size_t nbd_wr_sync(int fd, void *buffer, size_t size, bool do_read)

{

    size_t offset = 0;



    if (qemu_in_coroutine()) {

        if (do_read) {

            return qemu_co_recv(fd, buffer, size);

        } else {

            return qemu_co_send(fd, buffer, size);

        }

    }



    while (offset < size) {

        ssize_t len;



        if (do_read) {

            len = qemu_recv(fd, buffer + offset, size - offset, 0);

        } else {

            len = send(fd, buffer + offset, size - offset, 0);

        }



        if (len == -1)

            errno = socket_error();



        /* recoverable error */

        if (len == -1 && (errno == EAGAIN || errno == EINTR)) {

            continue;

        }



        /* eof */

        if (len == 0) {

            break;

        }



        /* unrecoverable error */

        if (len == -1) {

            return 0;

        }



        offset += len;

    }



    return offset;

}

size_t nbd_wr_sync(int fd, void *buffer, size_t size, bool do_read)

{

    size_t offset = 0;



    if (qemu_in_coroutine()) {

        if (do_read) {

            return qemu_co_recv(fd, buffer, size);

        } else {

            return qemu_co_send(fd, buffer, size);

        }

    }



    while (offset < size) {

        ssize_t len;



        if (do_read) {

            len = qemu_recv(fd, buffer + offset, size - offset, 0);

        } else {

            len = send(fd, buffer + offset, size - offset, 0);

        }



        if (len == -1)

            errno = socket_error();



        

        if (len == -1 && (errno == EAGAIN || errno == EINTR)) {

            continue;

        }



        

        if (len == 0) {

            break;

        }



        

        if (len == -1) {

            return 0;

        }



        offset += len;

    }



    return offset;

}

size_t FUNC_0(int fd, void *buffer, size_t size, bool do_read)

{

    size_t offset = 0;



    if (qemu_in_coroutine()) {

        if (do_read) {

            return qemu_co_recv(fd, buffer, size);

        } else {

            return qemu_co_send(fd, buffer, size);

        }

    }



    while (offset < size) {

        ssize_t len;



        if (do_read) {

            len = qemu_recv(fd, buffer + offset, size - offset, 0);

        } else {

            len = send(fd, buffer + offset, size - offset, 0);

        }



        if (len == -1)

            errno = socket_error();



        

        if (len == -1 && (errno == EAGAIN || errno == EINTR)) {

            continue;

        }



        

        if (len == 0) {

            break;

        }



        

        if (len == -1) {

            return 0;

        }



        offset += len;

    }



    return offset;

}

size_t FUNC_0(int fd, void *buffer, size_t size, bool do_read)
{ size_t offset = 0; if (qemu_in_coroutine()) { if (do_read) { return qemu_co_recv(fd, buffer, size); } else { return qemu_co_send(fd, buffer, size); } } while (offset < size) { ssize_t len; if (do_read) { len = qemu_recv(fd, buffer + offset, size - offset, 0); } else { len = send(fd, buffer + offset, size - offset, 0); } if (len == -1)
errno = socket_error(); if (len == -1 && (errno == EAGAIN || errno == EINTR)) { continue; } if (len == 0) { break; } if (len == -1) { return 0; } offset += len; } return offset; }