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Commit Graph

7833 Commits

Author SHA1 Message Date
Mike Makonnen
7e2160688c The move to _retire() a thread in the GC instead of in the thread's
exit function has invalidated the need for _spin[un]lock_pthread().
The _spin[un]lock() functions can now dereference curthread without
the danger that the ldtentry containing the pointer to the thread
has been cleared out from under them.
2003-06-29 00:12:40 +00:00
Ruslan Ermilov
f5913c9736 mdoc(7) fix: Use the normal AT&T macro (.At) rather than its
internal string in the macro context.
2003-06-28 22:12:30 +00:00
David Xu
a772047bc6 o Use a daemon thread to monitor signal events in kernel, if pending
signals were changed in kernel, it will retrieve the pending set and
  try to find a thread to dispatch the signal. The dispatching process
  can be rolled back if the signal is no longer in kernel.

o Create two functions _thr_signal_init() and _thr_signal_deinit(),
  all signal action settings are retrieved from kernel when threading
  mode is turned on, after a fork(), child process will reset them to
  user settings by calling _thr_signal_deinit(). when threading mode
  is not turned on, all signal operations are direct past to kernel.

o When a thread generated a synchoronous signals and its context returned
  from completed list, UTS will retrieve the signal from its mailbox and try
  to deliver the signal to thread.

o Context signal mask is now only used when delivering signals, thread's
  current signal mask is always the one in pthread structure.

o Remove have_signals field in pthread structure, replace it with
  psf_valid in pthread_signal_frame. when psf_valid is true, in context
  switch time, thread will backout itself from some mutex/condition
  internal queues, then begin to process signals. when a thread is not
  at blocked state and running, check_pending indicates there are signals
  for the thread, after preempted and then resumed time, UTS will try to
  deliver signals to the thread.

o At signal delivering time, not only pending signals in thread will be
  scanned, process's pending signals will be scanned too.

o Change sigwait code a bit, remove field sigwait in pthread_wait_data,
  replace it with oldsigmask in pthread structure, when a thread calls
  sigwait(), its current signal mask is backuped to oldsigmask, and waitset
  is copied to its signal mask and when the thread gets a signal in the
  waitset range, its current signal mask is restored from oldsigmask,
  these are done in atomic fashion.

o Two additional POSIX APIs are implemented, sigwaitinfo() and sigtimedwait().

o Signal code locking is better than previous, there is fewer race conditions.

o Temporary disable most of code in _kse_single_thread as it is not safe
  after fork().
2003-06-28 09:55:02 +00:00
David Xu
d15cbd7dc0 Use mmap retuned value.
Reviewed by: deischen
2003-06-28 09:48:05 +00:00
David Xu
8d5f23a1f9 Temporary disable rwlock based code, replace it with low level KSE locking
code until rtld-elf and libkse can cooperate better, those code can be
restored.

Reviewed by: deischen
2003-06-28 09:47:22 +00:00
David Xu
52d9c77df4 Write new thread pointer back only when success.
Reviewed by: deischen
2003-06-28 09:41:59 +00:00
David Xu
a56b526b51 After thread was interrupted by signal, it should relock mutex.
Reviewed by: deischen
2003-06-28 09:40:57 +00:00
David Xu
a07576d63c if thread is exiting, just returns. kse_thr_interrupt interface
was changed, it needs signal parameter, pass -1 to it, it indicates to
interrupt syscall.

Reviewed by: deischen
2003-06-28 09:39:35 +00:00
David Schultz
b6b7fb3782 Update to reflect changes in vfscanf.c,v 1.32. Remove bogus
documentation for %a, and document it correctly instead.
s/one of aefg/one of a, e, f, or g/

Reviewed by:	standards@
2003-06-28 09:03:25 +00:00
David Schultz
370077c7a6 Revamp scanf's floating-point-parsing algorithm to support
[+|-]Inf, [+|-]NaN, nan(...), and hexidecimal FP constants.
While here, add %a and %A, which are aliases for %e, and
add support for long doubles.

Reviewed by:	standards@
2003-06-28 09:03:05 +00:00
Marcel Moolenaar
6128a735ea Create compatibility links for libc_r on ia64 to prevent build-time
breakages. Note that runtime compatibility is not guaranteed. Future
changes to setjmp/longjmp in libc will break threaded applications
linked against libc_r.so.5 on ia64. We pull our "tier 2" card once
more...

Reviewed by: ru
2003-06-27 18:07:47 +00:00
Yaroslav Tykhiy
b712059588 Correct a misspelled name of time_hi_and_version. 2003-06-27 13:41:29 +00:00
Marcel Moolenaar
c8cd8ab017 o disconnect libc_r from the build on ia64. The library is now
obsolete. The intend is to add glue to either libthr or
   libpthread to create the necessary compat links.
o  Hook libpthread to the build on ia64. This is slightly out of
   order, because the kernel still doesn't have all the support,
   but that's not a problem in this case.
2003-06-27 07:41:51 +00:00
Marcel Moolenaar
fd62f5ca46 Implement _ia64_save_context() and _ia64_restore_context(). Both
functions are derived from the swapctx() and restorectx() (resp)
from sys/ia64/ia64/context.s. The code is expected to be 99%
correct, but has not yet been tested.

Note that with these functions operating on mcontext_t, we also
created the foundation upon which we can implement getcontext(2)
and setcontext(2) replacements. It's not guaranteed that the use
of these syscalls and _ia64_{save|restore}_context() on the same
uicontext_t is actually going to work. Replacing the syscalls is
now trivially achieved.

This commit completes the ia64 port of libpthread itself (modulo
testing and bugfixes).
2003-06-27 06:15:13 +00:00
John W. De Boskey
788940b418 fix NIS+ YP compat mode
PR:		bin/52792
Submitted by:	TOMITA Yoshinori <yoshint@flab.fujitsu.co.jp>
2003-06-27 03:37:44 +00:00
Stefan Eßer
3a8c99f73f Fix URL of zlib home page: It's hosted at gzip.org now. 2003-06-26 20:05:47 +00:00
Alexey Zelkin
683fe11379 . style(9)
. fix/add comments (to cover changes done thru last 20 months)
. extend monetary testcase to cover int_* values
2003-06-26 10:46:16 +00:00
Marcel Moolenaar
b51f305ec1 Implement _ia64_enter_uts(). The purpose of this function is to switch
the register stack and memory stack and call the function given to it.

While here, provide empty, non-working, stubs for the context functions
(_ia64_save_context() and _ia64_restore_context()) so that anyone can at
least compile libkse from CVS sources. Real implementations will follow
soon.
2003-06-26 05:40:15 +00:00
Marcel Moolenaar
6351f43f14 Implement _thr_enter_uts() and _thr_switch() as inline functions to
minimize the amount and complexity of assembly code that needs to be
written. This way the core functionality is spread over 3 elementary
functions that don't have to do anything that can more easily and
more safely be done in C. As such, assembly code will only have to
know about the definition of mcontext_t.
The runtime cost of not having these functions being inlined is less
important than the cleanliness and maintainability of the code at
this stage of the implementation.
2003-06-26 03:55:58 +00:00
Peter Wemm
764ca408a6 Re-enable libstand on all platforms including amd64. 2003-06-26 03:48:23 +00:00
Peter Wemm
ebc5ba0efa Add amd64 build glue 2003-06-26 03:48:01 +00:00
Alexey Zelkin
fca2738d67 Reduce code duplication by separating _PathLocle detection code into
internal helper function.
2003-06-25 22:42:33 +00:00
Alexey Zelkin
93c847344b Move _PathLocale declaration to more logical place (setlocale.c) 2003-06-25 22:34:13 +00:00
Alexey Zelkin
d8d4841398 Catch up with _PATH_LOCALE move from rune.h to paths.h 2003-06-25 22:31:42 +00:00
David E. O'Brien
ea5a1812ba mdoc police 2003-06-25 21:31:43 +00:00
David E. O'Brien
4c861aeb86 Be more specific in BUGS.
Submitted by:	ru

Add history.
2003-06-25 19:18:44 +00:00
David E. O'Brien
0ab6a0c787 Push the alloca #error warning farther down to play nicer with some out of
tree local translator.

