2.5-18.1

1 files changed, 92 insertions, 0 deletions

diff --git a/elf/tst-tls-dlinfo.c b/elf/tst-tls-dlinfo.c
new file mode 100644
index 0000000000..e97b5081fd
--- /dev/null
+++ b/elf/tst-tls-dlinfo.c
@@ -0,0 +1,92 @@
+#include <dlfcn.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <tls.h>
+
+
+#define TEST_FUNCTION do_test ()
+static int
+do_test (void)
+{
+#ifdef USE_TLS
+  static const char modname[] = "tst-tlsmod2.so";
+  int result = 0;
+  int *foop;
+  int (*fp) (int, int *);
+  void *h;
+
+  h = dlopen (modname, RTLD_LAZY);
+  if (h == NULL)
+    {
+      printf ("cannot open '%s': %s\n", modname, dlerror ());
+      exit (1);
+    }
+
+  fp = dlsym (h, "in_dso");
+  if (fp == NULL)
+    {
+      printf ("cannot get symbol 'in_dso': %s\n", dlerror ());
+      exit (1);
+    }
+
+  size_t modid = -1;
+  if (dlinfo (h, RTLD_DI_TLS_MODID, &modid))
+    {
+      printf ("dlinfo RTLD_DI_TLS_MODID failed: %s\n", dlerror ());
+      result = 1;
+    }
+  else
+    printf ("dlinfo says TLS module ID %Zu\n", modid);
+
+  void *block;
+  if (dlinfo (h, RTLD_DI_TLS_DATA, &block))
+    {
+      printf ("dlinfo RTLD_DI_TLS_DATA failed: %s\n", dlerror ());
+      result = 1;
+    }
+  else if (block != NULL)
+    {
+      printf ("dlinfo RTLD_DI_TLS_DATA says %p but should be unallocated\n",
+	      block);
+      result = 1;
+    }
+
+  result |= fp (0, NULL);
+
+  foop = dlsym (h, "foo");
+  if (foop == NULL)
+    {
+      printf ("cannot get symbol 'foo' the second time: %s\n", dlerror ());
+      exit (1);
+    }
+  if (*foop != 16)
+    {
+      puts ("foo != 16");
+      result = 1;
+    }
+
+  /* Now the module's TLS block has been used and should appear.  */
+  if (dlinfo (h, RTLD_DI_TLS_DATA, &block))
+    {
+      printf ("dlinfo RTLD_DI_TLS_DATA failed the second time: %s\n",
+	      dlerror ());
+      result = 1;
+    }
+  else if (block != foop)
+    {
+      printf ("dlinfo RTLD_DI_TLS_DATA says %p but should be %p\n",
+	      block, foop);
+      result = 1;
+    }
+
+  dlclose (h);
+
+  return result;
+#else
+  return 0;
+#endif
+}
+
+
+#include "../test-skeleton.c"