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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (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 (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2012 by Delphix. All rights reserved.
* Copyright 2017 Nexenta Systems, Inc. All rights reserved.
* Copyright 2017 RackTop Systems.
* Copyright (c) 2018, Joyent, Inc.
*/
#include <sys/param.h>
#include <sys/types.h>
#include <sys/varargs.h>
#include <sys/systm.h>
#include <sys/cmn_err.h>
#include <sys/log.h>
#include <fakekernel.h>
void abort(void) __NORETURN;
void debug_enter(char *);
char *volatile panicstr;
va_list panicargs;
char panicbuf[512];
volatile int aok;
static const int
ce_flags[CE_IGNORE] = { SL_NOTE, SL_NOTE, SL_WARN, SL_FATAL };
static const char
ce_prefix[CE_IGNORE][10] = { "", "NOTICE: ", "WARNING: ", "" };
static const char
ce_suffix[CE_IGNORE][2] = { "", "\n", "\n", "" };
/*
* This function is just a stub, exported NODIRECT so that
* comsumers like fksmbd can provide their own.
* (One that actually prints the messages.)
*
* It's used by fakekernel_cprintf() below.
* The flags are SL_... from strlog.h
*/
/* ARGSUSED */
void
fakekernel_putlog(char *msg, size_t len, int flags)
{
}
/*
* fakekernel_cprintf() corresponds to os/printf.c:cprintf()
* This formats the message and calls fakekernel_putlog().
* It's exported NODIRECT to allow replacment.
* The flags are SL_... from strlog.h
*/
void
fakekernel_cprintf(const char *fmt, va_list adx, int flags,
const char *prefix, const char *suffix)
{
size_t bufsize = LOG_MSGSIZE;
char buf[LOG_MSGSIZE];
char *bufp = buf;
char *msgp, *bufend;
size_t len;
if (strchr("^!?", fmt[0]) != NULL) {
if (fmt[0] == '^')
flags |= SL_CONSONLY;
else if (fmt[0] == '!')
flags |= SL_LOGONLY;
fmt++;
}
bufend = bufp + bufsize;
msgp = bufp;
msgp += snprintf(msgp, bufend - msgp, "[fake_kernel] ");
msgp += snprintf(msgp, bufend - msgp, prefix);
msgp += vsnprintf(msgp, bufend - msgp, fmt, adx);
msgp += snprintf(msgp, bufend - msgp, suffix);
len = msgp - bufp;
fakekernel_putlog(bufp, len, flags);
}
/* ARGSUSED */
void
vzprintf(zoneid_t zoneid, const char *fmt, va_list adx)
{
fakekernel_cprintf(fmt, adx, SL_CONSOLE | SL_NOTE, "", "");
}
/*PRINTFLIKE2*/
void
zprintf(zoneid_t zoneid, const char *fmt, ...)
{
va_list adx;
va_start(adx, fmt);
vzprintf(zoneid, fmt, adx);
va_end(adx);
}
/*
* "User-level crash dump", if you will.
*/
void
vpanic(const char *fmt, va_list adx)
{
va_list tmpargs;
panicstr = (char *)fmt;
va_copy(panicargs, adx);
va_copy(tmpargs, adx);
fakekernel_cprintf(fmt, tmpargs, SL_FATAL, "fatal: ", "\n");
/* Call libc`assfail() so that mdb ::status works */
(void) vsnprintf(panicbuf, sizeof (panicbuf), fmt, adx);
debug_enter(panicbuf);
(void) assfail(panicbuf, "(panic)", 0);
abort(); /* avoid "noreturn" warnings */
}
void
panic(const char *fmt, ...)
{
va_list adx;
va_start(adx, fmt);
vpanic(fmt, adx);
va_end(adx);
}
void
fm_panic(const char *fmt, ...)
{
va_list adx;
va_start(adx, fmt);
vpanic(fmt, adx);
va_end(adx);
}
void
vcmn_err(int ce, const char *fmt, va_list adx)
{
if (ce == CE_PANIC)
vpanic(fmt, adx);
if (ce >= CE_IGNORE)
return;
fakekernel_cprintf(fmt, adx, ce_flags[ce] | SL_CONSOLE,
ce_prefix[ce], ce_suffix[ce]);
}
/*PRINTFLIKE2*/
void
cmn_err(int ce, const char *fmt, ...)
{
va_list adx;
va_start(adx, fmt);
vcmn_err(ce, fmt, adx);
va_end(adx);
}
/* ARGSUSED */
void
debug_enter(char *str)
{
/* Just a place for a break point. */
}
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