sync with FreeBSD (rwlock, gc thread, man pages)

add (broken) mips md stuff
fix some const warnings
add sigaltstack() stub
another hash at getting shlib auto-init to work (mips/elf and i386/a.out)

36 files changed, 910 insertions, 62 deletions

diff --git a/lib/libc_r/man/Makefile.inc b/lib/libc_r/man/Makefile.inc
index 2cae3f76800..8fbdb1c9ccc 100644
--- a/lib/libc_r/man/Makefile.inc
+++ b/lib/libc_r/man/Makefile.inc
@@ -1,5 +1,5 @@
-# $Id: Makefile.inc,v 1.1 1998/08/27 09:00:33 d Exp $
-# $OpenBSD: Makefile.inc,v 1.1 1998/08/27 09:00:33 d Exp $
+# $Id: Makefile.inc,v 1.2 1998/11/09 03:13:14 d Exp $
+# $OpenBSD: Makefile.inc,v 1.2 1998/11/09 03:13:14 d Exp $
 
 # POSIX thread man files
 
@@ -27,6 +27,15 @@ MAN+=	pthread_cleanup_pop.3 \
 	pthread_mutex_trylock.3 \
 	pthread_mutex_unlock.3 \
 	pthread_once.3 \
+	pthread_rwlock_destroy.3 \
+	pthread_rwlock_init.3 \
+	pthread_rwlock_rdlock.3 \
+	pthread_rwlock_unlock.3 \
+	pthread_rwlock_wrlock.3 \
+	pthread_rwlockattr_destroy.3 \
+	pthread_rwlockattr_getpshared.3 \
+	pthread_rwlockattr_init.3 \
+	pthread_rwlockattr_setpshared.3 \
 	pthread_self.3 \
 	pthread_setspecific.3
 
diff --git a/lib/libc_r/man/pread.3 b/lib/libc_r/man/pread.3
new file mode 100644
index 00000000000..c21f88ae4c2
--- /dev/null
+++ b/lib/libc_r/man/pread.3
@@ -0,0 +1,36 @@
+.\" $OpenBSD: pread.3,v 1.1 1998/11/09 03:13:14 d Exp $
+.Dd September 7, 1998
+.Os Ox
+.Dt PREAD 3
+.Sh NAME
+.Nm pread
+.Nd atomic seek and read
+.Sh SYNOPSIS
+.Fd #include <pthread.h>
+.Ft ssize_t
+.Fn pread "int filedes" "void *buf" "size_t nbytes" "off_t offset"
+.Sh DESCRIPTION
+The
+.Fn pread
+function reads
+.Fa nbyte
+bytes from offset
+.Fa offset
+in the file opened on file descriptor
+.Fa filedes.
+.Pp
+This function is provided for use in a threaded, parallel I/O
+environment, where race conditions may exist between two threads 
+non-atomically seeking and reading from the same file descriptor.
+.Sh RETURN VALUES
+The
+.Fn pread
+function returns values identical to
+.Xr read 3 .
+.Sh SEE ALSO
+.Xr pthreads 3 ,
+.Xr read 3 ,
+.Xr pwrite 3
+.Sh STANDARDS
+.Fn pread
+conforms to TOG SUSv2 .
diff --git a/lib/libc_r/man/pthread_cleanup_pop.3 b/lib/libc_r/man/pthread_cleanup_pop.3
index a244f9441e1..eefe4f335ae 100644
--- a/lib/libc_r/man/pthread_cleanup_pop.3
+++ b/lib/libc_r/man/pthread_cleanup_pop.3
@@ -51,7 +51,6 @@ does not return any value.
 .Sh ERRORS
 None
 .Sh SEE ALSO
-.Xr pthreads 3 ,
 .Xr pthread_cleanup_push 3 ,
 .Xr pthread_exit 3
 .Sh STANDARDS
diff --git a/lib/libc_r/man/pthread_cleanup_push.3 b/lib/libc_r/man/pthread_cleanup_push.3
index 4a4b876ee4f..9bb3f400b64 100644
--- a/lib/libc_r/man/pthread_cleanup_push.3
+++ b/lib/libc_r/man/pthread_cleanup_push.3
@@ -54,7 +54,6 @@ does not return any value.
 .Sh ERRORS
 None
 .Sh SEE ALSO
-.Xr pthreads 3 ,
 .Xr pthread_cleanup_pop 3 ,
 .Xr pthread_exit 3
 .Sh STANDARDS
diff --git a/lib/libc_r/man/pthread_cond_broadcast.3 b/lib/libc_r/man/pthread_cond_broadcast.3
index 25f00950db0..3b39287046d 100644
--- a/lib/libc_r/man/pthread_cond_broadcast.3
+++ b/lib/libc_r/man/pthread_cond_broadcast.3
@@ -56,12 +56,11 @@ is invalid.
 .El
 .Pp
 .Sh SEE ALSO
-.Xr pthreads 3 ,
-.Xr pthread_cond_init 3 ,
 .Xr pthread_cond_destroy 3 ,
-.Xr pthread_cond_wait 3 ,
+.Xr pthread_cond_init 3 ,
+.Xr pthread_cond_signal 3 ,
 .Xr pthread_cond_timedwait 3 ,
-.Xr pthread_cond_signal 3
+.Xr pthread_cond_wait 3
 .Sh STANDARDS
 .Fn pthread_cond_broadcast
 conforms to ISO/IEC 9945-1 ANSI/IEEE
diff --git a/lib/libc_r/man/pthread_cond_destroy.3 b/lib/libc_r/man/pthread_cond_destroy.3
index 94f2b4210f5..22921b49a5e 100644
--- a/lib/libc_r/man/pthread_cond_destroy.3
+++ b/lib/libc_r/man/pthread_cond_destroy.3
@@ -60,12 +60,11 @@ is locked by another thread.
