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Commit | Line | Data |
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48ff7a62 MR |
1 | /* |
2 | * QEMU Guest Agent | |
3 | * | |
4 | * Copyright IBM Corp. 2011 | |
5 | * | |
6 | * Authors: | |
7 | * Adam Litke <aglitke@linux.vnet.ibm.com> | |
8 | * Michael Roth <mdroth@linux.vnet.ibm.com> | |
9 | * | |
10 | * This work is licensed under the terms of the GNU GPL, version 2 or later. | |
11 | * See the COPYING file in the top-level directory. | |
12 | */ | |
13 | #include <stdlib.h> | |
14 | #include <stdio.h> | |
15 | #include <stdbool.h> | |
16 | #include <glib.h> | |
48ff7a62 | 17 | #include <getopt.h> |
39097daf | 18 | #include <glib/gstdio.h> |
d8ca685a | 19 | #ifndef _WIN32 |
48ff7a62 | 20 | #include <syslog.h> |
11d0f125 | 21 | #include <sys/wait.h> |
f789aa7b | 22 | #include <sys/stat.h> |
d8ca685a | 23 | #endif |
7b1b5d19 PB |
24 | #include "qapi/qmp/json-streamer.h" |
25 | #include "qapi/qmp/json-parser.h" | |
26 | #include "qapi/qmp/qint.h" | |
27 | #include "qapi/qmp/qjson.h" | |
48ff7a62 | 28 | #include "qga/guest-agent-core.h" |
1de7afc9 | 29 | #include "qemu/module.h" |
48ff7a62 | 30 | #include "signal.h" |
7b1b5d19 PB |
31 | #include "qapi/qmp/qerror.h" |
32 | #include "qapi/qmp/dispatch.h" | |
125b310e | 33 | #include "qga/channel.h" |
39097daf | 34 | #include "qemu/bswap.h" |
bc62fa03 MR |
35 | #ifdef _WIN32 |
36 | #include "qga/service-win32.h" | |
37 | #include <windows.h> | |
38 | #endif | |
ec0f694c TS |
39 | #ifdef __linux__ |
40 | #include <linux/fs.h> | |
41 | #ifdef FIFREEZE | |
42 | #define CONFIG_FSFREEZE | |
43 | #endif | |
44 | #endif | |
48ff7a62 | 45 | |
7868e26e | 46 | #ifndef _WIN32 |
48ff7a62 | 47 | #define QGA_VIRTIO_PATH_DEFAULT "/dev/virtio-ports/org.qemu.guest_agent.0" |
7868e26e MR |
48 | #else |
49 | #define QGA_VIRTIO_PATH_DEFAULT "\\\\.\\Global\\org.qemu.guest_agent.0" | |
50 | #endif | |
6a3c8c14 LC |
51 | #define QGA_STATEDIR_DEFAULT CONFIG_QEMU_LOCALSTATEDIR "/run" |
52 | #define QGA_PIDFILE_DEFAULT QGA_STATEDIR_DEFAULT "/qemu-ga.pid" | |
ec0f694c TS |
53 | #ifdef CONFIG_FSFREEZE |
54 | #define QGA_FSFREEZE_HOOK_DEFAULT CONFIG_QEMU_CONFDIR "/fsfreeze-hook" | |
55 | #endif | |
3cf0bed8 | 56 | #define QGA_SENTINEL_BYTE 0xFF |
48ff7a62 | 57 | |
39097daf MR |
58 | typedef struct GAPersistentState { |
59 | #define QGA_PSTATE_DEFAULT_FD_COUNTER 1000 | |
60 | int64_t fd_counter; | |
61 | } GAPersistentState; | |
62 | ||
48ff7a62 MR |
63 | struct GAState { |
64 | JSONMessageParser parser; | |
65 | GMainLoop *main_loop; | |
125b310e | 66 | GAChannel *channel; |
48ff7a62 MR |
67 | bool virtio; /* fastpath to check for virtio to deal with poll() quirks */ |
68 | GACommandState *command_state; | |
69 | GLogLevelFlags log_level; | |
70 | FILE *log_file; | |
71 | bool logging_enabled; | |
bc62fa03 MR |
72 | #ifdef _WIN32 |
73 | GAService service; | |
74 | #endif | |
3cf0bed8 | 75 | bool delimit_response; |
f22d85e9 MR |
76 | bool frozen; |
77 | GList *blacklist; | |
f789aa7b MR |
78 | const char *state_filepath_isfrozen; |
79 | struct { | |
80 | const char *log_filepath; | |
81 | const char *pid_filepath; | |
82 | } deferred_options; | |
ec0f694c TS |
83 | #ifdef CONFIG_FSFREEZE |
84 | const char *fsfreeze_hook; | |
85 | #endif | |
39097daf MR |
86 | const gchar *pstate_filepath; |
87 | GAPersistentState pstate; | |
48ff7a62 MR |
88 | }; |
89 | ||
3cf0bed8 | 90 | struct GAState *ga_state; |
48ff7a62 | 91 | |
f22d85e9 MR |
92 | /* commands that are safe to issue while filesystems are frozen */ |
93 | static const char *ga_freeze_whitelist[] = { | |
94 | "guest-ping", | |
95 | "guest-info", | |
96 | "guest-sync", | |
c5dcb6ae | 97 | "guest-sync-delimited", |
f22d85e9 MR |
98 | "guest-fsfreeze-status", |
99 | "guest-fsfreeze-thaw", | |
100 | NULL | |
101 | }; | |
102 | ||
bc62fa03 MR |
103 | #ifdef _WIN32 |
104 | DWORD WINAPI service_ctrl_handler(DWORD ctrl, DWORD type, LPVOID data, | |
105 | LPVOID ctx); | |
106 | VOID WINAPI service_main(DWORD argc, TCHAR *argv[]); | |
107 | #endif | |
108 | ||
48ff7a62 MR |
109 | static void quit_handler(int sig) |
110 | { | |
f22d85e9 MR |
111 | /* if we're frozen, don't exit unless we're absolutely forced to, |
112 | * because it's basically impossible for graceful exit to complete | |
113 | * unless all log/pid files are on unfreezable filesystems. there's | |
114 | * also a very likely chance killing the agent before unfreezing | |
115 | * the filesystems is a mistake (or will be viewed as one later). | |
116 | */ | |
117 | if (ga_is_frozen(ga_state)) { | |
118 | return; | |
119 | } | |
2542bfd5 | 120 | g_debug("received signal num %d, quitting", sig); |
48ff7a62 MR |
121 | |
122 | if (g_main_loop_is_running(ga_state->main_loop)) { | |
123 | g_main_loop_quit(ga_state->main_loop); | |
124 | } | |
125 | } | |
126 | ||
bc62fa03 | 127 | #ifndef _WIN32 |
125b310e | 128 | static gboolean register_signal_handlers(void) |
48ff7a62 | 129 | { |
dc8764f0 | 130 | struct sigaction sigact; |
48ff7a62 MR |
131 | int ret; |
132 | ||
133 | memset(&sigact, 0, sizeof(struct sigaction)); | |
134 | sigact.sa_handler = quit_handler; | |
