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,
61 struct lustre_cfg_bufs {
62 void *lcfg_buf[LUSTRE_CFG_MAX_BUFCOUNT];
63 uint32_t lcfg_buflen[LUSTRE_CFG_MAX_BUFCOUNT];
64 uint32_t lcfg_bufcount;
67 /* Mountconf transitional hack, should go away after 1.6 */
68 #define LCFG_FLG_MOUNTCONF 0x400
71 uint32_t lcfg_version;
72 uint32_t lcfg_command;
77 uint32_t lcfg_nal; /* not used any more */
79 uint32_t lcfg_bufcount;
80 uint32_t lcfg_buflens[0];
83 #define LUSTRE_CFG_BUFLEN(lcfg, idx) \
84 ((lcfg)->lcfg_bufcount <= (idx) \
86 : (lcfg)->lcfg_buflens[(idx)])
88 static inline void lustre_cfg_bufs_set(struct lustre_cfg_bufs *bufs,
93 if (index >= LUSTRE_CFG_MAX_BUFCOUNT)
98 if (bufs->lcfg_bufcount <= index)
99 bufs->lcfg_bufcount = index + 1;
101 bufs->lcfg_buf[index] = buf;
102 bufs->lcfg_buflen[index] = buflen;
105 static inline void lustre_cfg_bufs_set_string(struct lustre_cfg_bufs *bufs,
109 lustre_cfg_bufs_set(bufs, index, str, str ? strlen(str) + 1 : 0);
112 static inline void lustre_cfg_bufs_reset(struct lustre_cfg_bufs *bufs, char *name)
114 memset((bufs), 0, sizeof(*bufs));
116 lustre_cfg_bufs_set_string(bufs, 0, name);
119 static inline void *lustre_cfg_buf(struct lustre_cfg *lcfg, int index)
124 LASSERT (lcfg != NULL);
125 LASSERT (index >= 0);
127 bufcount = lcfg->lcfg_bufcount;
128 if (index >= bufcount)
131 offset = LCFG_HDR_SIZE(lcfg->lcfg_bufcount);
132 for (i = 0; i < index; i++)
133 offset += size_round(lcfg->lcfg_buflens[i]);
134 return (char *)lcfg + offset;
137 static inline void lustre_cfg_bufs_init(struct lustre_cfg_bufs *bufs,
138 struct lustre_cfg *lcfg)
141 bufs->lcfg_bufcount = lcfg->lcfg_bufcount;
142 for (i = 0; i < bufs->lcfg_bufcount; i++) {
143 bufs->lcfg_buflen[i] = lcfg->lcfg_buflens[i];
144 bufs->lcfg_buf[i] = lustre_cfg_buf(lcfg, i);
148 static inline char *lustre_cfg_string(struct lustre_cfg *lcfg, int index)
152 if (!lcfg->lcfg_buflens[index])
155 s = lustre_cfg_buf(lcfg, index);
159 /* make sure it's NULL terminated, even if this kills a char
160 * of data. Try to use the padding first though.
162 if (s[lcfg->lcfg_buflens[index] - 1] != '\0') {
163 int last = min((int)lcfg->lcfg_buflens[index],
164 size_round(lcfg->lcfg_buflens[index]) - 1);
168 CWARN("Truncated buf %d to '%s' (lost '%c'...)\n",
175 static inline int lustre_cfg_len(uint32_t bufcount, uint32_t *buflens)
181 len = LCFG_HDR_SIZE(bufcount);
182 for (i = 0; i < bufcount; i++)
183 len += size_round(buflens[i]);
185 RETURN(size_round(len));
189 #include <obd_support.h>
191 static inline struct lustre_cfg *lustre_cfg_new(int cmd,
192 struct lustre_cfg_bufs *bufs)
194 struct lustre_cfg *lcfg;
200 OBD_ALLOC(lcfg, lustre_cfg_len(bufs->lcfg_bufcount,
205 lcfg->lcfg_version = LUSTRE_CFG_VERSION;
206 lcfg->lcfg_command = cmd;
207 lcfg->lcfg_bufcount = bufs->lcfg_bufcount;
209 ptr = (char *)lcfg + LCFG_HDR_SIZE(lcfg->lcfg_bufcount);
210 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
211 lcfg->lcfg_buflens[i] = bufs->lcfg_buflen[i];
212 LOGL((char *)bufs->lcfg_buf[i], bufs->lcfg_buflen[i], ptr);
217 static inline void lustre_cfg_free(struct lustre_cfg *lcfg)
221 len = lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens);
228 static inline int lustre_cfg_sanity_check(void *buf, int len)
230 struct lustre_cfg *lcfg = (struct lustre_cfg *)buf;
235 /* check that the first bits of the struct are valid */
236 if (len < LCFG_HDR_SIZE(0))
239 if (lcfg->lcfg_version != LUSTRE_CFG_VERSION)
242 if (lcfg->lcfg_bufcount >= LUSTRE_CFG_MAX_BUFCOUNT)
245 /* check that the buflens are valid */
246 if (len < LCFG_HDR_SIZE(lcfg->lcfg_bufcount))
249 /* make sure all the pointers point inside the data */
250 if (len < lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens))
256 #endif // _LUSTRE_CFG_H