8 #include "qemu/osdep.h"
9 #include "qemu/sockets.h"
10 #include "qga/channel.h"
16 #define GA_CHANNEL_BAUDRATE_DEFAULT B38400 /* for isa-serial channels */
19 GIOChannel *listen_channel;
20 GIOChannel *client_channel;
21 GAChannelMethod method;
22 GAChannelCallback event_cb;
26 static int ga_channel_client_add(GAChannel *c, int fd);
28 static gboolean ga_channel_listen_accept(GIOChannel *channel,
29 GIOCondition condition, gpointer data)
33 bool accepted = false;
34 struct sockaddr_un addr;
35 socklen_t addrlen = sizeof(addr);
37 g_assert(channel != NULL);
39 client_fd = qemu_accept(g_io_channel_unix_get_fd(channel),
40 (struct sockaddr *)&addr, &addrlen);
41 if (client_fd == -1) {
42 g_warning("error converting fd to gsocket: %s", strerror(errno));
45 fcntl(client_fd, F_SETFL, O_NONBLOCK);
46 ret = ga_channel_client_add(c, client_fd);
48 g_warning("error setting up connection");
54 /* only accept 1 connection at a time */
58 /* start polling for readable events on listen fd, new==true
59 * indicates we should use the existing s->listen_channel
61 static void ga_channel_listen_add(GAChannel *c, int listen_fd, bool create)
64 c->listen_channel = g_io_channel_unix_new(listen_fd);
66 g_io_add_watch(c->listen_channel, G_IO_IN, ga_channel_listen_accept, c);
69 static void ga_channel_listen_close(GAChannel *c)
71 g_assert(c->method == GA_CHANNEL_UNIX_LISTEN);
72 g_assert(c->listen_channel);
73 g_io_channel_shutdown(c->listen_channel, true, NULL);
74 g_io_channel_unref(c->listen_channel);
75 c->listen_channel = NULL;
78 /* cleanup state for closed connection/session, start accepting new
79 * connections if we're in listening mode
81 static void ga_channel_client_close(GAChannel *c)
83 g_assert(c->client_channel);
84 g_io_channel_shutdown(c->client_channel, true, NULL);
85 g_io_channel_unref(c->client_channel);
86 c->client_channel = NULL;
87 if (c->method == GA_CHANNEL_UNIX_LISTEN && c->listen_channel) {
88 ga_channel_listen_add(c, 0, false);
92 static gboolean ga_channel_client_event(GIOChannel *channel,
93 GIOCondition condition, gpointer data)
100 client_cont = c->event_cb(condition, c->user_data);
102 ga_channel_client_close(c);
109 static int ga_channel_client_add(GAChannel *c, int fd)
111 GIOChannel *client_channel;
114 g_assert(c && !c->client_channel);
115 client_channel = g_io_channel_unix_new(fd);
116 g_assert(client_channel);
117 g_io_channel_set_encoding(client_channel, NULL, &err);
119 g_warning("error setting channel encoding to binary");
123 g_io_add_watch(client_channel, G_IO_IN | G_IO_HUP,
124 ga_channel_client_event, c);
125 c->client_channel = client_channel;
129 static gboolean ga_channel_open(GAChannel *c, const gchar *path, GAChannelMethod method)
135 case GA_CHANNEL_VIRTIO_SERIAL: {
136 int fd = qemu_open(path, O_RDWR | O_NONBLOCK
137 #ifndef CONFIG_SOLARIS
142 g_critical("error opening channel: %s", strerror(errno));
145 #ifdef CONFIG_SOLARIS
146 ret = ioctl(fd, I_SETSIG, S_OUTPUT | S_INPUT | S_HIPRI);
148 g_critical("error setting event mask for channel: %s",
153 ret = ga_channel_client_add(c, fd);
155 g_critical("error adding channel to main loop");
160 case GA_CHANNEL_ISA_SERIAL: {
162 int fd = qemu_open(path, O_RDWR | O_NOCTTY | O_NONBLOCK);
164 g_critical("error opening channel: %s", strerror(errno));
168 /* set up serial port for non-canonical, dumb byte streaming */
169 tio.c_iflag &= ~(IGNBRK | BRKINT | IGNPAR | PARMRK | INPCK | ISTRIP |
170 INLCR | IGNCR | ICRNL | IXON | IXOFF | IXANY |
174 tio.c_cflag |= GA_CHANNEL_BAUDRATE_DEFAULT;
175 /* 1 available byte min or reads will block (we'll set non-blocking
176 * elsewhere, else we have to deal with read()=0 instead)
180 /* flush everything waiting for read/xmit, it's garbage at this point */
181 tcflush(fd, TCIFLUSH);
182 tcsetattr(fd, TCSANOW, &tio);
183 ret = ga_channel_client_add(c, fd);
185 g_error("error adding channel to main loop");
189 case GA_CHANNEL_UNIX_LISTEN: {
190 Error *local_err = NULL;
191 int fd = unix_listen(path, NULL, strlen(path), &local_err);
192 if (local_err != NULL) {
193 g_critical("%s", error_get_pretty(local_err));
194 error_free(local_err);
197 ga_channel_listen_add(c, fd, true);
201 g_critical("error binding/listening to specified socket");
208 GIOStatus ga_channel_write_all(GAChannel *c, const gchar *buf, gsize size)
212 GIOStatus status = G_IO_STATUS_NORMAL;
215 status = g_io_channel_write_chars(c->client_channel, buf, size,
217 g_debug("sending data, count: %d", (int)size);
219 g_warning("error writing to channel: %s", err->message);
220 return G_IO_STATUS_ERROR;
222 if (status != G_IO_STATUS_NORMAL) {
228 if (status == G_IO_STATUS_NORMAL) {
229 status = g_io_channel_flush(c->client_channel, &err);
231 g_warning("error flushing channel: %s", err->message);
232 return G_IO_STATUS_ERROR;
239 GIOStatus ga_channel_read(GAChannel *c, gchar *buf, gsize size, gsize *count)
241 return g_io_channel_read_chars(c->client_channel, buf, size, count, NULL);
244 GAChannel *ga_channel_new(GAChannelMethod method, const gchar *path,
245 GAChannelCallback cb, gpointer opaque)
247 GAChannel *c = g_malloc0(sizeof(GAChannel));
249 c->user_data = opaque;
251 if (!ga_channel_open(c, path, method)) {
252 g_critical("error opening channel");
260 void ga_channel_free(GAChannel *c)
262 if (c->method == GA_CHANNEL_UNIX_LISTEN
263 && c->listen_channel) {
264 ga_channel_listen_close(c);
266 if (c->client_channel) {
267 ga_channel_client_close(c);