Commit Graph

3138 Commits

Author SHA1 Message Date
Neil Blakey-Milner
445572c1ed Add 'kern.disks', a sysctl which returns the list of disks from
disk_enumerate(), space delimited.  This allows non-root users to get a
list of disks and will simplify libdisk's Disk_Names().

Reviewed by:	phk
2000-06-22 11:44:43 +00:00
Alfred Perlstein
a79b71281c return of the accept filter part II
accept filters are now loadable as well as able to be compiled into
the kernel.

two accept filters are provided, one that returns sockets when data
arrives the other when an http request is completed (doesn't work
with 0.9 requests)

Reviewed by: jmg
2000-06-20 01:09:23 +00:00
Alfred Perlstein
a72fda7154 backout accept optimizations.
Requested by: jmg, dcs, jdp, nate
2000-06-18 08:49:13 +00:00
Poul-Henning Kamp
7c50d77218 Revert part of my bioops change which implemented panic(8). 2000-06-16 14:32:13 +00:00
Poul-Henning Kamp
a2e7a027a7 Virtualizes & untangles the bioops operations vector.
Ref: Message-ID: <18317.961014572@critter.freebsd.dk> To: current@
2000-06-16 08:48:51 +00:00
Robert Watson
625cc84808 Second of two commits adding capability manipulation syscalls for
processes.

Obtained from:	TrustedBSD Project
2000-06-15 23:27:18 +00:00
Robert Watson
b09b66abf6 Introduce syscalls for process capability manipulation. Currently backs
onto already committed stubs.  Commit one of two.

Reviewed by:	Damned if I can remember.  Many people.
Obtained from:	TrustedBSD Project
2000-06-15 23:08:17 +00:00
Poul-Henning Kamp
4bd02a5609 Add disk_enumerate() for finding names of disks. Vinum and libh will
need this RSN.

Remove a pointless warning in the root device locating code.

Remove the "wd" compatibility name from the "ad" driver.

WARNING: If you have not updated to use /dev/wd* in your /etc/fstab
and modern bootblocks, it would be a very good idea to do so BEFORE
you upgrade your kernel.
2000-06-15 20:30:53 +00:00
Alfred Perlstein
8f4e4aa5f1 add socketoptions DELAYACCEPT and HTTPACCEPT which will not allow an accept()
until the incoming connection has either data waiting or what looks like a
HTTP request header already in the socketbuffer.  This ought to reduce
the context switch time and overhead for processing requests.

The initial idea and code for HTTPACCEPT came from Yahoo engineers and has
been cleaned up and a more lightweight DELAYACCEPT for non-http servers
has been added

Reviewed by: silence on hackers.
2000-06-15 18:18:43 +00:00
Peter Wemm
7d02379e48 As a bit of a gross hack, allow earlier access to both the static and
dynamic hints.  This allows the resource_XXX_value() calls to work
before malloc() has started.  This gets the serial console working as well
as a few other things.
2000-06-15 09:57:20 +00:00
Peter Wemm
690f8fc4c3 Fix a stray debug output. change if (1 || bootverbose) to if (bootverbose) 2000-06-15 04:12:17 +00:00
Bruce Evans
8e8cac5555 sys/malloc.h:
Order the SYSINIT() for MALLOC_DEFINE() correctly so that malloc()
doesn't have to waste time initializing itself.  The
(SI_SUB_KMEM, SI_ORDER_ANY) order was shared with syscons' SYSINIT()
for scmeminit(), and scmeminit() calls malloc(), so malloc()
initialization was not always complete on the first call to malloc().

kern/kern_malloc.c:
- Removed self-initialization in malloc().
- Removed half-baked sanity check in free().  Trust MALLOC_DEFINE().
2000-06-14 18:31:42 +00:00
Peter Wemm
f71c01cc52 Borrow phk's axe and apply the next stage of config(8)'s evolution.
Use Warner Losh's "hint" driver to decode ascii strings to fill the
resource table at boot time.

config(8) no longer generates an ioconf.c table - ie: the configuration
no longer has to be compiled into the kernel.  You can reconfigure your
isa devices with the likes of this at loader(8) time:
  set hint.ed.0.port=0x320

userconfig will be rewritten to use this style interface one day and will
move to /boot/userconfig.4th or something like that.

It is still possible to statically compile in a set of hints into a kernel
if you do not wish to use loader(8).  See the "hints" directive in GENERIC
as an example.

All device wiring has been moved out of config(8).  There is a set of
helper scripts (see i386/conf/gethints.pl, and the same for alpha and pc98)
that extract the 'at isa? port foo irq bar' from the old files and produces
a hints file.  If you install this file as /boot/device.hints (and update
/boot/defaults/loader.conf - You can do a build/install in sys/boot) then
loader will load it automatically for you.  You can also compile in the
hints directly with:  hints "device.hints"  as well.

There are a few things that I'm not too happy with yet.  Under this scheme,
things like LINT would no longer be useful as "documentation" of settings.
I have renamed this file to 'NOTES' and stored the example hints strings
in it.  However... this is not something that config(8) understands, so
there is a script that extracts the build-specific data from the
documentation file (NOTES) to produce a LINT that can be config'ed and
built.  A stack of man4 pages will need updating. :-/

Also, since there is no longer a difference between 'device' and
'pseudo-device' I collapsed the two together, and the resulting 'device'
takes a 'number of units' for devices that still have it statically
allocated.  eg:  'device fe 4' will compile the fe driver with NFE set
to 4.  You can then set hints for 4 units (0 - 3).  Also note that
'device fe0' will be interpreted as "zero units of 'fe'" which would be
bad, so there is a config warning for this.  This is only needed for
old drivers that still have static limits on numbers of units.
All the statically limited drivers that I could find were marked.

Please exercise EXTREME CAUTION when transitioning!

Moral support by: phk, msmith, dfr, asmodai, imp, and others
2000-06-13 22:28:50 +00:00
Jeroen Ruigrok van der Werven
3b43fd626a Fix panic by moving the prp == 0 check up the order of sanity checks.
Submitted by:	Bart Thate <freebsd@1st.dudi.org> on -current
Approved by:	rwatson
2000-06-13 15:44:04 +00:00
Alfred Perlstein
8757e5bbc5 unstatic getfp() so that other subsystems can use it.
make sendfile() use it.

Approved by: dg
2000-06-12 18:06:12 +00:00
Bruce Evans
0477138dad Fixed allocation of unit numbers. Allocate the amount of space actually
required (rounded up a little) instead of twice the previous amount (or
a fixed amount for the first allocation).

The bug caused memory corruption when a new unit number for a devclass
was more than about twice the previous maximum one (or more than 3 for
the first one), so it corrupted memory (which happened to be the atkbdc
port resource list) in the reporter's configuration with sio unit
numbers { 0, 25, 1, 2, ... }.

Reviewed by:	dfr
Reported by:	Leonid Lukiyanets <stalwar78@hotmail.com>
2000-06-11 07:19:20 +00:00
Poul-Henning Kamp
c27f4d3c50 fix a typo 2000-06-10 19:21:20 +00:00
Peter Wemm
53cc6add2a Unused include: #include "pty.h" 2000-06-10 07:12:40 +00:00
Jonathan Lemon
d36cb22369 malloc(..., M_WAITOK) will not return NULL, so remove the error
handling for this case (which was slightly broken anyway)

Fix up some whitespace problems while I'm here too.

Submitted by:  alfred   (in a slightly different form)
2000-06-10 01:51:18 +00:00
Robert Watson
e812e4917d Dammit.
Trimmed an extra sysctl when I moved kern.suser_permitted from kern_mib.c
to kern_prot.c.  This commit should restore it, as well as fix the
resulting build problems.

Submitted by:	asmodai
2000-06-07 18:54:41 +00:00
Robert Watson
a996141f6e Introduce additional POSIX.1e-related stubs
o options CAPABILITIES
o kern/kern_cap.c -- syscall stubs returning ENOSYS

syscalls.master changes to follow

Obtained from:	TrustedBSD Project
2000-06-07 04:53:49 +00:00
Robert Watson
579f4eb4cd o bde suggested moving the SYSCTL from kern_mib to the more appropriate
kern_prot, which cleans up some namespace issues
o Don't need a special handler to limit un-setting, as suser is used to
  protect suser_permitted, making it one-way by definition.

