@@ -29,6 +29,18 @@
#define CLONE_NEWNET 0x40000000 /* New network namespace */
#define CLONE_IO 0x80000000 /* Clone io context */
+#define CLONE_UNUSED 0x00001000 /* Can be reused ? */
+
+#define VALID_CLONE_FLAGS (CSIGNAL | CLONE_VM | CLONE_FS | CLONE_FILES |\
+ CLONE_SIGHAND | CLONE_UNUSED | CLONE_PTRACE |\
+ CLONE_VFORK | CLONE_PARENT | CLONE_THREAD |\
+ CLONE_NEWNS | CLONE_SYSVSEM | CLONE_SETTLS |\
+ CLONE_PARENT_SETTID | CLONE_CHILD_CLEARTID |\
+ CLONE_DETACHED | CLONE_UNTRACED |\
+ CLONE_CHILD_SETTID | CLONE_STOPPED |\
+ CLONE_NEWUTS | CLONE_NEWIPC | CLONE_NEWUSER |\
+ CLONE_NEWPID | CLONE_NEWNET | CLONE_IO)
+
/*
* Scheduling policies
*/
@@ -964,6 +964,9 @@ static struct task_struct *copy_process(unsigned long clone_flags,
struct task_struct *p;
int cgroup_callbacks_done = 0;
+ if (clone_flags & ~VALID_CLONE_FLAGS)
+ return ERR_PTR(-EINVAL);
+
if ((clone_flags & (CLONE_NEWNS|CLONE_FS)) == (CLONE_NEWNS|CLONE_FS))
return ERR_PTR(-EINVAL);