man pages section 3: Basic Library Functions

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Updated: July 2014
 
 

stack_setbounds(3C)

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(5) for descriptions of the following attributes:

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

See Also

getustack(2), _stack_grow(3C), stack_getbounds(3C), stack_inbounds(3C), stack_violation(3C), attributes(5)