 .El
 .Pp
 .Sh SEE ALSO
-.Xr pthreads 3 ,
+.Xr pthread_cond_broadcast 3 ,
 .Xr pthread_cond_init 3 ,
-.Xr pthread_cond_wait 3 ,
-.Xr pthread_cond_timedwait 3 ,
 .Xr pthread_cond_signal 3 ,
-.Xr pthread_cond_broadcast 3
+.Xr pthread_cond_timedwait 3 ,
+.Xr pthread_cond_wait 3
 .Sh STANDARDS
 .Fn pthread_cond_destroy
 conforms to ISO/IEC 9945-1 ANSI/IEEE
diff --git a/lib/libc_r/man/pthread_cond_init.3 b/lib/libc_r/man/pthread_cond_init.3
index f8c16f49b21..00f669d51be 100644
--- a/lib/libc_r/man/pthread_cond_init.3
+++ b/lib/libc_r/man/pthread_cond_init.3
@@ -65,12 +65,11 @@ The temporarily lacks the resources to create another condition variable.
 .El
 .Pp
 .Sh SEE ALSO
-.Xr pthreads 3 ,
+.Xr pthread_cond_broadcast 3 ,
 .Xr pthread_cond_destroy 3 ,
-.Xr pthread_cond_wait 3 ,
-.Xr pthread_cond_timedwait 3 ,
 .Xr pthread_cond_signal 3 ,
-.Xr pthread_cond_broadcast 3
+.Xr pthread_cond_timedwait 3 ,
+.Xr pthread_cond_wait 3
 .Sh STANDARDS
 .Fn pthread_cond_init
 conforms to ISO/IEC 9945-1 ANSI/IEEE
diff --git a/lib/libc_r/man/pthread_cond_signal.3 b/lib/libc_r/man/pthread_cond_signal.3
index ebfd6561f4c..679e46fb2ed 100644
--- a/lib/libc_r/man/pthread_cond_signal.3
+++ b/lib/libc_r/man/pthread_cond_signal.3
@@ -56,12 +56,11 @@ is invalid.
 .El
 .Pp
 .Sh SEE ALSO
-.Xr pthreads 3 ,
-.Xr pthread_cond_init 3 ,
+.Xr pthread_cond_broadcast 3 ,
 .Xr pthread_cond_destroy 3 ,
-.Xr pthread_cond_wait 3 ,
+.Xr pthread_cond_init 3 ,
 .Xr pthread_cond_timedwait 3 ,
-.Xr pthread_cond_broadcast 3
+.Xr pthread_cond_wait 3
 .Sh STANDARDS
 .Fn pthread_cond_signal
 conforms to ISO/IEC 9945-1 ANSI/IEEE
diff --git a/lib/libc_r/man/pthread_cond_timedwait.3 b/lib/libc_r/man/pthread_cond_timedwait.3
index 111a3fb117a..ab0184a7c58 100644
--- a/lib/libc_r/man/pthread_cond_timedwait.3
+++ b/lib/libc_r/man/pthread_cond_timedwait.3
@@ -73,12 +73,11 @@ The system time has reached or exceeded the time specified in
 .El
 .Pp
 .Sh SEE ALSO
-.Xr pthreads 3 ,
-.Xr pthread_cond_init 3 ,
+.Xr pthread_cond_broadcast 3 ,
 .Xr pthread_cond_destroy 3 ,
-.Xr pthread_cond_wait 3 ,
+.Xr pthread_cond_init 3 ,
 .Xr pthread_cond_signal 3 ,
-.Xr pthread_cond_broadcast 3
+.Xr pthread_cond_wait 3
 .Sh STANDARDS
 .Fn pthread_cond_timedwait
 conforms to ISO/IEC 9945-1 ANSI/IEEE
diff --git a/lib/libc_r/man/pthread_cond_wait.3 b/lib/libc_r/man/pthread_cond_wait.3
index 69d9257cadf..7f70b591f03 100644
--- a/lib/libc_r/man/pthread_cond_wait.3
+++ b/lib/libc_r/man/pthread_cond_wait.3
@@ -67,12 +67,11 @@ is invalid.
 .El
 .Pp
 .Sh SEE ALSO
-.Xr pthreads 3 ,
-.Xr pthread_cond_init 3 ,
+.Xr pthread_cond_broadcast 3 ,
 .Xr pthread_cond_destroy 3 ,
-.Xr pthread_cond_timedwait 3 ,
+.Xr pthread_cond_init 3 ,
 .Xr pthread_cond_signal 3 ,
-.Xr pthread_cond_broadcast 3
+.Xr pthread_cond_timedwait 3
 .Sh STANDARDS
 .Fn pthread_cond_wait
 conforms to ISO/IEC 9945-1 ANSI/IEEE
diff --git a/lib/libc_r/man/pthread_create.3 b/lib/libc_r/man/pthread_create.3
index 7f94ffa0183..6966b56398a 100644
--- a/lib/libc_r/man/pthread_create.3
+++ b/lib/libc_r/man/pthread_create.3
@@ -100,11 +100,10 @@ is invalid.
 .El
 .Pp
 .Sh SEE ALSO
-.Xr pthreads 3 ,
 .Xr fork 2 ,
-.Xr pthread_exit 3 ,
-.Xr pthread_cleanup_push 3 ,
 .Xr pthread_cleanup_pop 3 ,
+.Xr pthread_cleanup_push 3 ,
+.Xr pthread_exit 3 ,
 .Xr pthread_join 3
 .Sh STANDARDS
 .Fn pthread_create
diff --git a/lib/libc_r/man/pthread_detach.3 b/lib/libc_r/man/pthread_detach.3
index a917d632e24..a7f0490ae0d 100644
--- a/lib/libc_r/man/pthread_detach.3
+++ b/lib/libc_r/man/pthread_detach.3
@@ -73,7 +73,6 @@ thread ID,
 .El
 .Pp
 .Sh SEE ALSO
-.Xr pthreads 3 ,
 .Xr pthread_join 3
 .Sh STANDARDS
 .Fn pthread_detach
diff --git a/lib/libc_r/man/pthread_equal.3 b/lib/libc_r/man/pthread_equal.3
index 976d2881602..74a588279b9 100644
--- a/lib/libc_r/man/pthread_equal.3
+++ b/lib/libc_r/man/pthread_equal.3
@@ -57,7 +57,6 @@ correspond to the same thread, otherwise it will return zero.
