src/sys/kern/subr_param.c, branch release/4.6.2

MFC rev 1.53:

2002-03-09T21:05:47+00:00

  Unconditionally limit maxproc so that it is not possible
  to exhaust all kmaps.  The only reward for setting maxproc
  to a value which will cause kmap exhaustion is a panic
  during a forkbomb attack.

MFC 1.52. maxusers could be set to 0 in the kernel config. Also allow it

2002-02-12T20:13:38+00:00

to be set to zero in the kern.maxusers boot tunable.

MFC 1.51 - be somewhat more conservative when calculating the 'maxusers 0'

2002-01-25T18:19:54+00:00

autosize.

Approved by:	re

MFC rev 1.50.

2001-12-19T18:13:02+00:00

With the usage of a newer config forced, we no longer need
to specialcase maxusers == 8 when we're really looking for 0.

MFC rev 1.48 - Set more restrictive limits on maxprocperuid

2001-12-17T22:57:12+00:00

and maxfilesperproc.

MFC 1.49. Too many people are compiling kernels with maxusers set to 0

2001-12-14T04:02:57+00:00

using the old config program.  Hack the kernel to deal with it.

MFC the maxusers = 0 autosizing code.

2001-12-13T19:18:01+00:00

Mike Silbersack is working on a more sophisticated version of this patch
but exams will prevent him from completing it prior to the 4.5 freeze, so
we decided to throw this code into 4.5 and Mike will revisit the issue
post-4.5.

MFC:

2001-11-03T01:41:10+00:00

- Make MAXTSIZ, DFLDSIZ, MAXDSIZ, DFLSSIZ, MAXSSIZ, SGROWSIZ loader
  tunable.
- Change TUNABLE_*_FETCH to have a return value of 0 if the variable
  was not found or successfully converted and true otherwise.
- Use vm_offset_t instead of caddr_t to fix a warning and remove
  two casts in kern_exec.c.

MFC VM_SWZONE_SIZE_MAX and VM_BCACHE_SIZE_MAX features for i386. Other

2001-09-15T00:50:36+00:00

architectures coming soon.  -current has a more complete implementation.

MFC: tunable update. Do MAXUSERS derived tuning at boot time, with

2001-07-30T23:28:01+00:00

overrides.  Allow hz to be tunable.  Stop copying param.c to compiledir.