libc: Document getprotoent_r(), getprotobynumber_r(), and getprotobyname_r().

Partially-taken-from: OpenBSD

libc: Document offtime(), timelocal(), and timeoff().

Taken-from: NetBSD

world - update manual page for mmap()

* Update the manual page for mmap().

pthreads and kernel - change MAP_STACK operation

* Only allow new mmap()'s to intrude on ungrown MAP_STACK areas when
MAP_TRYFIXED is specified. This was not working as intended before.
Adjust

pthreads and kernel - change MAP_STACK operation

* Only allow new mmap()'s to intrude on ungrown MAP_STACK areas when
MAP_TRYFIXED is specified. This was not working as intended before.
Adjust the manual page to be more clear.

* Make kern.maxssiz (the maximum user stack size) visible via sysctl.

* Add kern.maxthrssiz, indicating the approximate space for placement
of pthread stacks. This defaults to 128GB.

* The old libthread_xu stack code did use TRYFIXED and will work
with the kernel changes, but change how it works to not assume
that the user stack should suddenly be limited to the pthread stack
size (~2MB).

Just use a normal mmap() now without TRYFIXED and a hint based on
kern.maxthrssiz (defaults to 512GB), calculating a starting address
hint that is (_usrstack - maxssiz - maxthrssiz).

* Adjust procfs to report MAP_STACK segments as 'STK'.

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libc: Move out locking from vsyslog() core.

For consistency with openlog() and closelog().

While there, use SOCK_CLOEXEC directly and do not attempt to closelog()
several times for badly written pr

libc: Move out locking from vsyslog() core.

For consistency with openlog() and closelog().

While there, use SOCK_CLOEXEC directly and do not attempt to closelog()
several times for badly written programs (LogFile is handled internally).

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libc: Fix few typos in vsyslog().

While there, move variable declarations to top and remove braces.

libc: Implement properly pthread_equal() stub.

Functional stub is needed to avoid forcing thread library on librecrypto.

libc/rpc: Fix -Wtype-limits.

Instead of triggering a warning by checking if the passed type is signed
split the INT_STRLEN_MACRO() into two, one for unsigned and the other for
signed types. The latt

libc/rpc: Fix -Wtype-limits.

Instead of triggering a warning by checking if the passed type is signed
split the INT_STRLEN_MACRO() into two, one for unsigned and the other for
signed types. The latter isn't used and was added just for completeness.

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libc: Fix some more -Wmissing-prototypes warnings.

libc: Adjust HISTORY sections in a few recently added manual pages.

timingsafe_bcmp.3: Add missing .Lb.

libc/rpc: Use sig_t (fixes -Wstrict-prototypes).

libc/rpc: Fix some -Wstrict-prototypes warnings.

libc/db: Remove unnecessary casts too.

libc/db: Fix -Wcast-function-type.

libc/string: Add timing_safe functions from OpenBSD.

Good and small functions for crypto retlated things.
Add manpage and set __pure attributes.

Taken-from: OpenBSD

libc/stdlib: Add recallocarray() function.

It is useful function for security related features, like resizing
memory objects containing sensitive data to avoid information leaking.
Update manpage.

libc/stdlib: Add recallocarray() function.

It is useful function for security related features, like resizing
memory objects containing sensitive data to avoid information leaking.
Update manpage.

Taken-from: OpenBSD

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libc/stdlib: Add freezero() function.

It is useful function for security related features. Internally uses
explicit_bzero(3) before freeing the pointers. It could be implemented
in nmalloc.c for ext

libc/stdlib: Add freezero() function.

It is useful function for security related features. Internally uses
explicit_bzero(3) before freeing the pointers. It could be implemented
in nmalloc.c for extra benefits.
Update the manpage.

Taken-from: OpenBSD

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libc/string: Add explicit_bzero() from OpenBSD.

It is useful function for security related features. It allows to
further manipulate discarded memory region through weak hook.
Update the bzero.3 man

libc/string: Add explicit_bzero() from OpenBSD.

It is useful function for security related features. It allows to
further manipulate discarded memory region through weak hook.
Update the bzero.3 manpage.

Taken-from: OpenBSD

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libc/rpc: Fix some -Wmissing-prototypes.

libc/locale: Fix -Wmissing-field-initializers.

libc: Remove an age old unused function.

It was labeled as "historic" even in 1994 and probably much earlier
before FreeBSD existed. Nothing in dports uses it and it was also
not added to Symbol.map

libc: Remove an age old unused function.

It was labeled as "historic" even in 1994 and probably much earlier
before FreeBSD existed. Nothing in dports uses it and it was also
not added to Symbol.map so nothing could exist that uses it and is
dynamically linked against our libc.

In-discussion-with: zrj

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libc: Revert last commit partially. Make function public instead.

libc/net: Align rthdr.c with <netinet6/in6.h> (#if 0 a function).

Fixes a -Wmissing-prototype.

While here, fix typos in comments.

libc: Fix some more -Wmissing-prototype.