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#ifndef _OSMOCORE_LOGGING_H
#define _OSMOCORE_LOGGING_H
/*! \file logging.h
* \brief Osmocom logging framework
*/
#include <stdio.h>
#include <stdint.h>
#include <osmocom/core/linuxlist.h>
/*! \brief Maximum number of logging contexts */
#define LOG_MAX_CTX 8
/*! \brief Maximum number of logging filters */
#define LOG_MAX_FILTERS 8
#define DEBUG
#ifdef DEBUG
#define DEBUGP(ss, fmt, args...) logp(ss, __FILE__, __LINE__, 0, fmt, ## args)
#define DEBUGPC(ss, fmt, args...) logp(ss, __FILE__, __LINE__, 1, fmt, ## args)
#else
#define DEBUGP(xss, fmt, args...)
#define DEBUGPC(ss, fmt, args...)
#endif
void logp(int subsys, char *file, int line, int cont, const char *format, ...) __attribute__ ((format (printf, 5, 6)));
/*! \brief Log a new message through the Osmocom logging framework
* \param[in] ss logging subsystem (e.g. \ref DLGLOBAL)
* \param[in] level logging level (e.g. \ref LOGL_NOTICE)
* \param[in] fmt format string
* \param[in] args variable argument list
*/
#define LOGP(ss, level, fmt, args...) \
logp2(ss, level, __FILE__, __LINE__, 0, fmt, ##args)
/*! \brief Continue a log message through the Osmocom logging framework
* \param[in] ss logging subsystem (e.g. \ref DLGLOBAL)
* \param[in] level logging level (e.g. \ref LOGL_NOTICE)
* \param[in] fmt format string
* \param[in] args variable argument list
*/
#define LOGPC(ss, level, fmt, args...) \
logp2(ss, level, __FILE__, __LINE__, 1, fmt, ##args)
/* different levels */
#define LOGL_DEBUG 1 /* debugging information */
#define LOGL_INFO 3
#define LOGL_NOTICE 5 /* abnormal/unexpected condition */
#define LOGL_ERROR 7 /* error condition, requires user action */
#define LOGL_FATAL 8 /* fatal, program aborted */
#define LOG_FILTER_ALL 0x0001
/* logging levels defined by the library itself */
#define DLGLOBAL -1
#define DLLAPDM -2
#define DLINP -3
#define DLMUX -4
#define DLMI -5
#define DLMIB -6
#define OSMO_NUM_DLIB 6
struct log_category {
uint8_t loglevel;
uint8_t enabled;
};
struct log_info_cat {
const char *name;
const char *color;
const char *description;
uint8_t loglevel;
uint8_t enabled;
};
/* log context information, passed to filter */
struct log_context {
void *ctx[LOG_MAX_CTX+1];
};
struct log_target;
typedef int log_filter(const struct log_context *ctx,
struct log_target *target);
struct log_info {
/* filter callback function */
log_filter *filter_fn;
/* per-category information */
struct log_info_cat *cat;
unsigned int num_cat;
unsigned int num_cat_user;
};
enum log_target_type {
LOG_TGT_TYPE_VTY,
LOG_TGT_TYPE_SYSLOG,
LOG_TGT_TYPE_FILE,
LOG_TGT_TYPE_STDERR,
};
struct log_target {
struct llist_head entry;
int filter_map;
void *filter_data[LOG_MAX_FILTERS+1];
struct log_category *categories;
uint8_t loglevel;
unsigned int use_color:1;
unsigned int print_timestamp:1;
enum log_target_type type;
union {
struct {
FILE *out;
const char *fname;
} tgt_file;
struct {
int priority;
int facility;
} tgt_syslog;
struct {
void *vty;
} tgt_vty;
};
void (*output) (struct log_target *target, unsigned int level,
const char *string);
};
/* use the above macros */
void logp2(int subsys, unsigned int level, char *file,
int line, int cont, const char *format, ...)
__attribute__ ((format (printf, 6, 7)));
int log_init(const struct log_info *inf, void *talloc_ctx);
/* context management */
void log_reset_context(void);
int log_set_context(uint8_t ctx, void *value);
/* filter on the targets */
void log_set_all_filter(struct log_target *target, int);
void log_set_use_color(struct log_target *target, int);
void log_set_print_timestamp(struct log_target *target, int);
void log_set_log_level(struct log_target *target, int log_level);
void log_parse_category_mask(struct log_target *target, const char* mask);
int log_parse_level(const char *lvl);
const char *log_level_str(unsigned int lvl);
int log_parse_category(const char *category);
void log_set_category_filter(struct log_target *target, int category,
int enable, int level);
/* management of the targets */
struct log_target *log_target_create(void);
void log_target_destroy(struct log_target *target);
struct log_target *log_target_create_stderr(void);
struct log_target *log_target_create_file(const char *fname);
struct log_target *log_target_create_syslog(const char *ident, int option,
int facility);
int log_target_file_reopen(struct log_target *tgt);
/*! \brief Add a new logging target
*/
void log_add_target(struct log_target *target);
/*! \brief Deelete an existing logging target
*/
void log_del_target(struct log_target *target);
/* Generate command string for VTY use */
const char *log_vty_command_string(const struct log_info *info);
const char *log_vty_command_description(const struct log_info *info);
struct log_target *log_target_find(int type, const char *fname);
extern struct llist_head osmo_log_target_list;
#endif /* _OSMOCORE_LOGGING_H */
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