Commit Graph

25962 Commits

Author SHA1 Message Date
Poul-Henning Kamp
3344c5a17e Create a general facility for making dev_t's depend on another
dev_t.  The dev_depends(dev_t, dev_t) function is for tying them
to each other.

When destroy_dev() is called on a dev_t, all dev_t's depending
on it will also be destroyed (depth first order).

Rewrite the make_dev_alias() to use this dependency facility.

kern/subr_disk.c:
Make the disk mini-layer use dependencies to make sure all
relevant dev_t's are removed when the disk disappears.

Make the disk mini-layer precreate some magic sub devices
which the disk/slice/label code expects to be there.

kern/subr_disklabel.c:
Remove some now unneeded variables.

kern/subr_diskmbr.c:
Remove some ancient, commented out code.

kern/subr_diskslice.c:
Minor cleanup.  Use name from dev_t instead of dsname()
2001-05-26 08:27:58 +00:00
Jordan K. Hubbard
caff01c276 Remove pcm hints here now that it's gone from GENERIC.
Reminded-by:	bde
2001-05-26 08:04:34 +00:00
Doug Barton
ffd41c9876 Update reality in the strings comment 2001-05-26 06:01:43 +00:00
Andrew Gallatin
9c201d7ba1 catch up to i386: Don't acquire Giant just to print the trap and panic 2001-05-25 21:03:40 +00:00
Andrew Gallatin
9a6832a398 make this compile. 2001-05-25 20:56:28 +00:00
Matt Jacob
fe95b46491 track the One True Architecture (i386) 2001-05-25 20:33:06 +00:00
Warner Losh
e0e5247337 Fix a minor formatting nit 2001-05-25 19:24:58 +00:00
John Baldwin
9d127f9ffb Add vm locking to sendfile(2) and sf_buf_free().
Reported by:	Tamiji Homma <thomma@BayNetworks.com>
Tested by:	Tamiji Homma <thomma@BayNetworks.com>
2001-05-25 19:23:04 +00:00
Warner Losh
ee327e92e1 Move to using the common device list.
Move to table driven probing of these devices since we have such a long list.
2001-05-25 19:22:36 +00:00
Warner Losh
db0d08ca8f Separate out pci cardbus bridge definitions to a common file for use
by both OLDCARD and NEWCARD.

# didn't make the tables the same because oldcard supports more devices than
# newcard and newcard's 16-bit stuff needs some work.
2001-05-25 19:12:58 +00:00
David E. O'Brien
3355915e54 JHB would prefer the KTR examples not be in here. 2001-05-25 18:49:08 +00:00
Warner Losh
995823e999 Migrate from unit based to dev base. Don't save unit number, but do save
dev.  Convert all uses of unit to dev as appropriate.  Minor comment fixes
to pcic_softc definition.
2001-05-25 18:28:49 +00:00
Thomas Moestl
3c436f07b7 Add a check to determine whether extended attributes have been
initialized on the file system before trying to grab the lock of the
per-mount extattr structure, as this lock is unitialized in that case.
This is needed because ufs_extattr_vnode_inactive is called from
ufs_inactive, which is also used by EA-unaware file systems such as
ext2fs.

Reviewed by:	rwatson
2001-05-25 18:24:52 +00:00
Warner Losh
acf5760400 Update copyright info 2001-05-25 18:03:07 +00:00
Jordan K. Hubbard
62d1937cec Take pcm (audio) back out of GENERIC; there appears to be some
concensus, most notably among the maintainers, that it's better
loaded as a module.

Finally-pushed-over-the-edge-by-the-anguished-cries-of:	rwatson
2001-05-25 17:55:39 +00:00
Robert Watson
b1fc0ec1a7 o Merge contents of struct pcred into struct ucred. Specifically, add the
real uid, saved uid, real gid, and saved gid to ucred, as well as the
  pcred->pc_uidinfo, which was associated with the real uid, only rename
  it to cr_ruidinfo so as not to conflict with cr_uidinfo, which
  corresponds to the effective uid.
o Remove p_cred from struct proc; add p_ucred to struct proc, replacing
  original macro that pointed.
  p->p_ucred to p->p_cred->pc_ucred.
o Universally update code so that it makes use of ucred instead of pcred,
  p->p_ucred instead of p->p_pcred, cr_ruidinfo instead of p_uidinfo,
  cr_{r,sv}{u,g}id instead of p_*, etc.
o Remove pcred0 and its initialization from init_main.c; initialize
  cr_ruidinfo there.
o Restruction many credential modification chunks to always crdup while
  we figure out locking and optimizations; generally speaking, this
  means moving to a structure like this:
        newcred = crdup(oldcred);
        ...
        p->p_ucred = newcred;
        crfree(oldcred);
  It's not race-free, but better than nothing.  There are also races
  in sys_process.c, all inter-process authorization, fork, exec, and
  exit.
o Remove sigio->sio_ruid since sigio->sio_ucred now contains the ruid;
  remove comments indicating that the old arrangement was a problem.
o Restructure exec1() a little to use newcred/oldcred arrangement, and
  use improved uid management primitives.
o Clean up exit1() so as to do less work in credential cleanup due to
  pcred removal.
o Clean up fork1() so as to do less work in credential cleanup and
  allocation.
o Clean up ktrcanset() to take into account changes, and move to using
  suser_xxx() instead of performing a direct uid==0 comparision.
o Improve commenting in various kern_prot.c credential modification
  calls to better document current behavior.  In a couple of places,
  current behavior is a little questionable and we need to check
  POSIX.1 to make sure it's "right".  More commenting work still
  remains to be done.
o Update credential management calls, such as crfree(), to take into
  account new ruidinfo reference.
o Modify or add the following uid and gid helper routines:
      change_euid()
      change_egid()
      change_ruid()
      change_rgid()
      change_svuid()
      change_svgid()
  In each case, the call now acts on a credential not a process, and as
  such no longer requires more complicated process locking/etc.  They
  now assume the caller will do any necessary allocation of an
  exclusive credential reference.  Each is commented to document its
  reference requirements.
o CANSIGIO() is simplified to require only credentials, not processes
  and pcreds.
o Remove lots of (p_pcred==NULL) checks.
o Add an XXX to authorization code in nfs_lock.c, since it's
  questionable, and needs to be considered carefully.
o Simplify posix4 authorization code to require only credentials, not
  processes and pcreds.  Note that this authorization, as well as
  CANSIGIO(), needs to be updated to use the p_cansignal() and
  p_cansched() centralized authorization routines, as they currently
  do not take into account some desirable restrictions that are handled
  by the centralized routines, as well as being inconsistent with other
  similar authorization instances.
o Update libkvm to take these changes into account.

