1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2001 Cluster File Systems, Inc. <braam@clusterfs.com>
6 * This file is part of Lustre, http://www.lustre.org.
8 * Lustre is free software; you can redistribute it and/or
9 * modify it under the terms of version 2 of the GNU General Public
10 * License as published by the Free Software Foundation.
12 * Lustre is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with Lustre; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
30 #define LUSTRE_CFG_VERSION 0x1cf60001
31 #define LUSTRE_CFG_MAX_BUFCOUNT 8
33 #define LCFG_HDR_SIZE(count) \
34 size_round(offsetof (struct lustre_cfg, lcfg_buflens[(count)]))
36 /* If not LCFG_REQUIRED, we can ignore this cmd and go on. */
37 #define LCFG_REQUIRED 0x0001000
39 enum lcfg_command_type {
40 LCFG_ATTACH = 0x00cf001,
41 LCFG_DETACH = 0x00cf002,
42 LCFG_SETUP = 0x00cf003,
43 LCFG_CLEANUP = 0x00cf004,
44 LCFG_ADD_UUID = 0x00cf005,
45 LCFG_DEL_UUID = 0x00cf006,
46 LCFG_MOUNTOPT = 0x00cf007,
47 LCFG_DEL_MOUNTOPT = 0x00cf008,
48 LCFG_SET_TIMEOUT = 0x00cf009,
49 LCFG_SET_UPCALL = 0x00cf00a,
50 LCFG_ADD_CONN = 0x00cf00b,
51 LCFG_DEL_CONN = 0x00cf00c,
52 LCFG_LOV_ADD_OBD = 0x00cf00d,
53 LCFG_LOV_DEL_OBD = 0x00cf00e,
54 LCFG_PARAM = 0x00cf00f,
55 LCFG_MARKER = 0x00cf010,
56 LCFG_LOG_START = 0x00ce011,
57 LCFG_LOG_END = 0x00ce012,
58 LCFG_LOV_ADD_INA = 0x00ce013,
59 LCFG_ADD_MDC = 0x00cf014,
60 LCFG_DEL_MDC = 0x00cf015,
61 LCFG_SEC_FLAVOR = 0x00ce016,
64 struct lustre_cfg_bufs {
65 void *lcfg_buf[LUSTRE_CFG_MAX_BUFCOUNT];
66 uint32_t lcfg_buflen[LUSTRE_CFG_MAX_BUFCOUNT];
67 uint32_t lcfg_bufcount;
70 /* Mountconf transitional hack, should go away after 1.6 */
71 #define LCFG_FLG_MOUNTCONF 0x400
74 uint32_t lcfg_version;
75 uint32_t lcfg_command;
80 uint32_t lcfg_nal; /* not used any more */
82 uint32_t lcfg_bufcount;
83 uint32_t lcfg_buflens[0];
86 #define LUSTRE_CFG_BUFLEN(lcfg, idx) \
87 ((lcfg)->lcfg_bufcount <= (idx) \
89 : (lcfg)->lcfg_buflens[(idx)])
91 static inline void lustre_cfg_bufs_set(struct lustre_cfg_bufs *bufs,
96 if (index >= LUSTRE_CFG_MAX_BUFCOUNT)
101 if (bufs->lcfg_bufcount <= index)
102 bufs->lcfg_bufcount = index + 1;
104 bufs->lcfg_buf[index] = buf;
105 bufs->lcfg_buflen[index] = buflen;
108 static inline void lustre_cfg_bufs_set_string(struct lustre_cfg_bufs *bufs,
112 lustre_cfg_bufs_set(bufs, index, str, str ? strlen(str) + 1 : 0);
115 static inline void lustre_cfg_bufs_reset(struct lustre_cfg_bufs *bufs, char *name)
117 memset((bufs), 0, sizeof(*bufs));
119 lustre_cfg_bufs_set_string(bufs, 0, name);
122 static inline void *lustre_cfg_buf(struct lustre_cfg *lcfg, int index)
127 LASSERT (lcfg != NULL);
128 LASSERT (index >= 0);
130 bufcount = lcfg->lcfg_bufcount;
131 if (index >= bufcount)
134 offset = LCFG_HDR_SIZE(lcfg->lcfg_bufcount);
135 for (i = 0; i < index; i++)
136 offset += size_round(lcfg->lcfg_buflens[i]);
137 return (char *)lcfg + offset;
140 static inline void lustre_cfg_bufs_init(struct lustre_cfg_bufs *bufs,
141 struct lustre_cfg *lcfg)
144 bufs->lcfg_bufcount = lcfg->lcfg_bufcount;
145 for (i = 0; i < bufs->lcfg_bufcount; i++) {
146 bufs->lcfg_buflen[i] = lcfg->lcfg_buflens[i];
147 bufs->lcfg_buf[i] = lustre_cfg_buf(lcfg, i);
151 static inline char *lustre_cfg_string(struct lustre_cfg *lcfg, int index)
155 if (!lcfg->lcfg_buflens[index])
158 s = lustre_cfg_buf(lcfg, index);
162 /* make sure it's NULL terminated, even if this kills a char
163 * of data. Try to use the padding first though.
165 if (s[lcfg->lcfg_buflens[index] - 1] != '\0') {
166 int last = min((int)lcfg->lcfg_buflens[index],
167 size_round(lcfg->lcfg_buflens[index]) - 1);
171 CWARN("Truncated buf %d to '%s' (lost '%c'...)\n",
178 static inline int lustre_cfg_len(uint32_t bufcount, uint32_t *buflens)
184 len = LCFG_HDR_SIZE(bufcount);
185 for (i = 0; i < bufcount; i++)
186 len += size_round(buflens[i]);
188 RETURN(size_round(len));
192 #include <obd_support.h>
194 static inline struct lustre_cfg *lustre_cfg_new(int cmd,
195 struct lustre_cfg_bufs *bufs)
197 struct lustre_cfg *lcfg;
203 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount,
208 lcfg->lcfg_version = LUSTRE_CFG_VERSION;
209 lcfg->lcfg_command = cmd;
210 lcfg->lcfg_bufcount = bufs->lcfg_bufcount;
212 ptr = (char *)lcfg + LCFG_HDR_SIZE(lcfg->lcfg_bufcount);
213 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
214 lcfg->lcfg_buflens[i] = bufs->lcfg_buflen[i];
215 LOGL((char *)bufs->lcfg_buf[i], bufs->lcfg_buflen[i], ptr);
220 static inline void lustre_cfg_free(struct lustre_cfg *lcfg)
224 len = lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens);
231 static inline int lustre_cfg_sanity_check(void *buf, int len)
233 struct lustre_cfg *lcfg = (struct lustre_cfg *)buf;
238 /* check that the first bits of the struct are valid */
239 if (len < LCFG_HDR_SIZE(0))
242 if (lcfg->lcfg_version != LUSTRE_CFG_VERSION)
245 if (lcfg->lcfg_bufcount >= LUSTRE_CFG_MAX_BUFCOUNT)
248 /* check that the buflens are valid */
249 if (len < LCFG_HDR_SIZE(lcfg->lcfg_bufcount))
252 /* make sure all the pointers point inside the data */
253 if (len < lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens))
259 /* default value for nllu/nllg for llite */
260 #define NOBODY_UID 99
261 #define NOBODY_GID 99
262 #define INVALID_UID (-1)
264 #endif // _LUSTRE_CFG_H