Requested by:	 jmallett
2003-06-25 19:06:40 +00:00
Andrey A. Chernov
ba10c47105 Don't statically initialize buf to _PATH_DEV, _PATH_DEV always copied to
it in any case.
2003-06-24 22:20:06 +00:00
Yaroslav Tykhiy
9530d06766 Unify cross-references between sigpending(2), sigprocmask(2),
and sigsuspend(2), all three of which operate or depend on the
process signal mask.

Add a missing xref to sigsetops(3), without which the above three
syscalls would be useless.
2003-06-24 15:41:19 +00:00
Yaroslav Tykhiy
f8193a054c Supplement the cross-references section with those to sigpending(2)
and sigprocmask(2).  These two syscalls are likely to be accompanied
by a few sigsetops(3) in a typical piece of code.
2003-06-24 15:27:31 +00:00
Marcel Moolenaar
ec5f6d191d Implement signalcontext(). Needed by libpthread (aka libkse). 2003-06-24 05:06:42 +00:00
Marcel Moolenaar
5858b0cea8 Explicitly widen int types before casting to pointer types. On 64-bit
platforms the compiler warns about incompatible integer/pointer casts
and on ia64 this generally is bad news. We know that what we're doing
here is valid/correct, so suppress the warning. No functional change.

Sleeps better: marcel
2003-06-24 00:37:26 +00:00
Marcel Moolenaar
82468d1f27 Untangle the inter-dependency of kse types and ksd types/functions
by moving the definition of struct ksd to pthread_md.h and removing
the inclusion of ksd.h from thr_private.h (which has the definition
of struct kse and kse_critical_t). This allows ksd.h to have inline
functions that use struct kse and kse_critical_t and generally
yields a cleaner implementation at the cost of not having all ksd
related types/definitions in one header.

Implement the ksd functionality on ia64 by using inline functions
and permanently remove ksd.c from the ia64 specific makefile.

This change does not clean up the i386 specific version of ksd.h.

NOTE: The ksd code on ia64 abuses the tp register in the same way
as it is abused in libthr in that it is incompatible with the
runtime specification. This will be address when support for TLS
hits the tree.
2003-06-23 23:15:06 +00:00
Marcel Moolenaar
46559d7101 Change the definition of _ksd_curkse, _ksd_curthread and
_ksd_readandclear_tmbx to be function-like. That way we
can define them as inline functions or create prototypes
for them.

This change allows the ksd interface on ia64 to be fully
inlined.
2003-06-23 09:49:16 +00:00
Marcel Moolenaar
ca4b6c293b Define THR_{G|S}ETCONTEXT to expand to {g|s}etcontext(2).
Define THR_ALIGN to align at 16-byte boundaries.
2003-06-23 04:52:09 +00:00
Marcel Moolenaar
97caaa6522 Implement atomic_swap_{int|long|ptr}. Define atomic_swap_ptr as a
macro that expands to atomic_swap_long() to avoid compiler warnings
caused by incompatible pointer passing.
2003-06-23 04:44:43 +00:00
Marcel Moolenaar
c2dac9a63d Remove _atomic_lock. It's not used. 2003-06-23 04:33:32 +00:00
Marcel Moolenaar
842728619a Move the machine specific files from sys/Makefile.inc and put them
in a machine specific makefile. While here, sort the sub-directories
in Makefile and remove _atomic_lock.S from all makefiles.
2003-06-23 04:28:31 +00:00
Warner Losh
f1fe8d5bac Add clarifications about the information that ntp_gettime returns.
TAI is a timescale, just like UTC.  The tai field returns the offset
between the two, and isn't really used for precision time keeping.
Explain in brief what a positive and a negative leap seconds are.  Add
some URLs to very useful web pages about time and time keeping for
more information on using this API.

Reviewed by: phk
2003-06-21 20:27:54 +00:00
David Schultz
d086ded323 Userland spinlocks bad. Sleep locks good.
Use the latter for gdtoa.

Requested by:	deischen (far too long ago)
2003-06-21 08:20:14 +00:00
Poul-Henning Kamp
97679e71b0 ttyname(3) must return absolute pathnames.
Noticed by:	kris
2003-06-21 08:16:12 +00:00
Poul-Henning Kamp
e7acddfdef Use devname(3) to do the task.
Reviewed by:	imp
2003-06-20 22:45:53 +00:00
Garrett Wollman
4f85c6dd30 Explain the relationship to POSIX. 2003-06-20 22:41:00 +00:00
Warner Losh
795b332691 ntp_adjtime returns the current state of the clock (TIME_*) on success
or -1 on failure.  The manual used to say it returned 0 or -1.  Both
examination of the kernel sources, and ntpd show that this is the case.

MFC After: 3 days
2003-06-20 21:14:59 +00:00
Poul-Henning Kamp
529ac58781 Add devname_r(3) which takes a buffer as argument. 2003-06-20 09:52:27 +00:00
Matthew N. Dodd
913111f124 Correct an apparent typo.
PR:		 bin/53515
Submitted by:	 Lukas Ertl <l.ertl@univie.ac.at>
Approved by:	 jmallett
2003-06-19 22:12:54 +00:00
Kris Kennaway
97cbd1c728 Remove bogus non-reentrant "temporary" implementation of gethostbyaddr_r()
that has been here for 6 years and 9 months.

Reviewed by:	deischen
MFC After:	1 week
2003-06-19 07:57:11 +00:00
Philippe Charnier
b160a51e51 The .Fn function 2003-06-18 19:43:17 +00:00
Hajimu UMEMOTO
ed40ddd9dc Add IPv6 related attributes defined in RFC3162.
MFC after:	1 week
2003-06-18 17:29:15 +00:00
Ruslan Ermilov
19c2ee9e5f Make the execle() synopsis look (again) like a normal C prototype.
Also fixed the rest of ell (list) functions prototypes to include
a (commented out) terminating null pointer.

Pointed out by:	bde
Obtained from:	POSIX.1-2001
Glanced at by:	imp
2003-06-18 15:24:21 +00:00
David Xu
eb90369fa6 Don't lock scheduler lock twice. 2003-06-18 06:08:03 +00:00
Maxim Sobolev
e2ff474cac Xref policy: exit(2) -> _exit(2). 2003-06-17 09:36:47 +00:00
Poul-Henning Kamp
bbaba031a5 Fix the execle(3) synopsis to include the environment pointer.
Confused:	anordby
2003-06-17 08:57:37 +00:00
Doug Barton
605d07fcea Fix the #include part of the SYNOPSIS for heap.3
PR:		bin/45269
Submitted by:	Slaven Rezic <slaven.rezic@berlin.de>
2003-06-17 08:43:19 +00:00
Martin Blapp
b77aeb1292 Kill prototype for __msgwrite too. It is not needed anymore. 2003-06-15 10:55:39 +00:00
Martin Blapp
dd01398df6 Fix the master yppasswd routines, so they really work
for root on ypmaster. yppasswd_local() did use YPPASSWDPROG
instead of MASTER_YPPASSWDPROG, and the domain was not set,
resulting in a coredump during xdr-encode.

Reviewed by:	des
2003-06-15 10:37:22 +00:00
Martin Blapp
ec01fc4f14 Fix the master yppasswd routines, so they really work
for root on ypmaster. Fix ypclnt_havepasswdd() to work
for AF_LOCAL connections.

Reviewed by:	des
2003-06-15 10:36:53 +00:00
Martin Blapp
ce9bc43cb3 Replace the old SCM_CREDS cred procedures. They can now be
replaced just fine with getpeereid() and the whole code
gets a lot simpler. We don't break the ABI, since all server
programms use __rpc_get_local_uid(), and we just change library
internals.