Obtained from:	TrustedBSD Project
Reviewed by:	green, bde, jhb, freebsd-arch, freebsd-audit
2001-05-25 16:59:11 +00:00
Scott Long
7edce08ac4 Fix DMA on machines with more than 128MB.
Obtained from:	cg
MFC after:	5 days
2001-05-25 16:05:22 +00:00
Poul-Henning Kamp
d951f85b28 Make if_tun's clone create SI_CHEAPCLONE devices. 2001-05-25 13:32:53 +00:00
Poul-Henning Kamp
5696db457d Make the PTY drivers cloning algorithm create "CHEAPCLONE" dev_t,
so that some twit cannot allocate all 256 PTY's with "ls -l".
2001-05-25 13:23:42 +00:00
David E. O'Brien
0ec59619a5 + Turn on SMP support by default (yes an Alpha SMP kernel works on
uniprocessor systems, aren't Alpha's neat :-))
+ Add example KTR (debugging) options.
2001-05-25 10:36:46 +00:00
Poul-Henning Kamp
48c35f87be Don't lie to diskerr() now that it listens to us. 2001-05-25 09:07:23 +00:00
Poul-Henning Kamp
2613d3fec9 Use the name given to the dev_t, rather than creating our own.
This makes it possible to give sensible information for /dev/fd.720
and similar "special" devices.
2001-05-25 09:06:52 +00:00
Hellmuth Michaelis
6b244dc54b Submitted by: Juha-Matti Liukkonen (Cubical Solutions Ltd) (jml@cubical.fi)
Add a CAPI (hardware independent) driver i4bcapi(4) and hardware driver
iavc (4) to support active CAPI-based BRI and PRI cards (currently AVM
B1 and T1 cards) to isdn4bsd.
2001-05-25 08:43:30 +00:00
Ruslan Ermilov
1166fb516b - sys/msdosfs moved to sys/fs/msdosfs
- msdos.ko renamed to msdosfs.ko
- /usr/include/msdosfs moved to /usr/include/fs/msdosfs
2001-05-25 08:14:14 +00:00
Warner Losh
f7d83eb183 Add intrack field to each slot. This can be used to acknowledge
interrupts on other buses.  Right now it isn't used, but will be for
the pci attachment.

# Add copyright by me for this year since I've changed so much.
2001-05-25 05:25:43 +00:00
Warner Losh
5da1cb2e2f Minor name space issues. 2001-05-25 05:22:00 +00:00
Poul-Henning Kamp
25e0288d07 Don't rely on cdevsw_add() when we hack about with dev_t's. 2001-05-24 20:28:06 +00:00
Poul-Henning Kamp
8576c652b4 Don't take the detour around devsw() to find out if the proto-cdevsw
is already initialized.
2001-05-24 20:27:16 +00:00
Bruce Evans
03c0300c01 Oops. Unremove vestiges of the old, broken sound drivers. They are now
used in new drivers.
2001-05-24 18:19:00 +00:00
Alfred Perlstein
0cea693084 whitespace/style 2001-05-24 18:06:22 +00:00
John Baldwin
190609dd48 Stick VM syscalls back under Giant if the BLEED option is not defined. 2001-05-24 18:04:29 +00:00
John Baldwin
ba83773edc Add a new kernel option 'BLEED' to be used for code that is still under
development but is being developed in the tree for whatever reason.

Not objected to by:     peter, jlemon
2001-05-24 17:01:51 +00:00
Bruce Evans
dd015692a7 Remove vestiges of the old, broken sound drivers. 2001-05-24 16:52:13 +00:00
Ruslan Ermilov
c7b23e0fb4 Actually rename FDESC, PORTAL, UMAP and UNION file systems.
OK'ed by:	bp
2001-05-24 15:20:11 +00:00
Ruslan Ermilov
c99d12581a mount_umap(8) -> mount_umapfs(8). 2001-05-24 13:20:41 +00:00
Ruslan Ermilov
57a523ae6b mount_null(8) -> mount_nullfs(8). 2001-05-24 13:17:47 +00:00
Yoshihiro Takahashi
d8b08f1591 (Re-)enabled boot2. 2001-05-24 11:19:43 +00:00
Yoshihiro Takahashi
f040ac4cec Update boot[12] program to compile ELF binary.
Submitted by:	Nobuyuki Koganemaru <n-kogane@syd.odn.ne.jp> and
		kawanobe@st.rim.or.jp (Kawanobe Koh)
2001-05-24 11:18:32 +00:00
Poul-Henning Kamp
9d9bdb3dc5 Restrict even further what parts of <sys/conf.h> can be seen from
userland.
2001-05-24 09:33:08 +00:00
David E. O'Brien
5864b79cd2 Make the rcsid and FreeBSD IDs more sane in the wcs* and wmem* files.
Do the same for the non-wcs*/wmem* files while I'm here.
2001-05-24 08:47:42 +00:00
Matthew Dillon
ac8f990bde This patch implements O_DIRECT about 80% of the way. It takes a patchset
Tor created a while ago, removes the raw I/O piece (that has cache coherency
problems), and adds a buffer cache / VM freeing piece.

Essentially this patch causes O_DIRECT I/O to not be left in the cache, but
does not prevent it from going through the cache, hence the 80%.  For
the last 20% we need a method by which the I/O can be issued directly to
buffer supplied by the user process and bypass the buffer cache entirely,
but still maintain cache coherency.

I also have the code working under -stable but the changes made to sys/file.h
may not be MFCable, so an MFC is not on the table yet.

