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/*
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* Copyright ( C ) 2001 Sistina Software ( UK ) Limited .
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*
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* This file is released under the GPL .
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*/
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# ifndef _LVM_LOG_H
# define _LVM_LOG_H
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/*
* 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
*
*/
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# include <stdio.h>
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# include <string.h>
# include <errno.h>
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# define _LOG_DEBUG 7
# define _LOG_INFO 6
# define _LOG_NOTICE 5
# define _LOG_WARN 4
# define _LOG_ERR 3
# define _LOG_FATAL 2
void init_log ( FILE * fp ) ;
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void fin_log ( void ) ;
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void init_syslog ( int facility ) ;
void fin_syslog ( void ) ;
void init_verbose ( int level ) ;
void init_test ( int level ) ;
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void init_partial ( int level ) ;
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void init_debug ( int level ) ;
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void init_cmd_name ( int status ) ;
void init_msg_prefix ( const char * prefix ) ;
void init_indent ( int indent ) ;
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void init_ignorelockingfailure ( int level ) ;
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void set_cmd_name ( const char * cmd_name ) ;
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int test_mode ( void ) ;
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int partial_mode ( void ) ;
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int debug_level ( void ) ;
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int ignorelockingfailure ( void ) ;
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/* Suppress messages to stdout/stderr */
void log_suppress ( int suppress ) ;
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void print_log ( int level , const char * file , int line , const char * format , . . . )
__attribute__ ( ( format ( printf , 4 , 5 ) ) ) ;
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# define plog(l, x...) print_log(l, __FILE__, __LINE__ , ## x)
# define log_debug(x...) plog(_LOG_DEBUG, x)
# define log_info(x...) plog(_LOG_INFO, x)
# define log_notice(x...) plog(_LOG_NOTICE, x)
# define log_warn(x...) plog(_LOG_WARN, x)
# define log_err(x...) plog(_LOG_ERR, x)
# define log_fatal(x...) plog(_LOG_FATAL, x)
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# define stack log_debug("<backtrace>") /* Backtrace on error */
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# define log_error(fmt, args...) log_err(fmt , ## args)
# define log_print(fmt, args...) log_warn(fmt , ## args)
# define log_verbose(fmt, args...) log_notice(fmt , ## args)
# define log_very_verbose(fmt, args...) log_info(fmt , ## args)
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/* Two System call equivalents */
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# 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 ) )
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# endif
/*
* Local variables :
* c - file - style : " linux "
* End :
*/