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eui64_ntohost (3)
  • >> eui64_ntohost (3) ( FreeBSD man: Библиотечные вызовы )

  • BSD mandoc
     

    NAME

    
    
    eui64
    
     
    
    eui64_aton
    
     
    eui64_ntoa
    
     
    eui64_ntohost
    
     
    eui64_hostton
    
     - IEEE EUI-64 conversion and lookup routines
    
     
    

    LIBRARY

    Lb libc
    
     
    

    SYNOPSIS

       #include <sys/types.h>
       #include <sys/eui64.h>
    int eui64_aton (const char *a struct eui64 *e);
    int eui64_ntoa (const struct eui64 *id char *a size_t len);
    int eui64_ntohost (char *hostname size_t len const struct eui64 *id);
    int eui64_hostton (const char *hostname struct eui64 *id);
     

    DESCRIPTION

    These functions operate on IEEE EUI-64s using an Vt eui64 structure, which is defined in the header file In sys/eui64.h :
    /*
     * The number of bytes in an EUI-64.
     */
    #define EUI64_LEN               8
    
    /*
     * Structure of an IEEE EUI-64.
     */
    struct  eui64 {
            u_char octet[EUI64_LEN];
    };
    

    The eui64_aton ();
    function converts an ASCII representation of an EUI-64 into an Vt eui64 structure. Likewise, eui64_ntoa ();
    converts an EUI-64 specified as an Vt eui64 structure into an ASCII string.

    The eui64_ntohost ();
    and eui64_hostton ();
    functions map EUI-64s to their corresponding hostnames as specified in the /etc/eui64 database. The eui64_ntohost ();
    function converts from EUI-64 to hostname, and eui64_hostton ();
    converts from hostname to EUI-64.  

    RETURN VALUES

    On success, eui64_ntoa ();
    returns a pointer to a string containing an ASCII representation of an EUI-64. If it is unable to convert the supplied Vt eui64 structure, it returns a NULL pointer. Likewise, eui64_aton ();
    returns a pointer to an Vt eui64 structure on success and a NULL pointer on failure.

    The eui64_ntohost ();
    and eui64_hostton ();
    functions both return zero on success or non-zero if they were unable to find a match in the /etc/eui64 database.  

    NOTES

    The user must insure that the hostname strings passed to the eui64_ntohost ();
    and eui64_hostton ();
    functions are large enough to contain the returned hostnames.  

    NIS INTERACTION

    If the /etc/eui64 contains a line with a single `+' in it, the eui64_ntohost ();
    and eui64_hostton ();
    functions will attempt to consult the NIS eui64.byname and eui64.byid maps in addition to the data in the /etc/eui64 file.  

    SEE ALSO

    firewire(4), eui64(5), yp(8)  

    HISTORY

    These functions first appears in Fx 5.3 . They are derived from the ethers(3) family of functions.  

    BUGS

    The eui64_aton ();
    and eui64_ntoa ();
    functions returns values that are stored in static memory areas which may be overwritten the next time they are called.


     

    Index

    NAME
    LIBRARY
    SYNOPSIS
    DESCRIPTION
    RETURN VALUES
    NOTES
    NIS INTERACTION
    SEE ALSO
    HISTORY
    BUGS


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