Hello all, I would like to have variable number of stream communication channels between user-space (my userspace daemon) and kernel (my module). I prefer "file" interface because of possibility to use select(). I am considering one of the following: 1. miscdev This seems to be the easiest, but it is limited in number of devices (256 devices shared with others). 2. own char device (allocate one major) Major issue is here that it requires one major number (hard to get one reserved) or it may get allocated at module load time (register_chardev()), but then I need to recreate device files accordingly or use devfs... This is similar to Coda's psdev... Limited to 256 minor devices. 3. /proc files This one seems nice, because you can create /proc entries when you need them and with good naming scheme, userspace can just open the correct filename. There is no real limitation in the number of devices I can create (AFAIK). I am however not sure how this communication through /proc compares with character device files (option 1 or 2) - can I expect same performance as from char device? Is there any other option I can use? Regards, Luka -- 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/
