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Интерактивная система просмотра системных руководств (man-ов)

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

    NAME

    tcflush - flush non-transmitted output data, non-read input data or both
     
    

    SYNOPSIS

    #include <termios.h>
    
    int tcflush(int fildes, int queue_selector);
    

     

    DESCRIPTION

    Upon successful completion, tcflush() discards data written to the object referred to by fildes (an open file descriptor associated with a terminal) but not transmitted, or data received but not read, depending on the value of queue_selector:

    o If queue_selector is TCIFLUSH it flushes data received but not read.
    o If queue_selector is TCOFLUSH it flushes data written but not transmitted.
    o If queue_selector is TCIOFLUSH it flushes both data received but not read and data written but not transmitted.

    Attempts to use tcflush() from a process which is a member of a background process group on a fildes associated with its controlling terminal, will cause the process group to be sent a SIGTTOU signal. If the calling process is blocking or ignoring SIGTTOU signals, the process is allowed to perform the operation, and no signal is sent.  

    RETURN VALUES

    Upon successful completion, 0 is returned. Otherwise, -1 is returned and errno is set to indicate the error.  

    ERRORS

    The tcflush() function will fail if:

    EBADF

    The fildes argument is not a valid file descriptor.

    EINVAL

    The queue_selector argument is not a supported value.

    ENOTTY

    The file associated with fildes is not a terminal.

    The tcflush() function may fail if:

    EIO

    The process group of the writing process is orphaned, and the writing process is not ignoring or blocking SIGTTOU.

     

    ATTRIBUTES

    See attributes(5) for descriptions of the following attributes:

    ATTRIBUTE TYPEATTRIBUTE VALUE

    Interface StabilityStandard

    MT-Level

     

    SEE ALSO

    tcdrain(3C), attributes(5), standards(5), termio(7I)


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    RETURN VALUES
    ERRORS
    ATTRIBUTES
    SEE ALSO


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