Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=e03f2e8a530e0ed46af43093e23a70b7c7215263
Commit: e03f2e8a530e0ed46af43093e23a70b7c7215263
Parent: 93993a0a3e528357ae4b9b0eb82fd4b428ebbf64
Author: Inaky Perez-Gonzalez <[EMAIL PROTECTED]>
AuthorDate: Tue Jul 31 20:34:07 2007 -0700
Committer: Greg Kroah-Hartman <[EMAIL PROTECTED]>
CommitDate: Fri Oct 12 14:55:08 2007 -0700
usb: hook up device authorization to sysfs
Makes it possible to control the authorization of USB devices through
sysfs's /sys/usb/devices/*/authorize.
Update: per Adrian Bunk's suggestion, make dev_attr_authorized_default
static
Signed-off-by: Inaky Perez-Gonzalez <[EMAIL PROTECTED]>
Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
---
drivers/usb/core/sysfs.c | 39 +++++++++++++++++++++++++++++++++++++++
1 files changed, 39 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c
index 2ab222b..e025902 100644
--- a/drivers/usb/core/sysfs.c
+++ b/drivers/usb/core/sysfs.c
@@ -413,6 +413,44 @@ usb_descriptor_attr(bDeviceProtocol, "%02x\n")
usb_descriptor_attr(bNumConfigurations, "%d\n")
usb_descriptor_attr(bMaxPacketSize0, "%d\n")
+
+
+/* show if the device is authorized (1) or not (0) */
+static ssize_t usb_dev_authorized_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct usb_device *usb_dev = to_usb_device(dev);
+ return snprintf(buf, PAGE_SIZE, "%u\n", usb_dev->authorized);
+}
+
+
+/*
+ * Authorize a device to be used in the system
+ *
+ * Writing a 0 deauthorizes the device, writing a 1 authorizes it.
+ */
+static ssize_t usb_dev_authorized_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t size)
+{
+ ssize_t result;
+ struct usb_device *usb_dev = to_usb_device(dev);
+ unsigned val;
+ result = sscanf(buf, "%u\n", &val);
+ if (result != 1)
+ result = -EINVAL;
+ else if (val == 0)
+ result = usb_deauthorize_device(usb_dev);
+ else
+ result = usb_authorize_device(usb_dev);
+ return result < 0? result : size;
+}
+
+static DEVICE_ATTR(authorized, 0644,
+ usb_dev_authorized_show, usb_dev_authorized_store);
+
+
static struct attribute *dev_attrs[] = {
/* current configuration's attributes */
&dev_attr_configuration.attr,
@@ -435,6 +473,7 @@ static struct attribute *dev_attrs[] = {
&dev_attr_version.attr,
&dev_attr_maxchild.attr,
&dev_attr_quirks.attr,
+ &dev_attr_authorized.attr,
NULL,
};
static struct attribute_group dev_attr_grp = {
-
To unsubscribe from this list: send the line "unsubscribe git-commits-head" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
