#include "sysemu/char.h"
#include "hw/usb.h"
#include "qmp-commands.h"
+#include "qapi/qmp-input-visitor.h"
+#include "qapi/qmp-output-visitor.h"
+#include "qapi-visit.h"
#include <unistd.h>
#include <fcntl.h>
#define READ_RETRIES 10
#define CHR_MAX_FILENAME_SIZE 256
+/***********************************************************/
+/* Socket address helpers */
+static void qapi_copy_SocketAddress(SocketAddress **p_dest,
+ SocketAddress *src)
+{
+ QmpOutputVisitor *qov;
+ QmpInputVisitor *qiv;
+ Visitor *ov, *iv;
+ QObject *obj;
+
+ *p_dest = NULL;
+
+ qov = qmp_output_visitor_new();
+ ov = qmp_output_get_visitor(qov);
+ visit_type_SocketAddress(ov, &src, NULL, &error_abort);
+ obj = qmp_output_get_qobject(qov);
+ qmp_output_visitor_cleanup(qov);
+ if (!obj) {
+ return;
+ }
+
+ qiv = qmp_input_visitor_new(obj);
+ iv = qmp_input_get_visitor(qiv);
+ visit_type_SocketAddress(iv, p_dest, NULL, &error_abort);
+ qmp_input_visitor_cleanup(qiv);
+ qobject_decref(obj);
+}
+
+static int SocketAddress_to_str(char *dest, int max_len,
+ const char *prefix, SocketAddress *addr,
+ bool is_listen, bool is_telnet)
+{
+ switch (addr->kind) {
+ case SOCKET_ADDRESS_KIND_INET:
+ return snprintf(dest, max_len, "%s%s:%s:%s%s", prefix,
+ is_telnet ? "telnet" : "tcp", addr->inet->host,
+ addr->inet->port, is_listen ? ",server" : "");
+ break;
+ case SOCKET_ADDRESS_KIND_UNIX:
+ return snprintf(dest, max_len, "%sunix:%s%s", prefix,
+ addr->q_unix->path, is_listen ? ",server" : "");
+ break;
+ case SOCKET_ADDRESS_KIND_FD:
+ return snprintf(dest, max_len, "%sfd:%s%s", prefix, addr->fd->str,
+ is_listen ? ",server" : "");
+ break;
+ default:
+ abort();
+ }
+}
+
+static int sockaddr_to_str(char *dest, int max_len,
+ struct sockaddr_storage *ss, socklen_t ss_len,
+ struct sockaddr_storage *ps, socklen_t ps_len,
+ bool is_listen, bool is_telnet)
+{
+ char shost[NI_MAXHOST], sserv[NI_MAXSERV];
+ char phost[NI_MAXHOST], pserv[NI_MAXSERV];
+ const char *left = "", *right = "";
+
+ switch (ss->ss_family) {
+#ifndef _WIN32
+ case AF_UNIX:
+ return snprintf(dest, max_len, "unix:%s%s",
+ ((struct sockaddr_un *)(ss))->sun_path,
+ is_listen ? ",server" : "");
+#endif
+ case AF_INET6:
+ left = "[";
+ right = "]";
+ /* fall through */
+ case AF_INET:
+ getnameinfo((struct sockaddr *) ss, ss_len, shost, sizeof(shost),
+ sserv, sizeof(sserv), NI_NUMERICHOST | NI_NUMERICSERV);
+ getnameinfo((struct sockaddr *) ps, ps_len, phost, sizeof(phost),
+ pserv, sizeof(pserv), NI_NUMERICHOST | NI_NUMERICSERV);
+ return snprintf(dest, max_len, "%s:%s%s%s:%s%s <-> %s%s%s:%s",
+ is_telnet ? "telnet" : "tcp",
+ left, shost, right, sserv,
+ is_listen ? ",server" : "",
+ left, phost, right, pserv);
+
+ default:
+ return snprintf(dest, max_len, "unknown");
+ }
+}
+
/***********************************************************/
/* character device */
int read_msgfds_num;
int *write_msgfds;
int write_msgfds_num;
+
+ SocketAddress *addr;
+ bool is_listen;
+ bool is_telnet;
+
+ guint reconnect_timer;
+ int64_t reconnect_time;
+ bool connect_err_reported;
} TCPCharDriver;
+static gboolean socket_reconnect_timeout(gpointer opaque);
+
+static void qemu_chr_socket_restart_timer(CharDriverState *chr)
+{
+ TCPCharDriver *s = chr->opaque;
+ assert(s->connected == 0);
+ s->reconnect_timer = g_timeout_add_seconds(s->reconnect_time,
+ socket_reconnect_timeout, chr);
+}
+
