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r68091bd	rc7c0b89b
40	40	* Interface to be implemented by all architectures.
41	41	*/
	42	extern __native ddi_int_control_arch(__native enable, __native *flags);
	43	extern __native ddi_int_control(__native enable, __native *flags);
42	44	extern int ddi_enable_iospace_arch(task_t *task, __address ioaddr, size_t size);
43	45

generic/include/security/cap.h

-              r68091bd
+              rc7c0b89b
 #define CAP_IO_MANAGER          (1<<2)
+/**
+ * CAP_INT_CONTROL allows its holder to disable interrupts
+ */
+#define CAP_INT_CONTROL         (1<<3)
 typedef __u32 cap_t;

r68091bd	rc7c0b89b
33	33	SYS_IO = 0,
34	34	SYS_TLS_SET = 1, /* Hardcoded in AMD64,IA32 uspace - psthread.S */
	35	SYS_INT_CONTROL = 2, /* Hardcoded in all SYSCALL handlers */
35	36	SYS_THREAD_CREATE,
36	37	SYS_THREAD_EXIT,

-              r68091bd
+              rc7c0b89b
         return (__native) ddi_enable_iospace((task_id_t) arg.task_id, (__address) arg.ioaddr, (size_t) arg.size);
+}
+__native ddi_int_control(__native enable, __native *flags)
+{
+        if (! cap_get(TASK) & CAP_INT_CONTROL)
+                return EPERM;
+        return ddi_int_control_arch(enable, flags);
+}

-              r68091bd
+              rc7c0b89b
+}
+static __native sys_int_control(int enable)
+{
+        panic("Not implemented.");
+}
 /** Dispatch system call */
 __native syscall_handler(__native a1, __native a2, __native a3,
 …
         sys_io,
         sys_tls_set,
+        sys_int_control,
         sys_thread_create,
         sys_thread_exit,

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