Beispiel #1
0
int main (int argc, char** argv)
{
  int src;               /* file descriptor for source file */
  int dest;              /* file descriptor for destination file */
  struct stat stat_buf;  /* hold information about input file */
  off_t offset = 0;      /* byte offset used by sendfile */
  ssize_t rc;            /* return code from sendfile */

  mill_init(-1, -1);
  int done = 0;
  go(dot(&done));

  /* check for two command line arguments */
  if (argc != 3) {
    fprintf(stderr, "usage: %s <source> <destination>\n", argv[0]);
    exit(1);
  }

  /* check that source file exists and can be opened */
  src = open_a(argv[1], O_RDONLY, 0);
  if (src == -1) {
    fprintf(stderr, "unable to open '%s': %s\n", argv[1], strerror(errno));
    exit(1);
  }

 /* get size and permissions of the source file */
  fstat_a(src, &stat_buf);

 /* open destination file */
  dest = open_a(argv[2], O_WRONLY|O_CREAT, stat_buf.st_mode);
  if (dest == -1) {
    fprintf(stderr, "unable to open '%s': %s\n", argv[2], strerror(errno));
    exit(1);
  }

 /* copy file using sendfile */
 rc = sendfile_a(dest, src, &offset, stat_buf.st_size);
 if (rc == -1) {
    fprintf(stderr, "error from sendfile: %s\n", strerror(errno));
    exit(1);
 }
 if (rc != stat_buf.st_size) {
   fprintf(stderr, "incomplete transfer from sendfile: %d of %d bytes\n",
           (int) rc,
           (int)stat_buf.st_size);
   exit(1);
 }

 /* clean up and exit */
 close_a(dest);
 close_a(src);

 done = 1;
 mill_waitall(-1);
 return 0;
}
static void cable_vpi_close ( void )
{
  if ( connection_socket != -1 )
    close_a( connection_socket );
}