From 005a07bf0a92e7f0e73fc9a6c9acc992c5dbd00c Mon Sep 17 00:00:00 2001 From: Ilya Dryomov Date: Thu, 18 Aug 2016 18:38:43 +0200 Subject: 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 [idryomov@gmail.com: ceph_client_addr(), endianess fix] Signed-off-by: Ilya Dryomov 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 @@ Description: Available only if rbd module is inserted with single_major Entries under /sys/bus/rbd/devices// -------------------------------------------- +client_addr + + The ceph unique client entity_addr_t (address + nonce). + The format is
:/: '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 @@ 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, 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 @@ extern struct ceph_client *ceph_create_client(struct ceph_options *opt, 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 @@ int ceph_print_client_options(struct seq_file *m, struct ceph_client *client) } 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; -- cgit v0.10.2