Reviewed by:	des
2003-06-15 10:32:01 +00:00
David Xu
d8406ada91 P_THREADED was renamed to P_SA, follow up. 2003-06-15 03:42:04 +00:00
David E. O'Brien
457946d9bd Remove MAINTAINER lines. 2003-06-14 19:32:52 +00:00
Mark Murray
0ebec5d3c8 Tidy up. Sort headers. 2003-06-14 18:42:37 +00:00
David E. O'Brien
5c784c8f4b Only use this with a non-GCC compiler. 2003-06-14 06:04:23 +00:00
Kenneth D. Merry
50a7fdaed8 Remove MAINTAINER= lines in the makefiles for camcontrol, iostat, libcam
and libdevstat, since the new way of doing things is to just list
maintainership in src/MAINTAINERS.

Also, remove duplicate entries in src/MAINTAINERS for those utilities.  I
already had entries for them.
2003-06-14 05:28:01 +00:00
Tom Rhodes
720f2e44a3 Document ENOSPC.
PR:		52612
Submitted by:	Marc Olzheim <marcolz@ilse.nl>
2003-06-13 22:41:12 +00:00
Peter Wemm
70de0c73a5 This is unusable on amd64. Remove it before it causes more confusion.
It is only possible to do this on an ABI that has a compulsory frame
pointer, which the amd64 ABI does not.  Thus, it is only possible to
implement this as a compiler builtin.
2003-06-13 21:56:30 +00:00
Ruslan Ermilov
ada24e690c In the PKT_ALIAS_PROXY_ONLY mode, make sure to preserve the
original source IP address, as promised in the manual page.

Spotted by:	Vaclav Petricek
2003-06-13 21:54:01 +00:00
Ruslan Ermilov
9c88dc8855 Removed a couple of .Xo/.Xc that are leftovers of the "ninth-argument
limit" mdoc(7) atavism.
2003-06-13 21:39:22 +00:00
Ruslan Ermilov
7176089886 Clarify that original address and port when doing transparent proxying
are _destination_ address and port.
2003-06-13 21:36:24 +00:00
Ruslan Ermilov
61de149d30 Added myself to the AUTHORS section. 2003-06-13 21:32:01 +00:00
Tim J. Robbins
a5e2489d03 Mark libxpg4 as OBSOLETE_IN_6: it has been empty since its contents
were merged into libc in 4.5-RELEASE.
2003-06-13 07:21:37 +00:00
Tim J. Robbins
77156cb782 Mark the following interfaces as OBSOLETE_IN_6:
fgetrune(), fputrune(), fungetrune(), mbrune(), mbrrune(), mbmb(),
    setinvalidrune(), UTF2 encoding method.
These have been marked as being deprecated in their manual pages since 5.0,
and their use causes a linker warning.
2003-06-13 07:13:54 +00:00
Jordan K. Hubbard
3dfdc427f1 Fixes to locale code to properly use indirect pointers in order to prevent
memory leaks (fixes bugs earlier purported to be fixed).
Submitted by:	Ed Moy <emoy@apple.com>
Obtained from:	Apple Computer, Inc.
MFC after:	2 weeks
2003-06-13 00:14:07 +00:00
David E. O'Brien
11f0fab4fa Use C99 compatible ASM statements.
(untested, but existing state breaks
http://triangle.rtp.freebsd.org/~des/tinderbox-CURRENT-amd64-amd64.brief)
2003-06-10 21:17:55 +00:00
Tom Rhodes
0315901c7c Add an EXAMPLES section.
PR:		43899
Reviewed by:	des, ru
2003-06-10 20:41:18 +00:00
Juli Mallett
dfa13bbf27 Various cleanups of careless mistakes/omissions.
PR:		53149
Submitted by:	Lukas Ertl <l.ertl@univie.ac.at>
2003-06-10 18:36:16 +00:00
Juli Mallett
27fd747882 Left out the critical part of my "public domain" template, a notice saying
that this file is (these files are) in the public domain.

PR:		53149
2003-06-10 18:24:40 +00:00
Andrey A. Chernov
0c7fbc6c40 Remove transition period hack 2003-06-10 01:26:04 +00:00
Mike Makonnen
05e948d996 _thread_printf() is only used for debugging or in cases where something's
screwed beyond all help, so it can just skip the pthreads wrapper
for write(2) and call directly into it.
2003-06-09 17:58:15 +00:00
Alexander Leidinger
f970961773 Sanity check fd before using it as an array index.
Noticed by:	ted@NLnetLabs.nl (Ted Lindgreen)
Approved by:	ru
2003-06-09 16:45:37 +00:00
John Baldwin
dff6f51034 Remove stale reference to the deprecated USER_LDT option. The associated
code is always compiled into the kernel now.

Submitted by:	Hubert Tournier <hubert@frbsd.org>
PR:		docs/53068
2003-06-09 11:46:22 +00:00
Juli Mallett
e78ea9f724 Commit rudimentary libufs manual pages, except for that for
getino(3)/putino(3), inode.c has been reworked in Perforce to the point
where a manual page may not be accurate.  Certainly putino(3) has not
even been merged back yet.

These will need a lot of improvement for most applications, but they
document the API enough to get someone on their feet, most likely.  The
best documentation still exists in the form of libufs(3) consumers in the
base system.
2003-06-09 09:59:11 +00:00
Juli Mallett
b52f85e743 Remove ufs_disk_ctor and ufs_disk_dtor, they never came to fruition. I do
not know of any software using them, and there is no "published API" for
libufs, as it were.
2003-06-09 09:47:38 +00:00
Juli Mallett
1081253fa0 Reduce diffs with code in Perforce:
Parenthesise return values.
2003-06-09 09:32:29 +00:00
Ceri Davies
6efa541f23 Correct a typo.
MFC After:	2 days
2003-06-08 19:41:58 +00:00
Daniel Eischen
690f13f3c3 After selecting a thread to handle a signal and taking
its scheduling lock, make sure that the thread still has
the signal unmasked.

Make a debug statement conditional on debugging being
enabled.
2003-06-08 17:37:21 +00:00
Daniel Eischen
f91de797ce Insert threads at the end of the free thread list so that
the chance of getting the same thread id when allocating a
new thread is reduced.  This won't work if the application
creates a new thread for every time a thread exits, but
we're still within the allowances of POSIX.
2003-06-08 17:35:11 +00:00
Daniel Eischen
4d6f145a3b Provide a reference to __sys_write. The implementation uses this when
debugging is enabled so the symbol needs to be resolved before rtld
locking is enabled.  I may not really know what I'm talking about,
but it works.

Submitted by:	kan
2003-06-08 17:29:32 +00:00
Philippe Charnier
19677e1070 The .Fn function 2003-06-08 10:40:44 +00:00
Philippe Charnier
3c024cc85c The .Fn function 2003-06-08 10:34:00 +00:00
Philippe Charnier
e4f2c10b4c The .Fn function 2003-06-08 10:20:32 +00:00
Philippe Charnier
82f7b9cd41 Add section number with .Xr. .Xr -> .Vt changes. 2003-06-08 10:17:24 +00:00
Philippe Charnier
ab165955de The .Fn function 2003-06-08 10:13:50 +00:00
Philippe Charnier
7712c6658b .Xr p1003_1b moved to .St -p1003.1b-93 2003-06-08 10:11:13 +00:00
Philippe Charnier
fe71ab1cf4 .Xr -> .Lb for librairy. There is no manual page corresponding to .Xr. 2003-06-08 10:07:14 +00:00
Philippe Charnier
0d511e328f Add or correct section number in .Xr. Use .Vt or .Fn
instead of .Xr when needed
2003-06-08 10:01:52 +00:00
Philippe Charnier
9703a107f2 The .Fn function 2003-06-08 09:53:08 +00:00
Warner Losh
cedfd4f63f Don't force -L/usr/lib. This is incorrect because we should not be
looking at the host environment for anything.  This breaks building
-CURRENT on 4.x as well.

Submitted by: kan@
2003-06-08 03:58:20 +00:00
Scott Long
4e89f2d88f Sanity check the list obtained from the kern.disks sysctl so that Disk_Names()
doesn't get fooled into returning a bogus list.  This should fix sysinstall
from segfaulting when no disk devices are present.
2003-06-07 20:02:56 +00:00
Jun Kuriyama
3a624f5e23 Use
cat ${.ALLSRC} > ${.TARGET}
rather than
	ln -sf ${.ALLSRC} ${.TARGET}
not to depends on absolute-path of symbolic links.

