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#ifndef UFTRACE_FILTER_H
#define UFTRACE_FILTER_H
#include <regex.h>
#include <stdint.h>
#include <stdio.h>
#include "utils/arch.h"
#include "utils/argspec.h"
#include "utils/list.h"
#include "utils/rbtree.h"
/**
* REGEX_CHARS: characters for regex matching.
*
* When one of these characters is in filter strings,
* treat them as regex expressions.
*/
#define REGEX_CHARS ".?*+-^$|()[]{}"
enum trigger_flag {
TRIGGER_FL_DEPTH = (1U << 0),
TRIGGER_FL_FILTER = (1U << 1),
TRIGGER_FL_BACKTRACE = (1U << 2),
TRIGGER_FL_TRACE = (1U << 3),
TRIGGER_FL_TRACE_ON = (1U << 4),
TRIGGER_FL_TRACE_OFF = (1U << 5),
TRIGGER_FL_ARGUMENT = (1U << 6),
TRIGGER_FL_RECOVER = (1U << 7),
TRIGGER_FL_RETVAL = (1U << 8),
TRIGGER_FL_COLOR = (1U << 9),
TRIGGER_FL_TIME_FILTER = (1U << 10),
TRIGGER_FL_READ = (1U << 11),
TRIGGER_FL_FINISH = (1U << 13),
TRIGGER_FL_AUTO_ARGS = (1U << 14),
TRIGGER_FL_CALLER = (1U << 15),
TRIGGER_FL_SIGNAL = (1U << 16),
TRIGGER_FL_HIDE = (1U << 17),
TRIGGER_FL_LOC = (1U << 18),
TRIGGER_FL_SIZE_FILTER = (1U << 19),
TRIGGER_FL_CLEAR = (1U << 20), /* Reverse other flags when set */
};
/**
* filter_mode - opt-in or opt-out mode
*
* When in opt-in mode, only trace functions that have an explicit filter. When
* in opt-out mode, trace all but explicitly excluded functions.
* @FILTER_MODE_NONE is neutral and is only used for initialization in the
* location filter.
*/
enum filter_mode {
FILTER_MODE_NONE,
FILTER_MODE_IN,
FILTER_MODE_OUT,
};
enum trigger_read_type {
TRIGGER_READ_NONE = 0,
TRIGGER_READ_PROC_STATM = 1,
TRIGGER_READ_PAGE_FAULT = 2,
TRIGGER_READ_PMU_CYCLE = 4,
TRIGGER_READ_PMU_CACHE = 8,
TRIGGER_READ_PMU_BRANCH = 16,
};
enum filter_cond_op {
FILTER_OP_EQ,
FILTER_OP_NE,
FILTER_OP_GT,
FILTER_OP_GE,
FILTER_OP_LT,
FILTER_OP_LE,
};
struct uftrace_filter_cond {
int idx; /* argument index, 0 if disabled */
enum filter_cond_op op;
long val;
};
struct uftrace_trigger {
enum trigger_flag flags;
enum trigger_flag clear_flags;
int depth;
char color;
uint64_t time;
unsigned size;
enum filter_mode fmode;
enum filter_mode lmode;
enum trigger_read_type read;
struct uftrace_filter_cond cond;
struct list_head *pargs;
};
struct uftrace_filter {
struct rb_node node;
char *name;
uint64_t start;
uint64_t end;
struct list_head args;
struct uftrace_trigger trigger;
};
enum uftrace_pattern_type {
PATT_NONE,
PATT_SIMPLE,
PATT_REGEX,
PATT_GLOB,
};
struct uftrace_pattern {
enum uftrace_pattern_type type;
char *patt;
regex_t re;
};
enum uftrace_trace_state {
TRACE_STATE_NONE,
TRACE_STATE_OFF,
TRACE_STATE_ON,
};
struct uftrace_filter_setting {
enum uftrace_pattern_type ptype;
enum uftrace_cpu_arch arch;
bool auto_args;
bool allow_kernel;
bool lp64;
bool plt_only;
/* caller-defined data */
void *info_str;
};
struct uftrace_triggers_info {
/* filters, trigger actions, arg/retval specs */
/* container type: struct uftrace_filter */
struct rb_root root;
/* count of registered opt-in filters (-F) */
int filter_count;
/* count of registered caller filters */
int caller_count;
/* count of registered opt-in location filters (-L) */
int loc_count;
};
typedef void (*trigger_fn_t)(struct uftrace_trigger *tr, void *arg);
struct uftrace_sym_info;
void uftrace_setup_filter(char *filter_str, struct uftrace_sym_info *sinfo,
struct uftrace_triggers_info *triggers,
struct uftrace_filter_setting *setting);
void uftrace_setup_trigger(char *trigger_str, struct uftrace_sym_info *sinfo,
struct uftrace_triggers_info *triggers,
struct uftrace_filter_setting *setting);
void uftrace_setup_argument(char *args_str, struct uftrace_sym_info *sinfo,
struct uftrace_triggers_info *triggers,
struct uftrace_filter_setting *setting);
void uftrace_setup_retval(char *retval_str, struct uftrace_sym_info *sinfo,
struct uftrace_triggers_info *triggers,
struct uftrace_filter_setting *setting);
void uftrace_setup_caller_filter(char *filter_str, struct uftrace_sym_info *sinfo,
struct uftrace_triggers_info *triggers,
struct uftrace_filter_setting *setting);
void uftrace_setup_hide_filter(char *filter_str, struct uftrace_sym_info *sinfo,
struct uftrace_triggers_info *triggers,
struct uftrace_filter_setting *setting);
void uftrace_setup_loc_filter(char *filter_str, struct uftrace_sym_info *sinfo,
struct uftrace_triggers_info *triggers,
struct uftrace_filter_setting *setting);
struct uftrace_triggers_info uftrace_deep_copy_triggers(struct uftrace_triggers_info *src);
struct uftrace_filter *uftrace_match_filter(uint64_t ip, struct rb_root *root,
struct uftrace_trigger *tr);
void uftrace_cleanup_filter(struct rb_root *root);
void uftrace_cleanup_triggers(struct uftrace_triggers_info *triggers);
void uftrace_print_filter(struct rb_root *root);
int uftrace_count_filter(struct rb_root *root, unsigned long flag);
bool uftrace_eval_cond(struct uftrace_filter_cond *cond, long val);
void init_filter_pattern(enum uftrace_pattern_type type, struct uftrace_pattern *p, char *str);
bool match_filter_pattern(struct uftrace_pattern *p, char *name);
void free_filter_pattern(struct uftrace_pattern *p);
enum uftrace_pattern_type parse_filter_pattern(const char *str);
const char *get_filter_pattern(enum uftrace_pattern_type ptype);
char *uftrace_clear_kernel(char *filter_str);
int setup_trigger_action(char *str, struct uftrace_trigger *tr, char **module,
unsigned long orig_flags, struct uftrace_filter_setting *setting);
#endif /* UFTRACE_FILTER_H */
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