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340 Commits

Author SHA1 Message Date
cgd
21d1e8d60f fix bug in load average calculation that prevented processes which were 
uninterruptibly sleeping for a short period from being counted.
 1995-07-08 03:12:22 +00:00
mycroft
7263209ce6 Make each disk and tape driver define its own read and write functions. 
Deprecate rawread() and rawwrite() completely.  Remove d_strategy from cdevsw to
force the abstraction barrier.
 1995-07-04 07:15:28 +00:00
cgd
cfbb9c7cfe no longer needs machine/cpu.h, and use new name for the 'broken swap' define 1995-06-28 02:58:51 +00:00
leo
f205966027 The atari specific code can be removed now it is using MACHINE_NONCONTIG. 1995-06-26 14:40:11 +00:00
cgd
7bd5b4bfa8 oops; vm_pageout.c should include machine/cpu.h, _not_ vm_pager.c 1995-05-07 19:27:27 +00:00
cgd
cf08de5cf0 needs machine/cpu.h 1995-05-07 16:22:40 +00:00
cgd
0b2ce5d881 delete some cruft, don't swap if BROKEN_SWAP defined, call cpu_swapout rather than #ifdef 1995-05-05 03:35:39 +00:00
mycroft
5f41ce9281 Correct checks for NULLs in pagertab. 1995-04-15 05:11:35 +00:00
mycroft
68c8c80929 kernel_pmap --> pmap_kernel() 1995-04-10 16:48:27 +00:00
briggs
6efcd1b6d4 KERNEL -> _KERNEL 1995-03-29 21:57:43 +00:00
cgd
9141ec70a1 change needed for atari; recycle some code for the i386 that was in Lite 
that we don't use, but is used by the atari now.  (it should change
to MACHINE_NONCONTIG, too...)
 1995-03-27 09:09:05 +00:00
jtc
f76f1f89ad KERNEL -> _KERNEL 1995-03-26 20:35:13 +00:00
mycroft
57e6889435 Make memory map syscalls consistently use size_t. 1995-03-09 17:28:28 +00:00
cgd
94d77171f9 need compat_43_getpagesize on COMPAT_OSF1 1995-03-08 01:46:53 +00:00
mycroft
3d869b0608 Fix two off-by-one errors. 1995-01-09 17:36:48 +00:00
cgd
70f70a3122 make grow's arguments type-correct. 1995-01-09 02:48:03 +00:00
cgd
4b5b562e89 turn spaces to tabs 1995-01-09 02:47:38 +00:00
cgd
d158991669 don't wrap lines 1995-01-09 02:47:23 +00:00
cgd
1af9a586a5 fix vm_page_startup's return type, kill an odd 'register' 1995-01-09 02:46:41 +00:00
cgd
86095ef7e6 no need to have two lines of arguments here. 1995-01-09 02:45:47 +00:00
cgd
688a174a72 move munmapfd into the correct section, make grow take a proper argument. 1995-01-09 02:45:29 +00:00
cgd
2d8771217f can move FALSE up a line. 1995-01-09 01:33:17 +00:00
cgd
b1f6bfa080 kill extraneous label 1995-01-09 01:30:46 +00:00
pk
3e4bf211c6 Use vm_object_prefer() to find a good range of virtual addresses to 
map a memory object to.
 1994-12-10 11:48:12 +00:00
pk
d114baba9a Introduce vm_object_prefer(), which interrogates the PMAP layer in search 
for an optimal virtual address for a given object.
 1994-12-10 11:46:25 +00:00
mycroft
331b95bd8a Garbage collect unneeded variable. 1994-12-01 15:39:17 +00:00
gwr
1a7920257d Make sure vm_mmap creates mappings with page-aligned file offsets. 
Handle non-aligned file offsets in the mmap/munmap system calls.
 1994-12-01 00:23:11 +00:00
gwr
0a0c02cd38 Allow vm_page_array to have holes in it so systems that use 
MACHINE_NONCONTIG can use a fast, simple pmap_page_index().
