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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 | */ | |
e688df6b | 13 | |
4459bf38 | 14 | #include "qemu/osdep.h" |
48ff7a62 | 15 | #include <getopt.h> |
39097daf | 16 | #include <glib/gstdio.h> |
d8ca685a | 17 | #ifndef _WIN32 |
48ff7a62 | 18 | #include <syslog.h> |
11d0f125 | 19 | #include <sys/wait.h> |
d8ca685a | 20 | #endif |
86cdf9ec | 21 | #include "qapi/qmp/json-parser.h" |
452fcdbc | 22 | #include "qapi/qmp/qdict.h" |
7b1b5d19 | 23 | #include "qapi/qmp/qjson.h" |
fc81fa1e | 24 | #include "qapi/qmp/qstring.h" |
dc03272d | 25 | #include "guest-agent-core.h" |
1de7afc9 | 26 | #include "qemu/module.h" |
eb815e24 | 27 | #include "qga-qapi-commands.h" |
7b1b5d19 | 28 | #include "qapi/qmp/qerror.h" |
e688df6b | 29 | #include "qapi/error.h" |
dc03272d | 30 | #include "channel.h" |
39097daf | 31 | #include "qemu/bswap.h" |
f348b6d1 | 32 | #include "qemu/help_option.h" |
26de2296 | 33 | #include "qemu/sockets.h" |
53fabd4b | 34 | #include "qemu/systemd.h" |
8f1c29af | 35 | #include "qemu-version.h" |
bc62fa03 | 36 | #ifdef _WIN32 |
b70d6afe | 37 | #include <dbt.h> |
bc62fa03 | 38 | #include "qga/service-win32.h" |
f311f2c2 | 39 | #include "qga/vss-win32.h" |
bc62fa03 | 40 | #endif |
ec0f694c TS |
41 | #ifdef __linux__ |
42 | #include <linux/fs.h> | |
43 | #ifdef FIFREEZE | |
44 | #define CONFIG_FSFREEZE | |
45 | #endif | |
46 | #endif | |
48ff7a62 | 47 | |
7868e26e | 48 | #ifndef _WIN32 |
48ff7a62 | 49 | #define QGA_VIRTIO_PATH_DEFAULT "/dev/virtio-ports/org.qemu.guest_agent.0" |
c394ecb7 | 50 | #define QGA_STATE_RELATIVE_DIR "run" |
a749f42d | 51 | #define QGA_SERIAL_PATH_DEFAULT "/dev/ttyS0" |
7868e26e MR |
52 | #else |
53 | #define QGA_VIRTIO_PATH_DEFAULT "\\\\.\\Global\\org.qemu.guest_agent.0" | |
c394ecb7 | 54 | #define QGA_STATE_RELATIVE_DIR "qemu-ga" |
a749f42d | 55 | #define QGA_SERIAL_PATH_DEFAULT "COM1" |
7868e26e | 56 | #endif |
ec0f694c TS |
57 | #ifdef CONFIG_FSFREEZE |
58 | #define QGA_FSFREEZE_HOOK_DEFAULT CONFIG_QEMU_CONFDIR "/fsfreeze-hook" | |
59 | #endif | |
3cf0bed8 | 60 | #define QGA_SENTINEL_BYTE 0xFF |
e236d060 | 61 | #define QGA_CONF_DEFAULT CONFIG_QEMU_CONFDIR G_DIR_SEPARATOR_S "qemu-ga.conf" |
d951fada | 62 | #define QGA_RETRY_INTERVAL 5 |
48ff7a62 | 63 | |
c394ecb7 LE |
64 | static struct { |
65 | const char *state_dir; | |
66 | const char *pidfile; | |
67 | } dfl_pathnames; | |
68 | ||
39097daf MR |
69 | typedef struct GAPersistentState { |
70 | #define QGA_PSTATE_DEFAULT_FD_COUNTER 1000 | |
71 | int64_t fd_counter; | |
72 | } GAPersistentState; | |
73 | ||
0f4d3a49 MR |
74 | typedef struct GAConfig GAConfig; |
75 | ||
48ff7a62 MR |
76 | struct GAState { |
77 | JSONMessageParser parser; | |
78 | GMainLoop *main_loop; | |
125b310e | 79 | GAChannel *channel; |
48ff7a62 MR |
80 | bool virtio; /* fastpath to check for virtio to deal with poll() quirks */ |
81 | GACommandState *command_state; | |
82 | GLogLevelFlags log_level; | |
83 | FILE *log_file; | |
84 | bool logging_enabled; | |
bc62fa03 MR |
85 | #ifdef _WIN32 |
86 | GAService service; | |
b70d6afe | 87 | HANDLE wakeup_event; |
bc62fa03 | 88 | #endif |
