Commit Graph

240 Commits

Author SHA1 Message Date
Andrey A. Chernov
696fe9ddcd Lower initial drop value to 50, it is enough to hide linearity 2003-08-10 17:56:58 +00:00
Bruce Evans
4066649d5a Backed out the micro-optimization in 1.4. It was to help gcc-2.6.3
on i486's (and probably i386's), but it has had very little effect
since gcc-2.7 or gcc-2.95.  With gcc-3.3, it gave a small
pessimization for at least i386's, athlon-xp's and pentium4's, a
small optimization (I think) for pentium1's, and made no difference
for i386's.  (movzbl is best for all the later processors, and the
micro-optimization was to stop it being used on i486's.)
2003-07-25 15:54:23 +00:00
David E. O'Brien
ab0de15baf Use __FBSDID(). 2003-06-11 05:37:42 +00:00
Alexander Kabaev
104a9b7e3e Deprecate machine/limits.h in favor of new sys/limits.h.
Change all in-tree consumers to include <sys/limits.h>

Discussed on:	standards@
Partially submitted by: Craig Rodrigues <rodrigc@attbi.com>
2003-04-29 13:36:06 +00:00
Robert Watson
05c06d15e8 Further GC of M_STRING, missed previously. 2003-02-26 01:00:29 +00:00
Robert Watson
ae4f61f0d7 Replace license with two-clause BSD; an old license template with three
clauses was used by mistake.
2003-02-26 00:59:53 +00:00
Robert Watson
354d43abf3 Pass a malloc type into the libkern strdup() implementation explicitly,
so that callers can specify what malloc pool the resulting memory
should come from.

Requested by:	phk
2003-02-25 22:11:39 +00:00
Robert Watson
96c4266cb3 Add an implementation of strdup() to libkern. Allocated memory is of
type M_STRING, now defined in malloc.h.  Useful when string parsing
must occur using the kernel strsep() and we want to avoid toasting
the source string.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, Network Associates Laboratories
2003-02-23 14:30:17 +00:00
Warner Losh
a163d034fa Back out M_* changes, per decision of the TRB.
Approved by: trb
2003-02-19 05:47:46 +00:00
Jens Schweikhardt
00ad14c702 Improve a comment and undo a bogus s/a/an/ in a comment. An asm guru
should add more comments explaining which registers hold which variables.

Spotted by:	bde
2003-02-11 20:15:11 +00:00
Jeffrey Hsu
93eb73aa48 Add restrict keyword to string functions.
Reviewed by:	bde
2003-02-10 00:36:27 +00:00
Andrey A. Chernov
dba8967550 Since we drop NSHUFF values now, set default seed to what it becomes
after srandom(1)
2003-02-05 21:28:52 +00:00
Andrey A. Chernov
a36d6a59f0 Drop NSHUFF values right after srandom() to remove part of seed -> 1st
value correlation. Correlation still remains because of algorithm limits.
2003-02-04 11:33:09 +00:00
Andrey A. Chernov
b413a2949e Park & Miller PRNG can be safely initialized with any value but 0 and stuck
at 0 as designed. Its BSD adaptation tries to fight it by mapping 0 to
2147483647 after calculation, but this method not works since 2147483647
seed returns to 0 again on the next interation. Instead of after calculation
mapping, map 0 to another value _before_ calculation, so it never stucks.
2003-02-03 10:29:47 +00:00
Alfred Perlstein
44956c9863 Remove M_TRYWAIT/M_WAITOK/M_WAIT. Callers should use 0.
Merge M_NOWAIT/M_DONTWAIT into a single flag M_NOWAIT.
2003-01-21 08:56:16 +00:00
Jens Schweikhardt
9d5abbddbf Correct typos, mostly s/ a / an / where appropriate. Some whitespace cleanup,
especially in troff files.
2003-01-01 18:49:04 +00:00
Alfred Perlstein
29f194457c Fix instances of macros with improperly parenthasized arguments.
Verified by: md5
2002-11-09 12:55:07 +00:00
Poul-Henning Kamp
2c38619b52 Slight overhaul of arc4random() and friends.
One bug fixed:  Use getmicrouptime() to trigger reseeds so that we
cannot be tricked by a clock being stepped backwards.

