Current File : //backups/router/usr/include/sys/boottrace.h
/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2008-2022 NetApp, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _SYS_BOOTTRACE_H_
#define _SYS_BOOTTRACE_H_
#define _BOOTTRACE_BOOTTRACE "kern.boottrace.boottrace"
#define _BOOTTRACE_RUNTRACE "kern.boottrace.runtrace"
#define _BOOTTRACE_SHUTTRACE "kern.boottrace.shuttrace"
/* Messages are formatted as 'tdname:name' */
#define BT_EVENT_TDNAMELEN 24
#define BT_EVENT_NAMELEN 40
#define BT_MSGLEN (BT_EVENT_NAMELEN + 1 + BT_EVENT_TDNAMELEN)
#ifndef _KERNEL
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <sys/sysctl.h>
/*
* Convenience macros. Userland API.
*/
#define BOOTTRACE(...) _boottrace(_BOOTTRACE_BOOTTRACE, __VA_ARGS__)
#define RUNTRACE(...) _boottrace(_BOOTTRACE_RUNTRACE, __VA_ARGS__)
#define SHUTTRACE(...) _boottrace(_BOOTTRACE_SHUTTRACE, __VA_ARGS__)
/*
* Call the requested boottrace sysctl with provided va-formatted message.
*/
static __inline void
_boottrace(const char *sysctlname, const char *fmt, ...)
{
va_list ap;
char msg[BT_MSGLEN];
int len;
va_start(ap, fmt);
len = vsnprintf(msg, sizeof(msg), fmt, ap);
va_end(ap);
/* Log the event, even if truncated. */
if (len >= 0)
(void)sysctlbyname(sysctlname, NULL, NULL, msg, strlen(msg));
}
#else /* _KERNEL */
/*
* Convenience macros. Kernel API.
*/
#define _BOOTTRACE(tdname, ...) do { \
if (boottrace_enabled) \
(void)boottrace(tdname, __VA_ARGS__); \
} while (0)
#define BOOTTRACE(...) _BOOTTRACE(NULL, __VA_ARGS__)
#define BOOTTRACE_INIT(...) _BOOTTRACE("kernel", __VA_ARGS__)
extern bool boottrace_enabled;
extern bool shutdown_trace;
int boottrace(const char *_tdname, const char *_eventfmt, ...)
__printflike(2,3);
void boottrace_reset(const char *_actor);
int boottrace_resize(u_int _newsize);
void boottrace_dump_console(void);
#endif /* _KERNEL */
#endif /* _SYS_BOOTTRACE_H_ */
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