Commented by:  marcel, obrien, bde
2003-06-06 13:46:55 +00:00
Poul-Henning Kamp
c6dd496cd9 Recognize the magic NODEV value.
Format other unknown devices consistently in hex.
2003-06-05 21:55:57 +00:00
Mark Murray
f2017a1921 Rename local variables to not mask global names of same name. This
fixes lots of lint(1) warnings.
2003-06-05 13:17:32 +00:00
Marcel Moolenaar
fee5c3f1f8 Make this compile without warnings on 64-bit architectures:
Don't cast thread_self() to int. Cast to uintptr_t. Pull in the
predefined printf format from <inttypes.h>
2003-06-04 20:38:54 +00:00
Marcel Moolenaar
f10382ac87 Make this compile without warnings on 64-bit architectures:
In recurse(), cast the pointer difference to int to match the format.
The difference is expected to fit in an int.
2003-06-04 20:36:08 +00:00
Mark Murray
2f8e800c38 Drop stale MAINTAINER bit. 2003-06-04 16:01:37 +00:00
David Xu
a05fa0abea Only init _thread_sigact once, needn't init it again after a fork().
Obtained from: deischen
2003-06-04 12:40:21 +00:00
David Xu
cd0a0c267b Despite whether threaded mode is turned on, always save thread's
signal mask.
2003-06-04 12:38:21 +00:00
Bruce Evans
c749b4f6dd Removed garbage:
- -elf in CFLAGS had no effect except to reduce portability.
- -elf in LDFLAGS had even less effect, since LDFLAGS is not used.
- -Wall in CFLAGS had no effect except to reduce portability and break
  overriding of WARNS, since the setting of WARNS implies -Wall.
2003-06-04 11:21:18 +00:00
Mike Makonnen
4dee39fea0 Make C applications statically compiled with libthr work. Previously,
an application compiled -static with libthr would dump core in
malloc(3) because the stub thread initialization routine in libc would
be used instead of the libthr supplied one.
2003-06-04 08:23:05 +00:00
Mike Makonnen
f833c84a8f If the library is not able to create a thread because resources
don't allow it at the moment, the correct thing to do is try again.
Otherwise, libthr would fail this test because it doesn't allow
an unlimited number of concurrent threads per application.
2003-06-04 08:16:32 +00:00
Robert Watson
44f5ca2f16 Document the new explicit listing API for extended attributes; note
that the old API (passing "" as the attribute name to the _get_
interface) is now deprecated (and was probably a bad idea).

Pointed out by:	Dominic Giampaolo <dbg@apple.com>
Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, Network Associates Laboratories
2003-06-04 04:00:26 +00:00
David Xu
e84a8d0d65 KMF_DONE is now in /sys/sys/kse.h, no longer need to define it here. 2003-06-04 03:22:59 +00:00
Hiten Pandya
8e9a665fde Document that kldload(2) can also return EEXIST.
Approved by: des (mentor)
2003-06-03 12:29:34 +00:00
Mike Makonnen
b9662ddd18 Teach recent changes in the umtx structure in the kernel to the libthr
initialiazer.

Found by:	tinderbox
2003-06-03 09:31:33 +00:00
David Xu
a4c69f224b Free memory of internal low level lock when mutex and condition variable
are destroyed.

Submitted by: tegge
2003-06-03 02:21:01 +00:00
Peter Wemm
3191d840e0 Cosmetic; record offsets used within jmpbuf 2003-06-02 22:37:53 +00:00
Peter Wemm
19816dec92 Update for amd64 after repocopy from i386/ 2003-06-02 22:30:59 +00:00
Peter Wemm
3aefe09423 Port libc_r to amd64, and turn it back on for amd64. It passes all of
the same src/lib/libc_r/test/* tests that the other platforms pass.
2003-06-02 22:22:52 +00:00
Peter Wemm
b8f8813c6e Fix sigsetjmp(). It helps if we do not try to save the old signal mask
to a random memory location.  Perl works a lot better with this.
2003-06-02 21:59:13 +00:00
Mark Murray
d8e82636a4 Tidy the code up a fraction. Re-release with a 2-clause BSD license
with the kind permission of the author/copyright holder.

Thanks to:	phk
2003-06-02 21:43:14 +00:00
Mark Murray
bf513f6958 Add a new hash type. This "NT-hash" is compatible with the password
hashing scheme used in Microsoft's NT machines. IT IS NOT SECURE!
DON'T USE IT! This is for the use of competent sysadmins only!

Submitted by:	Michael Bretterklieber
2003-06-02 19:29:27 +00:00
Mike Makonnen
cff6c3cab1 Unwind the _giant_mutex from pthread_detach(). When detaching a joiner thread
it's important the correct lock order is observed: lock first the joined and
then the joiner.
2003-06-02 11:01:00 +00:00
Mike Makonnen
4384412030 Consolidate static_init() and static_init_private into one function.
The behaviour of this function is controlled by the argument: private.
2003-06-02 10:04:18 +00:00
David E. O'Brien
a23e5f4d43 .S comments must be C comments, not ASM ones. 2003-06-02 02:32:56 +00:00
David E. O'Brien
e683295e39 Use C99 compatible ASM statements. 2003-06-02 02:32:22 +00:00
Robert Watson
778f8875c7 Revert accidental change: don't change the thread library for testing to
libthr.  Oops, sorry about that.

Submitted by:	"Simon L. Nielsen" <simon@nitro.dk>
2003-06-02 00:21:41 +00:00
Marcel Moolenaar
75fa7db991 o Fix a cut-n-paste bug. We were clobbering rp with gp...
o  Make sure the arguments to ctx_wrapper() are loaded from the
   backing store by forcing an underflow. Do this by making all
   registers in the register frame local.
2003-06-02 00:16:39 +00:00
Ruslan Ermilov
234dfc904a A new API function PacketAliasRedirectDynamic() can be used
to mark a fully specified static link as dynamic; i.e. make
it a one-time link.
2003-06-01 23:15:00 +00:00
Robert Watson
0bbe770d6f Include string.h for memset(). 2003-06-01 23:03:49 +00:00
Ruslan Ermilov
f1a529f3da Make the PacketAliasSetAddress() function call optional. If it
is not called, and no static rules match an outgoing packet, the
latter retains its source IP address.  This is in support of the
"static NAT only" mode.
2003-06-01 22:49:59 +00:00
Juli Mallett
d7ea49283c Match style of source and headers.
Submitted by:	bde
2003-06-01 21:35:27 +00:00
Ruslan Ermilov
9be025500d Assorted mdoc(7) fixes. 2003-06-01 19:41:49 +00:00
Ruslan Ermilov
0e35e492fc Assorted mdoc(7) fixes. 2003-06-01 19:19:59 +00:00
Andrey A. Chernov
9d793e98ec Add GBK encoding
PR:             51504
Submitted by:   Statue <statue@freebsd.sinica.edu.tw>
2003-06-01 15:30:56 +00:00
Poul-Henning Kamp
7e02e189ae Add the part of the last commit which cvs appearantly didn't like
the first time.
2003-06-01 15:05:22 +00:00
Dag-Erling Smørgrav
2d2b70f60b Add openpam_readline(3). 2003-06-01 12:54:51 +00:00
Dag-Erling Smørgrav
008c1ace7b Retire pam_wheel(8) (which has been disconnected for quite a while) and
pam_ftp(8).
2003-06-01 11:50:35 +00:00
Poul-Henning Kamp
b600adca79 Clarify the code a bit.
Submitted by:	Nadav Eiron <nadav@TheEirons.org>
2003-06-01 09:16:50 +00:00
Juli Mallett
283d23cbba Make prototype match code with regard to constness of args to the
function pointer passed in.
2003-06-01 06:43:39 +00:00
Marcel Moolenaar
abbb0b30ce Build libthr by default on ia64. 2003-06-01 00:32:21 +00:00
Dag-Erling Smørgrav
ae1e82627a Don't build pam_std_option(). 2003-05-31 23:38:16 +00:00
Jens Schweikhardt
f8f6970098 Fix grammar bogons.
MFC after:	3 days
2003-05-31 21:14:41 +00:00
Marcel Moolenaar
fae3c3b7eb Rough implement of makecontext() needed to support libthr.
o  Up to 8 arguments are allowed. This is the number of arguments
   passed in registers. Subsequent registers are passed on the stack.
   Trying to deal with this is not easy in C and likely forces us to
   use assembly code. Let's avoid that for now. There's no indication
   that more than 8 arguments is a strong requirement (Linux also has
   an 8 argument limit).
o  We expect that the stack base is 16-byte aligned and the stack
   size is a multiple of 16-byte. We bomb out if this is not the case.
   We probably want to be less strict by enforcing it ourselves. For
   now it's better to not hide gross alignment bogons by silently
   correcting it.
2003-05-31 19:42:51 +00:00
Mike Makonnen
31b8681181 Hook libthr to the build. It's currently built only for i386 and
a NOLIBTHR knob will prevent it from being built.
2003-05-31 18:43:17 +00:00
Dag-Erling Smørgrav
4d6991c692 Update copyright dates. 2003-05-31 17:19:03 +00:00
Dag-Erling Smørgrav
f7d39b0967 Remove pam_std_option() and related functions. Add #defines for common
options.
2003-05-31 16:56:35 +00:00
Dag-Erling Smørgrav
545aa47101 Remove all instances of pam_std_option() 2003-05-31 16:55:07 +00:00
Dag-Erling Smørgrav
d462d3923b Introduce pam_guest(8) which will replace pam_ftp(8). 2003-05-31 16:52:58 +00:00
Mike Makonnen
6e1aa51e9e I botched one of my committs in the last round. Fix it. 2003-05-31 14:38:22 +00:00
Ruslan Ermilov
61fa6d584f Fixed another bug in the threaded close() call; clear the
stale stdio descriptors flags.

