]>
Commit | Line | Data |
---|---|---|
cbcc6336 AL |
1 | #include "config-host.h" |
2 | #include "trace.h" | |
3 | #include "ui/qemu-spice.h" | |
927d4878 | 4 | #include "char/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; | |
16 | uint8_t *buffer; | |
17 | uint8_t *datapos; | |
18 | ssize_t bufsize, datalen; | |
7a5448ce | 19 | QLIST_ENTRY(SpiceCharDriver) next; |
cbcc6336 AL |
20 | } SpiceCharDriver; |
21 | ||
7a5448ce MAL |
22 | static QLIST_HEAD(, SpiceCharDriver) spice_chars = |
23 | QLIST_HEAD_INITIALIZER(spice_chars); | |
24 | ||
cbcc6336 AL |
25 | static int vmc_write(SpiceCharDeviceInstance *sin, const uint8_t *buf, int len) |
26 | { | |
27 | SpiceCharDriver *scd = container_of(sin, SpiceCharDriver, sin); | |
28 | ssize_t out = 0; | |
29 | ssize_t last_out; | |
30 | uint8_t* p = (uint8_t*)buf; | |
31 | ||
32 | while (len > 0) { | |
07a54d70 MAL |
33 | last_out = MIN(len, qemu_chr_be_can_write(scd->chr)); |
34 | if (last_out <= 0) { | |
cbcc6336 AL |
35 | break; |
36 | } | |
fa5efccb | 37 | qemu_chr_be_write(scd->chr, p, last_out); |
35106c2d HG |
38 | out += last_out; |
39 | len -= last_out; | |
40 | p += last_out; | |
cbcc6336 AL |
41 | } |
42 | ||
cbcc6336 AL |
43 | trace_spice_vmc_write(out, len + out); |
44 | return out; | |
45 | } | |
46 | ||
47 | static int vmc_read(SpiceCharDeviceInstance *sin, uint8_t *buf, int len) | |
48 | { | |
49 | SpiceCharDriver *scd = container_of(sin, SpiceCharDriver, sin); | |
50 | int bytes = MIN(len, scd->datalen); | |
51 | ||
cbcc6336 AL |
52 | if (bytes > 0) { |
53 | memcpy(buf, scd->datapos, bytes); | |
54 | scd->datapos += bytes; | |
55 | scd->datalen -= bytes; | |
56 | assert(scd->datalen >= 0); | |
57 | if (scd->datalen == 0) { | |
58 | scd->datapos = 0; | |
59 | } | |
60 | } | |
61 | trace_spice_vmc_read(bytes, len); | |
62 | return bytes; | |
63 | } | |
64 | ||
5a49d3e9 MAL |
65 | #if SPICE_SERVER_VERSION >= 0x000c02 |
66 | static void vmc_event(SpiceCharDeviceInstance *sin, uint8_t event) | |
67 | { | |
68 | SpiceCharDriver *scd = container_of(sin, SpiceCharDriver, sin); | |
69 | int chr_event; | |
70 | ||
71 | switch (event) { | |
72 | case SPICE_PORT_EVENT_BREAK: | |
73 | chr_event = CHR_EVENT_BREAK; | |
74 | break; | |
75 | default: | |
5a49d3e9 MAL |
76 | return; |
77 | } | |
78 | ||
5a49d3e9 MAL |
79 | trace_spice_vmc_event(chr_event); |
80 | qemu_chr_be_event(scd->chr, chr_event); | |
81 | } | |
82 | #endif | |
83 | ||
f76e4c7f HG |
84 | static void vmc_state(SpiceCharDeviceInstance *sin, int connected) |
85 | { | |
86 | SpiceCharDriver *scd = container_of(sin, SpiceCharDriver, sin); | |
87 | ||
88 | #if SPICE_SERVER_VERSION < 0x000901 | |
89 | /* | |
90 | * spice-server calls the state callback for the agent channel when the | |
91 | * spice client connects / disconnects. Given that not the client but | |
92 | * the server is doing the parsing of the messages this is wrong as the | |
93 | * server is still listening. Worse, this causes the parser in the server | |
94 | * to go out of sync, so we ignore state calls for subtype vdagent | |
95 | * spicevmc chardevs. For the full story see: | |
96 | * http://lists.freedesktop.org/archives/spice-devel/2011-July/004837.html | |
97 | */ | |
98 | if (strcmp(sin->subtype, "vdagent") == 0) { | |
99 | return; | |
100 | } | |
101 | #endif | |
102 | ||
103 | if ((scd->chr->opened && connected) || | |
104 | (!scd->chr->opened && !connected)) { | |
105 | return; | |
106 | } | |
107 | ||
108 | qemu_chr_be_event(scd->chr, | |
109 | connected ? CHR_EVENT_OPENED : CHR_EVENT_CLOSED); | |
110 | } | |
111 | ||
cbcc6336 AL |
112 | static SpiceCharDeviceInterface vmc_interface = { |
113 | .base.type = SPICE_INTERFACE_CHAR_DEVICE, | |
