Disable sanitizers for libm and librt

The sanitizers are designed to use pristine OS versions of these libraries,
install interceptors for public symbols in them and link with them in every
sanitized executable.

Having unmodified base libraries (c, m, rt, pthread) also makes the system
usable with programs linking with them and without sanitization, as there
are no fatal issues during the resolving of missing symbols.

The remaining libraries like libutil, libintl etc are prebuilt with
sanitization and all their users in the MKSANITIZER=yes distribution are
required to use the same sanitizer.

libc and libpthread are already marked with the NOSANITIZER flag.

branches: 1.20.12;
add missing stuff for the affinity calls (Rocky Hotas)

branches: 1.19.2;
man page for sched_protect (Charles Cui, GSoC 2016)

Add a man page for shm_open(3) and shm_unlink(3). Obtained from FreeBSD,
with various modifications.

Add shm_open(3) and shm_unlink(3) to support POSIX shared memory objects.
They are implemented using tmpfs (mounted at /var/shm).

Discussed on tech-{kern,userlevel} (quite a while ago).

branches: 1.16.2;
These directories default to WARNS?=5

Implement sem_timedwait.

branches: 1.14.2;
Add the same ppc64 hack that libposix needs.

Build links also for mq_timedreceive(3) and mq_timedsend(3).

Add mq(3), a manual page for the POSIX message queues. This tries to act as
a short introduction to the rationale and API, noting also some pros and cons.

rmind@: basically ok. Please feel free to adjust, correct, and extend.

Add an introductory manual page for the POSIX asynchronous I/O, aio(3).

This is hopefully enough for a reader to get started with the aio.

ok rmind@

Manuals describing the interface of POSIX message queues.
Taken from The Open Group, with various modifications.
Thanks <wiz> for improvements!

branches: 1.9.2;
use libc/libcincludes.mk.

Move scheduling functions from librt to libc.
Fixes PR/38657.

branches: 1.7.4;
Add pset(3) manual page, and appropriate links.
Thanks <wiz> for review and fixes!

Add sched(3) manual page, and appropriate links.
Thanks <wiz> for review and fixes!

branches: 1.5.2;
Implementation of processor-sets, affinity and POSIX real-time extensions.
Add schedctl(8) - a program to control scheduling of processes and threads.

Notes:
- This is supported only by SCHED_M2;
- Migration of LWP mechanism will be revisited;

Proposed on: <tech-kern>. Reviewed by: <ad>.

branches: 1.4.4;
- Add aio_fsync(3) manual page. Reviewed and improved by <wiz>.
- Also, fix the accident duplicate of aio_suspend(3) entry.

Add aio_cancel(3), aio_error(3), aio_read(3), aio_return(3), aio_suspend(3),
aio_write(3) and lio_listio(3) man-pages for asynchronous I/O.
Taken from FreeBSD with modifications for NetBSD implementation.

wizd, please! :)

Import of POSIX Asynchronous I/O.
Seems to be quite stable. Some work still left to do.

Please note, that syscalls are not yet MP-safe, because
of the file and vnode subsystems.

Reviewed by: <tech-kern>, <ad>

Add librt, which provides POSIX 1003.1b Real-time extensions not
present in libc. Currently includes 1003.1b semaphores.

branches: 1.1.2;
file Version.map was initially added on branch agc-symver.

Remove the paragraph about the used notification mechanism. Instead,
reference sigevent(3). Clarify the file offset discussion.

Reference only aio(3) in SEE ALSO as it is the central placeholder. Note
timespec(3). Markup: -width Er (not -width Dv), .Dv NULL (not null), etc.

Fix a typo of a typo, and use .Sq in couple of places.

Writing, rereading, writing, reareading, and yet still one typo.

Add an introductory manual page for the POSIX asynchronous I/O, aio(3).

This is hopefully enough for a reader to get started with the aio.

ok rmind@

remove RESTRICTIONS section, which seems unrelated to our implementation

Reference only aio(3) in SEE ALSO as it is the central placeholder. Note
timespec(3). Markup: -width Er (not -width Dv), .Dv NULL (not null), etc.

Various improvements: sort errors; use more
markup; fixes for HTML and PostScript output.

Remove pointless AUTHORS sections.