PR:		bin/51535
Submitted by:	Enache Adrian <enache@rdslink.ro>
Reviewed by:	deischen
Approved by:	re (scottl)
2003-05-31 05:23:20 +00:00
Ruslan Ermilov
d635dc4671 If an application closes one of its stdio descriptors (0..2),
an excessive close() on one of these descriptors would cause
a memory for this descriptor to be allocated in the internal
descriptor table.  When this descriptor gets used again, e.g.
through the call to open() or socket(), the descriptor would
be erroneously left in the blocking mode, and the whole
application would get stuck on a blocking operation, e.g.,
in accept(2).

Prevent this bug from happening by disallowing close() against
non-active descriptors (return -1 and set errno to EBADF in
this case).

Reviewed by:	deischen
Approved by:	re (scottl)
2003-05-31 05:20:44 +00:00
David Xu
9abece6475 Save THR_FLAGS_IN_TDLIST in signal frame, otherwise if a thread received
a signal will can not be removed from thread list after it exited.

Reviewed by: deischen
Approved by: re (jhb)
2003-05-30 14:50:16 +00:00
Thomas Moestl
6bc615b0a1 Fix a sizeof error in __bt_put: when writing they key and data sizes
to a buffer in the big key/data case, memmove() was used on pointers
to size_ts, but only sizeof(u_int32_t) bytes where copied. This broke
on big_endian architectures where sizeof(size_t) > sizeof(u_int32_t).

This bug broke portupgrade (by way of ruby_bdb1) on sparc64.

Approved by:	re (rwatson)
2003-05-30 11:05:08 +00:00
Alexander Kabaev
8c22e2f77b Add an stub for _rtld_thread_init. This is a part I missed in
my last commit.

Approved by:	re (scottl)
2003-05-30 00:58:37 +00:00
Alexander Kabaev
84d55c7fad Attempt to eliminate PLT relocations from rwlock aquire/release
path, making them suitable for direct use by the dynamic loader.

Register libpthread-specific locking API with rtld on startup.

This still has some rough edges with signals which should be
addresses later.

Approved by:	re (scottl)
2003-05-30 00:21:52 +00:00
Daniel Eischen
43dd76d242 Call the __sys_sigprocmask(the system call) when sigprocmask()
is called and the application is not threaded.  This works around
a problem when an application that hasn't yet become threaded
tries to jump out of a signal handler.

Reported by:	mbr
Approved by:	re@ (rwatson)
2003-05-30 00:09:22 +00:00
Martin Blapp
65d06145a2 Don't return -1 and abort if msg.msg_controllen is 0. For
some strange reason recvmsg() never sets errno to EAGAIN
on a non-blocking socket and just returns 0.

Reviewed by:	jhb
Approved by:	re
2003-05-29 22:06:06 +00:00
Mike Makonnen
1b2a19ce0e Make the mutex static initializers look more like the one for
condition variables. Cosmetic.

Explicitly compare against PTHREAD_MUTEX_INITIALIZER. We shouldn't
encourage calls to the mutex functions with null pointers to mutexes.

Approved by:	re/jhb
2003-05-29 20:58:31 +00:00
Mike Makonnen
41f2bd859f Use a static lock to ake sure pthread_cond_* functions called
from multiple threads don't initialze the same condition variable
more than once.

Explicitly compare cond pointers with PTHREAD_COND_INITIALIZER instead
of NULL. Just because it happens to be defined as NULL is no reason
to encourage the idea that people can call those functions with
NULL pointers to a condition variable.

Approved by:	re/jhb
2003-05-29 20:54:00 +00:00
Mike Makonnen
0e335eaeb5 Missing unlock.
Approved by:	re/jhb
2003-05-29 20:49:17 +00:00
Mike Makonnen
b3cdf7ae2e Don't hold the active thread list lock when signaling the gc thread.
The dead list thread is sufficient for synchronization.

Retire the arch_id (ldt array slot) in the gc thread instead of the
doing it in the thread itself.

Approved by:	re/jhb
2003-05-29 20:46:53 +00:00
Mike Makonnen
981f4968f0 It's unnecessary to lock the thread during creation. Simply extend
the scope of the active thread list lock.

Approved by:	re/jhb
2003-05-29 20:40:50 +00:00
Martin Blapp
e5cd12556d Fix a problem introduced in the last commit. sa and cm
are not initialized at this place. Move the initializing
before the non-blocking check.

Submitted by:	Marius Strobl <marius@alchemy.franken.de>
Reviewed by:	jhb
Approved by:	re
2003-05-29 19:43:22 +00:00
Daniel Eischen
28362a5c80 Don't really spin on a spinlock; silently convert it to the same
low-level lock used by the libpthread implementation.  In the
future, we'll eliminate spinlocks from libc but that will wait
until after 5.1-release.

Don't call an application signal handler if the handler is
the same as the library-installed handler.  This seems to
be possible after a fork and is the cause of konsole hangs.

Approved by:	re@ (jhb)
2003-05-29 17:10:45 +00:00
Martin Blapp
aee2eba2d1 If AF_LOCAL is used, we need to use __msgread_withcred() instead of
just read() in non-blocking mode too. The reason is obvious. NetBSD
uses a complete different way to get the credentials so this patch
only applies to FreeBSD.

Reviewed by:	rwatson
Approved by:	re
2003-05-28 09:16:35 +00:00
Martin Blapp
22e4d31a81 Fix amd(8) clients, if a FreeBSD mountd(8) server is used.
Remove the special treatment of non-blocking mode in
the "look ahead function" xdrrec_eof(). It currently
assumes that the last read() in a row of several reads
does not have zero lenght. If this is the case, svc_vc_stat()
does return XPRT_MOREREQS, and the RPC-request aborts because
there is no data to read anymore.

To fix this, go back to the original version of the code
for non-blocking mode until NetBSD comes up with another
possible fix like this one in xdrrec_eof()

	if (rstrm->last_frag && rstrm->in_finger == rstrm->in_boundry) {
		return TRUE;
	}

Return always FALSE in set_input_fragment() for non-blocking
mode. Since this was not used in FreeBSD, I omitted it at the
first time. Now we use this function and we should always
return FALSE for it.

