te
 Copyright (c) 2002, Sun Microsystems, Inc. All Rights Reserved.
 The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License.
 You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing. See the License for the specific language governing permissions and limitations under the License.
 When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
 STACK_SETBOUNDS 3C "Jul 18, 2002"
 NAME
stack_setbounds - update stack boundaries

 SYNOPSIS


#include <ucontext.h>

int stack_setbounds(const stack_t *sp);




 DESCRIPTION

The stack_setbounds() function updates the current base and bounds of the
stack for the current thread to the bounds specified by the stack_t
structure pointed to by sp. The ss_sp member refers to the virtual
address of the base of the stack memory. The ss_size member refers to the
size of the stack in bytes. The ss_flags member must be set to 0.

 RETURN VALUES

Upon successful completion, stack_setbounds() returns 0. Otherwise, -1
is returned and errno is set to indicate the error.

 ERRORS

The stack_setbounds() function will fail if:
EFAULT


The sp argument does not refer to a valid address or the ss_sp
member of the stack_t structure pointed to by sp points to an
illegal address.



EINVAL


The ss_sp member of the stack_t structure pointed to by sp is not
properly aligned, the ss_size member is too small or is not properly
aligned, or the ss_flags member is non-zero.




 USAGE

The stack_setbounds() function is intended for use by applications that
are managing their own alternate stacks.

 ATTRIBUTES

See attributes(7) for descriptions of the following attributes:






ATTRIBUTE TYPE ATTRIBUTE VALUE
Interface Stability Evolving
MT-Level Async-Signal-Safe



 SEE ALSO

 getustack (2),  _stack_grow (3C),  stack_getbounds (3C),  stack_inbounds (3C),  stack_violation (3C),  attributes (7)