Express parameters in natural units and with natural names.

Don't use struct timeval more than we need to.

Various stylistic and readability polishing.

Introduce arc4rand(void *ptr, u_int len, int reseed) function which
returns a stream of pseudo-random bytes, observing the automatic
reseed criteria as well as allowing forced reseeds.

Rewrite arc4random() in terms of arc4rand().

Sponsored by:   DARPA & NAI Labs.
2002-10-11 13:13:08 +00:00
Robert Watson
469fda7e25 Hook up strsep(3) to libkern following a repo-copy by Peter. This will
allow us to avoid nasty by-hand string parsing stuff in a number of
places in the kernel, reducing the risk of unexpected consequences
for kernel correctness.
2002-10-10 17:02:11 +00:00
Poul-Henning Kamp
943e5db958 Allow for multiple #includes of this file. 2002-10-08 07:24:19 +00:00
Dima Dorfman
20a6cb8cb8 Import the libc fnmatch() into the kernel. This will be used by,
among other things, the DEVFS rule subsystem to match nodes against a
path pattern supplied by the user.

fnmatch.c was repo-copied from src/lib/libc/gen/fnmatch.c, and the
only changes to it are those necessary to make it compile in the
kernel.  The relevant parts of fnmatch.h were imported into libkern.h.

Approved by:	-arch
2002-10-08 04:15:55 +00:00
Maxime Henrion
5ff9562781 Fix a bunch of s/int */size_t */. 2002-10-06 12:20:09 +00:00
Peter Wemm
105d189b78 Use sys/libkern.h not /usr/include/string.h 2002-09-06 06:04:36 +00:00
John Baldwin
452bffb217 Include sys/libkern.h for the kernel prototypes of these libkern functions
instead of including the userland string.h header.

Prompted by:	breakage with old string.h from recent machine/types.h fix
Approved by:	peter (in principle)
2002-08-22 20:08:07 +00:00
Mark Murray
a8966f6598 Convert GNU variadic macros to the ISO 9X variety. 2002-07-15 13:34:50 +00:00
Poul-Henning Kamp
fc3f3f6575 For some reason this didn't get added in my previous commit. 2002-05-29 21:58:12 +00:00
Mike Barcroft
17dfcdfaed Remove bogus include of <machine/ansi.h>. 2002-04-11 06:53:40 +00:00
David E. O'Brien
8fb3f3f682 Remove 'register' keyword. 2002-03-21 18:49:23 +00:00
Alfred Perlstein
8febc6ba17 Remove __P. 2002-03-20 02:15:46 +00:00
Robert Watson
6e8a94b268 DBA update: used the wrong of several NAI DBAs. 2002-03-07 17:52:03 +00:00
Thomas Moestl
90ce56c287 Add the following functions/macros to support byte order conversions and
device drivers for bus system with other endinesses than the CPU (using
interfaces compatible to NetBSD):

- bwap16() and bswap32(). These have optimized implementations on some
  architectures; for those that don't, there exist generic implementations.
- macros to convert from a certain byte order to host byte order and vice
  versa, using a naming scheme like le16toh(), htole16().
  These are implemented using the bswap functions.
- stream bus space access functions, which do not perform a byte order
  conversion (while the normal access functions would if the bus endianess
  differs from the CPU endianess).

htons(), htonl(), ntohs() and ntohl() are implemented using the new
functions above for kernel usage. None of the above interfaces is currently
exported to user land.

Make use of the new functions in a few places where local implementations
of the same functionality existed.

