'\" te
.\" Copyright (c) 2007, Sun Microsystems Inc. All Rights Reserved.
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.TH SBLTOS 3TSOL "Jul 20, 2007"
.SH NAME
sbltos, sbsltos, sbcleartos \- translate binary labels to canonical
character-coded labels
.SH SYNOPSIS
.LP
.nf
\fBcc\fR [\fIflag\fR...] \fIfile\fR... \fB-ltsol\fR [\fIlibrary\fR...]
.fi

.LP
.nf
#include <tsol/label.h>

\fBchar *\fR\fBsbsltos\fR(\fBconst m_label_t *\fR\fIlabel\fR, \fBconst int\fR \fIlen\fR);
.fi

.LP
.nf
\fBchar *\fR\fBsbcleartos\fR(\fBconst m_label_t *\fR\fIclearance\fR, \fBconst int\fR \fIlen\fR);
.fi

.SH DESCRIPTION
.sp
.LP
These functions translate binary labels into canonical strings that are clipped
to the number of printable characters specified in \fIlen\fR. Clipping is
required if the number of characters of the translated string is greater than
\fIlen\fR. Clipping is done by truncating the label on the right to two
characters less than the specified number of characters. A clipped indicator,
"<\(mi", 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 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. A \fIlen\fR of 0 (zero) returns the entire string with no clipping.
.sp
.LP
The \fBsbsltos()\fR 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 \fIlen\fR is less than the minimum number of characters
(three), the translation fails.
.sp
.LP
The \fBsbcleartos()\fR 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 \fIlen\fR 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 \fBlabel_encodings\fR file which might contain different words
and constraints.
.sp
.LP
The calling process must have \fBPRIV_SYS_TRANS_LABEL\fR in its set of
effective privileges to perform label translation on labels that dominate the
current process's sensitivity label.
.SS "Process Attributes"
.sp
.LP
If the \fBVIEW_EXTERNAL\fR or \fBVIEW_INTERNAL\fR flags are not specified,
translation of \fBADMIN_LOW\fR and \fBADMIN_HIGH\fR 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 \fBlabel_encodings\fR file. A value of External specifies that
\fBADMIN_LOW\fR and \fBADMIN_HIGH\fR labels are mapped to the lowest and
highest labels defined in the \fBlabel_encodings\fR file. A value of Internal
specifies that the \fBADMIN_LOW\fR and \fBADMIN_HIGH\fR labels are translated
to the \fBadmin low name\fR and \fBadmin high name\fR strings specified in the
\fBlabel_encodings\fR file. If no such names are specified, the strings
"\fBADMIN_LOW\fR" and "\fBADMIN_HIGH\fR" are used.
.SH RETURN VALUES
.sp
.LP
These functions return a pointer to a statically allocated string that contains
the result of the translation, or \fB(char\fR \fB*)0\fR if the translation
fails for any reason.
.SH EXAMPLES
.SS "\fBsbsltos()\fR"
.sp
.LP
Assume that a sensitivity label is:
.sp
.in +2
.nf
UN TOP/MIDDLE/LOWER DRAWER
.fi
.in -2
.sp

.sp
.LP
When clipped to ten characters it is:
.sp
.in +2
.nf
UN TOP/M<\(mi
.fi
.in -2
.sp

.SS "\fBsbcleartos()\fR"
.sp
.LP
Assume that a clearance is:
.sp
.in +2
.nf
UN TOP/MIDDLE/LOWER DRAWER
.fi
.in -2
.sp

.sp
.LP
When clipped to ten characters it is:
.sp
.in +2
.nf
UN TOP/M<\(mi
.fi
.in -2
.sp

.SH FILES
.sp
.ne 2
.na
\fB\fB/etc/security/tsol/label_encodings\fR\fR
.ad
.sp .6
.RS 4n
The label encodings file contains the classification names, words, constraints,
and values for the defined labels of this system.
.RE

.SH ATTRIBUTES
.sp
.LP
See \fBattributes\fR(5) for descriptions of the following attributes:
.sp

.sp
.TS
box;
c | c
l | l .
ATTRIBUTE TYPE	ATTRIBUTE VALUE
_
Interface Stability	Obsolete
_
MT-Level	Unsafe
.TE

.sp
.LP
These functions are obsolete and retained for ease of porting. They might be
removed in a future Solaris Trusted Extensions release. Use the
\fBlabel_to_str\fR(3TSOL) function instead.
.SH SEE ALSO
.sp
.LP
\fBlabel_to_str\fR(3TSOL), \fBlibtsol\fR(3LIB), \fBattributes\fR(5),
\fBlabels\fR(5)
.SH WARNINGS
.sp
.LP
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.
.SH NOTES
.sp
.LP
The functionality described on this manual page is available only if the system
is configured with Trusted Extensions.