testing/test-cases/NSCreateObjectFileImageFromMemory-basic.dtest/main.c

   1 // BUILD(macos):  $CC main.c  -o $BUILD_DIR/NSCreateObjectFileImageFromMemory-basic.exe -Wno-deprecated-declarations
   2 // BUILD(macos):  $CC foo.c   -o $BUILD_DIR/foo.bundle -bundle
   3
   4 // BUILD(ios,tvos,watchos,bridgeos):
   5
   6 // RUN:  ./NSCreateObjectFileImageFromMemory-basic.exe $RUN_DIR/foo.bundle
   7
   8
   9
  10 #include <stdio.h>
  11 #include <stdlib.h>
  12 #include <string.h>
  13 #include <sys/types.h>
  14 #include <sys/stat.h>
  15 #include <sys/mman.h>
  16 #include <unistd.h>
  17 #include <fcntl.h>
  18 #include <dlfcn.h>
  19 #include <mach-o/dyld.h>
  20
  21 #include "test_support.h"
  22
  23 static void checkBundle(const char* path, bool unlinkBeforeDestroy)
  24 {
  25         int fd = open(path, O_RDONLY, 0);
  26         if ( fd == -1 ) {
  27                 FAIL("open(%s) failed", path);
  28         }
  29
  30         struct stat stat_buf;
  31         if ( fstat(fd, &stat_buf) == -1) {
  32                 FAIL("fstat() failed");
  33         }
  34
  35         void* loadAddress = mmap(NULL, stat_buf.st_size, PROT_READ, MAP_FILE | MAP_PRIVATE, fd, 0);
  36         if ( loadAddress == ((void*)(-1)) ) {
  37                 FAIL("mmap() failed");
  38         }
  39
  40         close(fd);
  41
  42         NSObjectFileImage ofi;
  43         if ( NSCreateObjectFileImageFromMemory(loadAddress, stat_buf.st_size, &ofi) != NSObjectFileImageSuccess ) {
  44                 FAIL("NSCreateObjectFileImageFromMemory failed");
  45         }
  46
  47         NSModule mod = NSLinkModule(ofi, path, NSLINKMODULE_OPTION_NONE);
  48         if ( mod == NULL ) {
  49                 FAIL("NSLinkModule failed");
  50         }
  51
  52    if ( !unlinkBeforeDestroy ) {
  53         // API lets you destroy ofi and NSModule lives on
  54         if ( !NSDestroyObjectFileImage(ofi) ) {
  55             FAIL("NSDestroyObjectFileImage failed");
  56         }
  57     }
  58
  59         NSSymbol sym = NSLookupSymbolInModule(mod, "_fooInBundle");
  60         if ( sym == NULL ) {
  61                 FAIL("NSLookupSymbolInModule failed");
  62         }
  63
  64         void* func = NSAddressOfSymbol(sym);
  65         if ( func == NULL ) {
  66                 FAIL("NSAddressOfSymbol failed");
  67         }
  68
  69     Dl_info info;
  70     if ( dladdr(func, &info) == 0 ) {
  71         FAIL("dladdr(&p, xx) failed");
  72     }
  73     LOG("_fooInBundle found in %s", info.dli_fname);
  74
  75     if ( !NSUnLinkModule(mod, NSUNLINKMODULE_OPTION_NONE) ) {
  76             FAIL("NSUnLinkModule failed");
  77     }
  78
  79     if ( dladdr(func, &info) != 0 ) {
  80         FAIL("dladdr(&p, xx) found but should not have");
  81     }
  82
  83     if ( unlinkBeforeDestroy ) {
  84         if ( !NSDestroyObjectFileImage(ofi) ) {
  85             FAIL("NSDestroyObjectFileImage failed");
  86         }
  87     }
  88 }
  89
  90
  91 int main(int argc, const char* argv[], const char* envp[], const char* apple[]) {
  92     checkBundle(argv[1], true);
  93     checkBundle(argv[1], false);
  94
  95     // Now go again enough times to flush out any limits in our dlopen encodings.
  96     for (unsigned i = 0; i != 255; ++i)
  97       checkBundle(argv[1], false);
  98
  99     PASS("Success");
 100 }
 101