Messages in this thread |  | | Date | Tue, 15 May 2001 13:30:29 -0700 | From | "H. Peter Anvin" <> | Subject | Re: LANANA: To Pending Device Number Registrants |
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Alexander Viro wrote: > > On Tue, 15 May 2001, James Simmons wrote: > > > > only one _device_node_, you can have multiple fd's. In fact, you can, with > > > the Linux VFS layer, fairly easily do things like > > > > > > mknod /dev/fd0 c X Y > > > > > > and then use > > > > > > fd = open("/dev/fd0/colourspace", O_RDWR); > > > > Yipes!! I have to say UNIX has a tendency to teach you ioctl is the only > > way. I have never thought outside of the box nor see anyone else in this > > manner. This is absolutely brillant!!! I can see alot of possibilties with > > this. > > The thing being, why thet hell create these device/directory hybrids? >
Permission management. The permissions on the subnodes are inherited from the main node, which is stored on a persistent medium.
-hpa
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