 1994-12-01 00:19:57 +00:00
cgd
0a930e5ce6 redo that last change, correctly. (suggested by mycroft.) 1994-10-30 19:11:09 +00:00
cgd
aa151f86b3 change some strategic casts to (*long) from (*int). 1994-10-29 07:35:04 +00:00
cgd
6b86130410 update for new syscall args description mechanism 1994-10-20 04:22:35 +00:00
cgd
4eb752cd51 make the "wait on swbuf" message SDB_IO -- it's I/O related, and it's 
not at all anomalous (and bloody annoying!) on 4M machines.
 1994-10-18 06:42:28 +00:00
mycroft
ab9caa0e9a Fix the munmapfd() prototype, too. 1994-09-16 02:01:49 +00:00
mycroft
d5fdf729f2 All of the users of munmapfd() expect to pass it 
two args.  Make it work correctly.
 1994-09-16 01:57:57 +00:00
mycroft
6dd2f9eed2 vm_object_page_clean() expects to be able to use vm_page_deactivate() on a 
locked page.  Make that work.  This also obviates the need for vm_fault() to
bogusly activate a page before deactivating it.  Finally, make sure the
semantics of vm_object_deactive_pages() don't change.
 1994-09-07 20:25:07 +00:00
mycroft
2f710a54ee Convert process, file, and namei lists and hash tables to use queue.h. 1994-08-30 03:04:28 +00:00
deraadt
72b3d408b9 replace "ctob(UPAGES)" and "UPAGES * NBPG" with "USPACE" 1994-08-23 22:07:42 +00:00
mycroft
fe18d806d2 Don't panic if primary swap device is not configured. 1994-07-21 07:12:13 +00:00
cgd
fccfa11af5 New RCS ID's, take two. they're more aesthecially pleasant, and use 'NetBSD' 1994-06-29 06:39:25 +00:00
cgd
9608c5b657 clean up slightly; change RCS ID's to be minimally intrusive 1994-06-27 04:55:46 +00:00
cgd
e4c9e4b2cd these were supposed to be written in C; they should follow its syntax 1994-06-27 04:03:15 +00:00
pk
bccc2c3c1b straighten out diskless swap code somewhat. 1994-06-22 14:01:45 +00:00
cgd
bf43549e44 fix a thinko that kept msync from working if no size specified. 1994-06-20 00:17:28 +00:00
mycroft
0d8affb278 Turn P_NOSWAP and P_PHYSIO into a hold count, as suggested by a comment. 1994-06-15 19:59:21 +00:00
pk
11ebd2e9c8 #ifdef FIFO's 1994-06-13 16:31:54 +00:00
pk
5d4bd29314 Check for all NFS related vnode ops. 1994-06-10 20:01:20 +00:00
mycroft
264b874c14 Update to 4.4-Lite fs code, with local changes. 1994-06-08 11:41:58 +00:00
mycroft
9eb7a8a711 Fix minor NFS glitch introduced with new VM code. 1994-05-30 13:10:06 +00:00
pk
7672b8b95b New style core dumps. 1994-05-25 10:56:56 +00:00
cgd
0094e3719e change warnings 1994-05-24 01:07:50 +00:00
mycroft
5a9d09c5d5 Clean up deleted files. 1994-05-23 03:12:14 +00:00
cgd
3495827959 new VM code, from 4.4-Lite 1994-05-23 03:11:20 +00:00
cgd
11b6c06344 no need to include <sys/vmmeter.h> 1994-05-21 04:00:13 +00:00
mycroft
72edd4b918 For MAP_ANON, force the file offset to 0. I can't think of any any bad side 
effects of this, and it fixes an interesting bug.
 1994-05-19 18:03:04 +00:00
cgd
207339d53d define maxdmap and maxsmap 1994-05-19 08:08:46 +00:00
cgd
c6abdc2054 setrq -> setrunqueue, sched -> scheduler 1994-05-13 00:50:41 +00:00
cgd
6fea3fab9a oops; spaces at ends of lines, etc. 1994-05-11 01:01:03 +00:00
cgd
904bdb2ea9 sysctl 1994-05-07 00:40:07 +00:00
cgd
ca14e4af10 stubs 1994-05-07 00:39:58 +00:00
cgd
d0a066a438 functions soon to be added 1994-05-06 22:45:29 +00:00
cgd
162c8601c0 latent sysctl support 1994-05-06 22:44:22 +00:00
mycroft
31393b8acd Rearrange some code, and fix a condition where the pageout scanner would start 
grabbing pages from the active queue.
