]>
Commit | Line | Data |
---|---|---|
cbcc6336 AL |
1 | #include "config-host.h" |
2 | #include "trace.h" | |
3 | #include "ui/qemu-spice.h" | |
dccfcd0e | 4 | #include "sysemu/char.h" |
cbcc6336 AL |
5 | #include <spice.h> |
6 | #include <spice-experimental.h> | |
5a49d3e9 | 7 | #include <spice/protocol.h> |
cbcc6336 | 8 | |
1de7afc9 | 9 | #include "qemu/osdep.h" |
cbcc6336 | 10 | |
cbcc6336 AL |
11 | typedef struct SpiceCharDriver { |
12 | CharDriverState* chr; | |
13 | SpiceCharDeviceInstance sin; | |
14 | char *subtype; | |
15 | bool active; | |
ae893e5e | 16 | bool blocked; |
cbcc6336 AL |
17 | uint8_t *buffer; |
18 | uint8_t *datapos; | |
19 | ssize_t bufsize, datalen; | |
7a5448ce | 20 | QLIST_ENTRY(SpiceCharDriver) next; |
cbcc6336 AL |
21 | } SpiceCharDriver; |
22 | ||
ae893e5e HG |
23 | typedef struct SpiceCharSource { |
24 | GSource source; | |
25 | SpiceCharDriver *scd; | |
26 | } SpiceCharSource; | |
27 | ||
7a5448ce MAL |
28 | static QLIST_HEAD(, SpiceCharDriver) spice_chars = |
29 | QLIST_HEAD_INITIALIZER(spice_chars); | |
30 | ||
cbcc6336 AL |
31 | static int vmc_write(SpiceCharDeviceInstance *sin, const uint8_t *buf, int len) |
32 | { | |
33 | SpiceCharDriver *scd = container_of(sin, SpiceCharDriver, sin); | |
34 | ssize_t out = 0; | |
35 | ssize_t last_out; | |
36 | uint8_t* p = (uint8_t*)buf; | |
37 | ||
38 | while (len > 0) { | |
07a54d70 MAL |
39 | last_out = MIN(len, qemu_chr_be_can_write(scd->chr)); |
40 | if (last_out <= 0) { | |
cbcc6336 AL |
41 | break; |
42 | } | |
fa5efccb | 43 | qemu_chr_be_write(scd->chr, p, last_out); |
35106c2d HG |
44 | out += last_out; |
45 | len -= last_out; | |
46 | p += last_out; | |
cbcc6336 AL |
47 | } |
48 | ||
cbcc6336 AL |
49 | trace_spice_vmc_write(out, len + out); |
50 | return out; | |
51 | } | |
52 | ||
53 | static int vmc_read(SpiceCharDeviceInstance *sin, uint8_t *buf, int len) | |
54 | { | |
55 | SpiceCharDriver *scd = container_of(sin, SpiceCharDriver, sin); | |
56 | int bytes = MIN(len, scd->datalen); | |
57 | ||
cbcc6336 AL |
58 | if (bytes > 0) { |
59 | memcpy(buf, scd->datapos, bytes); | |
60 | scd->datapos += bytes; | |
61 | scd->datalen -= bytes; | |
62 | assert(scd->datalen >= 0); | |
ae893e5e HG |
63 | } |
64 | if (scd->datalen == 0) { | |
65 | scd->datapos = 0; | |
66 | scd->blocked = false; | |
cbcc6336 AL |
67 | } |
68 | trace_spice_vmc_read(bytes, len); | |
69 | return bytes; | |
70 | } | |
71 | ||
5a49d3e9 MAL |
72 | #if SPICE_SERVER_VERSION >= 0x000c02 |
73 | static void vmc_event(SpiceCharDeviceInstance *sin, uint8_t event) | |
74 | { | |
75 | SpiceCharDriver *scd = container_of(sin, SpiceCharDriver, sin); | |
76 | int chr_event; | |
77 | ||
78 | switch (event) { | |
79 | case SPICE_PORT_EVENT_BREAK: | |
80 | chr_event = CHR_EVENT_BREAK; | |
81 | break; | |
82 | default: | |
5a49d3e9 MAL |
83 | return; |
84 | } | |
85 | ||
5a49d3e9 MAL |
86 | trace_spice_vmc_event(chr_event); |
87 | qemu_chr_be_event(scd->chr, chr_event); | |
88 | } | |
89 | #endif | |
90 | ||
f76e4c7f HG |
91 | static void vmc_state(SpiceCharDeviceInstance *sin, int connected) |
