The OpenNET Project / Index page

[ новости /+++ | форум | wiki | теги | ]

Интерактивная система просмотра системных руководств (man-ов)

 ТемаНаборКатегория 
 
 [Cписок руководств | Печать]

getnetbyname (3)
  • getnetbyname (3) ( Solaris man: Библиотечные вызовы )
  • getnetbyname (3) ( FreeBSD man: Библиотечные вызовы )
  • getnetbyname (3) ( Русские man: Библиотечные вызовы )
  • >> getnetbyname (3) ( Linux man: Библиотечные вызовы )
  • getnetbyname (3) ( POSIX man: Библиотечные вызовы )
  •  

    NAME

    getnetent, getnetbyname, getnetbyaddr, setnetent, endnetent -
    get network entry
     
    

    SYNOPSIS

    #include <netdb.h>
    
    struct netent *getnetent(void);
    
    struct netent *getnetbyname(const char *name);
    
    struct netent *getnetbyaddr(uint32_t net, int type);
    
    void setnetent(int stayopen);
    
    void endnetent(void);
    
     

    DESCRIPTION

    The getnetent() function reads the next entry from the networks database and returns a netent structure containing the broken-out fields from the entry. A connection is opened to the database if necessary.

    The getnetbyname() function returns a netent structure for the entry from the database that matches the network name.

    The getnetbyaddr() function returns a netent structure for the entry from the database that matches the network number net of type type. The net argument must be in host byte order.

    The setnetent() function opens a connection to the database, and sets the next entry to the first entry. If stayopen is non-zero, then the connection to the database will not be closed between calls to one of the getnet*() functions.

    The endnetent() function closes the connection to the database.

    The netent structure is defined in <netdb.h> as follows:

    struct netent {
        char      *n_name;     /* official network name */
        char     **n_aliases;  /* alias list */
        int        n_addrtype; /* net address type */
        uint32_t   n_net;      /* network number */
    }
    

    The members of the netent structure are:

    n_name
    The official name of the network.
    n_aliases
    A NULL-terminated list of alternative names for the network.
    n_addrtype
    The type of the network number; always AF_INET.
    n_net
    The network number in host byte order.
     

    RETURN VALUE

    The getnetent(), getnetbyname() and getnetbyaddr() functions return a pointer to a statically allocated netent structure, or a NULL pointer if an error occurs or the end of the file is reached.  

    FILES

    /etc/networks
    networks database file
     

    CONFORMING TO

    4.3BSD, POSIX.1-2001.  

    NOTES

    In glibc versions before 2.2, the net argument of getnetbyaddr() was of type long.  

    SEE ALSO

    getnetent_r(3), getprotoent(3), getservent(3)
    RFC 1101  

    COLOPHON

    This page is part of release 3.14 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    RETURN VALUE
    FILES
    CONFORMING TO
    NOTES
    SEE ALSO
    COLOPHON


    Поиск по тексту MAN-ов: 




    Спонсоры:
    Inferno Solutions
    Hosting by Hoster.ru
    Хостинг:

    Закладки на сайте
    Проследить за страницей
    Created 1996-2021 by Maxim Chirkov
    Добавить, Поддержать, Вебмастеру