diff options
author | Yan, Zheng <zheng.z.yan@intel.com> | 2014-03-06 12:40:32 +0400 |
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committer | Yan, Zheng <zheng.z.yan@intel.com> | 2014-04-03 06:33:53 +0400 |
commit | 19913b4eac4a230dccb548931358398f45dabe4c (patch) | |
tree | ba858471538ae0b32fe42ab1c73bdaf559bbf2fd /fs/ceph/export.c | |
parent | 8996f4f23db735f0f3bab34352188b1ab21d7d7f (diff) | |
download | linux-19913b4eac4a230dccb548931358398f45dabe4c.tar.xz |
ceph: add get_name() NFS export callback
Use the newly introduced LOOKUPNAME MDS request to connect child
inode to its parent directory.
Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
Reviewed-by: Sage Weil <sage@inktank.com>
Diffstat (limited to 'fs/ceph/export.c')
-rw-r--r-- | fs/ceph/export.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/fs/ceph/export.c b/fs/ceph/export.c index eb66408ff236..00d6af6a32ec 100644 --- a/fs/ceph/export.c +++ b/fs/ceph/export.c @@ -202,9 +202,49 @@ static struct dentry *ceph_fh_to_parent(struct super_block *sb, return dentry; } +static int ceph_get_name(struct dentry *parent, char *name, + struct dentry *child) +{ + struct ceph_mds_client *mdsc; + struct ceph_mds_request *req; + int err; + + mdsc = ceph_inode_to_client(child->d_inode)->mdsc; + req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_LOOKUPNAME, + USE_ANY_MDS); + if (IS_ERR(req)) + return PTR_ERR(req); + + mutex_lock(&parent->d_inode->i_mutex); + + req->r_inode = child->d_inode; + ihold(child->d_inode); + req->r_ino2 = ceph_vino(parent->d_inode); + req->r_locked_dir = parent->d_inode; + req->r_num_caps = 2; + err = ceph_mdsc_do_request(mdsc, NULL, req); + + mutex_unlock(&parent->d_inode->i_mutex); + + if (!err) { + struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; + memcpy(name, rinfo->dname, rinfo->dname_len); + name[rinfo->dname_len] = 0; + dout("get_name %p ino %llx.%llx name %s\n", + child, ceph_vinop(child->d_inode), name); + } else { + dout("get_name %p ino %llx.%llx err %d\n", + child, ceph_vinop(child->d_inode), err); + } + + ceph_mdsc_put_request(req); + return err; +} + const struct export_operations ceph_export_ops = { .encode_fh = ceph_encode_fh, .fh_to_dentry = ceph_fh_to_dentry, .fh_to_parent = ceph_fh_to_parent, .get_parent = ceph_get_parent, + .get_name = ceph_get_name, }; |