testing/test-cases/dlopen-RTLD_NOLOAD.dtest/main.c

   1
   2 // BUILD:  $CC foo.c -dynamiclib  -install_name $RUN_DIR/libfoo.dylib -o $BUILD_DIR/libfoo.dylib
   3 // BUILD:  $CC main.c -DRUN_DIR="$RUN_DIR" $BUILD_DIR/libfoo.dylib -o $BUILD_DIR/dlopen-RTLD_NOLOAD-basic.exe
   4 // BUILD:  cd $BUILD_DIR && ln -s libfoo.dylib libfoo-sym.dylib
   5
   6 // RUN:  ./dlopen-RTLD_NOLOAD-basic.exe
   7
   8 #include <stdio.h>
   9 #include <stdlib.h>
  10 #include <string.h>
  11 #include <dlfcn.h>
  12
  13
  14 int main()
  15 {
  16     printf("[BEGIN] dlopen-RTLD_NOLOAD-basic\n");
  17
  18     ///
  19     /// This tests that RTLD_NOLOAD finds existing dylib statically linked
  20     ///
  21     void* handle = dlopen(RUN_DIR "/libfoo.dylib", RTLD_NOLOAD);
  22     if ( handle == NULL ) {
  23         printf("[FAIL] dlopen-RTLD_NOLOAD-basic: dlopen(libfoo.dylib, RTLD_NOLOAD) failed but it should have worked: %s\n", dlerror());
  24         return 0;
  25     }
  26     void* sym = dlsym(handle, "foo");
  27     if ( sym == NULL ) {
  28         printf("[FAIL] dlopen-RTLD_NOLOAD-basic: dlsym(handle, \"foo\") failed but it should have worked: %s\n", dlerror());
  29         return 0;
  30     }
  31
  32     ///
  33     /// This tests that RTLD_NOLOAD verifies that non-existant dylib returns NULL
  34     ///
  35     void* handle2 = dlopen(RUN_DIR "/libfobbulate.dylib", RTLD_NOLOAD);
  36     if ( handle2 != NULL ) {
  37         printf("[FAIL] dlopen-RTLD_NOLOAD-basic: dlopen(libfobbulate.dylib, RTLD_NOLOAD) succeeded but it should have failed\n");
  38         return 0;
  39     }
  40
  41
  42     ///
  43     /// This tests that RTLD_NOLOAD finds symlink to existing dylib
  44     ///
  45     void* handle3 = dlopen(RUN_DIR "/libfoo-sym.dylib", RTLD_NOLOAD);
  46     if ( handle3 == NULL ) {
  47         printf("[FAIL] dlopen-RTLD_NOLOAD-basic: dlopen(libfoo-sym.dylib, RTLD_NOLOAD) failed but it should have worked: %s\n", dlerror());
  48         return 0;
  49     }
  50
  51
  52     ///
  53     /// This tests that RTLD_NOLOAD of something in the dyld cache that is not yet loaded returns NULL
  54     ///
  55     void* handle4 = dlopen("/usr/lib/libz.1.dylib", RTLD_NOLOAD);
  56     if ( handle4 != NULL ) {
  57         printf("[FAIL] dlopen-RTLD_NOLOAD-basic: dlopen(libz.dylib, RTLD_NOLOAD) worked but it should have failed\n");
  58         return 0;
  59     }
  60
  61
  62     printf("[PASS] dlopen-RTLD_NOLOAD-basic\n");
  63     return 0;
  64 }