src/tests/system/runtime_loader/test_suite/dlopen_resolve_order4

   1 #!/bin/sh
   2
   3 # program
   4 #
   5 # dlopen():
   6 # libd.so
   7 # liba.so
   8 # <- libb.so
   9 #    <- libb_dependency.so
  10 #
  11 # Expected: Undefined symbol in liba.so resolves to symbol in libd.so,
  12 # not to symbol in libb_dependency.so.
  13
  14
  15 . ./test_setup
  16
  17
  18 # create libb_dependency.so
  19 cat > libb_dependency.c << EOI
  20 int c() { return 1; }
  21 EOI
  22
  23 # build
  24 compile_lib -o libb_dependency.so libb_dependency.c
  25
  26
  27 # create libb.so
  28 cat > libb.c << EOI
  29 int b() { return 1; }
  30 EOI
  31
  32 # build
  33 compile_lib -o libb.so libb.c ./libb_dependency.so
  34
  35
  36 # create liba.so
  37 cat > liba.c << EOI
  38 extern int c();
  39 int a() { return c(); }
  40 EOI
  41
  42 # build
  43 compile_lib -o liba.so liba.c ./libb.so
  44
  45
  46 # create libd.so
  47 cat > libd.c << EOI
  48 int c() { return 2; }
  49 EOI
  50
  51 # build
  52 compile_lib -o libd.so libd.c
  53
  54
  55 # create program
  56 cat > program.c << EOI
  57 #include <dlfcn.h>
  58 #include <stdio.h>
  59 #include <stdlib.h>
  60 int
  61 main()
  62 {
  63         void* liba;
  64         void* libd;
  65         int (*a)();
  66
  67         libd = dlopen("./libd.so", RTLD_NOW | RTLD_GLOBAL);
  68         if (libd == NULL) {
  69                 fprintf(stderr, "Error opening libd.so: %s\n", dlerror());
  70                 exit(117);
  71         }
  72
  73         liba = dlopen("./liba.so", RTLD_NOW | RTLD_GLOBAL);
  74         if (liba == NULL) {
  75                 fprintf(stderr, "Error opening liba.so: %s\n", dlerror());
  76                 exit(117);
  77         }
  78
  79         a = (int (*)())dlsym(liba, "a");
  80         if (a == NULL) {
  81                 fprintf(stderr, "Error getting symbol a: %s\n", dlerror());
  82                 exit(116);
  83         }
  84
  85         return a();
  86 }
  87 EOI
  88
  89 # build
  90 compile_lib_dl -o program program.c
  91
  92 # run
  93 test_run_ok ./program 2
  94