Submitted by:	tegge, dillon
2001-05-24 07:22:27 +00:00
Warner Losh
8cad38176d Use bus_space functions rather than inb/outb.
Add defines for PCIC_INDEX and PCIC_DATA offsets.
Change PCIC_INDEX_0 to PCIC_PORT_0
Add define for PCIC_NPORT.
Document why the vadem probe works.
2001-05-24 06:54:48 +00:00
Peter Wemm
a4b82094bc Produce a config-time warning about EXT2FS and GPL_MATH_EMULATE 2001-05-24 06:26:18 +00:00
Peter Wemm
6aa0a2e57a Remove DEV_SNP -> opt_snp.h
Forgotten by:  dd
2001-05-24 06:24:06 +00:00
Warner Losh
4d5a4ec15f Do what we should have done a long time ago:
o If the class is PCIC_BRIDGE, subclass is PCIS_BRIDGE_PCMCIA and
  programming interface is 0, assume that it is a generic PCMCIA PCI
  chip we can program.  I don't think there are any of these that
  we don't know about, but you never know.
o If the class is PCIC_BRIDGE, subclass is PCIS_BRIDGE_CARDBUS and
  programming interface is 0, assume that it is a YENTA cardbus bridge
  that we know how to cope with.  There are likely some cardbus bridges
  that haven't it made it in here yet.
2001-05-24 04:24:22 +00:00
Warner Losh
99efcc2bb9 Move getb1 and putb1 from pcic_isa.c to pcic.c. Rename them to
pcic_{get,put}b_io.  There are some pci bridges (the CL-PD6729 and
maybe others) that do not have memory mapped registers, so we'll need
these in both places.  Declare them in pcicvar.h.
2001-05-24 04:03:28 +00:00
Dima Dorfman
2f799208a5 Add snp_olddisc member to struct snoop; the linedisc'ized snp(4) uses this.
Pointy hat to:	dd
2001-05-24 00:43:44 +00:00
Dima Dorfman
028f979d1d Correct style bugs with regards to long lines and comments.
Reviewed by:	bde
2001-05-23 23:38:05 +00:00
Dima Dorfman
636b9e70d2 Build snp(4) as a module. 2001-05-23 23:33:08 +00:00
Greg Lehey
7b4bf18baa Change #if VINUMDEBUG to #ifdef VINUMDEBUG. This is a flag, not a variable. 2001-05-23 23:24:05 +00:00
John Baldwin
0dfefe6829 Don't acquire Giant just to call trap_fatal(), we are about to panic
anyway so we'd rather see the printf's then block if the system is
hosed.
2001-05-23 22:58:09 +00:00
John Baldwin
bdc60f5bd3 Don't release Giant around vm_oject_page_clean() in fsync() as the pager
putpages called will need Giant.
2001-05-23 22:55:13 +00:00
John Baldwin
e6b961ffbd - Assert Giant is held in the vnode pager methods.
- Lock the VM while walking down a vm_object's backing_object list in
  vnode_pager_lock().
2001-05-23 22:51:23 +00:00
John Baldwin
3614c6fcbb - Add in several asserts of vm_mtx.
- Assert Giant in vm_pageout_scan() for the vnode hacking that it does.
- Don't hold vm_mtx around vget() or vput().
- Lock Giant when calling vm_pageout_scan() from the pagedaemon.  Also,
  lock curproc while setting the P_BUFEXHAUST flag.
- For now we still hold Giant for all of the vm_daemon.  When process
  limits are locked we will be only need Giant for swapout_procs().
2001-05-23 22:48:28 +00:00
John Baldwin
60517fd1f7 - Assert that the vm lock is held for all of _vm_object_allocate().
- Restore the previous order of setting up a new vm_object.  The previous
  had a small bug where we zero'd out the flags after we set the
  OBJ_ONEMAPPING flag.
- Add several asserts of vm_mtx.
- Assert Giant is held rather than locking and unlocking it in a few
  places.
- Add in some #ifdef objlocks code to lock individual vm objects when
  vm objects each have their own lock someday.
- Don't bother acquiring the allproc lock for a ddb command.  If DDB
  blocked on the lock, that would be worse than having an inconsistent
  allproc list.
2001-05-23 22:42:10 +00:00
John Baldwin
21c641b2a9 - Add lots of vm_mtx assertions.
- Add a few KTR tracepoints to track the addition and removal of
  vm_map_entry's and the creation adn free'ing of vmspace's.
- Adjust a few portions of code so that we update the process' vmspace
  pointer to its new vmspace before freeing the old vmspace.
2001-05-23 22:38:00 +00:00
John Baldwin
3a2189d451 - Lock the VM around the pmap_swapin_proc() call in faultin().
- Don't lock Giant in the scheduler() function except for when calling
  faultin().
- In swapout_procs(), lock the VM before the proccess to avoid a lock order
  violation.
- In swapout_procs(), release the allproc lock before calling swapout().
  We restart the process scan after swapping out a process.
- In swapout_procs(), un #if 0 the code to bump the vmspace reference count
  and lock the process' vm structures.  This bug was introduced by me and
  could result in the vmspace being free'd out from under a running
  process.
- Fix an old bug where the vmspace reference count was not free'd if we
  failed the swap_idle_threshold2 test.
2001-05-23 22:35:45 +00:00
John Baldwin
b608320d4a - Fix the sw_alloc_interlock to actually lock itself when the lock is
acquired.
- Assert Giant is held in the strategy, getpages, and putpages methods and
  the getchainbuf, flushchainbuf, and waitchainbuf functions.
- Always call flushchainbuf() w/o the VM lock.
2001-05-23 22:31:15 +00:00
John Baldwin
6d556da5c2 Assert Giant is held for the device pager alloc and getpages methods since
we call the mmap method of the cdevsw of the device we are mmap'ing.
2001-05-23 22:27:52 +00:00
John Baldwin
ce70e0a964 Assert Giant is held by the caller rather than getting it and releasing
it in getpages/putpages.
2001-05-23 22:26:05 +00:00
John Baldwin
8aa66068ed - Always call bfreekva() w/o vm_mtx held.
- Always call vfs_setdirty() with vm_mtx held.
- Fix an old comment: vm_hold_unload_pages is called vm_hold_free_pages()
  nowadays.
- Always call vm_hold_free_pages() w/o vm_mtx held.
2001-05-23 22:24:49 +00:00
John Baldwin
c7f52620e0 Don't acquire/release Giant around some of the places that need it in
spec_getpages().  Instead, assert that Giant is held by the caller.
2001-05-23 22:20:29 +00:00
John Baldwin
e4ca250d4b - Obtain Giant in mmap() syscall while messing with file descriptors and
vnodes.
- Fix an old bug that would leak a reference to a fd if the vnode being
  mmap'd wasn't of type VREG or VCHR.
- Lock Giant in vm_mmap() around calls into the VM that can call into
  pager routines that need Giant or into other VM routines that need
  Giant.
- Replace code that used a goto to jump around the else branch of a test
  to use an else branch instead.
2001-05-23 22:17:43 +00:00
Alfred Perlstein
1f50e112b6 pmap_mapdev needs the vm_mtx, aquire it if not already locked 2001-05-23 22:17:28 +00:00
Alfred Perlstein
b99c886a7f lock vm while playing with pmap 2001-05-23 22:13:58 +00:00
John Baldwin
bb10bb4978 Acquire Giant around vm_map_remove() inside of the obreak() syscall for
vm_object_terminate().
2001-05-23 22:13:10 +00:00
Bill Paul
95f27dc639 Regenerate 2001-05-23 22:11:25 +00:00
Bill Paul
134c58d3c0 Tweak the xmphy driver a little bit based on something I learned about
the built-in 1000baseX interface in the Level 1 LXT1001 chip. The Level 1
PHY comes up with the isolate bit in the control register set by default,
but it also has the autonegotiate bit set. When you tell the xmphy driver
to select IFM_AUTO mode, it sees that the autoneg bit is already on, and
thus doesn't bother updating the control register. However this means that
the isolate bit is never turned off (unless you manually select 1000baseSX
full or half duplex mode, which does result in the control register being
modified and the ISO bit being turned off).

This subtle and unusual behavioral difference stopped me from being able
to receive packets on the SMC9462TX card for several days, since isolating
the PHY disconnects it from the MAC's data interface. The fix is to omit
the 'is the autoneg big set?' test, since it doesn't really provide much
of an optimization anyway.

This commit also updates the xmphy driver to support the Jato/Level 1
internal PHY. (I'm not sure how Jato Technologies is related to Level 1:
all I know is the OUI from the PHY ID registers maps to Jato in the OUI
database.) This will be used once I add the if_lge driver to support
the LXT10010 chip.
2001-05-23 22:10:55 +00:00
John Baldwin
576f0c5fa4 Take a more conservative approach and still lock Giant around VM faults
for now.
2001-05-23 22:09:18 +00:00
John Baldwin
1b2555b243 - Lock the VM when initializing the vmspace for proc0.
- Don't bother releasing Giant while doing a lookup on the vm_map of
  initproc while starting up init.  We have to grab it again right after
  the lookup anyways.
2001-05-23 22:06:47 +00:00
John Baldwin
613c83cbf1 Lock the VM while twiddling the vmspace. 2001-05-23 22:05:08 +00:00
Bosko Milekic
629db60492 Increment mbstat.m_mpfail, not mbstat.m_mcfail, when m_pullup() fails.
This slipped in accidently a few commits back.
2001-05-23 20:44:54 +00:00
Hajimu UMEMOTO
12ae55c6f2 Fix memory leak.
Submitted by:	itojun
2001-05-23 20:41:17 +00:00
Poul-Henning Kamp
4638caddb7 Polish getnano{up}*time() prototypes.
PR:		15908
Submitted by:	Kelly Yancey kbyanc@posi.net
2001-05-23 20:33:54 +00:00
John Baldwin
c52f090cfb Set the phys_pager_alloc_lock to 1 when it is acquired so that it is
actually locked.
2001-05-23 19:52:23 +00:00
John Baldwin
5bd57bc8b7 Don't release the vm lock just to turn around and grab it again. 2001-05-23 19:51:12 +00:00
Doug Rabson
a0e512b219 Make sure that all resource allocation is handled in the pcib device, not
the chipset. This is already how the multi-hose systems handle resource
allocation and it fixes a bug where dense and bwx memory allocations were
not handled properly.

