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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* 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:
*
* Copyright (C) 2011 Red Hat, Inc.
*/
#define _GNU_SOURCE
#include <config.h>
#include <stdio.h>
#include <syslog.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <string.h>
#include <unistd.h>
#include "mm-log.h"
enum {
TS_FLAG_NONE = 0,
TS_FLAG_WALL,
TS_FLAG_REL
};
static gboolean ts_flags = TS_FLAG_NONE;
static guint32 log_level = LOGL_INFO | LOGL_WARN | LOGL_ERR;
static GTimeVal rel_start = { 0, 0 };
static int logfd = -1;
typedef struct {
guint32 num;
const char *name;
} LogDesc;
static const LogDesc level_descs[] = {
{ LOGL_ERR, "ERR" },
{ LOGL_WARN | LOGL_ERR, "WARN" },
{ LOGL_INFO | LOGL_WARN | LOGL_ERR, "INFO" },
{ LOGL_DEBUG | LOGL_INFO | LOGL_WARN | LOGL_ERR, "DEBUG" },
{ 0, NULL }
};
void
_mm_log (const char *loc,
const char *func,
guint32 level,
const char *fmt,
...)
{
va_list args;
char *msg;
GTimeVal tv;
char tsbuf[100] = { 0 };
char msgbuf[512] = { 0 };
int syslog_priority = LOG_INFO;
const char *prefix = NULL;
ssize_t ign;
if (!(log_level & level))
return;
va_start (args, fmt);
msg = g_strdup_vprintf (fmt, args);
va_end (args);
if (ts_flags == TS_FLAG_WALL) {
g_get_current_time (&tv);
snprintf (&tsbuf[0], sizeof (tsbuf), " [%09ld.%06ld]", tv.tv_sec, tv.tv_usec);
} else if (ts_flags == TS_FLAG_REL) {
glong secs;
glong usecs;
g_get_current_time (&tv);
secs = tv.tv_sec - rel_start.tv_sec;
usecs = tv.tv_usec - rel_start.tv_usec;
if (usecs < 0) {
secs--;
usecs += 1000000;
}
snprintf (&tsbuf[0], sizeof (tsbuf), " [%06ld.%06ld]", secs, usecs);
}
if ((log_level & LOGL_DEBUG) && (level == LOGL_DEBUG))
prefix = "<debug>";
else if ((log_level & LOGL_INFO) && (level == LOGL_INFO))
prefix = "<info> ";
else if ((log_level & LOGL_WARN) && (level == LOGL_WARN)) {
prefix = "<warn> ";
syslog_priority = LOG_WARNING;
} else if ((log_level & LOGL_ERR) && (level == LOGL_ERR)) {
prefix = "<error>";
syslog_priority = LOG_ERR;
} else
g_warn_if_reached ();
if (prefix) {
if (log_level & LOGL_DEBUG)
snprintf (msgbuf, sizeof (msgbuf), "%s%s [%s] %s(): %s\n", prefix, tsbuf, loc, func, msg);
else
snprintf (msgbuf, sizeof (msgbuf), "%s%s %s\n", prefix, tsbuf, msg);
if (logfd < 0)
syslog (syslog_priority, "%s", msgbuf);
else {
ign = write (logfd, msgbuf, strlen (msgbuf));
if (ign) {} /* whatever; really shut up about unused result */
fsync (logfd); /* Make sure output is dumped to disk immediately */
}
}
g_free (msg);
}
static void
log_handler (const gchar *log_domain,
GLogLevelFlags level,
const gchar *message,
gpointer ignored)
{
int syslog_priority;
ssize_t ign;
switch (level) {
case G_LOG_LEVEL_ERROR:
syslog_priority = LOG_CRIT;
break;
case G_LOG_LEVEL_CRITICAL:
syslog_priority = LOG_ERR;
break;
case G_LOG_LEVEL_WARNING:
syslog_priority = LOG_WARNING;
break;
case G_LOG_LEVEL_MESSAGE:
syslog_priority = LOG_NOTICE;
break;
case G_LOG_LEVEL_DEBUG:
syslog_priority = LOG_DEBUG;
break;
case G_LOG_LEVEL_INFO:
default:
syslog_priority = LOG_INFO;
break;
}
if (logfd < 0)
syslog (syslog_priority, "%s", message);
else {
ign = write (logfd, message, strlen (message));
if (ign) {} /* whatever; really shut up about unused result */
}
}
gboolean
mm_log_setup (const char *level,
const char *log_file,
gboolean show_timestamps,
gboolean rel_timestamps,
GError **error)
{
/* levels */
if (level && strlen (level)) {
gboolean found = FALSE;
const LogDesc *diter;
for (diter = &level_descs[0]; diter->name; diter++) {
if (!strcasecmp (diter->name, level)) {
log_level = diter->num;
found = TRUE;
break;
}
}
if (!found) {
g_set_error (error, 0, 0, "Unknown log level '%s'", level);
return FALSE;
}
}
if (show_timestamps)
ts_flags = TS_FLAG_WALL;
else if (rel_timestamps)
ts_flags = TS_FLAG_REL;
/* Grab start time for relative timestamps */
g_get_current_time (&rel_start);
if (log_file == NULL)
openlog (G_LOG_DOMAIN, LOG_CONS | LOG_PID | LOG_PERROR, LOG_DAEMON);
else {
logfd = open (log_file,
O_CREAT | O_APPEND | O_WRONLY,
S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP);
if (logfd < 0) {
g_set_error (error, 0, 0, "Failed to open log file: (%d) %s",
errno, strerror (errno));
return FALSE;
}
}
g_log_set_handler (G_LOG_DOMAIN,
G_LOG_LEVEL_MASK | G_LOG_FLAG_FATAL | G_LOG_FLAG_RECURSION,
log_handler,
NULL);
return TRUE;
}
void
mm_log_usr1 (void)
{
}
void
mm_log_shutdown (void)
{
if (logfd < 0)
closelog ();
else
close (logfd);
}
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