24 #include <sys/types.h> 
   27 #include <sys/ioctl.h> 
   36 "Usage: fioclient FIOC_FILE [size]\n" 
   38 "Get size if <size> is omitted, set size otherwise\n" 
   41 int main(
int argc, 
char **argv)
 
   48                 fprintf(stderr, 
"%s", usage);
 
   52         fd = open(argv[1], O_RDWR);
 
   59                 if (ioctl(fd, FIOC_GET_SIZE, &size)) {
 
   64                 printf(
"%zu\n", size);
 
   66                 size = strtoul(argv[2], NULL, 0);
 
   67                 if (ioctl(fd, FIOC_SET_SIZE, &size)) {