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/*-
* Copyright (c) 2009-2016 Janne Snabb. All rights reserved.
*
* 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*
*
* Software web site:
* https://dist.epipe.com/downtimed/
*
*/
/*
* The structure of the downtime database file.
*
* The format is Y2K38 bug, 64 bit and endianness safe.
* We need a portable format, because everything in the system could
* change during the downtime. Someone could change the machine from
* big-endian 32 bit architecture to 64 bit little-endian computer.
* Or someone might want to transfer the database from one computer to
* another for further analysis. It would also be possible to transmit
* the data in the same format to a remote collector through a network
* socket.
*
* At the time when 128 bit computers are introduced, possibly some pack
* #pragmas or similar should be inserted here to retain compatibility. XXX
*/
struct downtimedb {
uint8_t what; /* Op code of the recorded event */
uint8_t _padding[7]; /* Reserved for future extensions */
int64_t when; /* UNIX time in big-endian format */
};
#define DOWNTIMEDB_WHAT_NONE 0
#define DOWNTIMEDB_WHAT_UP 1
#define DOWNTIMEDB_WHAT_SHUTDOWN 2
#define DOWNTIMEDB_WHAT_CRASH 3
#if defined(__linux__) || \
(defined(__FreeBSD_kernel__) && !defined(__FreeBSD__)) \
|| defined(__GNU__) || !defined(_PATH_VARDB)
#define PATH_DOWNTIMEDBDIR "/var/lib/downtimed/"
#else
#define PATH_DOWNTIMEDBDIR _PATH_VARDB "downtimed/"
#endif
#define PATH_DOWNTIMEDBFILE PATH_DOWNTIMEDBDIR "downtimedb"
/* default absolute time format unless specified by user */
#define FMT_DATETIME "%F %T"
/* Function prototypes */
int downtimedb_read(int, struct downtimedb *);
int downtimedb_write(int, struct downtimedb *);
char * timestr_abs(time_t, const char *, int);
char * timestr_int(time_t);
/* eof */
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