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Merge QEMU I/O 2017/09/05 v2 

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Merge remote-tracking branch 'remotes/berrange/tags/pull-qio-20170905-2' into staging

Merge QEMU I/O 2017/09/05 v2

# gpg: Signature made Tue 05 Sep 2017 13:22:36 BST
# gpg:                using RSA key 0xBE86EBB415104FDF
# gpg: Good signature from "Daniel P. Berrange <dan@berrange.com>"
# gpg:                 aka "Daniel P. Berrange <berrange@redhat.com>"
# Primary key fingerprint: DAF3 A6FD B26B 6291 2D0E  8E3F BE86 EBB4 1510 4FDF

* remotes/berrange/tags/pull-qio-20170905-2:
  io: fix check for handshake completion in TLS test
  io: add new qio_channel_{readv, writev, read, write}_all functions
  io: fix typo in docs comment for qio_channel_read
  util: remove the obsolete non-blocking connect
  io: fix temp directory used by test-io-channel-tls test

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2017-09-05 14:14:32 +01:00
parent 53e2c48d3f 689ed13e73
commit d3e3447d3d
9 changed files with 225 additions and 292 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
block/sheepdog.c
View File

@ -591,7 +591,7 @@ static int connect_to_sdog(BDRVSheepdogState *s, Error **errp)
{
int fd;
fd = socket_connect(s->addr, NULL, NULL, errp);
fd = socket_connect(s->addr, errp);
if (s->addr->type == SOCKET_ADDRESS_TYPE_INET && fd >= 0) {
int ret = socket_set_nodelay(fd);

2
block/ssh.c
View File

@ -678,7 +678,7 @@ static int connect_to_ssh(BDRVSSHState *s, QDict *options,
}
/* Open the socket and connect. */
s->sock = inet_connect_saddr(s->inet, NULL, NULL, errp);
s->sock = inet_connect_saddr(s->inet, errp);
if (s->sock < 0) {
ret = -EIO;
goto err;

92
include/io/channel.h
View File

@ -268,6 +268,58 @@ ssize_t qio_channel_writev_full(QIOChannel *ioc,
size_t nfds,
Error **errp);
/**
* qio_channel_readv_all:
* @ioc: the channel object
* @iov: the array of memory regions to read data into
* @niov: the length of the @iov array
* @errp: pointer to a NULL-initialized error object
*
* Read data from the IO channel, storing it in the
* memory regions referenced by @iov. Each element
* in the @iov will be fully populated with data
* before the next one is used. The @niov parameter
* specifies the total number of elements in @iov.
*
* The function will wait for all requested data
* to be read, yielding from the current coroutine
* if required.
*
* If end-of-file occurs before all requested data
* has been read, an error will be reported.
*
* Returns: 0 if all bytes were read, or -1 on error
*/
int qio_channel_readv_all(QIOChannel *ioc,
const struct iovec *iov,
size_t niov,
Error **errp);
/**
* qio_channel_writev_all:
* @ioc: the channel object
* @iov: the array of memory regions to write data from
* @niov: the length of the @iov array
* @errp: pointer to a NULL-initialized error object
*
* Write data to the IO channel, reading it from the
* memory regions referenced by @iov. Each element
* in the @iov will be fully sent, before the next
* one is used. The @niov parameter specifies the
* total number of elements in @iov.
*
* The function will wait for all requested data
* to be written, yielding from the current coroutine
* if required.
*
* Returns: 0 if all bytes were written, or -1 on error
*/
int qio_channel_writev_all(QIOChannel *ioc,
const struct iovec *iov,
size_t niov,
Error **erp);
/**
* qio_channel_readv:
* @ioc: the channel object
@ -299,7 +351,7 @@ ssize_t qio_channel_writev(QIOChannel *ioc,
Error **errp);
/**
* qio_channel_readv:
* qio_channel_read:
* @ioc: the channel object
* @buf: the memory region to read data into
* @buflen: the length of @buf
@ -330,6 +382,44 @@ ssize_t qio_channel_write(QIOChannel *ioc,
size_t buflen,
Error **errp);
/**
* qio_channel_read_all:
* @ioc: the channel object
* @buf: the memory region to read data into
* @buflen: the number of bytes to @buf
* @errp: pointer to a NULL-initialized error object
*
* Reads @buflen bytes into @buf, possibly blocking or (if the
* channel is non-blocking) yielding from the current coroutine
* multiple times until the entire content is read. If end-of-file
* occurs it will return an error rather than a short-read. Otherwise
* behaves as qio_channel_read().
*
* Returns: 0 if all bytes were read, or -1 on error
*/
int qio_channel_read_all(QIOChannel *ioc,
char *buf,
size_t buflen,
Error **errp);
/**
* qio_channel_write_all:
* @ioc: the channel object
* @buf: the memory region to write data into
* @buflen: the number of bytes to @buf
* @errp: pointer to a NULL-initialized error object
*
* Writes @buflen bytes from @buf, possibly blocking or (if the
* channel is non-blocking) yielding from the current coroutine
* multiple times until the entire content is written. Otherwise
* behaves as qio_channel_write().
*
* Returns: 0 if all bytes were written, or -1 on error
*/
int qio_channel_write_all(QIOChannel *ioc,
const char *buf,
size_t buflen,
Error **errp);
/**
* qio_channel_set_blocking:
* @ioc: the channel object