114 | .base.description = "spice virtual channel char device", | |
115 | .base.major_version = SPICE_INTERFACE_CHAR_DEVICE_MAJOR, | |
116 | .base.minor_version = SPICE_INTERFACE_CHAR_DEVICE_MINOR, | |
f76e4c7f | 117 | .state = vmc_state, |
cbcc6336 AL |
118 | .write = vmc_write, |
119 | .read = vmc_read, | |
5a49d3e9 MAL |
120 | #if SPICE_SERVER_VERSION >= 0x000c02 |
121 | .event = vmc_event, | |
122 | #endif | |
cbcc6336 AL |
123 | }; |
124 | ||
125 | ||
126 | static void vmc_register_interface(SpiceCharDriver *scd) | |
127 | { | |
128 | if (scd->active) { | |
129 | return; | |
130 | } | |
cbcc6336 AL |
131 | scd->sin.base.sif = &vmc_interface.base; |
132 | qemu_spice_add_interface(&scd->sin.base); | |
133 | scd->active = true; | |
134 | trace_spice_vmc_register_interface(scd); | |
135 | } | |
136 | ||
137 | static void vmc_unregister_interface(SpiceCharDriver *scd) | |
138 | { | |
139 | if (!scd->active) { | |
140 | return; | |
141 | } | |
cbcc6336 AL |
142 | spice_server_remove_interface(&scd->sin.base); |
143 | scd->active = false; | |
144 | trace_spice_vmc_unregister_interface(scd); | |
145 | } | |
146 | ||
147 | ||
148 | static int spice_chr_write(CharDriverState *chr, const uint8_t *buf, int len) | |
149 | { | |
150 | SpiceCharDriver *s = chr->opaque; | |
151 | ||
cbcc6336 AL |
152 | vmc_register_interface(s); |
153 | assert(s->datalen == 0); | |
154 | if (s->bufsize < len) { | |
155 | s->bufsize = len; | |
7267c094 | 156 | s->buffer = g_realloc(s->buffer, s->bufsize); |
cbcc6336 AL |
157 | } |
158 | memcpy(s->buffer, buf, len); | |
159 | s->datapos = s->buffer; | |
160 | s->datalen = len; | |
161 | spice_server_char_device_wakeup(&s->sin); | |
162 | return len; | |
163 | } | |
164 | ||
165 | static void spice_chr_close(struct CharDriverState *chr) | |
166 | { | |
167 | SpiceCharDriver *s = chr->opaque; | |
168 | ||
cbcc6336 | 169 | vmc_unregister_interface(s); |
7a5448ce | 170 | QLIST_REMOVE(s, next); |
5e9b473a HG |
171 | |
172 | g_free((char *)s->sin.subtype); | |
173 | #if SPICE_SERVER_VERSION >= 0x000c02 | |
174 | g_free((char *)s->sin.portname); | |
175 | #endif | |
7267c094 | 176 | g_free(s); |
cbcc6336 AL |
177 | } |
178 | ||
cd8f7df2 HG |
179 | static void spice_chr_guest_open(struct CharDriverState *chr) |
180 | { | |
181 | SpiceCharDriver *s = chr->opaque; | |
182 | vmc_register_interface(s); | |
183 | } | |
184 | ||
185 | static void spice_chr_guest_close(struct CharDriverState *chr) | |
186 | { | |
187 | SpiceCharDriver *s = chr->opaque; | |
188 | vmc_unregister_interface(s); | |
189 | } | |
190 | ||
cbcc6336 AL |
191 | static void print_allowed_subtypes(void) |
192 | { | |
193 | const char** psubtype; | |
194 | int i; | |
195 | ||
196 | fprintf(stderr, "allowed names: "); | |
197 | for(i=0, psubtype = spice_server_char_device_recognized_subtypes(); | |
198 | *psubtype != NULL; ++psubtype, ++i) { | |
199 | if (i == 0) { | |
200 | fprintf(stderr, "%s", *psubtype); | |
201 | } else { | |
202 | fprintf(stderr, ", %s", *psubtype); | |
203 | } | |
204 | } | |
205 | fprintf(stderr, "\n"); | |
206 | } | |
207 | ||
cd153e2a | 208 | static CharDriverState *chr_open(const char *subtype) |
cbcc6336 AL |
209 | { |
210 | CharDriverState *chr; | |
211 | SpiceCharDriver *s; | |
71b423f4 MAL |
212 | |
213 | chr = g_malloc0(sizeof(CharDriverState)); | |
214 | s = g_malloc0(sizeof(SpiceCharDriver)); | |
215 | s->chr = chr; | |
71b423f4 | 216 | s->active = false; |
5e9b473a | 217 | s->sin.subtype = g_strdup(subtype); |
71b423f4 MAL |
218 | chr->opaque = s; |
219 | chr->chr_write = spice_chr_write; | |
220 | chr->chr_close = spice_chr_close; | |
221 | chr->chr_guest_open = spice_chr_guest_open; | |
