Sorry to bother you all with such an easy thing. I can't figure out how the
kernel knows I have a write protected tape in a drive that I open via
open("/dev/st0", O_RDWR, cf_flg, 0666)
Using the sgio interface I can only sense a write protect status after
attempting to to a write.
How can one know this before doing a write op?
Thanks in advance
Mark
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