/* ==== file.c ============================================================
 * Copyright (c) 1994 by Chris Provenzano, proven@mit.edu
 * 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *  This product includes software developed by Chris Provenzano.
 * 4. The name of Chris Provenzano may not be used to endorse or promote 
 *	  products derived from this software without specific prior written
 *	  permission.
 *
 * THIS SOFTWARE IS PROVIDED BY CHRIS PROVENZANO ``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 CHRIS PROVENZANO 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.
 *
 * Description : Pthread functions.
 *
 *  1.00 94/07/28 proven
 *      -Started coding this file.
 */


/* File structure :
	YYMMDDHHMM\0:Last data offset into file\n
	
	YYMMDDHHMM\0Item:   \0Alarm:Seconds prior: Item ...\0: Item ...\0\n
		...
	YYMMDDHHMM\0Item:   \0Item ...\0Item ...\0\n

	Sitem 	Scheduled item:Description to display to the user
	Alarm	How many minutes before scehduled item to notify user
	Freq	How often is seconds to notify user

	Nitem	Notify item: Notification only occurs once.
 */

#include <pthread.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <stdio.h>
#include <errno.h>

/* ==========================================================================
 * file_open();
 */
int file_open(char * filename)
{
	int fd;

	if (stat(filename, &buf)) < OK) {
		perror();
		exit(2);
	}
	if (!F_ISFILE(buf.st_more)) 
		fprintf(stderr, "File %s not a regular file\n", filename);
		exit(2);
	}
	if ((fd = open(filename, O_RDWR)) < OK) {
		perror();
		exit(2);
	}
	
	return(fd);
}


if (read(fd, buf, fixed size) < OK)) {
	perror();
	exit(2);
}

/* Get offset */

if (lseek(fd, offset, SEEK_SET) < OK) {
	perror()
	exit(2);
}

Get every notification until current time.
Prompt user for 

Get every notification after current time and schedule them.