 None.
 .Pp
 .Sh SEE ALSO
-.Xr pthreads 3 ,
 .Xr pthread_create 3 ,
 .Xr pthread_exit 3
 .Sh STANDARDS
diff --git a/lib/libc_r/man/pthread_exit.3 b/lib/libc_r/man/pthread_exit.3
index b2fa8f2119b..0e0f1765ee8 100644
--- a/lib/libc_r/man/pthread_exit.3
+++ b/lib/libc_r/man/pthread_exit.3
@@ -88,7 +88,6 @@ function cannot return to its caller.
 None.
 .Pp
 .Sh SEE ALSO
-.Xr pthreads 3 ,
 .Xr _exit 2 ,
 .Xr exit 2 ,
 .Xr pthread_create 3 ,
diff --git a/lib/libc_r/man/pthread_getspecific.3 b/lib/libc_r/man/pthread_getspecific.3
index 73490ae1d5b..acffbfaac2e 100644
--- a/lib/libc_r/man/pthread_getspecific.3
+++ b/lib/libc_r/man/pthread_getspecific.3
@@ -28,8 +28,8 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.\"	$Id: pthread_getspecific.3,v 1.1 1998/08/27 09:00:42 d Exp $
-.\"	$OpenBSD: pthread_getspecific.3,v 1.1 1998/08/27 09:00:42 d Exp $
+.\"	$FreeBSD: pthread_getspecific.3,v 1.5 1998/08/03 00:58:36 alex Exp $
+.\"	$OpenBSD: pthread_getspecific.3,v 1.2 1998/11/09 03:13:15 d Exp $
 .\"
 .Dd April 4, 1996
 .Dt PTHREAD_GETSPECIFIC 3
@@ -73,7 +73,6 @@ then the value NULL is returned.
 .Sh ERRORS
 None.
 .Sh SEE ALSO
-.Xr pthreads 3 ,
 .Xr pthread_key_create 3 ,
 .Xr pthread_key_delete 3 ,
 .Xr pthread_setspecific 3
diff --git a/lib/libc_r/man/pthread_join.3 b/lib/libc_r/man/pthread_join.3
index a89878c33f2..d7a28a13053 100644
--- a/lib/libc_r/man/pthread_join.3
+++ b/lib/libc_r/man/pthread_join.3
@@ -91,7 +91,6 @@ specifies the calling thread.
 .El
 .Pp
 .Sh SEE ALSO
-.Xr pthreads 3 ,
 .Xr wait 2 ,
 .Xr pthread_create 3
 .Sh STANDARDS
diff --git a/lib/libc_r/man/pthread_key_create.3 b/lib/libc_r/man/pthread_key_create.3
index 2d29d10128b..c7c15fd0cef 100644
--- a/lib/libc_r/man/pthread_key_create.3
+++ b/lib/libc_r/man/pthread_key_create.3
@@ -88,7 +88,6 @@ Insufficient memory exists to create the key.
 .El
 .Pp
 .Sh SEE ALSO
-.Xr pthreads 3 ,
 .Xr pthread_getspecific 3 ,
 .Xr pthread_key_delete 3 ,
 .Xr pthread_setspecific 3
diff --git a/lib/libc_r/man/pthread_key_delete.3 b/lib/libc_r/man/pthread_key_delete.3
index 6ef3aef9b0b..cf1ad12ae99 100644
--- a/lib/libc_r/man/pthread_key_delete.3
+++ b/lib/libc_r/man/pthread_key_delete.3
@@ -82,7 +82,6 @@ value is invalid.
 .El
 .Pp
 .Sh SEE ALSO
-.Xr pthreads 3 ,
 .Xr pthread_getspecific 3 ,
 .Xr pthread_key_create 3 ,
 .Xr pthread_setspecific 3
diff --git a/lib/libc_r/man/pthread_mutex_destroy.3 b/lib/libc_r/man/pthread_mutex_destroy.3
index aa9837c4732..e9fb9c11d04 100644
--- a/lib/libc_r/man/pthread_mutex_destroy.3
+++ b/lib/libc_r/man/pthread_mutex_destroy.3
@@ -59,11 +59,10 @@ is locked by another thread.
 .El
 .Pp
 .Sh SEE ALSO
-.Xr pthreads 3 ,
 .Xr pthread_mutex_init 3 ,
 .Xr pthread_mutex_lock 3 ,
-.Xr pthread_mutex_unlock 3 ,
-.Xr pthread_mutex_trylock 3
+.Xr pthread_mutex_trylock 3 ,
+.Xr pthread_mutex_unlock 3
 .Sh STANDARDS
 .Fn pthread_mutex_destroy
 conforms to ISO/IEC 9945-1 ANSI/IEEE
diff --git a/lib/libc_r/man/pthread_mutex_init.3 b/lib/libc_r/man/pthread_mutex_init.3
index 9966e16f6be..d5292ff8e10 100644
--- a/lib/libc_r/man/pthread_mutex_init.3
+++ b/lib/libc_r/man/pthread_mutex_init.3
@@ -64,11 +64,10 @@ The temporarily lacks the resources to create another mutex.