+static void check_report_connect_error(CharDriverState *chr,
+ Error *err)
+{
+ TCPCharDriver *s = chr->opaque;
+
+ if (!s->connect_err_reported) {
+ error_report("Unable to connect character device %s: %s",
+ chr->label, error_get_pretty(err));
+ s->connect_err_reported = true;
+ }
+ qemu_chr_socket_restart_timer(chr);
+}
+
static gboolean tcp_chr_accept(GIOChannel *chan, GIOCondition cond, void *opaque);
#ifndef _WIN32
s->chan = NULL;
closesocket(s->fd);
s->fd = -1;
+ SocketAddress_to_str(chr->filename, CHR_MAX_FILENAME_SIZE,
+ "disconnected:", s->addr, s->is_listen, s->is_telnet);
qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
+ if (s->reconnect_time) {
+ qemu_chr_socket_restart_timer(chr);
+ }
}
static gboolean tcp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
{
CharDriverState *chr = opaque;
TCPCharDriver *s = chr->opaque;
+ struct sockaddr_storage ss, ps;
+ socklen_t ss_len = sizeof(ss), ps_len = sizeof(ps);
+
+ memset(&ss, 0, ss_len);
+ if (getsockname(s->fd, (struct sockaddr *) &ss, &ss_len) != 0) {
+ snprintf(chr->filename, CHR_MAX_FILENAME_SIZE,
+ "Error in getsockname: %s\n", strerror(errno));
+ } else if (getpeername(s->fd, (struct sockaddr *) &ps, &ps_len) != 0) {
+ snprintf(chr->filename, CHR_MAX_FILENAME_SIZE,
+ "Error in getpeername: %s\n", strerror(errno));
+ } else {
+ sockaddr_to_str(chr->filename, CHR_MAX_FILENAME_SIZE,
+ &ss, ss_len, &ps, ps_len,
+ s->is_listen, s->is_telnet);
+ }
s->connected = 1;
if (s->chan) {
{
TCPCharDriver *s = chr->opaque;
int i;
+
+ if (s->reconnect_timer) {
+ g_source_remove(s->reconnect_timer);
+ s->reconnect_timer = 0;
+ }
+ qapi_free_SocketAddress(s->addr);
if (s->fd >= 0) {
remove_fd_in_watch(chr);
if (s->chan) {
qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
}
-static bool qemu_chr_finish_socket_connection(CharDriverState *chr, int fd,
- bool is_listen, bool is_telnet,
- Error **errp)
+static void qemu_chr_finish_socket_connection(CharDriverState *chr, int fd)
{
TCPCharDriver *s = chr->opaque;
- char host[NI_MAXHOST], serv[NI_MAXSERV];
- const char *left = "", *right = "";
- struct sockaddr_storage ss;
- socklen_t ss_len = sizeof(ss);
-
- memset(&ss, 0, ss_len);
- if (getsockname(fd, (struct sockaddr *) &ss, &ss_len) != 0) {
- closesocket(fd);
- error_setg_errno(errp, errno, "getsockname");
- return false;
- }
-
- switch (ss.ss_family) {
-#ifndef _WIN32
- case AF_UNIX:
- snprintf(chr->filename, CHR_MAX_FILENAME_SIZE, "unix:%s%s",
- ((struct sockaddr_un *)(&ss))->sun_path,
- is_listen ? ",server" : "");
- break;
-#endif
- case AF_INET6:
- left = "[";
- right = "]";
- /* fall through */
- case AF_INET:
- getnameinfo((struct sockaddr *) &ss, ss_len, host, sizeof(host),
- serv, sizeof(serv), NI_NUMERICHOST | NI_NUMERICSERV);
- snprintf(chr->filename, CHR_MAX_FILENAME_SIZE, "%s:%s%s%s:%s%s",
- is_telnet ? "telnet" : "tcp",
- left, host, right, serv,
- is_listen ? ",server" : "");
- break;
- }
- if (is_listen) {
+ if (s->is_listen) {
s->listen_fd = fd;
s->listen_chan = io_channel_from_socket(s->listen_fd);
s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN,
s->chan = io_channel_from_socket(s->fd);
tcp_chr_connect(chr);
}
+}
- return true;
+static void qemu_chr_socket_connected(int fd, Error *err, void *opaque)
+{
+ CharDriverState *chr = opaque;
+ TCPCharDriver *s = chr->opaque;
+
+ if (fd < 0) {
+ check_report_connect_error(chr, err);
+ return;
