--- Libc/Libc-1725.40.4/emulated/brk.2
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@@ -1,150 +0,0 @@
-.\"	$NetBSD: brk.2,v 1.7 1995/02/27 12:31:57 cgd Exp $
-.\"
-.\" Copyright (c) 1980, 1991, 1993
-.\"	The Regents of the University of California.  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.
-.\" 3. All advertising materials mentioning features or use of this software
-.\"    must display the following acknowledgement:
-.\"	This product includes software developed by the University of
-.\"	California, Berkeley and its contributors.
-.\" 4. Neither the name of the University nor the names of its contributors
-.\"    may be used to endorse or promote products derived from this software
-.\"    without specific prior written permission.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
-.\"
-.\"     @(#)brk.2	8.2 (Berkeley) 12/11/93
-.\"
-.Dd December 11, 1993
-.Dt BRK 2
-.Os BSD 4
-.Sh NAME
-.Nm brk ,
-.Nm sbrk
-.Nd change data segment size
-.Sh SYNOPSIS
-.Fd #include <unistd.h>
-.Ft void *
-.Fn brk "const void *addr"
-.Ft void *
-.Fn sbrk "int incr"
-.Sh DESCRIPTION
-.Bf -symbolic
-The brk and sbrk functions are historical curiosities
-left over from earlier days before the advent of virtual memory management.
-.Ef
-The
-.Fn brk
-function
-sets the break or lowest address
-of a process's data segment (uninitialized data) to
-.Fa addr
-(immediately above bss).
-Data addressing is restricted between
-.Fa addr
-and the lowest stack pointer to the stack segment.
-Memory is allocated by
-.Fa brk
-in page size pieces;
-if
-.Fa addr
-is not evenly divisible by the system page size, it is
-increased to the next page boundary.
-.Pp
-.\" The
-.\" .Nm sbrk
-.\" function
-.\" allocates chunks of
-.\" .Fa incr
-.\" bytes
-.\" to the process's data space
-.\" and returns an address pointer.
-.\" The
-.\" .Xr malloc 3
-.\" function utilizes
-.\" .Nm sbrk .
-.\" .Pp
-The current value of the program break is reliably returned by
-.Dq Li sbrk(0)
-(see also 
-.Xr end 3 ) .
-The
-.Xr getrlimit 2
-system call may be used to determine
-the maximum permissible size of the
-.Em data
-segment;
-it will not be possible to set the break
-beyond the
-.Em rlim_max
-value returned from a call to
-.Xr getrlimit ,
-e.g.
-.Dq qetext + rlp\(->rlim_max.
-(see
-.Xr end 3
-for the definition of
-.Em etext ) .
-.Sh RETURN VALUES
-.Nm Brk
-returns a pointer to the new end of memory if successful;
-otherwise -1 with
-.Va errno
-set to indicate why the allocation failed.
-The
-.Nm sbrk
-function returns a pointer to the base of the new storage if successful;
-otherwise -1 with
-.Va errno
-set to indicate why the allocation failed.
-.Sh ERRORS
-.Xr Sbrk
-will fail and no additional memory will be allocated if
-one of the following are true:
-.Bl -tag -width Er
-.It Bq Er ENOMEM
-The limit, as set by
-.Xr setrlimit 2 ,
-was exceeded.
-.It Bq Er ENOMEM
-The maximum possible size of a data segment (compiled into the
-system) was exceeded.
-.It Bq Er ENOMEM
-Insufficient space existed in the swap area
-to support the expansion.
-.El
-.Sh SEE ALSO
-.Xr execve 2 ,
-.Xr getrlimit 2 ,
-.Xr malloc 3 ,
-.Xr mmap 2 ,
-.Xr end 3
-.Sh BUGS
-Setting the break may fail due to a temporary lack of
-swap space.  It is not possible to distinguish this
-from a failure caused by exceeding the maximum size of
-the data segment without consulting 
-.Xr getrlimit .
-.Sh HISTORY
-A
-.Fn brk
-function call appeared in 
-.At v7 .