Suggested by:	bde
2000-06-05 18:30:55 +00:00
Robert Watson
0309554711 o Introduce kern.suser_permitted, a sysctl that disables the suser_xxx()
returning anything but EPERM.
o suser is enabled by default; once disabled, cannot be reenabled
o To be used in alternative security models where uid0 does not connote
  additional privileges
o Should be noted that uid0 still has some additional powers as it
  owns many important files and executables, so suffers from the same
  fundamental security flaws as securelevels.  This is fixed with
  MAC integrity protection code (in progress)
o Not safe for consumption unless you are *really* sure you don't want
  things like shutdown to work, et al :-)

Obtained from:	TrustedBSD Project
2000-06-05 14:53:55 +00:00
Robert Watson
7cadc2663e o Modify jail to limit creation of sockets to UNIX domain sockets,
TCP/IP (v4) sockets, and routing sockets.  Previously, interaction
  with IPv6 was not well-defined, and might be inappropriate for some
  environments.  Similarly, sysctl MIB entries providing interface
  information also give out only addresses from those protocol domains.

  For the time being, this functionality is enabled by default, and
  toggleable using the sysctl variable jail.socket_unixiproute_only.
  In the future, protocol domains will be able to determine whether or
  not they are ``jail aware''.

o Further limitations on process use of getpriority() and setpriority()
  by jailed processes.  Addresses problem described in kern/17878.

Reviewed by:	phk, jmg
2000-06-04 04:28:31 +00:00
Bruce Evans
f47f0edde4 Use "nm | awk ..." instead of genassym(1) to generate symbol value headers.
Symbol values are now represented using array sizes (4 arrays per symbol
so that 16-bit machines can represent 64-bit values) instead of being raw
binary values.

Reviewed by:	marcel
2000-06-02 09:27:48 +00:00
Mike Smith
c3c50c4e3a Further fixes for multiple-IO-APIC systems from Tor Egge:
Further experimentation showed that some Dell 2450 machines with the
prevention kludge installed still got T_RESERVED traps.  CPU interrupt
vector 0x7A was observed to be triggered.  This might have been the
bitwise OR of two different vectors sent from each of the IOAPICs at
the same time.

	IOAPIC #0: 0x68 --> irq 8: RTC timer interrupt
	IOAPIC #1: 0x32 --> irq 18: scsi host adapter or network interface
		   ----
		   0x7a --> T_RESERVED

Both IOAPICs had ID 0.

Appendix B.3 in the MP spec indicates that the operating system is
responsible for assigning unique IDs to the IOAPICs.

The enclosed patch programs the IOAPIC IDs according to the IOAPIC
entries in the MP table.

Submitted by:	tegge
2000-05-31 21:37:28 +00:00
Matthew Dillon
8b03c8ed5e This is a cleanup patch to Peter's new OBJT_PHYS VM object type
and sysv shared memory support for it.  It implements a new
    PG_UNMANAGED flag that has slightly different characteristics
    from PG_FICTICIOUS.

    A new sysctl, kern.ipc.shm_use_phys has been added to enable the
    use of physically-backed sysv shared memory rather then swap-backed.
    Physically backed shm segments are not tracked with PV entries,
    allowing programs which use a large shm segment as a rendezvous
    point to operate without eating an insane amount of KVM in the
    PV entry management.  Read: Oracle.

    Peter's OBJT_PHYS object will also allow us to eventually implement
    page-table sharing and/or 4MB physical page support for such segments.
    We're half way there.
2000-05-29 22:40:54 +00:00
Doug Rabson
ca2e05343b Add taskqueue system for easy-to-use SWIs among other things.
Reviewed by: arch
2000-05-28 15:45:30 +00:00
Søren Schmidt
d5f65fcbd7 If devclass_alloc_unit() is called with a wired unit #, and this is
buzy, only search upwards for a free slot to use..

This broke unit numbering on ATA systems where PCI attached controllers
come before the mainboard ones...

Reviewed by: dfr
2000-05-26 13:59:05 +00:00
Jake Burkholder
e39756439c Back out the previous change to the queue(3) interface.
It was not discussed and should probably not happen.

Requested by:		msmith and others
2000-05-26 02:09:24 +00:00
Jake Burkholder
740a1973a6 Change the way that the queue(3) structures are declared; don't assume that
the type argument to *_HEAD and *_ENTRY is a struct.

Suggested by:	phk
Reviewed by:	phk
Approved by:	mdodd
2000-05-23 20:41:01 +00:00
Mike Smith
b38f58db69 Make a trip to Pointy-Hats-R-Us and actually include the header that
defines ROOTDEVNAME.

Submitted by:	"Jeffrey S. Sharp" <jss@subatomix.com>
2000-05-22 17:25:47 +00:00
David E. O'Brien
d4af7a50dc Sort the sys includes. 2000-05-22 17:09:13 +00:00
Brian Feldman
a274d19ba2 Back out NOTE_EXIT status reporting pending discussion. 2000-05-21 16:27:41 +00:00
Peter Wemm
24488c7498 Provide a temporary undocumented option: SHM_PHYS_BACKED. This will
become sysctl and/or flags controlled later.  It's mainly here for an
easy place to test the physical memory backed objects.
2000-05-21 13:52:13 +00:00
Brian Feldman
a24b514d72 Put the wait(2) exit status in "data" for NOTE_EXIT kevents. 2000-05-17 01:16:11 +00:00
Jeroen Ruigrok van der Werven
01f76720fb Fix the rootmount code for now.
This function will probably rewritten/renamed to devpp.

Submitted by:	Assar Westerlund <assar@sics.se> on -current
Confirmed to work:	Steinar Haug <sthaug@nethelp.no>,
			Manfred Antar <mantar@pacbell.net>
Reviewed by:	phk
2000-05-14 07:43:12 +00:00
Jeroen Ruigrok van der Werven
37d90a44af Fix comment typo.
Submitted by:	nrahlstr
2000-05-12 16:06:49 +00:00
Chris Costello
040fac0bbd Include the UID and GID values filled in by socreate() into socket->so_cred
for stat() calls.

Reviewed by:	phk
2000-05-11 22:08:57 +00:00
Chris Costello
12861d58db Include UID and GID information for stat() calls using the values filled
into the file descriptor data by falloc().

Reviewed by:	phk
2000-05-11 22:08:20 +00:00
Bruce Evans
9114579d7a Regenerated (fixed the calculation of sy_nargs in sysent tables). 2000-05-09 21:52:02 +00:00
Bruce Evans
6b972e0bdd Fixed the calculation of sy_nargs in sysent tables. We attempted to do
this in awk using the hack of counting args of type off_t twice and args
of all other types once.  This is too simple to work.  It gave benignly
wrong results on alphas (off_t shouldn't be counted twice) and for
svr4_sys_mmap64() on i386's (off64_t should be counted twice).  It gave
fatally wrong results for i386's with 64-bit longs (longs should be
counted twice).  The correct value for sy_nargs is easier to determine
from the size of the args struct anyway, except for complications to
make the generated code almost readable.

Improved formatting of sysent tables by lining up the comments where
possible.
2000-05-09 21:18:30 +00:00
Poul-Henning Kamp
192c06ea1b Change the "bdev-whiner" to whine when open is attempted and extend
the deadline a month.
2000-05-09 18:53:57 +00:00
Matthew Dillon
d2ba455c2c Some ioctl routines assume that the ioctl buffer is aligned, but a
char[] declaration makes no such guarentee.  A union is used to force
    alignment of the char buffer.
2000-05-09 17:43:21 +00:00
Bruce Evans
4aee570d90 Regenerated (fixed the type of mmap()'s padding arg). 2000-05-09 08:35:51 +00:00
Bruce Evans
aa4b7eae22 Fixed the declaration of mmap(). The crufty padding arg had the wrong
type.  This gave an inconsistent amount of crufty padding on i386's with
64-bit longs (8 bytes instead of 4).  On alphas it gives a consistent
amount of crufty padding (8 bytes) in addition to the 4 bytes of normal
padding caused by passing int args as register_t's.

Fixed the args struct tag for the NOPROTO syscalls (netbsd_lchown() and
netbsd_msync()).  The tag is currently unused for NOPROTO syscalls, so
the bug has no effect, but it will be used even in the NOPROTO case to
calculate sy_nargs correctly.
2000-05-09 08:31:06 +00:00
Peter Wemm
0e59fec6d8 Make issetugid return correctly. It was returning -1 with
errno == 1 if it was set?id!

Submitted by:	 Valentin Nechayev <netch@segfault.kiev.ua>
2000-05-09 00:58:34 +00:00
Greg Lehey
72cc7e2dce Correct a couple of typos. 2000-05-07 05:09:45 +00:00
Poul-Henning Kamp
ad7ba3d455 Remove devstat_end_transaction_buf() everybody uses
devstat_end_transaction_bio() now.
2000-05-06 06:59:08 +00:00
Poul-Henning Kamp
9626b608de Separate the struct bio related stuff out of <sys/buf.h> into
<sys/bio.h>.

