src/tests/system/runtime_loader/test_suite/dlopen_resolve_order7

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