Add aio_cancel(3), aio_error(3), aio_read(3), aio_return(3), aio_suspend(3),
aio_write(3) and lio_listio(3) man-pages for asynchronous I/O.
Taken from FreeBSD with modifications for NetBSD implementation.

wizd, please! :)

Reference only aio(3) in SEE ALSO as it is the central placeholder. Note
timespec(3). Markup: -width Er (not -width Dv), .Dv NULL (not null), etc.

Various improvements: sort errors; use more
markup; fixes for HTML and PostScript output.

Remove pointless AUTHORS sections.

Add aio_cancel(3), aio_error(3), aio_read(3), aio_return(3), aio_suspend(3),
aio_write(3) and lio_listio(3) man-pages for asynchronous I/O.
Taken from FreeBSD with modifications for NetBSD implementation.

wizd, please! :)

Remove workaround for ancient HTML generation code.

remove RESTRICTIONS section, which seems unrelated to our implementation

Reference only aio(3) in SEE ALSO as it is the central placeholder. Note
timespec(3). Markup: -width Er (not -width Dv), .Dv NULL (not null), etc.

Merge two descriptions for same error code.

Fix markup.

branches: 1.3.8;
Convert TNF licenses to new 2 clause variant

branches: 1.2.8;
Various improvements: sort errors; use more
markup; fixes for HTML and PostScript output.

- Add aio_fsync(3) manual page. Reviewed and improved by <wiz>.
- Also, fix the accident duplicate of aio_suspend(3) entry.

Sections 2 and 3 have RETURN VALUES, not DIAGNOSTICS

Remove workaround for ancient HTML generation code.

Reference only aio(3) in SEE ALSO as it is the central placeholder. Note
timespec(3). Markup: -width Er (not -width Dv), .Dv NULL (not null), etc.

Various improvements: sort errors; use more
markup; fixes for HTML and PostScript output.

Remove pointless AUTHORS sections.

Add aio_cancel(3), aio_error(3), aio_read(3), aio_return(3), aio_suspend(3),
aio_write(3) and lio_listio(3) man-pages for asynchronous I/O.
Taken from FreeBSD with modifications for NetBSD implementation.

wizd, please! :)

aio_return returns ssize_t not int

Reference only aio(3) in SEE ALSO as it is the central placeholder. Note
timespec(3). Markup: -width Er (not -width Dv), .Dv NULL (not null), etc.

Various improvements: sort errors; use more
markup; fixes for HTML and PostScript output.

Remove pointless AUTHORS sections.

Add aio_cancel(3), aio_error(3), aio_read(3), aio_return(3), aio_suspend(3),
aio_write(3) and lio_listio(3) man-pages for asynchronous I/O.
Taken from FreeBSD with modifications for NetBSD implementation.

wizd, please! :)

Fix macro (DV -> Dv).

Reference only aio(3) in SEE ALSO as it is the central placeholder. Note
timespec(3). Markup: -width Er (not -width Dv), .Dv NULL (not null), etc.

Various improvements: sort errors; use more
markup; fixes for HTML and PostScript output.

Remove pointless AUTHORS sections.

Add aio_cancel(3), aio_error(3), aio_read(3), aio_return(3), aio_suspend(3),
aio_write(3) and lio_listio(3) man-pages for asynchronous I/O.
Taken from FreeBSD with modifications for NetBSD implementation.

wizd, please! :)

Remove workaround for ancient HTML generation code.

Reference only aio(3) in SEE ALSO as it is the central placeholder. Note
timespec(3). Markup: -width Er (not -width Dv), .Dv NULL (not null), etc.

Various improvements: sort errors; use more
markup; fixes for HTML and PostScript output.

Remove pointless AUTHORS sections.

Add aio_cancel(3), aio_error(3), aio_read(3), aio_return(3), aio_suspend(3),
aio_write(3) and lio_listio(3) man-pages for asynchronous I/O.
Taken from FreeBSD with modifications for NetBSD implementation.

wizd, please! :)

Merge two entries for same error code.

Add sigevent(3) to SEE ALSO

Reference only aio(3) in SEE ALSO as it is the central placeholder. Note
timespec(3). Markup: -width Er (not -width Dv), .Dv NULL (not null), etc.

