PCIOCGETCONF/PCIOCREAD requires write permission?

[Lyndon Nerenberg]

[Observed on 4.2-STABLE, but I've redirected replies to the hackers list.]

'pciconf -l' is documented to work for non-priv users, however the
first thing the underlying ioctl code (pci_ioctl) does is bail with EPERM
if the caller does not have /dev/pci open for write.

Is there any reason why the FWRITE test cannot/should not be moved down
into the 'case PCIOCWRITE' part of the switch? This would make both
PCIOCGETCONF and PCIOCREAD work for readonly access to /dev/pci (which
seems to me to be saner behaviour).

--lyndon


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