mirror of
https://github.com/openharmony/third_party_libfuse.git
synced 2026-08-26 20:47:37 -04:00
fangzhiyi18
95 lines
2.2 KiB
C
95 lines
2.2 KiB
C
/*
|
|
FUSE: Filesystem in Userspace
|
|
Copyright (C) 2019 Red Hat, Inc.
|
|
|
|
This program can be distributed under the terms of the GNU LGPLv2.
|
|
See the file COPYING.LIB.
|
|
*/
|
|
|
|
#ifndef FUSE_LOG_H_
|
|
#define FUSE_LOG_H_
|
|
|
|
/** @file
|
|
*
|
|
* This file defines the logging interface of FUSE
|
|
*/
|
|
|
|
#include <stdarg.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/**
|
|
* Log severity level
|
|
*
|
|
* These levels correspond to syslog(2) log levels since they are widely used.
|
|
*/
|
|
enum fuse_log_level {
|
|
FUSE_LOG_EMERG,
|
|
FUSE_LOG_ALERT,
|
|
FUSE_LOG_CRIT,
|
|
FUSE_LOG_ERR,
|
|
FUSE_LOG_WARNING,
|
|
FUSE_LOG_NOTICE,
|
|
FUSE_LOG_INFO,
|
|
FUSE_LOG_DEBUG
|
|
};
|
|
|
|
/**
|
|
* Log message handler function.
|
|
*
|
|
* This function must be thread-safe. It may be called from any libfuse
|
|
* function, including fuse_parse_cmdline() and other functions invoked before
|
|
* a FUSE filesystem is created.
|
|
*
|
|
* Install a custom log message handler function using fuse_set_log_func().
|
|
*
|
|
* @param level log severity level
|
|
* @param fmt sprintf-style format string including newline
|
|
* @param ap format string arguments
|
|
*/
|
|
typedef void (*fuse_log_func_t)(enum fuse_log_level level,
|
|
const char *fmt, va_list ap);
|
|
|
|
/**
|
|
* Install a custom log handler function.
|
|
*
|
|
* Log messages are emitted by libfuse functions to report errors and debug
|
|
* information. Messages are printed to stderr by default but this can be
|
|
* overridden by installing a custom log message handler function.
|
|
*
|
|
* The log message handler function is global and affects all FUSE filesystems
|
|
* created within this process.
|
|
*
|
|
* @param func a custom log message handler function or NULL to revert to
|
|
* the default
|
|
*/
|
|
void fuse_set_log_func(fuse_log_func_t func);
|
|
|
|
/**
|
|
* Emit a log message
|
|
*
|
|
* @param level severity level (FUSE_LOG_ERR, FUSE_LOG_DEBUG, etc)
|
|
* @param fmt sprintf-style format string including newline
|
|
*/
|
|
void fuse_log(enum fuse_log_level level, const char *fmt, ...);
|
|
|
|
/**
|
|
* Switch default log handler from stderr to syslog
|
|
*
|
|
* Passed options are according to 'man 3 openlog'
|
|
*/
|
|
void fuse_log_enable_syslog(const char *ident, int option, int facility);
|
|
|
|
/**
|
|
* To be called at teardown to close syslog.
|
|
*/
|
|
void fuse_log_close_syslog(void);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* FUSE_LOG_H_ */
|