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https://github.com/s3fs-fuse/s3fs-fuse.git
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155 lines
6.4 KiB
C
155 lines
6.4 KiB
C
/*
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* s3fs - FUSE-based file system backed by Amazon S3
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*
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* Copyright(C) 2007 Randy Rizun <rrizun@gmail.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef S3FS_LOGGER_H_
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#define S3FS_LOGGER_H_
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#include <syslog.h>
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//-------------------------------------------------------------------
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// Debug level
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//-------------------------------------------------------------------
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enum s3fs_log_level{
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S3FS_LOG_CRIT = 0, // LOG_CRIT
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S3FS_LOG_ERR = 1, // LOG_ERR
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S3FS_LOG_WARN = 3, // LOG_WARNING
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S3FS_LOG_INFO = 7, // LOG_INFO
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S3FS_LOG_DBG = 15 // LOG_DEBUG
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};
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//-------------------------------------------------------------------
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// Debug macros
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//-------------------------------------------------------------------
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#define IS_S3FS_LOG_CRIT() (S3FS_LOG_CRIT == debug_level)
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#define IS_S3FS_LOG_ERR() (S3FS_LOG_ERR == (debug_level & S3FS_LOG_DBG))
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#define IS_S3FS_LOG_WARN() (S3FS_LOG_WARN == (debug_level & S3FS_LOG_DBG))
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#define IS_S3FS_LOG_INFO() (S3FS_LOG_INFO == (debug_level & S3FS_LOG_DBG))
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#define IS_S3FS_LOG_DBG() (S3FS_LOG_DBG == (debug_level & S3FS_LOG_DBG))
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#define S3FS_LOG_LEVEL_TO_SYSLOG(level) \
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( S3FS_LOG_DBG == (level & S3FS_LOG_DBG) ? LOG_DEBUG : \
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S3FS_LOG_INFO == (level & S3FS_LOG_DBG) ? LOG_INFO : \
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S3FS_LOG_WARN == (level & S3FS_LOG_DBG) ? LOG_WARNING : \
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S3FS_LOG_ERR == (level & S3FS_LOG_DBG) ? LOG_ERR : LOG_CRIT )
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#define S3FS_LOG_LEVEL_STRING(level) \
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( S3FS_LOG_DBG == (level & S3FS_LOG_DBG) ? "[DBG] " : \
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S3FS_LOG_INFO == (level & S3FS_LOG_DBG) ? "[INF] " : \
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S3FS_LOG_WARN == (level & S3FS_LOG_DBG) ? "[WAN] " : \
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S3FS_LOG_ERR == (level & S3FS_LOG_DBG) ? "[ERR] " : "[CRT] " )
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#define S3FS_LOG_NEST_MAX 4
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#define S3FS_LOG_NEST(nest) (nest < S3FS_LOG_NEST_MAX ? s3fs_log_nest[nest] : s3fs_log_nest[S3FS_LOG_NEST_MAX - 1])
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#define S3FS_LOW_LOGPRN(level, fmt, ...) \
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do{ \
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if(S3FS_LOG_CRIT == level || (S3FS_LOG_CRIT != debug_level && level == (debug_level & level))){ \
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if(foreground){ \
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fprintf(stdout, "%s%s:%s(%d): " fmt "%s\n", S3FS_LOG_LEVEL_STRING(level), __FILE__, __func__, __LINE__, __VA_ARGS__); \
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}else{ \
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syslog(S3FS_LOG_LEVEL_TO_SYSLOG(level), "%s%s:%s(%d): " fmt "%s", instance_name.c_str(), __FILE__, __func__, __LINE__, __VA_ARGS__); \
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} \
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} \
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}while(0)
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#define S3FS_LOW_LOGPRN2(level, nest, fmt, ...) \
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do{ \
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if(S3FS_LOG_CRIT == level || (S3FS_LOG_CRIT != debug_level && level == (debug_level & level))){ \
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if(foreground){ \
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fprintf(stdout, "%s%s%s:%s(%d): " fmt "%s\n", S3FS_LOG_LEVEL_STRING(level), S3FS_LOG_NEST(nest), __FILE__, __func__, __LINE__, __VA_ARGS__); \
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}else{ \
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syslog(S3FS_LOG_LEVEL_TO_SYSLOG(level), "%s%s" fmt "%s", instance_name.c_str(), S3FS_LOG_NEST(nest), __VA_ARGS__); \
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} \
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} \
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}while(0)
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#define S3FS_LOW_CURLDBG(fmt, ...) \
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do{ \
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if(foreground){ \
