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glibc/nscd/dbg_log.c
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/* Copyright (c) 1998-2016 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1998. | |
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; 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, see <http://www.gnu.org/licenses/>. */ | |
#include <stdarg.h> | |
#include <stdio.h> | |
#include <string.h> | |
#include <syslog.h> | |
#include <unistd.h> | |
#include "dbg_log.h" | |
#include "nscd.h" | |
/* if in debug mode and we have a debug file, we write the messages to it, | |
if in debug mode and no debug file, we write the messages to stderr, | |
else to syslog. */ | |
static char *logfilename; | |
FILE *dbgout; | |
int debug_level; | |
void | |
set_logfile (const char *logfile) | |
{ | |
logfilename = strdup (logfile); | |
} | |
int | |
init_logfile (void) | |
{ | |
if (logfilename) | |
{ | |
dbgout = fopen64 (logfilename, "a"); | |
return dbgout == NULL ? 0 : 1; | |
} | |
return 1; | |
} | |
void | |
dbg_log (const char *fmt,...) | |
{ | |
va_list ap; | |
char msg2[512]; | |
va_start (ap, fmt); | |
vsnprintf (msg2, sizeof (msg2), fmt, ap); | |
if (debug_level > 0) | |
{ | |
time_t t = time (NULL); | |
struct tm now; | |
localtime_r (&t, &now); | |
char buf[256]; | |
strftime (buf, sizeof (buf), "%c", &now); | |
char msg[512]; | |
snprintf (msg, sizeof (msg), "%s - %d: %s%s", buf, getpid (), msg2, | |
msg2[strlen (msg2) - 1] == '\n' ? "" : "\n"); | |
if (dbgout) | |
{ | |
fputs (msg, dbgout); | |
fflush (dbgout); | |
} | |
else | |
fputs (msg, stderr); | |
} | |
else | |
syslog (LOG_NOTICE, "%d %s", getpid (), msg2); | |
va_end (ap); | |
} |