3cf0bed8 | 89 | bool delimit_response; |
f22d85e9 MR |
90 | bool frozen; |
91 | GList *blacklist; | |
d4c8a5d4 | 92 | char *state_filepath_isfrozen; |
f789aa7b MR |
93 | struct { |
94 | const char *log_filepath; | |
95 | const char *pid_filepath; | |
96 | } deferred_options; | |
ec0f694c TS |
97 | #ifdef CONFIG_FSFREEZE |
98 | const char *fsfreeze_hook; | |
99 | #endif | |
d4c8a5d4 | 100 | gchar *pstate_filepath; |
39097daf | 101 | GAPersistentState pstate; |
0f4d3a49 MR |
102 | GAConfig *config; |
103 | int socket_activation; | |
d951fada | 104 | bool force_exit; |
48ff7a62 MR |
105 | }; |
106 | ||
3cf0bed8 | 107 | struct GAState *ga_state; |
1527badb | 108 | QmpCommandList ga_commands; |
48ff7a62 | 109 | |
f22d85e9 MR |
110 | /* commands that are safe to issue while filesystems are frozen */ |
111 | static const char *ga_freeze_whitelist[] = { | |
112 | "guest-ping", | |
113 | "guest-info", | |
114 | "guest-sync", | |
c5dcb6ae | 115 | "guest-sync-delimited", |
f22d85e9 MR |
116 | "guest-fsfreeze-status", |
117 | "guest-fsfreeze-thaw", | |
118 | NULL | |
119 | }; | |
120 | ||
bc62fa03 MR |
121 | #ifdef _WIN32 |
122 | DWORD WINAPI service_ctrl_handler(DWORD ctrl, DWORD type, LPVOID data, | |
123 | LPVOID ctx); | |
b70d6afe | 124 | DWORD WINAPI handle_serial_device_events(DWORD type, LPVOID data); |
bc62fa03 MR |
125 | VOID WINAPI service_main(DWORD argc, TCHAR *argv[]); |
126 | #endif | |
d88495a8 | 127 | static int run_agent(GAState *s); |
d951fada | 128 | static void stop_agent(GAState *s, bool requested); |
bc62fa03 | 129 | |
c394ecb7 LE |
130 | static void |
131 | init_dfl_pathnames(void) | |
132 | { | |
133 | g_assert(dfl_pathnames.state_dir == NULL); | |
134 | g_assert(dfl_pathnames.pidfile == NULL); | |
135 | dfl_pathnames.state_dir = qemu_get_local_state_pathname( | |
136 | QGA_STATE_RELATIVE_DIR); | |
137 | dfl_pathnames.pidfile = qemu_get_local_state_pathname( | |
138 | QGA_STATE_RELATIVE_DIR G_DIR_SEPARATOR_S "qemu-ga.pid"); | |
139 | } | |
140 | ||
48ff7a62 MR |
141 | static void quit_handler(int sig) |
142 | { | |
f22d85e9 MR |
143 | /* if we're frozen, don't exit unless we're absolutely forced to, |
144 | * because it's basically impossible for graceful exit to complete | |
145 | * unless all log/pid files are on unfreezable filesystems. there's | |
146 | * also a very likely chance killing the agent before unfreezing | |
147 | * the filesystems is a mistake (or will be viewed as one later). | |
94d81ae8 SJ |
148 | * On Windows the freeze interval is limited to 10 seconds, so |
149 | * we should quit, but first we should wait for the timeout, thaw | |
150 | * the filesystem and quit. | |
f22d85e9 MR |
151 | */ |
152 | if (ga_is_frozen(ga_state)) { | |
94d81ae8 SJ |
153 | #ifdef _WIN32 |
154 | int i = 0; | |
155 | Error *err = NULL; | |
156 | HANDLE hEventTimeout; | |
157 | ||
158 | g_debug("Thawing filesystems before exiting"); | |
159 | ||
160 | hEventTimeout = OpenEvent(EVENT_ALL_ACCESS, FALSE, EVENT_NAME_TIMEOUT); | |
161 | if (hEventTimeout) { | |
162 | WaitForSingleObject(hEventTimeout, 0); | |
163 | CloseHandle(hEventTimeout); | |
164 | } | |
