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  85 NAME="POSIX-DEVICE-AND-CLASS-SPECIFIC-FUNCTIONS">Device and Class Specific Functions &#0091;POSIX Section 7&#0093;</H1
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  88 ><H2
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  90 ><A
  91 NAME="AEN13079">Functions Implemented</H2
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 100 >speed&#0095;t cfgetospeed( const struct termios &#0042;termios&#0095;p );
 101 int cfsetospeed( struct termios &#0042;termios&#0095;p, speed&#0095;t speed );
 102 speed&#0095;t cfgetispeed( const struct termios &#0042;termios&#0095;p );
 103 int cfsetispeed( struct termios &#0042;termios&#0095;p, speed&#0095;t speed );
 104 int tcgetattr( int fd, struct termios &#0042;termios&#0095;p );
 105 int tcsetattr( int fd, int optional&#0095;actions,
 106                const struct termios &#0042;termios&#0095;p );
 107 int tcsendbreak( int fd, int duration );
 108 int tcdrain( int fd );
 109 int tcflush( int fd, int queue&#0095;selector );
 110 int tcsendbreak( int fd, int action );</PRE
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 119 ><A
 120 NAME="AEN13082">Functions Omitted</H2
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 129 >pid&#0095;t tcgetpgrp( int fd );
 130 int tcsetpgrp( int fd, pid&#0095;t pgrp );</PRE
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 144 ><LI
 145 ><P
 146 >           Only the functionality relevant to basic serial device
 147             control is implemented. Only very limited support for
 148             canonical input is provided, and then only via the
 149             &#8220;tty&#8221; devices, not the &#8220;serial&#8221;
 150             devices. None of the functionality relevant to job
 151             control, controlling terminals and sessions is
 152             implemented.
 153             </P
 154 ></LI
 155 ><LI
 156 ><P
 157 >           Only <SPAN
 158 CLASS="emphasis"
 159 ><I
 160 CLASS="EMPHASIS"
 161 >MIN</I
 162 ></SPAN
 163 > &#0061; 0 and
 164             <SPAN
 165 CLASS="emphasis"
 166 ><I
 167 CLASS="EMPHASIS"
 168 >TIME</I
 169 ></SPAN
 170 > &#0061; 0 functionality is
 171             provided.
 172             </P
 173 ></LI
 174 ><LI
 175 ><P
 176 >           Hardware flow control is supported if the underlying
 177             device driver and serial port support it.
 178             </P
 179 ></LI
 180 ><LI
 181 ><P
 182 >           Support for break, framing and parity errors depends on
 183             the functionality of the hardware and device driver.
 184             </P
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