This will use sysfs_create_file_uevent to create a sysfs file and send out
a uevent to userspace application such as udev.
Signed-off-by: Bryan Wu <bryan...@canonical.com>
---
drivers/base/core.c | 19 +++++++++++++++++++
include/linux/device.h | 4 ++++
2 files changed, 23 insertions(+)
diff --git a/drivers/base/core.c b/drivers/base/core.c
index 346be8b..62fd266 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -538,6 +538,25 @@ int device_create_file(struct device *dev,
}
/**
+ * device_create_file_uevent - create sysfs attribute file for device
+ * and send a uevent to userspace.
+ * @dev: device.
+ * @attr: device attribute descriptor.
+ * @desc: description about the uevent.
+ * @action: kobject uevent action type.
+ */
+int device_create_file_uevent(struct device *dev,
+ const struct device_attribute *attr,
+ const char *desc,
+ enum kobject_action action)
+{
+ int error = 0;
+ if (dev)
+ error = sysfs_create_file_uevent(&dev->kobj, &attr->attr,
+ desc, action);
+ return error;
+}
+/**
* device_remove_file - remove sysfs attribute file.
* @dev: device.
* @attr: device attribute descriptor.
diff --git a/include/linux/device.h b/include/linux/device.h
index 6de9415..d1545f3 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -510,6 +510,10 @@ ssize_t device_store_int(struct device *dev, struct
device_attribute *attr,
extern int device_create_file(struct device *device,
const struct device_attribute *entry);
+extern int device_create_file_uevent(struct device *dev,
+ const struct device_attribute *attr,
+ const char *desc,
+ enum kobject_action action);
extern void device_remove_file(struct device *dev,
const struct device_attribute *attr);
extern int __must_check device_create_bin_file(struct device *dev,
--
1.7.11.1
--
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