IFC @ r242684

Sync from head

Merge head r233826 through r240095.

Implement syscall clock_getcpuclockid2, so we can get a clock id
for process, thread or others we want to support.
Use the syscall to implement POSIX API clock_getcpuclock and
pthread_getcpuclockid.

Implement syscall clock_getcpuclockid2, so we can get a clock id
for process, thread or others we want to support.
Use the syscall to implement POSIX API clock_getcpuclock and
pthread_getcpuclockid.

PR: 168417

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Merge head r236710 through r238467.

IFC @238412.

IFC @ r238370

Optimize the handling of SC_NPROCESSORS_CONF, by using auxv AT_NCPU
value if present.

MFC after: 1 week

Integrate from Head into ZFSD feature branch as of revision r224141.

IFC @ r222830

MFC

Use size of int to fetch sysctl kern.sched.cpusetsize because it had
switched from long to int type in kernel.

Fixed by: pluknet

Sync: merge r214353 through r214648 from ^/head.

Add sysctl kern.sched.cpusetsize to export the size of kernel cpuset,
also add sysconf() key _SC_CPUSET_SIZE to get sysctl value.

Submitted by: gcooper

IFH@204581

Split the contributed code from libc/stdtime from lib/libc/stdtime
to contrib/tzcode/stdtime.

stdio is currently limited to file descriptors not greater than
{SHRT_MAX}, so {STREAM_MAX} should be no greater than that. (This
does not exactly meet the letter of POSIX but comes reasonably close

stdio is currently limited to file descriptors not greater than
{SHRT_MAX}, so {STREAM_MAX} should be no greater than that. (This
does not exactly meet the letter of POSIX but comes reasonably close
to it in spirit.)

MFC after: 14 days

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Cleanup sysconf(3) a bit. sysconf(3) assumes in some places it operates
on int, but in fact it should operate on long.
- Introduce 'lvalue' variable, which is long.
- Fix _SC_XOPEN_SHM for 64bit arch

Cleanup sysconf(3) a bit. sysconf(3) assumes in some places it operates
on int, but in fact it should operate on long.
- Introduce 'lvalue' variable, which is long.
- Fix _SC_XOPEN_SHM for 64bit archs.
- Fix _SC_PHYS_PAGES for 64bit archs.
Reported by: simokawa
- Use lvalue for pathconf(3), as it returns long.
- Cast value explicitly to long on return.

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Per Regents of the University of Calfornia letter, remove advertising
clause.

# If I've done so improperly on a file, please let me know.

band-aide until _SC_PHYS_PAGES actually is defined

Add support for _SC_PHYS_PAGES, which is not standard, but can be found in
Solaris and Linux.

goto break; != break;

I've no idea if this is the right behavior for the library, but this
at least fixes the build, and matches what seems to be alfred's intent
in the commit message for 1.19.

Rework the sysconf(3) interaction with aio:

sysconf.c:
Use 'break' rather than 'goto yesno' in sysconf.c so that we report a '0'
return value from the kernel sysctl.

vfs_aio.c:
Make aio reset

Rework the sysconf(3) interaction with aio:

sysconf.c:
Use 'break' rather than 'goto yesno' in sysconf.c so that we report a '0'
return value from the kernel sysctl.

vfs_aio.c:
Make aio reset its configuration parameters to -1 after unloading
instead of 0.

posix4_mib.c:
Initialize the aio configuration parameters to -1
to indicate that it is not loaded.
Add a facility (p31b_iscfg()) to determine if a posix4 facility has been
initialized to avoid having to re-order the SYSINITs.
Use p31b_iscfg() to determine if aio has had a chance to run yet which
is likely if it is compiled into the kernel and avoid spamming its
values.
Introduce a macro P31B_VALID() instead of doing the same comparison over
and over.

posix4.h:
Prototype p31b_iscfg().

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Provide more correct default values for sysconf(3) reporting of the AIO
subsystems capabilities:

_SC_AIO_LISTIO_MAX returns the default of _POSIX_AIO_LISTIO_MAX
_SC_AIO_MAX returns the default _POSI

Provide more correct default values for sysconf(3) reporting of the AIO
subsystems capabilities:

_SC_AIO_LISTIO_MAX returns the default of _POSIX_AIO_LISTIO_MAX
_SC_AIO_MAX returns the default _POSIX_AIO_MAX
_SC_AIO_PRIO_DELTA_MAX returns the default of 0

Without these adjustments the values returned are -1 even when the
aio side of the kernel returns '0' for them which is incorrect.

Noticed by: Craig Rodrigues <rodrigc@attbi.com>

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Update limits and configuration parameters for 1003.1/TC1/D6.
Implement new sysconf keys. Change the implenentation of
_SC_ASYNCHRONOUS_IO in preparation for the next set of changes.

Move some limi

Update limits and configuration parameters for 1003.1/TC1/D6.
Implement new sysconf keys. Change the implenentation of
_SC_ASYNCHRONOUS_IO in preparation for the next set of changes.

Move some limits which had been in <sys/syslimits.h> to <limits.h> where
they belong. They had only ever been in syslimits.h to provide for the
kernel implementation of the CTL_USER MIB branch, which went away with
newsysctl years ago. (There is a #error in <sys/syslimits.h> which I
will downgrade in the next commit.)

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