HI, >-----Original Message----- >From: raja [mailto:vnagaraju@xxxxxxxxxxxx] >Sent: Saturday, September 17, 2005 10:36 AM >To: kernelnewbies@xxxxxxxxxxxx >Subject: major and minor numbers > >Hi, > Will you please tell me > what exactly major and minor numbers mean in device drivers. >I am studying the Linux Device Drivers book by rubini.I can not A Major number tells about the driver associated with a device. Multiple devices may be controlled by same driver and so they all will have the same Major number. While the devices itself are identified by the Minor number. For e.g. if you do ls -l /dev/tty[01] crw-rw---- 1 root tty 4, 0 Sep 16 14:14 /dev/tty0 crw-rw---- 1 root tty 4, 1 Sep 16 14:15 /dev/tty1 here the major number for both tty0 and tty1 is 4 while their minor numbers are 0 and 1 respectively. here the Sanjay >understand wht exactly they are ? > > > > >-- >Kernelnewbies: Help each other learn about the Linux kernel. >Archive: http://mail.nl.linux.org/kernelnewbies/ >FAQ: http://kernelnewbies.org/faq/ -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
