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Author SHA1 Message Date
Peter Wemm
88d1b64235 Fix a nasty bug that causes random crashes and lockups particularly on 
very busy servers (eg: news, web).  This is an interaction between
embryonic processes that have not yet finished forking, and happen to
cause the kernel VM space to grow, hitting the uninitialised variable.

It was possible for this to strike at any time, depending on the size of
your kernel and load patterns.  One machine had paniced occasionally
when cron launches a job since before the 2.1 release.

If you had "options DIAGNOSTIC", you may have seen references to bogus
addresses like 0xdeadc142 and the like.

This is a minimal change to fix the problem, it will probably be done
better by reordering p_vmspace to be in the startzero section, but it
becomes harder to validate then.

It's been vulnerable since pmap.c rev 1.40 (Jan 9, 1995), so it's been a
cause of problems since well before 2.0.5.  This was when the merged
VM/buffer cache and the dynamic growing kernel VM space were first
committed.  This probably fixes a few of PR's.
 1996-05-02 11:38:05 +00:00
Poul-Henning Kamp
f8845af0db First pass at cleaning up macros relating to pages, clusters and all that. 1996-05-02 10:43:17 +00:00
Poul-Henning Kamp
f3e002a838 Rename the very bogus indeed option "LINUX" to "COMPAT_LINUX". 
I can only presume that the brain behind this have never seen code
that says "#ifdef LINUX" :-(
 1996-05-02 10:41:18 +00:00
Jordan K. Hubbard
6ff0b3b86b Clear the TCP/IP device configuration screen away after we invoke it. 1996-05-02 10:09:45 +00:00
Poul-Henning Kamp
1fa6b8217d NBPG -> PAGE_SIZE 
Avoid using the struct pte stuff.
 1996-05-02 09:42:45 +00:00
Poul-Henning Kamp
a8c5fef5e6 KGDB is dead. It may come back one day if somebody does it. 1996-05-02 09:34:51 +00:00
Poul-Henning Kamp
2572133ed3 NBPG -> PAGE_SIZE 1996-05-02 09:23:36 +00:00
Jordan K. Hubbard
582af1726d Add wcd0 to `all' target. The fate of the IDE CDROM support in 2.2 
is becoming clearer.. :-)
 1996-05-02 09:15:57 +00:00
Poul-Henning Kamp
875c5798b6 NBPG -> PAGE_SIZE 1996-05-02 09:10:21 +00:00
Poul-Henning Kamp
a8b878b7d1 NBPG -> getpagesize() 1996-05-02 09:09:04 +00:00
Poul-Henning Kamp
0e51b8b85d Use PAGE_SIZE instead of NBPG 1996-05-02 08:43:37 +00:00
Poul-Henning Kamp
d71458ee72 Cache the result of getpagesize() so we only make one syscall. 
Use getpagesize instead of CLBYTES.
 1996-05-02 08:43:05 +00:00
Poul-Henning Kamp
3a91de068c Replace NBPG with getpagesize() 1996-05-02 08:37:16 +00:00
Jordan K. Hubbard
0e9e4efa0a Yow! /dev/wcd0c got omitted from the boot.flp somehow. Guess that explains 
why ATAPI CDROMs were broken in the last (and this!) SNAPSHOT.. :-(
Oh well, next SNAP I guess.
 1996-05-02 08:18:28 +00:00
Bill Fenner
df5c0b8a7a Back out my stupid braino; I was thinking strlen and not sizeof. 1996-05-02 05:54:14 +00:00
Bill Fenner
af00f8007c Size temp var correctly; buf[4*sizeof "123"] is not long enough 
to store "192.252.119.189\0".
 1996-05-02 05:31:13 +00:00
Mike Pritchard
a251b9e77e Convert the time2posix man page to mdoc format. This still 
needs some other cleanup, but it is good enough for now.
 1996-05-01 23:17:27 +00:00
Mike Pritchard
417349c472 Fix a typo. 1996-05-01 22:49:36 +00:00
Mike Pritchard
eea782bac2 Remove a redundant description of the EMFILE error, and fix a typo. 
Submitted by:	James Raynard <jraynard@dial.pipex.com>
 1996-05-01 22:20:40 +00:00
Poul-Henning Kamp
9f507bd3f1 Add section with pgp keys (feel free to give it a better layout) 
Add me back as patch-kit contributor.
 1996-05-01 20:11:01 +00:00
Mark Murray
f99e7fdd20 Provide a rudimentary man page for this, based mostly on the README.PATCH. 1996-05-01 17:16:23 +00:00
Mark Murray
f3da898049 Rewrite this a bit. The patch has already been applied, and users 
do not need to followmost of the upgrading instructions.
 1996-05-01 17:15:30 +00:00
Jordan K. Hubbard
cf839171ab Bump SNAP date to 960501 since that's what it is now. Next SNAP, these 
WON'T be hardcoded in here! :-)
 1996-05-01 09:42:17 +00:00
Jordan K. Hubbard
f8a779d65b Might as well be factual. Sigh! 1996-05-01 09:35:34 +00:00
Jordan K. Hubbard
4d1ff43651 Fix the last known bogon with the packages menu. It's SNAP time! 1996-05-01 09:31:50 +00:00
Jordan K. Hubbard
a0918e0beb Make the call to fortune here conditional as well. 1996-05-01 09:23:30 +00:00
Jordan K. Hubbard
e4465ce377 If we've selected X, select the compat21 distribution as well. 1996-05-01 08:50:00 +00:00
Jordan K. Hubbard
56359f702d Add the compat21 dist. 1996-05-01 08:42:40 +00:00
Bruce Evans
2dafbfcbab Added calibration the i8254 and the i586 clocks agains the RTC at boot 
time.  The results are currently ignored unless certain temporary options
are used.

