7 #include "qemu/osdep.h"
8 #include "qemu/sockets.h"
9 #include "qga/channel.h"
15 #define GA_CHANNEL_BAUDRATE_DEFAULT B38400 /* for isa-serial channels */
18 GIOChannel *listen_channel;
19 GIOChannel *client_channel;
20 GAChannelMethod method;
21 GAChannelCallback event_cb;
25 static int ga_channel_client_add(GAChannel *c, int fd);
27 static gboolean ga_channel_listen_accept(GIOChannel *channel,
28 GIOCondition condition, gpointer data)
32 bool accepted = false;
33 struct sockaddr_un addr;
34 socklen_t addrlen = sizeof(addr);
36 g_assert(channel != NULL);
38 client_fd = qemu_accept(g_io_channel_unix_get_fd(channel),
39 (struct sockaddr *)&addr, &addrlen);
40 if (client_fd == -1) {
41 g_warning("error converting fd to gsocket: %s", strerror(errno));
44 fcntl(client_fd, F_SETFL, O_NONBLOCK);
45 ret = ga_channel_client_add(c, client_fd);
47 g_warning("error setting up connection");
53 /* only accept 1 connection at a time */
57 /* start polling for readable events on listen fd, new==true
58 * indicates we should use the existing s->listen_channel
60 static void ga_channel_listen_add(GAChannel *c, int listen_fd, bool create)
63 c->listen_channel = g_io_channel_unix_new(listen_fd);
65 g_io_add_watch(c->listen_channel, G_IO_IN, ga_channel_listen_accept, c);
68 static void ga_channel_listen_close(GAChannel *c)
70 g_assert(c->method == GA_CHANNEL_UNIX_LISTEN);
71 g_assert(c->listen_channel);
72 g_io_channel_shutdown(c->listen_channel, true, NULL);
73 g_io_channel_unref(c->listen_channel);
74 c->listen_channel = NULL;
77 /* cleanup state for closed connection/session, start accepting new
78 * connections if we're in listening mode
80 static void ga_channel_client_close(GAChannel *c)
82 g_assert(c->client_channel);
83 g_io_channel_shutdown(c->client_channel, true, NULL);
84 g_io_channel_unref(c->client_channel);
85 c->client_channel = NULL;
86 if (c->method == GA_CHANNEL_UNIX_LISTEN && c->listen_channel) {
87 ga_channel_listen_add(c, 0, false);
91 static gboolean ga_channel_client_event(GIOChannel *channel,
92 GIOCondition condition, gpointer data)
99 client_cont = c->event_cb(condition, c->user_data);
101 ga_channel_client_close(c);
108 static int ga_channel_client_add(GAChannel *c, int fd)
110 GIOChannel *client_channel;
113 g_assert(c && !c->client_channel);
114 client_channel = g_io_channel_unix_new(fd);
115 g_assert(client_channel);
116 g_io_channel_set_encoding(client_channel, NULL, &err);
118 g_warning("error setting channel encoding to binary");
122 g_io_add_watch(client_channel, G_IO_IN | G_IO_HUP,
123 ga_channel_client_event, c);
124 c->client_channel = client_channel;
128 static gboolean ga_channel_open(GAChannel *c, const gchar *path, GAChannelMethod method)
134 case GA_CHANNEL_VIRTIO_SERIAL: {
135 int fd = qemu_open(path, O_RDWR | O_NONBLOCK
136 #ifndef CONFIG_SOLARIS
141 g_critical("error opening channel: %s", strerror(errno));
144 #ifdef CONFIG_SOLARIS
145 ret = ioctl(fd, I_SETSIG, S_OUTPUT | S_INPUT | S_HIPRI);
147 g_critical("error setting event mask for channel: %s",
152 ret = ga_channel_client_add(c, fd);
154 g_critical("error adding channel to main loop");
159 case GA_CHANNEL_ISA_SERIAL: {
161 int fd = qemu_open(path, O_RDWR | O_NOCTTY | O_NONBLOCK);
163 g_critical("error opening channel: %s", strerror(errno));
167 /* set up serial port for non-canonical, dumb byte streaming */
168 tio.c_iflag &= ~(IGNBRK | BRKINT | IGNPAR | PARMRK | INPCK | ISTRIP |
169 INLCR | IGNCR | ICRNL | IXON | IXOFF | IXANY |
173 tio.c_cflag |= GA_CHANNEL_BAUDRATE_DEFAULT;
174 /* 1 available byte min or reads will block (we'll set non-blocking
175 * elsewhere, else we have to deal with read()=0 instead)
179 /* flush everything waiting for read/xmit, it's garbage at this point */
180 tcflush(fd, TCIFLUSH);
181 tcsetattr(fd, TCSANOW, &tio);
182 ret = ga_channel_client_add(c, fd);
184 g_error("error adding channel to main loop");
188 case GA_CHANNEL_UNIX_LISTEN: {
189 Error *local_err = NULL;
190 int fd = unix_listen(path, NULL, strlen(path), &local_err);
191 if (local_err != NULL) {
192 g_critical("%s", error_get_pretty(local_err));
193 error_free(local_err);
196 ga_channel_listen_add(c, fd, true);
200 g_critical("error binding/listening to specified socket");
207 GIOStatus ga_channel_write_all(GAChannel *c, const gchar *buf, gsize size)
211 GIOStatus status = G_IO_STATUS_NORMAL;
214 status = g_io_channel_write_chars(c->client_channel, buf, size,
216 g_debug("sending data, count: %d", (int)size);
218 g_warning("error writing to channel: %s", err->message);
219 return G_IO_STATUS_ERROR;
221 if (status != G_IO_STATUS_NORMAL) {
227 if (status == G_IO_STATUS_NORMAL) {
228 status = g_io_channel_flush(c->client_channel, &err);
230 g_warning("error flushing channel: %s", err->message);
231 return G_IO_STATUS_ERROR;
238 GIOStatus ga_channel_read(GAChannel *c, gchar *buf, gsize size, gsize *count)
240 return g_io_channel_read_chars(c->client_channel, buf, size, count, NULL);
243 GAChannel *ga_channel_new(GAChannelMethod method, const gchar *path,
244 GAChannelCallback cb, gpointer opaque)
246 GAChannel *c = g_malloc0(sizeof(GAChannel));
248 c->user_data = opaque;
250 if (!ga_channel_open(c, path, method)) {
251 g_critical("error opening channel");
259 void ga_channel_free(GAChannel *c)
261 if (c->method == GA_CHANNEL_UNIX_LISTEN
262 && c->listen_channel) {
263 ga_channel_listen_close(c);
265 if (c->client_channel) {
266 ga_channel_client_close(c);