Reviewed by:	mike, bde
Tested on alpha by:	mike
2002-02-27 17:16:18 +00:00
Mike Barcroft
fd8e4ebc8c o Move NTOHL() and associated macros into <sys/param.h>. These are
deprecated in favor of the POSIX-defined lowercase variants.
o Change all occurrences of NTOHL() and associated marcros in the
  source tree to use the lowercase function variants.
o Add missing license bits to sparc64's <machine/endian.h>.
  Approved by: jake
o Clean up <machine/endian.h> files.
o Remove unused __uint16_swap_uint32() from i386's <machine/endian.h>.
o Remove prototypes for non-existent bswapXX() functions.
o Include <machine/endian.h> in <arpa/inet.h> to define the
  POSIX-required ntohl() family of functions.
o Do similar things to expose the ntohl() family in libstand, <netinet/in.h>,
  and <sys/param.h>.
o Prepend underscores to the ntohl() family to help deal with
  complexities associated with having MD (asm and inline) versions, and
  having to prevent exposure of these functions in other headers that
  happen to make use of endian-specific defines.
o Create weak aliases to the canonical function name to help deal with
  third-party software forgetting to include an appropriate header.
o Remove some now unneeded pollution from <sys/types.h>.
o Add missing <arpa/inet.h> includes in userland.

Tested on:	alpha, i386
Reviewed by:	bde, jake, tmm
2002-02-18 20:35:27 +00:00
Robert Watson
5578933d56 Add a 'strvalid()' call to libkern. Given a character pointer, and
buffer length, determine if the pointer is to a valid string.  Currently,
the only check is whether a '\0' appears in the buffer.  This is useful
when pulling in a structure from userland that may contain one or more
strings, and validity testing must be performed on elements of the
structure.  When copying normal string arguments, copyinstr() is
expected to be used.
2002-02-18 00:37:03 +00:00
David E. O'Brien
b231cb3945 * Remove __P and convert to ANSI prototypes.
* Remove 'register'.  (some functions had 7+ register functions...)
* Fix SCM ID's.
2002-02-01 01:32:19 +00:00
David E. O'Brien
de5fe5d53b rcsid[]->__FBSDID 2001-11-07 19:55:16 +00:00
Poul-Henning Kamp
c717903379 Garbage call!
These files have been obsoleted by compiler technology (such as it is
for gcc) for quite some time.
2001-11-05 21:10:09 +00:00
Doug Rabson
79b2d7690f Implement these using mux1 and extr.u. I'll update the userland versions
similarly. Actually, they should be inline on gcc.
2001-10-06 08:35:05 +00:00
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
John Polstra
298c8e3d6b Fix a bug that caused some false mismatches when both FNM_PATHNAME
and FNM_LEADING_DIR were specified and the pattern ended with "*".
Example: pattern="src/usr.sbin/w*", string="src/usr.sbin/watch/watch.8,v".
This should match, but did not.
1997-04-29 03:24:57 +00:00
Andrey A. Chernov
6a575f6e24 Eliminate some function calls when locale not used 1997-04-04 19:08:19 +00:00
Andrey A. Chernov
5058254947 Speedup in case locale not used 1997-04-04 18:44:19 +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
Andrey A. Chernov
edcfa07284 collate_range_cmp -> __collate_range_cmp 1996-10-31 04:32:27 +00:00
Bruce Evans
1471a79514 Unremoved used #include of <sys/systm.h> for the !GUPROF case. 1996-10-25 06:58:53 +00:00
Andrey A. Chernov
3deeb59da9 GNU-style changes:
1) Rename FNM_ICASE to FNM_CASEFOLD
2) Add FNM_LEADING_DIR
Add proper (unsigned char) casts to tolower().
Use 'char' function argument for proper sign extension
1996-10-23 16:40:20 +00:00
Wolfram Schneider
95e4966c47 add flag FNM_ICASE for case insensitve search
Reviewed by: ache
1996-10-20 15:15:59 +00:00
Bruce Evans
d6b9e17eb5 Improved non-statistical (GUPROF) profiling:
- use a more accurate and more efficient method of compensating for
  overheads.  The old method counted too much time against leaf
  functions.
- normally use the Pentium timestamp counter if available.
  On Pentiums, the times are now accurate to within a couple of cpu
  clock cycles per function call in the (unlikely) event that there
  are no cache misses in or caused by the profiling code.
- optionally use an arbitrary Pentium event counter if available.
- optionally regress to using the i8254 counter.
- scaled the i8254 counter by a factor of 128.  Now the i8254 counters
  overflow slightly faster than the TSC counters for a 150MHz Pentium :-)
  (after about 16 seconds).  This is to avoid fractional overheads.

