#include <string.h>
#include <stdio.h>

#include <stdlib.h> /* getenv, exit */
#include <unistd.h>


#include <errno.h>

#include "common.h"
#include "message.h"

#include "buffer.h"

extern char link_task[];
extern pid_t Linkpid[NUMlinks];
extern pid_t Mergepid;

extern STATUS_TABLE *status_table;
extern LINK_TABLE *link_table[NUMlinks];

extern int LINKs;

void start_links()
{
      int i;
      int rcode;
      pid_t pid;
      char p1[10];
      char p2[10];

//    start the link tasks

printf("starting %d links\n",status_table->num_links);

   for (i = 0; i < status_table->num_links; i++) {

                pid = fork();
                if (pid == -1)  {
                   sprintf(message_buffer, "fork failed %d - This must be fixed - exiting.", errno);
                   report_message(MSG_FAILURE);
                   exit(1);
                }
                if (pid == 0) {

//    this is the child process - use exec to overlay the driver code

                   sprintf(p1, "%d", i);
                   sprintf(p2, "%d", Mergepid);

                   rcode = execl(link_task, link_task, "-i", p1, "-m", p2, NULL);

                   sprintf(message_buffer, "Link task %s returned %d - %s.", link_task, errno, strerror(errno));
                   report_message(MSG_FAILURE);

                   return;
                }

                link_table[i]->link_status = INUSE;
                link_table[i]->link_pid = pid;
                
                Linkpid[i] = pid;
                status_table->link_pid[i] = pid;

                sprintf(message_buffer, "Link task has pid %d", pid);
                report_message(MSG_INFORMATION);
    }
}