The pset_setattr() function sets attributes of the processor set specified by pset. The bitmask of attributes to be set or cleared is specified by attr.

The pset_getattr function returns attributes of the processor set specified by pset. On successful return, attr will contain the bitmask of attributes for the specified processor set.

The value of the attr argument is the bitwise inclusive-OR of these attributes, defined in <sys/pset.h>:

PSET_NOESCAPE

Unbinding of LWPs from the processor set with this attribute requires superuser privileges.

The binding of LWPs and processes to processor sets is controlled by pset_bind(2). When PSET_NOESCAPE attribute is cleared, a process calling pset_bind() can clear the processor set binding of any LWP whose real or effective user ID matches its own real of effective user ID. Setting PSET_NOESCAPE attribute forces pset_bind() to require superuser privileges for such an operation.

Upon successful completion, these functions return 0. Otherwise, -1 is returned and errno is set to indicate the error.

These function will fail if:

EFAULT

The location pointed to by attr was not writable by the user.

EINVAL

An invalid processor set ID was specified.

See attributes(5) for descriptions of the following attributes:

psrset(1M), pset_bind(2), attributes(5)