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Diffstat (limited to 'elf/tst-tls-dlinfo.c')
-rw-r--r--elf/tst-tls-dlinfo.c92
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 0000000..e97b508
--- /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"