92 | { | |
93 | SpiceCharDriver *scd = container_of(sin, SpiceCharDriver, sin); | |
94 | ||
16665b94 HG |
95 | if ((scd->chr->be_open && connected) || |
96 | (!scd->chr->be_open && !connected)) { | |
f76e4c7f HG |
97 | return; |
98 | } | |
99 | ||
100 | qemu_chr_be_event(scd->chr, | |
101 | connected ? CHR_EVENT_OPENED : CHR_EVENT_CLOSED); | |
102 | } | |
103 | ||
cbcc6336 AL |
104 | static SpiceCharDeviceInterface vmc_interface = { |
105 | .base.type = SPICE_INTERFACE_CHAR_DEVICE, | |
106 | .base.description = "spice virtual channel char device", | |
107 | .base.major_version = SPICE_INTERFACE_CHAR_DEVICE_MAJOR, | |
108 | .base.minor_version = SPICE_INTERFACE_CHAR_DEVICE_MINOR, | |
f76e4c7f | 109 | .state = vmc_state, |
cbcc6336 AL |
110 | .write = vmc_write, |
111 | .read = vmc_read, | |
5a49d3e9 MAL |
112 | #if SPICE_SERVER_VERSION >= 0x000c02 |
113 | .event = vmc_event, | |
114 | #endif | |
cbcc6336 AL |
115 | }; |
116 | ||
117 | ||
118 | static void vmc_register_interface(SpiceCharDriver *scd) | |
119 | { | |
120 | if (scd->active) { | |
121 | return; | |
122 | } | |
cbcc6336 AL |
123 | scd->sin.base.sif = &vmc_interface.base; |
124 | qemu_spice_add_interface(&scd->sin.base); | |
125 | scd->active = true; | |
126 | trace_spice_vmc_register_interface(scd); | |
127 | } | |
128 | ||
129 | static void vmc_unregister_interface(SpiceCharDriver *scd) | |
130 | { | |
131 | if (!scd->active) { | |
132 | return; | |
133 | } | |
cbcc6336 AL |
134 | spice_server_remove_interface(&scd->sin.base); |
135 | scd->active = false; | |
136 | trace_spice_vmc_unregister_interface(scd); | |
137 | } | |
138 | ||
ae893e5e HG |
139 | static gboolean spice_char_source_prepare(GSource *source, gint *timeout) |
140 | { | |
141 | SpiceCharSource *src = (SpiceCharSource *)source; | |
142 | ||
143 | *timeout = -1; | |
144 | ||
145 | return !src->scd->blocked; | |
146 | } | |
147 | ||
148 | static gboolean spice_char_source_check(GSource *source) | |
149 | { | |
150 | SpiceCharSource *src = (SpiceCharSource *)source; | |
151 | ||
152 | return !src->scd->blocked; | |
153 | } | |
154 | ||
155 | static gboolean spice_char_source_dispatch(GSource *source, | |
156 | GSourceFunc callback, gpointer user_data) | |
157 | { | |
158 | GIOFunc func = (GIOFunc)callback; | |
159 | ||
160 | return func(NULL, G_IO_OUT, user_data); | |
161 | } | |
162 | ||
163 | GSourceFuncs SpiceCharSourceFuncs = { | |
164 | .prepare = spice_char_source_prepare, | |
165 | .check = spice_char_source_check, | |
166 | .dispatch = spice_char_source_dispatch, | |
167 | }; | |
168 | ||
169 | static GSource *spice_chr_add_watch(CharDriverState *chr, GIOCondition cond) | |
170 | { | |
171 | SpiceCharDriver *scd = chr->opaque; | |
172 | SpiceCharSource *src; | |
173 | ||
174 | assert(cond == G_IO_OUT); | |
175 | ||
176 | src = (SpiceCharSource *)g_source_new(&SpiceCharSourceFuncs, | |
177 | sizeof(SpiceCharSource)); | |
178 | src->scd = scd; | |
179 | ||
180 | return (GSource *)src; | |
181 | } | |
cbcc6336 AL |
182 | |