<sys/bio.h> is now a prerequisite for <sys/buf.h> but it shall
not be made a nested include according to bdes teachings on the
subject of nested includes.

Diskdrivers and similar stuff below specfs::strategy() should no
longer need to include <sys/buf.> unless they need caching of data.

Still a few bogus uses of struct buf to track down.

Repocopy by:    peter
2000-05-05 09:59:14 +00:00
Jonathan Lemon
b4b03426ca Fix one bug where the kn_head list could be manipulated without
spl() protection in the case of a copyout error.

Add missing spl calls around the intial activation call that is
done when when the kevent is added.

Add two KASSERT macros to help catch errors in the future.
2000-05-04 20:19:17 +00:00
Paul Richards
8651b9ec1b If BUS_DEBUG is defined then create a sysctl, debug.bus_debug, that
is used to control whether the debug messages are output at runtime.
It defaults to on so that if you define BUS_DEBUG in your kernel
then you get all the debugging info when you boot.

It's very useful for disabling all the debugging info when you're
developing a loadable device driver and you're doing lots of loads
and unloads but don't always want to see all the debugging info.
2000-05-03 17:45:04 +00:00
Paul Richards
c0151c49d2 Replace all the ifdef debugging spaghetti with a single ifdef and
a macro so that it is easier to read the flow of the code.
2000-05-03 00:20:36 +00:00
Peter Wemm
365c5db0a7 Add $FreeBSD$ 2000-05-01 20:32:07 +00:00
Poul-Henning Kamp
017ef345bc Give struct bio it's own call back mechanism. 2000-05-01 13:36:25 +00:00
Peter Wemm
ab063af911 Move the MSG* and SEM* options to opt_sysvipc.h
Remove evil allocation macros from machdep.c (why was that there???) and
use malloc() instead.
Move paramters out of param.h and into the code itself.
Move a bunch of internal definitions from public sys/*.h headers (without
#ifdef _KERNEL even) into the code itself.

I had hoped to make some of this more dynamic, but the cost of doing
wakeups on all sleeping processes on old arrays was too frightening.
The other possibility is to initialize on the first use, and allow
dynamic sysctl changes to parameters right until that point. That would
allow /etc/rc.sysctl to change SEM* and MSG* defaults as we presently
do with SHM*, but without the nightmare of changing a running system.
2000-05-01 13:33:56 +00:00
Peter Wemm
2553c04ce2 Regenerate (removed semconfig) 2000-05-01 11:14:08 +00:00
Peter Wemm
b423446cc0 Remove the undocumented, flawed, broken-as-designed semconfig() syscall. 2000-05-01 11:13:41 +00:00
Peter Wemm
39e4c0c888 Remove undocumented broken-as-designed semconfig() syscall. 2000-05-01 11:11:44 +00:00
Andrey A. Chernov
051f60b976 Move t_timeout initializing to ttyregister
Pointed-by: bde
2000-05-01 10:51:54 +00:00
Doug Rabson
4b4a49fda5 * Move the driver_t::refs field to kobj_t to replace kobj_t::instances.
* Back out a couple of workarounds for the confusion between
  kobj_t::instances and driver_t::refs.
2000-05-01 10:45:15 +00:00
Andrey A. Chernov
ef4de1ad38 Since ptys are allocated dynamically, there is no needs to keep their
t_timeout across close, so move t_timeout initializing to ptcopen
2000-05-01 10:24:21 +00:00
Andrey A. Chernov
4eaed34ba0 Set t_timeout to its default sysctl value only once in ttyopen
Initialize t_timeout to -1 for this reason

Pointed-by: bde
2000-05-01 09:05:03 +00:00
Poul-Henning Kamp
2c9b67a8df Remove unneeded #include <vm/vm_zone.h>
Generated by:	src/tools/tools/kerninclude
2000-04-30 18:52:11 +00:00
Brian Feldman
226f14bc83 Change the scheduler to actually respect the PUSER barrier. It's been
wrong for many years that negative niceness would lower the priority
of a process below PUSER, and once below PUSER, there were conditionals
in the code that are required to test for whether a process was in
the kernel which would break.

The breakage could (and did) cause lock-ups, basically nothing else
but the least nice program being able to run in some conditions.  The
algorithm which adjusts the priority now subtracts PRIO_MIN to do
things properly, and the ESTCPULIM() algorithm was updated to use
PRIO_TOTAL (PRIO_MAX - PRIO_MIN) to calculate the estcpu.

NICE_WEIGHT is now 1 to accomodate the full range of priorities better
(a -20 process with full CPU time has the priority of a +0 process with
no CPU time).  There are now 20 queues (exactly; 80 priorities) for
use in user processes' scheduling, and PUSER has been lowered to 48
to accomplish this.

This means, to the user, that things will be scheduled more correctly
(noticeable), there is no lock-up anymore WRT a niced -20 process
never releasing the CPU time for other processes.  In this fair system,
tsleep()ed < PUSER processes now will get the proper higher priority
than priority >= PUSER user processes.

The detective work of this was done by me, along with part of the
solution.  Luoqi Chen has provided most of the solution, and really
helped me understand what was happening better, to boot :)

Submitted by:   luoqi
Concept reviewed by:    bde
2000-04-30 18:33:43 +00:00
Andrey A. Chernov
c1d0c3a89d Add sysctl variable to set initial drainwait timeout on ttyopen, default to
5 minutes
2000-04-30 16:00:53 +00:00
Poul-Henning Kamp
95bdaa0ee8 Hmm, diff/patch still doesn't like me.
Missed one s/biowait/bufwait/g
2000-04-30 06:16:03 +00:00
Poul-Henning Kamp
87150cb06d s/biowait/bufwait/g
Prodded by: several.
2000-04-29 16:25:22 +00:00
Poul-Henning Kamp
c1462ad325 Remove a leftover dysonism. 2000-04-29 16:14:10 +00:00
Poul-Henning Kamp
eb95c536ad Remove unneeded #include <sys/kernel.h> 2000-04-29 15:36:14 +00:00
Peter Wemm
eb2d8c2e8a The newer module dependency code exposes an apparent bug in the
bus/driver/kobj system.  I am not 100% sure that this is the correct fix,
but it is harmless and does seem to solve the problem.  At worst, it could
cause a tiny memory leak at unload time - this is better than a free(NULL)
and subsequent panic.  I'm waiting for comments from Doug about this.
This may yet be backed out and fixed differently.

The change itself is to increment the reference count on drivers in one
case where it appears to have been missed.  When everything is unloaded,
kobj_class_free() was being called twice in some cases, and panicing the
second time.
2000-04-29 13:24:35 +00:00
Peter Wemm
54823af256 First round implementation of a fine grain enhanced module to module
version dependency system.  This isn't quite finished, but it is at a
useful stage to do a functional checkpoint.

Highlights:
- version and dependency metadata is gathered via linker sets, so things
are handled the same for static kernels and code built to live in a kld.
- The dependencies are at module level (versus at file level).
- Dependencies determine kld symbol search order - this means that you
cannot link against symbols in another file unless you depend on it. This
is so that you cannot accidently unload the target out from underneath
the ones referencing it.
- It is flexible enough that we can put tags in #include files and macros
so that we can get decent hooks for enforcing recompiles on incompatable
ABI changes.  eg: if we change struct proc, we could force a recompile
for all kld's that reference the proc struct.
- Tangled dependency references at boot time are sorted.  Files are
relocated once all their dependencies are already relocated.

Caveats:
- Loader support is incomplete, but has been worked on seperately.
- Actual enforcement of the version number tags is not active yet - just
the module dependencies are live.  The actual structure of versioning
hasn't been agreed on yet. (eg: major.minor, or whatever)
- There is some backwards compatability for old modules without metadata
but I'm not sure how good it is.