Various improvements: sort errors; use more
markup; fixes for HTML and PostScript output.

Add aio_cancel(3), aio_error(3), aio_read(3), aio_return(3), aio_suspend(3),
aio_write(3) and lio_listio(3) man-pages for asynchronous I/O.
Taken from FreeBSD with modifications for NetBSD implementation.

wizd, please! :)

Remove duplicate "the". From Henning Petersen in PR 44640.

branches: 1.4.2;
Get rid of SYSCTL_SETUP.

We want the sysctl variables also when mqueue(3) is loaded as a module.

Grammar and spacing fixes.

Remove some leftover .\" comments.

The sysctl variables will be described in sysctl(7).

Add mq(3), a manual page for the POSIX message queues. This tries to act as
a short introduction to the rationale and API, noting also some pros and cons.

rmind@: basically ok. Please feel free to adjust, correct, and extend.

Use Lk macro when dealing with URLs. Another part of PR/29238.

branches: 1.2.6;
Mostly refer to the main page, mq(3), in SEE ALSO.

branches: 1.1.2;
Manuals describing the interface of POSIX message queues.
Taken from The Open Group, with various modifications.
Thanks <wiz> for improvements!

Use Lk macro when dealing with URLs. Another part of PR/29238.

branches: 1.2.6;
Mostly refer to the main page, mq(3), in SEE ALSO.

branches: 1.1.2;
Manuals describing the interface of POSIX message queues.
Taken from The Open Group, with various modifications.
Thanks <wiz> for improvements!

Use Lk macro when dealing with URLs. Another part of PR/29238.

branches: 1.2.6;
Mostly refer to the main page, mq(3), in SEE ALSO.

branches: 1.1.2;
Manuals describing the interface of POSIX message queues.
Taken from The Open Group, with various modifications.
Thanks <wiz> for improvements!

Use Lk macro when dealing with URLs. Another part of PR/29238.

branches: 1.5.6;
Mostly refer to the main page, mq(3), in SEE ALSO.

Fix spaco.

Provide a sane argument for -width.

Use standard section headers, as documented in mdoc.samples(7).

branches: 1.1.2;
Manuals describing the interface of POSIX message queues.
Taken from The Open Group, with various modifications.
Thanks <wiz> for improvements!

Bump date for previous.

Update RETURN VALUE to match reality and POSIX

Use Lk macro when dealing with URLs. Another part of PR/29238.

branches: 1.3.6;
Mostly refer to the main page, mq(3), in SEE ALSO.

Use .In instead of .Aq Pa and variantes for header files.

branches: 1.1.2;
Manuals describing the interface of POSIX message queues.
Taken from The Open Group, with various modifications.
Thanks <wiz> for improvements!

Use Lk macro when dealing with URLs. Another part of PR/29238.

branches: 1.3.6;
Mostly refer to the main page, mq(3), in SEE ALSO.

Use .In instead of .Aq Pa and variantes for header files.

branches: 1.1.2;
Manuals describing the interface of POSIX message queues.
Taken from The Open Group, with various modifications.
Thanks <wiz> for improvements!

Use Lk macro when dealing with URLs. Another part of PR/29238.

branches: 1.2.6;
Mostly refer to the main page, mq(3), in SEE ALSO.

branches: 1.1.2;
Manuals describing the interface of POSIX message queues.
Taken from The Open Group, with various modifications.
Thanks <wiz> for improvements!

Use Lk macro when dealing with URLs. Another part of PR/29238.

branches: 1.3.6;
Fix xref.

Mostly refer to the main page, mq(3), in SEE ALSO.

branches: 1.1.2;
Manuals describing the interface of POSIX message queues.
Taken from The Open Group, with various modifications.
Thanks <wiz> for improvements!

Add LIBRARY section and explicitly mention that these interfaces
require super-user privileges.

branches: 1.14.4;
fix various typos in comments, documentation and messages.

Remove workaround for ancient HTML generation code.

Use standard section headers, as documented in mdoc.samples(7).

Markup: .Ss -> .Sh, .Fa -> .Fn, offset indent, and use lists in two places
for clarity.

Small fix, "processes" mistaken with "processors".

Try to clarify what pset(3) actually does. This needs some more
work.

