Commit Graph

103 Commits

Author SHA1 Message Date
Peter Wemm
531c9dd5f4 Fix a warning in bsearch(). Like index() etc, it de-qualifies its
arguments.  Caveat Emptor.  However, the only two consumer of it (cam)
deals with it correctly and preserves the constness.
2001-09-10 10:33:46 +00:00
Bruce Evans
60f8e3af92 Fixed some typos, verboseness and misformatting in comments. 2001-08-30 12:30:58 +00:00
Mike Silbersack
3a7810bc39 Minor improvements to arc4random():
- Decrease reseeding interval from every 64 to every 16384 runs
  to reduce entropy usage.
- Add time based reseeding.  (Every 5 minutes.)
- Throw away the first 256 words of output as suggested in
  "Weaknesses in the Key Scheduling Algorithm of RC4."

Reviewed by: Mark Murray
MFC After: jkh says ok
2001-08-30 01:15:25 +00:00
Peter Wemm
44c76a36f8 We do not have UPAGES following the tail end of the user VM space anymore. 2001-08-08 04:02:22 +00:00
Kris Kennaway
6979f76ff6 Sync to OpenBSD (update comment and minor style change).
Obtained from:	OpenBSD
MFC after:	1 week
2001-07-24 11:34:22 +00:00
Julian Elischer
0b1ae8097d A set of changes to reduce the number of include files the kernel
takes from /usr/include. I cannot check them on alpha.. (will try beast)

Briefly looked at by: Warner Losh <imp@harmony.village.org>
2001-07-08 04:56:07 +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
Boris Popov
6f2d8adb12 Add function prototypes and base module for kernel side iconv library.
Add simple "xlat" converter which performs 8to8 table based conversion.
Unicode converter will be added in the near future.

Reviewed by:			silence on arch@
Files placement reviewed by:	bde
Obtained from:			smbfs
2001-04-09 09:39:29 +00:00
Kenneth D. Merry
3393f8daa3 Rewrite of the CAM error recovery code.
Some of the major changes include:

	- The SCSI error handling portion of cam_periph_error() has
	  been broken out into a number of subfunctions to better
	  modularize the code that handles the hierarchy of SCSI errors.
	  As a result, the code is now much easier to read.

	- String handling and error printing has been significantly
	  revamped.  We now use sbufs to do string formatting instead
	  of using printfs (for the kernel) and snprintf/strncat (for
	  userland) as before.

	  There is a new catchall error printing routine,
	  cam_error_print() and its string-based counterpart,
	  cam_error_string() that allow the kernel and userland
	  applications to pass in a CCB and have errors printed out
	  properly, whether or not they're SCSI errors.  Among other
	  things, this helped eliminate a fair amount of duplicate code
	  in camcontrol.

	  We now print out more information than before, including
	  the CAM status and SCSI status and the error recovery action
	  taken to remedy the problem.

	- sbufs are now available in userland, via libsbuf.  This
	  change was necessary since most of the error printing code
	  is shared between libcam and the kernel.

	- A new transfer settings interface is included in this checkin.
	  This code is #ifdef'ed out, and is primarily intended to aid
	  discussion with HBA driver authors on the final form the
	  interface should take.  There is example code in the ahc(4)
	  driver that implements the HBA driver side of the new
	  interface.  The new transfer settings code won't be enabled
	  until we're ready to switch all HBA drivers over to the new
	  interface.

src/Makefile.inc1,
lib/Makefile:		Add libsbuf.  It must be built before libcam,
			since libcam uses sbuf routines.

libcam/Makefile:	libcam now depends on libsbuf.

libsbuf/Makefile:	Add a makefile for libsbuf.  This pulls in the
			sbuf sources from sys/kern.

bsd.libnames.mk:	Add LIBSBUF.

camcontrol/Makefile:	Add -lsbuf.  Since camcontrol is statically
			linked, we can't depend on the dynamic linker
			to pull in libsbuf.

camcontrol.c:		Use cam_error_print() instead of checking for
			CAM_SCSI_STATUS_ERROR on every failed CCB.

sbuf.9:			Change the prototypes for sbuf_cat() and
			sbuf_cpy() so that the source string is now a
			const char *.  This is more in line wth the
			standard system string functions, and helps
			eliminate warnings when dealing with a const
			source buffer.

			Fix a typo.

cam.c:			Add description strings for the various CAM
			error status values, as well as routines to
			look up those strings.

			Add new cam_error_string() and
			cam_error_print() routines for userland and
			the kernel.

cam.h:			Add a new CAM flag, CAM_RETRY_SELTO.