Reviewed by:	rwatson
Approved by:	re
2003-05-28 09:13:09 +00:00
Max Khon
f4203da86c Fix stripping last path component when only one path component left.
PR:		52686
MFC after:	1 day
2003-05-28 08:23:01 +00:00
Mike Makonnen
a09d02f780 Minimize the potential for deadlocks between an exiting thread and it's
joiner by making sure all locks and unlocks occur in the same order. For
the record the lock order is: DEAD_LIST, THREAD_LIST, exiting thread, joiner
thread.

Approved by: re/rwatson
2003-05-27 21:48:42 +00:00
Mike Makonnen
ee98e9be9f Revert part of the last commit. I don't know what I was smoking.
Approved by: re/rwatson
2003-05-27 21:43:49 +00:00
Mike Makonnen
ca1c469cc7 Decouple the thread stack [de]allocating functions from the 'dead threads list'
lock. It's not really necessary and we don't need the added complexity
or potential for deadlocks.

Approved by:	re/blanket libthr
2003-05-26 00:37:07 +00:00
Mike Makonnen
2387af9962 Revise the unlock order in _pthread_join(). Also, if the joined
thread is not dead, the join loop is guaranteed to execute at least
once, so there is no need to pick up the thread list lock after
we return from suspenstion only to release it after the loop.

Approved by:	re/blanket libthr
2003-05-26 00:28:49 +00:00
Mike Makonnen
12c407a424 Return gracefully, rather than aborting, when the maximum concurrent
threads per process has been reached. Return EAGAIN, as per spec.

Approved by:	re/blanket libthr
2003-05-25 22:40:57 +00:00
Mike Makonnen
d39d651258 _pthread_cancel() breaks the normal lock order of first locking the
joined and then the joiner thread. There isn't an easy (sane?) way
to make it use the correct order without introducing races involving
the target thread and finding which (active or dead) list it is on. So,
after locking the canceled thread it will try to lock the joined thread
and if it fails release the first lock and try again from the top.

Introduce a new function, _spintrylock, which is simply a wrapper arround
umtx_trylock(), to help accomplish this.

Approved by: re/blanket libthr
2003-05-25 08:48:11 +00:00
Mike Makonnen
4393f2c4ec Part of the last patch.
Modify the thread creation and thread searching routine
to lock the thread lists with the new locks instead of GIANT_LOCK.

Approved by:	re/blanket libthr
2003-05-25 08:35:37 +00:00
Mike Makonnen
71d09bc86a Start locking up the active and dead threads lists. The active threads
list is protected by a spinlock_t, but the dead list uses a pthread_mutex
because it is necessary to synchronize other threads with the garbage
collector thread. Lock/Unlock macros are used so it's easier to make
changes to the locks in the future.

The 'dead thread list' lock is intended to replace the gc mutex.
This doesn't have any practical ramifications. It simply makes it
clearer what the purpose of the lock is. The gc will use this lock,
instead of the gc mutex, to synchronize access to the dead list with
other threads.

Modify _pthread_exit() to use these two new locks instead of GIANT_LOCK,
and also to properly lock and protect thread state changes,
especially with respect to a joining thread.

The gc thread was also re-arranged to be more organized and less nested.

_pthread_join() was also modified to use the thread list locks. However,
locking and unlocking here needs special care because a thread could find
itself in a position where it's joining an exiting thread that is
waiting on the dead list lock, which this thread (joiner) holds. If the
joiner doesn't take care to lock *and* unlock in the same order they
(the joiner and the joinee) could deadlock against each other.

Approved by:	re/blanket libthr
2003-05-25 08:31:33 +00:00
Mike Makonnen
6a1899ed5c The libthr code makes use of higher-level primitives (pthread_mutex_t and
pthread_cond_t) internaly in addition to the low-level spinlock_t. The
garbage collector mutex and condition variable are two such examples. This
might lead to critical sections nested within critical sections. Implement
a reference counting mechanism so that signals are masked only on the first
entry and unmasked on the last exit.

I'm not sure I like the idea of nested critical sections, but if
the library is going to use the pthread primitives it might be necessary.

Approved by:	re/blanket libthr
2003-05-25 07:58:22 +00:00
Marcel Moolenaar
9e14b94e43 The struct mcontext has changed. It's using the register sets. Bring
this in line.
2003-05-25 06:49:19 +00:00
Ruslan Ermilov
734ac3b543 mdoc(7) fixes.
Approved by:	re (blanket)
2003-05-24 19:53:08 +00:00
Peter Wemm
b3aa27a531 Repair PIC mode. It seems I was a bit too excited about the
implications of native PC relative addressing.
2003-05-24 17:35:23 +00:00
Daniel Eischen
1cb570c531 Change low-level locking a bit so that we can tell if
a lock is being waitied on.

Fix a races in join and cancellation.

When trying to wait on a CV and the library is not yet
threaded, make it threaded so that waiting actually works.

When trying to nanosleep() and we're not threaded, just
call the system call nanosleep instead of adding the thread
to the wait queue.

Clean up adding/removing new threads to the "all threads queue",
assigning them unique ids, and tracking how many active threads
there are.  Do it all when the thread is added to the scheduling
queue instead of making pthread_create() know how to do it.

Fix a race where a thread could be marked for signal delivery
but it could be exited before we actually add the signal to it.

Other minor cleanups and bug fixes.

Submitted by:	davidxu
Approved by:	re@ (blanket for libpthread)
2003-05-24 02:29:25 +00:00
Mike Makonnen
a224a3919d Lock the cond queue (condition variables):
Access to the thread's flags and state is protected by
_thread_critical_enter/exit(). When a thread is signaled with a condition
its state must be protected by locking it and disabling
signals before it is taken of the waiters' queue.

Move the implementation of pthread_cond_signal() and pthread_cond_broadcast()
into one function, cond_signal(). Its behaviour is determined by the
last argument, int broadcast. If this is set to 1 it will remove all
waiters, otherwise it will wake up only the first waiter thread.

Remove an extraneous call to pthread_testcancel().

Approved by:	re/blanket libthr
2003-05-24 01:02:16 +00:00
Mike Makonnen
59a47b31d0 Add two functions: _spinlock_pthread() and _spinunlock_pthread()
that take the address of a struct pthread as their first argument.
_spin[un]lock() just become wrappers arround these two functions.
These new functions are for use in situations where curthread can't be
used. One example is _thread_retire(), where we invalidate the array index
curthread uses to get its pointer..

Approved by:	re/blanket libthr
2003-05-23 23:39:31 +00:00
Mike Makonnen
b32a99e5f4 EDOOFUS
Prevent one thread from messing up another thread's saved signal
mask by saving it in struct pthread instead of leaving it as a
global variable. D'oh!

Approved by:	re/blanket libthr
2003-05-23 10:28:13 +00:00
Mike Makonnen
7d9d7ca2ed Make WARNS2 clean. The fixes mostly included:
o removed unused variables
	o explicit inclusion of header files
	o prototypes for externally defined functions

Approved by:    re/blanket libthr
2003-05-23 09:48:20 +00:00
Mike Makonnen
4e3f7b6ede note to self: do not confuse void* with int.
Approved by:	re/blanket libthr
2003-05-23 08:13:24 +00:00
Mike Barcroft
6f9622a926 Fix two misuses of __BSD_VISIBLE.
Submitted by:	bde
Approved by:	re
2003-05-22 17:07:57 +00:00
Ruslan Ermilov
3a5146d9e2 Assorted mdoc(7) fixes.
Approved by:	re (blanket)
2003-05-22 13:02:28 +00:00
Mike Makonnen
509d72c4b9 o Make the defenition of _set_curthread() match its declaration
in thr_private.h

o Lock down the ldt_entries array and ldt_free, which points to
  the next free slot. As noted in the comments, it's necessary
  to special case the initial_thread because %gs is not setup
  for it yet. This is ok because that early in the program there
  won't be any reentrancy issues anyways.

Approved by:	re/blanket libthr
2003-05-21 08:21:24 +00:00
Mike Makonnen
6439d4c286 Insert a debugging aid:
When in either the mutex or cond queue we notice that the thread
 is already on one of the queues, don't just simply abort(). Print
 out the thread's identifiers and what queue it was on.