+ }
+
+ s->connect_err_reported = false;
+ qemu_chr_finish_socket_connection(chr, fd);
}
-static bool qemu_chr_open_socket_fd(CharDriverState *chr, SocketAddress *addr,
- bool is_listen, bool is_telnet,
- Error **errp)
+static bool qemu_chr_open_socket_fd(CharDriverState *chr, Error **errp)
{
+ TCPCharDriver *s = chr->opaque;
int fd;
- if (is_listen) {
- fd = socket_listen(addr, errp);
- } else {
- fd = socket_connect(addr, errp, NULL, NULL);
+ if (s->is_listen) {
+ fd = socket_listen(s->addr, errp);
+ } else if (s->reconnect_time) {
+ fd = socket_connect(s->addr, errp, qemu_chr_socket_connected, chr);
+ return fd >= 0;
+ } else {
+ fd = socket_connect(s->addr, errp, NULL, NULL);
}
if (fd < 0) {
return false;
}
- return qemu_chr_finish_socket_connection(chr, fd, is_listen, is_telnet,
- errp);
+ qemu_chr_finish_socket_connection(chr, fd);
+ return true;
}
/*********************************************************/
bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true);
bool is_telnet = qemu_opt_get_bool(opts, "telnet", false);
bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true);
+ int64_t reconnect = qemu_opt_get_number(opts, "reconnect", 0);
const char *path = qemu_opt_get(opts, "path");
const char *host = qemu_opt_get(opts, "host");
const char *port = qemu_opt_get(opts, "port");
backend->socket->telnet = is_telnet;
backend->socket->has_wait = true;
backend->socket->wait = is_waitconnect;
+ backend->socket->has_reconnect = true;
+ backend->socket->reconnect = reconnect;
addr = g_new0(SocketAddress, 1);
if (path) {
},{
.name = "delay",
.type = QEMU_OPT_BOOL,
+ },{
+ .name = "reconnect",
+ .type = QEMU_OPT_NUMBER,
},{
.name = "telnet",
.type = QEMU_OPT_BOOL,
#endif /* WIN32 */
+static void socket_try_connect(CharDriverState *chr)
+{
+ Error *err = NULL;
+
+ if (!qemu_chr_open_socket_fd(chr, &err)) {
+ check_report_connect_error(chr, err);
+ }
+}
+
+static gboolean socket_reconnect_timeout(gpointer opaque)
+{
+ CharDriverState *chr = opaque;
+ TCPCharDriver *s = chr->opaque;
+
+ s->reconnect_timer = 0;
+
+ if (chr->be_open) {
+ return false;
+ }
+
+ socket_try_connect(chr);
+
+ return false;
+}
+
static CharDriverState *qmp_chardev_open_socket(ChardevSocket *sock,
Error **errp)
{
bool is_listen = sock->has_server ? sock->server : true;
bool is_telnet = sock->has_telnet ? sock->telnet : false;
bool is_waitconnect = sock->has_wait ? sock->wait : false;
+ int64_t reconnect = sock->has_reconnect ? sock->reconnect : 0;
chr = qemu_chr_alloc();
s = g_malloc0(sizeof(TCPCharDriver));
s->fd = -1;
s->listen_fd = -1;
s->is_unix = addr->kind == SOCKET_ADDRESS_KIND_UNIX;
+ s->is_listen = is_listen;
+ s->is_telnet = is_telnet;
s->do_nodelay = do_nodelay;
+ qapi_copy_SocketAddress(&s->addr, sock->addr);
chr->opaque = s;
chr->chr_write = tcp_chr_write;
chr->explicit_be_open = true;
chr->filename = g_malloc(CHR_MAX_FILENAME_SIZE);
+ SocketAddress_to_str(chr->filename, CHR_MAX_FILENAME_SIZE, "disconnected:",
+ addr, is_listen, is_telnet);
if (is_listen) {
if (is_telnet) {
s->do_telnetopt = 1;
}
+ } else if (reconnect > 0) {
+ s->reconnect_time = reconnect;
}
- if (!qemu_chr_open_socket_fd(chr, addr, is_listen, is_telnet, errp)) {
+ if (s->reconnect_time) {
+ socket_try_connect(chr);
+ } else if (!qemu_chr_open_socket_fd(chr, errp)) {
g_free(s);
g_free(chr->filename);
g_free(chr);
projects / qemu.git / blobdiff