Add a new module_file() function that returns the linker_file_t associated

with a given module_t.  I use this in some the MOD_LOAD event handler for
some test kernel modules to ask the kernel linker to look up the linker
sets in my test modules. (I use linker sets to generate the list of
possible events that I then signal to execute via a sysctl.  On non-amd64,
ld(8) would resolve the entire linker set, but on amd64 I have to ask the
kernel linker to do it for me, and having the kernel linker do it works on
all archs.)

sys/kern/kern_module.c

@@ -264,6 +264,13 @@ module_setspecific(module_t mod, modspecific_t *datap)
 	mod->data = *datap;
 }
 
+linker_file_t
+module_file(module_t mod)
+{
+
+	return (mod->file);
+}
+
 /*
  * Syscalls.
  */

sys/sys/module.h

@@ -147,6 +147,7 @@ int	module_unload(module_t, int flags);
 int	module_getid(module_t);
 module_t	module_getfnext(module_t);
 void	module_setspecific(module_t, modspecific_t *);
+struct linker_file *module_file(module_t);
 
 #ifdef	MOD_DEBUG
 extern int mod_debug;