testing/test-cases/kernel-auxkc-fixups.dtest/main.c

   1
   2 // BOOT_ARGS: amfi=3 cs_enforcement_disable=1
   3
   4 // Create the base kernel collection
   5 // BUILD(macos,ios,tvos,bridgeos|x86_64,arm64,arm64e):  $CP extensions/kernel-export.kext/Info.plist $BUILD_DIR/extensions/kernel-export-kext/Info.plist
   6 // BUILD(macos,ios,tvos,bridgeos|x86_64,arm64,arm64e):  $CC main.c -o $BUILD_DIR/kernel-auxkc-fixups.exe -Wl,-static -mkernel -nostdlib -Wl,-add_split_seg_info -Wl,-e,__start -Wl,-pie -Wl,-pagezero_size,0x0 -Wl,-install_name,/usr/lib/swift/split.seg.v2.hack -fno-stack-protector -fno-builtin -ffreestanding -Wl,-segprot,__HIB,rx,rx -Wl,-image_base,0x8000 -Wl,-segaddr,__HIB,0x4000 -fno-ptrauth-function-pointer-type-discrimination -ftrivial-auto-var-init=uninitialized
   7 // BUILD(macos,ios,tvos,bridgeos|x86_64,arm64,arm64e):  $CC kernel-export.c -o $BUILD_DIR/extensions/kernel-export-kext/kernel-export -Wl,-kext -Wl,-kext_objects_dir,$BUILD_DIR/KextObjects -mkernel -nostdlib -Wl,-add_split_seg_info -Wl,-install_name,/usr/lib/swift/split.seg.v2.hack -fno-ptrauth-function-pointer-type-discrimination
   8 // BUILD(macos,ios,tvos,bridgeos|x86_64,arm64,arm64e):  $APP_CACHE_UTIL -create-kernel-collection $BUILD_DIR/kernel.kc -kernel $BUILD_DIR/kernel-auxkc-fixups.exe -extensions $BUILD_DIR/extensions -bundle-id com.apple.kernel.export $DEPENDS_ON $BUILD_DIR/extensions/kernel-export-kext/Info.plist $DEPENDS_ON $BUILD_DIR/extensions/kernel-export-kext/kernel-export
   9
  10 // Create the aux kernel collection
  11 // BUILD(macos,ios,tvos,bridgeos|x86_64,arm64,arm64e):  $CP extensions/foo.kext/Info.plist $BUILD_DIR/extensions/foo-kext/Info.plist
  12 // BUILD(macos,ios,tvos,bridgeos|x86_64,arm64,arm64e):  $CP extensions/bar.kext/Info.plist $BUILD_DIR/extensions/bar-kext/Info.plist
  13 // BUILD(macos,ios,tvos,bridgeos|x86_64,arm64,arm64e):  $CC foo.c -o $BUILD_DIR/extensions/foo-kext/foo -Wl,-kext -Wl,-kext_objects_dir,$BUILD_DIR/KextObjects -mkernel -nostdlib -Wl,-add_split_seg_info -Wl,-install_name,/usr/lib/swift/split.seg.v2.hack -fno-ptrauth-function-pointer-type-discrimination
  14 // BUILD(macos,ios,tvos,bridgeos|x86_64,arm64,arm64e):  $CC bar.c -o $BUILD_DIR/extensions/bar-kext/bar -Wl,-kext -Wl,-kext_objects_dir,$BUILD_DIR/KextObjects -mkernel -nostdlib -Wl,-add_split_seg_info -Wl,-install_name,/usr/lib/swift/split.seg.v2.hack -fno-ptrauth-function-pointer-type-discrimination
  15 // BUILD(macos,ios,tvos,bridgeos|x86_64,arm64,arm64e):  $APP_CACHE_UTIL -create-aux-kernel-collection $BUILD_DIR/aux.kc -kernel-collection $BUILD_DIR/kernel.kc -extensions $BUILD_DIR/extensions  -bundle-id com.apple.foo $DEPENDS_ON $BUILD_DIR/extensions/foo-kext/Info.plist $DEPENDS_ON $BUILD_DIR/extensions/bar-kext/Info.plist $DEPENDS_ON $BUILD_DIR/extensions/foo-kext/foo $DEPENDS_ON $BUILD_DIR/extensions/bar-kext/bar
  16
  17 // BUILD(watchos):
  18
  19 // RUN_STATIC:    $RUN_STATIC $RUN_DIR/kernel.kc - - $RUN_DIR/aux.kc
  20
  21 #include "../kernel-test-runner.h"
  22 #include "../kernel-fixups.h"
  23 #include "../kernel-classic-relocs.h"
  24 #include "../kernel-helpers.h"
  25
  26 #define printf(...) funcs->printf(__VA_ARGS__)
  27
  28 int x = 1;
  29 int *g = &x;
  30
  31 #if __x86_64__
  32 __attribute__((section(("__HIB, __text"))))
  33 #else
  34 __attribute__((section(("__TEXT_EXEC, __text"))))
  35 #endif
  36 int _start(const TestRunnerFunctions* funcs)
  37 {
  38     setFuncs(funcs);
  39
  40     const void* slideBasePointers[4];
  41     slideBasePointers[0] = funcs->basePointers[0];
  42     slideBasePointers[1] = funcs->basePointers[1];
  43     slideBasePointers[2] = funcs->basePointers[2];
  44     slideBasePointers[3] = funcs->basePointers[3];
  45     int slideReturnCode = slide(funcs->mhs[0], slideBasePointers, funcs->printf);
  46     if ( slideReturnCode != 0 ) {
  47         FAIL("mhs[0] slide = %d\n", slideReturnCode);
  48         return 0;
  49     }
  50
  51     int slideClassicReturnCode = slideClassic(funcs->mhs[0], funcs->printf);
  52     if ( slideClassicReturnCode != 0 ) {
  53         FAIL("mhs[0] slide classic = %d\n", slideClassicReturnCode);
  54         return 0;
  55     }
  56
  57     if ( g[0] != x ) {
  58         FAIL("g[0] != x, %d != %d\n", g[0], x);
  59         return 0;
  60     }
  61
  62     // First slide the auxKC using the top level fixups.  These handle the branch GOTs
  63     slideReturnCode = slide(funcs->mhs[3], slideBasePointers, funcs->printf);
  64     if ( slideReturnCode != 0 ) {
  65         FAIL("mhs[3] slide = %d\n", slideReturnCode);
  66         return 0;
  67     }
  68
  69 #if __x86_64__
  70     // On x86 only, slide the auxKC individually
  71     // Then slide pageable using the fixups attached to the kexts own mach headers
  72     slideReturnCode = slideKextsInsideKernelCollection(funcs->mhs[3], slideBasePointers, funcs->printf, funcs);
  73     if ( slideReturnCode != 0 ) {
  74         FAIL("mhs[3] slide = %d\n", slideReturnCode);
  75         return 0;
  76     }
  77 #endif
  78
  79     // If we have any mod init funcs, then lets run them now
  80     int runModInitFuncs = runAllModInitFunctionsForAppCache(funcs->mhs[3], funcs->printf, funcs);
  81     if ( runModInitFuncs != 0 ) {
  82         FAIL("runModInitFuncs = %d\n", runModInitFuncs);
  83         return 0;
  84     }
  85
  86     PASS("Success");
  87     return 0;
  88 }
  89
  90