			Add enumerated types for the various options
			available with cam_error_print() and
			cam_error_string().

cam_ccb.h:		Add new transfer negotiation structures/types.

			Change inq_len in the ccb_getdev structure to
			be "reserved".  This field has never been
			filled in, and will be removed when we next
			bump the CAM version.

cam_debug.h:		Fix typo.

cam_periph.c:		Modularize cam_periph_error().  The SCSI error
			handling part of cam_periph_error() is now
			in camperiphscsistatuserror() and
			camperiphscsisenseerror().

			In cam_periph_lock(), increase the reference
			count on the periph while we wait for our lock
			attempt to succeed so that the periph won't go
			away while we're sleeping.

cam_xpt.c:		Add new transfer negotiation code.  (ifdefed
			out)

			Add a new function, xpt_path_string().  This
			is a string/sbuf analog to xpt_print_path().

scsi_all.c:		Revamp string handing and error printing code.
			We now use sbufs for much of the string
			formatting code.  More of that code is shared
			between userland the kernel.

scsi_all.h:		Get rid of SS_TURSTART, it wasn't terribly
			useful in the first place.

			Add a new error action, SS_REQSENSE.  (Send a
			request sense and then retry the command.)
			This is useful when the controller hasn't
			performed autosense for some reason.

			Change the default actions around a bit.

scsi_cd.c,
scsi_da.c,
scsi_pt.c,
scsi_ses.c:		SF_RETRY_SELTO -> CAM_RETRY_SELTO.  Selection
			timeouts shouldn't be covered by a sense flag.

scsi_pass.[ch]:		SF_RETRY_SELTO -> CAM_RETRY_SELTO.

			Get rid of the last vestiges of a read/write
			interface.

libkern/bsearch.c,
sys/libkern.h,
conf/files:		Add bsearch.c, which is needed for some of the
			new table lookup routines.

aic7xxx_freebsd.c:	Define AHC_NEW_TRAN_SETTINGS if
			CAM_NEW_TRAN_CODE is defined.

sbuf.h,
subr_sbuf.c:		Add the appropriate #ifdefs so sbufs can
			compile and run in userland.

			Change sbuf_printf() to use vsnprintf()
			instead of kvprintf(), which is only available
			in the kernel.

			Change the source string for sbuf_cpy() and
			sbuf_cat() to be a const char *.

			Add __BEGIN_DECLS and __END_DECLS around
			function prototypes since they're now exported
			to userland.

kdump/mkioctls:		Include stdio.h before cam.h since cam.h now
			includes a function with a FILE * argument.

Submitted by:	gibbs (mostly)
Reviewed by:	jdp, marcel (libsbuf makefile changes)
Reviewed by:	des (sbuf changes)
Reviewed by:	ken
2001-03-27 05:45:52 +00:00
Mark Murray
d888fc4e73 RIP <machine/lock.h>.
Some things needed bits of <i386/include/lock.h> - cy.c now has its
own (only) copy of the COM_(UN)LOCK() macros, and IMASK_(UN)LOCK()
has been moved to <i386/include/apic.h> (AKA <machine/apic.h>).
Reviewed by:	jhb
2001-02-11 10:44:09 +00:00
Chris D. Faulhaber
420923e972 - Reverse the order of two loop invariant to ensure strlcat() does not
attempt to read memory when siz is 0
- Clarify comments referring to strlcat() usage

PR:		24278, 24295
Submitted by:	Tony Finch <dot@dotat.at>
		Richard Kettlewell <rjk@greenend.org.uk>
Reviewed by:	-audit
2001-01-17 20:51:16 +00:00
Benno Rice
aab719f090 Convert all instances of:
#include "quad.h"

to:

#include <libkern/quad.h>

as the former breaks under a kernel build.
This change had already been performed on the files that were used in other
kernel builds, however the PowerPC kernel build seems to require some that
weren't being used.

Reviewed by:	obrien, peter
2001-01-12 07:28:46 +00:00
Poul-Henning Kamp
aac61d609c Add __ucmpdi2 prototype to quelch a warning. 2000-12-07 22:28:20 +00:00
Mark Murray
4cb1e53914 Recouple arc4random(9) to the entropy device. This works whether the
entropy device is loaded or not.

