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>Device and Class Specific Functions [POSIX Section 7]</TITLE
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>Chapter 31. POSIX Standard Support</TD
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NAME="POSIX-DEVICE-AND-CLASS-SPECIFIC-FUNCTIONS">Device and Class Specific Functions &#0091;POSIX Section 7&#0093;</H1
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NAME="AEN13079">Functions Implemented</H2
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>speed&#0095;t cfgetospeed( const struct termios &#0042;termios&#0095;p );
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int cfsetospeed( struct termios &#0042;termios&#0095;p, speed&#0095;t speed );
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speed&#0095;t cfgetispeed( const struct termios &#0042;termios&#0095;p );
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int cfsetispeed( struct termios &#0042;termios&#0095;p, speed&#0095;t speed );
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int tcgetattr( int fd, struct termios &#0042;termios&#0095;p );
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int tcsetattr( int fd, int optional&#0095;actions,
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               const struct termios &#0042;termios&#0095;p );
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int tcsendbreak( int fd, int duration );
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int tcdrain( int fd );
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int tcflush( int fd, int queue&#0095;selector );
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int tcsendbreak( int fd, int action );</PRE
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>pid&#0095;t tcgetpgrp( int fd );
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int tcsetpgrp( int fd, pid&#0095;t pgrp );</PRE
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>           Only the functionality relevant to basic serial device
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            control is implemented. Only very limited support for
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            canonical input is provided, and then only via the
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            &#8220;tty&#8221; devices, not the &#8220;serial&#8221;
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            devices. None of the functionality relevant to job
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            control, controlling terminals and sessions is
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>           Hardware flow control is supported if the underlying
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            device driver and serial port support it.
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>           Support for break, framing and parity errors depends on
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            the functionality of the hardware and device driver.
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