/* SPDX-License-Identifier: GPL-2.0 */
#include <tracefs.h>
#include <stdbool.h>

enum action_type {
        ACTION_NONE = 0,
        ACTION_TRACE_OUTPUT,
        ACTION_SIGNAL,
        ACTION_SHELL,
        ACTION_CONTINUE,
        ACTION_FIELD_N
};

struct action {
        enum action_type type;
        union {
                struct {
                        /* For ACTION_TRACE_OUTPUT */
                        char *trace_output;
                };
                struct {
                        /* For ACTION_SIGNAL */
                        int signal;
                        int pid;
                };
                struct {
                        /* For ACTION_SHELL */
                        char *command;
                };
        };
};

static const int action_default_size = 8;

struct actions {
        struct action *list;
        int len, size;
        bool present[ACTION_FIELD_N];
        bool continue_flag;

        /* External dependencies */
        struct tracefs_instance *trace_output_inst;
};

#define for_each_action(actions, action)                        \
        for ((action) = (actions)->list;                        \
             (action) < (actions)->list + (actions)->len;       \
             (action)++)

void actions_init(struct actions *self);
void actions_destroy(struct actions *self);
int actions_add_trace_output(struct actions *self, const char *trace_output);
int actions_add_signal(struct actions *self, int signal, int pid);
int actions_add_shell(struct actions *self, const char *command);
int actions_add_continue(struct actions *self);
int actions_parse(struct actions *self, const char *trigger, const char *tracefn);
int actions_perform(struct actions *self);