12
include/qemu/sockets.h
View File

@ -27,18 +27,11 @@ int socket_set_fast_reuse(int fd);
#define SHUT_RDWR 2
#endif
/* callback function for nonblocking connect
* valid fd on success, negative error code on failure
*/
typedef void NonBlockingConnectHandler(int fd, Error *err, void *opaque);
int inet_ai_family_from_address(InetSocketAddress *addr,
Error **errp);
int inet_parse(InetSocketAddress *addr, const char *str, Error **errp);
int inet_connect(const char *str, Error **errp);
int inet_connect_saddr(InetSocketAddress *saddr,
NonBlockingConnectHandler *callback, void *opaque,
Error **errp);
int inet_connect_saddr(InetSocketAddress *saddr, Error **errp);
NetworkAddressFamily inet_netfamily(int family);
@ -46,8 +39,7 @@ int unix_listen(const char *path, char *ostr, int olen, Error **errp);
int unix_connect(const char *path, Error **errp);
SocketAddress *socket_parse(const char *str, Error **errp);
int socket_connect(SocketAddress *addr, NonBlockingConnectHandler *callback,
void *opaque, Error **errp);
int socket_connect(SocketAddress *addr, Error **errp);
int socket_listen(SocketAddress *addr, Error **errp);
void socket_listen_cleanup(int fd, Error **errp);
int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp);

2
io/channel-socket.c
View File

@ -140,7 +140,7 @@ int qio_channel_socket_connect_sync(QIOChannelSocket *ioc,
int fd;
trace_qio_channel_socket_connect_sync(ioc, addr);
fd = socket_connect(addr, NULL, NULL, errp);
fd = socket_connect(addr, errp);
if (fd < 0) {
trace_qio_channel_socket_connect_fail(ioc);
return -1;

