On Wed, 6 Nov 2013 10:06:23 +0800, David Crayford wrote: >On 6/11/2013 8:31 AM, Jon Perryman wrote: > >> ... standard security on z/OS is provided by a single programming interface >> regardless of the ESM you are using. > >It's a shame to same can't be said of the file system. In Unix >everything is a file and shares the same API. I use the same interface >for files, sockets, printers, terminals, modems or any other device. >I wish OS/360 had a similar unifying design principle back in the day. > I believe OS/360 started out with the right idea: all I/O was done via DCBs. But as capabilities were extended, the designers elected to develop alternatives rather than broadening existing interfaces. E.g. TSO's terminal I/O's spurning DCBs.
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