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bltos(3TSOL)	     Trusted Extensions Library Functions	  bltos(3TSOL)

NAME
       bltos,  bsltos,	bcleartos - translate binary labels to character coded
       labels

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

       #include <tsol/label.h>

       int bsltos(const m_label_t *label, char **string,
	   const int str_len, const int flags);

       int bcleartos(const m_label_t *label, char **string,
	   const int str_len, const int flags);

DESCRIPTION
       These functions translate binary labels into strings controlled by  the
       value of the flags parameter.

       The  bsltos()  function	translates  a  binary sensitivity label into a
       string. The applicable flags are LONG_CLASSIFICATION or SHORT_CLASSIFI‐
       CATION,	LONG_WORDS or SHORT_WORDS, VIEW_EXTERNAL or VIEW_INTERNAL, and
       NO_CLASSIFICATION. A flags value 0 is equivalent to  (SHORT_CLASSIFICA‐
       TION | LONG_WORDS).

       The  bcleartos()	 function translates a binary clearance into a string.
       The applicable flags are LONG_CLASSIFICATION  or	 SHORT_CLASSIFICATION,
       LONG_WORDS or SHORT_WORDS, VIEW_EXTERNAL or VIEW_INTERNAL, and NO_CLAS‐
       SIFICATION. A flags value 0 is equivalent  to  (SHORT_CLASSIFICATION  |
       LONG_WORDS).  The  translation  of a clearance might not be the same as
       the translation of a sensitivity label. These functions	use  different
       label_encodings file tables that might contain different words and con‐
       straints.

       The calling process must have PRIV_SYS_TRANS_LABEL in its set of effec‐
       tive  privileges	 to  perform label translation on labels that dominate
       the current process's sensitivity label.

       The generic form of an output character-coded label is:

	 CLASSIFICATION WORD1 WORD2 WORD3/WORD4 SUFFIX PREFIX WORD5/WORD6

       Capital letters are used to display all CLASSIFICATION names and WORDs.
       The  `  '  (space)  character  separates classifications and words from
       other words in all character-coded labels except where  multiple	 words
       that  require  the same PREFIX or SUFFIX are present, in which case the
       multiple words are separated from each other by the `/' (slash) charac‐
       ter.

       The string argument can point to either a pointer to pre-allocated mem‐
       ory, or the value (char *)0. If string points to a pointer to pre-allo‐
       cated  memory,  then  str_len  indicates	 the  size of that memory.  If
       string points to the value (char *)0, memory is	allocated  using  mal‐
       loc()  to contain the translated character-coded labels. The translated
       label is copied into allocated or pre-allocated memory.

       The flags argument is 0 or the logical sum of the following:

       LONG_WORDS	       Translate using long names of words defined  in
			       label.

       SHORT_WORDS	       Translate using short names of words defined in
			       label. If no  short  name  is  defined  in  the
			       label_encodings	file for a word, the long name
			       is used.

       LONG_CLASSIFICATION     Translate using	long  name  of	classification
			       defined in label.

       SHORT_CLASSIFICATION    Translate  using	 short	name of classification
			       defined in label.

       ACCESS_RELATED	       Translate only access-related  entries  defined
			       in information label label.

       VIEW_EXTERNAL	       Translate  ADMIN_LOW  and  ADMIN_HIGH labels to
			       the lowest and highest labels  defined  in  the
			       label_encodings file.

       VIEW_INTERNAL	       Translate  ADMIN_LOW  and  ADMIN_HIGH labels to
			       the admin low name and admin high name  strings
			       specified  in  the  label_encodings file. If no
			       strings are specified, the strings  "ADMIN_LOW"
			       and "ADMIN_HIGH" are used.

       NO_CLASSIFICATION       Do  not	translate  classification  defined  in
			       label.

   Process Attributes
       If the VIEW_EXTERNAL or VIEW_INTERNAL flags are not specified, transla‐
       tion 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	speci‐
       fies  that  the	ADMIN_LOW  and ADMIN_HIGH labels are translated to the
       admin low 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
       Upon successful completion,  the	 bsltos()  and	bcleartos()  functions
       return the length of the character-coded label, including the NULL ter‐
       minator.

       If the label is not of the valid defined required type, if the label is
       not dominated by the process sensitivity label and the process does not
       have PRIV_SYS_TRANS_LABEL in its set of effective privileges, or if the
       label_encodings file is inaccessible, these functions return −1.

       If memory cannot be allocated for the return string or if the pre-allo‐
       cated return string memory is insufficient to hold  the	string,	 these
       functions return 0. The value of the pre-allocated string is set to the
       NULL string (*string[0]=' 0';).

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		     │MT-Safe with exceptions	   │
       └─────────────────────────────┴─────────────────────────────┘

       The   bsltos()	and   bcleartos()  functions  are  Obsolete.  Use  the
       label_to_str(3TSOL) function instead.

SEE ALSO
       free(3C), label_to_str(3TSOL), libtsol(3LIB), malloc(3C),  label_encod‐
       ings(4), attributes(5)

NOTES
       The  functionality  described  on this manual page is available only if
       the system is configured with Trusted Extensions.

       If memory is allocated by these functions, the  caller  must  free  the
       memory with free(3C) when the memory is no longer in use.

SunOS 5.10			  20 Jul 2007			  bltos(3TSOL)
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