Commit Graph

80 Commits

Author SHA1 Message Date
John Baldwin
44731cab3b Change the suser() API to take advantage of td_ucred as well as do a
general cleanup of the API.  The entire API now consists of two functions
similar to the pre-KSE API.  The suser() function takes a thread pointer
as its only argument.  The td_ucred member of this thread must be valid
so the only valid thread pointers are curthread and a few kernel threads
such as thread0.  The suser_cred() function takes a pointer to a struct
ucred as its first argument and an integer flag as its second argument.
The flag is currently only used for the PRISON_ROOT flag.

Discussed on:	smp@
2002-04-01 21:31:13 +00:00
Alfred Perlstein
4d77a549fe Remove __P. 2002-03-19 21:25:46 +00:00
Seigo Tanimura
183ccde6c6 Stop abusing the pgrpsess_lock. 2002-03-11 07:53:13 +00:00
Seigo Tanimura
f591779bb5 Lock struct pgrp, session and sigio.
New locks are:

- pgrpsess_lock which locks the whole pgrps and sessions,
- pg_mtx which protects the pgrp members, and
- s_mtx which protects the session members.

Please refer to sys/proc.h for the coverage of these locks.

Changes on the pgrp/session interface:

- pgfind() needs the pgrpsess_lock held.

- The caller of enterpgrp() is responsible to allocate a new pgrp and
  session.

- Call enterthispgrp() in order to enter an existing pgrp.

- pgsignal() requires a pgrp lock held.

Reviewed by:	jhb, alfred
Tested on:	cvsup.jp.FreeBSD.org
		(which is a quad-CPU machine running -current)
2002-02-23 11:12:57 +00:00
Poul-Henning Kamp
58a24f7938 Style(9) nits.
Obtained from:	~bde/sys.dif.gz
2002-02-10 22:04:44 +00:00
Andrew R. Reiter
d0615c64a5 - Attempt to help declutter kern. sysctl by moving security out from
beneath it.

Reviewed by: rwatson
2002-01-16 06:55:30 +00:00
Robert Watson
6f3933fa6f o Introduce kern.security.bsd.unprivileged_read_msgbuf, which allows
the administrator to restrict access to the kernel message buffer.
  It defaults to '1', which permits access, but if set to '0', requires
  that the process making the sysctl() have appropriate privilege.
o Note that for this to be effective, access to this data via system
  logs derived from /dev/klog must also be limited.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, NAI Labs
2001-11-30 21:40:52 +00:00
Ian Dowse
cca8f9808b Properly sanity-check the old msgbuf structure before we accept it
as being valid. Previously only the magic number and the virtual
address were checked, but it makes little sense to require that
the virtual address is the same (the message buffer is located at
the end of physical memory), and checks on the msg_bufx and msg_bufr
indices were missing.

Submitted by:	Bodo Rueskamp <br@clabsms.de>
Tripped over during a kernel debugging tutorial given by: grog
Reviewed by:	grog, dwmalone
MFC after:	1 week
2001-11-09 23:58:07 +00:00
Julian Elischer
b40ce4165d KSE Milestone 2
Note ALL MODULES MUST BE RECOMPILED
make the kernel aware that there are smaller units of scheduling than the
process. (but only allow one thread per process at this time).
This is functionally equivalent to teh previousl -current except
that there is a thread associated with each process.

Sorry john! (your next MFC will be a doosie!)

Reviewed by: peter@freebsd.org, dillon@freebsd.org

X-MFC after:    ha ha ha ha
2001-09-12 08:38:13 +00:00
Thomas Moestl
948d3d9484 Make the code to read the kernel message buffer via sysctl machine-
independent and rename the corresponding sysctls from machdep.msgbuf and
machdep.msgbuf_clear (i386 only) to kern.msgbuf and kern.msgbuf_clear.
2001-07-03 19:44:07 +00:00
Jake Burkholder
ef73ae4b0c Use PCPU_GET, PCPU_PTR and PCPU_SET to access all per-cpu variables
other then curproc.
2001-01-10 04:43:51 +00:00
Matt Jacob
661f2768f4 Make sure we have a non-null proc pointer before referring to fields
off of it.
2000-12-23 07:33:32 +00:00
Poul-Henning Kamp
b80e3b4191 A last minute brucification resulted in syntax errors in the previous commit. 2000-12-20 22:07:59 +00:00
Poul-Henning Kamp
e2a09b2649 Replace logwakeup() with "int msgbuftrigger". There is little
point in calling a function just to set a flag.

Keep better track of the syslog FAC/PRI code and try to DTRT if
they mingle.

