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) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2012, 2014, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
33 #ifndef _UAPI_LUSTRE_CFG_H
34 #define _UAPI_LUSTRE_CFG_H
36 #include <linux/kernel.h>
37 #include <lustre/lustre_user.h>
39 /* Handle older distros */
40 #ifndef __ALIGN_KERNEL
41 # define __ALIGN_KERNEL(x, a) __ALIGN_KERNEL_MASK(x, (typeof(x))(a) - 1)
42 # define __ALIGN_KERNEL_MASK(x, mask) (((x) + (mask)) & ~(mask))
54 #define LUSTRE_CFG_VERSION 0x1cf60001
55 #define LUSTRE_CFG_MAX_BUFCOUNT 8
57 #define LCFG_HDR_SIZE(count) \
58 __ALIGN_KERNEL(offsetof(struct lustre_cfg, lcfg_buflens[(count)]), 8)
60 /** If the LCFG_REQUIRED bit is set in a configuration command,
61 * then the client is required to understand this parameter
62 * in order to mount the filesystem. If it does not understand
63 * a REQUIRED command the client mount will fail.
65 #define LCFG_REQUIRED 0x0001000
67 enum lcfg_command_type {
68 LCFG_ATTACH = 0x00cf001, /**< create a new obd instance */
69 LCFG_DETACH = 0x00cf002, /**< destroy obd instance */
70 LCFG_SETUP = 0x00cf003, /**< call type-specific setup */
71 LCFG_CLEANUP = 0x00cf004, /**< call type-specific cleanup
73 LCFG_ADD_UUID = 0x00cf005, /**< add a nid to a niduuid */
74 LCFG_DEL_UUID = 0x00cf006, /**< remove a nid from
77 LCFG_MOUNTOPT = 0x00cf007, /**< create a profile
80 LCFG_DEL_MOUNTOPT = 0x00cf008, /**< destroy a profile */
81 LCFG_SET_TIMEOUT = 0x00cf009, /**< set obd_timeout */
82 LCFG_SET_UPCALL = 0x00cf00a, /**< deprecated */
83 LCFG_ADD_CONN = 0x00cf00b, /**< add a failover niduuid to
86 LCFG_DEL_CONN = 0x00cf00c, /**< remove a failover niduuid */
87 LCFG_LOV_ADD_OBD = 0x00cf00d, /**< add an osc to a lov */
88 LCFG_LOV_DEL_OBD = 0x00cf00e, /**< remove an osc from a lov */
89 LCFG_PARAM = 0x00cf00f, /**< set a proc parameter */
90 LCFG_MARKER = 0x00cf010, /**< metadata about next
93 LCFG_LOG_START = 0x00ce011, /**< mgc only, process a
96 LCFG_LOG_END = 0x00ce012, /**< stop processing updates */
97 LCFG_LOV_ADD_INA = 0x00ce013, /**< like LOV_ADD_OBD,
100 LCFG_ADD_MDC = 0x00cf014, /**< add an mdc to a lmv */
101 LCFG_DEL_MDC = 0x00cf015, /**< remove an mdc from a lmv */
102 LCFG_SPTLRPC_CONF = 0x00ce016, /**< security */
103 LCFG_POOL_NEW = 0x00ce020, /**< create an ost pool name */
104 LCFG_POOL_ADD = 0x00ce021, /**< add an ost to a pool */
105 LCFG_POOL_REM = 0x00ce022, /**< remove an ost from a pool */
106 LCFG_POOL_DEL = 0x00ce023, /**< destroy an ost pool name */
107 LCFG_SET_LDLM_TIMEOUT = 0x00ce030, /**< set ldlm_timeout */
108 LCFG_PRE_CLEANUP = 0x00cf031, /**< call type-specific pre
111 LCFG_SET_PARAM = 0x00ce032, /**< use set_param syntax to set
114 LCFG_NODEMAP_ADD = 0x00ce040, /**< create a cluster */
115 LCFG_NODEMAP_DEL = 0x00ce041, /**< destroy a cluster */
116 LCFG_NODEMAP_ADD_RANGE = 0x00ce042, /**< add a nid range */
117 LCFG_NODEMAP_DEL_RANGE = 0x00ce043, /**< delete an nid range */
118 LCFG_NODEMAP_ADD_UIDMAP = 0x00ce044, /**< add a uidmap */
119 LCFG_NODEMAP_DEL_UIDMAP = 0x00ce045, /**< delete a uidmap */
120 LCFG_NODEMAP_ADD_GIDMAP = 0x00ce046, /**< add a gidmap */
121 LCFG_NODEMAP_DEL_GIDMAP = 0x00ce047, /**< delete a gidmap */
122 LCFG_NODEMAP_ACTIVATE = 0x00ce048, /**< activate cluster
125 LCFG_NODEMAP_ADMIN = 0x00ce049, /**< allow cluster to use id 0 */
126 LCFG_NODEMAP_TRUSTED = 0x00ce050, /**< trust a clusters ids */
127 LCFG_NODEMAP_SQUASH_UID = 0x00ce051, /**< default map uid */
