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s3fs-fuse/src/common.h

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/*
* s3fs - FUSE-based file system backed by Amazon S3
*
* Copyright 2007-2008 Randy Rizun <rrizun@gmail.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef S3FS_COMMON_H_
#define S3FS_COMMON_H_
#include "../config.h"
//
// Extended attribute
//
#ifdef HAVE_SYS_EXTATTR_H
#include <sys/extattr.h>
#elif HAVE_ATTR_XATTR_H
#include <attr/xattr.h>
#elif HAVE_SYS_XATTR_H
#include <sys/xattr.h>
#endif
//
// Macro
//
#define SAFESTRPTR(strptr) (strptr ? strptr : "")
//
// Debug level
//
enum s3fs_log_level{
S3FS_LOG_CRIT = 0, // LOG_CRIT
S3FS_LOG_ERR = 1, // LOG_ERR
S3FS_LOG_WARN = 3, // LOG_WARNING
S3FS_LOG_INFO = 7, // LOG_INFO
S3FS_LOG_DBG = 15 // LOG_DEBUG
};
//
// Debug macros
//
#define IS_S3FS_LOG_CRIT() (S3FS_LOG_CRIT == debug_level)
#define IS_S3FS_LOG_ERR() (S3FS_LOG_ERR == (debug_level & S3FS_LOG_DBG))
#define IS_S3FS_LOG_WARN() (S3FS_LOG_WARN == (debug_level & S3FS_LOG_DBG))
#define IS_S3FS_LOG_INFO() (S3FS_LOG_INFO == (debug_level & S3FS_LOG_DBG))
#define IS_S3FS_LOG_DBG() (S3FS_LOG_DBG == (debug_level & S3FS_LOG_DBG))
#define S3FS_LOG_LEVEL_TO_SYSLOG(level) \
( S3FS_LOG_DBG == (level & S3FS_LOG_DBG) ? LOG_DEBUG : \
S3FS_LOG_INFO == (level & S3FS_LOG_DBG) ? LOG_INFO : \
S3FS_LOG_WARN == (level & S3FS_LOG_DBG) ? LOG_WARNING : \
S3FS_LOG_ERR == (level & S3FS_LOG_DBG) ? LOG_ERR : LOG_CRIT )
#define S3FS_LOG_LEVEL_STRING(level) \
( S3FS_LOG_DBG == (level & S3FS_LOG_DBG) ? "[DBG] " : \
S3FS_LOG_INFO == (level & S3FS_LOG_DBG) ? "[INF] " : \
S3FS_LOG_WARN == (level & S3FS_LOG_DBG) ? "[WAN] " : \
S3FS_LOG_ERR == (level & S3FS_LOG_DBG) ? "[ERR] " : "[CRT] " )
#define S3FS_LOG_NEST_MAX 4
#define S3FS_LOG_NEST(nest) (nest < S3FS_LOG_NEST_MAX ? s3fs_log_nest[nest] : s3fs_log_nest[S3FS_LOG_NEST_MAX - 1])
#define S3FS_LOW_LOGPRN(level, fmt, ...) \
if(S3FS_LOG_CRIT == level || (S3FS_LOG_CRIT != debug_level && level == (debug_level & level))){ \
if(foreground){ \
fprintf(stdout, "%s%s:%s(%d): " fmt "%s\n", S3FS_LOG_LEVEL_STRING(level), __FILE__, __func__, __LINE__, __VA_ARGS__); \
}else{ \
syslog(S3FS_LOG_LEVEL_TO_SYSLOG(level), "%s:%s(%d): " fmt "%s", __FILE__, __func__, __LINE__, __VA_ARGS__); \
} \
}
#define S3FS_LOW_LOGPRN2(level, nest, fmt, ...) \
if(S3FS_LOG_CRIT == level || (S3FS_LOG_CRIT != debug_level && level == (debug_level & level))){ \
if(foreground){ \
fprintf(stdout, "%s%s%s:%s(%d): " fmt "%s\n", S3FS_LOG_LEVEL_STRING(level), S3FS_LOG_NEST(nest), __FILE__, __func__, __LINE__, __VA_ARGS__); \
}else{ \
syslog(S3FS_LOG_LEVEL_TO_SYSLOG(level), "%s" fmt "%s", S3FS_LOG_NEST(nest), __VA_ARGS__); \