94
io/channel.c
View File

@ -22,6 +22,7 @@
#include "io/channel.h"
#include "qapi/error.h"
#include "qemu/main-loop.h"
#include "qemu/iov.h"
bool qio_channel_has_feature(QIOChannel *ioc,
QIOChannelFeature feature)
@ -85,6 +86,79 @@ ssize_t qio_channel_writev_full(QIOChannel *ioc,
}
int qio_channel_readv_all(QIOChannel *ioc,
const struct iovec *iov,
size_t niov,
Error **errp)
{
int ret = -1;
struct iovec *local_iov = g_new(struct iovec, niov);
struct iovec *local_iov_head = local_iov;
unsigned int nlocal_iov = niov;
nlocal_iov = iov_copy(local_iov, nlocal_iov,
iov, niov,
0, iov_size(iov, niov));
while (nlocal_iov > 0) {
ssize_t len;
len = qio_channel_readv(ioc, local_iov, nlocal_iov, errp);
if (len == QIO_CHANNEL_ERR_BLOCK) {
qio_channel_wait(ioc, G_IO_IN);
continue;
} else if (len < 0) {
goto cleanup;
} else if (len == 0) {
error_setg(errp,
"Unexpected end-of-file before all bytes were read");
goto cleanup;
}
iov_discard_front(&local_iov, &nlocal_iov, len);
}
ret = 0;
cleanup:
g_free(local_iov_head);
return ret;
}
int qio_channel_writev_all(QIOChannel *ioc,
const struct iovec *iov,
size_t niov,
Error **errp)
{
int ret = -1;
struct iovec *local_iov = g_new(struct iovec, niov);
struct iovec *local_iov_head = local_iov;
unsigned int nlocal_iov = niov;
nlocal_iov = iov_copy(local_iov, nlocal_iov,
iov, niov,
0, iov_size(iov, niov));
while (nlocal_iov > 0) {
ssize_t len;
len = qio_channel_writev(ioc, local_iov, nlocal_iov, errp);
if (len == QIO_CHANNEL_ERR_BLOCK) {
qio_channel_wait(ioc, G_IO_OUT);
continue;
}
if (len < 0) {
goto cleanup;
}
iov_discard_front(&local_iov, &nlocal_iov, len);
}
ret = 0;
cleanup:
g_free(local_iov_head);
return ret;
}
ssize_t qio_channel_readv(QIOChannel *ioc,
const struct iovec *iov,
size_t niov,
@ -123,6 +197,26 @@ ssize_t qio_channel_write(QIOChannel *ioc,
}
int qio_channel_read_all(QIOChannel *ioc,
char *buf,
size_t buflen,
Error **errp)
{
struct iovec iov = { .iov_base = buf, .iov_len = buflen };
return qio_channel_readv_all(ioc, &iov, 1, errp);
}
int qio_channel_write_all(QIOChannel *ioc,
const char *buf,
size_t buflen,
Error **errp)
{
struct iovec iov = { .iov_base = (char *)buf, .iov_len = buflen };
return qio_channel_writev_all(ioc, &iov, 1, errp);
}
int qio_channel_set_blocking(QIOChannel *ioc,
bool enabled,
Error **errp)

102
tests/io-channel-helpers.c
View File

@ -21,6 +21,7 @@
#include "qemu/osdep.h"
#include "io-channel-helpers.h"
#include "qapi/error.h"
#include "qemu/iov.h"
struct QIOChannelTest {
QIOChannel *src;
@ -37,77 +38,17 @@ struct QIOChannelTest {
};
static void test_skip_iovec(struct iovec **iov,
size_t *niov,
size_t skip,
struct iovec *old)
{
size_t offset = 0;
size_t i;
for (i = 0; i < *niov; i++) {
if (skip < (*iov)[i].iov_len) {
old->iov_len = (*iov)[i].iov_len;
old->iov_base = (*iov)[i].iov_base;
(*iov)[i].iov_len -= skip;
(*iov)[i].iov_base += skip;
break;
} else {
skip -= (*iov)[i].iov_len;
if (i == 0 && old->iov_base) {
(*iov)[i].iov_len = old->iov_len;
(*iov)[i].iov_base = old->iov_base;
old->iov_len = 0;
old->iov_base = NULL;
}
offset++;
}
}
*iov = *iov + offset;
*niov -= offset;
}
/* This thread sends all data using iovecs */
static gpointer test_io_thread_writer(gpointer opaque)
{
QIOChannelTest *data = opaque;
struct iovec *iov = data->inputv;
size_t niov = data->niov;
struct iovec old = { 0 };
qio_channel_set_blocking(data->src, data->blocking, NULL);
while (niov) {
ssize_t ret;
ret = qio_channel_writev(data->src,
iov,
niov,
&data->writeerr);
if (ret == QIO_CHANNEL_ERR_BLOCK) {
if (data->blocking) {
error_setg(&data->writeerr,
"Unexpected I/O blocking");
break;
} else {
qio_channel_wait(data->src,
G_IO_OUT);
continue;
}
} else if (ret < 0) {
break;
} else if (ret == 0) {
error_setg(&data->writeerr,
"Unexpected zero length write");
break;
}
test_skip_iovec(&iov, &niov, ret, &old);
}
qio_channel_writev_all(data->src,
data->inputv,
data->niov,
&data->writeerr);
return NULL;
}
@ -117,38 +58,13 @@ static gpointer test_io_thread_writer(gpointer opaque)
static gpointer test_io_thread_reader(gpointer opaque)
{
QIOChannelTest *data = opaque;
struct iovec *iov = data->outputv;
size_t niov = data->niov;
struct iovec old = { 0 };
qio_channel_set_blocking(data->dst, data->blocking, NULL);
while (niov) {
ssize_t ret;
ret = qio_channel_readv(data->dst,
iov,
niov,
&data->readerr);
if (ret == QIO_CHANNEL_ERR_BLOCK) {
if (data->blocking) {
error_setg(&data->readerr,
"Unexpected I/O blocking");
break;
} else {
qio_channel_wait(data->dst,
G_IO_IN);
continue;
}
} else if (ret < 0) {
break;
} else if (ret == 0) {
break;
}
test_skip_iovec(&iov, &niov, ret, &old);
}
qio_channel_readv_all(data->dst,
data->outputv,
data->niov,
&data->readerr);
return NULL;
}

