src/tests/system/runtime_loader/test_suite/load_lookup_next1

   1 #!/bin/sh
   2
   3 # program
   4 # <- liba.so
   5 #    <- libb.so
   6 #       <- libd.so
   7 #
   8 # Expected: dlsym(RTLD_NEXT) finds symbol in order liba.so, libb.so, libd.so
   9
  10
  11 . ./test_setup
  12
  13
  14 # create libd.so
  15 cat > libd.c << EOI
  16 int a() { return 1; }
  17 EOI
  18
  19 # build
  20 compile_lib -o libd.so libd.c
  21
  22
  23 # create libb.so
  24 cat > libb.c << EOI
  25 #define __USE_GNU
  26 #include <dlfcn.h>
  27 int
  28 a()
  29 {
  30         int (*nextA)();
  31         *(void**)&nextA = dlsym(RTLD_NEXT, "a");
  32         return (nextA != 0 ? nextA() : 0) + 2;
  33 }
  34 EOI
  35
  36 # build
  37 compile_lib_dl -o libb.so libb.c ./libd.so
  38
  39
  40 # create liba.so
  41 cat > liba.c << EOI
  42 #include <dlfcn.h>
  43 int
  44 a()
  45 {
  46         int (*nextA)();
  47         *(void**)&nextA = dlsym(RTLD_NEXT, "a");
  48         return (nextA != 0 ? nextA() : 0) + 4;
  49 }
  50 EOI
  51
  52 # build
  53 compile_lib_dl -o liba.so liba.c ./libb.so
  54
  55
  56 # create program
  57 cat > program.c << EOI
  58
  59 #include <dlfcn.h>
  60 int
  61 a()
  62 {
  63         int (*nextA)();
  64         *(void**)&nextA = dlsym(RTLD_NEXT, "a");
  65         return (nextA != 0 ? nextA() : 0) + 8;
  66 }
  67
  68 int
  69 main()
  70 {
  71         return a();
  72 }
  73 EOI
  74
  75 # build
  76 compile_program_dl -o program program.c ./liba.so
  77
  78 # run
  79 test_run_ok ./program 15
  80