128 LCFG_NODEMAP_SQUASH_GID = 0x00ce052, /**< default map gid */
129 LCFG_NODEMAP_ADD_SHKEY = 0x00ce053, /**< add shared key to cluster */
130 LCFG_NODEMAP_DEL_SHKEY = 0x00ce054, /**< delete shared key from
133 LCFG_NODEMAP_TEST_NID = 0x00ce055, /**< test for nodemap
136 LCFG_NODEMAP_TEST_ID = 0x00ce056, /**< test uid/gid mapping */
137 LCFG_NODEMAP_SET_FILESET = 0x00ce057, /**< set fileset */
138 LCFG_NODEMAP_DENY_UNKNOWN = 0x00ce058, /**< deny squashed nodemap
141 LCFG_NODEMAP_MAP_MODE = 0x00ce059, /**< set the mapping mode */
144 struct lustre_cfg_bufs {
145 void *lcfg_buf[LUSTRE_CFG_MAX_BUFCOUNT];
146 __u32 lcfg_buflen[LUSTRE_CFG_MAX_BUFCOUNT];
157 __u32 lcfg_nal; /* not used any more */
160 __u32 lcfg_buflens[0];
163 enum cfg_record_type {
164 PORTALS_CFG_TYPE = 1,
165 LUSTRE_CFG_TYPE = 123,
168 #define LUSTRE_CFG_BUFLEN(lcfg, idx) \
169 ((lcfg)->lcfg_bufcount <= (idx) ? 0 : (lcfg)->lcfg_buflens[(idx)])
171 static inline void lustre_cfg_bufs_set(struct lustre_cfg_bufs *bufs,
172 __u32 index, void *buf, __u32 buflen)
174 if (index >= LUSTRE_CFG_MAX_BUFCOUNT)
180 if (bufs->lcfg_bufcount <= index)
181 bufs->lcfg_bufcount = index + 1;
183 bufs->lcfg_buf[index] = buf;
184 bufs->lcfg_buflen[index] = buflen;
187 static inline void lustre_cfg_bufs_set_string(struct lustre_cfg_bufs *bufs,
188 __u32 index, char *str)
190 lustre_cfg_bufs_set(bufs, index, str, str ? strlen(str) + 1 : 0);
193 static inline void lustre_cfg_bufs_reset(struct lustre_cfg_bufs *bufs,
196 memset((bufs), 0, sizeof(*bufs));
198 lustre_cfg_bufs_set_string(bufs, 0, name);
201 static inline void *lustre_cfg_buf(struct lustre_cfg *lcfg, __u32 index)
210 bufcount = lcfg->lcfg_bufcount;
211 if (index >= bufcount)
214 offset = LCFG_HDR_SIZE(lcfg->lcfg_bufcount);
215 for (i = 0; i < index; i++)
216 offset += __ALIGN_KERNEL(lcfg->lcfg_buflens[i], 8);
217 return (char *)lcfg + offset;
220 static inline void lustre_cfg_bufs_init(struct lustre_cfg_bufs *bufs,
221 struct lustre_cfg *lcfg)
225 bufs->lcfg_bufcount = lcfg->lcfg_bufcount;
226 for (i = 0; i < bufs->lcfg_bufcount; i++) {
227 bufs->lcfg_buflen[i] = lcfg->lcfg_buflens[i];
228 bufs->lcfg_buf[i] = lustre_cfg_buf(lcfg, i);
232 static inline __u32 lustre_cfg_len(__u32 bufcount, __u32 *buflens)
237 len = LCFG_HDR_SIZE(bufcount);
238 for (i = 0; i < bufcount; i++)
239 len += __ALIGN_KERNEL(buflens[i], 8);
241 return __ALIGN_KERNEL(len, 8);
244 static inline void lustre_cfg_init(struct lustre_cfg *lcfg, int cmd,
245 struct lustre_cfg_bufs *bufs)
250 lcfg->lcfg_version = LUSTRE_CFG_VERSION;
251 lcfg->lcfg_command = cmd;
252 lcfg->lcfg_bufcount = bufs->lcfg_bufcount;
254 ptr = (char *)lcfg + LCFG_HDR_SIZE(lcfg->lcfg_bufcount);
255 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
256 lcfg->lcfg_buflens[i] = bufs->lcfg_buflen[i];
257 if (bufs->lcfg_buf[i]) {
258 memcpy(ptr, bufs->lcfg_buf[i], bufs->lcfg_buflen[i]);
259 ptr += __ALIGN_KERNEL(bufs->lcfg_buflen[i], 8);
264 static inline int lustre_cfg_sanity_check(void *buf, size_t len)
266 struct lustre_cfg *lcfg = (struct lustre_cfg *)buf;
271 /* check that the first bits of the struct are valid */
272 if (len < LCFG_HDR_SIZE(0))
275 if (lcfg->lcfg_version != LUSTRE_CFG_VERSION)
278 if (lcfg->lcfg_bufcount >= LUSTRE_CFG_MAX_BUFCOUNT)
281 /* check that the buflens are valid */
282 if (len < LCFG_HDR_SIZE(lcfg->lcfg_bufcount))
285 /* make sure all the pointers point inside the data */
286 if (len < lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens))
294 #endif /* _UAPI_LUSTRE_CFG_H */