1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
44 #define LUSTRE_CFG_VERSION 0x1cf60001
45 #define LUSTRE_CFG_MAX_BUFCOUNT 8
47 #define LCFG_HDR_SIZE(count) \
48 size_round(offsetof (struct lustre_cfg, lcfg_buflens[(count)]))
50 /* If not LCFG_REQUIRED, we can ignore this cmd and go on. */
51 #define LCFG_REQUIRED 0x0001000
53 enum lcfg_command_type {
54 LCFG_ATTACH = 0x00cf001,
55 LCFG_DETACH = 0x00cf002,
56 LCFG_SETUP = 0x00cf003,
57 LCFG_CLEANUP = 0x00cf004,
58 LCFG_ADD_UUID = 0x00cf005,
59 LCFG_DEL_UUID = 0x00cf006,
60 LCFG_MOUNTOPT = 0x00cf007,
61 LCFG_DEL_MOUNTOPT = 0x00cf008,
62 LCFG_SET_TIMEOUT = 0x00cf009,
63 LCFG_SET_UPCALL = 0x00cf00a,
64 LCFG_ADD_CONN = 0x00cf00b,
65 LCFG_DEL_CONN = 0x00cf00c,
66 LCFG_LOV_ADD_OBD = 0x00cf00d,
67 LCFG_LOV_DEL_OBD = 0x00cf00e,
68 LCFG_PARAM = 0x00cf00f,
69 LCFG_MARKER = 0x00cf010,
70 LCFG_LOG_START = 0x00ce011,
71 LCFG_LOG_END = 0x00ce012,
72 LCFG_LOV_ADD_INA = 0x00ce013,
73 LCFG_POOL_NEW = 0x00ce020,
74 LCFG_POOL_ADD = 0x00ce021,
75 LCFG_POOL_REM = 0x00ce022,
76 LCFG_POOL_DEL = 0x00ce023,
79 struct lustre_cfg_bufs {
80 void *lcfg_buf[LUSTRE_CFG_MAX_BUFCOUNT];
81 __u32 lcfg_buflen[LUSTRE_CFG_MAX_BUFCOUNT];
85 /* Mountconf transitional hack, should go away after 1.6 */
86 #define LCFG_FLG_MOUNTCONF 0x400
95 __u32 lcfg_nal; /* not used any more */
98 __u32 lcfg_buflens[0];
101 #define LUSTRE_CFG_BUFLEN(lcfg, idx) \
102 ((lcfg)->lcfg_bufcount <= (idx) \
104 : (lcfg)->lcfg_buflens[(idx)])
106 static inline void lustre_cfg_bufs_set(struct lustre_cfg_bufs *bufs,
111 if (index >= LUSTRE_CFG_MAX_BUFCOUNT)
116 if (bufs->lcfg_bufcount <= index)
117 bufs->lcfg_bufcount = index + 1;
119 bufs->lcfg_buf[index] = buf;
120 bufs->lcfg_buflen[index] = buflen;
123 static inline void lustre_cfg_bufs_set_string(struct lustre_cfg_bufs *bufs,
127 lustre_cfg_bufs_set(bufs, index, str, str ? strlen(str) + 1 : 0);
130 static inline void lustre_cfg_bufs_reset(struct lustre_cfg_bufs *bufs, char *name)
132 memset((bufs), 0, sizeof(*bufs));
134 lustre_cfg_bufs_set_string(bufs, 0, name);
137 static inline void *lustre_cfg_buf(struct lustre_cfg *lcfg, int index)
142 LASSERT (lcfg != NULL);
143 LASSERT (index >= 0);
145 bufcount = lcfg->lcfg_bufcount;
146 if (index >= bufcount)
149 offset = LCFG_HDR_SIZE(lcfg->lcfg_bufcount);
150 for (i = 0; i < index; i++)
151 offset += size_round(lcfg->lcfg_buflens[i]);
152 return (char *)lcfg + offset;
155 static inline void lustre_cfg_bufs_init(struct lustre_cfg_bufs *bufs,
156 struct lustre_cfg *lcfg)
159 bufs->lcfg_bufcount = lcfg->lcfg_bufcount;
160 for (i = 0; i < bufs->lcfg_bufcount; i++) {
161 bufs->lcfg_buflen[i] = lcfg->lcfg_buflens[i];
162 bufs->lcfg_buf[i] = lustre_cfg_buf(lcfg, i);
166 static inline char *lustre_cfg_string(struct lustre_cfg *lcfg, int index)
170 if (!lcfg->lcfg_buflens[index])
173 s = lustre_cfg_buf(lcfg, index);
177 /* make sure it's NULL terminated, even if this kills a char
178 * of data. Try to use the padding first though.
180 if (s[lcfg->lcfg_buflens[index] - 1] != '\0') {
181 int last = min((int)lcfg->lcfg_buflens[index],
182 size_round(lcfg->lcfg_buflens[index]) - 1);
186 CWARN("Truncated buf %d to '%s' (lost '%c'...)\n",
193 static inline int lustre_cfg_len(__u32 bufcount, __u32 *buflens)
199 len = LCFG_HDR_SIZE(bufcount);
200 for (i = 0; i < bufcount; i++)
201 len += size_round(buflens[i]);
203 RETURN(size_round(len));
207 #include <obd_support.h>
209 static inline struct lustre_cfg *lustre_cfg_new(int cmd,
210 struct lustre_cfg_bufs *bufs)
212 struct lustre_cfg *lcfg;
218 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount,
221 RETURN(ERR_PTR(-ENOMEM));
223 lcfg->lcfg_version = LUSTRE_CFG_VERSION;
224 lcfg->lcfg_command = cmd;
225 lcfg->lcfg_bufcount = bufs->lcfg_bufcount;
227 ptr = (char *)lcfg + LCFG_HDR_SIZE(lcfg->lcfg_bufcount);
228 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
229 lcfg->lcfg_buflens[i] = bufs->lcfg_buflen[i];
230 LOGL((char *)bufs->lcfg_buf[i], bufs->lcfg_buflen[i], ptr);
235 static inline void lustre_cfg_free(struct lustre_cfg *lcfg)
239 len = lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens);
246 static inline int lustre_cfg_sanity_check(void *buf, int len)
248 struct lustre_cfg *lcfg = (struct lustre_cfg *)buf;
253 /* check that the first bits of the struct are valid */
254 if (len < LCFG_HDR_SIZE(0))
257 if (lcfg->lcfg_version != LUSTRE_CFG_VERSION)
260 if (lcfg->lcfg_bufcount >= LUSTRE_CFG_MAX_BUFCOUNT)
263 /* check that the buflens are valid */
264 if (len < LCFG_HDR_SIZE(lcfg->lcfg_bufcount))
267 /* make sure all the pointers point inside the data */
268 if (len < lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens))
274 #endif // _LUSTRE_CFG_H