This is based on work originally done by Boris Popov (bp@freebsd.org),
but I'm not sure he'd recognize much of it now. Don't blame him. :-)
Also, ideas have been borrowed from Mike Smith.
2000-04-29 13:19:31 +00:00
Peter Wemm
7c3fdf6bbc Do not fault if curproc is null. 2000-04-29 11:32:15 +00:00
Peter Wemm
ef83592d2c Do not use uprintf() for link time error messages. This has unpleasant
consequences when it happens in the preload support, before curproc or
the tty system exist.
2000-04-29 11:21:44 +00:00
David E. O'Brien
b870c55839 Hookup /dev/[u]random on the Alpha. 2000-04-28 17:18:48 +00:00
Andrey A. Chernov
2cddfc0992 Add default 5min timeout for output drain to stop hanging on exit or in other
places when connection dropped
2000-04-27 20:14:21 +00:00
Matthew Dillon
d323ddf317 Fix #! script exec under linux emulation. If a script is exec'd from a
program running under linux emulation, the script binary is checked for
    in /compat/linux first.  Without this patch the wrong script binary
    (i.e. the FreeBSD binary) will be run instead of the linux binary.
    For example, #!/bin/sh, thus breaking out of linux compatibility mode.

    This solves a number of problems people have had installing linux
    software on FreeBSD boxes.
2000-04-26 20:58:40 +00:00
Brian Feldman
b7db19017b Move procfs_fullpath() to vfs_cache.c, with a rename to textvp_fullpath().
There's no excuse to have code in synthetic filestores that allows direct
references to the textvp anymore.

Feature requested by:	msmith
Feature agreed to by:	warner
Move requested by:	phk
Move agreed to by:	bde
2000-04-26 11:57:45 +00:00
Matt Jacob
94a0705727 Remove unused variable. 2000-04-26 00:20:01 +00:00
Poul-Henning Kamp
67f3c95cf9 Clone the {b|bio}_offset field, and make sure it is always initialized
in struct bio.  Eventually, bio_offset will probably obsolete the
bio_blkno and bio_pblkno fields.

Remove the special hack in atapi-cd.c to determine of bio_offset was valid.
2000-04-25 10:51:18 +00:00
David E. O'Brien
b0e56cde37 * Use sys/sys/random.h rather than a i386 specific one.
* There was nothing that should be machine dependant about
  i386/isa/random_machdep.c, so it is now sys/kern/kern_random.c.
2000-04-24 17:30:08 +00:00
Doug Rabson
326e27d81f * Rewrite to use kobj(9) instead of hard-coded function tables.
* Report link errors to stdout with uprintf() so that the user can see
  what went wrong (PR kern/9214).
* Add support code to allow module symbols to be loaded into GDB using
  the debugger's "sharedlibrary" command.
2000-04-24 17:08:04 +00:00
Garrett Wollman
4505fec89e Add $FreeBSD$.
Initialize the POSIX.1b sysconf information appropriately for
non-optional kernel functions.
2000-04-22 15:13:06 +00:00
Doug Rabson
0d484d4793 Make sure the driver's ops table has been initialised before calling
static methods.
2000-04-22 15:03:08 +00:00
Brian Feldman
8a2852b12f Move the declaration of "struct namecache" to vnode.h, as it can be useful
elsewhere.  Note, of course, that in an ideal world nothing should need
to see our VFS implementation :-/
2000-04-22 03:44:00 +00:00
Poul-Henning Kamp
3389ae9350 Remove ~25 unneeded #include <sys/conf.h>
Remove ~60 unneeded #include <sys/malloc.h>
2000-04-19 14:58:28 +00:00
Poul-Henning Kamp
ed6aff7387 Remove unneeded <sys/buf.h> includes.
Due to some interesting cpp tricks in lockmgr, the LINT kernel shrinks
by 924 bytes.
2000-04-18 15:15:39 +00:00
Poul-Henning Kamp
11f8a0ca77 Retire bufqdisksort(), all drivers use bioqdisksort now. 2000-04-18 13:25:19 +00:00
Poul-Henning Kamp
19583a8007 Don't declare common variables in include files:
move buftimelock til vfs_bio.c where it is initialized.
2000-04-18 11:21:28 +00:00
David E. O'Brien
c815a20cb2 Change our ELF binary branding to something more acceptable to the Binutils
maintainers.

After we established our branding method of writing upto 8 characters of
the OS name into the ELF header in the padding; the Binutils maintainers
and/or SCO (as USL) decided that instead the ELF header should grow two new
fields -- EI_OSABI and EI_ABIVERSION.  Each of these are an 8-bit unsigned
integer.  SCO has assigned official values for the EI_OSABI field.  In
addition to this, the Binutils maintainers and NetBSD decided that a better
ELF branding method was to include ABI information in a ".note" ELF
section.

With this set of changes, we will now create ELF binaries branded using
both "official" methods.  Due to the complexity of adding a section to a
binary, binaries branded with ``brandelf'' will only brand using the
EI_OSABI method.  Also due to the complexity of pulling a section out of an
ELF file vs. poking around in the ELF header, our image activator only
looks at the EI_OSABI header field.

Note that a new kernel can still properly load old binaries except for
Linux static binaries branded in our old method.

  *
  * For a short period of time, ``ld'' will also brand ELF binaries
  * using our old method.  This is so people can still use kernel.old
  * with a new world.  This support will be removed before 5.0-RELEASE,
  * and may not last anywhere upto the actual release.  My expiration
  * time for this is about 6mo.
  *
2000-04-18 02:39:26 +00:00
Doug Rabson
8cb3dda2df Fix LINT. 2000-04-17 08:09:43 +00:00
Warner Losh
d543f330aa Issue a detached message after detaching the device.
Not Objected to by: new-bus@
2000-04-17 04:30:48 +00:00
Jonathan Lemon
3ee12e4fe3 Add files that I forgot to `cvs add' on last commit. 2000-04-16 19:02:08 +00:00
Jonathan Lemon
cb679c385e Introduce kqueue() and kevent(), a kernel event notification facility. 2000-04-16 18:53:38 +00:00
Poul-Henning Kamp
8177437d85 Complete the bio/buf divorce for all code below devfs::strategy
Exceptions:
        Vinum untouched.  This means that it cannot be compiled.
        Greg Lehey is on the case.

        CCD not converted yet, casts to struct buf (still safe)

        atapi-cd casts to struct buf to examine B_PHYS
2000-04-15 05:54:02 +00:00
Doug Rabson
f7b7769172 * Factor out the object system from new-bus so that it can be used by
non-device code.
* Re-implement the method dispatch to improve efficiency. The new system
  takes about 40ns for a method dispatch on a 300Mhz PII which is only
  10ns slower than a direct function call on the same hardware.

This changes the new-bus ABI slightly so make sure you re-compile any
driver modules which you use.
2000-04-08 14:17:18 +00:00
Archie Cobbs
b76f24f759 Fix a bug where SIGIO was not being delivered to a process requesting
async I/O when a tty device became writable.

PR:		kern/8324
Submitted by:	Don Lewis <Don.Lewis@tsc.tdk.com>
2000-04-05 18:38:21 +00:00
Alfred Perlstein
6288517674 regenerate with MPSAFE from syscalls.master 2000-04-03 06:36:57 +00:00
Alfred Perlstein
c01df63183 Make makesyscalls.sh parse an optional field 'MPSAFE' that specifies
that a syscall does not want the BGL to be grabbed automatically.

Add the new MPSAFE flag to the syscalls that dillon has determined to
be MPSAFE.
2000-04-03 06:36:14 +00:00
Poul-Henning Kamp
282ac69ede Clone bio versions of certain bits of infrastructure:
devstat_end_transaction_bio()
        bioq_* versions of bufq_* incl bioqdisksort()
the corresponding "buf" versions will disappear when no longer used.

Move b_offset, b_data and b_bcount to struct bio.

Add BIO_FORMAT as a hack for fd.c etc.

We are now largely ready to start converting drivers to use struct
bio instead of struct buf.
2000-04-02 19:08:05 +00:00
Matthew Dillon
7c8fdcbd19 Make the sigprocmask() and geteuid() system calls MP SAFE. Expand
commentary for copyin/copyout to indicate that they are MP SAFE as
    well.

Reviewed by: msmith
2000-04-02 17:52:43 +00:00
Poul-Henning Kamp
c244d2de43 Move B_ERROR flag to b_ioflags and call it BIO_ERROR.
(Much of this done by script)

Move B_ORDERED flag to b_ioflags and call it BIO_ORDERED.

Move b_pblkno and b_iodone_chain to struct bio while we transition, they
will be obsoleted once bio structs chain/stack.

Add bio_queue field for struct bio aware disksort.

Address a lot of stylistic issues brought up by bde.
2000-04-02 15:24:56 +00:00
Poul-Henning Kamp
8c125869a9 Draw the outline of "struct bio".
Struct bio is the future carrier of I/O requests for "struct buf".
2000-04-02 09:26:51 +00:00
Matthew Dillon
e4649cfac3 Change the write-behind code to take more care when starting
async I/O's.  The sequential read heuristic has been extended to
    cover writes as well.  We continue to call cluster_write() normally,
    thus blocks in the file will still be reallocated for large (but still
    random) I/O's, but I/O will only be initiated for truely sequential
    writes.

