1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
|
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include "mdinclude.h"
/* array of the sets */
md_set_t mdset[MD_MAXSETS];
mddb_set_t set_dbs[MD_MAXSETS];
/* for the addresses of each set above */
uintptr_t mdset_addrs[MD_MAXSETS];
unit_t md_nunits = 0;
set_t md_nsets = 0;
int snarfed = 0;
int active_sets = 0;
/*
* routines to snarf the metaset information
*
* usage: ::dumpsetaddr [-s setname]
*/
/* ARGSUSED */
int
dumpsetaddr(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
{
int i;
int setno;
char *s_opt = (char *)NULL;
if (mdb_getopts(argc, argv, 's', MDB_OPT_STR, &s_opt,
NULL) != argc) {
/* left over arguments ?? */
return (DCMD_USAGE);
}
if (!snarfed) {
mdb_warn("No sets read in yet - try ::metaset\n");
return (DCMD_ERR);
}
if (argc == 0) { /* dump all sets */
for (i = 0; i < md_nsets; i++) {
if (mdset_addrs[i] != (uintptr_t)0)
mdb_printf("%d %p\n", i, mdset_addrs[i]);
}
} else {
setno = findset(s_opt);
if (setno == -1) {
mdb_warn("no such set: %s\n", s_opt);
return (DCMD_ERR);
}
if (mdset_addrs[setno] != (uintptr_t)0)
mdb_printf("%d %p\n", setno,
mdset_addrs[setno]);
}
return (DCMD_OK);
}
/*
* Function: snarf_ui_anchor
* Purpose: to read in the s_ui part of a metaset.
* Returns: <n> - number of configured metadevices
* -1 - not configured
*/
int
snarf_ui_anchor(int i)
{
int j;
int num_found = 0;
void **ptr = mdset[i].s_ui;
void *addr;
for (j = 0; j < md_nunits; j++) {
if (mdb_vread(&addr, sizeof (void *), (uintptr_t)ptr) == -1) {
ptr++;
continue;
}
if (addr != NULL) {
num_found++;
}
ptr++;
}
return (num_found);
}
/*
* Function: snarf_sets
* Purpose: Entry point into the module that reads the kernel's version
* of the SVM configuration.
* First of all populates the mdset array and then for each
* component that makes up an "md_set_t" reads it in, via calls
* to other functions.
*/
int
snarf_sets(void)
{
GElf_Sym setsym;
GElf_Sym nmdsym;
GElf_Sym mdsetsym;
int i;
size_t offset = 0;
if (snarfed)
return (DCMD_OK);
/* find the SVM hook - md_set */
if (mdb_lookup_by_name("md_set", &setsym) == -1) {
mdb_warn("SVM is not configured on this machine\n");
return (DCMD_ERR);
}
/* find out how many metadevices are configured per set */
if (mdb_lookup_by_name("md_nunits", &nmdsym) == -1) {
mdb_warn("unable to find md_nunits\n");
return (DCMD_ERR);
}
if (mdb_vread(&md_nunits, sizeof (unit_t), nmdsym.st_value) == -1) {
mdb_warn("failed to read md_nunits at %p\n", nmdsym.st_value);
return (DCMD_ERR);
}
if (mdb_lookup_by_name("md_nsets", &mdsetsym) == -1) {
mdb_warn("unable to find md_nsets\n");
return (DCMD_ERR);
}
if (mdb_vread(&md_nsets, sizeof (set_t), mdsetsym.st_value) == -1) {
mdb_warn("failed to read md_nsets at %p\n", mdsetsym.st_value);
return (DCMD_ERR);
}
if (md_verbose) {
mdb_printf("mdset array addr: 0x%lx size is: 0x%lx\n",
(uintptr_t)setsym.st_value, sizeof (md_set_t));
}
offset = setsym.st_value;
for (i = 0; i < md_nsets; i++) {
if (mdb_vread(&mdset[i], sizeof (md_set_t), offset) == -1) {
mdb_warn("failed to read md_set_t at 0x%lx\n",
(uintptr_t)(setsym.st_value + offset));
}
/* Should check the status flags */
if (mdset[i].s_status & MD_SET_NM_LOADED) {
if (md_verbose)
mdb_printf("Set %d (0x%lx) has a name space\n",
i, (uintptr_t)(setsym.st_value + offset));
} else {
offset += sizeof (md_set_t);
continue;
}
if (mdb_vread(&set_dbs[i], sizeof (mddb_set_t),
(uintptr_t)mdset[i].s_db) == -1) {
if (mdset[i].s_db != 0) {
mdb_warn("failed to read mddb_set_t at 0x%p\n",
mdset[i].s_db);
return (DCMD_ERR);
} else {
mdb_warn("%d - no set configured\n", i);
return (DCMD_ERR);
}
}
active_sets++;
mdset_addrs[i] = (uintptr_t)(offset);
(void) snarf_ui_anchor(i);
/* have the set now read in the various bits and pieces */
offset += sizeof (md_set_t);
}
snarfed = 1;
if (md_verbose) {
mdb_printf("Number of active sets: %d\n", active_sets);
mdb_printf("Max number of metadevices: %u\n", md_nunits);
mdb_printf("Max number of sets: %u\n", md_nsets);
}
return (DCMD_OK);
}
|
