rbd: add 'client_addr' sysfs rbd device attribute
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>
diff --git a/Documentation/ABI/testing/sysfs-bus-rbd b/Documentation/ABI/testing/sysfs-bus-rbd
index 2ddd680..273e27f 100644
--- a/Documentation/ABI/testing/sysfs-bus-rbd
+++ b/Documentation/ABI/testing/sysfs-bus-rbd
@@ -43,6 +43,12 @@
Entries under /sys/bus/rbd/devices/<dev-id>/
--------------------------------------------
+client_addr
+
+ The ceph unique client entity_addr_t (address + nonce).
+ The format is <address>:<port>/<nonce>: '1.2.3.4:1234/5678' or
+ '[1:2:3:4:5:6:7:8]:1234/5678'. (August 2016, since 4.9.)
+
client_id
The ceph unique client id that was assigned for this specific session.
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index fd1a9891..69d76c3 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -4592,6 +4592,17 @@
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(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 @@
&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,
diff --git a/include/linux/ceph/libceph.h b/include/linux/ceph/libceph.h
index b4cffff..1816c5e 100644
--- a/include/linux/ceph/libceph.h
+++ b/include/linux/ceph/libceph.h
@@ -264,6 +264,7 @@
void *private,
u64 supported_features,
u64 required_features);
+struct ceph_entity_addr *ceph_client_addr(struct ceph_client *client);
u64 ceph_client_gid(struct ceph_client *client);
extern void ceph_destroy_client(struct ceph_client *client);
extern int __ceph_open_session(struct ceph_client *client,
diff --git a/net/ceph/ceph_common.c b/net/ceph/ceph_common.c
index 8a79217..464e885 100644
--- a/net/ceph/ceph_common.c
+++ b/net/ceph/ceph_common.c
@@ -566,6 +566,12 @@
}
EXPORT_SYMBOL(ceph_print_client_options);
+struct ceph_entity_addr *ceph_client_addr(struct ceph_client *client)
+{
+ return &client->msgr.inst.addr;
+}
+EXPORT_SYMBOL(ceph_client_addr);
+
u64 ceph_client_gid(struct ceph_client *client)
{
return client->monc.auth->global_id;