files.i386:
permon.c temporarily has to be classified as a profiling-routine
because a couple of functions in it may be called from profiling code.

options.i386:
- I586_CTR_GUPROF is currently unused (oops).
- I586_PMC_GUPROF should be something like 0x70000 to enable (but not
  use unless prof_machdep.c is changed) support for Pentium event
  counters.  7 is a control mode and the counter number 0 is somewhere
  in the 0000 bits (see perfmon.h for the encoding).

profile.h:
- added declarations.
- cleaned up separation of user mode declarations.

prof_machdep.c:
Mostly clock-select changes.  The default clock can be changed by
editing kmem.  There should be a sysctl for this.

subr_prof.c:
- added copyright.
- calibrate overheads for the new method.
- documented new method.
- fixed races and and machine dependencies in start/stop code.

mcount.c:
Use the new overhead compensation method.

gmon.h:
- changed GPROF4 counter type from unsigned to int.  Oops, this should
  be machine-dependent and/or int32_t.
- reorganized overhead counters.

Submitted by:	Pentium event counter changes mostly by wollman
1996-10-17 19:32:31 +00:00
Peter Wemm
840a0352e9 add simple srandom() and prototype 1996-09-23 04:31:43 +00:00
Bruce Evans
f313170d3c Updated #includes to 4.4Lite style. 1996-09-10 08:32:01 +00:00
Bruce Evans
e0c95ed947 Fixed the easy cases of const poisoning in the kernel. Cosmetic. 1996-08-31 16:52:44 +00:00
Bruce Evans
09a8dfa260 Don't depend in the kernel on the gcc feature of doing arithmetic on
pointers of type `void *'.  Warn about this in future.
1996-08-31 14:48:13 +00:00
Bruce Evans
9dfde365a2 Removed sccsids and rcsids and added Id$ to save space like everything
else in libkern.
1996-08-28 20:32:21 +00:00
Bruce Evans
1f403fcfbf Cleaned up interrupt masking by declaring the state variable in a
machine-dependent macro and passing it to all machine-dependent
macros.

Eliminated the state variable for the GUPROF case.
1996-08-28 20:15:32 +00:00
Andrey A. Chernov
79deb12410 Convert to newly aded collate compare function 1996-08-12 18:49:54 +00:00
Andrey A. Chernov
36a00a4b79 Use collate for alpha character ranges 1996-08-12 04:03:50 +00:00
Jordan K. Hubbard
51295a4d3e General -Wall warning cleanup, part I.
Submitted-By: Kent Vander Velden <graphix@iastate.edu>
1996-07-12 18:57:58 +00:00
Nate Williams
24dc6cfd7e Added index() which will be used shortly in some fixes to the ibcs2
emulation code.
1996-06-07 22:21:31 +00:00
Poul-Henning Kamp
e911eafcba removed:
CLBYTES PD_SHIFT PGSHIFT NBPG PGOFSET CLSIZELOG2 CLSIZE pdei()
        ptei() kvtopte() ptetov() ispt() ptetoav() &c &c
new:
        NPDEPG

Major macro cleanup.
1996-05-02 14:21:14 +00:00
Bruce Evans
8a4599117b Don't include <sys/types.h> when it isn't used.
This commit covers most of the ANSI library functions. Many others only
need <sys/types.h> because they use u_xxx.
1996-04-19 18:40:25 +00:00
Bruce Evans
87b620baa9 Don't depend on <sys/types.h> including <sys/cdefs.h>. 1996-04-19 17:39:57 +00:00
Poul-Henning Kamp
f0fb9bf18f Extend to handle all radix < 37 1996-01-24 20:51:26 +00:00
Bruce Evans
6b3f80661e Moved BCD declarations to the correct header (libkern.h).
Fixed BCD declarations.  They didn't match their definitions...