Approved by: markm/mentor, re/blanket libthr
2003-05-21 03:41:07 +00:00
Mike Makonnen
5ccf23715a Re-enable the garbage collector thread in anticipation of further
locking work. I can't see anything obviously wrong with it (other than
the need to update the locking).

Approved by: markm/mentor, re/blanket libthr
2003-05-21 03:34:54 +00:00
Mike Makonnen
f97591bf25 When a thread exits it does not return from the kernel unless it
is the *only* remaining thread in the application, in which case we
should not core dump, and instead exit gracefully.

Approved by: markm/mentor, re/blanket libthr
2003-05-21 03:29:18 +00:00
Mike Makonnen
3f07b4bcbd The thread id was being set *before* zeroing out the thread. Reverse
the order.

Approved by: markm/mentor, re/blanket libthr
2003-05-21 03:22:36 +00:00
Mike Makonnen
9dc6e7848f Move a misplaced comment.
Approved by:	markm/mentor (implicit), re/blanket libthr
2003-05-20 18:48:41 +00:00
Daniel Eischen
28f318b941 Eek, staticize a couple of functions that shouldn't
be external (initialize()!).

Remove cancellation points from _pthread_cond_wait and
_pthread_cond_timedwait (single underscore versions are
libc private functions).  Point the weak reference(!) for
these functions to the versions with cancellation points.

Approved by:	re@(blanket till 5/19)
Pointed out by:	kan (cancellation point bug)
2003-05-19 23:04:50 +00:00
Dag-Erling Smørgrav
7691f66abf Retire the useless NOSECURE knob.
Approved by:	re (scottl)
2003-05-19 15:52:01 +00:00
Ruslan Ermilov
aba60fa66b Fixed troff(1) and mdoc(7) warnings.
Approved by:	re (blanket)
2003-05-18 21:05:22 +00:00
Martin Blapp
f8af072548 Fix a simple bug that prevents svc_tli_create to bind to the address
specified by caller.

NetBSD rev. 1.6

Reviewed by:	rwatson
Approved by:	rwatson (re)
Obtained from:	NetBSD
2003-05-18 15:07:25 +00:00
Ruslan Ermilov
0b00d54eed Moved libgeom.so dependencies to where they belong.
Reviewed by:	phk
Approved by:	re (scottl)
2003-05-17 19:05:17 +00:00
Marcel Moolenaar
f2c49dd248 Revamp of the syscall path, exception and context handling. The
prime objectives are:
o  Implement a syscall path based on the epc inststruction (see
   sys/ia64/ia64/syscall.s).
o  Revisit the places were we need to save and restore registers
   and define those contexts in terms of the register sets (see
   sys/ia64/include/_regset.h).

Secundairy objectives:
o  Remove the requirement to use contigmalloc for kernel stacks.
o  Better handling of the high FP registers for SMP systems.
o  Switch to the new cpu_switch() and cpu_throw() semantics.
o  Add a good unwinder to reconstruct contexts for the rare
   cases we need to (see sys/contrib/ia64/libuwx)

Many files are affected by this change. Functionally it boils
down to:
o  The EPC syscall doesn't preserve registers it does not need
   to preserve and places the arguments differently on the stack.
   This affects libc and truss.
o  The address of the kernel page directory (kptdir) had to
   be unstaticized for use by the nested TLB fault handler.
   The name has been changed to ia64_kptdir to avoid conflicts.
   The renaming affects libkvm.
o  The trapframe only contains the special registers and the
   scratch registers. For syscalls using the EPC syscall path
   no scratch registers are saved. This affects all places where
   the trapframe is accessed. Most notably the unaligned access
   handler, the signal delivery code and the debugger.
o  Context switching only partly saves the special registers
   and the preserved registers. This affects cpu_switch() and
   triggered the move to the new semantics, which additionally
   affects cpu_throw().
o  The high FP registers are either in the PCB or on some
   CPU. context switching for them is done lazily. This affects
   trap().
o  The mcontext has room for all registers, but not all of them
   have to be defined in all cases. This mostly affects signal
   delivery code now. The *context syscalls are as of yet still
   unimplemented.

Many details went into the removal of the requirement to use
contigmalloc for kernel stacks. The details are mostly CPU
specific and limited to exception_save() and exception_restore().
The few places where we create, destroy or switch stacks were
mostly simplified by not having to construct physical addresses
and additionally saving the virtual addresses for later use.

Besides more efficient context saving and restoring, which of
course yields a noticable speedup, this also fixes the dreaded
SMP bootup problem as a side-effect. The details of which are
still not fully understood.

This change includes all the necessary backward compatibility
code to have it handle older userland binaries that use the
break instruction for syscalls. Support for break-based syscalls
has been pessimized in favor of a clean implementation. Due to
the overall better performance of the kernel, this will still
be notived as an improvement if it's noticed at all.

Approved by: re@ (jhb)
2003-05-16 21:26:42 +00:00
Daniel Eischen
fd626336fd Add a method of yielding the current thread with the scheduler
lock held (_thr_sched_switch_unlocked()) and use this to avoid
dropping the scheduler lock and having the scheduler retake the
same lock again.

Add a better way of detecting if a low-level lock is in use.

When switching out a thread due to blocking in the UTS, don't
switch to the KSE's scheduler stack only to switch back to
another thread.  If possible switch to the new thread directly
from the old thread and avoid the overhead of the extra
context switch.

Check for pending signals on a thread when entering the scheduler
and add them to the threads signal frame.  This includes some
other minor signal fixes.

Most of this was a joint effor between davidxu and myself.

Reviewed by:	davidxu
Approved by:	re@ (blanket for libpthread)
2003-05-16 19:58:30 +00:00
Tim J. Robbins
6e7988b9c5 Catch up with the renaming of the "union" filesystem to "unionfs".
Fixes a problem where directory entries could show up twice: once
on the top layer of the union stack, and once on the bottom layer.

Approved by:	re (rwatson)
2003-05-16 02:15:07 +00:00
Mike Makonnen
dd3b229e2c Do some cleanup with respect to condition variables. The implementation
of pthread_cond_timedwait() is moved into cond_wait_common().
Pthread_cond_wait() and pthread_cond_timedwait() are now wrappers around
this function. Previously, the former called the latter with the abstime
pointing to 0 time. This violated Posix semantics should an application
have reason to call it with that argument because instead or returning
immediately it would have waited indefinitely for the cv to be signaled.

Approved by:	markm/mentor, re/blanket libthr
Reviewed by:	jeff
2003-05-15 18:17:13 +00:00
Mike Makonnen
6da7f4937e o Make the setting/checking of cancel state atomic with
respect to other threads and signal handlers by moving to
  the _thread_critical_enter/exit functions.

o Introduce an static function, testcancel(), that is used by
  the other functions in this module. This allows it to make
  locking assumptions that the top-level functions can't.

o Rework the code flow a bit to reduce indentation levels.

Approved by:	markm/mentor, re/blanket libthr
Reviewed by:	jeff
2003-05-15 17:56:18 +00:00
John Baldwin
840558b971 s/procsig/sigacts/ to catch up to procsig and sigacts changes in the kernel.
Approved by:	re (scottl)
2003-05-14 15:01:20 +00:00
Peter Wemm
e472fbeee2 Bandaid for world. jhb gets the pointy hat here and he needs to look at
this.

Approved by:   re (scottl)
2003-05-14 07:28:43 +00:00
Doug Barton
336c22c598 * The copy of the stat struct in the man page has rotted, so remove it.
Those who really need this information can find it in the include file.

* Include a succinct description of the st_birthtime field.

Approved by:	re (bmah)
2003-05-13 08:10:05 +00:00
Hiten Pandya
4a49423d71 Following MLINKS added, which point to host_access(3):
- hosts_ctl(3), hosts_access(3), request_init(3),
	  request_set(3).

