getrpcbynumber(3)                                     getrpcbynumber(3)

  getrpcent()

  NAME

    getrpcent(), getrpcbyname(), getrpcbynumber() - get RPC entry

  SYNOPSIS

    #include 

    struct rpcent *getrpcent(void)
    struct rpcent *getrpcbyname(char *name)
    struct rpcent *getrpcbynumber(int number)
    setrpcent (int stayopen)
    endrpcent (void)

  DESCRIPTION

    getrpcent(3), getrpcbyname(3), and getrpcbynumber(3) each return a pointer
    to an object with the following structure containing the broken-out fields
    of a line in the rpc program number data base, /etc/rpc.

    struct    rpcent {
         char *r_name;  /* name of server for this rpc program */
         char **r_aliases;   /* alias list */
         long r_number; /* rpc program number */
    };

    The members of this structure are:

    r_name
        The name of the server for this rpc program.

    r_aliases
        A zero terminated list of alternate names for the rpc program.

    r_number
        The rpc program number for this service.

    getrpcent(3) reads the next line of the file, opening the file if
    necessary.

    setrpcent(3) opens and rewinds the file. If the stayopen flag is non-zero,
    the net data base will not be closed after each call to getrpcent(3)
    (either directly, or indirectly through one of the other getrpc calls).

    endrpcent(3) closes the file.

    getrpcbyname(3) and getrpcbynumber(3) sequentially search from the
    beginning of the file until a matching rpc program name or program number
    is found, or until end-of-file is encountered.

  RETURN VALUES

    A NULL pointer is returned on EOF or error.

  BUGS

    All information is contained in a static area so it must be copied if it
    is to be saved.

  FILES

    /etc/rpc

  SEE ALSO

    rpc(5)

    rpcinfo(1)

  USAGE NOTES

    None of these functions are thread safe.

    None of these functions are async-signal safe.