Manual Pages for UNIX Operating System command usage for man priv_getbyname

Standard C Library Functions                  priv_str_to_set(3C)



NAME
     priv_str_to_set,      priv_set_to_str,       priv_getbyname,
     priv_getbynum,      priv_getsetbyname,     priv_getsetbynum,
     priv_gettext - privilege name functions

SYNOPSIS
     #include 

     priv_set_t *priv_str_to_set(const char *buf, const char *sep,
          const char **endptr);


     char *priv_set_to_str(const priv_set_t *set, char sep, int flag);


     int priv_getbyname(const char *privname);


     const char *priv_getbynum(int privnum);


     int priv_getsetbyname(const char *privsetname);


     const char *priv_getsetbynum(int privname);


     char *priv_gettext(const char *privname);


DESCRIPTION
     The priv_str_to_set() function maps the privilege specifica-
     tion  in  buf to a privilege set. It returns a privilege set
     on success or NULL on failure. If an error occurs when pars-
     ing  the string, a pointer to the remainder of the string is
     stored in the object pointed to  by  endptr,  provided  that
     endptr  is not a null pointer. If an error occurs when allo-
     cating memory, errno is set and the  object  pointed  to  by
     endptr  is  set to the null pointer, provided that endptr is
     not a null pointer.


     The application is  responsible  for  freeing  the  returned
     privilege set using priv_freeset(3C).


     A  privilege  specification  should  contain  one  or   more
     privilege  names,  separated  by characters in sep using the
     same algorithm as strtok(3C). Privileges can  optionally  be
     preceded  by a dash (-) or an exclamation mark (!), in which
     case they are excluded from the resulting set.  The  special
     strings  "none"  for the empty set, "all" for the set of all



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Standard C Library Functions                  priv_str_to_set(3C)



     privileges, "zone" for the set of all  privileges  available
     within  the  caller's zone, and "basic" for the set of basic
     privileges  are  also  recognized.  Set  specifications  are
     interpreted from left to right.


     The priv_set_to_str() function converts the privilege set to
     a  sequence  of privileges separated by sep, returning the a
     pointer to the dynamically allocated result. The application
     is responsible for freeing the memory using free(3C).


     To  maintain  future  compatibility,  the  "basic"  set   of
     privileges  is included as "basic,!missing_basic_priv1,...".
     When further currently unprivileged  operations  migrate  to
     the  basic  privilege set, the conversion back of the result
     with  priv_str_to_set()  includes   the   additional   basic
     privileges,  guaranteeing  that  the resulting privilege set
     carries the same privileges. This behavior  is  the  default
     and   is   equivalent  to  specifying  a  flag  argument  of
     PRIV_STR_PORT.  When   specifying   a   flag   argument   of
     PRIV_STR_LIT,  the  result  does  not treat basic privileges
     differently and the privileges  present  are  all  literally
     presented  in  the output. A flag argument of PRIV_STR_SHORT
     attempts to arrive at the shortest output, using the  tokens
     "basic",  "zone", "all", and negated privileges. This output
     is most useful for trace output.


     The priv_getbyname() and priv_getsetbyname()  functions  map
     privilege  names  and  privilege  set  names to numbers. The
     numbers returned are valid for the current  kernel  instance
     only  and  could change at the next boot. Only the privilege
     names should be committed to persistent storage. The numbers
     should  not  be  committed to persistent storage. Both func-
     tions return -1 on error, setting errno to EINVAL.


     The priv_getbynum()  and  priv_getsetbynum()  functions  map
     privileges  numbers  to names. The strings returned point to
     shared storage that should not be modified and is valid  for
     the  lifetime  of the process. Both functions return NULL on
     error, setting errno to EINVAL.


     The priv_gettext() function returns a pointer  to  a  string
     consisting  of  one  or more newline-separated lines of text
     describing  the  privilege.  The  text  is  localized  using
     {LC_MESSAGES}. The application is responsibe for freeing the
     memory returned.





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Standard C Library Functions                  priv_str_to_set(3C)



     These functions pick  up  privileges  allocated  during  the
     lifetime of the process using priv_getbyname(9F) by refresh-
     ing the internal data structures when necessary.

RETURN VALUES
     Upon   successful    completion,    priv_str_to_set()    and
     priv_set_to_str()  return  a  non-null  pointer to allocated
     memory that should be freed by  the  application  using  the
     appropriate functions when it is no longer referenced.


     The priv_getbynum() and priv_getsetbynum() functions  return
     non-null  pointers  to  constant  memory  that should not be
     modified or freed by the  application.  Otherwise,  NULL  is
     returned and errno is set to indicate the error.


     Upon    successful    completion,    priv_getbyname()    and
     priv_getsetbyname()  return  a  non-negative integer. Other-
     wise, -1 is returned and errno is set to indicate the error.


     Upon successful completion, priv_gettext()  returns  a  non-
     null  value.  It  returns  NULL  if  an  error  occurs or no
     descriptive text for the specified privilege can be found.

ERRORS
     The priv_str_to_set() and priv_set_to_str()  functions  will
     fail if:

     ENOMEM    The physical limits of the system are exceeded  by
               the  memory  allocation needed to hold a privilege
               set.


     EAGAIN    There is not enough memory available  to  allocate
               sufficient memory to hold a privilege set, but the
               application could try again later.



     All of these functions will fail if:

     EINVAL    One or more of the arguments is invalid.


EXAMPLES
     Example 1 List all the sets and privileges  defined  in  the
     system.






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Standard C Library Functions                  priv_str_to_set(3C)



     The following example lists  all  the  sets  and  privileges
     defined in the system.


       #include 
       #include 

       /* list all the sets and privileges defined in the system */

       const char *name;
       int i;

       printf("Each process has the following privilege sets:\n");
       for (i = 0; (name = priv_getsetbynum(i++)) != NULL; )
               printf("\t%s\n", name);

       printf("Each set can contain the following privileges:\n");
       for (i = 0; (name = priv_getbynum(i++)) != NULL; )
               printf("\t%s\n", name);


ATTRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:



     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Interface Stability         | Committed                   |
    |_____________________________|_____________________________|
    | MT-Level                    | MT-Safe                     |
    |_____________________________|_____________________________|


SEE ALSO
     free(3C),   priv_set(3C),   attributes(5),    privileges(5),
     priv_getbyname(9F)
















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