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:  $SYMLINK libfoo.dylib $BUILD_DIR/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 #include "test_support.h"
  14
  15 int main(int argc, const char* argv[], const char* envp[], const char* apple[]) {
  16     ///
  17     /// This tests that RTLD_NOLOAD finds existing dylib statically linked
  18     ///
  19     void* handle = dlopen(RUN_DIR "/libfoo.dylib", RTLD_NOLOAD);
  20     if ( handle == NULL ) {
  21         FAIL("dlopen(\"libfoo.dylib\", RTLD_NOLOAD) failed but it should have worked: %s", dlerror());
  22     }
  23     void* sym = dlsym(handle, "foo");
  24     if ( sym == NULL ) {
  25         FAIL("dlsym(handle, \"foo\") failed but it should have worked: %s", dlerror());
  26     }
  27
  28     ///
  29     /// This tests that RTLD_NOLOAD verifies that non-existant dylib returns NULL
  30     ///
  31     void* handle2 = dlopen(RUN_DIR "/libfobbulate.dylib", RTLD_NOLOAD);
  32     if ( handle2 != NULL ) {
  33         FAIL("dlopen(\"libfobbulate.dylib\", RTLD_NOLOAD) succeeded but it should have failed");
  34     }
  35
  36
  37     ///
  38     /// This tests that RTLD_NOLOAD finds symlink to existing dylib
  39     ///
  40     void* handle3 = dlopen(RUN_DIR "/libfoo-sym.dylib", RTLD_NOLOAD);
  41     if ( handle3 == NULL ) {
  42         FAIL("dlopen(\"libfoo-sym.dylib\", RTLD_NOLOAD) failed but it should have worked: %s", dlerror());
  43     }
  44
  45
  46     ///
  47     /// This tests that RTLD_NOLOAD of something in the dyld cache that is not yet loaded returns NULL
  48     ///
  49     void* handle4 = dlopen("/usr/lib/libz.1.dylib", RTLD_NOLOAD);
  50     if ( handle4 != NULL ) {
  51         FAIL("dlopen(\"libz.dylib\", RTLD_NOLOAD) worked but it should have failed");
  52     }
  53
  54     PASS("Success");
  55 }