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cbcc6336 AL |
1 | #include "config-host.h" |
2 | #include "trace.h" | |
3 | #include "ui/qemu-spice.h" | |
4 | #include <spice.h> | |
5 | #include <spice-experimental.h> | |
5a49d3e9 | 6 | #include <spice/protocol.h> |
cbcc6336 AL |
7 | |
8 | #include "osdep.h" | |
9 | ||
10 | #define dprintf(_scd, _level, _fmt, ...) \ | |
11 | do { \ | |
12 | static unsigned __dprintf_counter = 0; \ | |
13 | if (_scd->debug >= _level) { \ | |
14 | fprintf(stderr, "scd: %3d: " _fmt, ++__dprintf_counter, ## __VA_ARGS__);\ | |
15 | } \ | |
16 | } while (0) | |
17 | ||
cbcc6336 AL |
18 | typedef struct SpiceCharDriver { |
19 | CharDriverState* chr; | |
20 | SpiceCharDeviceInstance sin; | |
21 | char *subtype; | |
22 | bool active; | |
23 | uint8_t *buffer; | |
24 | uint8_t *datapos; | |
25 | ssize_t bufsize, datalen; | |
26 | uint32_t debug; | |
7a5448ce | 27 | QLIST_ENTRY(SpiceCharDriver) next; |
cbcc6336 AL |
28 | } SpiceCharDriver; |
29 | ||
7a5448ce MAL |
30 | static QLIST_HEAD(, SpiceCharDriver) spice_chars = |
31 | QLIST_HEAD_INITIALIZER(spice_chars); | |
32 | ||
cbcc6336 AL |
33 | static int vmc_write(SpiceCharDeviceInstance *sin, const uint8_t *buf, int len) |
34 | { | |
35 | SpiceCharDriver *scd = container_of(sin, SpiceCharDriver, sin); | |
36 | ssize_t out = 0; | |
37 | ssize_t last_out; | |
38 | uint8_t* p = (uint8_t*)buf; | |
39 | ||
40 | while (len > 0) { | |
07a54d70 MAL |
41 | last_out = MIN(len, qemu_chr_be_can_write(scd->chr)); |
42 | if (last_out <= 0) { | |
cbcc6336 AL |
43 | break; |
44 | } | |
fa5efccb | 45 | qemu_chr_be_write(scd->chr, p, last_out); |
35106c2d HG |
46 | out += last_out; |
47 | len -= last_out; | |
48 | p += last_out; | |
cbcc6336 AL |
49 | } |
50 | ||
7b6c7369 | 51 | dprintf(scd, 3, "%s: %zu/%zd\n", __func__, out, len + out); |
cbcc6336 AL |
52 | trace_spice_vmc_write(out, len + out); |
53 | return out; | |
54 | } | |
55 | ||
56 | static int vmc_read(SpiceCharDeviceInstance *sin, uint8_t *buf, int len) | |
57 | { | |
58 | SpiceCharDriver *scd = container_of(sin, SpiceCharDriver, sin); | |
59 | int bytes = MIN(len, scd->datalen); | |
60 | ||
61 | dprintf(scd, 2, "%s: %p %d/%d/%zd\n", __func__, scd->datapos, len, bytes, scd->datalen); | |
62 | if (bytes > 0) { | |
63 | memcpy(buf, scd->datapos, bytes); | |
64 | scd->datapos += bytes; | |
65 | scd->datalen -= bytes; | |
66 | assert(scd->datalen >= 0); | |
67 | if (scd->datalen == 0) { | |
68 | scd->datapos = 0; | |
69 | } | |
70 | } | |
71 | trace_spice_vmc_read(bytes, len); | |
72 | return bytes; | |
73 | } | |
74 | ||
5a49d3e9 MAL |
75 | #if SPICE_SERVER_VERSION >= 0x000c02 |
76 | static void vmc_event(SpiceCharDeviceInstance *sin, uint8_t event) | |
77 | { | |
78 | SpiceCharDriver *scd = container_of(sin, SpiceCharDriver, sin); | |
79 | int chr_event; | |
80 | ||
81 | switch (event) { | |
82 | case SPICE_PORT_EVENT_BREAK: | |
83 | chr_event = CHR_EVENT_BREAK; | |
84 | break; | |
85 | default: | |
86 | dprintf(scd, 2, "%s: unknown %d\n", __func__, event); | |
87 | return; | |
88 | } | |
89 | ||
90 | dprintf(scd, 2, "%s: %d\n", __func__, event); | |
91 | trace_spice_vmc_event(chr_event); | |
92 | qemu_chr_be_event(scd->chr, chr_event); | |
93 | } | |
94 | #endif | |
95 | ||
f76e4c7f HG |
96 | static void vmc_state(SpiceCharDeviceInstance *sin, int connected) |
97 | { | |
98 | SpiceCharDriver *scd = container_of(sin, SpiceCharDriver, sin); | |
99 | ||
100 | #if SPICE_SERVER_VERSION < 0x000901 | |
101 | /* | |
