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getnetpath (3)
  • getnetpath (3) ( Solaris man: Библиотечные вызовы )
  • >> getnetpath (3) ( FreeBSD man: Библиотечные вызовы )

  • BSD mandoc
     

    NAME

    
    
    getnetpath
    
     
    setnetpath
    
     
    endnetpath
    
     - get
    
    /etc/netconfig
    
    entry corresponding to
    NETPATH
    
    component
     
    

    LIBRARY

    Lb libc
    
     
    

    SYNOPSIS

       #include <netconfig.h>
    struct netconfig * getnetpath (void *handlep);
    void * setnetpath (void);
    int endnetpath (void *handlep);
     

    DESCRIPTION

    The routines described in this page provide the application access to the system network configuration database, /etc/netconfig as it is ``filtered'' by the NETPATH environment variable (see environ(7)). See getnetconfig(3) for other routines that also access the network configuration database directly. The NETPATH variable is a list of colon-separated network identifiers.

    The getnetpath ();
    function returns a pointer to the netconfig database entry corresponding to the first valid NETPATH component. The netconfig entry is formatted as a struct netconfig . On each subsequent call, getnetpath ();
    returns a pointer to the netconfig entry that corresponds to the next valid NETPATH component. The getnetpath ();
    function can thus be used to search the netconfig database for all networks included in the NETPATH variable. When NETPATH has been exhausted, getnetpath ();
    returns NULL

    A call to setnetpath ();
    ``binds'' to or ``rewinds'' NETPATH The setnetpath ();
    function must be called before the first call to getnetpath ();
    and may be called at any other time. It returns a handle that is used by getnetpath (.);

    The getnetpath ();
    function silently ignores invalid NETPATH components. A NETPATH component is invalid if there is no corresponding entry in the netconfig database.

    If the NETPATH variable is unset, getnetpath ();
    behaves as if NETPATH were set to the sequence of ``default'' or ``visible'' networks in the netconfig database, in the order in which they are listed.

    The endnetpath ();
    function may be called to ``unbind'' from NETPATH when processing is complete, releasing resources for reuse. Programmers should be aware, however, that endnetpath ();
    frees all memory allocated by getnetpath ();
    for the struct netconfig data structure.  

    RETURN VALUES

    The setnetpath ();
    function returns a handle that is used by getnetpath (.);
    In case of an error, setnetpath ();
    returns NULL

    The endnetpath ();
    function returns 0 on success and -1 on failure (for example, if setnetpath ();
    was not called previously). The nc_perror ();
    or nc_sperror ();
    function can be used to print out the reason for failure. See getnetconfig(3).

    When first called, getnetpath ();
    returns a pointer to the netconfig database entry corresponding to the first valid NETPATH component. When NETPATH has been exhausted, getnetpath ();
    returns NULL  

    SEE ALSO

    getnetconfig(3), netconfig(5), environ(7)


     

    Index

    NAME
    LIBRARY
    SYNOPSIS
    DESCRIPTION
    RETURN VALUES
    SEE ALSO


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