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OS-9 Device Descriptor and Configuration Module Reference

OS-9 Device Descriptor and Configuration Module Reference

OS-9 Device Descriptor and Configuration Module Reference

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SBF <strong>Device</strong> <strong>Descriptor</strong>sdd_modeEditMod Labels2-device descriptor data definitions5-device mode capabilitiesDD_MODE4DescriptionUsed to check the validity of a caller’s access mode byte in I_CREATEor I_OPEN system calls. If a bit is set, the device can perform thecorresponding function. The S_ISIZE bit is usually set, because it ish<strong>and</strong>led by the file manager or ignored. If the S_ISHARE bit is set, thedevice is non-sharable. A printer is an example of a non-sharabledevice.Port Generic Default ValueMacroS_IPRMEditMod0xFFFFPort Specific Override ValueRefer to SBF//DESC/config.des (Figure 4-3).<strong>OS</strong>-9 <strong>Device</strong> <strong>Descriptor</strong> <strong>and</strong> <strong>Configuration</strong> <strong>Module</strong> <strong>Reference</strong> 425

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