libkern.h, bcd.c:
KNFised.  `indent' worked 99% perfectly on bcd.c.  It worked 99%
_imperfectly_ on subr_prf.c.
1996-01-16 10:23:22 +00:00
Poul-Henning Kamp
3eb50b2edd My wife is busy making me a new conical hat, so you don't need to
send any to me this time.  Commited an old copy of this files where
the tables were swapped.  Duh!.
1996-01-15 21:26:43 +00:00
Poul-Henning Kamp
77c17f5c65 Add the bcd <-> bin and hex -> ascii tables. 1996-01-15 10:03:49 +00:00
Peter Wemm
a5b996a7ec recording cvs-1.6 file death 1995-12-30 19:02:48 +00:00
Bruce Evans
1ae38af2be Copied mcount.c from the library again. #include'ing it via a relative
path to a possibly-nonexistent place didn't work well enough.  Sigh.
1995-12-30 07:24:13 +00:00
Bruce Evans
912e603778 Implemented non-statistical kernel profiling. This is based on
looking at a high resolution clock for each of the following events:
function call, function return, interrupt entry, interrupt exit,
and interesting branches.  The differences between the times of
these events are added at appropriate places in a ordinary histogram
(as if very fast statistical profiling sampled the pc at those
places) so that ordinary gprof can be used to analyze the times.

gmon.h:
Histogram counters need to be 4 bytes for microsecond resolutions.
They will need to be larger for the 586 clock.
The comments were vax-centric and wrong even on vaxes.  Does anyone
disagree?

gprof4.c:
The standard gprof should support counters of all integral sizes
and the size of the counter should be in the gmon header.  This
hack will do until then.  (Use gprof4 -u to examine the results
of non-statistical profiling.)

config/*:
Non-statistical profiling is configured with `config -pp'.
`config -p' still gives ordinary profiling.

kgmon/*:
Non-statistical profiling is enabled with `kgmon -B'.  `kgmon -b'
still enables ordinary profiling (and distables non-statistical
profiling) if non-statistical profiling is configured.
1995-12-29 15:30:05 +00:00
Bruce Evans
62394a63c8 Removed almost all traces of libkern.a. The objects that were in
libkern.a are now specified by listing their source files in
files.${MACHINE}.  The list is machine-dependent to save space.
All the necessary object for each machine must be linked into the
kernel in case an lkm wants one.
1995-12-26 13:58:31 +00:00
Bruce Evans
432889653c Added prototypes. 1995-12-26 13:25:13 +00:00
Nate Williams
637442dc62 Add-back strlen.c to the library in case a kernel is compiled without
optimization.  Gcc only in-lines calls to strlen with optimization
turned on.
1995-12-19 19:47:05 +00:00
Poul-Henning Kamp
d89a1b600f Add qsort() to libkern, taken from libc. 1995-11-08 08:40:11 +00:00
Poul-Henning Kamp
16657f0ba9 Comment out, but don't delete stuff we don't use.
Classify in "gcc stuff" and "legitimate stuff".
1995-10-05 14:46:07 +00:00
Bruce Evans
5182dcbec2 Rearrange the inner loop of scanc() to get better code on i*86's
(on an i486, 10 cycles (+ cache misses) instead of 15).  The
change should be a no-op if the compiler is any good.  The best
possible i*86 code for the same algorithm is only 1 more cycle
faster on i486's so I don't want to bother implementing an
assembler version.

