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Интерактивная система просмотра системных руководств (man-ов)

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

  • BSD mandoc
     

    NAME

    
    
    tcsendbreak
    
     
    tcdrain
    
     
    tcflush
    
     
    tcflow
    
     - line control functions
    
     
    

    LIBRARY

    Lb libc
    
     
    

    SYNOPSIS

       #include <termios.h>
    int tcdrain (int fd);
    int tcflow (int fd int action);
    int tcflush (int fd int action);
    int tcsendbreak (int fd int len);
     

    DESCRIPTION

    The tcdrain ();
    function waits until all output written to the terminal referenced by Fa fd has been transmitted to the terminal.

    The tcflow ();
    function suspends transmission of data to or the reception of data from the terminal referenced by Fa fd depending on the value of Fa action . The value of Fa action must be one of the following:

    Fa TCOOFF
    Suspend output.
    Fa TCOON
    Restart suspended output.
    Fa TCIOFF
    Transmit a STOP character, which is intended to cause the terminal to stop transmitting data to the system. (See the description of IXOFF in the `Input' Modes section of termios(4)).
    Fa TCION
    Transmit a START character, which is intended to cause the terminal to start transmitting data to the system. (See the description of IXOFF in the `Input' Modes section of termios(4)).

    The tcflush ();
    function discards any data written to the terminal referenced by Fa fd which has not been transmitted to the terminal, or any data received from the terminal but not yet read, depending on the value of Fa action . The value of Fa action must be one of the following:

    Fa TCIFLUSH
    Flush data received but not read.
    Fa TCOFLUSH
    Flush data written but not transmitted.
    Fa TCIOFLUSH
    Flush both data received but not read and data written but not transmitted.

    The tcsendbreak ();
    function transmits a continuous stream of zero-valued bits for four-tenths of a second to the terminal referenced by Fa fd . The Fa len argument is ignored in this implementation.  

    RETURN VALUES

    Upon successful completion, all of these functions return a value of zero.  

    ERRORS

    If any error occurs, a value of -1 is returned and the global variable errno is set to indicate the error, as follows:

    Bq Er EBADF
    The Fa fd argument is not a valid file descriptor.
    Bq Er EINVAL
    The Fa action argument is not a proper value.
    Bq Er ENOTTY
    The file associated with Fa fd is not a terminal.
    Bq Er EINTR
    A signal interrupted the tcdrain ();
    function.

     

    SEE ALSO

    tcsetattr(3), termios(4)  

    STANDARDS

    The tcsendbreak (,);
    tcdrain (,);
    tcflush ();
    and tcflow ();
    functions are expected to be compliant with the St -p1003.1-88 specification.


     

    Index

    NAME
    LIBRARY
    SYNOPSIS
    DESCRIPTION
    RETURN VALUES
    ERRORS
    SEE ALSO
    STANDARDS


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