1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26 #include <mdb/mdb_modapi.h>
27
28 #include <sys/types.h>
29 #include <sys/uio.h>
30 #include <sys/vnode.h>
31 #include <sys/fs/ufs_log.h>
32 #include "ufs_cmds.h"
33
34
35 typedef struct ufslogmap_walk_data {
36 mapentry_t me;
37 mapentry_t *start_addr;
38 mapentry_t *prev_addr;
39 } ufslogmap_walk_data_t;
40
41 /*
42 * Ensure we are started with a user specified address.
43 * We also allocate a ufslogmap_walk_data_t for storage,
44 * and save this using the walk_data pointer.
45 */
46 int
ufslogmap_walk_init(mdb_walk_state_t * wsp)47 ufslogmap_walk_init(mdb_walk_state_t *wsp)
48 {
49 ufslogmap_walk_data_t *uw;
50
51 if (wsp->walk_addr == 0) {
52 mdb_warn("must specify an address\n");
53 return (WALK_ERR);
54 }
55
56 uw = mdb_zalloc(sizeof (ufslogmap_walk_data_t), UM_SLEEP | UM_GC);
57
58 uw->start_addr = (mapentry_t *)wsp->walk_addr;
59 wsp->walk_data = uw;
60 return (WALK_NEXT);
61 }
62
63 /*
64 * Routine to step through one element of the list.
65 */
66 int
ufslogmap_walk_step(mdb_walk_state_t * wsp)67 ufslogmap_walk_step(mdb_walk_state_t *wsp)
68 {
69 ufslogmap_walk_data_t *uw = wsp->walk_data;
70 uintptr_t walk_addr = wsp->walk_addr;
71
72 /*
73 * Read the mapentry at the current walk address
74 */
75 if (mdb_vread(&uw->me, sizeof (mapentry_t), walk_addr) == -1) {
76 mdb_warn("failed to read mapentry_t at %p", walk_addr);
77 return (WALK_DONE);
78 }
79
80 /*
81 * Check for empty list.
82 */
83 if (uw->me.me_next == uw->me.me_prev) {
84 return (WALK_DONE);
85 }
86
87 /*
88 * Check for end of list.
89 */
90 if (uw->me.me_next == uw->start_addr) {
91 return (WALK_DONE);
92 }
93
94 /*
95 * Check for proper linkage
96 */
97 if (uw->prev_addr && (uw->me.me_prev != uw->prev_addr)) {
98 mdb_warn("invalid linkage mapentry_t at %p", walk_addr);
99 return (WALK_DONE);
100 }
101 uw->prev_addr = (mapentry_t *)walk_addr;
102
103 /*
104 * Save next address and call callback with current address
105 */
106 wsp->walk_addr = (uintptr_t)uw->me.me_next;
107 return (wsp->walk_callback(walk_addr, wsp->walk_data,
108 wsp->walk_cbdata));
109 }
110
111 static const char *
delta2str(delta_t delta_type)112 delta2str(delta_t delta_type)
113 {
114 switch (delta_type) {
115 case DT_NONE: return ("none");
116 case DT_SB: return ("sb");
117 case DT_CG: return ("cg");
118 case DT_SI: return ("si");
119 case DT_AB: return ("ab");
120 case DT_ABZERO: return ("abzero");
121 case DT_DIR: return ("dir");
122 case DT_INODE: return ("inode");
123 case DT_FBI: return ("fbi");
124 case DT_QR: return ("quota");
125 case DT_COMMIT: return ("commit");
126 case DT_CANCEL: return ("cancel");
127 case DT_BOT: return ("trans");
128 case DT_EOT: return ("etrans");
129 case DT_UD: return ("udata");
130 case DT_SUD: return ("sudata");
131 case DT_SHAD: return ("shadow");
132 default: return ("???");
133 }
134 }
135
136 /* ARGSUSED */
137 int
