Merge branch 'master' into next

[pandora-kernel.git] / kernel / module.c

diff --git a/kernel/module.c b/kernel/module.c
index c268a77..cb3887e 100644 (file)
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -72,6 +72,9 @@ DEFINE_MUTEX(module_mutex);
 EXPORT_SYMBOL_GPL(module_mutex);
 static LIST_HEAD(modules);
 
+/* Block module loading/unloading? */
+int modules_disabled = 0;
+
 /* Waiting for a module to finish initializing? */
 static DECLARE_WAIT_QUEUE_HEAD(module_wq);
 
@@ -777,7 +780,7 @@ SYSCALL_DEFINE2(delete_module, const char __user *, name_user,
        char name[MODULE_NAME_LEN];
        int ret, forced = 0;
 
-       if (!capable(CAP_SYS_MODULE))
+       if (!capable(CAP_SYS_MODULE) || modules_disabled)
                return -EPERM;
 
        if (strncpy_from_user(name, name_user, MODULE_NAME_LEN-1) < 0)
@@ -1952,9 +1955,6 @@ static noinline struct module *load_module(void __user *umod,
                if (strstarts(secstrings+sechdrs[i].sh_name, ".exit"))
                        sechdrs[i].sh_flags &= ~(unsigned long)SHF_ALLOC;
 #endif
-               /* Don't keep __versions around; it's just for loading. */
-               if (strcmp(secstrings + sechdrs[i].sh_name, "__versions") == 0)
-                       sechdrs[i].sh_flags &= ~(unsigned long)SHF_ALLOC;
        }
 
        modindex = find_sec(hdr, sechdrs, secstrings,
@@ -2339,7 +2339,7 @@ SYSCALL_DEFINE3(init_module, void __user *, umod,
        int ret = 0;
 
        /* Must have permission */
-       if (!capable(CAP_SYS_MODULE))
+       if (!capable(CAP_SYS_MODULE) || modules_disabled)
                return -EPERM;
 
        /* Only one module load at a time, please */
@@ -2391,6 +2391,9 @@ SYSCALL_DEFINE3(init_module, void __user *, umod,
        blocking_notifier_call_chain(&module_notify_list,
                                     MODULE_STATE_LIVE, mod);
 
+       /* We need to finish all async code before the module init sequence is done */
+       async_synchronize_full();
+
        mutex_lock(&module_mutex);
        /* Drop initial reference. */
        module_put(mod);