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// SPDX-License-Identifier: LGPL-2.1-or-later
/*
* This file is part of libnvme.
* Copyright (C) 2021 SUSE LLC
*
* Authors: Hannes Reinecke <hare@suse.de>
*
* This file implements basic logging functionality.
*/
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <stdbool.h>
#include <syslog.h>
#include <unistd.h>
#include <time.h>
#include <string.h>
#define LOG_FUNCNAME 1
#include "private.h"
#include "log.h"
#include "cleanup.h"
#ifndef LOG_CLOCK
#define LOG_CLOCK CLOCK_MONOTONIC
#endif
static nvme_root_t root;
void __attribute__((format(printf, 4, 5)))
__nvme_msg(nvme_root_t r, int lvl,
const char *func, const char *format, ...)
{
FILE *fp = stderr;
va_list ap;
char pidbuf[16];
char timebuf[32];
static const char *const formats[] = {
"%s%s%s",
"%s%s%s: ",
"%s<%s>%s ",
"%s<%s> %s: ",
"[%s] %s%s ",
"[%s]%s %s: ",
"[%s] <%s>%s ",
"[%s] <%s> %s: ",
};
_cleanup_free_ char *header = NULL;
_cleanup_free_ char *message = NULL;
int idx = 0;
if (!r)
r = root;
if (r)
fp = r->fp;
if (r && lvl > r->log_level)
return;
if (!r && lvl > DEFAULT_LOGLEVEL)
return;
if (r && r->log_timestamp) {
struct timespec now;
clock_gettime(LOG_CLOCK, &now);
snprintf(timebuf, sizeof(timebuf), "%6ld.%06ld",
(long)now.tv_sec, now.tv_nsec / 1000);
idx |= 1 << 2;
} else
*timebuf = '\0';
if (r && r->log_pid) {
snprintf(pidbuf, sizeof(pidbuf), "%ld", (long)getpid());
idx |= 1 << 1;
} else
*pidbuf = '\0';
if (func)
idx |= 1 << 0;
if (asprintf(&header, formats[idx],
timebuf, pidbuf, func ? func : "") == -1)
header = NULL;
va_start(ap, format);
if (vasprintf(&message, format, ap) == -1)
message = NULL;
va_end(ap);
fprintf(fp, "%s%s",
header ? header : "<error>",
message ? message : "<error>");
}
void nvme_init_logging(nvme_root_t r, int lvl, bool log_pid, bool log_tstamp)
{
r->log_level = lvl;
r->log_pid = log_pid;
r->log_timestamp = log_tstamp;
}
int nvme_get_logging_level(nvme_root_t r, bool *log_pid, bool *log_tstamp)
{
if (!r)
r = root;
if (!r)
return DEFAULT_LOGLEVEL;
if (log_pid)
*log_pid = r->log_pid;
if (log_tstamp)
*log_tstamp = r->log_timestamp;
return r->log_level;
}
void nvme_set_root(nvme_root_t r)
{
root = r;
}
void nvme_set_debug(bool debug)
{
root->log_level = debug ? LOG_DEBUG : DEFAULT_LOGLEVEL;
}
bool nvme_get_debug(void)
{
return root->log_level == LOG_DEBUG;
}
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