mmap.2: Improve markup.

docs - Update shm_open(3) manual page

* Update to detail recent work.

Submitted-by: Lassi Kortela

Add some missing whitespace/linefeeds in a few manpages.

Nuke timed(8) (and timedc(8)). It is no longer used for time setting.

Adjust date(1) too for the removal (based on what FreeBSD did).

libkvm - Increase static buffer for devname()

* For now increase the internal static buffer for devname
to MAXPATHLEN (aka 1024). This may eventually be replaced
with SPECNAMELEN.

* This chang

libkvm - Increase static buffer for devname()

* For now increase the internal static buffer for devname
to MAXPATHLEN (aka 1024). This may eventually be replaced
with SPECNAMELEN.

* This change is not exposed externally and it, or later changes,
should not break anything.

Requested-by: aly

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<sys/signal.h>: Adjust the type of stack_t's ss_sp from char * to void *.

libc: Add missing #include "un-namespace.h" in a few files.

libc/pwcache: Remove some old RCS related stuff.

libc: Use quotation marks around {un-,}namespace.h (private header).

world - Makme shm_open() more compatible with expectations

* Create a tmpfs mount in /var/run/shm and also create /var/run/shm/tmp
under it, both modes 1777, to support shm_open(). No longer base

world - Makme shm_open() more compatible with expectations

* Create a tmpfs mount in /var/run/shm and also create /var/run/shm/tmp
under it, both modes 1777, to support shm_open(). No longer base
shm_open() at the root directory.

* shm_open() and shm_unlink() now access files relative to /var/run/shm.

This fixes numerous ports and removes the need for numerous
port patches.

* Rejigger libraries using namespace.h/un-namespace.h to add _unlink() and
_unlinkat() into the mix.

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Clean up a few math related manualpages.

* In frexp.3, change the library to libc, because it is part of libc,
not libm (anymore).

* In fpclassify.3 and signbit.3, remove the LIBRARY section, bec

Clean up a few math related manualpages.

* In frexp.3, change the library to libc, because it is part of libc,
not libm (anymore).

* In fpclassify.3 and signbit.3, remove the LIBRARY section, because
all these are macros from <math.h>.

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rtld-elf - Notify thread state to optimize relocations (2)

* Remove write() prototype in dlfcn.c that was only used for
debugging.

Reminded-by: swildner

pathconf.2/sysconf.3: Add some related references to SEE ALSO.

rtld-elf - Notify thread state to optimize relocations

* Add shims to allow libthread_xu to notify rtld when threading
is being used.

* Requires weak symbols in libc which are overriden by rtld-e

rtld-elf - Notify thread state to optimize relocations

* Add shims to allow libthread_xu to notify rtld when threading
is being used.

* Requires weak symbols in libc which are overriden by rtld-elf.

* Implement the feature in rtld-elf and use it to avoid making calls
to lwp_gettid(). When threaded, use tls_get_tcb() (which does not
require a system call) instead of lwp_gettid(). When not threaded,
just use a constant.

NOTE: We cannot use tls_get_tcb() unconditionally because the tcb
is not setup during early relocations. So do this whack-a-mole
to make it work.

* This leaves just the sigprocmask wrappers around rtld-elf (which
are needed to prevent stacked relocations from signal handlers).

Poked-by: mjg

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dup3.3: Adjust HISTORY section.

libc: Add dup3() from FreeBSD.

As proposed in http://austingroupbugs.net/view.php?id=411

It seems to help with various ports.

Pointed-out-by: zrj

libc/net: Document more functions.

gethostbyaddr_r()
gethostbyname_r()
gethostbyname2_r()
gethostent_r()
getnetbyaddr_r()
getnetbyname_r()
getnetent_r()

libc/net: Adjust h_errorp arg name to herrno_p like everywhere else.

getservent.3: Fix function name.

libc: Change a few DIAGNOSTICS sections into RETURN VALUES and/or ERRORS.

DIAGNOSTICS is for stderr type messages only.

libc: Add forgotten MLINK.

libc: Document yp_maplist().

While here, correct a wrong type.

Taken-from: OpenBSD

libc/locale: Document mbrtoc{16,32}_l() and c{16,32}rtomb_l().

libc: Add posix_fadvise(), for now empty except for some error checking.

This should help some dports.

From POSIX' point of view this is sufficient because it is not
required that the implementatio

libc: Add posix_fadvise(), for now empty except for some error checking.

This should help some dports.

From POSIX' point of view this is sufficient because it is not
required that the implementation does anything with the passed
information.

The manual page was taken from FreeBSD.

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libc: Document getservent_r(), getservbyport_r(), and getservbyname_r().

Partially-taken-from: OpenBSD