 .El
 .Pp
 .Sh SEE ALSO
-.Xr pthreads 3 ,
 .Xr pthread_mutex_destroy 3 ,
 .Xr pthread_mutex_lock 3 ,
-.Xr pthread_mutex_unlock 3 ,
-.Xr pthread_mutex_trylock 3
+.Xr pthread_mutex_trylock 3 ,
+.Xr pthread_mutex_unlock 3
 .Sh STANDARDS
 .Fn pthread_mutex_init
 conforms to ISO/IEC 9945-1 ANSI/IEEE
diff --git a/lib/libc_r/man/pthread_mutex_lock.3 b/lib/libc_r/man/pthread_mutex_lock.3
index d8cbe96314a..a0aa07d76d6 100644
--- a/lib/libc_r/man/pthread_mutex_lock.3
+++ b/lib/libc_r/man/pthread_mutex_lock.3
@@ -61,11 +61,10 @@ A deadlock would occur if the thread blocked waiting for
 .El
 .Pp
 .Sh SEE ALSO
-.Xr pthreads 3 ,
-.Xr pthread_mutex_unlock 3 ,
-.Xr pthread_mutex_trylock 3 ,
+.Xr pthread_mutex_destroy 3 ,
 .Xr pthread_mutex_init 3 ,
-.Xr pthread_mutex_destroy 3
+.Xr pthread_mutex_trylock 3 ,
+.Xr pthread_mutex_unlock 3
 .Sh STANDARDS
 .Fn pthread_mutex_lock
 conforms to ISO/IEC 9945-1 ANSI/IEEE
diff --git a/lib/libc_r/man/pthread_mutex_trylock.3 b/lib/libc_r/man/pthread_mutex_trylock.3
index 81d2a4dc7e5..9f283801e54 100644
--- a/lib/libc_r/man/pthread_mutex_trylock.3
+++ b/lib/libc_r/man/pthread_mutex_trylock.3
@@ -62,11 +62,10 @@ is already locked.
 .El
 .Pp
 .Sh SEE ALSO
-.Xr pthreads 3 ,
-.Xr pthread_mutex_lock 3 ,
-.Xr pthread_mutex_unlock 3 ,
+.Xr pthread_mutex_destroy 3 ,
 .Xr pthread_mutex_init 3 ,
-.Xr pthread_mutex_destroy 3
+.Xr pthread_mutex_lock 3 ,
+.Xr pthread_mutex_unlock 3
 .Sh STANDARDS
 .Fn pthread_mutex_trylock
 conforms to ISO/IEC 9945-1 ANSI/IEEE
diff --git a/lib/libc_r/man/pthread_mutex_unlock.3 b/lib/libc_r/man/pthread_mutex_unlock.3
index 04fb06832d4..95ba7e68511 100644
--- a/lib/libc_r/man/pthread_mutex_unlock.3
+++ b/lib/libc_r/man/pthread_mutex_unlock.3
@@ -61,11 +61,10 @@ The current thread does not hold a lock on
 .El
 .Pp
 .Sh SEE ALSO
-.Xr pthreads 3 ,
-.Xr pthread_mutex_lock 3 ,
-.Xr pthread_mutex_trylock 3 ,
+.Xr pthread_mutex_destroy 3 ,
 .Xr pthread_mutex_init 3 ,
-.Xr pthread_mutex_destroy 3
+.Xr pthread_mutex_lock 3 ,
+.Xr pthread_mutex_trylock 3
 .Sh STANDARDS
 .Fn pthread_mutex_unlock
 conforms to ISO/IEC 9945-1 ANSI/IEEE
diff --git a/lib/libc_r/man/pthread_once.3 b/lib/libc_r/man/pthread_once.3
index c5d0235b41f..fc50d56bf25 100644
--- a/lib/libc_r/man/pthread_once.3
+++ b/lib/libc_r/man/pthread_once.3
@@ -93,8 +93,6 @@ indicate the error.
 .Sh ERRORS
 None.
 .Pp
-.Sh SEE ALSO
-.Xr pthreads 3
 .Sh STANDARDS
 .Fn pthread_once
 conforms to ISO/IEC 9945-1 ANSI/IEEE
diff --git a/lib/libc_r/man/pthread_rwlock_destroy.3 b/lib/libc_r/man/pthread_rwlock_destroy.3
new file mode 100644
index 00000000000..4e1538a0e5e
--- /dev/null
+++ b/lib/libc_r/man/pthread_rwlock_destroy.3
@@ -0,0 +1,81 @@
+.\" Copyright (c) 1998 Alex Nash
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	$Id: pthread_rwlock_destroy.3,v 1.1 1998/11/09 03:13:15 d Exp $
+.\"	$OpenBSD: pthread_rwlock_destroy.3,v 1.1 1998/11/09 03:13:15 d Exp $
+.\"
+.Dd August 4, 1998
+.Dt PTHREAD_RWLOCK_DESTROY 3
+.Os
+.Sh NAME
+.Nm pthread_rwlock_destroy
+.Nd destroy a read/write lock
+.Sh SYNOPSIS
+.Fd #include <pthread.h>
+.Ft int
+.Fn pthread_rwlock_destroy "pthread_rwlock_t *lock"
+.Sh DESCRIPTION
+The
+.Fn pthread_rwlock_destroy
+function is used to destroy a read/write lock previously created with 
+.Fn pthread_rwlock_init .
+.Sh RETURN VALUES
+If successful, the
+.Fn pthread_rwlock_destroy
+function will return zero.  Otherwise an error number will be returned
+to indicate the error.
+.Sh SEE ALSO
+.Xr pthread_rwlock_init 3 ,
+.Sh STANDARDS
+The
+.Fn pthread_rwlock_destroy
+function is expected to conform to
+.St -susv2 .
+.Sh ERRORS
+The
+.Fn pthread_rwlock_destroy
+function will fail if:
+.Bl -tag -width Er
+.It Bq Er EPERM
+The caller does not have the privilege to perform the operation.
+.El
+.Pp
+The
+.Fn pthread_rwlock_destroy
+function may fail if:
+.Bl -tag -width Er
+.It Bq Er EBUSY
+The system has detected an attempt to destroy the object referenced by
+.Fa lock
+while it is locked.
+.It Bq Er EINVAL
+The value specified by
+.Fa lock
+is invalid.
+.El
+.Sh HISTORY
+The
+.Fn pthread_rwlock_destroy
+function first appeared in
+.Fx 3.0 .
diff --git a/lib/libc_r/man/pthread_rwlock_init.3 b/lib/libc_r/man/pthread_rwlock_init.3
new file mode 100644
index 00000000000..6011fe09463
--- /dev/null
+++ b/lib/libc_r/man/pthread_rwlock_init.3
@@ -0,0 +1,100 @@
+.\" Copyright (c) 1998 Alex Nash
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	$Id: pthread_rwlock_init.3,v 1.1 1998/11/09 03:13:16 d Exp $
+.\"	$OpenBSD: pthread_rwlock_init.3,v 1.1 1998/11/09 03:13:16 d Exp $
+.\"
+.Dd August 4, 1998
+.Dt PTHREAD_RWLOCK_INIT 3
+.Os
+.Sh NAME
+.Nm pthread_rwlock_init
+.Nd initialize a read/write lock
+.Sh SYNOPSIS
+.Fd #include <pthread.h>
+.Ft int
+.Fn pthread_rwlock_init "pthread_rwlock_t *lock" "const pthread_rwlockattr_t *attr"
+.Sh DESCRIPTION
+The
+.Fn pthread_rwlock_init
+function is used to initialize a read/write lock, with attributes
+specified by
+.Fa attr .
+If
+.Fa attr
+is NULL, the default read/write lock attributes are used.
+.Pp
+The results of calling
+.Fn pthread_rwlock_init
+with an already initialized lock are undefined.
+.Sh RETURN VALUES
+If successful, the
+.Fn pthread_rwlock_init
+function will return zero.  Otherwise an error number will be returned
+to indicate the error.
+.Sh SEE ALSO
+.Xr pthread_rwlock_destroy 3 ,
+.Xr pthread_rwlockattr_init 3 ,
+.Xr pthread_rwlockattr_setpshared 3
+.Sh STANDARDS
+The
+.Fn pthread_rwlock_init
+function is expected to conform to
+.St -susv2 .
+.Sh ERRORS
+The
+.Fn pthread_rwlock_init
+function will fail if:
+.Bl -tag -width Er
+.It Bq Er EAGAIN
+The system lacked the necessary resources (other than memory) to
+initialize the lock.
+.It Bq Er ENOMEM
+Insufficient memory exists to initialize the lock.
+.It Bq Er EPERM
+The caller does not have sufficient privilege to perform the
+operation.
+.El
+.Pp
+The
+.Fn pthread_rwlock_init
+function may fail if:
+.Bl -tag -width Er
+.It Bq Er EBUSY
+The system has detected an attempt to re-initialize the object
+referenced by
+.Fa lock ,
+a previously initialized but not yet destroyed read/write lock.
+.It Bq Er EINVAL
+The value specified by
+.Fa attr
+is invalid.
+.El
+.Sh HISTORY
+The
+.Fn pthread_rwlock_init
+function first appeared in
+.Fx 3.0 .
+.Sh BUGS
+The PTHREAD_PROCESS_SHARED attribute is not supported.
diff --git a/lib/libc_r/man/pthread_rwlock_rdlock.3 b/lib/libc_r/man/pthread_rwlock_rdlock.3
new file mode 100644
index 00000000000..6bfd3f9ce74
--- /dev/null
+++ b/lib/libc_r/man/pthread_rwlock_rdlock.3
@@ -0,0 +1,123 @@
+.\" Copyright (c) 1998 Alex Nash
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	$Id: pthread_rwlock_rdlock.3,v 1.1 1998/11/09 03:13:16 d Exp $
+.\"	$OpenBSD: pthread_rwlock_rdlock.3,v 1.1 1998/11/09 03:13:16 d Exp $
+.\"
+.Dd August 4, 1998
+.Dt PTHREAD_RWLOCK_RDLOCK 3
+.Os
+.Sh NAME
+.Nm pthread_rwlock_rdlock ,
+.Nm pthread_rwlock_tryrdlock
+.Nd acquire a read/write lock for reading
+.Sh SYNOPSIS
+.Fd #include <pthread.h>
+.Ft int
+.Fn pthread_rwlock_rdlock "pthread_rwlock_t *lock"
+.Ft int
+.Fn pthread_rwlock_tryrdlock "pthread_rwlock_t *lock"
+.Sh DESCRIPTION
+The
+.Fn pthread_rwlock_rdlock
+function acquires a read lock on
+.Fa lock
+provided that
+.Fa lock
+is not presently held for writing and no writer threads are
+presently blocked on the lock.  If the read lock cannot be
+immediately acquired, the calling thread blocks until it can
+acquire the lock.
+.Pp
+The
+.Fn pthread_rwlock_tryrdlock
+function performs the same action, but does not block if the lock
+cannot be immediately obtained (i.e. the lock is held for writing
+or there are waiting writers).
+.Pp
+A thread may hold multiple concurrent read locks.  If so,
+.Fn pthread_rwlock_unlock
+must be called once for each lock obtained.
+.Pp
+The results of acquiring a read lock while the calling thread holds
+a write lock are undefined.
+.Sh IMPLEMENTATION NOTES
+To prevent writer starvation, writers are favored over readers.
+.Sh RETURN VALUES
+If successful, the
+.Fn pthread_rwlock_rdlock
+and
+.Fn pthread_rwlock_tryrdlock
+functions will return zero.  Otherwise an error number will be returned
+to indicate the error.
+.Sh SEE ALSO
+.Xr pthread_rwlock_init 3 ,
+.Xr pthread_rwlock_trywrlock 3 ,
+.Xr pthread_rwlock_unlock 3 ,
+.Xr pthread_rwlock_wrlock 3
+.Sh STANDARDS
+The
+.Fn pthread_rwlock_rdlock
+and
+.Fn pthread_rwlock_tryrdlock
+functions are expected to conform to
+.St -susv2 .
+.Sh ERRORS
+The
+.Fn pthread_rwlock_tryrdlock
+function will fail if:
+.Bl -tag -width Er
+.It Bq Er EBUSY
+The lock could not be acquired because a writer holds the lock or
+was blocked on it.
+.El
+.Pp
+The
+.Fn pthread_rwlock_rdlock
+and
+.Fn pthread_rwlock_tryrdlock
+functions may fail if:
+.Bl -tag -width Er
+.It Bq Er EAGAIN
+The lock could not be acquired because the maximum number of read locks
+against
+.Fa lock
+has been exceeded.
+.It Bq Er EDEADLK
+The current thread already owns
+.Fa lock
+for writing.
+.It Bq Er EINVAL
+The value specified by
+.Fa lock
+is invalid.
+.It Bq Er ENOMEM
+Insufficient memory exists to initialize the lock (applies to
+statically initialized locks only).
+.El
+.Sh HISTORY
+The
+.Fn pthread_rwlock_rdlock
+function first appeared in
+.Fx 3.0 .
diff --git a/lib/libc_r/man/pthread_rwlock_unlock.3 b/lib/libc_r/man/pthread_rwlock_unlock.3
new file mode 100644
index 00000000000..1932429a103
--- /dev/null
+++ b/lib/libc_r/man/pthread_rwlock_unlock.3
@@ -0,0 +1,80 @@
+.\" Copyright (c) 1998 Alex Nash
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	$Id: pthread_rwlock_unlock.3,v 1.1 1998/11/09 03:13:16 d Exp $
+.\"	$OpenBSD: pthread_rwlock_unlock.3,v 1.1 1998/11/09 03:13:16 d Exp $
+.\"
+.Dd August 4, 1998
+.Dt PTHREAD_RWLOCK_UNLOCK 3
+.Os
+.Sh NAME
+.Nm pthread_rwlock_unlock
+.Nd release a read/write lock
+.Sh SYNOPSIS
+.Fd #include <pthread.h>
+.Ft int
+.Fn pthread_rwlock_unlock "pthread_rwlock_t *lock"
+.Sh DESCRIPTION
+The
+.Fn pthread_rwlock_unlock
+function is used to release the read/write lock previously obtained by
+.Fn pthread_rwlock_rdlock ,
+.Fn pthread_rwlock_wrlock ,
+.Fn pthread_rwlock_tryrdlock ,
+or
+.Fn pthread_rwlock_trywrlock .
+.Sh RETURN VALUES
+If successful, the
+.Fn pthread_rwlock_unlock
+function will return zero.  Otherwise an error number will be returned
+to indicate the error.
+.Pp
+The results are undefined if
+.Fa lock
+is not held by the calling thread.
+.Sh SEE ALSO
+.Xr pthread_rwlock_rdlock 3 ,
+.Xr pthread_rwlock_wrlock 3
+.Sh STANDARDS
+The
+.Fn pthread_rwlock_unlock
+function is expected to conform to
+.St -susv2 .
+.Sh ERRORS
+The
+.Fn pthread_rwlock_unlock
+function may fail if:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+The value specified by
+.Fa lock
+is invalid.
+.It Bq Er EPERM
+The current thread does not own the read/write lock.
+.El
+.Sh HISTORY
+The
+.Fn pthread_rwlock_unlock
+function first appeared in
+.Fx 3.0 .
diff --git a/lib/libc_r/man/pthread_rwlock_wrlock.3 b/lib/libc_r/man/pthread_rwlock_wrlock.3
new file mode 100644
index 00000000000..881e00c856d
--- /dev/null
+++ b/lib/libc_r/man/pthread_rwlock_wrlock.3
@@ -0,0 +1,103 @@
+.\" Copyright (c) 1998 Alex Nash
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	$Id: pthread_rwlock_wrlock.3,v 1.1 1998/11/09 03:13:16 d Exp $
+.\"	$OpenBSD: pthread_rwlock_wrlock.3,v 1.1 1998/11/09 03:13:16 d Exp $
+.\"
+.Dd August 4, 1998
+.Dt PTHREAD_RWLOCK_WRLOCK 3
+.Os
+.Sh NAME
+.Nm pthread_rwlock_wrlock ,
+.Nm pthread_rwlock_trywrlock
+.Nd acquire a read/write lock for writing
+.Sh SYNOPSIS
+.Fd #include <pthread.h>
+.Ft int
+.Fn pthread_rwlock_wrlock "pthread_rwlock_t *lock"
+.Ft int
+.Fn pthread_rwlock_trywrlock "pthread_rwlock_t *lock"
+.Sh DESCRIPTION
+The
+.Fn pthread_rwlock_wrlock
+function blocks until a write lock can be acquired against
+.Fa lock .
+The
+.Fn pthread_rwlock_trywrlock
+function performs the same action, but does not block if the lock
+cannot be immediately obtained.
+.Pp
+The results are undefined if the calling thread already holds the
+lock at the time the call is made.
+.Sh IMPLEMENTATION NOTES
+To prevent writer starvation, writers are favored over readers.
+.Sh RETURN VALUES
+If successful, the
+.Fn pthread_rwlock_wrlock
+and
+.Fn pthread_rwlock_trywrlock
+functions will return zero.  Otherwise an error number will be returned
+to indicate the error.
+.Sh SEE ALSO
+.Xr pthread_rwlock_trywrlock 3 ,
+.Xr pthread_rwlock_unlock 3 ,
+.Xr pthread_rwlock_wrlock 3
+.Sh STANDARDS
+The
+.Fn pthread_rwlock_wrlock
+and
+.Fn pthread_rwlock_trywrlock
+functions are expected to conform to
+.St -susv2 .
+.Sh ERRORS
+The
+.Fn pthread_rwlock_trywrlock
+function will fail if:
+.Bl -tag -width Er
+.It Bq Er EBUSY
+The calling thread is not able to acquire the lock without blocking.
+.El
+.Pp
+The
+.Fn pthread_rwlock_wrlock
+and
+.Fn pthread_rwlock_trywrlock
+functions may fail if:
+.Bl -tag -width Er
+.It Bq Er EDEADLK
+The calling thread already owns the read/write lock (for reading
+or writing).
+.It Bq Er EINVAL
+The value specified by
+.Fa lock
+is invalid.
+.It Bq Er ENOMEM
+Insufficient memory exists to initialize the lock (applies to
+statically initialized locks only).