If the entropy device is NOT loaded, the the quality of perturbations
supplied by this will suffer.
2000-12-02 16:23:54 +00:00
Alfred Perlstein
ed0fe1449c add threadsafe version of inet_ntoa (inet_ntoa_r takes a buffer to fill)
this is used by some debugging functions
2000-11-25 03:14:31 +00:00
Poul-Henning Kamp
990e680b90 Fix compilation of profiled kernels by including <machine/lock.h> 2000-10-14 08:34:27 +00:00
Doug Rabson
8d9761debf Next round of fixes to the ia64 code. This includes simulated clock and
disk drivers along with a load of fixes to context switching, fork
handling and a load of other stuff I can't remember now. This takes us as
far as start_init() before it dies. I guess now I will have to finish off
the VM system and syscall handling :-).
2000-10-04 17:53:03 +00:00
John Baldwin
e2059d0bfb Back out previous revision now that sys/random.h is properly fixed. 2000-09-11 19:34:04 +00:00
John Baldwin
ebbb6afce3 Add #include's of sys/proc.h and sys/param.h to silence a warning. 2000-09-11 05:51:58 +00:00
Mark Murray
bf3191e9fa Comment out unavailable call. This needs to be revisited when the entropy
device is complete.
Reviewed by:	dfr
2000-06-25 10:15:58 +00:00
Peter Wemm
365c5db0a7 Add $FreeBSD$ 2000-05-01 20:32:07 +00:00
Peter Wemm
c447342094 Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"
is an application space macro and the applications are supposed to be free
to use it as they please (but cannot).  This is consistant with the other
BSD's who made this change quite some time ago.  More commits to come.
1999-12-29 05:07:58 +00:00
Peter Wemm
4537138981 Zap c_index() and c_rindex(). Bruce prefers these to implicitly convert
a const into a non-const as they do in libc.  I feel that defeating the
type checking like that quite evil, but that's the way it is.
1999-12-10 17:38:41 +00:00
Archie Cobbs
37438111e1 Eliminate compiler warning. 1999-12-01 22:56:51 +00:00
Dan Moschuk
e6082d1936 In the extremely miniscule chance that read_random returns <= 0, don't try
and use that return code as a modulus (panics are bad, mmmkay?)
1999-11-29 19:23:35 +00:00
Dan Moschuk
d65b167028 Address the concerns of the ``randomness'' of the initial PRNG. Now, we
use bits from /dev/random to stir the S-box.  Also add an internal counter to
keep the S-box stirred on a regular basis.

Reviewed by: msmith
1999-11-28 23:39:49 +00:00
Dan Moschuk
ee3fd60126 Introduce OpenBSD-like Random PIDs. Controlled by a sysctl knob
(kern.randompid), which is currently defaulted off.  Use ARC4 (RC4) for our
random number generation, which will not get me executed for violating
crypto laws; a Good Thing(tm).

Reviewed and Approved by: bde, imp
1999-11-28 17:51:09 +00:00
Archie Cobbs
25792ef324 Change the prototype of the strto* routines to make the second
parameter a char ** instead of a const char **.  This make these
kernel routines consistent with the corresponding libc userland
routines.

Which is actually 'correct' is debatable, but consistency and
following the spec was deemed more important in this case.

Reviewed by (in concept):	phk, bde
1999-11-24 01:03:08 +00:00
Peter Wemm
95dc37f68d Tempt fate and stop index from converting a const char * into a char *.
I've made a seperate version (c_index() etc) that use const/const, but
I'm not sure it's worth it considering there is one file in the tree
that uses index on const strings (kern_linker.c) and it's easily adjusted
to scan the strings directly (and is perhaps more efficient that way).
1999-11-21 04:26:48 +00:00
Poul-Henning Kamp
1a4e73ba51 Move strto{u}[ql]() into their own libkern files.
Urged by:	bde
1999-11-03 18:20:59 +00:00
Peter Wemm
c3aac50f28 $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00
Warner Losh
d64292d252 Use the latest version of these files from OpenBSD.
1) Safty change from casper dik was added to OpenBSD's sources since I
   grabbed them. milltert@openbsd.org
2) Split up strlcpy to improve efficiency of the common case.
   milltert@openbsd.org
3) Cleanup of cross references for man page.  {alex,aaron}@openbsd.org

Pointed out by: deraadt@openbsd.org
1999-08-10 05:58:58 +00:00
Warner Losh
a41df9e30e Import strl{cat,cpy} from OpenBSD.
Obtained from: OpenBSD
1999-08-10 05:21:31 +00:00
Doug Rabson
13549ec01c Add a fast version of bcmp which compares longwords at a time.
Submitted by: Peter Jeremy <jeremyp@gsmx07.alcatel.com.au>
1999-06-19 16:30:28 +00:00
Bruce Evans
fcc3f5ee76 Backed out the previous backout. We may as well have a version of ucmpdi2.c
that actually compiles, and I use it for i386's with 64 bit longs.
1999-06-02 16:39:14 +00:00
Justin T. Gibbs
600829cdfc Nuke ucmpdi2.c from i386/libkern to serve as a reminder that switch
statements on 64bit values generate poor code.

