getdevicerange

- get the label range of a device

Synopsis

cc [flag...] file... -lbsm -ltsol [library...]

#include <tsol/label.h>

blrange_t *getdevicerange(const char *device);

Description

The getdevicerange() function returns the label range of a user-allocatable device.

If label range is not specified for device, getdevicerange() returns the default values of ADMIN_LOW for the lower bound and ADMIN_HIGH for the upper bound of device.

From the command line, list_devices(1) can be used to see the label range of device.

Return Values

The getdevicerange() function returns NULL on failure and sets errno. On successful completion, it returns a pointer to a blrange_t structure which must be freed by the caller, as follows:

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

Attributes

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

Errors

The getdevicerange() function fails if:

EAGAIN

There is not enough memory available to allocate the required bytes. The application could try later.

ENOMEM

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

ENOTSUP

Invalid upper or lower bound for device.

See Also

list_devices(1), free(3C), m_label_free(3TSOL), attributes(5)

Validating the Label Request Against the Printer’s Label Range in Solaris Trusted Extensions Developer’s Guide