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fprintf(stdout, "[CURL DBG] " fmt "%s\n", __VA_ARGS__); \
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}else{ \
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syslog(S3FS_LOG_LEVEL_TO_SYSLOG(S3FS_LOG_CRIT), "%s" fmt "%s", instance_name.c_str(), __VA_ARGS__); \
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} \
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}while(0)
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#define S3FS_LOW_LOGPRN_EXIT(fmt, ...) \
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do{ \
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if(foreground){ \
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fprintf(stderr, "s3fs: " fmt "%s\n", __VA_ARGS__); \
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}else{ \
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fprintf(stderr, "s3fs: " fmt "%s\n", __VA_ARGS__); \
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syslog(S3FS_LOG_LEVEL_TO_SYSLOG(S3FS_LOG_CRIT), "%ss3fs: " fmt "%s", instance_name.c_str(), __VA_ARGS__); \
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} \
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}while(0)
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// Special macro for init message
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#define S3FS_PRN_INIT_INFO(fmt, ...) \
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do{ \
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if(foreground){ \
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fprintf(stdout, "%s%s%s:%s(%d): " fmt "%s\n", S3FS_LOG_LEVEL_STRING(S3FS_LOG_INFO), S3FS_LOG_NEST(0), __FILE__, __func__, __LINE__, __VA_ARGS__, ""); \
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}else{ \
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syslog(S3FS_LOG_LEVEL_TO_SYSLOG(S3FS_LOG_INFO), "%s%s" fmt "%s", instance_name.c_str(), S3FS_LOG_NEST(0), __VA_ARGS__, ""); \
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} \
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}while(0)
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// Special macro for checking cache files
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#define S3FS_LOW_CACHE(fp, fmt, ...) \
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do{ \
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if(foreground){ \
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fprintf(fp, fmt "%s\n", __VA_ARGS__); \
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}else{ \
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syslog(S3FS_LOG_LEVEL_TO_SYSLOG(S3FS_LOG_INFO), "%s: " fmt "%s", instance_name.c_str(), __VA_ARGS__); \
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} \
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}while(0)
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// [NOTE]
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// small trick for VA_ARGS
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//
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#define S3FS_PRN_EXIT(fmt, ...) S3FS_LOW_LOGPRN_EXIT(fmt, ##__VA_ARGS__, "")
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#define S3FS_PRN_CRIT(fmt, ...) S3FS_LOW_LOGPRN(S3FS_LOG_CRIT, fmt, ##__VA_ARGS__, "")
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#define S3FS_PRN_ERR(fmt, ...) S3FS_LOW_LOGPRN(S3FS_LOG_ERR, fmt, ##__VA_ARGS__, "")
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#define S3FS_PRN_WARN(fmt, ...) S3FS_LOW_LOGPRN(S3FS_LOG_WARN, fmt, ##__VA_ARGS__, "")
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#define S3FS_PRN_DBG(fmt, ...) S3FS_LOW_LOGPRN(S3FS_LOG_DBG, fmt, ##__VA_ARGS__, "")
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#define S3FS_PRN_INFO(fmt, ...) S3FS_LOW_LOGPRN2(S3FS_LOG_INFO, 0, fmt, ##__VA_ARGS__, "")
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#define S3FS_PRN_INFO0(fmt, ...) S3FS_LOG_INFO(fmt, __VA_ARGS__)
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#define S3FS_PRN_INFO1(fmt, ...) S3FS_LOW_LOGPRN2(S3FS_LOG_INFO, 1, fmt, ##__VA_ARGS__, "")
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#define S3FS_PRN_INFO2(fmt, ...) S3FS_LOW_LOGPRN2(S3FS_LOG_INFO, 2, fmt, ##__VA_ARGS__, "")
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#define S3FS_PRN_INFO3(fmt, ...) S3FS_LOW_LOGPRN2(S3FS_LOG_INFO, 3, fmt, ##__VA_ARGS__, "")
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#define S3FS_PRN_CURL(fmt, ...) S3FS_LOW_CURLDBG(fmt, ##__VA_ARGS__, "")
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#define S3FS_PRN_CACHE(fp, ...) S3FS_LOW_CACHE(fp, ##__VA_ARGS__, "")
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//-------------------------------------------------------------------
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// Global variables
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//-------------------------------------------------------------------
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// TODO: namespace these
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extern s3fs_log_level debug_level;
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extern const char* s3fs_log_nest[S3FS_LOG_NEST_MAX];
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#endif // S3FS_LOGGER_H_
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/*
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* Local variables:
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* tab-width: 4
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* c-basic-offset: 4
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* End:
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* vim600: expandtab sw=4 ts=4 fdm=marker
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* vim<600: expandtab sw=4 ts=4
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*/
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