4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2013, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
31 * Author: Nathan Rutman <nathan.rutman@sun.com>
33 * Kernel <-> userspace communication routines.
34 * The definitions below are used in the kernel and userspace.
37 #ifndef __LUSTRE_KERNELCOMM_H__
38 #define __LUSTRE_KERNELCOMM_H__
40 /* For declarations shared with userspace */
41 #include <uapi/linux/lustre/lustre_kernelcomm.h>
44 * enum lustre_device_attrs - Lustre general top-level netlink
45 * attributes that describe lustre
46 * 'devices'. These values are used
47 * to piece togther messages for
48 * sending and receiving.
50 * @LUSTRE_DEVICE_ATTR_UNSPEC: unspecified attribute to catch errors
52 * @LUSTRE_DEVICE_ATTR_HDR: Netlink group this data is for
54 * @LUSTRE_DEVICE_ATTR_INDEX: device number used as an index (NLA_U16)
55 * @LUSTRE_DEVICE_ATTR_STATUS: status of the device (NLA_STRING)
56 * @LUSTRE_DEVICE_ATTR_CLASS: class the device belongs to (NLA_STRING)
57 * @LUSTRE_DEVICE_ATTR_NAME: name of the device (NLA_STRING)
58 * @LUSTRE_DEVICE_ATTR_UUID: UUID of the device (NLA_STRING)
59 * @LUSTRE_DEVICE_ATTR_REFCOUNT: refcount of the device (NLA_U32)
61 enum lustre_device_attrs {
62 LUSTRE_DEVICE_ATTR_UNSPEC = 0,
64 LUSTRE_DEVICE_ATTR_HDR,
65 LUSTRE_DEVICE_ATTR_INDEX,
66 LUSTRE_DEVICE_ATTR_STATUS,
67 LUSTRE_DEVICE_ATTR_CLASS,
68 LUSTRE_DEVICE_ATTR_NAME,
69 LUSTRE_DEVICE_ATTR_UUID,
70 LUSTRE_DEVICE_ATTR_REFCOUNT,
72 __LUSTRE_DEVICE_ATTR_MAX_PLUS_ONE
75 #define LUSTRE_DEVICE_ATTR_MAX (__LUSTRE_DEVICE_ATTR_MAX_PLUS_ONE - 1)
77 /* prototype for callback function on kuc groups */
78 typedef int (*libcfs_kkuc_cb_t)(void *data, void *cb_arg);
81 int libcfs_kkuc_init(void);
82 void libcfs_kkuc_fini(void);
83 int libcfs_kkuc_msg_put(struct file *fp, void *payload);
84 int libcfs_kkuc_group_put(const struct obd_uuid *uuid, int group, void *data);
85 int libcfs_kkuc_group_add(struct file *fp, const struct obd_uuid *uuid, int uid,
86 int group, void *data, size_t data_len);
87 int libcfs_kkuc_group_rem(const struct obd_uuid *uuid, int uid, int group);
88 int libcfs_kkuc_group_foreach(const struct obd_uuid *uuid, int group,
89 libcfs_kkuc_cb_t cb_func, void *cb_arg);
91 #endif /* __LUSTRE_KERNELCOMM_H__ */