stack_getbounds - retrieve stack boundaries
int stack_getbounds(stack_t *sp);
The stack_getbounds() function retrieves the stack boun-
daries that the calling thread is currently operating on. If
the thread is currently operating on the alternate signal
stack, this function will retrieve the bounds of that stack.
If successful, stack_getbounds() sets the ss_sp member of
the stack_t structure pointed to by sp to the base of the
stack region and the ss_size member to its size (maximum
extent) in bytes. The ss_flags member is set to SS_ONSTACK
if the calling thread is executing on its alternate signal
stack, and zero otherwise.
Upon successful completion, stack_getbounds() returns 0.
Otherwise, -1 is returned and errno is set to indicate the
The stack_getbounds() function will fail if:
The sp argument does not refer to a valid address.
See attributes(5) for descriptions of the following attri-
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
| Interface Stability | Evolving |
| MT-Level | Async-Signal-Safe |
getustack(2), sigaction(2), sigaltstack(2),
Man(1) output converted with