GETUSERRANGE(3TSOL) Trusted Extensions Library Functions GETUSERRANGE(3TSOL)

getuserrange - get the label range of a user

cc [flags...] file... -ltsol [library...]

#include <tsol/label.h>
m_range_t *getuserrange(const char *username);

The getuserrange() function returns the label range of username. The lower bound in the range is used as the initial workspace label when a user logs into a multilevel desktop. The upper bound, or clearance, is used as an upper limit to the available labels that a user can assign to labeled workspaces.

The default value for a user's label range is specified in label_encodings(4). Overriding values for individual users are specified in user_attr(5).

The getuserrange() function returns NULL if the memory allocation fails. Otherwise, the function returns a structure which must be freed by the caller, as follows:


m_range_t  *range;

...
m_label_free(range->lower_bound);
m_label_free(range->upper_bound);
free(range);

The getuserrange() function will fail if:

ENOMEM

The physical limits of the system are exceeded by size bytes of memory which cannot be allocated.

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

ATTRIBUTE TYPE ATTRIBUTE VALUE
Interface Stability See below.
MT-Level MT-Safe

The getuserrange() function is Committed for systems that implement the Defense Intelligence Agency (DIA) MAC policy of label_encodings(5). Other policies might exist in a future release of Trusted Extensions that might make obsolete or supplement label_encodings.

free(3C), libtsol(3LIB), m_label_free(3TSOL), label_encodings(5), user_attr(5), attributes(7)

The functionality described on this manual page is available only if the system is configured with Trusted Extensions.

July 20, 2007 OmniOS