stack_inbounds(3C) Standard C Library Functions stack_inbounds(3C)NAME
stack_inbounds - determine if address is within stack boundaries
SYNOPSIS
#include <ucontext.h>
int stack_inbounds(void *addr);
DESCRIPTION
The stack_inbounds() function returns a boolean value indicating whether the address specified by addr is within the boundaries of the
stack of the calling thread. The address is compared to the stack boundary information returned by a call to stack_getbounds(3C).
RETURN VALUES
The stack_inbounds() function returns 0 to indicate that addr is not within the current stack bounds, or a non-zero value to indicate that
addr is within the stack bounds.
ERRORS
No errors are defined.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Evolving |
+-----------------------------+-----------------------------+
|MT-Level |Async-Signal-Safe |
+-----------------------------+-----------------------------+
SEE ALSO stack_getbounds(3C), attributes(5)SunOS 5.11 18 Jul 2002 stack_inbounds(3C)
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stack_setbounds(3C) Standard C Library Functions 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 |Evolving |
+-----------------------------+-----------------------------+
|MT-Level |Async-Signal-Safe |
+-----------------------------+-----------------------------+
SEE ALSO getustack(2), _stack_grow(3C), stack_getbounds(3C), stack_inbounds(3C), stack_violation(3C), attributes(5)SunOS 5.11 18 Jul 2002 stack_setbounds(3C)