, m_label_alloc

, m_label_dup

, m_label_free

- m_label functions

Synopsis

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

#include <tsol/label.h>

m_label_t *m_label_alloc(const m_label_type_t label_type);

int m_label_dup(m_label_t **dst, const m_label_t *src);

void m_label_free(m_label_t *label);

Description

The m_label_alloc() function allocates resources for a new label. label_type defines the type for a newly allocated label. The label type can be:

MAC_LABEL

A Mandatory Access Control (MAC) label.

USER_CLEAR

A user clearance.

The m_label_dup() function allocates resources for a new dst label. The function returns a pointer to the allocated label, which is an exact copy of the src label. The caller is responsible for freeing the allocated resources by calling m_label_free().

The m_label_free() function frees resources that are associated with the previously allocated label.

Return Values

Upon successful completion, the m_label_alloc() function returns a pointer to the newly allocated label. Otherwise, m_label_alloc() returns NULL and errno is set to indicate the error.

Upon successful completion, the m_label_dup() function returns zero (0). Otherwise, -1 is returned and errno is set to indicate the error.

Errors

EINVAL

Invalid parameter.

ENOMEM

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

Attributes

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

See Also

label_to_str(3TSOL), str_to_label(3TSOL), label_encodings(4), attributes(5), labels(5)

Determining Whether the Printing Service Is Running in a Labeled Environment in Solaris Trusted Extensions Developer’s Guide