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Diffstat (limited to 'fs/ceph/inode.c')
-rw-r--r--fs/ceph/inode.c51
1 files changed, 51 insertions, 0 deletions
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index 22adddb3d051..7b1e93c8a0d2 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -2301,6 +2301,57 @@ int __ceph_do_getattr(struct inode *inode, struct page *locked_page,
return err;
}
+int ceph_do_getvxattr(struct inode *inode, const char *name, void *value,
+ size_t size)
+{
+ struct ceph_fs_client *fsc = ceph_sb_to_client(inode->i_sb);
+ struct ceph_mds_client *mdsc = fsc->mdsc;
+ struct ceph_mds_request *req;
+ int mode = USE_AUTH_MDS;
+ int err;
+ char *xattr_value;
+ size_t xattr_value_len;
+
+ req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_GETVXATTR, mode);
+ if (IS_ERR(req)) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ req->r_path2 = kstrdup(name, GFP_NOFS);
+ if (!req->r_path2) {
+ err = -ENOMEM;
+ goto put;
+ }
+
+ ihold(inode);
+ req->r_inode = inode;
+ err = ceph_mdsc_do_request(mdsc, NULL, req);
+ if (err < 0)
+ goto put;
+
+ xattr_value = req->r_reply_info.xattr_info.xattr_value;
+ xattr_value_len = req->r_reply_info.xattr_info.xattr_value_len;
+
+ dout("do_getvxattr xattr_value_len:%zu, size:%zu\n", xattr_value_len, size);
+
+ err = (int)xattr_value_len;
+ if (size == 0)
+ goto put;
+
+ if (xattr_value_len > size) {
+ err = -ERANGE;
+ goto put;
+ }
+
+ memcpy(value, xattr_value, xattr_value_len);
+put:
+ ceph_mdsc_put_request(req);
+out:
+ dout("do_getvxattr result=%d\n", err);
+ return err;
+}
+
/*
* Check inode permissions. We verify we have a valid value for