183 | static int spice_chr_write(CharDriverState *chr, const uint8_t *buf, int len) | |
184 | { | |
185 | SpiceCharDriver *s = chr->opaque; | |
ae893e5e | 186 | int read_bytes; |
cbcc6336 | 187 | |
cbcc6336 AL |
188 | assert(s->datalen == 0); |
189 | if (s->bufsize < len) { | |
190 | s->bufsize = len; | |
7267c094 | 191 | s->buffer = g_realloc(s->buffer, s->bufsize); |
cbcc6336 AL |
192 | } |
193 | memcpy(s->buffer, buf, len); | |
194 | s->datapos = s->buffer; | |
195 | s->datalen = len; | |
196 | spice_server_char_device_wakeup(&s->sin); | |
ae893e5e HG |
197 | read_bytes = len - s->datalen; |
198 | if (read_bytes != len) { | |
199 | /* We'll get passed in the unconsumed data with the next call */ | |
200 | s->datalen = 0; | |
201 | s->datapos = NULL; | |
202 | s->blocked = true; | |
203 | } | |
204 | return read_bytes; | |
cbcc6336 AL |
205 | } |
206 | ||
207 | static void spice_chr_close(struct CharDriverState *chr) | |
208 | { | |
209 | SpiceCharDriver *s = chr->opaque; | |
210 | ||
cbcc6336 | 211 | vmc_unregister_interface(s); |
7a5448ce | 212 | QLIST_REMOVE(s, next); |
5e9b473a HG |
213 | |
214 | g_free((char *)s->sin.subtype); | |
215 | #if SPICE_SERVER_VERSION >= 0x000c02 | |
216 | g_free((char *)s->sin.portname); | |
217 | #endif | |
7267c094 | 218 | g_free(s); |
cbcc6336 AL |
219 | } |
220 | ||
574b711a | 221 | static void spice_chr_set_fe_open(struct CharDriverState *chr, int fe_open) |
cd8f7df2 HG |
222 | { |
223 | SpiceCharDriver *s = chr->opaque; | |
574b711a HG |
224 | if (fe_open) { |
225 | vmc_register_interface(s); | |
226 | } else { | |
227 | vmc_unregister_interface(s); | |
228 | } | |
cd8f7df2 HG |
229 | } |
230 | ||
cbcc6336 AL |
231 | static void print_allowed_subtypes(void) |
232 | { | |
233 | const char** psubtype; | |
234 | int i; | |
235 | ||
236 | fprintf(stderr, "allowed names: "); | |
237 | for(i=0, psubtype = spice_server_char_device_recognized_subtypes(); | |
238 | *psubtype != NULL; ++psubtype, ++i) { | |
239 | if (i == 0) { | |
240 | fprintf(stderr, "%s", *psubtype); | |
241 | } else { | |
242 | fprintf(stderr, ", %s", *psubtype); | |
243 | } | |
244 | } | |
245 | fprintf(stderr, "\n"); | |
246 | } | |
247 | ||
cd153e2a | 248 | static CharDriverState *chr_open(const char *subtype) |
cbcc6336 AL |
249 | { |
250 | CharDriverState *chr; | |
251 | SpiceCharDriver *s; | |
71b423f4 MAL |
252 | |
253 | chr = g_malloc0(sizeof(CharDriverState)); | |
254 | s = g_malloc0(sizeof(SpiceCharDriver)); | |
255 | s->chr = chr; | |
71b423f4 | 256 | s->active = false; |
5e9b473a | 257 | s->sin.subtype = g_strdup(subtype); |
71b423f4 MAL |
258 | chr->opaque = s; |
259 | chr->chr_write = spice_chr_write; | |
ae893e5e | 260 | chr->chr_add_watch = spice_chr_add_watch; |
71b423f4 | 261 | chr->chr_close = spice_chr_close; |
574b711a | 262 | chr->chr_set_fe_open = spice_chr_set_fe_open; |
71b423f4 | 263 | |
7a5448ce MAL |
264 | QLIST_INSERT_HEAD(&spice_chars, s, next); |
265 | ||
71b423f4 MAL |
266 | return chr; |
267 | } | |
268 | ||
cd153e2a | 269 | CharDriverState *qemu_chr_open_spice_vmc(const char *type) |