222 | chr->chr_guest_close = spice_chr_guest_close; | |
223 | ||
7a5448ce MAL |
224 | QLIST_INSERT_HEAD(&spice_chars, s, next); |
225 | ||
71b423f4 MAL |
226 | return chr; |
227 | } | |
228 | ||
cd153e2a | 229 | CharDriverState *qemu_chr_open_spice_vmc(const char *type) |
71b423f4 MAL |
230 | { |
231 | CharDriverState *chr; | |
71b423f4 | 232 | const char **psubtype = spice_server_char_device_recognized_subtypes(); |
cbcc6336 | 233 | |
cd153e2a | 234 | if (type == NULL) { |
cbcc6336 AL |
235 | fprintf(stderr, "spice-qemu-char: missing name parameter\n"); |
236 | print_allowed_subtypes(); | |
1f51470d | 237 | return NULL; |
cbcc6336 | 238 | } |
cd153e2a GH |
239 | for (; *psubtype != NULL; ++psubtype) { |
240 | if (strcmp(type, *psubtype) == 0) { | |
cbcc6336 AL |
241 | break; |
242 | } | |
243 | } | |
cd153e2a GH |
244 | if (*psubtype == NULL) { |
245 | fprintf(stderr, "spice-qemu-char: unsupported type: %s\n", type); | |
cbcc6336 | 246 | print_allowed_subtypes(); |
1f51470d | 247 | return NULL; |
cbcc6336 AL |
248 | } |
249 | ||
cd153e2a | 250 | chr = chr_open(type); |
cbcc6336 | 251 | |
f76e4c7f HG |
252 | #if SPICE_SERVER_VERSION < 0x000901 |
253 | /* See comment in vmc_state() */ | |
cd153e2a | 254 | if (strcmp(type, "vdagent") == 0) { |
f76e4c7f HG |
255 | qemu_chr_generic_open(chr); |
256 | } | |
257 | #endif | |
cbcc6336 | 258 | |
1f51470d | 259 | return chr; |
cbcc6336 | 260 | } |
5a49d3e9 MAL |
261 | |
262 | #if SPICE_SERVER_VERSION >= 0x000c02 | |
cd153e2a | 263 | CharDriverState *qemu_chr_open_spice_port(const char *name) |
5a49d3e9 MAL |
264 | { |
265 | CharDriverState *chr; | |
266 | SpiceCharDriver *s; | |
5a49d3e9 MAL |
267 | |
268 | if (name == NULL) { | |
269 | fprintf(stderr, "spice-qemu-char: missing name parameter\n"); | |
270 | return NULL; | |
271 | } | |
272 | ||
cd153e2a | 273 | chr = chr_open("port"); |
5a49d3e9 | 274 | s = chr->opaque; |
5e9b473a | 275 | s->sin.portname = g_strdup(name); |
5a49d3e9 MAL |
276 | |
277 | return chr; | |
278 | } | |
afd0b409 MAL |
279 | |
280 | void qemu_spice_register_ports(void) | |
281 | { | |
282 | SpiceCharDriver *s; | |
283 | ||
284 | QLIST_FOREACH(s, &spice_chars, next) { | |
285 | if (s->sin.portname == NULL) { | |
286 | continue; | |
287 | } | |
288 | vmc_register_interface(s); | |
289 | } | |
290 | } | |
5a49d3e9 | 291 | #endif |
26c60614 | 292 | |
cd153e2a GH |
293 | static void qemu_chr_parse_spice_vmc(QemuOpts *opts, ChardevBackend *backend, |
294 | Error **errp) | |
295 | { | |
296 | const char *name = qemu_opt_get(opts, "name"); | |
297 | ||
298 | if (name == NULL) { | |
299 | error_setg(errp, "chardev: spice channel: no name given"); | |
300 | return; | |
301 | } | |
302 | backend->spicevmc = g_new0(ChardevSpiceChannel, 1); | |
303 | backend->spicevmc->type = g_strdup(name); | |
304 | } | |
305 | ||
306 | static void qemu_chr_parse_spice_port(QemuOpts *opts, ChardevBackend *backend, | |
307 | Error **errp) | |
308 | { | |
309 | const char *name = qemu_opt_get(opts, "name"); | |
310 | ||
311 | if (name == NULL) { | |
312 | error_setg(errp, "chardev: spice port: no name given"); | |
313 | return; | |
314 | } | |
315 | backend->spiceport = g_new0(ChardevSpicePort, 1); | |
316 | backend->spiceport->fqdn = g_strdup(name); | |
317 | } | |
318 | ||
26c60614 AL |
319 | static void register_types(void) |
320 | { | |
cd153e2a GH |
321 | register_char_driver_qapi("spicevmc", CHARDEV_BACKEND_KIND_SPICEVMC, |
322 | qemu_chr_parse_spice_vmc); | |
323 | register_char_driver_qapi("spiceport", CHARDEV_BACKEND_KIND_SPICEPORT, | |
324 | qemu_chr_parse_spice_port); | |
26c60614 AL |
325 | } |
326 | ||
327 | type_init(register_types); |