Signed-off-by: Arnaud Lacombe <lacombar@xxxxxxxxx>
---
include/linux/compat-2.6.23.h | 14 ++++++++++++++
1 files changed, 14 insertions(+), 0 deletions(-)
diff --git a/include/linux/compat-2.6.23.h b/include/linux/compat-2.6.23.h
index fbfb470..5dd6301 100644
--- a/include/linux/compat-2.6.23.h
+++ b/include/linux/compat-2.6.23.h
@@ -7,11 +7,25 @@
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,23))
#include <linux/netdevice.h>
+#include <linux/notifier.h>
#include <linux/sched.h>
#include <linux/workqueue.h>
#include <linux/genetlink.h>
#include <net/sch_generic.h>
+/* 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;
+}
+
/*
* Tell gcc if a function is cold. The compiler will assume any path
* directly leading to the call is unlikely.
--
1.7.2.30.gc37d7.dirty
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