Reviewed by: gallatin
2001-05-23 19:44:17 +00:00
John Baldwin
b516d2f5e1 Add in assertions to ensure that we always call msleep or mawait with
either a timeout or a held mutex to detect unprotected infinite sleeps
that can easily lead to deadlock.

Submitted by:	alfred
2001-05-23 19:38:26 +00:00
Poul-Henning Kamp
f73cf22ade Vlan tags are 12 bits, mask off anything above since the chip doesn't
seem to do so for us.

PR:		27567
Submitted by:	Koji HINO hino@ccm.cl.nec.co.jp
MFC after:	1 week
2001-05-23 19:25:14 +00:00
Poul-Henning Kamp
4787f91d6b syslogd gets kernel log messages only once every 30 seconds or
at the top of the minute, whichever comes first.  It seems
logtimeout() is only called once after the kernel log is opened
and then never again after that.  So I guess syslogd only gets
kernel log messages by virtue of syncer(4)'s flushes ...?

PR:		27361
Submitted by:	pkern@utcc.utoronto.ca
MFC after:	1 week
2001-05-23 19:02:50 +00:00
Poul-Henning Kamp
840d4a82e4 Use '+' not '|' to add PCATCH to tsleep. 2001-05-23 17:54:58 +00:00
Poul-Henning Kamp
840e78b879 Use the correct enums in struct sysinit. 2001-05-23 17:53:24 +00:00
Poul-Henning Kamp
3b6c05fa7f Remove the empty uscannerioctl() and use noioctl() instead. 2001-05-23 17:51:43 +00:00
Poul-Henning Kamp
5a9300c451 Change the way deletes are managed in DEVFS.
This fixes a number of warnings relating to removed cloned devices.

It also makes it possible to recreate deleted devices with
mknod(2).  The major/minor arguments are ignored.
2001-05-23 17:48:20 +00:00
Andrew Gallatin
42fcdcb3e9 catch up to i386:
- remove Giant for vm related traps
- don't hold Giant for MP safe syscalls

Reviewed-by: jhb
2001-05-23 16:34:07 +00:00
Alfred Perlstein
1752ee59ba ufs_bmaparray() may block on IO, drop vm mutex and aquire Giant when
calling it from the pager routine
2001-05-23 10:30:25 +00:00
Alfred Perlstein
c5e62505ad aquire Giant when playing with the buffercache and doing IO.
use msleep against the vm mutex while waiting for a page IO to complete.
2001-05-23 10:28:11 +00:00
Alfred Perlstein
53240603ee aquire vm_mutex a little bit earlier to protect a pmap call. 2001-05-23 10:26:36 +00:00
Ruslan Ermilov
2c4645034f The following modules were renamed:
fdesc -> fdescfs
portal -> portalfs
umap -> umapfs
union -> unionfs
2001-05-23 10:06:48 +00:00
Ruslan Ermilov
801060df34 Name this module `umapfs'. 2001-05-23 10:02:22 +00:00
Ruslan Ermilov
99d300a1ec - FDESC, FIFO, NULL, PORTAL, PROC, UMAP and UNION file
systems were repo-copied from sys/miscfs to sys/fs.

- Renamed the following file systems and their modules:
  fdesc -> fdescfs, portal -> portalfs, union -> unionfs.

- Renamed corresponding kernel options:
  FDESC -> FDESCFS, PORTAL -> PORTALFS, UNION -> UNIONFS.

- Install header files for the above file systems.

- Removed bogus -I${.CURDIR}/../../sys CFLAGS from userland
  Makefiles.
2001-05-23 09:42:29 +00:00
Greg Lehey
468f05c7f7 Move objflags from vinumvar.h to vinumobj.h in preparation for
requiring fewer header files for userland programs.

Remove the gross debug device/non-debug device hack used to recognize
whether the kernel module was in sync with the userland module.
2001-05-23 05:27:40 +00:00
Greg Lehey
dd3dced8c4 Move objflags from vinumvar.h to vinumobj.h in preparation for
requiring fewer header files for userland programs.
2001-05-23 05:27:15 +00:00
Greg Lehey
4ec8f62211 Move external declaration to vinumhdr.h. 2001-05-23 05:26:40 +00:00
Greg Lehey
bc55b89e25 Set flag VF_HASDEBUG in vinum_conf to indicate that the module was
compiled with debug support.  This can be used by userland programs to
recognize which ioctls the module supports.

As a result, remove the gross debug device/non-debug device hack used
to recognize whether the kernel module was in sync with the userland
module.

Replace explicit references to major/minor numbers of vinum
superdevice with the VINUM_SUPERDEV macro written for that purpose.
2001-05-23 05:25:45 +00:00
Warner Losh
a8ed536b94 Add better support for the Ricoh 5C296 and 5C396 chips. These chips
have a slightly different 3.3V support than the other clones, so
compensate as best we can.  Note: 3.3V support is untested since I do
not have any 3.3V cards that I know of to test it with.
2001-05-23 05:06:04 +00:00
Warner Losh
e0e34f291e Add recognition for Toshiba ToPIC-100.
Submitted by: Shimodaira Toshio <tshimod1@ym.nsw.co.jp> in [bsd-nomads:15589]
2001-05-23 04:37:00 +00:00
Dima Dorfman
a61a2e8e90 Add a makefile for snp(4) since it can be compiled as a module now. 2001-05-22 22:56:47 +00:00
Greg Lehey
4b2ec3c529 New header file.
Missed by:	Szilveszter Adam <sziszi@petra.hos.u-szeged.hu>
		David Wolfskill <david@catwhisker.org>
Pointy hat to:	grog
2001-05-22 22:29:35 +00:00
Dima Dorfman
0150c6e83d Unifdef DEV_SNP; snp(4) no longer requires these ugly hacks.
Silence by:	-hackers, -audit
2001-05-22 22:16:18 +00:00
Dima Dorfman
47eaa5f542 Convert this driver to (ab?)use line disciplines to get the input it
needs instead of relying on idiosyncratic hacks in the tty subsystem.
Also add module code since this can now be compiled as a module.

Silence by:	-hackers, -audit
2001-05-22 22:13:14 +00:00
Bruce Evans
1c1771cb5b Convert npx interrupts into traps instead of vice versa. This is much
simpler for npx exceptions that start as traps (no assembly required...)
and works better for npx exceptions that start as interrupts (there is
no longer a problem for nested interrupts).