0692b03e | 165 | qga_vss_fsfreeze(&i, false, NULL, &err); |
94d81ae8 SJ |
166 | if (err) { |
167 | g_debug("Error unfreezing filesystems prior to exiting: %s", | |
168 | error_get_pretty(err)); | |
169 | error_free(err); | |
170 | } | |
171 | #else | |
f22d85e9 | 172 | return; |
94d81ae8 | 173 | #endif |
f22d85e9 | 174 | } |
2542bfd5 | 175 | g_debug("received signal num %d, quitting", sig); |
48ff7a62 | 176 | |
d951fada | 177 | stop_agent(ga_state, true); |
48ff7a62 MR |
178 | } |
179 | ||
bc62fa03 | 180 | #ifndef _WIN32 |
125b310e | 181 | static gboolean register_signal_handlers(void) |
48ff7a62 | 182 | { |
dc8764f0 | 183 | struct sigaction sigact; |
48ff7a62 MR |
184 | int ret; |
185 | ||
186 | memset(&sigact, 0, sizeof(struct sigaction)); | |
187 | sigact.sa_handler = quit_handler; | |
188 | ||
189 | ret = sigaction(SIGINT, &sigact, NULL); | |
190 | if (ret == -1) { | |
191 | g_error("error configuring signal handler: %s", strerror(errno)); | |
48ff7a62 MR |
192 | } |
193 | ret = sigaction(SIGTERM, &sigact, NULL); | |
194 | if (ret == -1) { | |
195 | g_error("error configuring signal handler: %s", strerror(errno)); | |
196 | } | |
11d0f125 | 197 | |
4005b473 DL |
198 | sigact.sa_handler = SIG_IGN; |
199 | if (sigaction(SIGPIPE, &sigact, NULL) != 0) { | |
200 | g_error("error configuring SIGPIPE signal handler: %s", | |
201 | strerror(errno)); | |
202 | } | |
203 | ||
125b310e | 204 | return true; |
48ff7a62 | 205 | } |
04b4e75f LC |
206 | |
207 | /* TODO: use this in place of all post-fork() fclose(std*) callers */ | |
208 | void reopen_fd_to_null(int fd) | |
209 | { | |
210 | int nullfd; | |
211 | ||
212 | nullfd = open("/dev/null", O_RDWR); | |
213 | if (nullfd < 0) { | |
214 | return; | |
215 | } | |
216 | ||
217 | dup2(nullfd, fd); | |
218 | ||
219 | if (nullfd != fd) { | |
220 | close(nullfd); | |
221 | } | |
222 | } | |
d8ca685a | 223 | #endif |
48ff7a62 MR |
224 | |
225 | static void usage(const char *cmd) | |
226 | { | |
227 | printf( | |
4bdd0416 | 228 | "Usage: %s [-m <method> -p <path>] [<options>]\n" |
7e563bfb | 229 | "QEMU Guest Agent " QEMU_FULL_VERSION "\n" |
8f1c29af | 230 | QEMU_COPYRIGHT "\n" |
48ff7a62 | 231 | "\n" |
586ef5de SH |
232 | " -m, --method transport method: one of unix-listen, virtio-serial,\n" |
233 | " isa-serial, or vsock-listen (virtio-serial is the default)\n" | |
4bdd0416 | 234 | " -p, --path device/socket path (the default for virtio-serial is:\n" |
a749f42d MM |
235 | " %s,\n" |
236 | " the default for isa-serial is:\n" | |
4bdd0416 | 237 | " %s)\n" |
48ff7a62 MR |
238 | " -l, --logfile set logfile path, logs to stderr by default\n" |
239 | " -f, --pidfile specify pidfile (default is %s)\n" | |
ec0f694c TS |
240 | #ifdef CONFIG_FSFREEZE |
241 | " -F, --fsfreeze-hook\n" | |
242 | " enable fsfreeze hook. Accepts an optional argument that\n" | |
243 | " specifies script to run on freeze/thaw. Script will be\n" | |
244 | " called with 'freeze'/'thaw' arguments accordingly.\n" | |
245 | " (default is %s)\n" | |
246 | " If using -F with an argument, do not follow -F with a\n" | |
247 | " space.\n" | |
248 | " (for example: -F/var/run/fsfreezehook.sh)\n" | |
