sbltos(3TSOL) Trusted Extensions Library Functions sbltos(3TSOL)
NAME
sbltos, sbsltos, sbcleartos - translate binary labels to canonical character-coded labels
SYNOPSIS
cc [flag...] file... -ltsol [library...]
#include <tsol/label.h>
char *sbsltos(const m_label_t *label, const int len);
char *sbcleartos(const m_label_t *clearance, const int len);
DESCRIPTION
These functions translate binary labels into canonical strings that are clipped to the number of printable characters specified in len.
Clipping is required if the number of characters of the translated string is greater than len. Clipping is done by truncating the label on
the right to two characters less than the specified number of characters. A clipped indicator, "<-", is appended to sensitivity labels and
clearances. The character-coded label begins with a classification name separated with a single space character from the list of words mak-
ing up the remainder of the label. The binary labels must be of the proper defined type and dominated by the process's sensitivity label. A
len of 0 (zero) returns the entire string with no clipping.
The sbsltos() function translates a binary sensitivity label into a clipped string using the long form of the words and the short form of
the classification name. If len is less than the minimum number of characters (three), the translation fails.
The sbcleartos() function translates a binary clearance into a clipped string using the long form of the words and the short form of the
classification name. If len is less than the minimum number of characters (three), the translation fails. The translation of a clearance
might not be the same as the translation of a sensitivity label. These functions use different tables of the label_encodings file which
might contain different words and constraints.
The calling process must have PRIV_SYS_TRANS_LABEL in its set of effective privileges to perform label translation on labels that dominate
the current process's sensitivity label.
Process Attributes
If the VIEW_EXTERNAL or VIEW_INTERNAL flags are not specified, translation of ADMIN_LOW and ADMIN_HIGH labels is controlled by the label
view process attribute flags. If no label view process attribute flags are defined, their translation is controlled by the label view con-
figured in the label_encodings file. A value of External specifies that ADMIN_LOW and ADMIN_HIGH labels are mapped to the lowest and high-
est labels defined in the label_encodings file. A value of Internal specifies that the ADMIN_LOW and ADMIN_HIGH labels are translated to
the admin low name and admin high name strings specified in the label_encodings file. If no such names are specified, the strings
"ADMIN_LOW" and "ADMIN_HIGH" are used.
RETURN VALUES
These functions return a pointer to a statically allocated string that contains the result of the translation, or (char *)0 if the transla-
tion fails for any reason.
EXAMPLES
sbsltos()
Assume that a sensitivity label is:
UN TOP/MIDDLE/LOWER DRAWER
When clipped to ten characters it is:
UN TOP/M<-
sbcleartos()
Assume that a clearance is:
UN TOP/MIDDLE/LOWER DRAWER
When clipped to ten characters it is:
UN TOP/M<-
FILES
/etc/security/tsol/label_encodings
The label encodings file contains the classification names, words, constraints, and values for the defined labels of this system.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Obsolete |
+-----------------------------+-----------------------------+
|MT-Level |Unsafe |
+-----------------------------+-----------------------------+
These functions are obsolete and retained for ease of porting. They might be removed in a future Solaris Trusted Extensions release. Use
the label_to_str(3TSOL) function instead.
SEE ALSO
label_to_str(3TSOL), libtsol(3LIB), attributes(5), labels(5)
WARNINGS
All these functions share the same statically allocated string storage. They are not MT-Safe. Subsequent calls to any of these functions
will overwrite that string with the newly translated string.
NOTES
The functionality described on this manual page is available only if the system is configured with Trusted Extensions.
SunOS 5.11 20 Jul 2007 sbltos(3TSOL)