Submitted by:	original (pre-SMPng) version by luoqi
2001-05-22 21:20:49 +00:00
Alfred Perlstein
240e0fdd93 aquire vm mutex in swp_pager_async_iodone. Don't call swp_pager_async_iodone
with the mutex held.
2001-05-22 19:01:26 +00:00
Andrew Gallatin
3bd404a4e2 grab the vm mtx around exec_new_vmspace() 2001-05-22 18:45:12 +00:00
Brian Somers
6ce76643aa MALLOC -> malloc, FREE -> free 2001-05-22 18:10:57 +00:00
Hajimu UMEMOTO
8d67252492 M_COPY_PKTHDR has to be done before MCLGET.
Obtained from:	KAME
2001-05-22 17:32:02 +00:00
Ruslan Ermilov
0a13f04ebe Hide UNION in opt_dontuse.h (see vfs_syscalls.c,v 1.109). 2001-05-22 08:32:13 +00:00
John Baldwin
86e92ee7e1 Remove duplicate include and sort includes. 2001-05-22 07:21:46 +00:00
John Baldwin
7d4ad42de5 Sort includes. 2001-05-22 07:01:11 +00:00
Greg Lehey
3b0d9edc7b Add vinumobj.h to SRCS. 2001-05-22 06:12:47 +00:00
Greg Lehey
74f5bf080b Remove Malloc definitions (now in vinumext.h) 2001-05-22 06:08:52 +00:00
John Baldwin
12635f9c89 Unlock the VM lock at the end of munlock() instead of locking it again. 2001-05-22 06:07:36 +00:00
John Baldwin
874468957d Sort includes from previous commit. 2001-05-22 05:35:45 +00:00
Dima Dorfman
a8dbafbe87 Correct the vm_mtx handling; specifically, don't acquire it in
shm_deallocate_segment because shmexit_myhook calls it, and the latter
should always be called with it already held.

Submitted by:	dwmalone, dd
Approved by:	alfred
2001-05-22 03:56:26 +00:00
Greg Lehey
c6ef641d24 Add a field 'version' to vinum_conf. This field is a constant which
gets incremented every time the kernel-userland interface changes.
This enables vinum(8) to check for the correct kernel version and to
produce a useful message if it doesn't match.

Requested by:	Too many to count.

Move the definitions of struct drive, sd, plex and volume to
vinumobj.h.

Add a new debug flag, DEBUG_LOCKREQS, which logs only lock requests.
2001-05-22 02:37:28 +00:00
Greg Lehey
2e387f1bd3 vinumstart: If a write request is for a RAID-[45] plex or a volume
with more than one plex, the data will be accessed
            multiple times.  During this time, userland code could
            potentially modify the buffer, thus causing data
            corruption.  In the case of a multi-plexed volume this
            might be cosmetic, but in the case of a RAID-[45] plex it
            can cause severe data corruption which only becomes
            evident after a drive failure.  Avoid this situation by
            making a copy of the data buffer before using it.

	    Note that this solution does not guarantee any particular
	    content of the buffer, just that it remains unchanged for
	    the duration of the request.

Suggested by:	alfred
2001-05-22 02:36:47 +00:00
Greg Lehey
5be7546b83 tokenize: Take third parameter specifying the maximum number of
parameters to return.  This code is used both in userland and in the
kernel.
2001-05-22 02:35:57 +00:00
Greg Lehey
24ad5cd24b Cosmetics: wrap long lines to be < 80 characters. 2001-05-22 02:35:19 +00:00
Greg Lehey
c4d4f4147d Add a new debug flag, DEBUG_LOCKREQS, which logs only lock requests.
Use this instead of DEBUG_LASTREQS to decide whether to log lock
requests.

MFS:

vinumlock: Catch a potential race condition where one process is
           waiting for a lock, and between the time it is woken and
           it retries the lock, another process gets it and places it
           in the first entry in the table.

           This problem has not been observed, but it's possible, and
           it's easy enough to fix.

Submitted by:   tegge

vinumunlock: Catch a real bug capable of hanging a system.  When
             releasing a lock, vinumunlock() called wakeup_one.  This
             caused wakeups to sometimes get lost.  After due
             consideration, we think that this is due to the fact that
             you can't guarantee that some other process is also
             waiting on the same address.  This makes wakeup_one a
             very dangerous function to use.
2001-05-22 02:34:30 +00:00
Greg Lehey
cf65a3dc63 Change ioctls to use the expurgated userland version of the Vinum
structures.
2001-05-22 02:33:32 +00:00
Greg Lehey
acac8659d7 format_config: Replace long format lines.
Requested by:  bde

Add retryerrors keyword.

vinum_scandisk: Print a different message if an inadvertent start
command did not find any additional drives.  The previous message "no
drives found" confused and worried many people.

MFS:

vinum_open: Recognize Mylex devices as storage devices.
2001-05-22 02:32:22 +00:00
Greg Lehey
ab15c118bf complete_rqe:
In case of error, check the VF_RETRYERRORS flag in the subdisk and
  don't take the subdisk down if it's set, just retry the I/O.

  Requested by:	peter

  If the buffer has been copied (XFR_COPYBUF), release the copied
  buffer when the I/O completes.

  Suggested by:	alfred
2001-05-22 02:31:08 +00:00
Greg Lehey
0e414969e0 Remove unnecessary declarations of userland functions.
Desired by:	   bde

This commit is the first of a general cleanup of the header files..
It won't be enough to make bde happy.

Move debug definitions from vinumhdr.h.
2001-05-22 02:30:44 +00:00
Greg Lehey
177bb9657f config_sd: Add code to recognize "retryerrors" keyword.
config_plex: Don't create the device until we're finished.

parse_config: check for corrupted configuration, thus avoiding a
potential panic.

remove_sd_entry: Restore structure.
2001-05-22 02:29:54 +00:00
Greg Lehey
7e18e4ffbc free_vinum: Change some explicit struct member references to the SD,
PLEX and VOL.
2001-05-22 02:29:15 +00:00
Greg Lehey
2c4a6d9016 Add xferinfo flag bit for copied buffers.
Create a new struct rangelockinfo.  In revision 1.21 of vinumlock.c,
the plex info was removed from struct rangelock, since it wasn't
needed there.  It *is* needed for trace information, however, so use
struct rangelockinfo for that.
2001-05-22 02:28:55 +00:00
Greg Lehey
1739a10826 New file containing definitions for separate views of objects for
userland and kernel.
2001-05-22 01:41:12 +00:00
Alfred Perlstein
a4d22b8035 Remove KASSERT test for sleeping on mv_mtx, instead let WITNESS catch
it.

Requested by: jhb
2001-05-22 00:58:20 +00:00
John Baldwin
4edf4a58e6 Sort includes. 2001-05-22 00:56:25 +00:00
Dima Dorfman
21fa152ffa Fix a grammar nit.
PR:		27520
Submitted by:	Michael Lucas <mwlucas@blackhelicopters.org>
2001-05-22 00:29:42 +00:00
John Baldwin
c4f96c5f83 Remove a few more spl's I missed earlier.
Reported by:	Michael Harnois <mdharnois@home.com>
Pointy hat:	me
2001-05-22 00:09:26 +00:00
John Baldwin
2178ff8b9f Sort includes from previous commit. 2001-05-21 23:19:50 +00:00
John Baldwin
9dceb26b23 Sort includes. 2001-05-21 18:52:02 +00:00
John Baldwin
270b041d95 - Assert that the vm mutex is held in pipe_free_kmem().
- Don't release the vm mutex early in pipespace() but instead hold it
  across vm_object_deallocate() if vm_map_find() returns an error and
  across pipe_free_kmem() if vm_map_find() succeeds.
- Add a XXX above a zfree() since zalloc already has its own locking,
  one would hope that zfree() wouldn't need the vm lock.
2001-05-21 18:47:17 +00:00
John Baldwin
d8aad40c88 Axe unneeded spl()'s. 2001-05-21 18:30:50 +00:00
Poul-Henning Kamp
c69ff89710 syslog.h fails to compile with -Wwrite-strings
PR:		27492
Submitted by:	Alexey V. Neyman <avn@any.ru>
2001-05-21 17:32:47 +00:00
Andrew Gallatin
08eceb4f4b Change pmap_emulate_reference() so that it only touches the vm_page
flags if it is safe to do so, otherwise it will just alter the pmap state
(eg, clear the appropriate PG_FOx bits).