135 | ||
136 | ret = sigaction(SIGINT, &sigact, NULL); | |
137 | if (ret == -1) { | |
138 | g_error("error configuring signal handler: %s", strerror(errno)); | |
48ff7a62 MR |
139 | } |
140 | ret = sigaction(SIGTERM, &sigact, NULL); | |
141 | if (ret == -1) { | |
142 | g_error("error configuring signal handler: %s", strerror(errno)); | |
143 | } | |
11d0f125 | 144 | |
125b310e | 145 | return true; |
48ff7a62 | 146 | } |
04b4e75f LC |
147 | |
148 | /* TODO: use this in place of all post-fork() fclose(std*) callers */ | |
149 | void reopen_fd_to_null(int fd) | |
150 | { | |
151 | int nullfd; | |
152 | ||
153 | nullfd = open("/dev/null", O_RDWR); | |
154 | if (nullfd < 0) { | |
155 | return; | |
156 | } | |
157 | ||
158 | dup2(nullfd, fd); | |
159 | ||
160 | if (nullfd != fd) { | |
161 | close(nullfd); | |
162 | } | |
163 | } | |
d8ca685a | 164 | #endif |
48ff7a62 MR |
165 | |
166 | static void usage(const char *cmd) | |
167 | { | |
168 | printf( | |
4bdd0416 | 169 | "Usage: %s [-m <method> -p <path>] [<options>]\n" |
48ff7a62 MR |
170 | "QEMU Guest Agent %s\n" |
171 | "\n" | |
172 | " -m, --method transport method: one of unix-listen, virtio-serial, or\n" | |
173 | " isa-serial (virtio-serial is the default)\n" | |
4bdd0416 MR |
174 | " -p, --path device/socket path (the default for virtio-serial is:\n" |
175 | " %s)\n" | |
48ff7a62 MR |
176 | " -l, --logfile set logfile path, logs to stderr by default\n" |
177 | " -f, --pidfile specify pidfile (default is %s)\n" | |
ec0f694c TS |
178 | #ifdef CONFIG_FSFREEZE |
179 | " -F, --fsfreeze-hook\n" | |
180 | " enable fsfreeze hook. Accepts an optional argument that\n" | |
181 | " specifies script to run on freeze/thaw. Script will be\n" | |
182 | " called with 'freeze'/'thaw' arguments accordingly.\n" | |
183 | " (default is %s)\n" | |
184 | " If using -F with an argument, do not follow -F with a\n" | |
185 | " space.\n" | |
186 | " (for example: -F/var/run/fsfreezehook.sh)\n" | |
187 | #endif | |
f789aa7b MR |
188 | " -t, --statedir specify dir to store state information (absolute paths\n" |
189 | " only, default is %s)\n" | |
48ff7a62 MR |
190 | " -v, --verbose log extra debugging information\n" |
191 | " -V, --version print version information and exit\n" | |
192 | " -d, --daemonize become a daemon\n" | |
bc62fa03 MR |
193 | #ifdef _WIN32 |
194 | " -s, --service service commands: install, uninstall\n" | |
d8ca685a | 195 | #endif |
4bdd0416 | 196 | " -b, --blacklist comma-separated list of RPCs to disable (no spaces, \"?\"\n" |
abd6cf6d | 197 | " to list available RPCs)\n" |
48ff7a62 MR |
198 | " -h, --help display this help and exit\n" |
199 | "\n" | |
200 | "Report bugs to <mdroth@linux.vnet.ibm.com>\n" | |
8efacc43 | 201 | , cmd, QEMU_VERSION, QGA_VIRTIO_PATH_DEFAULT, QGA_PIDFILE_DEFAULT, |
ec0f694c TS |
202 | #ifdef CONFIG_FSFREEZE |
203 | QGA_FSFREEZE_HOOK_DEFAULT, | |
204 | #endif | |
f789aa7b | 205 | QGA_STATEDIR_DEFAULT); |
48ff7a62 MR |
206 | } |
207 | ||
48ff7a62 MR |
208 | static const char *ga_log_level_str(GLogLevelFlags level) |
209 | { | |
210 | switch (level & G_LOG_LEVEL_MASK) { | |
211 | case G_LOG_LEVEL_ERROR: | |
212 | return "error"; | |
213 | case G_LOG_LEVEL_CRITICAL: | |
214 | return "critical"; | |
215 | case G_LOG_LEVEL_WARNING: | |
216 | return "warning"; | |
217 | case G_LOG_LEVEL_MESSAGE: | |
218 | return "message"; | |
219 | case G_LOG_LEVEL_INFO: | |
220 | return "info"; | |
221 | case G_LOG_LEVEL_DEBUG: | |
222 | return "debug"; | |
223 | default: | |
224 | return "user"; | |
225 | } | |
226 | } | |
227 | ||
228 | bool ga_logging_enabled(GAState *s) | |
229 | { | |
230 | return s->logging_enabled; | |
231 | } | |
232 | ||
233 | void ga_disable_logging(GAState *s) | |
234 | { | |
235 | s->logging_enabled = false; | |
236 | } | |
237 | ||
238 | void ga_enable_logging(GAState *s) | |
239 | { | |
240 | s->logging_enabled = true; | |
241 | } | |
242 | ||
243 | static void ga_log(const gchar *domain, GLogLevelFlags level, | |
244 | const gchar *msg, gpointer opaque) | |
245 | { | |
246 | GAState *s = opaque; | |
247 | GTimeVal time; | |
248 | const char *level_str = ga_log_level_str(level); | |
249 | ||
250 | if (!ga_logging_enabled(s)) { | |
251 | return; | |
252 | } | |
253 | ||
254 | level &= G_LOG_LEVEL_MASK; | |
d8ca685a | 255 | #ifndef _WIN32 |
8f477478 | 256 | if (domain && strcmp(domain, "syslog") == 0) { |
48ff7a62 MR |
257 | syslog(LOG_INFO, "%s: %s", level_str, msg); |
258 | } else if (level & s->log_level) { | |
d8ca685a MR |
259 | #else |
260 | if (level & s->log_level) { | |
261 | #endif | |
48ff7a62 MR |
262 | g_get_current_time(&time); |
263 | fprintf(s->log_file, | |
264 | "%lu.%lu: %s: %s\n", time.tv_sec, time.tv_usec, level_str, msg); | |
265 | fflush(s->log_file); | |
266 | } | |
267 | } | |
268 | ||
3cf0bed8 MR |
269 | void ga_set_response_delimited(GAState *s) |
270 | { | |
271 | s->delimit_response = true; | |
272 | } | |
273 | ||
9e92f6d4 LC |
274 | static FILE *ga_open_logfile(const char *logfile) |
275 | { | |
276 | FILE *f; | |
277 | ||
278 | f = fopen(logfile, "a"); | |
279 | if (!f) { | |
280 | return NULL; | |
281 | } | |
282 | ||