102 | * spice-server calls the state callback for the agent channel when the | |
103 | * spice client connects / disconnects. Given that not the client but | |
104 | * the server is doing the parsing of the messages this is wrong as the | |
105 | * server is still listening. Worse, this causes the parser in the server | |
106 | * to go out of sync, so we ignore state calls for subtype vdagent | |
107 | * spicevmc chardevs. For the full story see: | |
108 | * http://lists.freedesktop.org/archives/spice-devel/2011-July/004837.html | |
109 | */ | |
110 | if (strcmp(sin->subtype, "vdagent") == 0) { | |
111 | return; | |
112 | } | |
113 | #endif | |
114 | ||
115 | if ((scd->chr->opened && connected) || | |
116 | (!scd->chr->opened && !connected)) { | |
117 | return; | |
118 | } | |
119 | ||
120 | qemu_chr_be_event(scd->chr, | |
121 | connected ? CHR_EVENT_OPENED : CHR_EVENT_CLOSED); | |
122 | } | |
123 | ||
cbcc6336 AL |
124 | static SpiceCharDeviceInterface vmc_interface = { |
125 | .base.type = SPICE_INTERFACE_CHAR_DEVICE, | |
126 | .base.description = "spice virtual channel char device", | |
127 | .base.major_version = SPICE_INTERFACE_CHAR_DEVICE_MAJOR, | |
128 | .base.minor_version = SPICE_INTERFACE_CHAR_DEVICE_MINOR, | |
f76e4c7f | 129 | .state = vmc_state, |
cbcc6336 AL |
130 | .write = vmc_write, |
131 | .read = vmc_read, | |
5a49d3e9 MAL |
132 | #if SPICE_SERVER_VERSION >= 0x000c02 |
133 | .event = vmc_event, | |
134 | #endif | |
cbcc6336 AL |
135 | }; |
136 | ||
137 | ||
138 | static void vmc_register_interface(SpiceCharDriver *scd) | |
139 | { | |
140 | if (scd->active) { | |
141 | return; | |
142 | } | |
143 | dprintf(scd, 1, "%s\n", __func__); | |
144 | scd->sin.base.sif = &vmc_interface.base; | |
145 | qemu_spice_add_interface(&scd->sin.base); | |
146 | scd->active = true; | |
147 | trace_spice_vmc_register_interface(scd); | |
148 | } | |
149 | ||
150 | static void vmc_unregister_interface(SpiceCharDriver *scd) | |
151 | { | |
152 | if (!scd->active) { | |
153 | return; | |
154 | } | |
155 | dprintf(scd, 1, "%s\n", __func__); | |
156 | spice_server_remove_interface(&scd->sin.base); | |
157 | scd->active = false; | |
158 | trace_spice_vmc_unregister_interface(scd); | |
159 | } | |
160 | ||
161 | ||
162 | static int spice_chr_write(CharDriverState *chr, const uint8_t *buf, int len) | |
163 | { | |
164 | SpiceCharDriver *s = chr->opaque; | |
165 | ||
166 | dprintf(s, 2, "%s: %d\n", __func__, len); | |
167 | vmc_register_interface(s); | |
168 | assert(s->datalen == 0); | |
169 | if (s->bufsize < len) { | |
170 | s->bufsize = len; | |
7267c094 | 171 | s->buffer = g_realloc(s->buffer, s->bufsize); |
cbcc6336 AL |
172 | } |
173 | memcpy(s->buffer, buf, len); | |
174 | s->datapos = s->buffer; | |
175 | s->datalen = len; | |
176 | spice_server_char_device_wakeup(&s->sin); | |
177 | return len; | |
178 | } | |
179 | ||
180 | static void spice_chr_close(struct CharDriverState *chr) | |
181 | { | |
182 | SpiceCharDriver *s = chr->opaque; | |
183 | ||
184 | printf("%s\n", __func__); | |
185 | vmc_unregister_interface(s); | |
7a5448ce | 186 | QLIST_REMOVE(s, next); |
7267c094 | 187 | g_free(s); |
cbcc6336 AL |
188 | } |
189 | ||
cd8f7df2 HG |
190 | static void spice_chr_guest_open(struct CharDriverState *chr) |
191 | { | |
192 | SpiceCharDriver *s = chr->opaque; | |
193 | vmc_register_interface(s); | |
194 | } | |
195 | ||
196 | static void spice_chr_guest_close(struct CharDriverState *chr) | |
197 | { | |
198 | SpiceCharDriver *s = chr->opaque; | |
199 | vmc_unregister_interface(s); | |
200 | } | |
