Mike Vannorsdel wrote: You'll have to use the VFS functions (vn_open, vn_rdwr, vn_close, ect). This also requires a good grasp on vnodes, vnode reference counting, and vnode locking. You'll find doing file I/O from within the kernel is very different, and more difficult, than from userland. Your best bet is to find a book or online tutorials on using VFS. Just a word of warning... Even though VN ops function will work, Apple is discouraging such an endeavour, since it will rely on the kernel exporting these specific symbols. As far as I know (someone from Apple might want to correct me if I'm wrong) relying on kernel symbols presence at kext link is a no-no. Plus, if I remember it correctly, to make it work a funnel change must be done; plus a possible break of synchronization. Having said that, the specific kernel symbols we are talking about have 99.9% chance/risk of not being removed/changed... so it's your choice. George. On Nov 13, 2003, at 12:34 PM, Matt Jaffa wrote: In a Kernel Extension, I am trying to do file reading and writing, how do i go about this, I included fstream but I dont think that this is supported. Any suggestions? _______________________________________________ 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.