    This solves a number of annoying situations, especially with DBM (hash
    method) writes, and also has the side effect of fixing a number of
    (stupid) benchmarks.

Reviewed-by: mckusick
2000-04-02 00:55:28 +00:00
Brian Feldman
76e90dbcc9 Unstaticize this driver. You can have as many snoop devices as you can
mknod :)

Clean things up a lot while I'm here.  A lot of KNF changes.
2000-04-02 00:35:37 +00:00
Warner Losh
ce73953a1e device_set_unit() DO NOT USE THIS. This was approved before 4.0
release for inclusion into the release, but bde talked me out of
committing the module that needs this until after the release.  It is
after the release now. :-)
2000-04-01 06:06:37 +00:00
Peter Wemm
a84e0a1cfe Remove #ifdef for sem_wakeup() - we just use wakeup(). 2000-03-30 11:35:25 +00:00
Peter Wemm
255108f385 Make sysv-style shared memory tuneable params fully runtime adjustable
via sysctl.  It's done pretty simply but it should be quite adequate.
Also move SHMMAXPGS from $machine/include/vmparam.h as the comments that
went with it were wrong... we don't allocate KVM space for the pages so
that comment is bogus..  The only practical limit is how much physical
ram you want to lock up as this stuff isn't paged out or swap backed.
2000-03-30 07:17:05 +00:00
Matthew Dillon
db6a426158 The SMP cleanup commit broke UP compiles. Make UP compiles work again. 2000-03-28 18:06:49 +00:00
Matthew Dillon
36e9f877df Commit major SMP cleanups and move the BGL (big giant lock) in the
syscall path inward.  A system call may select whether it needs the MP
    lock or not (the default being that it does need it).

    A great deal of conditional SMP code for various deadended experiments
    has been removed.  'cil' and 'cml' have been removed entirely, and the
    locking around the cpl has been removed.  The conditional
    separately-locked fast-interrupt code has been removed, meaning that
    interrupts must hold the CPL now (but they pretty much had to anyway).
    Another reason for doing this is that the original separate-lock for
    interrupts just doesn't apply to the interrupt thread mechanism being
    contemplated.

    Modifications to the cpl may now ONLY occur while holding the MP
    lock.  For example, if an otherwise MP safe syscall needs to mess with
    the cpl, it must hold the MP lock for the duration and must (as usual)
    save/restore the cpl in a nested fashion.

    This is precursor work for the real meat coming later: avoiding having
    to hold the MP lock for common syscalls and I/O's and interrupt threads.
    It is expected that the spl mechanisms and new interrupt threading
    mechanisms will be able to run in tandem, allowing a slow piecemeal
    transition to occur.

    This patch should result in a moderate performance improvement due to
    the considerable amount of code that has been removed from the critical
    path, especially the simplification of the spl*() calls.  The real
    performance gains will come later.

Approved by: jkh
Reviewed by: current, bde (exception.s)
Some work taken from: luoqi's patch
2000-03-28 07:16:37 +00:00
Matthew Dillon
7c58e473f5 Commit the buffer cache cleanup patch to 4.x and 5.x. This patch fixes a
fragmentation problem due to geteblk() reserving too much space for the
    buffer and imposes a larger granularity (16K) on KVA reservations for
    the buffer cache to avoid fragmentation issues.  The buffer cache size
    calculations have been redone to simplify them (fewer defines, better
    comments, less chance of running out of KVA).

    The geteblk() fix solves a performance problem that DG was able reproduce.

    This patch does not completely fix the KVA fragmentation problems, but
    it goes a long way

Mostly Reviewed by: bde and others
Approved by: jkh
2000-03-27 21:29:33 +00:00
Kris Kennaway
8c6ac5e5a5 Reword warning to make it clearer (I read it as "remove block devices created
before 2000-06-01" which is obviously not what was intended :-)
2000-03-25 21:10:20 +00:00
Matthew Dillon
f1924a54f8 Fix in-kernel infinite loop in pipe_write() when the reader goes away
at just the wrong time.
2000-03-24 00:47:37 +00:00
Poul-Henning Kamp
e004067750 Whine at users who still have block devices in /dev, give them until
june 1st to fix their system.
2000-03-21 19:25:56 +00:00
Paul Saab
e5a28db9f5 Add sysctl kern.coredump to enable/disable core dumps system wide. 2000-03-21 07:10:42 +00:00
Brian Feldman
16aae9cbc0 Split the logic of
static int setrootbyname(char *name);
out into
   dev_t getdiskbyname(char *name);

This makes it easy to create a new DDB command, which is the big reason
for the change.  You can now do the following in DDB:

Example rc.conf entry:
dumpdev="/dev/ad0s1b"   # Device name to crashdump to (if enabled).

db> show disk/ad0s1b
dev_t = 0xc0b7ea00
db> p *dumpdev
c0b7ea00
2000-03-20 16:28:35 +00:00
Poul-Henning Kamp
91266b96c4 Isolate the Timecounter internals in their own two files.
Make the public interface more systematically named.

Remove the alternate method, it doesn't do any good, only ruins performance.

Add counters to profile the usage of the 8 access functions.

Apply the beer-ware to my code.

The weird +/- counts are caused by two repocopies behind the scenes:
	kern/kern_clock.c -> kern/kern_tc.c
	sys/time.h -> sys/timetc.h
(thanks peter!)
2000-03-20 14:09:06 +00:00
Poul-Henning Kamp
ce6acbb664 diff, patch and cvs didn't like these three last time around, try again. 2000-03-20 12:34:21 +00:00
Poul-Henning Kamp
b99c307a21 Rename the existing BUF_STRATEGY() to DEV_STRATEGY()
substitute BUF_WRITE(foo) for VOP_BWRITE(foo->b_vp, foo)

substitute BUF_STRATEGY(foo) for VOP_STRATEGY(foo->b_vp, foo)

This patch is machine generated except for the ccd.c and buf.h parts.
2000-03-20 11:29:10 +00:00
Poul-Henning Kamp
21144e3bf1 Remove B_READ, B_WRITE and B_FREEBUF and replace them with a new
field in struct buf: b_iocmd.  The b_iocmd is enforced to have
exactly one bit set.

B_WRITE was bogusly defined as zero giving rise to obvious coding
mistakes.

Also eliminate the redundant struct buf flag B_CALL, it can just
as efficiently be done by comparing b_iodone to NULL.

Should you get a panic or drop into the debugger, complaining about
"b_iocmd", don't continue.  It is likely to write on your disk
where it should have been reading.

This change is a step in the direction towards a stackable BIO capability.

A lot of this patch were machine generated (Thanks to style(9) compliance!)

Vinum users:  Greg has not had time to test this yet, be careful.
2000-03-20 10:44:49 +00:00
Bill Fenner
95b2b777b5 Make sure to free the socket in soabort() if the protocol couldn't
free it (this could happen if the protocol already freed its part
 and we just kept the socket around to make sure accept(2) didn't block)
2000-03-18 08:56:56 +00:00
Chris Costello
b081a64afb In vn_isdisk(), check whether vp->v_rdev is NULL. If it is, then
return ENXIO (Device not configured).  Without this, vn_isdisk()
could (and did in the case of lstat() under fdesc) pass a NULL pointer
to devsw(), which caused a page fault.

Reviewed by:	alfred
2000-03-18 01:27:44 +00:00
Nick Hibma
846664235c Instead of using the next unit available, use the first unit available.
This avoids the unit number from going up indefinitely when
diconnecting and connecting 2 devices alternately.

Noticed by: nsayer (quite a while ago)

And stop calling DEVICE_NOMATCH at probe repeatedly. This stops the
message on the PCI VGA board from being printed when loading a PCI driver.
2000-03-16 09:32:59 +00:00
Poul-Henning Kamp
db5f635acc Eliminate the undocumented, experimental, non-delivering and highly
dangerous MAX_PERF option.
2000-03-16 08:51:55 +00:00
Jun Kuriyama
dc76063419 Print "previous type" correctly when INVARIANTS is defined.
Reviewed by:	current@FreeBSD.org
2000-03-14 14:58:04 +00:00
Bruce Evans
05ecdd7037 Don't try so hard to make the lower 16 bits of fsids unique. It tended
to recycle full fsids after only 16 mount/unmount's.  This is probably
too often for exported fsids.  Now we recycle the full fsids only
after 2^16 mount/ umount's and only ensure uniqueness in the lower 16
bits if there have been <= 256 calls to vfs_getnewfsid() since the
system started.
2000-03-14 14:19:49 +00:00
Brian S. Dean
56fc73ff9b In 'ipcperm()', only call 'suser()' if it is actually required.
Previously, it was being called whether it was needed or not and the
ASU flag was being set (as a side affect of calling 'suser()') in
cases where superuser privileges were not actually needed.  This was
all pointed out to me by Bruce Evans.