Log all writes to /dev/console to syslog with <console.info>
priority.  The formatting is not preserved, there is no robust,
way of doing it.  (Ideas with patches welcome).
2000-12-20 21:50:37 +00:00
Poul-Henning Kamp
a52585d77e Simplify the tprintf() API.
Loose the special <sys/tprintf.h> #include file.
2000-11-26 20:35:21 +00:00
Poul-Henning Kamp
4d88c4598f Make log(-1, ...) do what addlog(...) did.
Replace all uses of addlog(...) with log(-1, ...)

Remove bogus "register" keywords in subr_prf.c

Make log() return void.
2000-11-26 19:34:06 +00:00
Mike Smith
aa998012c7 Treat %X the same as %x (not entirely correct, but close enough). 2000-10-02 07:13:10 +00:00
Jason Evans
0384fff8c5 Major update to the way synchronization is done in the kernel. Highlights
include:

* Mutual exclusion is used instead of spl*().  See mutex(9).  (Note: The
  alpha port is still in transition and currently uses both.)

* Per-CPU idle processes.

* Interrupts are run in their own separate kernel threads and can be
  preempted (i386 only).

Partially contributed by:	BSDi (BSD/OS)
Submissions by (at least):	cp, dfr, dillon, grog, jake, jhb, sheldonh
2000-09-07 01:33:02 +00:00
Peter Wemm
7c3fdf6bbc Do not fault if curproc is null. 2000-04-29 11:32:15 +00:00
Peter Wemm
c3aac50f28 $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00
Poul-Henning Kamp
ce9edcf5b5 Merge the cons.c and cons.h to the best of my ability. alpha may or
may not compile, I can't test it.
1999-08-09 10:35:05 +00:00
Brian Feldman
301ca4ffe6 Make long longs ("%ll" format) work.
Reviewed by:	msmith
1999-08-07 20:13:32 +00:00
Doug Rabson
f1550d9d41 This makes the in kernel printf routines conform to the documented
behavior of their userland counterparts with respect to return values.

Submitted by: Matthew N. Dodd <winter@jurai.net>
1999-07-24 09:34:12 +00:00
Peter Wemm
341c61590c Oops, missed out one chunk of the last patch. (*blush*)
Submitted by:	Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
Submitted by:	"Matthew N. Dodd" <winter@jurai.net>
1999-07-14 17:37:53 +00:00
Peter Wemm
8294196430 Fixes for a couple of problems in last commit:
1. Printing large quads in small bases overflowed the buffer if
   sizeof(u_quad_t) > sizeof(u_long).
2. The sharpflag checks had operator precedence bugs due to excessive
   parentheses in all the wrong places.
3. The explicit 0L was bogus in the quad_t comparison and useless in
   the long comparision.
4. There was some more bitrot in the comment about ksprintn().  Our
   ksprintn() handles bases up to 36 as well as down to 2.

Bruce has other complaints about using %q in kernel and would rather
we went towards using the C9X style %ll and/or %j.  (I agree for that
matter, as long as gcc/egcs know how to deal with that.)

Submitted by:	bde
1999-07-10 15:27:05 +00:00
Peter Wemm
7d921a016d Implement the %q prefix for the integer types. Note that egcs on the
Alpha believes that %q is for long long, whereas our quad_t and int64_t
is only just a plain long.  long long on the alpha is the same size (64
bit) as a long.  It was requested, but I have not implemented yet, support
for C9X style %lld - it should be pretty easy though.
1999-07-09 17:54:39 +00:00
Archie Cobbs
05292ba234 ksprintn() may be called with base=2, so redefine MAXNBUF accordingly.
Other brucification tweaks.

Obtained from:	bde@freebsd.org
1999-06-07 18:26:26 +00:00
Archie Cobbs
ad4f8dbd23 The function ksprintn(), which is used to convert numbers to ASCII, is not
reentrant because it returns a static buffer. This results in a race condition
when/if an interrupt handler calls log(), printf() etc. Fix this.
1999-06-06 02:41:55 +00:00
Jonathan Lemon
eb9d435ae7 Unifdef VM86.
Reviewed by:	silence on on -current
1999-06-01 18:20:36 +00:00
Archie Cobbs
8245f3f5b4 Add snprintf(3) and vsnprintf(3) capability to the kernel.
Reviewed by:	bde
1998-12-03 04:45:57 +00:00
Andrey A. Chernov
99237364cc Store formatted panic string in static buffer to make it available later
for savecore.
Previous code give only panic format to savecore
1998-09-06 06:25:18 +00:00
Bruce Evans
c41141b002 Fixed the formatting of some tables (mainly the one produced by ps
in ddb) which I broke by changing %8[l]x to %8p.  Hacked the central
printf routine to not add an "0x" prefix for %p formats if the field
width is nonzero.  The tables are still horribly misformatted on
64-bit machines.