201 | ||
cbcc6336 AL |
202 | static void print_allowed_subtypes(void) |
203 | { | |
204 | const char** psubtype; | |
205 | int i; | |
206 | ||
207 | fprintf(stderr, "allowed names: "); | |
208 | for(i=0, psubtype = spice_server_char_device_recognized_subtypes(); | |
209 | *psubtype != NULL; ++psubtype, ++i) { | |
210 | if (i == 0) { | |
211 | fprintf(stderr, "%s", *psubtype); | |
212 | } else { | |
213 | fprintf(stderr, ", %s", *psubtype); | |
214 | } | |
215 | } | |
216 | fprintf(stderr, "\n"); | |
217 | } | |
218 | ||
71b423f4 | 219 | static CharDriverState *chr_open(QemuOpts *opts, const char *subtype) |
cbcc6336 AL |
220 | { |
221 | CharDriverState *chr; | |
222 | SpiceCharDriver *s; | |
cbcc6336 | 223 | uint32_t debug = qemu_opt_get_number(opts, "debug", 0); |
71b423f4 MAL |
224 | |
225 | chr = g_malloc0(sizeof(CharDriverState)); | |
226 | s = g_malloc0(sizeof(SpiceCharDriver)); | |
227 | s->chr = chr; | |
228 | s->debug = debug; | |
229 | s->active = false; | |
230 | s->sin.subtype = subtype; | |
231 | chr->opaque = s; | |
232 | chr->chr_write = spice_chr_write; | |
233 | chr->chr_close = spice_chr_close; | |
234 | chr->chr_guest_open = spice_chr_guest_open; | |
235 | chr->chr_guest_close = spice_chr_guest_close; | |
236 | ||
7a5448ce MAL |
237 | QLIST_INSERT_HEAD(&spice_chars, s, next); |
238 | ||
71b423f4 MAL |
239 | return chr; |
240 | } | |
241 | ||
242 | CharDriverState *qemu_chr_open_spice(QemuOpts *opts) | |
243 | { | |
244 | CharDriverState *chr; | |
245 | const char *name = qemu_opt_get(opts, "name"); | |
246 | const char **psubtype = spice_server_char_device_recognized_subtypes(); | |
cbcc6336 AL |
247 | const char *subtype = NULL; |
248 | ||
249 | if (name == NULL) { | |
250 | fprintf(stderr, "spice-qemu-char: missing name parameter\n"); | |
251 | print_allowed_subtypes(); | |
1f51470d | 252 | return NULL; |
cbcc6336 AL |
253 | } |
254 | for(;*psubtype != NULL; ++psubtype) { | |
255 | if (strcmp(name, *psubtype) == 0) { | |
256 | subtype = *psubtype; | |
257 | break; | |
258 | } | |
259 | } | |
260 | if (subtype == NULL) { | |
4f5c0177 | 261 | fprintf(stderr, "spice-qemu-char: unsupported name: %s\n", name); |
cbcc6336 | 262 | print_allowed_subtypes(); |
1f51470d | 263 | return NULL; |
cbcc6336 AL |
264 | } |
265 | ||
71b423f4 | 266 | chr = chr_open(opts, subtype); |
cbcc6336 | 267 | |
f76e4c7f HG |
268 | #if SPICE_SERVER_VERSION < 0x000901 |
269 | /* See comment in vmc_state() */ | |
270 | if (strcmp(subtype, "vdagent") == 0) { | |
271 | qemu_chr_generic_open(chr); | |
272 | } | |
273 | #endif | |
cbcc6336 | 274 | |
1f51470d | 275 | return chr; |
cbcc6336 | 276 | } |
5a49d3e9 MAL |
277 | |
278 | #if SPICE_SERVER_VERSION >= 0x000c02 | |
279 | CharDriverState *qemu_chr_open_spice_port(QemuOpts *opts) | |
280 | { | |
281 | CharDriverState *chr; | |
282 | SpiceCharDriver *s; | |
283 | const char *name = qemu_opt_get(opts, "name"); | |
284 | ||
285 | if (name == NULL) { | |
286 | fprintf(stderr, "spice-qemu-char: missing name parameter\n"); | |
287 | return NULL; | |
288 | } | |
289 | ||
290 | chr = chr_open(opts, "port"); | |
291 | s = chr->opaque; | |
292 | s->sin.portname = name; | |
293 | ||
294 | return chr; | |
295 | } | |
afd0b409 MAL |
296 | |
297 | void qemu_spice_register_ports(void) | |
298 | { | |
299 | SpiceCharDriver *s; | |
300 | ||
301 | QLIST_FOREACH(s, &spice_chars, next) { | |
302 | if (s->sin.portname == NULL) { | |
303 | continue; | |
304 | } | |
305 | vmc_register_interface(s); | |
306 | } | |
307 | } | |
5a49d3e9 | 308 | #endif |