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

   1
   2 // BUILD:  $CC foo.c -dynamiclib -install_name $RUN_DIR/libfoo.dylib -o $BUILD_DIR/libfoo.dylib
   3 // BUILD:  cd $BUILD_DIR && ln -s libfoo.dylib libfoo-symlink.dylib
   4 // BUILD:  $CC main.c -o $BUILD_DIR/dlopen-symlink.exe -DRUN_DIR="$RUN_DIR"
   5
   6 // RUN:  ./dlopen-symlink.exe
   7
   8
   9 #include <stdio.h>
  10 #include <string.h>
  11 #include <dlfcn.h>
  12 #include <mach-o/dyld.h>
  13 #include <mach-o/dyld_priv.h>
  14
  15
  16 int main()
  17 {
  18     printf("[BEGIN] dlopen-symlink\n");
  19
  20     // call dlopen() with a path that is a symlink
  21     void* handle = dlopen(RUN_DIR "/libfoo-symlink.dylib", RTLD_LAZY);
  22     if ( handle == NULL ) {
  23         printf("dlerror(): %s\n", dlerror());
  24         printf("[FAIL]  dlopen-symlink\n");
  25         return 0;
  26     }
  27
  28     // walk images to see if path was converted to real path
  29     const char* foundPath = NULL;
  30     int count = _dyld_image_count();
  31     for (int i=0; i < count; ++i) {
  32         const char* path = _dyld_get_image_name(i);
  33         //printf("path[%2d]=%s\n", i, path);
  34         if ( strstr(path, "libfoo") != NULL ) {
  35             if ( foundPath == NULL ) {
  36                 foundPath = path;
  37             }
  38             else {
  39                 printf("[FAIL]  dlopen-symlink: more than one libfoo found\n");
  40                 return 0;
  41             }
  42         }
  43     }
  44     if ( foundPath == NULL ) {
  45         printf("[FAIL]  dlopen-symlink: no libfoo found\n");
  46         return 0;
  47     }
  48     if ( strstr(foundPath, "libfoo-symlink") != NULL ) {
  49         printf("[FAIL]  dlopen-symlink: path is symlink not real path: %s\n", foundPath);
  50         return 0;
  51     }
  52
  53     printf("[PASS]  dlopen-symlink\n");
  54         return 0;
  55 }
  56