+/*
+ * Ensure that an exported symbol [global namespace] does not already exist
+ * in the Kernel or in some other modules exported symbol table.
+ */
+static int verify_export_symbols(struct module *mod)
+{
+ const char *name = NULL;
+ unsigned long i, ret = 0;
+ struct module *owner;
+ const unsigned long *crc;
+
+ for (i = 0; i < mod->num_syms; i++)
+ if (__find_symbol(mod->syms[i].name, &owner, &crc, 1)) {
+ name = mod->syms[i].name;
+ ret = -ENOEXEC;
+ goto dup;
+ }
+
+ for (i = 0; i < mod->num_gpl_syms; i++)
+ if (__find_symbol(mod->gpl_syms[i].name, &owner, &crc, 1)) {
+ name = mod->gpl_syms[i].name;
+ ret = -ENOEXEC;
+ goto dup;
+ }
+
+dup:
+ if (ret)
+ printk(KERN_ERR "%s: exports duplicate symbol %s (owned by %s)\n",
+ mod->name, name, module_name(owner));
+
+ return ret;
+}
+