src/tests/system/runtime_loader/test_suite/dlopen_lookup_order3

   1 #!/bin/sh
   2
   3 # program
   4 #
   5 # dlopen():
   6 # liba.so
   7 # <- libb.so
   8 #    <- libb_dependency.so
   9 # <- libd.so
  10 #
  11 # Expected: liba.so lookup: Symbol in libd.so supersedes symbol in
  12 # libb_dependency.so.
  13
  14
  15 . ./test_setup
  16
  17
  18 # create libb_dependency.so
  19 cat > libb_dependency.c << EOI
  20 int a() { 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 > libd.c << EOI
  38 int a() { return 2; }
  39 EOI
  40
  41 # build
  42 compile_lib -o libd.so libd.c
  43
  44
  45 # create liba.so
  46 cat > liba.c << EOI
  47 int c() { return 1; }
  48 EOI
  49
  50 # build
  51 compile_lib -o liba.so liba.c ./libb.so ./libd.so
  52
  53
  54 # create program
  55 cat > program.c << EOI
  56 #include <dlfcn.h>
  57 #include <stdio.h>
  58 #include <stdlib.h>
  59 int
  60 main()
  61 {
  62         void* liba;
  63         int (*a)();
  64
  65         liba = dlopen("./liba.so", RTLD_NOW | RTLD_GLOBAL);
  66         if (liba == NULL) {
  67                 fprintf(stderr, "Error opening liba.so: %s\n", dlerror());
  68                 exit(117);
  69         }
  70
  71         a = (int (*)())dlsym(liba, "a");
  72         if (a == NULL) {
  73                 fprintf(stderr, "Error getting symbol a: %s\n", dlerror());
  74                 exit(116);
  75         }
  76
  77         return a();
  78 }
  79 EOI
  80
  81 # build
  82 compile_program_dl -o program program.c
  83
  84 # run
  85 test_run_ok ./program 2