PSET_SETATTR(2) System Calls PSET_SETATTR(2)

NAME

pset_setattr, pset_getattr - set or get processor set attributes

SYNOPSIS

#include <sys/pset.h>

int pset_setattr(psetid_t pset, uint_t attr);


int pset_getattr(psetid_t pset, uint_t *attr);

DESCRIPTION

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 the {PRIV_SYS_RES_CONFIG}
privilege to be asserted in the effective set of the
calling process.


The binding of LWPs and processes to processor sets is controlled by
pset_bind(2). When the 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
requires the {PRIV_SYS_RES_CONFIG} privilege to be asserted in the
effective set of the calling process.

RETURN VALUES

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

ERRORS

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.

The caller is in a non-global zone, the pools facility is
active, and the processor is not a member of the zone's
pool's processor set.


ENOTSUP
The pools facility is active. See pooladm(8) and
pool_set_status(3POOL) for information about enabling and
disabling the pools facility.

ATTRIBUTES

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


+--------------------+-------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-------------------+
|Interface Stability | Stable |
+--------------------+-------------------+
|MT-Level | Async-Signal-Safe |
+--------------------+-------------------+

SEE ALSO

pset_bind(2), pool_set_status(3POOL), attributes(7), pooladm(8),
psrset(8), zoneadm(8)

February 21, 2023 PSET_SETATTR(2)