6
tests/test-io-channel-tls.c
View File

@ -127,8 +127,8 @@ static void test_io_channel_tls(const void *opaque)
/* We'll use this for our fake client-server connection */
g_assert(socketpair(AF_UNIX, SOCK_STREAM, 0, channel) == 0);
#define CLIENT_CERT_DIR "tests/test-crypto-tlssession-client/"
#define SERVER_CERT_DIR "tests/test-crypto-tlssession-server/"
#define CLIENT_CERT_DIR "tests/test-io-channel-tls-client/"
#define SERVER_CERT_DIR "tests/test-io-channel-tls-server/"
mkdir(CLIENT_CERT_DIR, 0700);
mkdir(SERVER_CERT_DIR, 0700);
@ -218,7 +218,7 @@ static void test_io_channel_tls(const void *opaque)
mainloop = g_main_context_default();
do {
g_main_context_iteration(mainloop, TRUE);
} while (!clientHandshake.finished &&
} while (!clientHandshake.finished ||
!serverHandshake.finished);
g_assert(clientHandshake.failed == data->expectClientFail);

205
util/qemu-sockets.c
View File

@ -300,88 +300,19 @@ listen:
((rc) == -EINPROGRESS)
#endif
/* Struct to store connect state for non blocking connect */
typedef struct ConnectState {
int fd;
struct addrinfo *addr_list;
struct addrinfo *current_addr;
NonBlockingConnectHandler *callback;
void *opaque;
} ConnectState;
static int inet_connect_addr(struct addrinfo *addr, Error **errp);
static int inet_connect_addr(struct addrinfo *addr, bool *in_progress,
ConnectState *connect_state, Error **errp);
static void wait_for_connect(void *opaque)
{
ConnectState *s = opaque;
int val = 0, rc = 0;
socklen_t valsize = sizeof(val);
bool in_progress;
Error *err = NULL;
qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
do {
rc = qemu_getsockopt(s->fd, SOL_SOCKET, SO_ERROR, &val, &valsize);
} while (rc == -1 && errno == EINTR);
/* update rc to contain error */
if (!rc && val) {
rc = -1;
errno = val;
}
/* connect error */
if (rc < 0) {
error_setg_errno(&err, errno, "Error connecting to socket");
closesocket(s->fd);
s->fd = rc;
}
/* try to connect to the next address on the list */
if (s->current_addr) {
while (s->current_addr->ai_next != NULL && s->fd < 0) {
s->current_addr = s->current_addr->ai_next;
s->fd = inet_connect_addr(s->current_addr, &in_progress, s, NULL);
if (s->fd < 0) {
error_free(err);
err = NULL;
error_setg_errno(&err, errno, "Unable to start socket connect");
}
/* connect in progress */
if (in_progress) {
goto out;
}
}
freeaddrinfo(s->addr_list);
}
if (s->callback) {
s->callback(s->fd, err, s->opaque);
}
g_free(s);
out:
error_free(err);
}
static int inet_connect_addr(struct addrinfo *addr, bool *in_progress,
ConnectState *connect_state, Error **errp)
static int inet_connect_addr(struct addrinfo *addr, Error **errp)
{
int sock, rc;
*in_progress = false;
sock = qemu_socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol);
if (sock < 0) {
error_setg_errno(errp, errno, "Failed to create socket");
return -1;
}
socket_set_fast_reuse(sock);
if (connect_state != NULL) {
qemu_set_nonblock(sock);
}
/* connect to peer */
do {
rc = 0;
@ -390,15 +321,12 @@ static int inet_connect_addr(struct addrinfo *addr, bool *in_progress,
}
} while (rc == -EINTR);
if (connect_state != NULL && QEMU_SOCKET_RC_INPROGRESS(rc)) {
connect_state->fd = sock;
qemu_set_fd_handler(sock, NULL, wait_for_connect, connect_state);
*in_progress = true;
} else if (rc < 0) {
if (rc < 0) {
error_setg_errno(errp, errno, "Failed to connect socket");
closesocket(sock);
return -1;
}
return sock;
}
@ -456,44 +384,24 @@ static struct addrinfo *inet_parse_connect_saddr(InetSocketAddress *saddr,