Reviewed by:	bde
2000-03-13 23:00:08 +00:00
Poul-Henning Kamp
7de472559c Remove unused 3rd argument from vsunlock() which abused B_WRITE. 2000-03-13 10:47:24 +00:00
Bruce Evans
61214975da Try harder to make the lower 16 bits of fsids unique. The vfs type
number was packed very wastefully, giving perfect non-uniqeness in
the lower 16 bits of fsids for filesystems with the same vfs type.
This made linux_stat() return perfectly non-unique (broken) 16-bit
st_dev's for nfs mount points, and effectively reduced mntid_base to
8 bits so that the vfs_getnewfsid() looped endlessly when there are
already 256 mounted filesystems with the required vfs type.

Approved by:	jkh
2000-03-12 14:23:21 +00:00
Alan Cox
af25d10c91 shmat: If VM_PROT_READ_IS_EXEC is defined and prot includes VM_PROT_READ,
VM_PROT_EXECUTE must be added to prot before calling vm_map_find.

Without this change, an mprotect on a shmat'ed region fails (when
it shouldn't).  This bug was reported Feb 28 by Brooks Davis
<brooks@one-eyed-alien.net> on -hackers.

Reviewed by:	bde
Approved by:	jkh
2000-03-10 09:11:24 +00:00
Yoshinobu Inoue
8692c02553 Enable SCM_RIGHTS on alpha. Allocate necessary buffer as conversion between
int and struct file *.

Approved by: jkh

Submitted by: brian
Reviewed by: bde, brian, peter
2000-03-09 15:15:27 +00:00
Bruce Evans
a4fcac54a1 Fixed a null pointer panic for dumpon(8) on a nonexistent device whose
driver uses the new disk layer.

Reviewed by:	phk
Approved by:	jkh
2000-03-09 12:40:41 +00:00
Yoshinobu Inoue
7d0d8dc306 CMSG_XXX macros alignment fixes to follow RFC2292.
Approved by: jkh

Submitted by: Partly from tech@openbsd
Reviewed by: itojun
2000-03-03 11:13:12 +00:00
Peter Dufault
6d9a8d3e8f I applied the wrong patch set. Back out anything associated
with the known bogus currtpriority.  This undoes the previous changes to
sys/i386/i386/trap.c, sys/alpha/alpha/trap.c, sys/sys/systm.h

Now we have the patch set approved by bde.

Approved by:	bde
2000-03-02 22:03:49 +00:00
Peter Dufault
383774c417 Patches that eliminate extra context switches in FIFO case.
Fixes p1003_1b regression test in the simple case of no RR and
FIFO processes competing.

Reviewed by:	jkh, bde
2000-03-02 16:20:07 +00:00
Brian S. Dean
e777d9c31a Fix a superuser credential check.
Reviewed by:	phk
Approved by:	jkh
2000-02-29 22:58:59 +00:00
Doug Rabson
1d9a6ae08b If a driver probe fails, unset it from the device. This fixes a problem
with certain multiport cards.

Approved by: jkh
2000-02-29 09:36:25 +00:00
Paul Saab
77ac690c97 Update a comment in elf_coredump to reflect that if you madvise
with MADV_NOCORE, its address space is also excluded from a core
file.

Pointed out by:	alc
2000-02-28 06:36:45 +00:00
Paul Saab
9730a5daab Add MAP_NOCORE to mmap(2), and MADV_NOCORE and MADV_CORE to madvise(2).
This
This feature allows you to specify if mmap'd data is included in
an application's corefile.

Change the type of eflags in struct vm_map_entry from u_char to
vm_eflags_t (an unsigned int).

Reviewed by:	dillon,jdp,alfred
Approved by:	jkh
2000-02-28 04:10:35 +00:00
Jordan K. Hubbard
8d0bf3d6f8 Add new oid, debug.boothowto. This allows userland apps to see
how the kernel was booted and perhaps do conditional things
based upon it (sysinstall, for example, will now turn Debug mode
on automatically if boot -v was done).

Submitted by:	msmith
Suggested by:	ulf
2000-02-25 11:43:08 +00:00
Yoshinobu Inoue
0b97e97cd2 Add length check to sbcreatecontrol().
Now this check is necessary because IPv6 source routing might use
  control data bigger than MLEN. (e.g. 16bytes IPv6 addr x 23 hops)
  Actually mbuf cluster should be used in uipc_socket.c:sbcreatecontrol()
  and uipc_syscalls.c:sockargs() when data size is bigger then MLEN,
  and such patches were already in KAME environment and have been
  confirmed to work well. I just forgot to merge them into 4.0, sorry.

  For safety, I'll postpone such patches until after 4.0 release.
  The effect of postponement is followings.
    -Ping6 source routing hops are limitted to around 6 or so.
    -If some apps do setsockopt IPV6_RTHDR and try to receive
     incoming IPv6 source routing info, it can't receive more
     than 6 hops source routing info.
     (But currently, no apps seems to be doing it.)

Approved by: jkh
2000-02-24 19:21:26 +00:00
Jason Evans
dd85920a4f Add the VFS_AIO config option and leave it off by default. Unless the
VFS_AIO option is specified, all aio-related syscalls return ENOSYS.

The aio code is very fragile right now, and is unsuitable for default
inclusion in a production shell box.

Approved by:	jkh
2000-02-23 07:44:25 +00:00
Brian S. Dean
de8050f9b8 Don't forget to reset the hardware debug registers when a process that
was using them exits.

Don't allow a user process to cause the kernel to take a TRCTRAP on a
user space address.

Reviewed by:	jlemon, sef
Approved by:	jkh
2000-02-20 20:51:23 +00:00
Peter Wemm
f082218c18 Fix select(2) for the Alpha. (!!) It was never returning true for
fd's in the range of 32-63, 96-127 etc.  The first problem was the
FD_*() macros were shifting a 32 bit integer "1" left by more than
32 bits.  The same problem happened in selscan().  ffs() also takes
an int argument and causes failure.  For cases where int == long
(ie: the usual case for x86, but not always as gcc can have long
being a 64 bit quantity) ffs() could be used.

Reported by:	Marian Stagarescu <marian@bile.skycache.com>
Reviewed by:	dfr, gallatin (sys/types.h only)
Approved by:	jkh
2000-02-20 13:36:26 +00:00
Søren Schmidt
a6e23e28c1 Hide the "devclass_alloc_unit: %s%d already exists, using next available..."
behind bootverbose

Approved by: jkh
2000-02-20 10:07:28 +00:00
Søren Schmidt
47351d2774 Update the ata driver to take more advantage of newbus, this
was needed to make attach/detach of devices work, which is
needed for the PCCARD support.
(PCCARD support is still not working though, more to come on that)

Support the CMD646 chip which is used on many alphas, sadly only
in WDMA2 mode, as the silicon is broken beyond belief for UDMA modes.

Lots of cosmetic fixes here and there.

Sorry for the size of this megapatchfromhell but it was not
possible otherwise...

newbus patches based on work from: dfr (Doug Rabson)
2000-02-18 20:57:33 +00:00
Mike Smith
bb328b87c1 Change the mountroot prompt to something that doesn't look at all like a
firmware prompt.  Several sleepy folk mistook the '>>>' for the SRM
prompt, which was never the desired idea.

Submitted by:	Andrew Gallatin <gallatin@cs.duke.edu>
Approved by:	jkh
2000-02-17 23:32:08 +00:00
Matthew Dillon
1f6889a1eb Fix null-pointer dereference crash when the system is intentionally
run out of KVM through a mmap()/fork() bomb that allocates hundreds
    of thousands of vm_map_entry structures.

    Add panic to make null-pointer dereference crash a little more verbose.

    Add a new sysctl, vm.max_proc_mmap, which specifies the maximum number
    of mmap()'d spaces (discrete vm_map_entry's in the process).  The value
    defaults to around 9000 for a 128MB machine.  The test is scaled for the
    number of processes sharing a vmspace (aka linux threads).  Setting
    the value to 0 disables the feature.

