err = os_read_file(aio->fd, &c, sizeof(c)); 
err = os_read_file(req->io_fd, &c, sizeof(c)); 
static int do_not_aio(struct aio_context *aio){        char c;        int err;        switch(aio->type){        case AIO_READ:                err = os_seek_file(aio->fd, aio->offset);                if(err)                        goto out;                err = os_read_file(aio->fd, aio->data, aio->len);                break;        case AIO_WRITE:                err = os_seek_file(aio->fd, aio->offset);                if(err)                        goto out;                err = os_write_file(aio->fd, aio->data, aio->len);                break;        case AIO_MMAP:                err = os_seek_file(aio->fd, aio->offset);                if(err)                        goto out;                err = os_read_file(aio->fd, &c, sizeof(c));                break;        default:                printk("do_not_aio - bad request type : %d\n", aio->type);                err = -EINVAL;                break;        } out:        return err;}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/91acb21f084aa244f26839406ae7ed8aa3668058/aio.c/buggy/arch/um/os-Linux/aio.c