[SCSI] sysfs: add filter function to groups

[linux-2.6-omap-h63xx.git] / include / linux / notifier.h

diff --git a/include/linux/notifier.h b/include/linux/notifier.h
index be3f2bb6fcf39a6b4b911bb71158d04ef246bdb6..0c40cc0b4a362034fbe444a929ab1d9a0ecdb749 100644 (file)
--- a/include/linux/notifier.h
+++ b/include/linux/notifier.h
@@ -157,6 +157,19 @@ extern int __srcu_notifier_call_chain(struct srcu_notifier_head *nh,
  */
 #define NOTIFY_STOP            (NOTIFY_OK|NOTIFY_STOP_MASK)
 
+/* Encapsulate (negative) errno value (in particular, NOTIFY_BAD <=> EPERM). */
+static inline int notifier_from_errno(int err)
+{
+       return NOTIFY_STOP_MASK | (NOTIFY_OK - err);
+}
+
+/* Restore (negative) errno value from notify return value. */
+static inline int notifier_to_errno(int ret)
+{
+       ret &= ~NOTIFY_STOP_MASK;
+       return ret > NOTIFY_OK ? NOTIFY_OK - ret : 0;
+}
+
 /*
  *     Declared notifiers so far. I can imagine quite a few more chains
  *     over time (eg laptop power reset chains, reboot chain (to clean 
@@ -218,5 +231,22 @@ extern int __srcu_notifier_call_chain(struct srcu_notifier_head *nh,
 #define PM_SUSPEND_PREPARE     0x0003 /* Going to suspend the system */
 #define PM_POST_SUSPEND                0x0004 /* Suspend finished */
 
+/* Console keyboard events.
+ * Note: KBD_KEYCODE is always sent before KBD_UNBOUND_KEYCODE, KBD_UNICODE and
+ * KBD_KEYSYM. */
+#define KBD_KEYCODE            0x0001 /* Keyboard keycode, called before any other */
+#define KBD_UNBOUND_KEYCODE    0x0002 /* Keyboard keycode which is not bound to any other */
+#define KBD_UNICODE            0x0003 /* Keyboard unicode */
+#define KBD_KEYSYM             0x0004 /* Keyboard keysym */
+#define KBD_POST_KEYSYM                0x0005 /* Called after keyboard keysym interpretation */
+
+extern struct blocking_notifier_head reboot_notifier_list;
+
+/* Virtual Terminal events. */
+#define VT_ALLOCATE            0x0001 /* Console got allocated */
+#define VT_DEALLOCATE          0x0002 /* Console will be deallocated */
+#define VT_WRITE               0x0003 /* A char got output */
+#define VT_UPDATE              0x0004 /* A bigger update occurred */
+
 #endif /* __KERNEL__ */
 #endif /* _LINUX_NOTIFIER_H */