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/*
Unix SMB/CIFS implementation.
Samba debug defines
Copyright (C) Andrew Tridgell 2003
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 3 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, see <http://www.gnu.org/licenses/>.
*/
/**
* @file
* @brief Debugging macros
*/
/* the debug operations structure - contains function pointers to
various debug implementations of each operation */
struct debug_ops {
/* function to log (using DEBUG) suspicious usage of data structure */
void (*log_suspicious_usage)(const char* from, const char* info);
/* function to log (using printf) suspicious usage of data structure.
* To be used in circumstances when using DEBUG would cause loop. */
void (*print_suspicious_usage)(const char* from, const char* info);
/* function to return process/thread id */
uint32_t (*get_task_id)(void);
/* function to log process/thread id */
void (*log_task_id)(int fd);
};
extern int DEBUGLEVEL;
#define DEBUGLVL(level) ((level) <= DEBUGLEVEL)
#define _DEBUG(level, body, header) do { \
if (DEBUGLVL(level)) { \
if (header) { \
do_debug_header(level, __location__, __FUNCTION__); \
} \
do_debug body; \
} \
} while (0)
/**
* Write to the debug log.
*/
#define DEBUG(level, body) _DEBUG(level, body, true)
/**
* Add data to an existing debug log entry.
*/
#define DEBUGADD(level, body) _DEBUG(level, body, false)
/**
* Obtain indentation string for the debug log.
*
* Level specified by n.
*/
#define DEBUGTAB(n) do_debug_tab(n)
/** Possible destinations for the debug log */
enum debug_logtype {DEBUG_STDOUT = 0, DEBUG_FILE = 1, DEBUG_STDERR = 2};
/**
the backend for debug messages. Note that the DEBUG() macro has already
ensured that the log level has been met before this is called
*/
_PUBLIC_ void do_debug_header(int level, const char *location, const char *func);
/**
reopen the log file (usually called because the log file name might have changed)
*/
_PUBLIC_ void reopen_logs(void);
/**
* this global variable determines what messages are printed
*/
_PUBLIC_ void debug_schedule_reopen_logs(void);
/**
control the name of the logfile and whether logging will be to stdout, stderr
or a file
*/
_PUBLIC_ void setup_logging(const char *prog_name, enum debug_logtype new_logtype);
/**
return a string constant containing n tabs
no more than 10 tabs are returned
*/
_PUBLIC_ const char *do_debug_tab(int n);
/**
log suspicious usage - print comments and backtrace
*/
_PUBLIC_ void log_suspicious_usage(const char *from, const char *info);
/**
print suspicious usage - print comments and backtrace
*/
_PUBLIC_ void print_suspicious_usage(const char* from, const char* info);
_PUBLIC_ uint32_t get_task_id(void);
_PUBLIC_ void log_task_id(void);
/**
register a set of debug handlers.
*/
_PUBLIC_ void register_debug_handlers(const char *name, struct debug_ops *ops);
/**
the backend for debug messages. Note that the DEBUG() macro has already
ensured that the log level has been met before this is called
@note You should never have to call this function directly. Call the DEBUG()
macro instead.
*/
_PUBLIC_ void do_debug(const char *format, ...) _PRINTF_ATTRIBUTE(1,2);
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