*
* @saddr: Inet socket address specification
* @errp: set on error
* @callback: callback function for non-blocking connect
* @opaque: opaque for callback function
*
* Returns: -1 on error, file descriptor on success.
*
* If @callback is non-null, the connect is non-blocking. If this
* function succeeds, callback will be called when the connection
* completes, with the file descriptor on success, or -1 on error.
*/
int inet_connect_saddr(InetSocketAddress *saddr,
NonBlockingConnectHandler *callback, void *opaque,
Error **errp)
int inet_connect_saddr(InetSocketAddress *saddr, Error **errp)
{
Error *local_err = NULL;
struct addrinfo *res, *e;
int sock = -1;
bool in_progress;
ConnectState *connect_state = NULL;
res = inet_parse_connect_saddr(saddr, errp);
if (!res) {
return -1;
}
if (callback != NULL) {
connect_state = g_malloc0(sizeof(*connect_state));
connect_state->addr_list = res;
connect_state->callback = callback;
connect_state->opaque = opaque;
}
for (e = res; e != NULL; e = e->ai_next) {
error_free(local_err);
local_err = NULL;
if (connect_state != NULL) {
connect_state->current_addr = e;
}
sock = inet_connect_addr(e, &in_progress, connect_state, &local_err);
sock = inet_connect_addr(e, &local_err);
if (sock >= 0) {
break;
}
@ -501,15 +409,8 @@ int inet_connect_saddr(InetSocketAddress *saddr,
if (sock < 0) {
error_propagate(errp, local_err);
} else if (in_progress) {
/* wait_for_connect() will do the rest */
return sock;
} else {
if (callback) {
callback(sock, NULL, opaque);
}
}
g_free(connect_state);
freeaddrinfo(res);
return sock;
}
@ -688,7 +589,7 @@ int inet_connect(const char *str, Error **errp)
InetSocketAddress *addr = g_new(InetSocketAddress, 1);
if (!inet_parse(addr, str, errp)) {
sock = inet_connect_saddr(addr, NULL, NULL, errp);
sock = inet_connect_saddr(addr, errp);
}
qapi_free_InetSocketAddress(addr);
return sock;
@ -721,21 +622,16 @@ static bool vsock_parse_vaddr_to_sockaddr(const VsockSocketAddress *vaddr,
return true;
}
static int vsock_connect_addr(const struct sockaddr_vm *svm, bool *in_progress,
ConnectState *connect_state, Error **errp)
static int vsock_connect_addr(const struct sockaddr_vm *svm, Error **errp)
{
int sock, rc;
*in_progress = false;
sock = qemu_socket(AF_VSOCK, SOCK_STREAM, 0);
if (sock < 0) {
error_setg_errno(errp, errno, "Failed to create socket");
return -1;
}
if (connect_state != NULL) {
qemu_set_nonblock(sock);
}
/* connect to peer */
do {
rc = 0;
@ -744,50 +640,26 @@ static int vsock_connect_addr(const struct sockaddr_vm *svm, bool *in_progress,
}
} while (rc == -EINTR);
if (connect_state != NULL && QEMU_SOCKET_RC_INPROGRESS(rc)) {
connect_state->fd = sock;
qemu_set_fd_handler(sock, NULL, wait_for_connect, connect_state);
*in_progress = true;
} else if (rc < 0) {
if (rc < 0) {
error_setg_errno(errp, errno, "Failed to connect socket");
closesocket(sock);
return -1;
}
return sock;
}
static int vsock_connect_saddr(VsockSocketAddress *vaddr,
NonBlockingConnectHandler *callback,
void *opaque,
Error **errp)
static int vsock_connect_saddr(VsockSocketAddress *vaddr, Error **errp)
{
struct sockaddr_vm svm;
int sock = -1;
bool in_progress;
ConnectState *connect_state = NULL;
if (!vsock_parse_vaddr_to_sockaddr(vaddr, &svm, errp)) {
return -1;
}
if (callback != NULL) {
connect_state = g_malloc0(sizeof(*connect_state));
connect_state->callback = callback;
connect_state->opaque = opaque;
}
sock = vsock_connect_addr(&svm, errp);
