--- Libc/Libc-825.25/sys/pthread_sigmask.2
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@@ -1,104 +0,0 @@
-.\" Copyright (C) 2000 Jason Evans <jasone@FreeBSD.org>.
-.\" 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(s), this list of conditions and the following disclaimer as
-.\"    the first lines of this file unmodified other than the possible
-.\"    addition of one or more copyright notices.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\"    notice(s), 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 COPYRIGHT HOLDER(S) ``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 COPYRIGHT HOLDER(S) 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,
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-.\"
-.\" $FreeBSD: src/lib/libc_r/man/pthread_sigmask.3,v 1.9 2001/10/01 16:09:09 ru Exp $
-.Dd April 27, 2000
-.Dt PTHREAD_SIGMASK 2
-.Os
-.Sh NAME
-.Nm pthread_sigmask
-.Nd examine and/or change a thread's signal mask
-.Sh SYNOPSIS
-.In signal.h
-.Ft int
-.Fo pthread_sigmask
-.Fa "int how"
-.Fa "const sigset_t *restrict set"
-.Fa "sigset_t *restrict oset"
-.Fc
-.Sh DESCRIPTION
-The
-.Fn pthread_sigmask
-function examines and/or changes the calling thread's signal mask.
-.Pp
-If
-.Fa set
-is not
-.Dv NULL ,
-it specifies a set of signals to be modified, and
-.Fa how
-specifies what to set the signal mask to:
-.Bl -tag -width SIG_UNBLOCK
-.It Dv SIG_BLOCK
-Union of the current mask and
-.Fa set .
-.It Dv SIG_UNBLOCK
-Intersection of the current mask and the complement of
-.Fa set .
-.It Dv SIG_SETMASK
-.Fa set .
-.El
-.Pp
-If
-.Fa oset
-is not NULL, the previous signal mask is stored in the location pointed to by
-.Fa oset .
-.Pp
-.Dv SIGKILL
-and
-.Dv SIGSTOP
-cannot be blocked, and will be silently ignored if included in the signal mask.
-.Sh RETURN VALUES
-If successful,
-.Fn pthread_sigmask
-returns 0.
-Otherwise, an error is returned.
-.Sh ERRORS
-.Fn pthread_sigmask
-will fail if:
-.Bl -tag -width Er
-.It Bq Er EINVAL
-.Fa how
-is not one of the defined values.
-.El
-.Sh LEGACY SYNOPSIS
-.Fd #include <pthread.h>
-.Fd #include <signal.h>
-.Pp
-The include file
-.In pthread.h
-is necessary.
-.Sh SEE ALSO
-.Xr sigaction 2 ,
-.Xr sigpending 2 ,
-.Xr sigprocmask 2 ,
-.Xr sigsuspend 2 ,
-.Xr sigsetops 3 ,
-.Xr compat 5
-.Sh STANDARDS
-.Fn pthread_sigmask
-conforms to ISO/IEC 9945-1:1996 (``POSIX.1'')