Use %p instead of %8p to print pointers when the field width isn't
important.
1998-08-10 14:27:34 +00:00
Bruce Evans
a23d65bfc8 Cast pointers to uintptr_t/intptr_t instead of to u_long/long,
respectively.  Most of the longs should probably have been
u_longs, but this changes is just to prevent warnings about
casts between pointers and integers of different sizes, not
to fix poorly chosen types.
1998-07-15 02:32:35 +00:00
Bruce Evans
e0c38587af Fixed (un)sign extension bugs in %+n format. -4 became
(long)(u_long)(u_int)-4 = 0x00000000fffffffc on machines with 32-bit
ints and 64-bit longs.

Restored %z format for printing signed hex.  %+x shouldn't have been
used since it is an error in userland.

Prepared to nuke %n format by cloning it to %r.  %n shouldn't have
been used because it means something completely different in
userland.  Now %+r is equivalent to ddb's original %r, and %r is
equivalent to ddb's original %n.

Ignore '+' flag in combination with unsigned formats %{o,p,u,x}.
1998-07-08 10:41:32 +00:00
Poul-Henning Kamp
e796e00de3 Some cleanups related to timecounters and weird ifdefs in <sys/time.h>.
Clean up (or if antipodic: down) some of the msgbuf stuff.

Use an inline function rather than a macro for timecounter delta.

Maintain process "on-cpu" time as 64 bits of microseconds to avoid
needless second rollover overhead.

Avoid calling microuptime the second time in mi_switch() if we do
not pass through _idle in cpu_switch()

This should reduce our context-switch overhead a bit, in particular
on pre-P5 and SMP systems.

WARNING:  Programs which muck about with struct proc in userland
will have to be fixed.

Reviewed, but found imperfect by:       bde
1998-05-28 09:30:28 +00:00
Poul-Henning Kamp
58067a9909 Make the size of the msgbuf (dmesg) a "normal" option. 1998-05-19 08:58:53 +00:00
Bruce Evans
f82057be9e Handle "%...p" as "%#...x" instead of "0x%...x". This is a quick fix
for field widths being 2 larger than specified for "%<number>p".  Only
printing of null pointers is "wrong" now (it is actually "right", but
inconsistent with printf(3)).
1997-12-28 05:03:33 +00:00
Poul-Henning Kamp
a1c995b626 Last major round (Unless Bruce thinks of somthing :-) of malloc changes.
Distribute all but the most fundamental malloc types.  This time I also
remembered the trick to making things static:  Put "static" in front of
them.

A couple of finer points by:	bde
1997-10-12 20:26:33 +00:00
Bruce Evans
e4ba6a82b0 Removed unused #includes. 1997-09-02 20:06:59 +00:00
Peter Wemm
6875d25465 Back out part 1 of the MCFH that changed $Id$ to $FreeBSD$. We are not
ready for it yet.
1997-02-22 09:48:43 +00:00
Jordan K. Hubbard
1130b656e5 Make the long-awaited change from $Id$ to $FreeBSD$
This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore.  This update would have been
insane otherwise.
1997-01-14 07:20:47 +00:00
Bruce Evans
e0c95ed947 Fixed the easy cases of const poisoning in the kernel. Cosmetic. 1996-08-31 16:52:44 +00:00
Julian Elischer
269fb9d764 Collect all the functioons concerned with rebooting into one place
also add the at_shutdown callout list, and change the one user of
the present (broken) method (the vn driver) to use the new scheme.
1996-08-19 20:07:07 +00:00
Gary Palmer
4e31a37b94 Correct a comment. There is no fn `kprintf' 1996-05-09 18:58:06 +00:00
Gary Palmer
6ddbf1e299 Clean up various compiler warnings. Most (if not all) were benign
Reviewed by:	bde
1996-05-08 04:29:08 +00:00
Poul-Henning Kamp
a8c5fef5e6 KGDB is dead. It may come back one day if somebody does it. 1996-05-02 09:34:51 +00:00
Jordan K. Hubbard
2438fbba14 Bill Fenner <fenner@parc.xerox.com> comes up with a better fix to the
debugger_on_panic stuff.
1996-03-25 17:06:34 +00:00
Jordan K. Hubbard
60743d0a33 Ok, now this is correct (even simple fixes sometimes ain't so simple :) 1996-03-23 21:41:00 +00:00
Jordan K. Hubbard
3ab332ee3f Fix bogus last commit - debugger_on_panic was referenced even when
not defined.  Another change clearly committed without testing! :-(
1996-03-23 21:23:43 +00:00
Poul-Henning Kamp
924dfd9801 Remove all traces of KADB
add sysctl
	debug.debugger_on_panic: 1
if DDB or KGDB is defined.

Requested by: davidg
1996-03-23 11:31:16 +00:00