testing/kernel-cache-tests/bundle-ids/test.py

   1 #!/usr/bin/python2.7
   2
   3 import os
   4 import KernelCollection
   5
   6 # This verifies that we are able to build a kernel collection with a kernel and kext's referenced as bundle id's
   7
   8 def check(kernel_cache):
   9     kernel_cache.buildKernelCollection("arm64", "/bundle-ids/main.kc", "/bundle-ids/main.kernel", "/bundle-ids/extensions", ["com.apple.foo", "com.apple.bar"], [])
  10     kernel_cache.analyze("/bundle-ids/main.kc", ["-layout", "-arch", "arm64"])
  11
  12     assert len(kernel_cache.dictionary()["cache-segments"]) == 6
  13     assert kernel_cache.dictionary()["cache-segments"][0]["name"] == "__TEXT"
  14     assert kernel_cache.dictionary()["cache-segments"][0]["vmAddr"] == "0x0"
  15     assert kernel_cache.dictionary()["cache-segments"][1]["name"] == "__PRELINK_TEXT"
  16     assert kernel_cache.dictionary()["cache-segments"][1]["vmAddr"] == "0x4000"
  17     assert kernel_cache.dictionary()["cache-segments"][2]["name"] == "__TEXT_EXEC"
  18     assert kernel_cache.dictionary()["cache-segments"][2]["vmAddr"] == "0xC000"
  19     assert kernel_cache.dictionary()["cache-segments"][3]["name"] == "__PRELINK_INFO"
  20     assert kernel_cache.dictionary()["cache-segments"][3]["vmAddr"] == "0x18000"
  21     assert kernel_cache.dictionary()["cache-segments"][4]["name"] == "__DATA"
  22     assert kernel_cache.dictionary()["cache-segments"][4]["vmAddr"] == "0x1C000"
  23     assert kernel_cache.dictionary()["cache-segments"][5]["name"] == "__LINKEDIT"
  24     assert kernel_cache.dictionary()["cache-segments"][5]["vmAddr"] == "0x20000"
  25
  26     assert len(kernel_cache.dictionary()["dylibs"]) == 3
  27     # main.kernel
  28     assert kernel_cache.dictionary()["dylibs"][0]["name"].endswith("com.apple.kernel")
  29     assert len(kernel_cache.dictionary()["dylibs"][0]["segments"]) == 3
  30     assert kernel_cache.dictionary()["dylibs"][0]["segments"][0]["name"] == "__TEXT"
  31     assert kernel_cache.dictionary()["dylibs"][0]["segments"][0]["vmAddr"] == "0xC000"
  32     assert kernel_cache.dictionary()["dylibs"][0]["segments"][1]["name"] == "__TEXT_EXEC"
  33     assert kernel_cache.dictionary()["dylibs"][0]["segments"][1]["vmAddr"] == "0x10000"
  34     assert kernel_cache.dictionary()["dylibs"][0]["segments"][2]["name"] == "__LINKEDIT"
  35     assert kernel_cache.dictionary()["dylibs"][0]["segments"][2]["vmAddr"] == "0x20000"
  36     # bar.kext
  37     assert kernel_cache.dictionary()["dylibs"][1]["name"].endswith("bar")
  38     assert len(kernel_cache.dictionary()["dylibs"][1]["segments"]) == 4
  39     assert kernel_cache.dictionary()["dylibs"][1]["segments"][0]["name"] == "__TEXT"
  40     assert kernel_cache.dictionary()["dylibs"][1]["segments"][0]["vmAddr"] == "0x4000"
  41     assert kernel_cache.dictionary()["dylibs"][1]["segments"][1]["name"] == "__TEXT_EXEC"
  42     assert kernel_cache.dictionary()["dylibs"][1]["segments"][1]["vmAddr"] == "0x14000"
  43     assert kernel_cache.dictionary()["dylibs"][1]["segments"][2]["name"] == "__DATA"
  44     assert kernel_cache.dictionary()["dylibs"][1]["segments"][2]["vmAddr"] == "0x1C000"
  45     assert kernel_cache.dictionary()["dylibs"][1]["segments"][3]["name"] == "__LINKEDIT"
  46     assert kernel_cache.dictionary()["dylibs"][1]["segments"][3]["vmAddr"] == "0x20000"
  47     # foo.kext
  48     assert kernel_cache.dictionary()["dylibs"][2]["name"].endswith("foo")
  49     assert len(kernel_cache.dictionary()["dylibs"][2]["segments"]) == 4
  50     assert kernel_cache.dictionary()["dylibs"][2]["segments"][0]["name"] == "__TEXT"
  51     assert kernel_cache.dictionary()["dylibs"][2]["segments"][0]["vmAddr"] == "0x8000"
  52     assert kernel_cache.dictionary()["dylibs"][2]["segments"][1]["name"] == "__TEXT_EXEC"
  53     assert kernel_cache.dictionary()["dylibs"][2]["segments"][1]["vmAddr"] == "0x14030"
  54     assert kernel_cache.dictionary()["dylibs"][2]["segments"][2]["name"] == "__DATA"
  55     assert kernel_cache.dictionary()["dylibs"][2]["segments"][2]["vmAddr"] == "0x1C010"
  56     assert kernel_cache.dictionary()["dylibs"][2]["segments"][3]["name"] == "__LINKEDIT"
  57     assert kernel_cache.dictionary()["dylibs"][2]["segments"][3]["vmAddr"] == "0x20000"
  58
  59     # Check the fixups
  60     kernel_cache.analyze("/bundle-ids/main.kc", ["-fixups", "-arch", "arm64"])
  61     assert len(kernel_cache.dictionary()["fixups"]) == 2
  62     assert kernel_cache.dictionary()["fixups"]["0x1C000"] == "kc(0) + 0x14000"
  63     assert kernel_cache.dictionary()["fixups"]["0x1C010"] == "kc(0) + 0x1C018"
  64     assert len(kernel_cache.dictionary()["dylibs"]) == 3
  65     assert kernel_cache.dictionary()["dylibs"][0]["name"].endswith("com.apple.kernel")
  66     assert kernel_cache.dictionary()["dylibs"][0]["fixups"] == "none"
  67     assert kernel_cache.dictionary()["dylibs"][1]["name"].endswith("bar")
  68     assert kernel_cache.dictionary()["dylibs"][1]["fixups"] == "none"
  69     assert kernel_cache.dictionary()["dylibs"][2]["name"].endswith("foo")
  70     assert kernel_cache.dictionary()["dylibs"][2]["fixups"] == "none"
  71
  72
  73 # [~]> xcrun -sdk iphoneos.internal cc -arch arm64 -Wl,-static -mkernel -nostdlib -Wl,-add_split_seg_info -Wl,-rename_section,__TEXT,__text,__TEXT_EXEC,__text -Wl,-e,__start -Wl,-pagezero_size,0x0 -Wl,-pie main.c -o main.kernel
  74 # [~]> xcrun -sdk iphoneos.internal cc -arch arm64 -Wl,-kext -mkernel -nostdlib -Wl,-add_split_seg_info foo.c -o extensions/foo.kext/foo
  75 # [~]> xcrun -sdk iphoneos.internal cc -arch arm64 -Wl,-kext -mkernel -nostdlib -Wl,-add_split_seg_info bar.c -o extensions/bar.kext/bar
  76 # [~]> rm -r extensions/*.kext/*.ld
  77