 1994-05-05 20:35:11 +00:00
cgd
0f2ecb72f6 lots of changes: prototype migration, move lots of variables, definitions, 
and structure elements around.  kill some unnecessary type and macro
definitions.  standardize clock handling.  More changes than you'd want.
 1994-05-05 05:40:40 +00:00
cgd
4bbabd8e7a Rename a lot of process flags. 1994-05-04 03:41:12 +00:00
cgd
f8dd4f370d expand the rlimit struct, kill last vestiges of off_t bogosity. 1994-05-04 01:38:25 +00:00
mycroft
06a4a02877 Add some DIAGNOSTIC code to detect trying to free a page that is being faulted 
in.
 1994-04-29 08:21:49 +00:00
cgd
f50f031448 kill syscall name aliases. no user-visible changes 1994-04-29 04:41:02 +00:00
cgd
e5ad8074f2 minor code structure nit that i pointed out to hibler a while ago... 1994-04-29 03:56:26 +00:00
cgd
10b63d74bc SHUT UP! 1994-04-28 03:51:58 +00:00
cgd
95fcf16b66 add sequential swap device support, supplied by hibler many moons ago. 
(Note that it needs config support, too, which isn't there yet, but
might be soon...)  Also, general cleanup.  use NODEV to terminate swdevt,
so that sparc port (and future) is happy.
 1994-04-25 23:53:51 +00:00
cgd
3dda0064a5 Convert mount, vnode, and buf structs to use <sys/queue.h>. Also, 
some knf and structure frobbing to do along with it.
 1994-04-21 07:47:31 +00:00
cgd
ee3e1168b7 undo a mistaken deletion. at least i found it... 1994-04-20 21:46:15 +00:00
cgd
551e92c16a start to phase out temp. off_t syscalls 1994-04-16 23:19:06 +00:00
cgd
ad6c540f90 cancel some of my stupidity, thanks to charles. 1994-04-15 22:49:15 +00:00
cgd
ae41edb3e8 typo, pointed out by charles. 1994-04-15 18:02:02 +00:00
cgd
ece66170de somehow, these didn't get committed!!! 1994-04-15 08:14:27 +00:00
mycroft
c51913cd19 Clean up deleted files. 1994-04-15 07:05:05 +00:00
cgd
e937bc9bfd convert vm system to use new queues. I'll never write code w/queues again. 1994-04-15 07:04:03 +00:00
cgd
ed740c7de8 frob arguments a little bit 1994-04-02 08:39:20 +00:00
cgd
b7e76677c6 expand uid_t/gid_t/off_t 1994-03-27 09:09:57 +00:00
chopps
b8f74df1a5 default type is MAP_FILE if none given. 1994-03-23 01:54:02 +00:00
cgd
70dabb7d43 don't be so agressive w/renaming, clean for consistency, types in one place. 1994-03-17 02:51:57 +00:00
mycroft
a8f3db1d79 Use b_actf, not av_forw. 1994-02-06 10:13:02 +00:00
cgd
f34b215083 add kinfo_loadavg 1994-01-28 04:50:47 +00:00
cgd
e69c297456 do not clean fictitious pages. from WS (sent a long time ago...) 1994-01-15 02:39:58 +00:00
cgd
3c39708b08 oops; get rid of a mis-inclusion in the last change 1994-01-13 18:20:36 +00:00
cgd
81d655b943 uncomment defn of exec_map 1994-01-13 04:25:01 +00:00
cgd
5cc251df11 kill iffy optimization 1994-01-13 02:43:09 +00:00
mycroft
19065b312a Fix a compiler warning. 1994-01-08 05:58:21 +00:00
mycroft
9dd94bc684 Still more prototypes. 1994-01-08 05:26:10 +00:00
mycroft
9c9af600ee Make some functions static. 1994-01-08 04:59:08 +00:00
mycroft
287956ae88 Yet more prototypes. 1994-01-08 04:38:16 +00:00
mycroft
e879c04f57 #include vm_user.h. 1994-01-08 04:22:36 +00:00
mycroft
f36df1e764 More prototypes. 1994-01-08 04:17:49 +00:00
mycroft
8955aeedd5 #include vm_user.h. 1994-01-08 04:15:41 +00:00
mycroft
d37579f554 More cleanup and prototyping. 1994-01-08 04:02:36 +00:00
mycroft
d66944976a Some minor rearrangement and cleanup. 1994-01-08 03:24:19 +00:00
mycroft
5df89bd778 Fix up some #includes, and add a bunch of prototypes. 1994-01-08 01:11:21 +00:00
mycroft
4181f14213 Add some explicit return types, and make a bunch of things static. 1994-01-07 23:36:15 +00:00
mycroft
8c5b51d9dc Add some explicit return types. 1994-01-07 22:48:40 +00:00
mycroft
c7f0925a52 Add some explicit return types. 1994-01-07 22:46:05 +00:00
mycroft
bbe22a5947 Add some explicit return types. 1994-01-07 22:34:37 +00:00
mycroft
d77a163cac Kill third arg to thread_sleep(). It's always false and isn't used anyway. 1994-01-07 22:22:20 +00:00
mycroft
92992e3c3a Don't forget to poke the page daemon. 1994-01-07 20:33:14 +00:00
mycroft
75a4916007 Add an explicit return type. 1994-01-07 19:21:06 +00:00
mycroft
1b184192e1 Add some explicit return types, and make vm_object_print #ifdef DDB | DEBUG. 1994-01-07 19:15:44 +00:00
mycroft
c521a31e87 No need to clear these bits, since we just bzero()d the silly thing. 1994-01-07 18:32:14 +00:00
mycroft
a8dc1eb25a Add an explicit return type. 1994-01-07 18:14:07 +00:00
mycroft
17e7b7e1bd Make vnode_pager_putpage return an int, like other *_putpage routines. 1994-01-07 18:12:12 +00:00
mycroft
4343c468c5 Trivial stylistic change to match other code. 1994-01-07 18:11:38 +00:00
mycroft
f8258a5b44 Add missing return value. 1994-01-07 17:12:51 +00:00
cgd
c26286a5c1 bring changes down from magnum 1993-12-20 12:39:55 +00:00
mycroft
b4d3382694 Canonicalize all #includes. 1993-12-17 07:56:32 +00:00
mycroft
6c0eb81987 Fix typo in DIAGNOSTIC code. 1993-12-06 13:00:49 +00:00
pk
053e467648 Use proc0's credentials in buffer used for IO to swap device. 
Especially useful when swapping over NFS.
 1993-11-29 16:05:20 +00:00
cgd
76dbc1192b new specfs.h and fifo.h locations 1993-11-12 05:54:12 +00:00
cgd
9d0e9ed1c1 fix setup of b_dirtyoff and b_dirtyend when writing out a page. 
from Mike Hibler.
 1993-11-10 22:43:34 +00:00
cgd
56adbe979f make absent absent 1993-11-10 08:22:05 +00:00
cgd
d580099dde fix those last changes, and quiet a compiler warning. 1993-11-10 08:11:47 +00:00
cgd
554c91f74a change some flags back to bitfields, so it compiles. 1993-11-03 14:49:22 +00:00
cgd
64c1e3b2f5 new device pager from mike hibler, hibler@lamp. this is in its 'virgin' state 1993-11-03 14:48:42 +00:00
cgd
215649adeb from Mark Tinguely (tinguely@plains.NoDak.edu): record when processes are 
swapped...
 1993-10-19 02:54:09 +00:00
cgd
e98e3183fc get rid of a few ref's to buffer_map 1993-10-11 02:11:28 +00:00
cgd
13a840d756 generalize kernacc() to any protections in the function "kerncheckprot()", 
and prototype it.
 1993-10-06 23:38:19 +00:00
cgd
f09334ef6c we need the buffer hack again, now that we have a real vfs_bio... 1993-10-06 02:06:49 +00:00
cgd
95e5868ee2 allow an offset to *really* be passed in for mmap's on devices. 
From Julian Elischer.
 1993-10-02 00:00:21 +00:00
mycroft
00e8bf23cd Add `#ifdef DIAGNOSTIC' around check for dirty pages in persistent objects. 1993-09-23 22:20:29 +00:00
cgd
9c32bc786a make allproc be volatile, and cast things accordingly. 
suggested by torek, because CSRG had problems with reordering
of assignments to allproc leading to strange panics from kernels
compiled with gcc2...
 1993-09-15 22:30:32 +00:00
brezak
b4940ad7a0 Wrap iprintf, vm_object_print, vm_map_print to allow passing a printf function. 1993-09-13 14:10:35 +00:00
cgd
37e8d5291e get rid of bogosities of the form "vm_maxsaddr + MAXSSIZ", and replace 
them with USRSTACK.  the former was a hack by wfj to accomodate his screwy
execve() implementation.  the latter is a (minor) reversion to net/2.
 1993-09-04 01:29:22 +00:00
cgd
6a474f29e2 get rid of maxdmap, and seperate MAXDSIZ and MAXSSIZ in rlimit checking. 1993-09-04 00:37:54 +00:00
glass
2cb87de98b fixs long broken 'dequeue' macro which would expand to 'dequeue_head' which 
is never defined. added fix from my private sources:
#define dequeue_head(queue)     remqueue(queue, queue_first(queue))
no one noticed, because everyone used the 'remqueue' interface except me.
 1993-09-01 15:55:26 +00:00
deraadt
ae8b49f87b #ifdef pc532 in same places as #ifdef i386 1993-09-01 08:49:45 +00:00
deraadt
a87b4a30bd pagers are now options, not pseudo-devices 1993-08-30 07:09:20 +00:00
brezak
7f550be7fd Remove prototype for pmap_bootstrap() 1993-08-29 12:12:20 +00:00
cgd
405b084fe6 return some errors other than EIO from swstrategy() 1993-08-29 01:50:20 +00:00
brezak
15c3400ffe Machine independant changes to VM for handling non-contiguous memory. 1993-08-27 23:45:55 +00:00
andrew
4e65827b6c Moved vm_map_create()'s out-of-maps panic to a more appropriate place. 1993-08-19 03:13:24 +00:00
mycroft
fbd4257135 Put `#ifdef notyet' around some code which is currently defunct. 1993-08-14 10:02:30 +00:00
andrew
22dff5862a Removed the user area protection gunk I painstakingly removed in revision 
1.9.  It has not been necessary since then due to a segment fixup made to
machdep.c that prevents access to anything above MAX_VMUSER_ADDRESS.
 1993-08-13 03:50:02 +00:00
cgd
acf8d8b584 deal with ddb bogosities 1993-08-07 06:03:02 +00:00
cgd
26817f18ab fix prettyprinting changes that caused the kernel to not link if you 
defined DIAGNOSTIC but not DDB...
 1993-08-07 05:08:11 +00:00
mycroft
a0aed26669 Remove a spurious `#' added two revisions ago. 1993-08-03 01:56:52 +00:00
mycroft
4862b84c92 Add RCS identifiers (this time on the correct side of the branch), and 
incorporate recent changes in netbsd-0-9 branch.
 1993-08-01 19:22:24 +00:00
jtc
3643c134f1 Change "#endif FOO" to "#endif /* FOO */", to keep gcc -Wall, lint, etc. 
from complaining about a trivial issue.
 1993-07-29 21:42:19 +00:00
cgd
7b2afa7fe6 incorporate changes from 0-9-base to 0-9-ALPHA 1993-07-28 02:20:34 +00:00
pk
36a6e635b3 Committing in src/sys/vm 
Modified Files:
	vm_object.c

call vm_object_remove() to remove an object from the hashtable when
vm_object_collapse() starts fiddling with pagers.
 1993-07-28 00:00:01 +00:00
brezak
9d7e246a03 Cleanup pretty printers for maps and objects. 1993-07-22 13:03:36 +00:00
cgd
24e3cbad44 according to andrew, the bit with the comment: 
>       /* protect from the user area from user accesses. :-)
>          addr -> addr + UPAGES*NBPG don't seem to be protected without
>          this; the rest seems to be OK, and doesn't like being protected
>          - andrew@werple.apana.org.au */
*is* necessary, so put it back in...  it's in an #ifdef i386 part anyway.
 1993-07-19 13:47:09 +00:00
andrew
aa381d0e73 vm_protect() of the user area is no longer required for i386 machines; the 
protection is implemented by adjusting the bounds of the user segment
descriptors.
 1993-07-18 08:19:34 +00:00
mycroft
ad087b06a0 Finish moving struct definitions outside of function declarations. 1993-07-17 15:56:59 +00:00
mycroft
97cae397ee Finish moving struct definitions outside of function declarations. 1993-07-17 15:24:33 +00:00
cgd
fd3c8fa35a fix a whole slew of off-by-one errors 1993-07-15 15:42:17 +00:00
cgd
4b90229cd2 do the "right thing" with mmap protections, once and for all. 
in particular, if an object is mapped private, DO NOT grant
VM_PROT_ALL protections to it; it could be sensitive data.
 1993-07-15 14:48:37 +00:00
cgd
b8b3b4471d get rid of any support for vm_fault_wire() returning a result. 
if it's going to be ifdef'd out until it's tested, it shouldn't
be put in to begin with.
also, minor ansifications and cleanups (mostly so tags would be happier).
 1993-07-15 14:25:18 +00:00
cgd
999eb6ce5b get rid of extraneous thread_wakeup()s, added at sef's prompting, 
which would never be called anyway.  leave his vm_page_activate()
change in though, as it is correct.
 1993-07-15 14:07:51 +00:00
cgd
5287574e0a get rid of bogus retrymalloc code (and it was bogus)... 1993-07-15 13:33:23 +00:00
cgd
b99e3b6666 get rid of bogus protections chacking which conflicts w/guido's 
patch...
 1993-07-07 11:25:32 +00:00
cgd
09844fbcfe make the rlist code all go away. replace it with resource map code, 
as written by Wolfgang Solfrank.
 1993-07-07 06:04:12 +00:00
cgd
8ebc845441 got rid of (obviously) bogus assignment which followed free(). 1993-07-02 10:26:49 +00:00
andrew
7a0e26cd13 Paul Kranenburg's VM deadlock patches (from patchkit 00147, parts 3 & 4). 
Prevent dirty objects from being cached, and prevent vm_page_alloc() from
allocating too much memory to non-kernel objects.
 1993-06-30 03:48:25 +00:00
mycroft
5f8b3f4ff4 Oops. Get rid of the `#ifndef MYCROFT_IS_A_DORK'. B-) 1993-06-29 19:38:50 +00:00
mycroft
d94e5eecbb Fix some off-by-one errors. 1993-06-29 13:47:05 +00:00
andrew
5705dde7e9 Disallow access to the user pages, where the kernel stack is stored. This 
is effected in useracc(), and also by a vm_protect() in vm_fork() for i386
CPUs.  Without the latter a write to the user area, say USRSTACK+1000,
would hang a 386-based system.
 1993-06-29 07:16:31 +00:00
andrew
918a434644 ANSIfications. Added support for vm_fault_wire() returning a result; code 
to actually fail is currently disabled, as this would enable some new code
in vm_map_pageable() (disabled in this commit) that hasn't been used to
date.  I'm fairly confident it is all OK, but shall test it some more once
the rest of the kernel is more stable, before enabling it.
 1993-06-27 06:38:48 +00:00
andrew
51ac6a0997 ANSIfications. 1993-06-27 06:27:29 +00:00
cgd
0e761b8d7e fix behavior when VM_MAXUSER_ADDRESS == (-UPAGES * NBPG) 1993-06-21 10:18:20 +00:00
brezak
800afb6fec Remove annonying printf when adding swap. 1993-06-17 16:34:25 +00:00
cgd
1b44fd4c31 fix syntax errors caused by *not* having any one of the pagers... 1993-05-29 17:03:06 +00:00
deraadt
ada4945e6b patches to make kernel malloc() retryable. from <MDICKSON@CSI.compuserve.com> 1993-05-27 14:34:29 +00:00
cgd
cc5e8e00d5 add rcs ids and clean up headers 1993-05-20 03:59:08 +00:00
cgd
3cec79bb72 add counters for vmstat 1993-05-07 07:12:43 +00:00
cgd
db3da84702 add bruce evans's useracc fixes, from patchkit patch 137. 1993-05-07 07:03:50 +00:00
cgd
b235aec4f6 fix free page count determination 1993-05-07 06:59:45 +00:00
cgd
fd7c50fd61 patch from Pete Chown <pc123@cus.cam.ac.uk> to fix mmap 
modes vs. read/write permissions problem.
 1993-05-07 01:58:11 +00:00
cgd
645b67012b make it panic, like i thought it did, for mb_map too small. 1993-04-29 08:57:02 +00:00
mycroft
0b48d59355 Fix utter inanity I committed last night. 1993-04-29 00:46:21 +00:00
mycroft
a203e5704b Implement previous change more cleanly. 1993-04-28 04:00:49 +00:00
mycroft
87dc98f60b Introduce a new panic() condition in case I missed something. 1993-04-28 03:04:57 +00:00
mycroft
95090f0a13 Don't use first block of swap area. 1993-04-28 03:04:25 +00:00
mycroft
235bd1db44 Add consistent multiple-inclusion protection. 1993-04-19 03:45:34 +00:00
glass
33d009a09c Prevents you from creating double faults and such mmaping stuff on top 
of the kernel, etc. Tested.  Derived from BSDI public patches
 1993-04-10 15:06:01 +00:00
cgd
4493ba8058 fixed stupid typo (missing comma) in hand-applied diff 1993-04-09 17:19:02 +00:00
cgd
a128c34f9c From: Guido van Rooij <guido@gvr.win.tue.nl> 
when mmapping a file, permissions are checked as it should be. When
mprotect()-ing the address range afterwards, no protection was checked
regarding the protection of the file originally opened. So
when you open /usr/bin/su RDONLY and SHARED you could afterwards change
the mmapped region to READ|WRITE. This gave the possibility to obtain
root privs obviously.
 1993-04-09 17:16:30 +00:00
cgd
202313150e changes, running on sef's machine to good effect, likely contributed 
by torek.  (sef told me to get them, and their origin...)
 1993-04-09 17:13:17 +00:00
cgd
827c75471f From: andrew@werple.apana.org.au (Andrew Herbert) 
Here are some fixes I derived from the mach 3.0 VM system a couple of months
ago.  At the time, I was giving the memory object routines a good looking
at, trying to fix the long-standing problem where vm_object_collapse()
sometimes fails to collapse objects left over from the exit of a forked
child.  As bde has noted, the problem seems to occur when portions of the
parent are paged out.  These "lost" memory objects, which can eat up a huge
amount of swap space, are reclaimed when the parent responsible for the
fork()s is killed.
 1993-04-09 16:53:46 +00:00
cgd
3cac22992d from sean eric fagan: 
it seems to keep the vm system from deadlocking the system when it runs
out of swap + physical memory.
prevents the system from giving the last page(s) to anything but the
referenced "processes" (especially important is the pager process,
which should never have to wait for a free page).
 1993-04-09 15:54:56 +00:00
cgd
64354bb7c6 broke out panics for *_map too small, and tried to coalesce the maps more 
often.
 1993-03-31 21:53:56 +00:00
cgd
e541169ce2 after 0.2.2 "stable" patches applied 1993-03-21 18:04:42 +00:00
cgd
61f282557f initial import of 386bsd-0.1 sources 1993-03-21 09:45:37 +00:00