mapentry_dcmd(uintptr_t addr,uint_t flags,int argc,const mdb_arg_t * argv)138 mapentry_dcmd(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
139 {
140 mapentry_t me;
141
142 if (!(flags & DCMD_ADDRSPEC))
143 return (DCMD_USAGE);
144
145 if (DCMD_HDRSPEC(flags)) {
146 mdb_printf("%<u>%?s %6s %8s %8s %s%</u>\n",
147 "ADDR", "TYPE", "SIZE", "TRANS", "HANDLER");
148 }
149
150 if (mdb_vread(&me, sizeof (me), addr) == -1) {
151 mdb_warn("couldn't read ufslog mapentry at %p", addr);
152 return (DCMD_ABORT);
153 }
154
155 /*
156 * Validate mapentry
157 */
158 if (me.me_delta.d_typ >= DT_MAX) {
159 mdb_warn("Invalid delta type for mapentry at %p", addr);
160 return (DCMD_ABORT);
161 }
162
163 mdb_printf("%0?p %6s %8x %8x %a\n",
164 addr,
165 delta2str(me.me_delta.d_typ),
166 me.me_delta.d_nb,
167 me.me_tid,
168 me.me_func);
169
170 return (DCMD_OK);
171 }
172
173 typedef struct {
174 uint64_t nentries; /* number of mapentries */
175 uint64_t totalsize; /* total number of bytes */
176 uint32_t transid; /* first transaction id */
177 int transdiff; /* transaction different */
178 uint32_t delta_cnt[DT_MAX]; /* count of each delta */
179 uint64_t delta_sum[DT_MAX]; /* total number of bytes for delta */
180 } mapstats_t;
181
182 /* ARGSUSED */
183 int
mapadd(uintptr_t * addr,ufslogmap_walk_data_t * uw,mapstats_t * msp)184 mapadd(uintptr_t *addr, ufslogmap_walk_data_t *uw, mapstats_t *msp)
185 {
186 if (msp->nentries == 0) {
187 msp->transid = uw->me.me_tid;
188 } else {
189 if (msp->transid != uw->me.me_tid) {
190 msp->transdiff = TRUE;
191 }
192 }
193 msp->nentries++;
194 msp->totalsize += uw->me.me_nb;
195 if (uw->me.me_dt >= DT_MAX) {
196 mdb_warn("Invalid delta type for mapentry at %p", addr);
197 } else {
198 msp->delta_cnt[uw->me.me_dt]++;
199 msp->delta_sum[uw->me.me_dt] += uw->me.me_nb;
200 }
201 return (WALK_NEXT);
202 }
203
204 /*ARGSUSED*/
205 int
mapstats_dcmd(uintptr_t addr,uint_t flags,int argc,const mdb_arg_t * argv)206 mapstats_dcmd(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
207 {
208 mapstats_t *msp;
209 int i;
210
211 if (!(flags & DCMD_ADDRSPEC))
212 return (DCMD_USAGE);
213
214 msp = mdb_zalloc(sizeof (mapstats_t), UM_SLEEP | UM_GC);
215 msp->transdiff = FALSE;
216
217 if (mdb_pwalk("ufslogmap", (mdb_walk_cb_t)(uintptr_t)mapadd,
218 msp, addr) == -1) {
219 mdb_warn("can't walk ufslogmap for stats");
220 return (DCMD_ERR);
221 }
222
223 mdb_printf("Number of entries 0x%llx\n", msp->nentries);
224 mdb_printf("Total map size 0x%llx\n", msp->totalsize);
225 if (msp->transdiff) {
226 mdb_printf("Multiple transactions\n");
227 } else {
228 mdb_printf("All the same transaction id = %d\n", msp->transid);
229 }
230 if (msp->nentries) {
231 mdb_printf("%<u>delta count(hex) avsize(hex)%</u>\n");
232 for (i = 0; i < DT_MAX; i++) {
233 if (msp->delta_cnt[i]) {
234 mdb_printf("%6s %10X %10X\n",
235 delta2str(i), msp->delta_cnt[i],
236 msp->delta_sum[i] / msp->delta_cnt[i]);
237 }
238 }
239 }
240 return (DCMD_OK);
241 }
242