} \
}
#define S3FS_LOW_LOGPRN_EXIT(fmt, ...) \
if(foreground){ \
fprintf(stderr, "s3fs: " fmt "%s\n", __VA_ARGS__); \
}else{ \
fprintf(stderr, "s3fs: " fmt "%s\n", __VA_ARGS__); \
syslog(S3FS_LOG_LEVEL_TO_SYSLOG(S3FS_LOG_CRIT), "s3fs: " fmt "%s", __VA_ARGS__); \
}
// [NOTE]
// small trick for VA_ARGS
//
#define S3FS_PRN_EXIT(fmt, ...) S3FS_LOW_LOGPRN_EXIT(fmt, ##__VA_ARGS__, "")
#define S3FS_PRN_CRIT(fmt, ...) S3FS_LOW_LOGPRN(S3FS_LOG_CRIT, fmt, ##__VA_ARGS__, "")
#define S3FS_PRN_ERR(fmt, ...) S3FS_LOW_LOGPRN(S3FS_LOG_ERR, fmt, ##__VA_ARGS__, "")
#define S3FS_PRN_WARN(fmt, ...) S3FS_LOW_LOGPRN(S3FS_LOG_WARN, fmt, ##__VA_ARGS__, "")
#define S3FS_PRN_DBG(fmt, ...) S3FS_LOW_LOGPRN(S3FS_LOG_DBG, fmt, ##__VA_ARGS__, "")
#define S3FS_PRN_INFO(fmt, ...) S3FS_LOW_LOGPRN2(S3FS_LOG_INFO, 0, fmt, ##__VA_ARGS__, "")
#define S3FS_PRN_INFO0(fmt, ...) S3FS_LOG_INFO(fmt, __VA_ARGS__)
#define S3FS_PRN_INFO1(fmt, ...) S3FS_LOW_LOGPRN2(S3FS_LOG_INFO, 1, fmt, ##__VA_ARGS__, "")
#define S3FS_PRN_INFO2(fmt, ...) S3FS_LOW_LOGPRN2(S3FS_LOG_INFO, 2, fmt, ##__VA_ARGS__, "")
#define S3FS_PRN_INFO3(fmt, ...) S3FS_LOW_LOGPRN2(S3FS_LOG_INFO, 3, fmt, ##__VA_ARGS__, "")
#define S3FS_PRN_CURL(fmt, ...) S3FS_LOW_LOGPRN2(S3FS_LOG_CRIT, 0, fmt, ##__VA_ARGS__, "")
//
// Typedef
//
struct header_nocase_cmp : public std::binary_function<std::string, std::string, bool>{
bool operator()(const std::string &strleft, const std::string &strright) const
{
return (strcasecmp(strleft.c_str(), strright.c_str()) < 0);
}
};
typedef std::map<std::string, std::string, header_nocase_cmp> headers_t;
//
// Header "x-amz-meta-xattr" is for extended attributes.
// This header is url encoded string which is json formatted.
// x-amz-meta-xattr:urlencode({"xattr-1":"base64(value-1)","xattr-2":"base64(value-2)","xattr-3":"base64(value-3)"})
//
typedef struct xattr_value{
unsigned char* pvalue;
size_t length;
explicit xattr_value(unsigned char* pval = NULL, size_t len = 0) : pvalue(pval), length(len) {}
~xattr_value()
{
if(pvalue){
free(pvalue);
}
}
}XATTRVAL, *PXATTRVAL;
typedef std::map<std::string, PXATTRVAL> xattrs_t;
//
// Global variables
//
extern bool foreground;
extern bool nomultipart;
extern bool pathrequeststyle;
extern std::string program_name;
extern std::string service_path;
extern std::string host;
extern std::string bucket;
extern std::string mount_prefix;
extern std::string endpoint;
extern s3fs_log_level debug_level;
extern const char* s3fs_log_nest[S3FS_LOG_NEST_MAX];
#endif // S3FS_COMMON_H_
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: noet sw=4 ts=4 fdm=marker
* vim<600: noet sw=4 ts=4
*/
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