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, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #pragma ident "%Z%%M% %I% %E% SMI"
28
29 #include <mdb/mdb_modapi.h>
30 #include <sys/types.h>
31 #include <sys/stream.h>
32 #include <sys/strlog.h>
33
34 int
msgbuf(uintptr_t addr,uint_t flags,int argc,const mdb_arg_t * argv)35 msgbuf(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
36 {
37 queue_t q;
38 uintptr_t qp;
39 mblk_t next;
40 mblk_t cont;
41 log_ctl_t lctl;
42 char line[1024];
43 uint_t verbose = FALSE;
44
45 if (!(flags & DCMD_ADDRSPEC)) {
46 if (mdb_readsym(&qp, sizeof (qp), "log_recentq") == -1) {
47 mdb_warn("failed to read log_recent");
48 return (DCMD_ERR);
49 }
50
51 if (mdb_vread(&q, sizeof (q), qp) == -1) {
52 mdb_warn("failed to read queue_t at %p", qp);
53 return (DCMD_ERR);
54 }
55
56 if (mdb_pwalk_dcmd("b_next", "msgbuf", argc, argv,
57 (uintptr_t)q.q_first) == -1) {
58 mdb_warn("can't walk 'b_next'");
59 return (DCMD_ERR);
60 }
61 return (DCMD_OK);
62 }
63
64 if (mdb_getopts(argc, argv,
65 'v', MDB_OPT_SETBITS, TRUE, &verbose, NULL) != argc)
66 return (DCMD_USAGE);
67
68 if (DCMD_HDRSPEC(flags)) {
69 if (verbose)
70 mdb_printf("%<u>%20s %?s %-40s%</u>\n",
71 "TIMESTAMP", "LOGCTL", "MESSAGE");
72 else
73 mdb_printf("%<u>%-70s%</u>\n", "MESSAGE");
74 }
75
76 if (mdb_vread(&next, sizeof (next), addr) == -1) {
77 mdb_warn("failed to read msgb structure at %p", addr);
78 return (DCMD_ERR);
79 }
80
81 if (mdb_vread(&lctl, sizeof (lctl), (uintptr_t)next.b_rptr) == -1) {
82 mdb_warn("failed to read log_ctl_t at %p", next.b_rptr);
83 return (DCMD_ERR);
84 }
85
86 if (mdb_vread(&cont, sizeof (cont), (uintptr_t)next.b_cont) == -1) {
87 mdb_warn("failed to read msgb structure at %p", next.b_cont);
88 return (DCMD_ERR);
89 }
90
91 if (mdb_readstr(line, sizeof (line), (uintptr_t)cont.b_rptr) == -1) {
92 mdb_warn("failed to read string at %p", cont.b_rptr);
93 return (DCMD_ERR);
94 }
95
96 if (verbose)
97 mdb_printf("%Y %?p ", lctl.ttime, next.b_rptr);
98
99 /* skip leading CR to avoid extra lines */
100 if (line[0] == 0x0d)
101 mdb_printf("%s", &line[1]);
102 else
103 mdb_printf("%s", &line[0]);
104
105 return (DCMD_OK);
106 }
107