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 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