blcompare(3TSOL)

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUES | EXAMPLES | ATTRIBUTES | SEE ALSO | NOTES

NAME

blcompare, blequal, bilequal, bimequal, bldominates, blstrictdom, bildominates, bimdominates, blinrange- Compare binary labels

SYNOPSIS

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


#include <tsol/label.h>
typedef binary_level_range {
            blevel_t lower_bound;
            blevel_t upper_bound;
} brange_t;

int blequal(const blevel_t * label1 , const blevel_t * label2);
int bldominates(const blevel_t * label1 , const blevel_t * label2);
int blstrictdom(const blevel_t * label1 , const blevel_t * label2);
int blinrange(const blevel_t * label ,const brange_t * range);

DESCRIPTION

These functions compare binary labels for meeting a particular condition.

blequal() compares two levels for equality.

bldominates() compares level label1 for dominance over level label2 . blstrictdom() compares level label1 for strict dominance over level label2 .

blinrange() compares level label for dominance over range -> lower_bound and range -> upper_bound for dominance over level label .

RETURN VALUES

These functions return non-zero if their respective conditions are met, otherwise zero is returned.

EXAMPLES

---

Example 1 Compare two binary labels




The following example shows how to compare all parts of two binary labels:

blequal(bcltosl(&cmw_label1), bcltosl(&cmw_label2)) &&
bilequal(bcltoil(&cmw_label1), bcltoil(&cmw_label2))

---

ATTRIBUTES

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

ATTRIBUTE TYPE	ATTRIBUTE VALUE
Availability	SUNWtsu
MT-Level	MT-Safe

SEE ALSO

Trusted Solaris 8 Reference Manual

bcltobanner(3TSOL) , bltos(3TSOL) , labelinfo(3TSOL)

Trusted Solaris Developer's Guide

SunOS 5.8 Reference Manual

attributes(5)

NOTES

Information labels ( IL s) are not supported in Trusted Solaris 7 and later releases. Trusted Solaris software interprets any IL s on communications and files from systems running earlier releases as ADMIN_LOW .

Objects still have CMW labels, and CMW labels still include the IL component: IL[SL] ; however, the IL component is fixed at ADMIN_LOW .

As a result, Trusted Solaris 7 and later releases have the following characteristics:

• IL s do not display in window labels; SL s (Sensitivity Labels) display alone within brackets.

• IL s do not float.

• Setting an IL on an object has no effect.

• Getting an object's IL will always return ADMIN_LOW .

• Although certain utilities, library functions, and system calls can manipulate IL strings, the resulting IL s are always ADMIN_LOW , and cannot be set on any objects.

Trusted Solaris 8  Last Revised 1 Mar 2000

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUES | EXAMPLES | ATTRIBUTES | SEE ALSO | NOTES