283 | qemu_set_cloexec(fileno(f)); | |
284 | return f; | |
285 | } | |
286 | ||
f789aa7b MR |
287 | #ifndef _WIN32 |
288 | static bool ga_open_pidfile(const char *pidfile) | |
289 | { | |
290 | int pidfd; | |
291 | char pidstr[32]; | |
292 | ||
6ffacc5d | 293 | pidfd = qemu_open(pidfile, O_CREAT|O_WRONLY, S_IRUSR|S_IWUSR); |
f789aa7b MR |
294 | if (pidfd == -1 || lockf(pidfd, F_TLOCK, 0)) { |
295 | g_critical("Cannot lock pid file, %s", strerror(errno)); | |
4144f122 JM |
296 | if (pidfd != -1) { |
297 | close(pidfd); | |
298 | } | |
f789aa7b MR |
299 | return false; |
300 | } | |
301 | ||
5d27f9ce | 302 | if (ftruncate(pidfd, 0)) { |
f789aa7b MR |
303 | g_critical("Failed to truncate pid file"); |
304 | goto fail; | |
305 | } | |
9d6f1b73 | 306 | snprintf(pidstr, sizeof(pidstr), "%d\n", getpid()); |
f789aa7b MR |
307 | if (write(pidfd, pidstr, strlen(pidstr)) != strlen(pidstr)) { |
308 | g_critical("Failed to write pid file"); | |
309 | goto fail; | |
310 | } | |
311 | ||
03ac10f1 | 312 | /* keep pidfile open & locked forever */ |
f789aa7b MR |
313 | return true; |
314 | ||
315 | fail: | |
316 | unlink(pidfile); | |
03ac10f1 | 317 | close(pidfd); |
f789aa7b MR |
318 | return false; |
319 | } | |
320 | #else /* _WIN32 */ | |
321 | static bool ga_open_pidfile(const char *pidfile) | |
322 | { | |
323 | return true; | |
324 | } | |
325 | #endif | |
326 | ||
f22d85e9 MR |
327 | static gint ga_strcmp(gconstpointer str1, gconstpointer str2) |
328 | { | |
329 | return strcmp(str1, str2); | |
330 | } | |
331 | ||
332 | /* disable commands that aren't safe for fsfreeze */ | |
333 | static void ga_disable_non_whitelisted(void) | |
334 | { | |
335 | char **list_head, **list; | |
336 | bool whitelisted; | |
337 | int i; | |
338 | ||
339 | list_head = list = qmp_get_command_list(); | |
340 | while (*list != NULL) { | |
341 | whitelisted = false; | |
342 | i = 0; | |
343 | while (ga_freeze_whitelist[i] != NULL) { | |
344 | if (strcmp(*list, ga_freeze_whitelist[i]) == 0) { | |
345 | whitelisted = true; | |
346 | } | |
347 | i++; | |
348 | } | |
349 | if (!whitelisted) { | |
350 | g_debug("disabling command: %s", *list); | |
351 | qmp_disable_command(*list); | |
352 | } | |
353 | g_free(*list); | |
354 | list++; | |
355 | } | |
356 | g_free(list_head); | |
357 | } | |
358 | ||
a31f0531 | 359 | /* [re-]enable all commands, except those explicitly blacklisted by user */ |
f22d85e9 MR |
360 | static void ga_enable_non_blacklisted(GList *blacklist) |
361 | { | |
362 | char **list_head, **list; | |
363 | ||
364 | list_head = list = qmp_get_command_list(); | |
365 | while (*list != NULL) { | |
366 | if (g_list_find_custom(blacklist, *list, ga_strcmp) == NULL && | |
367 | !qmp_command_is_enabled(*list)) { | |
368 | g_debug("enabling command: %s", *list); | |
369 | qmp_enable_command(*list); | |
370 | } | |
371 | g_free(*list); | |
372 | list++; | |
373 | } | |
374 | g_free(list_head); | |
375 | } | |
376 | ||
f789aa7b MR |
377 | static bool ga_create_file(const char *path) |
378 | { | |
379 | int fd = open(path, O_CREAT | O_WRONLY, S_IWUSR | S_IRUSR); | |
380 | if (fd == -1) { | |
381 | g_warning("unable to open/create file %s: %s", path, strerror(errno)); | |
382 | return false; | |
383 | } | |
384 | close(fd); | |
385 | return true; | |
386 | } | |
387 | ||
388 | static bool ga_delete_file(const char *path) | |
389 | { | |
390 | int ret = unlink(path); | |
391 | if (ret == -1) { | |
392 | g_warning("unable to delete file: %s: %s", path, strerror(errno)); | |
393 | return false; | |
394 | } | |
395 | ||
396 | return true; | |
397 | } | |
398 | ||
f22d85e9 MR |
399 | bool ga_is_frozen(GAState *s) |
400 | { | |
401 | return s->frozen; | |
402 | } | |
403 | ||
404 | void ga_set_frozen(GAState *s) | |
405 | { | |
406 | if (ga_is_frozen(s)) { | |
407 | return; | |
408 | } | |
409 | /* disable all non-whitelisted (for frozen state) commands */ | |
410 | ga_disable_non_whitelisted(); | |
411 | g_warning("disabling logging due to filesystem freeze"); | |
412 | ga_disable_logging(s); | |
413 | s->frozen = true; | |
f789aa7b MR |
414 | if (!ga_create_file(s->state_filepath_isfrozen)) { |
415 | g_warning("unable to create %s, fsfreeze may not function properly", | |
416 | s->state_filepath_isfrozen); | |
417 | } | |
f22d85e9 MR |
418 | } |
419 | ||
420 | void ga_unset_frozen(GAState *s) | |
421 | { | |
422 | if (!ga_is_frozen(s)) { | |
423 | return; | |
424 | } | |
425 | ||
f789aa7b MR |
426 | /* if we delayed creation/opening of pid/log files due to being |
427 | * in a frozen state at start up, do it now | |
428 | */ | |
429 | if (s->deferred_options.log_filepath) { | |
9e92f6d4 | 430 | s->log_file = ga_open_logfile(s->deferred_options.log_filepath); |
f789aa7b MR |
431 | if (!s->log_file) { |
432 | s->log_file = stderr; | |
433 | } | |
434 | s->deferred_options.log_filepath = NULL; | |
435 | } | |
f22d85e9 | 436 | ga_enable_logging(s); |
f789aa7b MR |
437 | g_warning("logging re-enabled due to filesystem unfreeze"); |
438 | if (s->deferred_options.pid_filepath) { | |
439 | if (!ga_open_pidfile(s->deferred_options.pid_filepath)) { | |
440 | g_warning("failed to create/open pid file"); | |
441 | } | |
442 | s->deferred_options.pid_filepath = NULL; | |
443 | } | |
f22d85e9 MR |
444 | |
445 | /* enable all disabled, non-blacklisted commands */ | |
446 | ga_enable_non_blacklisted(s->blacklist); | |
447 | s->frozen = false; | |
f789aa7b MR |
448 | if (!ga_delete_file(s->state_filepath_isfrozen)) { |
449 | g_warning("unable to delete %s, fsfreeze may not function properly", | |
450 | s->state_filepath_isfrozen); | |
451 | } | |
f22d85e9 MR |
452 | } |
453 | ||
ec0f694c TS |
454 | #ifdef CONFIG_FSFREEZE |
455 | const char *ga_fsfreeze_hook(GAState *s) | |
456 | { | |
457 | return s->fsfreeze_hook; | |
458 | } | |
459 | #endif | |
460 | ||
48ff7a62 MR |
461 | static void become_daemon(const char *pidfile) |
462 | { | |
f789aa7b | 463 | #ifndef _WIN32 |
48ff7a62 | 464 | pid_t pid, sid; |
48ff7a62 MR |
465 | |
466 | pid = fork(); | |
467 | if (pid < 0) { | |
468 | exit(EXIT_FAILURE); | |
469 | } | |
470 | if (pid > 0) { | |
471 | exit(EXIT_SUCCESS); | |
472 | } | |
473 | ||
f789aa7b MR |
474 | if (pidfile) { |
475 | if (!ga_open_pidfile(pidfile)) { | |
476 | g_critical("failed to create pidfile"); | |
477 | exit(EXIT_FAILURE); | |
478 | } | |
48ff7a62 MR |
479 | } |
480 | ||
481 | umask(0); | |
482 | sid = setsid(); | |
483 | if (sid < 0) { | |
484 | goto fail; | |
485 | } | |
486 | if ((chdir("/")) < 0) { | |
487 | goto fail; | |
488 | } | |
489 | ||
226a4894 LC |
490 | reopen_fd_to_null(STDIN_FILENO); |
491 | reopen_fd_to_null(STDOUT_FILENO); | |
492 | reopen_fd_to_null(STDERR_FILENO); | |
48ff7a62 MR |
493 | return; |
494 | ||
495 | fail: | |
4bdb1a30 SW |
496 | if (pidfile) { |
497 | unlink(pidfile); | |
498 | } | |
48ff7a62 MR |
499 | g_critical("failed to daemonize"); |
500 | exit(EXIT_FAILURE); | |
d8ca685a | 501 | #endif |
f789aa7b | 502 | } |
48ff7a62 | 503 | |
125b310e | 504 | static int send_response(GAState *s, QObject *payload) |
48ff7a62 | 505 | { |
48ff7a62 | 506 | const char *buf; |
3cf0bed8 | 507 | QString *payload_qstr, *response_qstr; |
125b310e | 508 | GIOStatus status; |
48ff7a62 | 509 | |
125b310e | 510 | g_assert(payload && s->channel); |
48ff7a62 MR |
511 | |
512 | payload_qstr = qobject_to_json(payload); | |
513 | if (!payload_qstr) { | |
514 | return -EINVAL; | |
515 | } | |
516 | ||
3cf0bed8 MR |
517 | if (s->delimit_response) { |
518 | s->delimit_response = false; | |
519 | response_qstr = qstring_new(); | |
520 | qstring_append_chr(response_qstr, QGA_SENTINEL_BYTE); | |
521 | qstring_append(response_qstr, qstring_get_str(payload_qstr)); | |
522 | QDECREF(payload_qstr); | |
523 | } else { | |
524 | response_qstr = payload_qstr; | |
525 | } | |
526 | ||
527 | qstring_append_chr(response_qstr, '\n'); | |
528 | buf = qstring_get_str(response_qstr); | |
125b310e | 529 | status = ga_channel_write_all(s->channel, buf, strlen(buf)); |
3cf0bed8 | 530 | QDECREF(response_qstr); |
125b310e MR |
531 | if (status != G_IO_STATUS_NORMAL) { |
532 | return -EIO; | |
48ff7a62 | 533 | } |
125b310e MR |
534 | |
535 | return 0; | |
48ff7a62 MR |
536 | } |
537 | ||
538 | static void process_command(GAState *s, QDict *req) | |
539 | { | |
540 | QObject *rsp = NULL; | |
541 | int ret; | |
542 | ||
543 | g_assert(req); | |
544 | g_debug("processing command"); | |
545 | rsp = qmp_dispatch(QOBJECT(req)); | |
546 | if (rsp) { | |
125b310e | 547 | ret = send_response(s, rsp); |
48ff7a62 | 548 | if (ret) { |
125b310e | 549 | g_warning("error sending response: %s", strerror(ret)); |
48ff7a62 MR |
550 | } |
551 | qobject_decref(rsp); | |
48ff7a62 MR |
552 | } |
553 | } | |
554 | ||
555 | /* handle requests/control events coming in over the channel */ | |
556 | static void process_event(JSONMessageParser *parser, QList *tokens) | |
557 | { | |
558 | GAState *s = container_of(parser, GAState, parser); | |
559 | QObject *obj; | |
560 | QDict *qdict; | |
561 | Error *err = NULL; | |
562 | int ret; | |
563 | ||
564 | g_assert(s && parser); | |
565 | ||
566 | g_debug("process_event: called"); | |
567 | obj = json_parser_parse_err(tokens, NULL, &err); | |
568 | if (err || !obj || qobject_type(obj) != QTYPE_QDICT) { | |
569 | qobject_decref(obj); | |
570 | qdict = qdict_new(); | |
571 | if (!err) { | |
572 | g_warning("failed to parse event: unknown error"); | |
573 | error_set(&err, QERR_JSON_PARSING); | |
574 | } else { | |
575 | g_warning("failed to parse event: %s", error_get_pretty(err)); | |
576 | } | |
93b91c59 | 577 | qdict_put_obj(qdict, "error", qmp_build_error_object(err)); |
48ff7a62 MR |
578 | error_free(err); |
579 | } else { | |
580 | qdict = qobject_to_qdict(obj); | |
581 | } | |
582 | ||
583 | g_assert(qdict); | |
584 | ||
585 | /* handle host->guest commands */ | |
586 | if (qdict_haskey(qdict, "execute")) { | |
587 | process_command(s, qdict); | |
588 | } else { | |
589 | if (!qdict_haskey(qdict, "error")) { | |
590 | QDECREF(qdict); | |
591 | qdict = qdict_new(); | |
592 | g_warning("unrecognized payload format"); | |
593 | error_set(&err, QERR_UNSUPPORTED); | |
93b91c59 | 594 | qdict_put_obj(qdict, "error", qmp_build_error_object(err)); |
48ff7a62 MR |
595 | error_free(err); |
596 | } | |
125b310e | 597 | ret = send_response(s, QOBJECT(qdict)); |
48ff7a62 | 598 | if (ret) { |
125b310e | 599 | g_warning("error sending error response: %s", strerror(ret)); |
48ff7a62 MR |
600 | } |
601 | } | |
602 | ||
603 | QDECREF(qdict); | |
604 | } | |
605 | ||
125b310e MR |
606 | /* false return signals GAChannel to close the current client connection */ |
607 | static gboolean channel_event_cb(GIOCondition condition, gpointer data) | |
48ff7a62 MR |
608 | { |
609 | GAState *s = data; | |
125b310e | 610 | gchar buf[QGA_READ_COUNT_DEFAULT+1]; |
48ff7a62 MR |
611 | gsize count; |
612 | GError *err = NULL; | |
125b310e | 613 | GIOStatus status = ga_channel_read(s->channel, buf, QGA_READ_COUNT_DEFAULT, &count); |
48ff7a62 MR |
614 | if (err != NULL) { |
615 | g_warning("error reading channel: %s", err->message); | |
48ff7a62 MR |
616 | g_error_free(err); |
617 | return false; | |
618 | } | |
619 | switch (status) { | |
620 | case G_IO_STATUS_ERROR: | |
125b310e | 621 | g_warning("error reading channel"); |
48ff7a62 MR |
622 | return false; |
623 | case G_IO_STATUS_NORMAL: | |
125b310e | 624 | buf[count] = 0; |
48ff7a62 MR |
625 | g_debug("read data, count: %d, data: %s", (int)count, buf); |
626 | json_message_parser_feed(&s->parser, (char *)buf, (int)count); | |
125b310e MR |
627 | break; |
628 | case G_IO_STATUS_EOF: | |
629 | g_debug("received EOF"); | |
630 | if (!s->virtio) { | |
631 | return false; | |
632 | } | |
f5b79578 | 633 | /* fall through */ |
48ff7a62 MR |
634 | case G_IO_STATUS_AGAIN: |
635 | /* virtio causes us to spin here when no process is attached to | |
636 | * host-side chardev. sleep a bit to mitigate this | |
637 | */ | |
638 | if (s->virtio) { | |
639 | usleep(100*1000); | |
640 | } | |
641 | return true; | |
48ff7a62 MR |
642 | default: |
643 | g_warning("unknown channel read status, closing"); | |
48ff7a62 MR |
644 | return false; |
645 | } | |
646 | return true; | |
647 | } | |
648 | ||
125b310e | 649 | static gboolean channel_init(GAState *s, const gchar *method, const gchar *path) |
48ff7a62 | 650 | { |
125b310e | 651 | GAChannelMethod channel_method; |
48ff7a62 | 652 | |
125b310e MR |
653 | if (method == NULL) { |
654 | method = "virtio-serial"; | |
48ff7a62 MR |
655 | } |
656 | ||
125b310e MR |
657 | if (path == NULL) { |
658 | if (strcmp(method, "virtio-serial") != 0) { | |
48ff7a62 | 659 | g_critical("must specify a path for this channel"); |
125b310e | 660 | return false; |
48ff7a62 MR |
661 | } |
662 | /* try the default path for the virtio-serial port */ | |
125b310e | 663 | path = QGA_VIRTIO_PATH_DEFAULT; |
48ff7a62 MR |
664 | } |
665 | ||
125b310e MR |
666 | if (strcmp(method, "virtio-serial") == 0) { |
667 | s->virtio = true; /* virtio requires special handling in some cases */ | |
668 | channel_method = GA_CHANNEL_VIRTIO_SERIAL; | |
669 | } else if (strcmp(method, "isa-serial") == 0) { | |
670 | channel_method = GA_CHANNEL_ISA_SERIAL; | |
671 | } else if (strcmp(method, "unix-listen") == 0) { | |
672 | channel_method = GA_CHANNEL_UNIX_LISTEN; | |
48ff7a62 | 673 | } else { |
125b310e MR |
674 | g_critical("unsupported channel method/type: %s", method); |
675 | return false; | |
48ff7a62 MR |
676 | } |
677 | ||
125b310e MR |
678 | s->channel = ga_channel_new(channel_method, path, channel_event_cb, s); |
679 | if (!s->channel) { | |
680 | g_critical("failed to create guest agent channel"); | |
681 | return false; | |
682 | } | |
683 | ||
684 | return true; | |
48ff7a62 MR |
685 | } |
686 | ||
bc62fa03 MR |
687 | #ifdef _WIN32 |
688 | DWORD WINAPI service_ctrl_handler(DWORD ctrl, DWORD type, LPVOID data, | |
689 | LPVOID ctx) | |
690 | { | |
691 | DWORD ret = NO_ERROR; | |
692 | GAService *service = &ga_state->service; | |
693 | ||
694 | switch (ctrl) | |
695 | { | |
696 | case SERVICE_CONTROL_STOP: | |
697 | case SERVICE_CONTROL_SHUTDOWN: | |
698 | quit_handler(SIGTERM); | |
699 | service->status.dwCurrentState = SERVICE_STOP_PENDING; | |
700 | SetServiceStatus(service->status_handle, &service->status); | |
701 | break; | |
702 | ||
703 | default: | |
704 | ret = ERROR_CALL_NOT_IMPLEMENTED; | |
705 | } | |
706 | return ret; | |
707 | } | |
708 | ||
709 | VOID WINAPI service_main(DWORD argc, TCHAR *argv[]) | |
710 | { | |
711 | GAService *service = &ga_state->service; | |
712 | ||
713 | service->status_handle = RegisterServiceCtrlHandlerEx(QGA_SERVICE_NAME, | |
714 | service_ctrl_handler, NULL); | |
715 | ||
716 | if (service->status_handle == 0) { | |
717 | g_critical("Failed to register extended requests function!\n"); | |
718 | return; | |
719 | } | |
720 | ||
721 | service->status.dwServiceType = SERVICE_WIN32; | |
722 | service->status.dwCurrentState = SERVICE_RUNNING; | |
723 | service->status.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN; | |
724 | service->status.dwWin32ExitCode = NO_ERROR; | |
725 | service->status.dwServiceSpecificExitCode = NO_ERROR; | |
726 | service->status.dwCheckPoint = 0; | |
727 | service->status.dwWaitHint = 0; | |
728 | SetServiceStatus(service->status_handle, &service->status); | |
729 | ||
730 | g_main_loop_run(ga_state->main_loop); | |
731 | ||
732 | service->status.dwCurrentState = SERVICE_STOPPED; | |
733 | SetServiceStatus(service->status_handle, &service->status); | |
734 | } | |
735 | #endif | |
736 | ||
39097daf MR |
737 | static void set_persistent_state_defaults(GAPersistentState *pstate) |
738 | { | |
739 | g_assert(pstate); | |
740 | pstate->fd_counter = QGA_PSTATE_DEFAULT_FD_COUNTER; | |
741 | } | |
742 | ||
743 | static void persistent_state_from_keyfile(GAPersistentState *pstate, | |
744 | GKeyFile *keyfile) | |
745 | { | |
746 | g_assert(pstate); | |
747 | g_assert(keyfile); | |
748 | /* if any fields are missing, either because the file was tampered with | |
749 | * by agents of chaos, or because the field wasn't present at the time the | |
750 | * file was created, the best we can ever do is start over with the default | |
751 | * values. so load them now, and ignore any errors in accessing key-value | |
752 | * pairs | |
753 | */ | |
754 | set_persistent_state_defaults(pstate); | |
755 | ||
756 | if (g_key_file_has_key(keyfile, "global", "fd_counter", NULL)) { | |
757 | pstate->fd_counter = | |
4f306496 | 758 | g_key_file_get_integer(keyfile, "global", "fd_counter", NULL); |
39097daf MR |
759 | } |
760 | } | |
761 | ||
762 | static void persistent_state_to_keyfile(const GAPersistentState *pstate, | |
763 | GKeyFile *keyfile) | |
764 | { | |
765 | g_assert(pstate); | |
766 | g_assert(keyfile); | |
767 | ||
4f306496 | 768 | g_key_file_set_integer(keyfile, "global", "fd_counter", pstate->fd_counter); |
39097daf MR |
769 | } |
770 | ||
771 | static gboolean write_persistent_state(const GAPersistentState *pstate, | |
772 | const gchar *path) | |
773 | { | |
774 | GKeyFile *keyfile = g_key_file_new(); | |
775 | GError *gerr = NULL; | |
776 | gboolean ret = true; | |
777 | gchar *data = NULL; | |
778 | gsize data_len; | |
779 | ||
780 | g_assert(pstate); | |
781 | ||
782 | persistent_state_to_keyfile(pstate, keyfile); | |
783 | data = g_key_file_to_data(keyfile, &data_len, &gerr); | |
784 | if (gerr) { | |
785 | g_critical("failed to convert persistent state to string: %s", | |
786 | gerr->message); | |
787 | ret = false; | |
788 | goto out; | |
789 | } | |
790 | ||
791 | g_file_set_contents(path, data, data_len, &gerr); | |
792 | if (gerr) { | |
793 | g_critical("failed to write persistent state to %s: %s", | |
794 | path, gerr->message); | |
795 | ret = false; | |
796 | goto out; | |
797 | } | |
798 | ||
799 | out: | |
800 | if (gerr) { | |
801 | g_error_free(gerr); | |
802 | } | |
803 | if (keyfile) { | |
804 | g_key_file_free(keyfile); | |
805 | } | |
806 | g_free(data); | |
807 | return ret; | |
808 | } | |
809 | ||
810 | static gboolean read_persistent_state(GAPersistentState *pstate, | |
811 | const gchar *path, gboolean frozen) | |
812 | { | |
813 | GKeyFile *keyfile = NULL; | |
814 | GError *gerr = NULL; | |
815 | struct stat st; | |
816 | gboolean ret = true; | |
817 | ||
818 | g_assert(pstate); | |
819 | ||
820 | if (stat(path, &st) == -1) { | |
821 | /* it's okay if state file doesn't exist, but any other error | |
822 | * indicates a permissions issue or some other misconfiguration | |
823 | * that we likely won't be able to recover from. | |
824 | */ | |
825 | if (errno != ENOENT) { | |
826 | g_critical("unable to access state file at path %s: %s", | |
827 | path, strerror(errno)); | |
828 | ret = false; | |
829 | goto out; | |
830 | } | |
831 | ||
832 | /* file doesn't exist. initialize state to default values and | |
833 | * attempt to save now. (we could wait till later when we have | |
834 | * modified state we need to commit, but if there's a problem, | |
835 | * such as a missing parent directory, we want to catch it now) | |
836 | * | |
837 | * there is a potential scenario where someone either managed to | |
838 | * update the agent from a version that didn't use a key store | |
839 | * while qemu-ga thought the filesystem was frozen, or | |
840 | * deleted the key store prior to issuing a fsfreeze, prior | |
841 | * to restarting the agent. in this case we go ahead and defer | |
842 | * initial creation till we actually have modified state to | |
843 | * write, otherwise fail to recover from freeze. | |
844 | */ | |
845 | set_persistent_state_defaults(pstate); | |
846 | if (!frozen) { | |
847 | ret = write_persistent_state(pstate, path); | |
848 | if (!ret) { | |
849 | g_critical("unable to create state file at path %s", path); | |
850 | ret = false; | |
851 | goto out; | |
852 | } | |
853 | } | |
854 | ret = true; | |
855 | goto out; | |
856 | } | |
857 | ||
858 | keyfile = g_key_file_new(); | |
859 | g_key_file_load_from_file(keyfile, path, 0, &gerr); | |
860 | if (gerr) { | |
861 | g_critical("error loading persistent state from path: %s, %s", | |
862 | path, gerr->message); | |
863 | ret = false; | |
864 | goto out; | |
865 | } | |
866 | ||
867 | persistent_state_from_keyfile(pstate, keyfile); | |
868 | ||
869 | out: | |
870 | if (keyfile) { | |
871 | g_key_file_free(keyfile); | |
872 | } | |
873 | if (gerr) { | |
874 | g_error_free(gerr); | |
875 | } | |
876 | ||
877 | return ret; | |
878 | } | |
879 | ||
880 | int64_t ga_get_fd_handle(GAState *s, Error **errp) | |
881 | { | |
882 | int64_t handle; | |
883 | ||
884 | g_assert(s->pstate_filepath); | |
885 | /* we blacklist commands and avoid operations that potentially require | |
886 | * writing to disk when we're in a frozen state. this includes opening | |
887 | * new files, so we should never get here in that situation | |
888 | */ | |
889 | g_assert(!ga_is_frozen(s)); | |
890 | ||
891 | handle = s->pstate.fd_counter++; | |
ce7f7cc2 LC |
892 | |
893 | /* This should never happen on a reasonable timeframe, as guest-file-open | |
894 | * would have to be issued 2^63 times */ | |
895 | if (s->pstate.fd_counter == INT64_MAX) { | |
896 | abort(); | |
39097daf | 897 | } |
ce7f7cc2 | 898 | |
39097daf MR |
899 | if (!write_persistent_state(&s->pstate, s->pstate_filepath)) { |
900 | error_setg(errp, "failed to commit persistent state to disk"); | |
901 | } | |
902 | ||
903 | return handle; | |
904 | } | |
905 | ||
48ff7a62 MR |
906 | int main(int argc, char **argv) |
907 | { | |
ec0f694c | 908 | const char *sopt = "hVvdm:p:l:f:F::b:s:t:"; |
f789aa7b MR |
909 | const char *method = NULL, *path = NULL; |
910 | const char *log_filepath = NULL; | |
911 | const char *pid_filepath = QGA_PIDFILE_DEFAULT; | |
ec0f694c TS |
912 | #ifdef CONFIG_FSFREEZE |
913 | const char *fsfreeze_hook = NULL; | |
914 | #endif | |
f789aa7b | 915 | const char *state_dir = QGA_STATEDIR_DEFAULT; |
bc62fa03 MR |
916 | #ifdef _WIN32 |
917 | const char *service = NULL; | |
918 | #endif | |
48ff7a62 MR |
919 | const struct option lopt[] = { |
920 | { "help", 0, NULL, 'h' }, | |
921 | { "version", 0, NULL, 'V' }, | |
bc62fa03 MR |
922 | { "logfile", 1, NULL, 'l' }, |
923 | { "pidfile", 1, NULL, 'f' }, | |
ec0f694c TS |
924 | #ifdef CONFIG_FSFREEZE |
925 | { "fsfreeze-hook", 2, NULL, 'F' }, | |
926 | #endif | |
48ff7a62 | 927 | { "verbose", 0, NULL, 'v' }, |
bc62fa03 MR |
928 | { "method", 1, NULL, 'm' }, |
929 | { "path", 1, NULL, 'p' }, | |
48ff7a62 | 930 | { "daemonize", 0, NULL, 'd' }, |
bc62fa03 MR |
931 | { "blacklist", 1, NULL, 'b' }, |
932 | #ifdef _WIN32 | |
933 | { "service", 1, NULL, 's' }, | |
f22d85e9 | 934 | #endif |
f789aa7b | 935 | { "statedir", 1, NULL, 't' }, |
48ff7a62 MR |
936 | { NULL, 0, NULL, 0 } |
937 | }; | |
abd6cf6d | 938 | int opt_ind = 0, ch, daemonize = 0, i, j, len; |
48ff7a62 | 939 | GLogLevelFlags log_level = G_LOG_LEVEL_ERROR | G_LOG_LEVEL_CRITICAL; |
f22d85e9 | 940 | GList *blacklist = NULL; |
48ff7a62 MR |
941 | GAState *s; |
942 | ||
abd6cf6d MR |
943 | module_call_init(MODULE_INIT_QAPI); |
944 | ||
48ff7a62 MR |
945 | while ((ch = getopt_long(argc, argv, sopt, lopt, &opt_ind)) != -1) { |
946 | switch (ch) { | |
947 | case 'm': | |
948 | method = optarg; | |
949 | break; | |
950 | case 'p': | |
951 | path = optarg; | |
952 | break; | |
953 | case 'l': | |
f789aa7b | 954 | log_filepath = optarg; |
48ff7a62 MR |
955 | break; |
956 | case 'f': | |
f789aa7b | 957 | pid_filepath = optarg; |
48ff7a62 | 958 | break; |
ec0f694c TS |
959 | #ifdef CONFIG_FSFREEZE |
960 | case 'F': | |
961 | fsfreeze_hook = optarg ? optarg : QGA_FSFREEZE_HOOK_DEFAULT; | |
962 | break; | |
963 | #endif | |
f789aa7b MR |
964 | case 't': |
965 | state_dir = optarg; | |
966 | break; | |
48ff7a62 MR |
967 | case 'v': |
968 | /* enable all log levels */ | |
969 | log_level = G_LOG_LEVEL_MASK; | |
970 | break; | |
971 | case 'V': | |
8efacc43 | 972 | printf("QEMU Guest Agent %s\n", QEMU_VERSION); |
48ff7a62 MR |
973 | return 0; |
974 | case 'd': | |
975 | daemonize = 1; | |
976 | break; | |
abd6cf6d MR |
977 | case 'b': { |
978 | char **list_head, **list; | |
c8057f95 | 979 | if (is_help_option(optarg)) { |
abd6cf6d MR |
980 | list_head = list = qmp_get_command_list(); |
981 | while (*list != NULL) { | |
982 | printf("%s\n", *list); | |
983 | g_free(*list); | |
984 | list++; | |
985 | } | |
986 | g_free(list_head); | |
987 | return 0; | |
988 | } | |
989 | for (j = 0, i = 0, len = strlen(optarg); i < len; i++) { | |
990 | if (optarg[i] == ',') { | |
991 | optarg[i] = 0; | |
f22d85e9 | 992 | blacklist = g_list_append(blacklist, &optarg[j]); |
abd6cf6d MR |
993 | j = i + 1; |
994 | } | |
995 | } | |
996 | if (j < i) { | |
f22d85e9 | 997 | blacklist = g_list_append(blacklist, &optarg[j]); |
abd6cf6d MR |
998 | } |
999 | break; | |
1000 | } | |
bc62fa03 MR |
1001 | #ifdef _WIN32 |
1002 | case 's': | |
1003 | service = optarg; | |
1004 | if (strcmp(service, "install") == 0) { | |
f789aa7b | 1005 | return ga_install_service(path, log_filepath); |
bc62fa03 MR |
1006 | } else if (strcmp(service, "uninstall") == 0) { |
1007 | return ga_uninstall_service(); | |
1008 | } else { | |
1009 | printf("Unknown service command.\n"); | |
1010 | return EXIT_FAILURE; | |
1011 | } | |
1012 | break; | |
1013 | #endif | |
48ff7a62 MR |
1014 | case 'h': |
1015 | usage(argv[0]); | |
1016 | return 0; | |
1017 | case '?': | |
1018 | g_print("Unknown option, try '%s --help' for more information.\n", | |
1019 | argv[0]); | |
1020 | return EXIT_FAILURE; | |
1021 | } | |
1022 | } | |
1023 | ||
7267c094 | 1024 | s = g_malloc0(sizeof(GAState)); |
48ff7a62 | 1025 | s->log_level = log_level; |
f789aa7b | 1026 | s->log_file = stderr; |