71b423f4 | 270 | { |
71b423f4 | 271 | const char **psubtype = spice_server_char_device_recognized_subtypes(); |
cbcc6336 | 272 | |
cd153e2a | 273 | if (type == NULL) { |
cbcc6336 AL |
274 | fprintf(stderr, "spice-qemu-char: missing name parameter\n"); |
275 | print_allowed_subtypes(); | |
1f51470d | 276 | return NULL; |
cbcc6336 | 277 | } |
cd153e2a GH |
278 | for (; *psubtype != NULL; ++psubtype) { |
279 | if (strcmp(type, *psubtype) == 0) { | |
cbcc6336 AL |
280 | break; |
281 | } | |
282 | } | |
cd153e2a GH |
283 | if (*psubtype == NULL) { |
284 | fprintf(stderr, "spice-qemu-char: unsupported type: %s\n", type); | |
cbcc6336 | 285 | print_allowed_subtypes(); |
1f51470d | 286 | return NULL; |
cbcc6336 AL |
287 | } |
288 | ||
52fe0e75 | 289 | return chr_open(type); |
cbcc6336 | 290 | } |
5a49d3e9 MAL |
291 | |
292 | #if SPICE_SERVER_VERSION >= 0x000c02 | |
cd153e2a | 293 | CharDriverState *qemu_chr_open_spice_port(const char *name) |
5a49d3e9 MAL |
294 | { |
295 | CharDriverState *chr; | |
296 | SpiceCharDriver *s; | |
5a49d3e9 MAL |
297 | |
298 | if (name == NULL) { | |
299 | fprintf(stderr, "spice-qemu-char: missing name parameter\n"); | |
300 | return NULL; | |
301 | } | |
302 | ||
cd153e2a | 303 | chr = chr_open("port"); |
5a49d3e9 | 304 | s = chr->opaque; |
5e9b473a | 305 | s->sin.portname = g_strdup(name); |
5a49d3e9 MAL |
306 | |
307 | return chr; | |
308 | } | |
afd0b409 MAL |
309 | |
310 | void qemu_spice_register_ports(void) | |
311 | { | |
312 | SpiceCharDriver *s; | |
313 | ||
314 | QLIST_FOREACH(s, &spice_chars, next) { | |
315 | if (s->sin.portname == NULL) { | |
316 | continue; | |
317 | } | |
318 | vmc_register_interface(s); | |
319 | } | |
320 | } | |
5a49d3e9 | 321 | #endif |
26c60614 | 322 | |
cd153e2a GH |
323 | static void qemu_chr_parse_spice_vmc(QemuOpts *opts, ChardevBackend *backend, |
324 | Error **errp) | |
325 | { | |
326 | const char *name = qemu_opt_get(opts, "name"); | |
327 | ||
328 | if (name == NULL) { | |
329 | error_setg(errp, "chardev: spice channel: no name given"); | |
330 | return; | |
331 | } | |
332 | backend->spicevmc = g_new0(ChardevSpiceChannel, 1); | |
333 | backend->spicevmc->type = g_strdup(name); | |
334 | } | |
335 | ||
336 | static void qemu_chr_parse_spice_port(QemuOpts *opts, ChardevBackend *backend, | |
337 | Error **errp) | |
338 | { | |
339 | const char *name = qemu_opt_get(opts, "name"); | |
340 | ||
341 | if (name == NULL) { | |
342 | error_setg(errp, "chardev: spice port: no name given"); | |
343 | return; | |
344 | } | |
345 | backend->spiceport = g_new0(ChardevSpicePort, 1); | |
346 | backend->spiceport->fqdn = g_strdup(name); | |
347 | } | |
348 | ||
26c60614 AL |
349 | static void register_types(void) |
350 | { | |
cd153e2a GH |
351 | register_char_driver_qapi("spicevmc", CHARDEV_BACKEND_KIND_SPICEVMC, |
352 | qemu_chr_parse_spice_vmc); | |
353 | register_char_driver_qapi("spiceport", CHARDEV_BACKEND_KIND_SPICEPORT, | |
354 | qemu_chr_parse_spice_port); | |
26c60614 AL |
355 | } |
356 | ||
357 | type_init(register_types); |