249 | #endif | |
f789aa7b MR |
250 | " -t, --statedir specify dir to store state information (absolute paths\n" |
251 | " only, default is %s)\n" | |
48ff7a62 MR |
252 | " -v, --verbose log extra debugging information\n" |
253 | " -V, --version print version information and exit\n" | |
254 | " -d, --daemonize become a daemon\n" | |
bc62fa03 | 255 | #ifdef _WIN32 |
5e031072 | 256 | " -s, --service service commands: install, uninstall, vss-install, vss-uninstall\n" |
d8ca685a | 257 | #endif |
4bdd0416 | 258 | " -b, --blacklist comma-separated list of RPCs to disable (no spaces, \"?\"\n" |
abd6cf6d | 259 | " to list available RPCs)\n" |
aeadcbb6 MAL |
260 | " -D, --dump-conf dump a qemu-ga config file based on current config\n" |
261 | " options / command-line parameters to stdout\n" | |
d951fada MR |
262 | " -r, --retry-path attempt re-opening path if it's unavailable or closed\n" |
263 | " due to an error which may be recoverable in the future\n" | |
264 | " (virtio-serial driver re-install, serial device hot\n" | |
265 | " plug/unplug, etc.)\n" | |
48ff7a62 MR |
266 | " -h, --help display this help and exit\n" |
267 | "\n" | |
f5048cb7 | 268 | QEMU_HELP_BOTTOM "\n" |
8f1c29af | 269 | , cmd, QGA_VIRTIO_PATH_DEFAULT, QGA_SERIAL_PATH_DEFAULT, |
a749f42d | 270 | dfl_pathnames.pidfile, |
ec0f694c TS |
271 | #ifdef CONFIG_FSFREEZE |
272 | QGA_FSFREEZE_HOOK_DEFAULT, | |
273 | #endif | |
c394ecb7 | 274 | dfl_pathnames.state_dir); |
48ff7a62 MR |
275 | } |
276 | ||
48ff7a62 MR |
277 | static const char *ga_log_level_str(GLogLevelFlags level) |
278 | { | |
279 | switch (level & G_LOG_LEVEL_MASK) { | |
280 | case G_LOG_LEVEL_ERROR: | |
281 | return "error"; | |
282 | case G_LOG_LEVEL_CRITICAL: | |
283 | return "critical"; | |
284 | case G_LOG_LEVEL_WARNING: | |
285 | return "warning"; | |
286 | case G_LOG_LEVEL_MESSAGE: | |
287 | return "message"; | |
288 | case G_LOG_LEVEL_INFO: | |
289 | return "info"; | |
290 | case G_LOG_LEVEL_DEBUG: | |
291 | return "debug"; | |
292 | default: | |
293 | return "user"; | |
294 | } | |
295 | } | |
296 | ||
297 | bool ga_logging_enabled(GAState *s) | |
298 | { | |
299 | return s->logging_enabled; | |
300 | } | |
301 | ||
302 | void ga_disable_logging(GAState *s) | |
303 | { | |
304 | s->logging_enabled = false; | |
305 | } | |
306 | ||
307 | void ga_enable_logging(GAState *s) | |
308 | { | |
309 | s->logging_enabled = true; | |
310 | } | |
311 | ||
312 | static void ga_log(const gchar *domain, GLogLevelFlags level, | |
313 | const gchar *msg, gpointer opaque) | |
314 | { | |
315 | GAState *s = opaque; | |
316 | GTimeVal time; | |
317 | const char *level_str = ga_log_level_str(level); | |
318 | ||
319 | if (!ga_logging_enabled(s)) { | |
320 | return; | |
321 | } | |
322 | ||
323 | level &= G_LOG_LEVEL_MASK; | |
d8ca685a | 324 | #ifndef _WIN32 |
f300414c | 325 | if (g_strcmp0(domain, "syslog") == 0) { |
48ff7a62 MR |
326 | syslog(LOG_INFO, "%s: %s", level_str, msg); |
327 | } else if (level & s->log_level) { | |
d8ca685a MR |
328 | #else |
329 | if (level & s->log_level) { | |
330 | #endif | |
48ff7a62 MR |
331 | g_get_current_time(&time); |
332 | fprintf(s->log_file, | |