This gets alpha booting in the face of the vm_mtx introduction.

Reviewed by: dfr
2001-05-21 16:09:29 +00:00
Andrew Gallatin
2ee7c91e2e catch these files up to their i386 neighbors to make alpha boot
prior to the vm_mtx
2001-05-21 16:04:24 +00:00
Yoshihiro Takahashi
bd0432d8b0 Update pc98 memory probe functions.
- pc98_getmemsize() function returns available memory size under 16MB.
 - getmemsize() function is merged from PC-AT's one.

Submitted by:	chi@bd.mbn.or.jp (Chiharu Shibata) and
		NOKUBI Hirotaka <nokubi@ff.iij4u.or.jp>
2001-05-21 12:51:44 +00:00
Yoshihiro Takahashi
c48d35696d Merged from sys/i386/isa/npx.c revisions 1.99 and 1.100. 2001-05-21 12:20:22 +00:00
Yoshihiro Takahashi
2877ab5bdb Merged from sys/i386/i386/machdep.c revisions 1.452 and 1.453. 2001-05-21 11:57:54 +00:00
Yoshihiro Takahashi
a93f8c6e6e Merged from sys/boot/i386/btx/btx/btx.s revision 1.24. 2001-05-21 11:49:21 +00:00
Hellmuth Michaelis
078aac9c09 Submitted by: Juha-Matti Liukkonen, Cubical Solutions Ltd (jml@cubical.fi)
Reviewed by:	hm

Bug in i4btel driver read routine corrected. The conditions in the
while() clause caused the receive queue to be referenced before checking
if a channel is connected, leading to kernel panic (do a 'dd
if=/dev/i4btel0 of=/dev/null' on an unconnected tel device, panic will
follow). Correction was to reorder the while clause conditions to check
for connectedness first.
2001-05-21 09:24:48 +00:00
Warner Losh
13ab4e6dc1 Move allocation of ExCA registers from the base driver into the bus
attachment code.
2001-05-21 07:32:46 +00:00
Warner Losh
2003c3f530 Move setting of Vcc bit to before the vcc switch statement. The
datasheets I have seem to indicate that generally this bit is viewed
as a toggle.  Correct comments to match code.
2001-05-21 05:49:15 +00:00
Warner Losh
57462c010c Next step on the road to pci: power taming.
Work through the various power commands and convert them from a "is
this a foo controller or a foo' controller or a foo''' controller" to
a cabability based scheme.  We have bits in the softc that tell us
what kind of power control scheme the controller uses, rather than
relying on being able to enumerate them all.  Cardbus bridges are
numerous, but nearly all implement the i82365sl-DF scheme (well, a few
implement cirrus CL-PD67xx, but those were made by Cirrus Logic!).

Add a pointer back to the softc in each pcic_slot so we can access
these flags.

Add comments that talk about the issues here.  Also note in passing
that there are two differ Vpp schemes in use and that we may need to
adjust the code to deal with both of them.  Note why it usually works
now.

We have 5 power management modes right now: KING, AB, DF, PD and VG.
AB is for the i82365 stpes A, B and C.  DF is for step DF.  PD is the
cirrus logic extensions for 3.3V while VG is the VADEM extensions for
3.3V.  KING is for the IBM KING controller found on some old cards.
# I'm looking for one of those old cards or a laptop that has the KING
# bridge in it.

We have to still cheat and treat the AB parts like the DF parts
because pci isn't here yet.  As far as I can tell, this is harmless
for actual old parts and necessary to work with 3.3V cards in some
laptops.

This almost eliminates all tests for controller in the code.  There
are still a few unrelated to power that need taming as well.
2001-05-21 04:44:14 +00:00
Warner Losh
e67316366d Next step towards pcic_pci: the ability to allocate mapped memory in attach.
o Introduce flags word to the softc.  This will be used to control various
  aspects of the driver.  Right now there are two bits defined, PCIC_IO_MAPPED
  and PCIC_MEM_MAPPED.  One for ISA cards that are I/O mapped, the other is
  for PCI cards that are memory mapped.  Only the ISA side is implemented
  with this commit.
o Introduce a pcic_dealloc which will cleanly dealloc resources used.  Right
  now it is only supported when called from probe/attach.
o Keep track of resources allocated in the pcic_softc.
o move pcictimeout_ch to the softc so we can support multiple devices
  in polling mode.
o In ISA probe, set PCIC_IO_MAPPED.
o Introduce and compute the slot mask.  This will be used later when
  we expand the number of slots on ISA from 2 to 4.  In such a case, we
  appear to have to use polling mode otherwise we get two different cards
  trying to drive the same interrupt line.  I don't have hardware to
  test this configuration, so I'll stop here.
2001-05-21 03:22:52 +00:00
Jun Kuriyama
da76f18bc6 Add description for 82801BA controller.
MFC after:	1 week
2001-05-21 01:24:14 +00:00
Warner Losh
69ffb52731 Two comments and one bug fix:
o Add defines for the VS[12]# bits in register 0x16.
o Add comment about what we're doing reading register 0x16 (PCIC_CDGC)
  in the DF case.
o Check bit VS1# rather than a random bit I was checking due to a bogus
  transcrition on my part from nakagawa-san's article.
o Add note about IBM KING and 3.3V operation from information larned from
  wildboard.
2001-05-21 00:55:44 +00:00
Alfred Perlstein
67d1f21cbe Aquire vm mutex when releasing sysv shm segments.
Obtained from: Dima Dorfman <dima@unixfreak.org>
2001-05-20 20:37:47 +00:00
Bruce Evans
17008f5343 Throw away the complications in npxsave() and their infrastructure.
npxsave() went to great lengths to excecute fnsave with interrupts
enabled in case executing it froze the CPU.  This case can't happen,
at least for Intel CPU/NPX's.  Spurious IRQ13's don't imply spurious
freezes.  Anyway, the complications were usually no-ops because IRQ13
is not used on i486's and newer CPUs, and because SMPng broke them in
rev.1.84.  Forcible enabling of interrupts was changed to
write_eflags(old_eflags), but since SMPng usually calls npxsave() from
cpu_switch() with interrupts disabled, write_eflags() usually just
kept interrupts disabled.
2001-05-20 20:04:40 +00:00
Bruce Evans
7010278935 Use a critical region to protect almost everything in npxinit().
npxinit() didn't have the usual race because it doesn't save to curpcb,
but it may have had a worse form of it since it uses the npx when it
doesn't "own" it.  I'm not sure if locking prevented this.  npxinit()
is normally caled with the proc lock but not sched_lock.

Use a critical region to protect pushing of curproc's npx state to
curpcb in npxexit().  Not doing so was harmless since it at worst
saved a wrong state to a dieing pcb.
2001-05-20 18:05:44 +00:00
Bruce Evans
259089eefc Use a critical region to protect pushing of curproc's npx state to
curpcb in vm86_bioscall().  I don't know if the state is ever in the
npx at that point.
2001-05-20 17:01:20 +00:00
Bruce Evans
c2b095ab72 Use a critical region to protect saving of the npx state in savectx().
Not doing this was fairly harmless because savectx() is only called
for panic dumps and the bug could at worse reset the state.

savectx() is still missing saving of (volatile) debug registers, and
still isn't called for core dumps.
2001-05-20 16:51:08 +00:00
Andrew Gallatin
c5c4ac3fb8 fix vm_mtx related compiler warning 2001-05-20 16:41:37 +00:00
Andrew Gallatin
29e7f33db5 fix alpha-MD compile errors after the vm_mtx commit 2001-05-20 16:22:46 +00:00
Kirk McKusick
57042c7f72 Update softdep_setup_directory_add prototype to reflect changes in
actual function.

Obtained from:	Jim Bloom <bloom@jbloom.jbloom.org>
2001-05-20 15:59:55 +00:00
Munechika SUMIKAWA
2bf767799a Plug memoly leak in overlaps fragment cases.
Obtained from:	KAME
2001-05-20 15:33:46 +00:00
MIHIRA Sanpei Yoshiro
1a92411c80 Add SmartLink 5634PCV SurfRider
PR:		kern/26952
Submitted by:	Simon Dick <simond@irrelevant.org>
2001-05-20 03:12:55 +00:00
John Polstra
a514569e9a Fix a range checking bug in ng_int32_parse which affected 64-bit
machines.  The code formerly read:

    long val;
    if (val < (long)-0x80000000 || ...)
            return EINVAL;

The constant 0x80000000 has type unsigned int.  The unary `-'
operator does not change the type (or the value, in this case).
Therefore the promotion to long is done by 0-extension, giving
0x0000000080000000 instead of the desired 0xffffffff80000000.  I
got rid of the `-' and changed the cast to (int32_t) to give proper
sign-extension on all architectures and to better reflect the fact
that we are range-checking a 32-bit value.

This commit also makes the analogous changes to ng_int{8,16}_parse
for consistency.

MFC after:	3 days
2001-05-19 19:36:32 +00:00
Kirk McKusick
dc01275be9 Must ensure that all the entries on the pd_pendinghd list have been
committed to disk before clearing them. More specifically, when
free_newdirblk is called, we know that the inode claims the new
directory block. However, if the associated pagedep is still linked
onto the directory buffer dependency chain, then some of the entries
on the pd_pendinghd list may not be committed to disk yet. In this
case, we will simply note that the inode claims the block and let
the pd_pendinghd list be processed when the pagedep is next written.
If the pagedep is no longer on the buffer dependency chain, then
all the entries on the pd_pending list are committed to disk and
we can free them in free_newdirblk. This corrects a window of
vulnerability introduced in the code added in version 1.95.
2001-05-19 19:24:26 +00:00
Brian Somers
c7fee90e33 #include <digi/*.h> -> #include <dev/digi/*.h>
Suggested by: bde
2001-05-19 17:06:48 +00:00
Brian Somers
c103d24a09 Fairwell digiio.h (moved to src/sys/sys) 2001-05-19 09:40:10 +00:00
Brian Somers
343ae1c099 digiio.h has moved to /usr/include/sys 2001-05-19 09:28:59 +00:00
Warner Losh
aa3a855755 Add back the plain i82365 to the list of bridges that do special
things to get 3.3V.  It appears that some cardbus chipsets have id
registers that say they are C step parts, but they really support the
DF step 3.3V functionality.

# Need to verify that IBM KING is handled properly since the MISC1
# register is really a cirrus logic only register.
2001-05-19 06:36:09 +00:00
Warner Losh
0eee936491 Initialize cinfo structure at compile time rather than run time since
they are now constant.
2001-05-19 06:17:37 +00:00
Warner Losh
b012272796 slots and next haven't been used in a while. GC them. 2001-05-19 06:13:12 +00:00
Jonathan Lemon
d9b610a0db Add new 'loadavg' entry, fix overflow with meminfo.
PR: 27253, 27350
Submitted by: Jim Pirzyk
2001-05-19 05:54:26 +00:00
Warner Losh
11695ef016 Now that we've moved the mecia support out of pcic.c to its own
driver, we no longer need to go through the cinfo.XXXX indirections.
restore the direct calls that were replaced earlier.
2001-05-19 05:50:42 +00:00
Jonathan Lemon
93e08c6931 Use new kernel_sysctlbyname function. Remove private copy. 2001-05-19 05:48:07 +00:00
Jonathan Lemon
1890520a77 Add convenience function kernel_sysctlbyname() for kernel consumers,
so they don't have to roll their own sysctlbyname function.
2001-05-19 05:45:55 +00:00
Warner Losh
bc0f2245d1 Move ISA specific code into pcic_isa. This is the probe routine, the
get/setb1 routines.  Also expose clrb and setb as pcic_{clrb,setb} so
we can use it from the probe.  pcic_probe is no longer needed.
2001-05-19 05:21:23 +00:00
Warner Losh
08db6b5c8e It turns out that Intel's i82365sl-DF step has the same ID as the VLSI
82C146.  The Intel i82365SL-DF supports 3.3V cards.  The Step A/B/C
parts do not appear to support this.  This is hard to know for sure
since it was deduced from "compatible" parts' data sheets and the
article mentioned below.

Rework the VLSI detection to be a little nicer and not depend on
scanning cards twice.  This would allow bad VLSI cards to coexist with
a good intel card, for example.  We now detect i82365SL-DF cards where
before we'd detect a VLSI.  For the most part, this is good, but we
run a small chance of detecting a single slot 82C146 as a i82365SL-DF.
Since I can't find a datasheet for the 82c146, I don't know if this is
a problem or not.

This work is based on an excellent article, in Japanese, by NAKAGAWA,
Yoshihisa-san that appeared in FreeBSD Press Number 4.  He provided a
patch against PAO3 in his article.  Since the pcic.c code has changed
some since then, I've gone ahead and cleaned up his patch somewhat and
changed how the code detects the buggy '146 cards.

I also removed the comment asking if there were other cards that
matched the 82C146 since we found one and additional information isn't
necessary.
2001-05-19 04:53:20 +00:00
Alfred Perlstein
5ee5c3aa1f remove my private assertions from tsleep.
add one assertion to ensure we don't sleep while holding vm.
2001-05-19 01:40:48 +00:00
Alfred Perlstein
2c3c846931 Regen syscalls that were made mpsafe via vm_mtx
obreak, getpagesize, sbrk, sstk, mmap, ovadvise, munmap, mprotect,
madvise, mincore, mmap, mlock, munlock, minherit, msync, mlockall,
munlockall
2001-05-19 01:37:12 +00:00
Alfred Perlstein
2395531439 Introduce a global lock for the vm subsystem (vm_mtx).
vm_mtx does not recurse and is required for most low level
vm operations.

faults can not be taken without holding Giant.

Memory subsystems can now call the base page allocators safely.

Almost all atomic ops were removed as they are covered under the
vm mutex.

Alpha and ia64 now need to catch up to i386's trap handlers.

FFS and NFS have been tested, other filesystems will need minor
changes (grabbing the vm lock when twiddling page properties).

Reviewed (partially) by: jake, jhb
2001-05-19 01:28:09 +00:00
Kirk McKusick
9f5192ff71 Must be a bit less aggressive about freeing pagedep structures.
Obtained from:	Robert Watson <rwatson@FreeBSD.org> and
		Matthew Jacob <mjacob@feral.com>
2001-05-18 22:16:28 +00:00
Nik Clayton
96bf38f272 Add a new ioctl to syscons, CONS_SCRSHOT. Given a userland buffer, it
copies out the current contents of the video buffer for a syscons terminal,
providing a snapshot of the text and attributes.

