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rbd: add 'client_addr' sysfs rbd device attribute

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Export client addr/nonce, so userspace can check if a image is being
blacklisted.

Signed-off-by: Mike Christie <mchristi@redhat.com>
[idryomov@gmail.com: ceph_client_addr(), endianess fix]
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Ilya Dryomov
2016-08-18 18:38:43 +02:00
parent ca7909e8bb
commit 005a07bf0a
4 changed files with 26 additions and 0 deletions
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13
drivers/block/rbd.c
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@@ -4592,6 +4592,17 @@ static ssize_t rbd_minor_show(struct device *dev,
return sprintf(buf, "%d\n", rbd_dev->minor);
}
static ssize_t rbd_client_addr_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct rbd_device *rbd_dev = dev_to_rbd_dev(dev);
struct ceph_entity_addr *client_addr =
ceph_client_addr(rbd_dev->rbd_client->client);
return sprintf(buf, "%pISpc/%u\n", &client_addr->in_addr,
le32_to_cpu(client_addr->nonce));
}
static ssize_t rbd_client_id_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
@@ -4702,6 +4713,7 @@ static DEVICE_ATTR(size, S_IRUGO, rbd_size_show, NULL);
static DEVICE_ATTR(features, S_IRUGO, rbd_features_show, NULL);
static DEVICE_ATTR(major, S_IRUGO, rbd_major_show, NULL);
static DEVICE_ATTR(minor, S_IRUGO, rbd_minor_show, NULL);
static DEVICE_ATTR(client_addr, S_IRUGO, rbd_client_addr_show, NULL);
static DEVICE_ATTR(client_id, S_IRUGO, rbd_client_id_show, NULL);
static DEVICE_ATTR(pool, S_IRUGO, rbd_pool_show, NULL);
static DEVICE_ATTR(pool_id, S_IRUGO, rbd_pool_id_show, NULL);
@@ -4716,6 +4728,7 @@ static struct attribute *rbd_attrs[] = {
&dev_attr_features.attr,
&dev_attr_major.attr,
&dev_attr_minor.attr,
&dev_attr_client_addr.attr,
&dev_attr_client_id.attr,
&dev_attr_pool.attr,
&dev_attr_pool_id.attr,