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/*
* 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 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
* Copyright 2023 RackTop Systems, Inc.
*/
#include <mdb/mdb_modapi.h>
#include <sys/types.h>
#include <sys/stream.h>
#include <sys/strlog.h>
int
msgbuf(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
{
queue_t q;
uintptr_t qp;
mblk_t next;
mblk_t cont;
log_ctl_t lctl;
char line[1024];
uint_t verbose = FALSE;
uint_t delta = FALSE;
uint_t abstime = FALSE;
if (!(flags & DCMD_ADDRSPEC)) {
if (mdb_readsym(&qp, sizeof (qp), "log_recentq") == -1) {
mdb_warn("failed to read log_recent");
return (DCMD_ERR);
}
if (mdb_vread(&q, sizeof (q), qp) == -1) {
mdb_warn("failed to read queue_t at %p", qp);
return (DCMD_ERR);
}
if (mdb_pwalk_dcmd("b_next", "msgbuf", argc, argv,
(uintptr_t)q.q_first) == -1) {
mdb_warn("can't walk 'b_next'");
return (DCMD_ERR);
}
return (DCMD_OK);
}
if (mdb_getopts(argc, argv,
't', MDB_OPT_SETBITS, TRUE, &delta,
'T', MDB_OPT_SETBITS, TRUE, &abstime,
'v', MDB_OPT_SETBITS, TRUE, &verbose, NULL) != argc)
return (DCMD_USAGE);
/* For backwards compatability, -v implies -T */
if (verbose)
abstime = TRUE;
if (DCMD_HDRSPEC(flags)) {
int amt = 80;
mdb_printf("%<u>");
if (abstime) {
mdb_printf("%-20s ", "TIMESTAMP");
amt -= 21;
}
if (delta) {
mdb_printf("%-20s ", "DELTA");
amt -= 21;
}
if (verbose) {
mdb_printf("%?s ", "LOGCTL");
amt -= 17;
}
mdb_printf("%-*s%</u>\n", amt, "MESSAGE");
}
if (mdb_vread(&next, sizeof (next), addr) == -1) {
mdb_warn("failed to read msgb structure at %p", addr);
return (DCMD_ERR);
}
if (mdb_vread(&lctl, sizeof (lctl), (uintptr_t)next.b_rptr) == -1) {
mdb_warn("failed to read log_ctl_t at %p", next.b_rptr);
return (DCMD_ERR);
}
if (mdb_vread(&cont, sizeof (cont), (uintptr_t)next.b_cont) == -1) {
mdb_warn("failed to read msgb structure at %p", next.b_cont);
return (DCMD_ERR);
}
if (mdb_readstr(line, sizeof (line), (uintptr_t)cont.b_rptr) == -1) {
mdb_warn("failed to read string at %p", cont.b_rptr);
return (DCMD_ERR);
}
if (abstime)
mdb_printf("%Y ", lctl.ttime);
if (delta) {
timestruc_t hr_time;
int64_t diff;
char buf[32] = { 0 };
if (mdb_readvar(&hr_time, "panic_hrestime") == -1) {
mdb_warn("failed to read panic_hrestime");
return (DCMD_ERR);
}
if (hr_time.tv_sec == 0 &&
mdb_readvar(&hr_time, "hrestime") == -1) {
mdb_warn("failed to read hrestime");
return (DCMD_ERR);
}
diff = (int64_t)lctl.ttime - hr_time.tv_sec;
mdb_nicetime(SEC2NSEC(diff), buf, sizeof (buf));
mdb_printf("%-20s ", buf);
}
if (verbose)
mdb_printf("%?p ", next.b_rptr);
/* skip leading CR to avoid extra lines */
if (line[0] == 0x0d)
mdb_printf("%s", &line[1]);
else
mdb_printf("%s", &line[0]);
return (DCMD_OK);
}
void
msgbuf_help(void)
{
mdb_printf("Print the most recent console messages.\n\n"
"%<b>OPTIONS%</b>\n"
"\t-t\tInclude the age of the message from now.\n"
"\t-T\tInclude the date/time of the message.\n"
"\t-v\tInclude the date/time of the message as well as the address "
"of its log_ctl_t.\n");
}
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