cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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log.c (1354B)

      1// SPDX-License-Identifier: LGPL-2.1+
      2// Copyright (C) 2022, Linaro Ltd - Daniel Lezcano <daniel.lezcano@linaro.org>
      3#include <stdarg.h>
      4#include <stdio.h>
      5#include <string.h>
      6#include <syslog.h>
      7#include "log.h"
      8
      9static const char *__ident = "unknown";
     10static int __options;
     11
     12static const char * const loglvl[] = {
     13	[LOG_DEBUG]	= "DEBUG",
     14	[LOG_INFO]	= "INFO",
     15	[LOG_NOTICE]	= "NOTICE",
     16	[LOG_WARNING]	= "WARN",
     17	[LOG_ERR]	= "ERROR",
     18	[LOG_CRIT]	= "CRITICAL",
     19	[LOG_ALERT]	= "ALERT",
     20	[LOG_EMERG]	= "EMERG",
     21};
     22
     23int log_str2level(const char *lvl)
     24{
     25	int i;
     26
     27	for (i = 0; i < sizeof(loglvl) / sizeof(loglvl[LOG_DEBUG]); i++)
     28		if (!strcmp(lvl, loglvl[i]))
     29			return i;
     30
     31	return LOG_DEBUG;
     32}
     33
     34extern void logit(int level, const char *format, ...)
     35{
     36	va_list args;
     37
     38	va_start(args, format);
     39
     40	if (__options & TO_SYSLOG)
     41		vsyslog(level, format, args);
     42
     43	if (__options & TO_STDERR)
     44		vfprintf(stderr, format, args);
     45
     46	if (__options & TO_STDOUT)
     47		vfprintf(stdout, format, args);
     48
     49	va_end(args);
     50}
     51
     52int log_init(int level, const char *ident, int options)
     53{
     54	if (!options)
     55		return -1;
     56
     57	if (level > LOG_DEBUG)
     58		return -1;
     59
     60	if (!ident)
     61		return -1;
     62
     63	__ident = ident;
     64	__options = options;
     65
     66	if (options & TO_SYSLOG) {
     67		openlog(__ident, options | LOG_NDELAY, LOG_USER);
     68		setlogmask(LOG_UPTO(level));
     69	}
     70
     71	return 0;
     72}
     73
     74void log_exit(void)
     75{
     76	closelog();
     77}