PR: docs/52000
Submitted by: Simon L. Nielsen <simon@nitro.dk>
Approved and Reviewed by: des (mentor), re (scottl)
2003-05-12 21:59:16 +00:00
Mike Makonnen
479778b07f msg2 2003-05-12 10:40:53 +00:00
Mike Makonnen
c984b5a72a msg1 2003-05-12 10:34:01 +00:00
Peter Wemm
6b22ec82bf Update ldexp.c for amd64. 2003-05-10 00:47:52 +00:00
David Schultz
b7412bf571 Add a comment describing why it's important for the values in this
file to be correct, and how to generate them automatically.

Caused much pain and suffering for:	peter
2003-05-08 13:50:44 +00:00
Peter Wemm
0b1bb81ae6 SIG_SETMASK is 3, not 1. Sigh. 2003-05-08 07:41:24 +00:00
Peter Wemm
7ef6516c60 Fix an embarresing transcription error from i386 to amd64. Put the arguments
to sigprocmask(2) int the correct order. *blush*.
For sigsetjmp(), match up the pushq/popq in the non-savemask case.
2003-05-08 06:25:03 +00:00
Peter Wemm
dffecce67c Tidy up modf.S and make it actually work. It wasn't extracting
the value out of ST(0) before copying it to %xmm0.  Also remove bogus stack
frame and work in the red zone.
2003-05-08 03:19:37 +00:00
Peter Wemm
74b0b3cfcb Fix typo, even though this is unused. 2003-05-08 00:02:47 +00:00
Peter Wemm
c48f718c25 Like ia64, amd64 has got a 16 byte sized and aligned 'long double'.
Obtained from:	re (blanket amd64)
2003-05-08 00:02:03 +00:00
Peter Wemm
cf2720dda4 Turn off alloca.S - it cannot possibly work like this since on AMD64, gcc
doesn't use stack frames.  It uses offsets relative to %rsp, not %rbp.  So
we cannot just change %rsp like this.

Approved by:	re (blanket amd64)
2003-05-07 23:49:24 +00:00
Peter Wemm
be78acdf64 Actually use the correct values for AMD64. It is a 64 bit platform,
configure gdtoa as such.
2003-05-07 23:48:05 +00:00
John Baldwin
664234c6e2 Properly cleanup the stack before jumping to cerror() if rfork(2) fails.
Submitted by:	Igor Sysoev <is@rambler-co.ru>
Approved by:	re (scottl)
2003-05-07 17:23:25 +00:00
Mike Makonnen
a260623c5f Fix a null dereference leading to a core dump when
the number of threads exceeds the number of open slots
in ldt_entries[].

Approved by:	markm (mentor)(implicit)
Reviewed by:	jeff
2003-05-06 02:33:49 +00:00
Mike Makonnen
ae0df91f34 o Correct a debug message that refered to the wrong function
o Remove an unncecesary if clause

Approved by:	markm (mentor)(implicit)
Reviewd by:	jeff
2003-05-06 02:30:52 +00:00
Daniel Eischen
07e6b1c7a3 Make pthread_join() async-cancel-safe. David was going to commit
this, but I think he's asleep and want to be sure it gets in before
the freeze.

Submitted by:	davidxu
2003-05-06 00:02:54 +00:00
Dag-Erling Smørgrav
8b48559cff OpenPAM is WANRS6-clean. 2003-05-05 21:15:35 +00:00
Mark Murray
dbf104e68d Turn MAKE_KERBEROS5 into NO_KERBEROS by negating the logic. Some extra
cleanups were necessary in release/Makefile, and the tinderbox code
was syntax checked, not run checked.
2003-05-05 07:58:44 +00:00
Murray Stokely
eb8b21f78b Backout last commit. It is redundant in -CURRENT.
Pointed out by:	David Schultz
2003-05-05 06:25:03 +00:00
David Xu
f508d26091 call dump_queues() only when DEBUG_THREAD_KERN is defined, save some
cpu cycles.
2003-05-05 05:01:19 +00:00
Daniel Eischen
e8baaa7062 Replace use of a spinlock with a mutex. 2003-05-04 22:36:46 +00:00
Daniel Eischen
c72cd7c9e2 Protect against a race between granting a lock and accessing
other parts of the lock.

Submitted by:	davidxu
2003-05-04 22:29:09 +00:00
Murray Stokely
d8082d11aa Note that the idletime setting is not enforced.
PR:		docs/40952
MFC After:	3 days
2003-05-04 21:35:41 +00:00
David E. O'Brien
1628730478 This is now Gcc 3.3 WARNS 6 clean. 2003-05-04 18:34:00 +00:00
David E. O'Brien
bbe4999bd1 Set abitag __unused. 2003-05-04 18:33:26 +00:00
Daniel Eischen
40791d9d15 Fix suspend and resume.
Submitted (in part) by:	Kazuaki Oda <kaakun@highway.ne.jp>
2003-05-04 16:17:01 +00:00
Murray Stokely
df788a526f Document the login-backoff and login-retries capabilities.
PR:		docs/51397
MFC After:	3 days
2003-05-04 06:43:24 +00:00
David Xu
99c883294c Handle thread canceled case, it is same as signal caused backout,
but will break out of loop.
2003-05-02 11:39:00 +00:00
Mark Murray
aaa2c2ab24 Trasmute moer "krb5" distibutions into "crypto". 2003-05-01 21:21:15 +00:00
Tom Rhodes
a460614661 Use the .Dl macro.
Discussed with:	mdoc(7) officer ru
2003-05-01 20:27:59 +00:00
Ruslan Ermilov
a52672e938 Build non-crypto telnet(1) and telnetd(8) if NO_OPENSSL is defined.
Submitted by:	Marius Strobl <marius@alchemy.franken.de>
2003-05-01 19:38:15 +00:00
Tom Rhodes
7b98ad3005 State the fact that the range is twice the traditional RAND_MAX.
Add an EXAMPLES section.

PR:		48493
Submitted by:	Paul Herman <pherman@frenchfries.net> (original version)
2003-05-01 19:09:16 +00:00
Jacques Vidrine
d05090827f Back out the `hiding' of strlcpy and strlcat. Several people
vocally objected to this safety belt.
2003-05-01 19:03:14 +00:00
David E. O'Brien
d37f19f084 Convert the i386 alloca(3) to the x86-64 ISA.
Alignment hack from:	NetBSD
2003-05-01 16:04:38 +00:00
Dag-Erling Smørgrav
6c0510dc2f Use C99-style varadic macros instead of the non-standard gcc syntax. 2003-05-01 15:08:55 +00:00
Dag-Erling Smørgrav
e50fb9d500 Mark libpam as c99- and WARNS5-clean. 2003-05-01 14:55:06 +00:00
Dag-Erling Smørgrav
60a87a5fa2 Mark libfetch as c99-clean. Always build at WARNS level 2 rather than
juggling with levels 2 and 3, as this has lead to world breakage for
NOCRYPT users in the past.
2003-05-01 14:39:43 +00:00
Peter Wemm
8e80f8a438 AMD64 support (another IEEEFP platform) 2003-04-30 21:06:30 +00:00
Peter Wemm
a1de871d26 AMD64 support; repocopied from i386 2003-04-30 21:05:33 +00:00
Peter Wemm
2512cd4e8f Teach libdisk that AMD64 works just like i386 2003-04-30 21:03:16 +00:00
Peter Wemm
f7f1bb1485 Add __amd64__ to the list of things that use IEEEFP 2003-04-30 19:32:25 +00:00
Peter Wemm
5aed8cd5f6 Tell malloc.c that AMD64 uses the same pagesize as i386. 2003-04-30 19:30:34 +00:00
Peter Wemm
0f055c5bd8 Add __amd64__ to the list of things that use HIDENAME() to hide minbrk 2003-04-30 19:29:02 +00:00
Peter Wemm
1b376078fd Update for AMD64. repocopied from i386-elf/crt1.c. Deal with regparm
argument passing rather than stack based args.  The kernel passes the
base of the argument/env vector in %rdi (arg1).
2003-04-30 19:27:07 +00:00
Peter Wemm
d95bef1cef Turn off libstand for amd64 for the time being. It is built in i386
mode, and we do not need the complications for now.
2003-04-30 18:42:25 +00:00