Example to monitor ptpd2

The following code snippet shows how to begin monitoring the ptpd2 process:

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/netmgr.h>
#include <fcntl.h>
#include <ha/ham.h>

int main(int argc, char *argv[])
{
    ham_entity_t *ehdl;
    ham_condition_t *chdl;
    ham_action_t *ahdl;

    char *ptpd2_path = "/usr/sbin/ptpd2 -K";

    ham_connect(0);
    ehdl = ham_attach("ptpd2", 0, -1, ptpd2_path, 0);
    if (ehdl != NULL) {
        chdl = ham_condition(ehdl,CONDDEATH, "death", HREARMAFTERRESTART);
        if (chdl != NULL) {
            ahdl = ham_action_restart(chdl, "restart", ptpd2_path,
                    HREARMAFTERRESTART);
            if (ahdl == NULL) {
                printf("add action failed\n");
            }
        } else {
            printf("add condition failed\n");
        }
    } else {
        printf("add entity failed\n");
    }
    ham_disconnect(0);
    exit(0);
}