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8.1.1: Device naming with the devfs file system

The Linux kernel (since version 2.3.46) contains support for a virtual file system called devfs which serves to auto-magically create device nodes under `/dev/' as needed. If the kernel supports devfs then ftape-4.05 registers a directory `/dev/ftape/' and subdirectories `/dev/ftape/0/', `/dev/ftape/1/', `/dev/ftape/2/' and `/dev/ftape/3/'.

Using this naming scheme, `/dev/qft0' becomes `/dev/ftape/0/mt', `/dev/zqft0' becomes `/dev/ftape/0/mtz' and finally `/dev/rawft0' becomes `/dev/ftape/0/mtr'. Non rewinding devices are indicated by the suffix n instead of the prefix n, so `/dev/nzqft2' maps to `/dev/ftape/2/mtzn'.


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