PR: kern/16573
Approved by: jkh
2000-02-16 21:11:33 +00:00
Joerg Wunsch
2c6610f343 Hide the boring `not probed (disabled)'' messages behind bootverbose'.
This unspams the boot messages, concentrating on the drivers that have
actually been probed.

This basically resurrects revision 1.106 from old /sys/i386/isa/isa.c.

Reviewed by:	jkh, dfr
2000-02-15 19:23:34 +00:00
Poul-Henning Kamp
693e27d473 Don't try to account for the partial quantum unless the process is
curproc.  This only makes any difference on SMP, where we used a
(potentially very bogus) switchtime from our own CPU to calculate
resource usage on another CPU.

This should remove some if not all calcru() related warnings on SMP.

Approved by:		jkh
2000-02-15 09:02:07 +00:00
Martin Cracauer
30de91e8b8 Allow comments in interpreter specification lines as in
#! /bin/sh # -*- perl -*-

This is simply "delete everything after the next '#', not counting the
first char in the line". No effort has been made to allow quoting,
backslash escaping or '#' in interpreter names.

The complies to POSIX 1003.2 in that Posix says the implementation is
free to choose whatever it likes.

PR:		bin/16393
2000-02-15 08:49:57 +00:00
Peter Wemm
194a0b6c97 Avoid a panic in __getcwd(2) when combined with umount -f. 2000-02-14 06:09:01 +00:00
Poul-Henning Kamp
f1220da49c Fix sign reversal in adjtime(2).
Approved by:	jkh
2000-02-13 10:56:32 +00:00
Robert Watson
83f1e257e0 Yet-another-update: rename ``kern.prison'' to a new sysctl root entry,
``jail'', and move the set_hostname_allowed sysctl there, as well as
fixing a bug in the sysctl that resulted in jails being over-limited
(preventing them from reading as well as writing the hostname).  Also,
correct some formatting issues, courtesy bde :-).

Reviewed by:	phk
Approved by:	jkh
2000-02-12 13:41:56 +00:00
Robert Watson
5bdee2c5d5 Fix sysctl namespace for jail: move the kern.jailcansethostname to
kern.prison.set_hostname_allowed, off of the kern.prison node.  Future
jail twiddles should be placed in this namespace.
2000-02-10 18:51:58 +00:00
Robert Watson
6c144e7521 Introduce a new sysctl, kern.jailcansethostname, which determines whether
or not a process in a jail, with privilege, may set the jail's hostname.
Defaults to 1, which permits this.  May be set to 0 by a process with
appropriate privilege outside of jail.  Preventing hostname renaming
from within a jail is currently required to make jails manageable, as they
a currently identifiable only by hostname using /proc, which may be
modified without this sysctl being set to 0.  This will be documented
in upcoming man commits.

Authorized by:	jkh, the ever-patient
2000-02-10 05:32:03 +00:00
Robert Watson
35a0a88fda Correct an oversight in jail() that allowed processes in jail to access
ptys in ways that might be unethical, especially towards processes not in
jail, or in other jails.

Submitted by:	phk
Reviewed by:	rwatson
Approved by:	jkh
2000-02-09 03:32:11 +00:00
Poul-Henning Kamp
9b6d9dba20 Also allow non-rot processes to setproctitle()
Submitted by:	Paul Saab <paul@mu.org>
Approved by:	jkh
2000-02-08 19:54:15 +00:00
Søren Schmidt
e8359a57de Do refcounting of open devices (more) correctly.
count_dev funtion by phk.
2000-02-07 23:05:40 +00:00
Robert Watson
b7a5f3ca1b Remove static qualifier from vgonel, as it is needed by the Arla folk
outside of vfs_subr.c.

Submitted by:	Assar Westerlund <assar@sics.se>
Reviewed by:	rwatson
Approved by:	jkh
2000-02-02 07:07:17 +00:00
Peter Wemm
d2b4236a60 Don't refer to TABLDISC in the comments here.
Submitted by:	bde
Approved by:	jkh
2000-01-30 10:14:13 +00:00
Peter Wemm
f7b79efbc1 Remove sys/tablet.h and kern/tty_tb.c (the old RS232 CAD-style tablet
support code).  It hasn't worked since at least October 1995, and probably
has never worked in the FreeBSD 2.0+ tree.  Obviously it's not a priority
to many folks.

Reviewed by:	phk, sos
2000-01-29 16:34:46 +00:00
Robert Watson
9a2b8fca80 This patch fixes a locking bug that can result in deadlock if
the codepath is followed.

From the PR:

  vclean calls vrele leading to deadlock (if usecount > 0)

  vclean() calls vrele() if v_usecount of the node was higher than one.
  But before calling it, it sets the VXLOCK flag, which will make
  vn_lock called from vrele dead-lock.

PR:		kern/15117
Submitted by:	Assar Westerlund <assar@stacken.kth.se>
Reviewed by:	rwatson
Obtained from:	NetBSD
2000-01-29 15:22:58 +00:00
Poul-Henning Kamp
1edde29e97 rename disk_delete() to disk_destroy(). 2000-01-28 20:49:43 +00:00
Brian Feldman
8950d24456 Fix a bug that could crash the system if you press ^T while a slower
system is slowed down and in the right spot (a race condition in fork()).

The "previous time" fields have moved from pstat to proc.  Anything which
uses KVM needs to be recompiled with a new libkvm/headers.

A couple wacky u_quad_t's in struct proc are now u_int64_t (the same, but
according to lack of 'quad's in proc.h and usage in kern_resource.c).
This will have no effect on code.

This has been make-world-and-installed-new-kernel-which-works-fine-tested.

Reviewed by:	bde (previous version)
2000-01-28 20:40:29 +00:00
Archie Cobbs
ee51b2c45f Back out previous commit; it was premature. 2000-01-28 17:11:07 +00:00
Bruce Evans
b473d62c73 Fixed a memory leak for slices with an (unsupported) bad sector table.
Broken in: rev.1.80.
2000-01-28 11:51:08 +00:00
Bruce Evans
7b17f8ffbd Don't permit generation of non-physical disk addresses.
subr_diskmbr.c:
Don't "helpfully" enlarge our idea of the disk size to cover all the
primary slices.  Instead, truncate or discard slices that don't seem
to be on the disk.  The enlargement was a hack for disks that don't
report their size (e.g., MFM disks).  It is just wrong in general.

wd.c:
In CHS mode, limit the disk size so that cylinder numbers >= 65536
cannot occur.  This normally only affects disks larger than 33.8GB.
CHS mode accesses to addresses above the limit are now properly broken
(an error is returned instead of garbage for reads and disk corruption
for writes).

PR:		15611
Reviewed by:	readers of freebsd-bugs did not respond to a request
            	for review
2000-01-28 10:22:07 +00:00
David Greenman
27b8623f21 Fixed sign and overflow bugs that caused the allocation size of the kernel
malloc region (kmem_map) to be wrong and semi-random on systems with more
than 1GB of RAM. This is not a complete fix, but is sufficient for
machines with 4GB or less of memory. A complete fix will require some
changes to the getenv stuff so that 64bit values can be passed around.

NOT FIXED: machines with more than 4GB of RAM (e.g. some large Alphas)
since we're still using ints to hold some of the values.

Reviewed by:	bde
2000-01-28 04:04:58 +00:00
Archie Cobbs
d6113ed044 When an attempt to install a line discipline fails, check for
known KLD's that might support it, and load the KLD if found.
Currently the list includes SLIPDISC, PPPDISC, and NETGRAPHDISC.
2000-01-28 02:22:22 +00:00
Bruce Evans
6bfb820292 Quick fix for stack overflow when there are more than about 25 slices.
Using recursion to traverse the recursive data structure for extended
partitions was never good, but when slice support was implemented in
1995, the recursion worked for the default maximum number of slices
(32), and standard fdisk utilities didn't support creating more than
the default number.  Even then, corrupt extended partitions could
cause endless recursion, because we attempt to check all slices, even
ones which we don't turn into devices.

The recursion has succumbed to creeping features.  The stack requirements
for each level had grown to 204 bytes on i386's.  Most of the growth was
caused by adding a 64-byte copy of the DOSpartition table to each frame.
The kernel stack size has shrunk to about 5K on i386's.  Most of the
shrinkage was caused by the growth of `struct sigacts' by 2388 bytes
to support 128 signals.

Linux fdisk (a 1997 version at least) can now create 60 slices (4 standard
ones, 56 for logical drives within extended partitions, and it seems to
be leaving room to map the 4 BSD partitions on my test drive), and Linux
(2.2.29 and 2.3.35 at least) now reports all these slices at boot time.