333 | "%lu.%lu: %s: %s\n", time.tv_sec, time.tv_usec, level_str, msg); | |
334 | fflush(s->log_file); | |
335 | } | |
336 | } | |
337 | ||
3cf0bed8 MR |
338 | void ga_set_response_delimited(GAState *s) |
339 | { | |
340 | s->delimit_response = true; | |
341 | } | |
342 | ||
9e92f6d4 LC |
343 | static FILE *ga_open_logfile(const char *logfile) |
344 | { | |
345 | FILE *f; | |
346 | ||
347 | f = fopen(logfile, "a"); | |
348 | if (!f) { | |
349 | return NULL; | |
350 | } | |
351 | ||
352 | qemu_set_cloexec(fileno(f)); | |
353 | return f; | |
354 | } | |
355 | ||
f22d85e9 MR |
356 | static gint ga_strcmp(gconstpointer str1, gconstpointer str2) |
357 | { | |
358 | return strcmp(str1, str2); | |
359 | } | |
360 | ||
361 | /* disable commands that aren't safe for fsfreeze */ | |
8dc4d915 | 362 | static void ga_disable_non_whitelisted(QmpCommand *cmd, void *opaque) |
f22d85e9 | 363 | { |
8dc4d915 MW |
364 | bool whitelisted = false; |
365 | int i = 0; | |
366 | const char *name = qmp_command_name(cmd); | |
367 | ||
368 | while (ga_freeze_whitelist[i] != NULL) { | |
369 | if (strcmp(name, ga_freeze_whitelist[i]) == 0) { | |
370 | whitelisted = true; | |
f22d85e9 | 371 | } |
8dc4d915 MW |
372 | i++; |
373 | } | |
374 | if (!whitelisted) { | |
375 | g_debug("disabling command: %s", name); | |
1527badb | 376 | qmp_disable_command(&ga_commands, name); |
f22d85e9 | 377 | } |
f22d85e9 MR |
378 | } |
379 | ||
a31f0531 | 380 | /* [re-]enable all commands, except those explicitly blacklisted by user */ |
8dc4d915 | 381 | static void ga_enable_non_blacklisted(QmpCommand *cmd, void *opaque) |
f22d85e9 | 382 | { |
8dc4d915 MW |
383 | GList *blacklist = opaque; |
384 | const char *name = qmp_command_name(cmd); | |
385 | ||
386 | if (g_list_find_custom(blacklist, name, ga_strcmp) == NULL && | |
387 | !qmp_command_is_enabled(cmd)) { | |
388 | g_debug("enabling command: %s", name); | |
1527badb | 389 | qmp_enable_command(&ga_commands, name); |
f22d85e9 | 390 | } |
f22d85e9 MR |
391 | } |
392 | ||
f789aa7b MR |
393 | static bool ga_create_file(const char *path) |
394 | { | |
395 | int fd = open(path, O_CREAT | O_WRONLY, S_IWUSR | S_IRUSR); | |
396 | if (fd == -1) { | |
397 | g_warning("unable to open/create file %s: %s", path, strerror(errno)); | |
398 | return false; | |
399 | } | |
400 | close(fd); | |
401 | return true; | |
402 | } | |
403 | ||
404 | static bool ga_delete_file(const char *path) | |
405 | { | |
406 | int ret = unlink(path); | |
407 | if (ret == -1) { | |
408 | g_warning("unable to delete file: %s: %s", path, strerror(errno)); | |
409 | return false; | |
410 | } | |
411 | ||
412 | return true; | |
413 | } | |
414 | ||
f22d85e9 MR |
415 | bool ga_is_frozen(GAState *s) |
416 | { | |
417 | return s->frozen; | |
418 | } | |
419 | ||
420 | void ga_set_frozen(GAState *s) | |
421 | { | |
422 | if (ga_is_frozen(s)) { | |
423 | return; | |
424 | } | |
425 | /* disable all non-whitelisted (for frozen state) commands */ | |
1527badb | 426 | qmp_for_each_command(&ga_commands, ga_disable_non_whitelisted, NULL); |
f22d85e9 MR |
427 | g_warning("disabling logging due to filesystem freeze"); |