+.El
+.Sh HISTORY
+The
+.Fn pthread_rwlock_wrlock
+function first appeared in
+.Fx 3.0 .
diff --git a/lib/libc_r/man/pthread_rwlockattr_destroy.3 b/lib/libc_r/man/pthread_rwlockattr_destroy.3
new file mode 100644
index 00000000000..8deab9d214c
--- /dev/null
+++ b/lib/libc_r/man/pthread_rwlockattr_destroy.3
@@ -0,0 +1,69 @@
+.\" Copyright (c) 1998 Alex Nash
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	$Id: pthread_rwlockattr_destroy.3,v 1.1 1998/11/09 03:13:16 d Exp $
+.\"	$OpenBSD: pthread_rwlockattr_destroy.3,v 1.1 1998/11/09 03:13:16 d Exp $
+.\"
+.Dd August 4, 1998
+.Dt PTHREAD_RWLOCKATTR_DESTROY 3
+.Os
+.Sh NAME
+.Nm pthread_rwlockattr_destroy
+.Nd destroy a read/write lock
+.Sh SYNOPSIS
+.Fd #include <pthread.h>
+.Ft int
+.Fn pthread_rwlockattr_destroy "pthread_rwlockattr_t *attr"
+.Sh DESCRIPTION
+The
+.Fn pthread_rwlockattr_destroy
+function is used to destroy a read/write lock attribute object
+previously created with 
+.Fn pthread_rwlockattr_init .
+.Sh RETURN VALUES
+If successful, the
+.Fn pthread_rwlockattr_destroy
+function will return zero.  Otherwise an error number will be returned
+to indicate the error.
+.Sh SEE ALSO
+.Xr pthread_rwlockattr_init 3 ,
+.Sh STANDARDS
+The
+.Fn pthread_rwlockattr_destroy
+function is expected to conform to
+.St -susv2 .
+.Sh ERRORS
+.Fn pthread_rwlockattr_destroy
+may fail if:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+The value specified by
+.Fa attr
+is invalid.
+.El
+.Sh HISTORY
+The
+.Fn pthread_rwlockattr_destroy
+function first appeared in
+.Fx 3.0 .
diff --git a/lib/libc_r/man/pthread_rwlockattr_getpshared.3 b/lib/libc_r/man/pthread_rwlockattr_getpshared.3
new file mode 100644
index 00000000000..de98aab2f5f
--- /dev/null
+++ b/lib/libc_r/man/pthread_rwlockattr_getpshared.3
@@ -0,0 +1,81 @@
+.\" Copyright (c) 1998 Alex Nash
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	$Id: pthread_rwlockattr_getpshared.3,v 1.1 1998/11/09 03:13:16 d Exp $
+.\"	$OpenBSD: pthread_rwlockattr_getpshared.3,v 1.1 1998/11/09 03:13:16 d Exp $
+.\"
+.Dd August 4, 1998
+.Dt PTHREAD_RWLOCKATTR_GETPSHARED 3
+.Os
+.Sh NAME
+.Nm pthread_rwlockattr_getpshared
+.Nd set the process shared attribute
+.Sh SYNOPSIS
+.Fd #include <pthread.h>
+.Ft int
+.Fn pthread_rwlockattr_getpshared "pthread_rwlockattr_t *attr" "int *pshared"
+.Sh DESCRIPTION
+The
+.Fn pthread_rwlockattr_getpshared
+function is used to get the process shared setting of a read/write
+lock attribute object.  The setting is returned via
+.Fa pshared ,
+and may be one of two values:
+.Bl -hang -offset flag -width 123456789012345678901234
+.It Ar PTHREAD_PROCESS_SHARED
+Any thread of any process that has access to the memory where the
+read/write lock resides can manipulate the lock.
+.It Ar PTHREAD_PROCESS_PRIVATE
+Only threads created within the same process as the thread that
+initialized the read/write lock can manipulate the lock.  This is
+the default value.
+.El
+.Sh RETURN VALUES
+If successful, the
+.Fn pthread_rwlockattr_getpshared
+function will return zero.  Otherwise an error number will be returned
+to indicate the error.
+.Sh SEE ALSO
+.Xr pthread_rwlock_init 3 ,
+.Xr pthread_rwlockattr_init 3 ,
+.Xr pthread_rwlockattr_setpshared 3
+.Sh STANDARDS
+The
+.Fn pthread_rwlockattr_getpshared
+function is expected to conform to
+.St -susv2 .
+.Sh ERRORS
+.Fn pthread_rwlockattr_getpshared
+may fail if:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+The value specified by
+.Fa attr
+is invalid.
+.El
+.Sh HISTORY
+The
+.Fn pthread_rwlockattr_getpshared
+function first appeared in
+.Fx 3.0 .
diff --git a/lib/libc_r/man/pthread_rwlockattr_init.3 b/lib/libc_r/man/pthread_rwlockattr_init.3
new file mode 100644
index 00000000000..ff03334d5e5
--- /dev/null
+++ b/lib/libc_r/man/pthread_rwlockattr_init.3
@@ -0,0 +1,68 @@
+.\" Copyright (c) 1998 Alex Nash
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	$Id: pthread_rwlockattr_init.3,v 1.1 1998/11/09 03:13:16 d Exp $
+.\"	$OpenBSD: pthread_rwlockattr_init.3,v 1.1 1998/11/09 03:13:16 d Exp $
+.\"
+.Dd August 4, 1998
+.Dt PTHREAD_RWLOCKATTR_INIT 3
+.Os
+.Sh NAME
+.Nm pthread_rwlockattr_init
+.Nd initialize a read/write lock
+.Sh SYNOPSIS
+.Fd #include <pthread.h>
+.Ft int
+.Fn pthread_rwlockattr_init "pthread_rwlockattr_t *attr"
+.Sh DESCRIPTION
+The
+.Fn pthread_rwlockattr_init
+function is used to initialize a read/write lock attributes object.
+.Sh RETURN VALUES
+If successful, the
+.Fn pthread_rwlockattr_init
+function will return zero.  Otherwise an error number will be returned
+to indicate the error.