Based heavily on work originally submitted by Joel Holveck <joelh@gnu.org>
for 2.2.x almost 30 months ago, which I cleaned up a little, and forward
ported to -current.

See also the usr.bin/scrshot utility.
2001-05-18 08:52:56 +00:00
Boris Popov
10fa1684ed Currently there is no way to tell if write operation invoked via
vn_start_write() on the given vnode will be successful. VOP_LEASE() may
help to solve this problem, but its return value ignored nearly everywhere.
For now just assume that the missing upper layer on write means insufficient
access rights (which is correct for most cases).
2001-05-18 07:43:13 +00:00
David E. O'Brien
02c629d468 Make _BSD_TIME_T_ (time_t) an int' rather than long'. This will help
flag errors where programmers assume time_t is a long, which it is not on
64-bit platforms.

Submitted by:	bde
2001-05-18 01:43:25 +00:00
David E. O'Brien
ef76752043 Style changes -- revert ordering to mostly two revs ago.
Embellish some comments, fix tab'ing.

Requested by:	bde
2001-05-18 01:40:40 +00:00
John Baldwin
ea7549540f - Use a timeout for the tsleep in scheduler() instead of having vmmeter()
wakeup proc0 by hand to enforce the timeout.
- When swapping out a process, keep the process locked via the proc lock
  from the first checks up until we clear PS_INMEM and set PS_SWAPPING in
  swapout().  The swapout() function now must be called with the proc lock
  held and releases it before returning.
- Comment out the code to attempt to lock a process' VM structures before
  swapping out.  It is broken in that it releases the lock after obtaining
  it.  If it does grab the lock, it needs to hand it off to swapout()
  instead of releasing it.  This can be revisisted when the VM is locked
  as this is a valid test to perform.  It also causes a lock order reversal
  for the time being, which is the immediate cause for temporarily
  disabling it.
2001-05-18 00:08:38 +00:00
Jonathan Lemon
2e2b823898 Add workaround for embedded NICs, in particular, the 815E boards.
There appears to be a bug where the chip will lock up when running
in 10Mb/s mode.
2001-05-17 23:50:24 +00:00
John Baldwin
1c58e4e550 During the code to pick a process to kill when memory is exhausted, keep
the process in question locked as soon as we find it and determine it to
be eligible until we actually kill it.  To avoid deadlock, we don't block
on the process lock but skip any process that is already locked during our
search.
2001-05-17 22:49:03 +00:00
John Baldwin
1ad5401134 - Don't panic on a try lock operation for a sleep lock if we hold a spin
lock.  Since we won't actually block on a try lock operation, it's not
  a problem.  Add a comment explaining why it is safe to skip lock order
  checking with try locks.
- Remove the ithread list lock spin lock from the order list.
2001-05-17 22:44:56 +00:00
John Baldwin
4d29cb2db9 - Remove the global ithread_list_lock spin lock in favor of per-ithread
sleep locks.
- Delay returning from ithread_remove_handler() until we are certain that
  the interrupt handler being removed has in fact been removed from the
  ithread.
- XXX: There is still a problem in that nothing protects the kernel from
  adding a new handler while the ithread is running, though with our
  current architectures this is not a problem.

Requested by:	gibbs (2)
2001-05-17 22:43:26 +00:00
John Baldwin
7a08bae6ec - Move the setting of bootverbose to a MI SI_SUB_TUNABLES SYSINIT.
- Attach a writable sysctl to bootverbose (debug.bootverbose) so it can be
  toggled after boot.
- Move the printf of the version string to a SI_SUB_COPYRIGHT SYSINIT just
  afer the display of the copyright message instead of doing it by hand in
  three MD places.
2001-05-17 22:28:46 +00:00
John Baldwin
8b7fa31d30 Use NHWI instead of APIC_IMEN_BITS. 2001-05-17 22:24:46 +00:00
John Baldwin
ddfbf9d259 - Axe the IMEN_BITS and APIC_IMEN_BITS constants.
- Add back in a definition of NHWI which is preferred over ICU_LEN.

Submitted by:	bde
2001-05-17 22:24:17 +00:00
Duncan Barclay
60453b06de Primary purpose of this commit is to enable support for the Aviator
Pro and Raylink cards with version 5 firmware. Only infra-structure
mode has been tested. Specific changes for this feature are:

        o Add RFC1042 encapsulation of IP datagrams

        o Add authentication and association

        o Decode of the beacon (although not used)

Other changes have been made:

        o Pass command completion status to *_done (in place for
          adding proper error recovery)

	o Move a couple of state variables into the current
	  network parameters structure. This is in prep. for
	  dealing with roaming.

MFC after:	1 week
2001-05-17 22:23:49 +00:00
John Baldwin
8107ed2eda Disable the wi driver locking for now. The driver tries to tsleep with the
driver lock held on detach which can lead to annoying and useless panics.
2001-05-17 22:20:54 +00:00
Robert Watson
6bd1912df4 o Modify access control checks in p_candebug() such that the policy is as
follows: the effective uid of p1 (subject) must equal the real, saved,
  and effective uids of p2 (object), p2 must not have undergone a
  credential downgrade.  A subject with appropriate privilege may override
  these protections.

  In the future, we will extend these checks to require that p1 effective
  group membership must be a superset of p2 effective group membership.

Obtained from:	TrustedBSD Project
2001-05-17 21:48:44 +00:00
Duncan Barclay
d22e5c3d89 Add a couple more codes for upcoming raylink driver additions.
MFC after:	3 days
2001-05-17 21:37:41 +00:00
Alfred Perlstein
0fd061c0c4 Cleanup
Remove comment about setting error for reads on EOF, read returns 0 on
EOF so the code should be ok.

Remove non-effective priority boost, PRIO+1 doesn't do anything
(according to McKusick), if a real priority boost is needed it should
have been +4.

Style fixes:
.) return foo -> return (foo)
.) FLAG1|FlAG2 -> FLAG1 | FlAG2
.) wrap long lines
.) unwrap short lines
.) for(i=0;i=foo;i++) -> for (i = 0; i=foo; i++)
.) remove braces for some conditionals with a single statement
.) fix continuation lines.

md5 couldn't verify the binary because some code had to
be shuffled around to address the style issues.
2001-05-17 19:47:09 +00:00
Alfred Perlstein
2deb4a20c3 initialize pipe pointers 2001-05-17 18:22:58 +00:00
Alfred Perlstein
82a283fcf3 pipe_create has to zero out the select record earlier to avoid
returning a half-initialized pipe and causing pipeclose() to follow
a junk pointer.

Discovered by: "Nick S" <snicko@noid.org>
2001-05-17 17:59:28 +00:00
Ruslan Ermilov
268511689c Cosmetics to rev.1.89: removed argument names in a function prototype. 2001-05-17 17:57:35 +00:00
Bruce Evans
4b8db4a299 Backed out rev.1.8. Rev.1.8 was just to support a bogus unused include
in ng_tty.c.
2001-05-17 11:54:30 +00:00
Søren Schmidt
2c68839222 Update to use the changed ioctl interface. 2001-05-17 10:29:30 +00:00
Søren Schmidt
ec0801f189 Change the ioctl interface to prepare for new functionality. 2001-05-17 10:28:59 +00:00