428 | ga_disable_logging(s); | |
429 | s->frozen = true; | |
f789aa7b MR |
430 | if (!ga_create_file(s->state_filepath_isfrozen)) { |
431 | g_warning("unable to create %s, fsfreeze may not function properly", | |
432 | s->state_filepath_isfrozen); | |
433 | } | |
f22d85e9 MR |
434 | } |
435 | ||
436 | void ga_unset_frozen(GAState *s) | |
437 | { | |
438 | if (!ga_is_frozen(s)) { | |
439 | return; | |
440 | } | |
441 | ||
f789aa7b MR |
442 | /* if we delayed creation/opening of pid/log files due to being |
443 | * in a frozen state at start up, do it now | |
444 | */ | |
445 | if (s->deferred_options.log_filepath) { | |
9e92f6d4 | 446 | s->log_file = ga_open_logfile(s->deferred_options.log_filepath); |
f789aa7b MR |
447 | if (!s->log_file) { |
448 | s->log_file = stderr; | |
449 | } | |
450 | s->deferred_options.log_filepath = NULL; | |
451 | } | |
f22d85e9 | 452 | ga_enable_logging(s); |
f789aa7b MR |
453 | g_warning("logging re-enabled due to filesystem unfreeze"); |
454 | if (s->deferred_options.pid_filepath) { | |
9e6bdef2 MAL |
455 | Error *err = NULL; |
456 | ||
457 | if (!qemu_write_pidfile(s->deferred_options.pid_filepath, &err)) { | |
458 | g_warning("%s", error_get_pretty(err)); | |
459 | error_free(err); | |
f789aa7b MR |
460 | } |
461 | s->deferred_options.pid_filepath = NULL; | |
462 | } | |
f22d85e9 MR |
463 | |
464 | /* enable all disabled, non-blacklisted commands */ | |
1527badb | 465 | qmp_for_each_command(&ga_commands, ga_enable_non_blacklisted, s->blacklist); |
f22d85e9 | 466 | s->frozen = false; |
f789aa7b MR |
467 | if (!ga_delete_file(s->state_filepath_isfrozen)) { |
468 | g_warning("unable to delete %s, fsfreeze may not function properly", | |
469 | s->state_filepath_isfrozen); | |
470 | } | |
f22d85e9 MR |
471 | } |
472 | ||
ec0f694c TS |
473 | #ifdef CONFIG_FSFREEZE |
474 | const char *ga_fsfreeze_hook(GAState *s) | |
475 | { | |
476 | return s->fsfreeze_hook; | |
477 | } | |
478 | #endif | |
479 | ||
48ff7a62 MR |
480 | static void become_daemon(const char *pidfile) |
481 | { | |
f789aa7b | 482 | #ifndef _WIN32 |
48ff7a62 | 483 | pid_t pid, sid; |
48ff7a62 MR |
484 | |
485 | pid = fork(); | |
486 | if (pid < 0) { | |
487 | exit(EXIT_FAILURE); | |
488 | } | |
489 | if (pid > 0) { | |
490 | exit(EXIT_SUCCESS); | |
491 | } | |
492 | ||
f789aa7b | 493 | if (pidfile) { |
9e6bdef2 MAL |
494 | Error *err = NULL; |
495 | ||
496 | if (!qemu_write_pidfile(pidfile, &err)) { | |
497 | g_critical("%s", error_get_pretty(err)); | |
498 | error_free(err); | |
f789aa7b MR |
499 | exit(EXIT_FAILURE); |
500 | } | |
48ff7a62 MR |
501 | } |
502 | ||
c689b4f1 | 503 | umask(S_IRWXG | S_IRWXO); |
48ff7a62 MR |
504 | sid = setsid(); |
505 | if (sid < 0) { | |
506 | goto fail; | |
507 | } | |
508 | if ((chdir("/")) < 0) { | |
509 | goto fail; | |
510 | } | |
511 | ||
226a4894 LC |
512 | reopen_fd_to_null(STDIN_FILENO); |
513 | reopen_fd_to_null(STDOUT_FILENO); | |
514 | reopen_fd_to_null(STDERR_FILENO); | |
48ff7a62 MR |
515 | return; |
516 | ||
517 | fail: | |
4bdb1a30 SW |
518 | if (pidfile) { |
519 | unlink(pidfile); | |
520 | } | |
48ff7a62 MR |
521 | g_critical("failed to daemonize"); |
