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Viewing changes to debian/hwmatch.lua

  • Committer: Colin Watson
  • Date: 2011-03-30 00:26:07 UTC
  • Revision ID: cjwatson@canonical.com-20110330002607-579c4te8aqjrrbd7
Rewrite hwmatch.lua in C.  Drop lua grub-extras module.

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Lines of Context:
debian/hwmatch.lua
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#!lua
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matches_file = grub.getenv("matches_file")
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class_match = tonumber(grub.getenv("class_match"))
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match = 0
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function test_device(bus, dev, func, pciid, subpciid, class)
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   baseclass = bit.rshift(class, 24)
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   if (class_match and class_match ~= baseclass) then return end
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   vendor = bit.band(0xffff, pciid)
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   device = bit.rshift(pciid, 16)
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   subvendor = bit.band(0xffff, subpciid)
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   subdevice = bit.rshift(subpciid, 16)
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   subclass = bit.band(0xff, bit.rshift(class, 16))
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   id = string.format("v%04xd%04xsv%04xsd%04xbc%02xsc%02x",
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                      vendor,
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                      device,
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                      subvendor,
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                      subdevice,
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                      baseclass,
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                      subclass)
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   matches = grub.file_open(matches_file)
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   while (not grub.file_eof(matches)) do
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      line = grub.file_getline(matches)
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      if (line ~= "" and string.find(id, string.format("^%s$", line))) then
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         match = 1
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         return 1
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      end
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   end
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end
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if (grub.file_exist(matches_file)) then
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   grub.enum_pci(test_device)
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end
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grub.setenv("match", match)