The fix limits the recursion to 16 levels (4 + 16 slices) and recovers
32 bytes per level caused by gcc pessimizing for space.  Switching to
a static buffer doesn't cause any problems due to recursion, since the
buffer is not passed down.  Using a static buffer is wrong in general
because it requires the giant lock to protect it.  However, this problem
is small compared with using a static buffer for dsname().  We sometimes
neglect to copy the result of dsname() before sleeping.

Also fixed slice names when we find more than MAX_SLICES (32) slices.
The number of the last slice found was not passed passed recursively.
The limit on the recursion now prevents finding more than 32 slices
with a standard extended partition data structure anyway.
2000-01-27 05:11:29 +00:00
Kirk McKusick
7881bb5d5f Add soft updates to the set of things being tagged. Syntax cleanup. 2000-01-27 01:22:06 +00:00
Bruce Evans
2f40e526a5 Improved English in the messages printed by diskerr().
Fixed some formatting bugs.
2000-01-26 10:28:23 +00:00
Bruce Evans
f4675a30ed Don't follow null pointers if we somehow have a null devswitch entry
despite having a non-null cn_tab entry.  This case now works the same
as if there is no physical console, except i/o at the kernel printf
level may still work.  This frees drivers of physical console drivers
from the responsibility of attaching the device no matter what.
2000-01-25 09:20:08 +00:00
Bruce Evans
dd7f8ecff6 Fixed some style bugs (mainly ones associated with the bogus name
condev_t for a non-typedef).
2000-01-24 11:48:11 +00:00
Boris Popov
8dc74b6288 Backout previous commit. It was a mistake. 2000-01-23 15:47:46 +00:00
Boris Popov
9e991dfa2f Replace non obvious number with SPECNAMELEN constant.
Reviewed by:	phk
2000-01-23 14:58:53 +00:00
Poul-Henning Kamp
7fd299cb92 Add a couple of strategic sysctls for monitoring.
In the rather obscure case of hardpps(), use a type-II PLL if the external
signal is phase locked, but a FLL if it isn't.
2000-01-23 14:52:37 +00:00
Warner Losh
27e2c03a27 Fix the style bugs in the style bugs fix. The style bug fix made the
new function inconsistant with the rest of this file.  The spelling
and grammer fixes were good and remain.
2000-01-21 06:57:52 +00:00
Brian Feldman
bd9079fa6c Fix style bugs in the last commit. 2000-01-21 02:52:54 +00:00
Warner Losh
7001be49f8 bdeize last commit:
o Remove opt_dontuse.h and ifdef PROCFS

Subitted by: bde, peter
2000-01-20 17:03:53 +00:00
Jason Evans
b7592c7bea Back out the previous spl change, since it opens a race window.
Reviewed by:	alfred, dillon, peter
2000-01-20 08:15:13 +00:00
Warner Losh
5e2664428c When we are execing a setugid program, and we have a procfs filesystem
file open in one of the special file descriptors (0, 1, or 2), close
it before completing the exec.

Submitted by: nergal@idea.avet.com.pl
Constructive comments: deraadt@openbsd.org, sef, peter, jkh
2000-01-20 07:12:52 +00:00
Jason Evans
60ffb01993 Don't tsleep() while at splbio().
Correctly return EINPROGRESS from aio_error() even when an aio request
is still in the socket queue.

Submitted by:	Adrian Chadd <adrian@bofh.co.uk>
2000-01-20 01:59:58 +00:00
Robert Watson
8f0738756c Fix bde'isms in acl/extattr syscall interface, renaming syscalls to
prettier (?) names, adding some const's around here, et al.

Reviewed by:	bde
2000-01-19 06:07:34 +00:00
Robert Watson
9b0be035b8 Fix bde'isms in acl/extattr syscall interface, renaming syscalls to
prettier (?) names, adding some const's around here, et al.

Commit 2 out of 3.

Reviewed by:	bde
2000-01-19 06:02:31 +00:00
Robert Watson
5134b3e92a Fix bde'isms in acl/extattr syscall interface, renaming syscalls to
prettier (?) names, adding some const's around here, et al.

Commit 1 out of 3.

Reviewed by:	bde
2000-01-19 06:01:07 +00:00
Kirk McKusick
71c87cfd7e Need to reset the buffer pointer to avoid reconsidering the same buffer
again (without this the rollback analysis was being lost). Should reduce
the write count for most workloads.

Submitted by:	Craig A Soules <soules+@andrew.cmu.edu>
2000-01-18 02:13:26 +00:00
Brian Feldman
f582ac0630 Fix vn_isdisk() usage to make AIO work on non-disk-files again, rather
than just return ENOTBLK.

PR:	16163
Submitted by:	Adrian Chadd <adrian@FreeBSD.org>
2000-01-17 21:18:39 +00:00
Peter Wemm
8ccd633455 Implement setres[ug]id() and getres[ug]id(). This has been sitting in
my tree for ages (~2 years) waiting for an excuse to commit it.  Now Linux
has implemented it and it seems that Staroffice (when using the
linux_base6.1 port's libc) calls this in the linux emulator and dies in
setup.  The Linux emulator can call these now.
2000-01-16 16:34:26 +00:00
Poul-Henning Kamp
2a277567e2 Cleanup some more remaining bdev fluff. 2000-01-16 09:25:34 +00:00
Jason Evans
bfbbc4aa44 Add aio_waitcomplete(). Make aio work correctly for socket descriptors.
Make gratuitous style(9) fixes (me, not the submitter) to make the aio
code more readable.

PR:		kern/12053
Submitted by:	Chris Sedore <cmsedore@maxwell.syr.edu>
2000-01-14 02:53:29 +00:00
Matthew N. Dodd
de9cfdd736 Allow SMP systems with an MCA bus to work properly.
Reviewed by:	peter
2000-01-13 09:09:02 +00:00
Luoqi Chen
49503b44fd Seconds to ticks conversion was done at the wrong place. 2000-01-12 17:26:42 +00:00
Kazutaka YOKOTA
35e61cbd71 Add a new mechanism, cndbctl(), to tell the console driver that
ddb is entered.  Don't refer to `in_Debugger' to see if we
are in the debugger.  (The variable used to be static in Debugger()
and wasn't updated if ddb is entered via traps and panic anyway.)

- Don't refer to `in_Debugger'.
- Add `db_active' to i386/i386/db_interface.d (as in
  alpha/alpha/db_interface.c).
- Remove cnpollc() stub from ddb/db_input.c.
- Add the dbctl function to syscons, pcvt, and sio. (The function for
  pcvt and sio is noop at the moment.)

Jointly developed by: bde and me

(The final version was tweaked by me and not reviewed by bde.  Thus,
if there is any error in this commit, that is entirely of mine, not
his.)

Some changes were obtained from: NetBSD
2000-01-11 14:54:01 +00:00
Poul-Henning Kamp
d685023e68 Also handle zero return from dscheck().
PR:		15956
2000-01-10 12:21:39 +00:00
Poul-Henning Kamp
ba4ad1fcea Give vn_isdisk() a second argument where it can return a suitable errno.
Suggested by:	bde
2000-01-10 12:04:27 +00:00
Warner Losh
310086415a Panic if proc0 hasn't been created and we try to call kthread_create.
This prevents a more mysterious crash later.

XXX The long term solution is defer creation of these things until
XXX proc0 lives
2000-01-10 08:00:58 +00:00
Sean Eric Fagan
893618352c Handle the case where we truss an SUGID program -- in particular, we need
to wake up any processes waiting via PIOCWAIT on process exit, and truss
needs to be more aware that a process may actually disappear while it's
waiting.

Reviewed by:	Paul Saab <ps@yahoo-inc.com>
2000-01-10 04:09:05 +00:00
Kirk McKusick
cf60e8e4bf Several performance improvements for soft updates have been added:
1) Fastpath deletions. When a file is being deleted, check to see if it
   was so recently created that its inode has not yet been written to
   disk. If so, the delete can proceed to immediately free the inode.
2) Background writes: No file or block allocations can be done while the
   bitmap is being written to disk. To avoid these stalls, the bitmap is
   copied to another buffer which is written thus leaving the original
   available for futher allocations.
3) Link count tracking. Constantly track the difference in i_effnlink and
   i_nlink so that inodes that have had no change other than i_effnlink
   need not be written.
4) Identify buffers with rollback dependencies so that the buffer flushing
   daemon can choose to skip over them.
2000-01-10 00:24:24 +00:00