More #include cleanup per POSIX:
- <sys/types.h>: don't pull in <sys/select.h>
- <sys/select.h>: don't pull in <sys/time.h>, but rather declare timeval
and timespec locally
- <sys/time.h>: *do*

More #include cleanup per POSIX:
- <sys/types.h>: don't pull in <sys/select.h>
- <sys/select.h>: don't pull in <sys/time.h>, but rather declare timeval
and timespec locally
- <sys/time.h>: *do* always pull in <sys/select.h>
- <sys/socket.h>: declare timeval if __BSD_VISIBLE for struct splice

Ports testing and fixed by ajacoutot@
ok deraadt@ millert@

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Make __fd_isset() take a const fd_set * param, to avoid upsetting c++

ok zhuk@ deraadt@

The FD_SET/FD_CLR/FD_ISSET macros have always multi-evaluated the fd argument.
Wrap them around a static inline function which avoids the problem.
ok kettenis mikeb

Remove string.h dependency from sys/select.h; from FreeBSD, tweaked
by deraadt@. Sync man page.

ok guenther@, deraadt@

__fd_mask should be unsigned, and let's shift an unsigned bit. Why
has this never mattered before??
ok guenther millert

kernel has memcpy/memset now

Extend P_SIGSUSPEND handling in userret() to properly restore the
sigmask even if there are no pending signals under the temporary
sigmask.

Refactor existing select() and poll() system calls to intr

Extend P_SIGSUSPEND handling in userret() to properly restore the
sigmask even if there are no pending signals under the temporary
sigmask.

Refactor existing select() and poll() system calls to introduce the
pselect() and ppoll() system calls.

Add rthread wrappers for pselect() and ppoll(). While there, update
cancellation point comments to reflect recent fdatasync() addition.

Minor bumps for libc and librthread due to new symbols.

ok guenther, millert, deraadt, jmc

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Remove excessive sys/cdefs.h inclusion
ok guenther millert kettenis

x << long generates a lint warning, so silence it by casting __NFDBITS
to unsigned; this is a conseqeunce of changing size_t to u_long.
ok deraadt@ millert@ cloder@

First step in include files overhaul. Use __FOO_VISIBLE (as defined
in sys/cdefs.h) instead of _FOO_SOURCE. Also fix several namespace
pollution issues, including the byte order defines. OK deraad

First step in include files overhaul. Use __FOO_VISIBLE (as defined
in sys/cdefs.h) instead of _FOO_SOURCE. Also fix several namespace
pollution issues, including the byte order defines. OK deraadt@

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Move contents of sys/select.h to sys/selinfo.h in preparation for a
userland-visible sys/select.h. Consistent with what Net and Free do.
OK deraadt@, tested with full ports build by naddy@.

Remove the advertising clause in the UCB license which Berkeley
rescinded 22 July 1999. Proofed by myself and Theo.

First round of __P removal in sys

support kernel event queues, from FreeBSD by Jonathan Lemon,
okay art@, millert@

select subsystem si_pid becomes si_selpid, to not conflict against user/kernel siginfo si_pid #define

From NetBSD: 960217 merge

initial import of NetBSD tree