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migration-test: Add a test for fd protocol

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Signed-off-by: Yury Kotov <yury-kotov@yandex-team.ru>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Yury Kotov 2019-05-28 12:16:33 +03:00 • committed by Juan Quintela
parent 61053d4826
commit 24d5588c86
3 changed files with 227 additions and 5 deletions
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80
tests/libqtest.c
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@ -32,6 +32,7 @@
#define MAX_IRQ 256
#define SOCKET_TIMEOUT 50
#define SOCKET_MAX_FDS 16
QTestState *global_qtest;
@ -391,6 +392,40 @@ static void GCC_FMT_ATTR(2, 3) qtest_sendf(QTestState *s, const char *fmt, ...)
va_end(ap);
}
/* Sends a message and file descriptors to the socket.
* It's needed for qmp-commands like getfd/add-fd */
static void socket_send_fds(int socket_fd, int *fds, size_t fds_num,
const char *buf, size_t buf_size)
{
ssize_t ret;
struct msghdr msg = { 0 };
char control[CMSG_SPACE(sizeof(int) * SOCKET_MAX_FDS)] = { 0 };
size_t fdsize = sizeof(int) * fds_num;
struct cmsghdr *cmsg;
struct iovec iov = { .iov_base = (char *)buf, .iov_len = buf_size };
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
if (fds && fds_num > 0) {
g_assert_cmpuint(fds_num, <, SOCKET_MAX_FDS);
msg.msg_control = control;
msg.msg_controllen = CMSG_SPACE(fdsize);
cmsg = CMSG_FIRSTHDR(&msg);
cmsg->cmsg_len = CMSG_LEN(fdsize);
cmsg->cmsg_level = SOL_SOCKET;
cmsg->cmsg_type = SCM_RIGHTS;
memcpy(CMSG_DATA(cmsg), fds, fdsize);
}
do {
ret = sendmsg(socket_fd, &msg, 0);
} while (ret < 0 && errno == EINTR);
g_assert_cmpint(ret, >, 0);
}
static GString *qtest_recv_line(QTestState *s)
{
GString *line;
@ -545,7 +580,8 @@ QDict *qtest_qmp_receive(QTestState *s)
* in the case that they choose to discard all replies up until
* a particular EVENT is received.
*/
void qmp_fd_vsend(int fd, const char *fmt, va_list ap)
void qmp_fd_vsend_fds(int fd, int *fds, size_t fds_num,
const char *fmt, va_list ap)
{
QObject *qobj;
@ -569,25 +605,49 @@ void qmp_fd_vsend(int fd, const char *fmt, va_list ap)
fprintf(stderr, "%s", str);
}
/* Send QMP request */
socket_send(fd, str, qstring_get_length(qstr));
if (fds && fds_num > 0) {
socket_send_fds(fd, fds, fds_num, str, qstring_get_length(qstr));
} else {
socket_send(fd, str, qstring_get_length(qstr));
}
qobject_unref(qstr);
qobject_unref(qobj);
}
}
void qmp_fd_vsend(int fd, const char *fmt, va_list ap)
{
qmp_fd_vsend_fds(fd, NULL, 0, fmt, ap);
}
void qtest_qmp_vsend_fds(QTestState *s, int *fds, size_t fds_num,
const char *fmt, va_list ap)
{
qmp_fd_vsend_fds(s->qmp_fd, fds, fds_num, fmt, ap);
}
void qtest_qmp_vsend(QTestState *s, const char *fmt, va_list ap)
{
qmp_fd_vsend(s->qmp_fd, fmt, ap);
qmp_fd_vsend_fds(s->qmp_fd, NULL, 0, fmt, ap);
}
QDict *qmp_fdv(int fd, const char *fmt, va_list ap)
{
qmp_fd_vsend(fd, fmt, ap);
qmp_fd_vsend_fds(fd, NULL, 0, fmt, ap);
return qmp_fd_receive(fd);
}
QDict *qtest_vqmp_fds(QTestState *s, int *fds, size_t fds_num,
const char *fmt, va_list ap)
{
qtest_qmp_vsend_fds(s, fds, fds_num, fmt, ap);
/* Receive reply */
return qtest_qmp_receive(s);
}
QDict *qtest_vqmp(QTestState *s, const char *fmt, va_list ap)
{
qtest_qmp_vsend(s, fmt, ap);
@ -616,6 +676,18 @@ void qmp_fd_send(int fd, const char *fmt, ...)
va_end(ap);
}
QDict *qtest_qmp_fds(QTestState *s, int *fds, size_t fds_num,
const char *fmt, ...)
{
va_list ap;
QDict *response;
va_start(ap, fmt);
response = qtest_vqmp_fds(s, fds, fds_num, fmt, ap);
va_end(ap);
return response;
}
QDict *qtest_qmp(QTestState *s, const char *fmt, ...)
{
va_list ap;