- Make thread-affinity and processor-set interfaces mutually exlusive.
- pset_assign: when CPU is assigned, migrate out all LWPs from it.

branches: 1.7.2;
Do not recommend to mix affinity(3) with pset(3).

Make HTML-ready. Bump date for previous.

pset(3): add code example, note about thread affinity.
sched(3): mention affinity(3) and cpuset(3).

branches: 1.4.2;
BUGS section no longer applies.

Convert TNF licenses to new 2 clause variant

branches: 1.2.2; 1.2.4; 1.2.6;
Add "This API is expected to be compatible with the APIs found in Solaris and
HP-UX operating systems" into the STANDARDS section, as discussed with <wiz>.

Add pset(3) manual page, and appropriate links.
Thanks <wiz> for review and fixes!

branches: 1.1.2;
Move scheduling functions from librt to libc.
Fixes PR/38657.

librt: Nix expected symbols for now.

Need to find why the symbol __rt_cerror is apparently
machine-dependent.

PR lib/58846: librt exports __rt_cerror on some architectures but not
others

PR lib/58838: shared libraries in base should all have expsym lists

librt: Add expected symbols list.

NOTE: Not sure about some of these internal-looking names like
_librt_sem_open or _pset_bind, intentional?

PR lib/58838: shared libraries in base should all have expsym lists

Fix function name macro.

add missing stuff for the affinity calls (Rocky Hotas)

Remove trailing whitespace.

Flesh out sched_protect

branches: 1.14.2;
Markup improvements.

man page for sched_protect (Charles Cui, GSoC 2016)

Note that SCHED_OTHER must have priority PRI_NONE.

Improvements in secmodel(9). Document secmodel_register(9), _deregister(9)
and _eval(9).

Add secmodel_extensions(9), and indicate the new sysctl(7) to let
ordinary users control the CPU affinity (user_set_cpu_affinity).

branches: 1.10.4;
Sort sections.

Use standard section headers, as documented in mdoc.samples(7).

Add missing word.

Tweak some wording.

Sync the man page with recent addition of few wrappers.

branches: 1.5.4;
Bump date for previous.

pset(3): add code example, note about thread affinity.
sched(3): mention affinity(3) and cpuset(3).

These work with SCHED_4BSD now.

branches: 1.2.2;
Convert TNF licenses to new 2 clause variant

branches: 1.1.2; 1.1.4; 1.1.6;
Add sched(3) manual page, and appropriate links.
Thanks <wiz> for review and fixes!

Move scheduling functions from librt to libc.
Fixes PR/38657.

branches: 1.3.4; 1.3.8;
update for _sched_{get,set}param changes. from rmind@.

sched_setparam: fix the case when incorrect (according to the class)
in-kernel priority is used. Reported by <drochner>.

Minor fixes for scheduling calls to conform the POSIX:
- If pid is equal to zero, use the calling process;
- In case of permission problem, return EPERM instead of EACESS;
- sched_setscheduler() should return previously used policy;
- pthread_* calls should return the error code or zero;

Should fix the namespace problems (and builds of some packages):
- Move cpuset_t defintion from pset.h to sched.h;
- Remove the #include of pset.h in pthread.h;

Implementation of processor-sets, affinity and POSIX real-time extensions.
Add schedctl(8) - a program to control scheduling of processes and threads.

Notes:
- This is supported only by SCHED_M2;
- Migration of LWP mechanism will be revisited;

Proposed on: <tech-kern>. Reviewed by: <ad>.

- KNF return
- be careful with errno, only set it when it is possibly set and not before
a system call.
- factor out a common mask comparison.

Implement support for "pshared" POSIX semaphores.

Fixes lib/53273 (and Firefox's multi-process tab feature).

branches: 1.7.32;
Keep in sync with libpthread: Fix error handling.

Implement sem_timedwait.

branches: 1.5.8;
Replace semid_t with intptr_t. No function change. This is a libc/kernel
private interface and so the name change should not affect any third
party code.

Remove clause 3 and 4 from TNF licenses

branches: 1.3.30;
Check for __weak_alias macro before using it.

use __RCSID()

Add librt, which provides POSIX 1003.1b Real-time extensions not
present in libc. Currently includes 1003.1b semaphores.