Requested by: bde
1999-05-14 17:39:54 +00:00
Justin T. Gibbs
a173bb9fc5 Add ucmpdi2.c to i386 libkern build. Its required for some quad
manipulation in the aic7xxx driver.
1999-05-14 05:05:33 +00:00
Matthew Dillon
e3870274b4 Fix warnings in preparation for adding -Wall -Wcast-qual to the
kernel compile
1999-01-28 02:26:20 +00:00
Nate Williams
09ede38dc4 - Fix modulo bug.
Reminded by:	bde
1998-12-01 05:29:06 +00:00
Bruce Evans
450e9e37dc Converted rcsid to $Id$ again. There shouldn't be any rcsids in the kernel. 1998-08-17 19:26:37 +00:00
Bruce Evans
37889b394a Changed to the C9x draft spelling of the (unsigned) integral type
suitable for holding object pointers (ptrint_t -> uintptr_t).
Added corresponding signed type (intptr_t).  Changed/added
corresponding non-C9x types for function pointers to match.  Don't
use nonstandard types to implement these types, and don't comment
on them in <machine/types.h>.
1998-07-14 05:09:48 +00:00
Poul-Henning Kamp
53592f437b #include sys/libkern.h instead of stdlib.h.
PR:		7105
Reviewed by:	phk
Submitted by:	Robert Watson <robert+freebsd@cyrus.watson.org>
1998-06-30 11:05:11 +00:00
Doug Rabson
897cd717a5 Add initial support for the FreeBSD/alpha kernel. This is very much a
work in progress and has never booted a real machine.  Initial
development and testing was done using SimOS (see
http://simos.stanford.edu for details).  On the SimOS simulator, this
port successfully reaches single-user mode and has been tested with
loads as high as one copy of /bin/ls :-).

Obtained from: partly from NetBSD/alpha
1998-06-10 10:57:29 +00:00
Bruce Evans
c1087c1324 Support compiling with `gcc -ansi'. 1998-04-15 17:47:40 +00:00
John Dyson
95e5e988e0 Make our v_usecount vnode reference count work identically to the
original BSD code.  The association between the vnode and the vm_object
no longer includes reference counts.  The major difference is that
vm_object's are no longer freed gratuitiously from the vnode, and so
once an object is created for the vnode, it will last as long as the
vnode does.

When a vnode object reference count is incremented, then the underlying
vnode reference count is incremented also.  The two "objects" are now
more intimately related, and so the interactions are now much less
complex.

When vnodes are now normally placed onto the free queue with an object still
attached.  The rundown of the object happens at vnode rundown time, and
happens with exactly the same filesystem semantics of the original VFS
code.  There is absolutely no need for vnode_pager_uncache and other
travesties like that anymore.

A side-effect of these changes is that SMP locking should be much simpler,
the I/O copyin/copyout optimizations work, NFS should be more ponderable,
and further work on layered filesystems should be less frustrating, because
of the totally coherent management of the vnode objects and vnodes.

Please be careful with your system while running this code, but I would
greatly appreciate feedback as soon a reasonably possible.
1998-01-06 05:26:17 +00:00
Poul-Henning Kamp
0abc78a697 Rename some local variables to avoid shadowing other local variables.
Found by: -Wshadow
1997-11-07 09:21:01 +00:00
Bruce Evans
1fd0b0588f Removed unused #includes. 1997-08-02 14:33:27 +00:00
Andrey A. Chernov
e728d480d2 Style optimization in newly added POSIX range []] conformance, redo
'for' loop as do...while and remove variable unneded now
1997-06-07 01:33:10 +00:00
Andrey A. Chernov
05a068e60e Add missing FNM_PERIOD check for '[' range
Don't treat !^ as first characters in the range, just as negate sign
[/] never match if FNM_PATHNAME
1997-06-06 22:33:28 +00:00
Andrey A. Chernov
e2dbbd9eea 1) Now conforms POSIX.2 2.8.3.2 requirements about []] pattern
2) Treat unclosed [ range in pattern as regular characters (bash style)
1997-06-06 21:48:55 +00:00