The OpenNET Project / Index page

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

Интерактивная система просмотра системных руководств (man-ов)

 ТемаНаборКатегория 
 
 [Cписок руководств | Печать]

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

  • BSD mandoc
     

    NAME

    
    
    getttyent
    
     
    getttynam
    
     
    setttyent
    
     
    endttyent
    
     
    isdialuptty
    
     
    isnettty
    
     - ttys(5)
    
    
    
    file routines
     
    

    LIBRARY

    Lb libc
    
     
    

    SYNOPSIS

       #include <ttyent.h>
    struct ttyent * getttyent (void);
    struct ttyent * getttynam (const char *name);
    int setttyent (void);
    int endttyent (void);
    int isdialuptty (const char *name);
    int isnettty (const char *name);
     

    DESCRIPTION

    The getttyent (,);
    and getttynam ();
    functions each return a pointer to an object, with the following structure, containing the broken-out fields of a line from the tty description file.
    struct ttyent {
            char    *ty_name;       /* terminal device name */
            char    *ty_getty;      /* command to execute, usually getty */
            char    *ty_type;       /* terminal type for termcap */
    #define TTY_ON          0x01    /* enable logins (start ty_getty program) */
    #define TTY_SECURE      0x02    /* allow uid of 0 to login */
    #define TTY_DIALUP      0x04    /* is a dialup tty */
    #define TTY_NETWORK     0x08    /* is a network tty */
            int     ty_status;      /* status flags */
            char    *ty_window;     /* command to start up window manager */
            char    *ty_comment;    /* comment field */
            char    *ty_group;      /* tty group name */
    };
    

    The fields are as follows:

    Fa ty_name
    The name of the character-special file.
    Fa ty_getty
    The name of the command invoked by init(8) to initialize tty line characteristics.
    Fa ty_type
    The name of the default terminal type connected to this tty line.
    Fa ty_status
    A mask of bit fields which indicate various actions allowed on this tty line. The possible flags are as follows:

    TTY_ON
    Enables logins (i.e., init(8) will start the command referenced by Fa ty_getty on this entry).
    TTY_SECURE
    Allow users with a uid of 0 to login on this terminal.
    TTY_DIALUP
    Identifies a tty as a dialin line. If this flag is set, then isdialuptty ();
    will return a non-zero value.
    TTY_NETWORK
    Identifies a tty used for network connections. If this flag is set, then isnettty ();
    will return a non-zero value.

    Fa ty_window
    The command to execute for a window system associated with the line.
    Fa ty_group
    A group name to which the tty belongs. If no group is specified in the ttys description file, then the tty is placed in an anonymous group called "none".
    Fa ty_comment
    Any trailing comment field, with any leading hash marks (``#'') or whitespace removed.

    If any of the fields pointing to character strings are unspecified, they are returned as null pointers. The field Fa ty_status will be zero if no flag values are specified.

    See ttys(5) for a more complete discussion of the meaning and usage of the fields.

    The getttyent ();
    function reads the next line from the ttys file, opening the file if necessary. The setttyent ();
    function rewinds the file if open, or opens the file if it is unopened. The endttyent ();
    function closes any open files.

    The getttynam ();
    function searches from the beginning of the file until a matching Fa name is found (or until EOF is encountered).  

    RETURN VALUES

    The routines getttyent ();
    and getttynam ();
    return a null pointer on EOF or error. The setttyent ();
    function and endttyent ();
    return 0 on failure and 1 on success.

    The routines isdialuptty ();
    and isnettty ();
    return non-zero if the dialup or network flag is set for the tty entry relating to the tty named by the argument, and zero otherwise.  

    FILES

    /etc/ttys

     

    SEE ALSO

    login(1), ttyslot(3), gettytab(5), termcap(5), ttys(5), getty(8), init(8)  

    HISTORY

    The getttyent (,);
    getttynam (,);
    setttyent (,);
    and endttyent ();
    functions appeared in BSD 4.3  

    BUGS

    These functions use static data storage; if the data is needed for future use, it should be copied before any subsequent calls overwrite it.


     

    Index

    NAME
    LIBRARY
    SYNOPSIS
    DESCRIPTION
    RETURN VALUES
    FILES
    SEE ALSO
    HISTORY
    BUGS


    Поиск по тексту MAN-ов: 




    Спонсоры:
    Inferno Solutions
    Hosting by Hoster.ru
    Хостинг:

    Закладки на сайте
    Проследить за страницей
    Created 1996-2020 by Maxim Chirkov
    Добавить, Поддержать, Вебмастеру