sock = vsock_connect_addr(&svm, &in_progress, connect_state, errp);
if (sock < 0) {
/* do nothing */
} else if (in_progress) {
/* wait_for_connect() will do the rest */
return sock;
} else {
if (callback) {
callback(sock, NULL, opaque);
}
}
g_free(connect_state);
return sock;
}
@ -847,9 +719,7 @@ static void vsock_unsupported(Error **errp)
error_setg(errp, "socket family AF_VSOCK unsupported");
}
static int vsock_connect_saddr(VsockSocketAddress *vaddr,
NonBlockingConnectHandler *callback,
void *opaque, Error **errp)
static int vsock_connect_saddr(VsockSocketAddress *vaddr, Error **errp)
{
vsock_unsupported(errp);
return -1;
@ -952,12 +822,9 @@ err:
return -1;
}
static int unix_connect_saddr(UnixSocketAddress *saddr,
NonBlockingConnectHandler *callback, void *opaque,
Error **errp)
static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp)
{
struct sockaddr_un un;
ConnectState *connect_state = NULL;
int sock, rc;
if (saddr->path == NULL) {
@ -970,12 +837,6 @@ static int unix_connect_saddr(UnixSocketAddress *saddr,
error_setg_errno(errp, errno, "Failed to create socket");
return -1;
}
if (callback != NULL) {
connect_state = g_malloc0(sizeof(*connect_state));
connect_state->callback = callback;
connect_state->opaque = opaque;
qemu_set_nonblock(sock);
}
if (strlen(saddr->path) > sizeof(un.sun_path)) {
error_setg(errp, "UNIX socket path '%s' is too long", saddr->path);
@ -996,29 +857,16 @@ static int unix_connect_saddr(UnixSocketAddress *saddr,
}
} while (rc == -EINTR);
if (connect_state != NULL && QEMU_SOCKET_RC_INPROGRESS(rc)) {
connect_state->fd = sock;
qemu_set_fd_handler(sock, NULL, wait_for_connect, connect_state);
return sock;
} else if (rc >= 0) {
/* non blocking socket immediate success, call callback */
if (callback != NULL) {
callback(sock, NULL, opaque);
}
}
if (rc < 0) {
error_setg_errno(errp, -rc, "Failed to connect socket %s",
saddr->path);
goto err;
}
g_free(connect_state);
return sock;
err:
close(sock);
g_free(connect_state);
return -1;
}
@ -1033,9 +881,7 @@ static int unix_listen_saddr(UnixSocketAddress *saddr,
return -1;
}
static int unix_connect_saddr(UnixSocketAddress *saddr,
NonBlockingConnectHandler *callback, void *opaque,
Error **errp)
static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp)
{
error_setg(errp, "unix sockets are not available on windows");
errno = ENOTSUP;
@ -1081,7 +927,7 @@ int unix_connect(const char *path, Error **errp)
saddr = g_new0(UnixSocketAddress, 1);
saddr->path = g_strdup(path);
sock = unix_connect_saddr(saddr, NULL, NULL, errp);
sock = unix_connect_saddr(saddr, errp);
qapi_free_UnixSocketAddress(saddr);
return sock;
}
@ -1126,30 +972,25 @@ fail:
return NULL;
}
int socket_connect(SocketAddress *addr, NonBlockingConnectHandler *callback,
void *opaque, Error **errp)
int socket_connect(SocketAddress *addr, Error **errp)
{
int fd;
switch (addr->type) {
case SOCKET_ADDRESS_TYPE_INET:
fd = inet_connect_saddr(&addr->u.inet, callback, opaque, errp);
fd = inet_connect_saddr(&addr->u.inet, errp);
break;
case SOCKET_ADDRESS_TYPE_UNIX:
fd = unix_connect_saddr(&addr->u.q_unix, callback, opaque, errp);
fd = unix_connect_saddr(&addr->u.q_unix, errp);
break;
case SOCKET_ADDRESS_TYPE_FD:
fd = monitor_get_fd(cur_mon, addr->u.fd.str, errp);
if (fd >= 0 && callback) {
qemu_set_nonblock(fd);
callback(fd, NULL, opaque);
}
break;
case SOCKET_ADDRESS_TYPE_VSOCK:
fd = vsock_connect_saddr(&addr->u.vsock, callback, opaque, errp);
fd = vsock_connect_saddr(&addr->u.vsock, errp);
break;
default: