/* $NetBSD: log.h,v 1.1.1.2 2009/12/02 00:25:43 haad Exp $ */ /* * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved. * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved. * * This file is part of LVM2. * * This copyrighted material is made available to anyone wishing to use, * modify, copy, or redistribute it subject to the terms and conditions * of the GNU Lesser General Public License v.2.1. * * You should have received a copy of the GNU Lesser General Public License * along with this program; if not, write to the Free Software Foundation, * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #ifndef _LVM_LOG_H #define _LVM_LOG_H #include /* * printf()-style macros to use for messages: * * log_error - always print to stderr. * log_print - always print to stdout. Use this instead of printf. * log_verbose - print to stdout if verbose is set (-v) * log_very_verbose - print to stdout if verbose is set twice (-vv) * log_debug - print to stdout if verbose is set three times (-vvv) * * In addition, messages will be logged to file or syslog if they * are more serious than the log level specified with the log/debug_level * parameter in the configuration file. These messages get the file * and line number prepended. 'stack' (without arguments) can be used * to log this information at debug level. * * log_sys_error and log_sys_very_verbose are for errors from system calls * e.g. log_sys_error("stat", filename); * /dev/fd/7: stat failed: No such file or directory * */ #include /* FILE */ #include /* strerror() */ #include #define EUNCLASSIFIED -1 /* Generic error code */ #define _LOG_STDERR 128 /* force things to go to stderr, even if loglevel would make them go to stdout */ #define _LOG_DEBUG 7 #define _LOG_INFO 6 #define _LOG_NOTICE 5 #define _LOG_WARN 4 #define _LOG_ERR 3 #define _LOG_FATAL 2 #define log_debug(x...) LOG_LINE(_LOG_DEBUG, x) #define log_info(x...) LOG_LINE(_LOG_INFO, x) #define log_notice(x...) LOG_LINE(_LOG_NOTICE, x) #define log_warn(x...) LOG_LINE(_LOG_WARN | _LOG_STDERR, x) #define log_err(x...) LOG_LINE_WITH_ERRNO(_LOG_ERR, EUNCLASSIFIED, x) #define log_fatal(x...) LOG_LINE_WITH_ERRNO(_LOG_FATAL, EUNCLASSIFIED, x) #define stack log_debug("") /* Backtrace on error */ #define log_very_verbose(args...) log_info(args) #define log_verbose(args...) log_notice(args) #define log_print(args...) LOG_LINE(_LOG_WARN, args) #define log_error(args...) log_err(args) #define log_errno(args...) LOG_LINE_WITH_ERRNO(_LOG_ERR, args) /* System call equivalents */ #define log_sys_error(x, y) \ log_err("%s: %s failed: %s", y, x, strerror(errno)) #define log_sys_very_verbose(x, y) \ log_info("%s: %s failed: %s", y, x, strerror(errno)) #define log_sys_debug(x, y) \ log_debug("%s: %s failed: %s", y, x, strerror(errno)) #define return_0 do { stack; return 0; } while (0) #define return_NULL do { stack; return NULL; } while (0) #define goto_out do { stack; goto out; } while (0) #define goto_bad do { stack; goto bad; } while (0) #endif