[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/libc/glibc/glibc-2.22/elf/unload.c b/ap/libc/glibc/glibc-2.22/elf/unload.c
new file mode 100644
index 0000000..4566f22
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.22/elf/unload.c
@@ -0,0 +1,91 @@
+/* Test for unloading (really unmapping) of objects. By Franz Sirl.
+ This test does not have to passed in all dlopen() et.al. implementation
+ since it is not required the unloading actually happens. But we
+ require it for glibc. */
+
+#include <dlfcn.h>
+#include <link.h>
+#include <mcheck.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#define MAPS ((struct link_map *) _r_debug.r_map)
+
+#define OUT \
+ for (map = MAPS; map != NULL; map = map->l_next) \
+ if (map->l_type == lt_loaded) \
+ printf ("name = \"%s\", direct_opencount = %d\n", \
+ map->l_name, (int) map->l_direct_opencount); \
+ fflush (stdout)
+
+typedef struct
+{
+ void *next;
+} strct;
+
+int
+main (void)
+{
+ void *sohandle;
+ strct *testdat;
+ int ret;
+ int result = 0;
+ struct link_map *map;
+
+ mtrace ();
+
+ puts ("\nBefore");
+ OUT;
+
+ sohandle = dlopen ("unloadmod.so", RTLD_NOW | RTLD_GLOBAL);
+ if (sohandle == NULL)
+ {
+ printf ("*** first dlopen failed: %s\n", dlerror ());
+ exit (1);
+ }
+
+ puts ("\nAfter loading unloadmod.so");
+ OUT;
+
+ testdat = dlsym (sohandle, "testdat");
+ testdat->next = (void *) -1;
+
+ ret = dlclose (sohandle);
+ if (ret != 0)
+ {
+ puts ("*** first dlclose failed");
+ result = 1;
+ }
+
+ puts ("\nAfter closing unloadmod.so");
+ OUT;
+
+ sohandle = dlopen ("unloadmod.so", RTLD_NOW | RTLD_GLOBAL);
+ if (sohandle == NULL)
+ {
+ printf ("*** second dlopen failed: %s\n", dlerror ());
+ exit (1);
+ }
+
+ puts ("\nAfter loading unloadmod.so the second time");
+ OUT;
+
+ testdat = dlsym (sohandle, "testdat");
+ if (testdat->next == (void *) -1)
+ {
+ puts ("*** testdat->next == (void *) -1");
+ result = 1;
+ }
+
+ ret = dlclose (sohandle);
+ if (ret != 0)
+ {
+ puts ("*** second dlclose failed");
+ result = 1;
+ }
+
+ puts ("\nAfter closing unloadmod.so again");
+ OUT;
+
+ return result;
+}