Added sysctls to support reading and writing the clock frequency variables
(not the frequencies themselves).  Writing is supposed to atomically
adjust all related variables.

machdep.c:
Fixed spelling of a function name in a comment so that I can log this
message which should have been with the previous commit.

Initialize `cpu_class' earlier so that it can be used in startrtclock()
instead of in calibrate_cyclecounter() (which no longer exists).

Removed range checking of `cpu'.  It is always initialized to CPU_XXX
so it is less likely to be out of bounds than most variables.

clock.h:
Removed I586_CYCLECTR().  Use rdtsc() instead.

clock.c:
TIMER_FREQ is now a variable timer_freq that defaults to the old value of
TIMER_FREQ.  #define'ing TIMER_FREQ should still work and may be the best
way of setting the frequency.

Calibration involves counting cycles while watching the RTC for one second.
This gives values correct to within (a few ppm) + (the innaccuracy of the
RTC) on my systems.
 1996-05-01 08:39:02 +00:00
Bruce Evans
0f99c703ec i386/machdep.c 
include/clock.h
isa/clock.c
 1996-05-01 08:31:21 +00:00
Jordan K. Hubbard
5e26fb6fdf Include <sys/buf.h> so that this does't blow up with B_WRITE undefined. 
I fully updated my src tree and did a `make includes' in /usr/src before
trying this fix, so I can only presume that Bruce missed something.
 1996-05-01 06:31:18 +00:00
Bruce Evans
119bc2cc9b Oops, restored existent option LINUX. It is used at config-time. 1996-05-01 05:04:38 +00:00
Bruce Evans
3da92a61e0 Made this self-sufficent (except for <sys/types.h>) when compiled in 
user mode.

Improved formatting and comments (mostly punctuation in comments).
 1996-05-01 04:18:20 +00:00
Bruce Evans
b1d3d2ffcf Fixed a race that caused panics in kernel printfs when the screen timeout 
routine changed the screen pointers while output was in progress.
 1996-05-01 03:58:21 +00:00
Bruce Evans
eabe0f9f57 Don't return unused values in cpu_switch() or savectx(). 
Don't preserve unused registers in the NPX case in savectx().
 1996-05-01 03:47:04 +00:00
Bruce Evans
3722e90e21 Removed unused #include. 1996-05-01 03:32:46 +00:00
Jordan K. Hubbard
7653020ceb Micro tweak for getting the Holographic shell message to stay on the 
screen longer.
 1996-05-01 03:31:08 +00:00
Bruce Evans
7c243b9add Removed nonexistent option "LINUX" (what's that :-). 1996-05-01 03:30:04 +00:00
Bruce Evans
2c703b3e86 Only disable sio3 by default. 1996-05-01 03:26:58 +00:00
Bruce Evans
52efa6c17d Default to udp if neither udp nor tcp is specified. The previous revision 
was broken.  It forced udp in all cases except the extremely unusual case
argc == 0.
 1996-05-01 03:13:45 +00:00
Bruce Evans
5ab934f670 Removed prototype for obsolete function sleep(). 1996-05-01 02:52:05 +00:00
Bruce Evans
a794e791c8 Removed unnecessary #includes from <sys/imgact.h> so that it is 
self-sufficient and added explicit #includes where required.
 1996-05-01 02:43:13 +00:00
Bruce Evans
2043dc9a22 Removed bogus _BEGIN_DECLS/_END_DECLS. 
Removed unused struct tag declarations in cloned code.

Added or cleaned up idempotency ifdefs.
 1996-05-01 02:16:17 +00:00
Bruce Evans
44d5b3c883 Made this self-sufficent (apart from <sys/types.h>) again. It included 
<sys/stat.h> and <sys/filedesc.h> just to get struct tags and depended
on a previous #include for <sys/queue.h>
 1996-05-01 01:53:59 +00:00
Jordan K. Hubbard
36088788e2 Alex Nash added for his contribution of the compat21 distribution. 1996-05-01 01:49:03 +00:00
Bruce Evans
deff23e5b1 Made this compile again. A comment delimiter got deleted in the Lite2 
changes.
 1996-05-01 01:46:00 +00:00
Bruce Evans
50e9e20943 Fixed incomplete or wrong lists of prerequisite #includes related to 
<sys/types.h>.
 1996-05-01 01:45:23 +00:00
Bruce Evans
9c6e4f2a7c Fixed incomplete or wrong lists of prerequisite #includes related to 
<sys/types.h>.
 1996-05-01 01:40:04 +00:00
Bruce Evans
3a880d5ded Fixed a wrong prerequisite #include and a missing function-arg type. 1996-05-01 01:18:43 +00:00
Bruce Evans
6c0be88a57 Fixed misformatted #include (.Ft -> .Fd). 1996-05-01 01:04:44 +00:00