sbsltos(3TSOL)

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUES | EXAMPLES | PROCESS ATTRIBUTES | FILES | ATTRIBUTES | SEE ALSO | WARNINGS | NOTES

NAME

sbltos, sbcltos, sbsltos, sbiltos, sbcleartos- Translate binary labels to canonical character-coded labels

SYNOPSIS

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


#include <tsol/label.h>

char * sbcltos(const bclabel_t * label , const int len);
char * sbsltos(const bslabel_t * label , const int len);
char * sbcleartos(const bclear_t * clearance , const int len);

DESCRIPTION

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.

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, and a clipped indicator, "->", is prepended to information labels. However, information labels ( IL s) are now obsolete. See NOTES below. The character-coded label begins with a classification name separated with a single space character from the list of words making up the remainder of the label. The binary labels must be of the proper defined type and dominated by the process's sensitivity label. In the case of a binary CMW label, the sensitivity label portion must also dominate the information label portion. A len of 0 (zero) returns the entire string with no clipping.

sbcltos() translates a binary CMW label into a clipped string of the form:

INFORMATION LABEL  [ SENSITIVITY LABEL ]

using the long form of the words in the information and sensitivity labels, the long form of the classification name of the information label, and the short form of the classification name of the sensitivity label. The INFORMATION LABEL is clipped first until there is only one character of it remaining, then the SENSITIVITY LABEL is clipped. If len is less than the minimum number of characters, eight, the translation will fail. However, information labels ( IL s) are now obsolete. See NOTES below.

sbsltos() 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.

sbcleartos() 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 may not be the same as the translation of a sensitivity label. These functions use different tables of the label_encodings file which may contain different words and constraints.

RETURN VALUES

These routines return a pointer to a statically allocated string that contains the result of the translation, or (char *)0 if the translation fails for any reason.

EXAMPLES

sbcltos

Assume that a CMW Label is:

---

UNAVAILABLE LOWER DRAWER [UN TOP/MIDDLE/LOWER DRAWER]

---

when clipped to twelve characters it is:

---

->U [UN TO<-

---

sbsltos

Assume that a Sensitivity Label is:

---

UN TOP/MIDDLE/LOWER DRAWER

---

when clipped to ten characters it is:

---

UN TOP/M<-

---

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 configured in the label_encodings file. A value of External specifies that ADMIN_LOW and ADMIN_HIGH labels are mapped to the lowest and highest 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.

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
Availability	SUNWtsu
MT-Level	Unsafe

SEE ALSO

Trusted Solaris 8 Reference Manual

bcltobanner(3TSOL) , blcompare(3TSOL) , bltocolor(3TSOL) , blvalid(3TSOL) , hextob(3TSOL)

Trusted Solaris Developer's Guide

SunOS 5.8 Reference Manual

attributes(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

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 | PROCESS ATTRIBUTES | FILES | ATTRIBUTES | SEE ALSO | WARNINGS | NOTES