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/*
* detachtty - run long-lived processes non interactively in the background,
* and reattach them to a terminal at later time
*
* Copyright (C) 2016-2017 Massimiliano Ghilardi
* Copyright (C) 2001-2005 Daniel Barlow
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <stdio.h>
#include <stdarg.h>
#include <signal.h>
#include <errno.h>
#include <time.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
FILE *log_fp = NULL;
int logprintf(char *progname, char *format,...) {
va_list ap;
int n;
va_start(ap, format);
fprintf(log_fp, ";;; %s: %ld: ", progname, time(NULL));
n=vfprintf(log_fp, format, ap);
va_end(ap);
fputs("\r\n",log_fp);
return n;
}
void bail(char *progname,char *format,...) {
va_list ap;
int err = errno;
va_start(ap, format);
fprintf(log_fp,";;; %s: %ld: FATAL ", progname, time(NULL));
vfprintf(log_fp, format, ap);
va_end(ap);
/* use \r\n to avoid staircase effect */
if (err > 0)
fprintf(log_fp, " (%s)\r\n", strerror(err));
else
fputs("\r\n",log_fp);
kill(getpid(), SIGTERM);
}
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