522 | exit(EXIT_FAILURE); | |
d8ca685a | 523 | #endif |
f789aa7b | 524 | } |
48ff7a62 | 525 | |
d43b1694 | 526 | static int send_response(GAState *s, QDict *payload) |
48ff7a62 | 527 | { |
48ff7a62 | 528 | const char *buf; |
3cf0bed8 | 529 | QString *payload_qstr, *response_qstr; |
125b310e | 530 | GIOStatus status; |
48ff7a62 | 531 | |
125b310e | 532 | g_assert(payload && s->channel); |
48ff7a62 | 533 | |
d43b1694 | 534 | payload_qstr = qobject_to_json(QOBJECT(payload)); |
48ff7a62 MR |
535 | if (!payload_qstr) { |
536 | return -EINVAL; | |
537 | } | |
538 | ||
3cf0bed8 MR |
539 | if (s->delimit_response) { |
540 | s->delimit_response = false; | |
541 | response_qstr = qstring_new(); | |
542 | qstring_append_chr(response_qstr, QGA_SENTINEL_BYTE); | |
543 | qstring_append(response_qstr, qstring_get_str(payload_qstr)); | |
cb3e7f08 | 544 | qobject_unref(payload_qstr); |
3cf0bed8 MR |
545 | } else { |
546 | response_qstr = payload_qstr; | |
547 | } | |
548 | ||
549 | qstring_append_chr(response_qstr, '\n'); | |
550 | buf = qstring_get_str(response_qstr); | |
125b310e | 551 | status = ga_channel_write_all(s->channel, buf, strlen(buf)); |
cb3e7f08 | 552 | qobject_unref(response_qstr); |
125b310e MR |
553 | if (status != G_IO_STATUS_NORMAL) { |
554 | return -EIO; | |
48ff7a62 | 555 | } |
125b310e MR |
556 | |
557 | return 0; | |
48ff7a62 MR |
558 | } |
559 | ||
560 | static void process_command(GAState *s, QDict *req) | |
561 | { | |
d43b1694 | 562 | QDict *rsp; |
48ff7a62 MR |
563 | int ret; |
564 | ||
565 | g_assert(req); | |
566 | g_debug("processing command"); | |
674ed722 | 567 | rsp = qmp_dispatch(&ga_commands, QOBJECT(req), false); |
48ff7a62 | 568 | if (rsp) { |
125b310e | 569 | ret = send_response(s, rsp); |
47b0c3f2 PB |
570 | if (ret < 0) { |
571 | g_warning("error sending response: %s", strerror(-ret)); | |
48ff7a62 | 572 | } |
cb3e7f08 | 573 | qobject_unref(rsp); |
48ff7a62 MR |
574 | } |
575 | } | |
576 | ||
577 | /* handle requests/control events coming in over the channel */ | |
62815d85 | 578 | static void process_event(void *opaque, QObject *obj, Error *err) |
48ff7a62 | 579 | { |
62815d85 | 580 | GAState *s = opaque; |
ae7da1e5 | 581 | QDict *req, *rsp; |
48ff7a62 MR |
582 | int ret; |
583 | ||
48ff7a62 | 584 | g_debug("process_event: called"); |
84a56f38 | 585 | assert(!obj != !err); |
ae7da1e5 MAL |
586 | if (err) { |
587 | goto err; | |
48ff7a62 | 588 | } |
ae7da1e5 MAL |
589 | req = qobject_to(QDict, obj); |
590 | if (!req) { | |
84a56f38 | 591 | error_setg(&err, "Input must be a JSON object"); |
ae7da1e5 MAL |
592 | goto err; |
593 | } | |
594 | if (!qdict_haskey(req, "execute")) { | |
595 | g_warning("unrecognized payload format"); | |
596 | error_setg(&err, QERR_UNSUPPORTED); | |
597 | goto err; | |
48ff7a62 MR |
598 | } |
599 | ||
ae7da1e5 MAL |
600 | process_command(s, req); |
601 | qobject_unref(obj); | |
602 | return; | |
603 | ||
604 | err: | |
605 | g_warning("failed to parse event: %s", error_get_pretty(err)); | |
606 | rsp = qmp_error_response(err); | |
607 | ret = send_response(s, rsp); | |
608 | if (ret < 0) { | |
609 | g_warning("error sending error response: %s", strerror(-ret)); | |
