On Mon, Sep 17, 2001 at 04:02:09PM +0530, rmasoodu@in.ibm.com wrote: > where is the implementation of the system call tcsetattr( )/tcgetattr ( > ). What i mean where does it gets mapped to in the kernel code ????? tcsetattr() and tcgetattr() are *userland* functions that wrap around a couple of ioctls. My guess is the kernel uses rs_set_termios() and rs_ioctl(), but check the source of glibc to find out what exactly gets called. > Also I am loookig for implementing RTS /CTS flow control in the serial > driver . > But i am not able to find any sample implementation in the > usr/src/linux/drivers/char ........ You mean something like change_speed(), rs_throttle(), or rs_set_termios() in serial.c? Grep is your friend... Erik -- J.A.K. (Erik) Mouw, Information and Communication Theory Group, Department of Electrical Engineering, Faculty of Information Technology and Systems, Delft University of Technology, PO BOX 5031, 2600 GA Delft, The Netherlands Phone: +31-15-2783635 Fax: +31-15-2781843 Email: J.A.K.Mouw@its.tudelft.nl WWW: http://www-ict.its.tudelft.nl/~erik/ - Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ IRC Channel: irc.openprojects.net / #kernelnewbies Web Page: http://www.kernelnewbies.org/
