The sac.h header file

   # define IDLEN          4       /* length in bytes of a utmp id */
   # define SC_WILDC       0xff    /* wild character for utmp ids */
   # define PMTAGSIZE      14      /* maximum length in bytes for a port monitor tag */
   

   /*
    * values for rflag in doconfig()
    */
   

   # define NOASSIGN       0x1     /* don't allow assign operations */
   # define NORUN          0x2     /* don't allow run or runwait operations */
   

   

   /*
    * message to SAC (header only).  This header is forever fixed.  The
    * size field (pm_size) defines the size of the data portion of the
    * message, which follows the header.  The form of this optional
    * data portion is defined strictly by the message type (pm_type).
    */
   

   struct  pmmsg {

           char       pm_type;                /* type of message */
           unchar    pm_state;                /* current state of port monitor */
           char       pm_maxclass;            /* max message class this
                                                 port monitor understands */
           char       pm_tag[PMTAGSIZE + 1];  /* port monitor's tag */
           int        pm_size;                /* size of optional data portion */
   };
   

   

   

   /*
    * pm_type values
    */
   

   # define PM_STATUS      1               /* status response */
   # define PM_UNKNOWN     2               /* an unknown message was received */
   

   /*
    * pm_state values
    */
   

   /*
    * Class 1 responses
    */
   

   # define PM_STARTING    1               /* port monitor in starting state */
   # define PM_ENABLED     2               /* port monitor in enabled state */
   # define PM_DISABLED    3               /* port monitor in disabled state */
   # define PM_STOPPING    4               /* port monitor in stopping state */
   

   /*
    * message to port monitor
    */
   

   struct  sacmsg {

           int     sc_size;                /* size of optional data portion */
           char    sc_type;                /* type of message */
   };
   

   

   

   /*
    * sc_type values
    * These represent commands that the SAC sends to a port monitor.  These
    * commands are divided into "classes" for extensibility.  Each subsequent
    * "class" is a superset of the previous "classes" plus the new commands
    * defined within that "class".  The header for all commands is identical;
    * however, a command may be defined such that an optional data portion may
    * be sent in addition to the header.  The format of this optional data piece
    * is self-defining based on the command.  Important note:  the first message
    * sent by the SAC will always be a class 1 message.  The port monitor
    * response will indicate the maximum class that it is able to understand.
    * Another note is that port monitors should only respond to a message with
    * an equivalent class response (i.e., a class 1 command causes a class 1
    * response).
    */
   

   /*
    * Class 1 commands (currently, there are only class 1 commands)
    */
   

   # define SC_STATUS      1               /* status request */
   # define SC_ENABLE      2               /* enable request */
   # define SC_DISABLE     3               /* disable request */
   # define SC_READDB      4               /* read pmtab request */
   

   /*
    * `errno' values for Saferrno, note that Saferrno is used by
    * both pmadm and sacadm and these values are shared between
    * them
    */
   

   # define E_BADARGS      1       /* bad args or ill-formed command line */
   # define E_NOPRIV       2       /* user not privileged for operation */
   # define E_SAFERR       3       /* generic SAF error */
   # define E_SYSERR       4       /* system error */
   # define E_NOEXIST      5       /* invalid specification */
   # define E_DUP          6       /* entry already exists */
   # define E_PMRUN        7       /* port monitor is running */
   # define E_PMNOTRUN     8       /* port monitor is not running */
   # define E_RECOVER      9       /* in recovery */
   # define E_NOCONTACT    10      /* _pmtab updated, but notification failure */