#include <errno.h> 
#include <fcntl.h> 
#include <signal.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
#include "asyncmonitorsignal.h"
#define BLKSIZE 1024
#define MODE (S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)

void dowork(void);
 
int main(int argc, char *argv[]) {
   char buf[BLKSIZE];
   int done = 0;
   int error;
   int fd1;
   int fd2;
                                        /* open the file descriptors for I/O */
   if (argc != 3) {
      fprintf(stderr, "Usage: %s filename1 filename2\n", argv[0]);
      return 1; 
   }
   if ((fd1 = open(argv[1], O_RDONLY)) == -1) {
      fprintf(stderr, "Failed to open %s:%s\n", argv[1], strerror(errno));
      return 1; 
   }
   if ((fd2 = open(argv[2], O_WRONLY | O_CREAT | O_TRUNC, MODE)) == -1) {
      fprintf(stderr, "Failed to open %s: %s\n", argv[2], strerror(errno));
      return 1;
   }
   if (initsignal(SIGRTMAX) == -1) {
      perror("Failed to initialize signal");
      return 1;
   }
   if (initread(fd1, fd2, SIGRTMAX, buf, BLKSIZE) == -1) {
      perror("Failed to initate the first read");
      return 1;
   }
   for ( ; ; ) {
      dowork();
      if (!done)
         if (done = getdone())
            if (error = geterror())
               fprintf(stderr, "Failed to copy file:%s\n", strerror(error));
            else
               fprintf(stderr, "Copy successful, %d bytes\n", getbytes());
   }
}