Darwin supports the use of dynamic devfs entry creation. A kext and MODULE_START time can allocate a devfs entry and name iself anything it wants. An example of this can be found in IOSerialFamily/IOSerialBSDClient.cpp Godfrey At 21:28 +0100 02-11-11, Matthias Ringwald wrote: Hi Andrew, thanks for your answer. Could somebody help me clarify things a bit more ? For writing a working /dev/... device (driver)... (e.g. a device that could echo data or just provides the current date.. ) Do I have to re-compile the kernel ? Do I need to write a kernel extension ? Do I need the darwin kernel sources to write a user land driver ? I tried "Howto Add a Character Device to Darwin". http://www.opendarwin.org/documentation/chardev.php gcc failed because of the missing header <kernel/thread.h> In this LIRC Linux project, they create a device node with mknod (doesn't work on darwin) and then create unix socket and then bind it to the /dev/lircd node. looks pretty easy... on mac os x, the bind fails 'operation not supported' (I already failed making the dev node properly) I just tried mkfifo. Looks good, but I can't make a fifo in /dev/ .. when opening the fifo I get 'device is not configured' Any ideas for this ? thanks, Matthias Ringwald On Montag, November 11, 2002, at 08:16 Uhr, Andrew Gallatin wrote: Matthias Ringwald writes: hi I found a discussion on providing /dev/.. devices by a user client on this list from nov 2001. Is it possible to write a pseudo device driver that can be used by other applications over open/read/write/ioctl POSIX calls ? I'm trying to port the lirc linux infrared control to mac os x and it uses /dev/.. devices for their communication. Sure. Using ioctls and devices is much more portable when you've got code that runs on other UNIXes. Note that MacOS X uses devfs (the older, uglier one, I think), so you should make the special files from inside the driver. Also note that unlike linux & solaris, MacOS & *BSD do not support factory devices. Drew PS: Here's working sample code ripped from my (real hardware) driver. The idea is to make several /dev/sample* devices, with different permissions based on device number. _______________________________________________ darwin-kernel mailing list | darwin-kernel@lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored. _______________________________________________ darwin-kernel mailing list | darwin-kernel@lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.