Various improvements: sort errors; use more
markup; fixes for HTML and PostScript output.

Add librt, which provides POSIX 1003.1b Real-time extensions not
present in libc. Currently includes 1003.1b semaphores.

Add missing comma.

Implement sem_timedwait.

branches: 1.2.42;
Add restrict qualifiers to function arguments (already in <semaphore.h>).

branches: 1.1.6;
Add librt, which provides POSIX 1003.1b Real-time extensions not
present in libc. Currently includes 1003.1b semaphores.

Mention that ENOSPC can be returned if we exhausted the max number of
semaphores.

branches: 1.4.32;
One more reference to unimplemented shared semaphores.

Shared semaphores have been supported since the initial version, so drop
obsolete restriction.

Implement sem_timedwait.

branches: 1.1.54;
Add librt, which provides POSIX 1003.1b Real-time extensions not
present in libc. Currently includes 1003.1b semaphores.

file system police; remove trailing whitespace; merge two error sections
for same error.

It is not a bug that we are only allowing /name. Update for newly allowed
length.

branches: 1.6.30;
Merge error descriptions for same error code.

Implement sem_timedwait.

branches: 1.4.42;
This function is in librt, not libc.

branches: 1.3.2;
Add "not" to a sentence so that it makes more sense.

Bring in sem_open (& sem_close & sem_unlink) man page from FreeBSD.
These functions are actually implemented, but the old man page said that
they simply returned with errors--it was apparently out of date at the
time of import.

branches: 1.1.4;
Add librt, which provides POSIX 1003.1b Real-time extensions not
present in libc. Currently includes 1003.1b semaphores.

Whitespace nits.

Implement sem_timedwait.

branches: 1.1.54;
Add librt, which provides POSIX 1003.1b Real-time extensions not
present in libc. Currently includes 1003.1b semaphores.

Add sem_timedwait to NAME and fix SYNOPSIS. Add serial comma.

Implement sem_timedwait.

branches: 1.1.54;
Add librt, which provides POSIX 1003.1b Real-time extensions not
present in libc. Currently includes 1003.1b semaphores.

Implement sem_timedwait.

branches: 1.2.8;
bump shared libraries.

Add librt, which provides POSIX 1003.1b Real-time extensions not
present in libc. Currently includes 1003.1b semaphores.

Simplify previous by just doing an open() on the directory and then using
the fstat* family to test for all relevant details.
Clean up buffer sizes and clarify a length check. Based on input from dholland.

Allow /var/shm to be a symlink to a properly set up directory.

branches: 1.1.4; 1.1.6; 1.1.8;
Add shm_open(3) and shm_unlink(3) to support POSIX shared memory objects.
They are implemented using tmpfs (mounted at /var/shm).

Discussed on tech-{kern,userlevel} (quite a while ago).

branches: 1.2.4; 1.2.8;
Sort errors.

Add a man page for shm_open(3) and shm_unlink(3). Obtained from FreeBSD,
with various modifications.

Use PRINTOBJDIR to get the object directory of libc and use that with -I.

Add -D_REENTRANT

For cerror, allow -I../libc to allow inclusion of any assym.h, if up.

Let libposix and librt have their own version of __cerror (__posix_cerror and
__rt_cerror). This enables each library (including libc) the oppurtunity to
make its __cerror hidden and avoid being called via the PLT. No user visible
differences to no need to bump the minor number.

Implementation of processor-sets, affinity and POSIX real-time extensions.
Add schedctl(8) - a program to control scheduling of processes and threads.

Notes:
- This is supported only by SCHED_M2;
- Migration of LWP mechanism will be revisited;

Proposed on: <tech-kern>. Reviewed by: <ad>.

Add cancellation stubs in libpthread for POSIX messages queues and
asynchronous I/O.

OK by <ad>.

Implementation of POSIX message queues.

Reviewed by: <ad>, <tech-kern>

branches: 1.2.4;
We should clean the ${ASM} files, not a ${PSEUDO}, which is really "pseudo" ;)
Pointed out by <veego>.

Import of POSIX Asynchronous I/O.
Seems to be quite stable. Some work still left to do.

Please note, that syscalls are not yet MP-safe, because
of the file and vnode subsystems.

Reviewed by: <tech-kern>, <ad>