scanc() is a bottleneck for OPOST processing.  It is naturally
about 4 times as slow as bcopy() on 32-bit systems.
1995-07-11 18:50:47 +00:00
Rodney W. Grimes
9b2e535452 Remove trailing whitespace. 1995-05-30 08:16:23 +00:00
Rodney W. Grimes
6c06b4e2aa Remove trailing whitespace. 1995-05-30 05:51:47 +00:00
Rodney W. Grimes
63bc0cc148 Do not install libkern into /usr/lib, blank target install: added. 1995-03-23 07:02:14 +00:00
Poul-Henning Kamp
5edd0e154f <libkern/libkern.h> has moved to <sys/libkern.h> (repository copy).
Since /usr/include/libkern doesn't and shouldn't exist, this is the
least evil way to handle this.
1995-03-17 06:15:40 +00:00
Bruce Evans
b5e8ce9f12 Add and move declarations to fix all of the warnings from `gcc -Wimplicit'
(except in netccitt, netiso and netns) and most of the warnings from
`gcc -Wnested-externs'.  Fix all the bugs found.  There were no serious
ones.
1995-03-16 18:17:34 +00:00
Garrett Wollman
ef0cdf3329 Add inet_ntoa() and replace ARP's private routine with same. 1995-03-16 17:32:27 +00:00
Ugen J.S. Antsilevich
be96c4f445 Add strncmp() function..I need it and
hope nobody will eat me alive for this..:)
1995-02-27 09:16:04 +00:00
Bruce Evans
fa724216f5 Always build libkern_p.a. `NOPROFILE' should only control user libraries. 1995-01-10 01:57:56 +00:00
Bruce Evans
1b099e1e02 Hide the declaration of ffs() if an inline ffs() is implemented.
I couldn't find a better way to avoid compiler warnings about
redundant and/or inconsistent declaration of ffs().  I'd like to
be able to declare prototypes in general headers without committing
to implementing them as `static inline' or `extern', but there
seems to be no way to do this with gcc-2.6.1.  E.g.,

	int foo(void);
	static __inline int foo(void) { return 1; }

causes a warning about the linkage mismatch, while the opposite
order causes a warning about the redundant declaration.
1994-11-14 14:56:46 +00:00
Jordan K. Hubbard
3af384bf88 I'm going to nuke strtol() for now. Now I need strncmp() and rather
that add it too, and end up fighting an unwanted battle right now,
I'm just going to back away from both and start including my own private
copies of everything.  I'm not going to use _anything_ from libkern
until we decide its fate.
1994-10-26 11:14:21 +00:00
Jordan K. Hubbard
f8a31dd2ac Add strtol() to libkern in support of some other work I'm doing.
I just know I'm going to get flamed for adding for the miserable
abortion that is libkern, but what am I supposed to do?  At least I
didn't drag in the ctype stuff! :-)
1994-10-25 14:57:57 +00:00
Bruce Evans
6485b5ff77 Use new-style declarations for min/max functions so that
"gcc -Wstrict-prototypes" doesn't emit warnings about them.

Write each min/max functions on a single line so that the similarity and
triviality of the functions is more obvious.

Put the quad min/max functions in the correct place (aphabetical order).

The u_quad min/max functions are missing.  Only 3 or 4 of the min/max
functions are actually used.  sys/socketvar.h ``should use "lmin" but
it doesn't exist now''.  lmin does exist now, but isn't used.  Since we
depend on gcc for `inline', perhaps we should depend on it for __typeof
and function-expressions and use only macros min() and max() that work
for any types (I'm not sure how to handle mixed types).
1994-09-18 23:04:25 +00:00
Paul Richards
03b6d659e5 Added -DKERNEL and added support for kernel profiling.
Reviewed by:	Bruce
1994-09-15 15:41:48 +00:00
David Greenman
147db1cbab Added qmin and qmax functions to deal with quad_t's. 1994-08-30 18:19:47 +00:00
David Greenman
3c4dd3568f Added $Id$ 1994-08-02 07:55:43 +00:00
Rodney W. Grimes
58f0484fa2 BSD 4.4 Lite Lib Sources 1994-05-27 05:00:24 +00:00
Rodney W. Grimes
df8bae1de4 BSD 4.4 Lite Kernel Sources 1994-05-24 10:09:53 +00:00