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Line 40:
Line 40: − Translate parameters comes in pairs of two words, one descriptor and one value. + + + + + + + + + + + + + + + + +
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Translate parameters are modified/translated transparently by the kernel. They are used to transfer handles/buffers between the different processes.
Translate parameters are modified/translated transparently by the kernel. They are used to transfer handles/buffers between the different processes.
The type of parameter is described by the bits 1-3 in the translation descriptor. Parameter types accepted by the kernel are: 0, 1, (2?), 5, 6, 7.
The number of parameters covered by a descriptor is type-dependent:
Type 0:
length = (desc >> 26) + 1
Type 1, (2?), 5, 6, 7:
length = 1
Type 0 does the following:
if desc & 0x30 == 0x20:
write process id to value
else:
translate handle
if desc & 0x30 == 0x10:
close handle for caller
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