ec0f694c TS |
1027 | #ifdef CONFIG_FSFREEZE |
1028 | s->fsfreeze_hook = fsfreeze_hook; | |
1029 | #endif | |
48ff7a62 MR |
1030 | g_log_set_default_handler(ga_log, s); |
1031 | g_log_set_fatal_mask(NULL, G_LOG_LEVEL_ERROR); | |
f789aa7b MR |
1032 | ga_enable_logging(s); |
1033 | s->state_filepath_isfrozen = g_strdup_printf("%s/qga.state.isfrozen", | |
1034 | state_dir); | |
39097daf | 1035 | s->pstate_filepath = g_strdup_printf("%s/qga.state", state_dir); |
f22d85e9 | 1036 | s->frozen = false; |
39097daf | 1037 | |
f789aa7b MR |
1038 | #ifndef _WIN32 |
1039 | /* check if a previous instance of qemu-ga exited with filesystems' state | |
1040 | * marked as frozen. this could be a stale value (a non-qemu-ga process | |
1041 | * or reboot may have since unfrozen them), but better to require an | |
1042 | * uneeded unfreeze than to risk hanging on start-up | |
1043 | */ | |
1044 | struct stat st; | |
1045 | if (stat(s->state_filepath_isfrozen, &st) == -1) { | |
1046 | /* it's okay if the file doesn't exist, but if we can't access for | |
1047 | * some other reason, such as permissions, there's a configuration | |
1048 | * that needs to be addressed. so just bail now before we get into | |
1049 | * more trouble later | |
1050 | */ | |
1051 | if (errno != ENOENT) { | |
1052 | g_critical("unable to access state file at path %s: %s", | |
1053 | s->state_filepath_isfrozen, strerror(errno)); | |
1054 | return EXIT_FAILURE; | |
1055 | } | |
1056 | } else { | |
1057 | g_warning("previous instance appears to have exited with frozen" | |
1058 | " filesystems. deferring logging/pidfile creation and" | |
1059 | " disabling non-fsfreeze-safe commands until" | |
1060 | " guest-fsfreeze-thaw is issued, or filesystems are" | |
1061 | " manually unfrozen and the file %s is removed", | |
1062 | s->state_filepath_isfrozen); | |
1063 | s->frozen = true; | |
1064 | } | |
1065 | #endif | |
1066 | ||
1067 | if (ga_is_frozen(s)) { | |
1068 | if (daemonize) { | |
1069 | /* delay opening/locking of pidfile till filesystem are unfrozen */ | |
1070 | s->deferred_options.pid_filepath = pid_filepath; | |
1071 | become_daemon(NULL); | |
1072 | } | |
1073 | if (log_filepath) { | |
1074 | /* delay opening the log file till filesystems are unfrozen */ | |
1075 | s->deferred_options.log_filepath = log_filepath; | |
1076 | } | |
1077 | ga_disable_logging(s); | |
1078 | ga_disable_non_whitelisted(); | |
1079 | } else { | |
1080 | if (daemonize) { | |
1081 | become_daemon(pid_filepath); | |
1082 | } | |
1083 | if (log_filepath) { | |
9e92f6d4 | 1084 | FILE *log_file = ga_open_logfile(log_filepath); |
6c615ec5 | 1085 | if (!log_file) { |
f789aa7b MR |
1086 | g_critical("unable to open specified log file: %s", |
1087 | strerror(errno)); | |
1088 | goto out_bad; | |
1089 | } | |
6c615ec5 | 1090 | s->log_file = log_file; |
f789aa7b MR |
1091 | } |
1092 | } | |
1093 | ||
39097daf MR |
1094 | /* load persistent state from disk */ |
1095 | if (!read_persistent_state(&s->pstate, | |
1096 | s->pstate_filepath, | |
1097 | ga_is_frozen(s))) { | |
1098 | g_critical("failed to load persistent state"); | |
1099 | goto out_bad; | |
1100 | } | |
1101 | ||
f22d85e9 MR |
1102 | if (blacklist) { |
1103 | s->blacklist = blacklist; | |
1104 | do { | |
1105 | g_debug("disabling command: %s", (char *)blacklist->data); | |
1106 | qmp_disable_command(blacklist->data); | |
1107 | blacklist = g_list_next(blacklist); | |
1108 | } while (blacklist); | |
1109 | } | |
e3d4d252 MR |
1110 | s->command_state = ga_command_state_new(); |
1111 | ga_command_state_init(s, s->command_state); | |
1112 | ga_command_state_init_all(s->command_state); | |
125b310e | 1113 | json_message_parser_init(&s->parser, process_event); |
48ff7a62 | 1114 | ga_state = s; |
d8ca685a | 1115 | #ifndef _WIN32 |
125b310e MR |
1116 | if (!register_signal_handlers()) { |
1117 | g_critical("failed to register signal handlers"); | |
1118 | goto out_bad; | |
1119 | } | |
d8ca685a | 1120 | #endif |
48ff7a62 | 1121 | |
125b310e MR |
1122 | s->main_loop = g_main_loop_new(NULL, false); |
1123 | if (!channel_init(ga_state, method, path)) { | |
1124 | g_critical("failed to initialize guest agent channel"); | |
1125 | goto out_bad; | |
1126 | } | |
bc62fa03 | 1127 | #ifndef _WIN32 |
48ff7a62 | 1128 | g_main_loop_run(ga_state->main_loop); |
bc62fa03 MR |
1129 | #else |
1130 | if (daemonize) { | |
1131 | SERVICE_TABLE_ENTRY service_table[] = { | |
1132 | { (char *)QGA_SERVICE_NAME, service_main }, { NULL, NULL } }; | |
1133 | StartServiceCtrlDispatcher(service_table); | |
1134 | } else { | |
1135 | g_main_loop_run(ga_state->main_loop); | |
1136 | } | |
1137 | #endif | |
48ff7a62 | 1138 | |
e3d4d252 | 1139 | ga_command_state_cleanup_all(ga_state->command_state); |
125b310e | 1140 | ga_channel_free(ga_state->channel); |
48ff7a62 | 1141 | |
125b310e | 1142 | if (daemonize) { |
f789aa7b | 1143 | unlink(pid_filepath); |
125b310e | 1144 | } |
48ff7a62 | 1145 | return 0; |
125b310e MR |
1146 | |
1147 | out_bad: | |
1148 | if (daemonize) { | |
f789aa7b | 1149 | unlink(pid_filepath); |
125b310e MR |
1150 | } |
1151 | return EXIT_FAILURE; | |
48ff7a62 | 1152 | } |