+.Sh SEE ALSO
+.Xr pthread_rwlock_init 3 ,
+.Xr pthread_rwlockattr_destroy 3 ,
+.Xr pthread_rwlockattr_getpshared 3
+.Xr pthread_rwlockattr_setpshared 3
+.Sh STANDARDS
+The
+.Fn pthread_rwlockattr_init
+function is expected to conform to
+.St -susv2 .
+.Sh ERRORS
+.Fn pthread_rwlockattr_init
+will fail if:
+.Bl -tag -width Er
+.It Bq Er ENOMEM
+Insufficient memory exists to initialize the attribute object.
+.El
+.Sh HISTORY
+The
+.Fn pthread_rwlockattr_init
+function first appeared in
+.Fx 3.0 .
diff --git a/lib/libc_r/man/pthread_rwlockattr_setpshared.3 b/lib/libc_r/man/pthread_rwlockattr_setpshared.3
new file mode 100644
index 00000000000..b6b42ca38f8
--- /dev/null
+++ b/lib/libc_r/man/pthread_rwlockattr_setpshared.3
@@ -0,0 +1,87 @@
+.\" Copyright (c) 1998 Alex Nash
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	$Id: pthread_rwlockattr_setpshared.3,v 1.1 1998/11/09 03:13:16 d Exp $
+.\"	$OpenBSD: pthread_rwlockattr_setpshared.3,v 1.1 1998/11/09 03:13:16 d Exp $
+.\"
+.Dd August 4, 1998
+.Dt PTHREAD_RWLOCKATTR_SETPSHARED 3
+.Os
+.Sh NAME
+.Nm pthread_rwlockattr_setpshared
+.Nd set the process shared attribute
+.Sh SYNOPSIS
+.Fd #include <pthread.h>
+.Ft int
+.Fn pthread_rwlockattr_setpshared "pthread_rwlockattr_t *attr" "int *pshared"
+.Sh DESCRIPTION
+The
+.Fn pthread_rwlockattr_setpshared
+function sets the process shared attribute of
+.Fa attr
+to the value referenced by
+.Fa pshared .
+.Fa pshared
+may be one of two values:
+.Bl -hang -offset flag -width 123456789012345678901234
+.It Ar PTHREAD_PROCESS_SHARED
+Any thread of any process that has access to the memory where the
+read/write lock resides can manipulate the lock.
+.It Ar PTHREAD_PROCESS_PRIVATE
+Only threads created within the same process as the thread that
+initialized the read/write lock can manipulate the lock.  This is
+the default value.
+.El
+.Sh RETURN VALUES
+If successful, the
+.Fn pthread_rwlockattr_setpshared
+function will return zero.  Otherwise an error number will be returned
+to indicate the error.
+.Sh SEE ALSO
+.Xr pthread_rwlock_init 3 ,
+.Xr pthread_rwlockattr_init 3 ,
+.Xr pthread_rwlockattr_setpshared 3
+.Sh STANDARDS
+The
+.Fn pthread_rwlockattr_setpshared
+function is expected to conform to
+.St -susv2 .
+.Sh ERRORS
+.Fn pthread_rwlockattr_setpshared
+will fail if:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+The value specified by
+.Fa attr
+or
+.Fa pshared
+is invalid.
+.El
+.Sh HISTORY
+The
+.Fn pthread_rwlockattr_setpshared
+function first appeared in
+.Fx 3.0 .
+.Sh BUGS
+The PTHREAD_PROCESS_SHARED attribute is not supported.
diff --git a/lib/libc_r/man/pthread_self.3 b/lib/libc_r/man/pthread_self.3
index 63cf2dfdafb..46c118af09f 100644
--- a/lib/libc_r/man/pthread_self.3
+++ b/lib/libc_r/man/pthread_self.3
@@ -50,7 +50,6 @@ function returns the thread ID of the calling thread.
 None.
 .Pp
 .Sh SEE ALSO
-.Xr pthreads 3 ,
 .Xr pthread_create 3 ,
 .Xr pthread_equal 3
 .Sh STANDARDS
diff --git a/lib/libc_r/man/pthread_setspecific.3 b/lib/libc_r/man/pthread_setspecific.3
index 448e1872f58..e28cf568213 100644
--- a/lib/libc_r/man/pthread_setspecific.3
+++ b/lib/libc_r/man/pthread_setspecific.3
@@ -81,7 +81,6 @@ value is invalid.
 .El
 .Pp
 .Sh SEE ALSO
-.Xr pthreads 3 ,
 .Xr pthread_getspecific 3 ,
 .Xr pthread_key_create 3 ,
 .Xr pthread_key_delete 3
diff --git a/lib/libc_r/man/pwrite.3 b/lib/libc_r/man/pwrite.3
new file mode 100644
index 00000000000..d8e56f9327b
--- /dev/null
+++ b/lib/libc_r/man/pwrite.3
@@ -0,0 +1,36 @@
+.\" $OpenBSD: pwrite.3,v 1.1 1998/11/09 03:13:16 d Exp $
+.Dd September 7, 1998
+.Os Ox
+.Dt PWRITE 3
+.Sh NAME
+.Nm pwrite
+.Nd atomic seek and write
+.Sh SYNOPSIS
+.Fd #include <pthread.h>
+.Ft ssize_t
+.Fn pwrite "int filedes" "void *buf" "size_t nbytes" "off_t offset"
+.Sh DESCRIPTION
+The
+.Fn pwrite
+function writes
+.Fa nbyte
+bytes from offset
+.Fa offset
+in the file opened on file descriptor
+.Fa filedes.
+.Pp
+This function is provided for use in a threaded, parallel I/O
+environment, where race conditions may exist between two threads 
+non-atomically seeking and writing to the same file descriptor.
+.Sh RETURN VALUES
+The
+.Fn pread
+function returns values identical to
+.Xr write 3 .
+.Sh SEE ALSO
+.Xr pthreads 3 ,
+.Xr write 3 ,
+.Xr pread 3
+.Sh STANDARDS
+.Fn pread
+conforms to TOG SUSv2 .