610 | } | |
611 | qobject_unref(rsp); | |
612 | qobject_unref(obj); | |
48ff7a62 MR |
613 | } |
614 | ||
125b310e MR |
615 | /* false return signals GAChannel to close the current client connection */ |
616 | static gboolean channel_event_cb(GIOCondition condition, gpointer data) | |
48ff7a62 MR |
617 | { |
618 | GAState *s = data; | |
125b310e | 619 | gchar buf[QGA_READ_COUNT_DEFAULT+1]; |
48ff7a62 | 620 | gsize count; |
125b310e | 621 | GIOStatus status = ga_channel_read(s->channel, buf, QGA_READ_COUNT_DEFAULT, &count); |
48ff7a62 MR |
622 | switch (status) { |
623 | case G_IO_STATUS_ERROR: | |
125b310e | 624 | g_warning("error reading channel"); |
d951fada | 625 | stop_agent(s, false); |
48ff7a62 MR |
626 | return false; |
627 | case G_IO_STATUS_NORMAL: | |
125b310e | 628 | buf[count] = 0; |
48ff7a62 MR |
629 | g_debug("read data, count: %d, data: %s", (int)count, buf); |
630 | json_message_parser_feed(&s->parser, (char *)buf, (int)count); | |
125b310e MR |
631 | break; |
632 | case G_IO_STATUS_EOF: | |
633 | g_debug("received EOF"); | |
634 | if (!s->virtio) { | |
635 | return false; | |
636 | } | |
f5b79578 | 637 | /* fall through */ |
48ff7a62 MR |
638 | case G_IO_STATUS_AGAIN: |
639 | /* virtio causes us to spin here when no process is attached to | |
640 | * host-side chardev. sleep a bit to mitigate this | |
641 | */ | |
642 | if (s->virtio) { | |
643 | usleep(100*1000); | |
644 | } | |
645 | return true; | |
48ff7a62 MR |
646 | default: |
647 | g_warning("unknown channel read status, closing"); | |
48ff7a62 MR |
648 | return false; |
649 | } | |
650 | return true; | |
651 | } | |
652 | ||
26de2296 SH |
653 | static gboolean channel_init(GAState *s, const gchar *method, const gchar *path, |
654 | int listen_fd) | |
48ff7a62 | 655 | { |
125b310e | 656 | GAChannelMethod channel_method; |
48ff7a62 | 657 | |
125b310e MR |
658 | if (strcmp(method, "virtio-serial") == 0) { |
659 | s->virtio = true; /* virtio requires special handling in some cases */ | |
660 | channel_method = GA_CHANNEL_VIRTIO_SERIAL; | |
661 | } else if (strcmp(method, "isa-serial") == 0) { | |
662 | channel_method = GA_CHANNEL_ISA_SERIAL; | |
663 | } else if (strcmp(method, "unix-listen") == 0) { | |
664 | channel_method = GA_CHANNEL_UNIX_LISTEN; | |
586ef5de SH |
665 | } else if (strcmp(method, "vsock-listen") == 0) { |
666 | channel_method = GA_CHANNEL_VSOCK_LISTEN; | |
48ff7a62 | 667 | } else { |
125b310e MR |
668 | g_critical("unsupported channel method/type: %s", method); |
669 | return false; | |
48ff7a62 MR |
670 | } |
671 | ||
26de2296 SH |
672 | s->channel = ga_channel_new(channel_method, path, listen_fd, |
673 | channel_event_cb, s); | |
125b310e MR |
674 | if (!s->channel) { |
675 | g_critical("failed to create guest agent channel"); | |
676 | return false; | |
677 | } | |
678 | ||
679 | return true; | |
48ff7a62 MR |
680 | } |
681 | ||
bc62fa03 | 682 | #ifdef _WIN32 |
b70d6afe BA |
683 | DWORD WINAPI handle_serial_device_events(DWORD type, LPVOID data) |
684 | { | |
685 | DWORD ret = NO_ERROR; | |
686 | PDEV_BROADCAST_HDR broadcast_header = (PDEV_BROADCAST_HDR)data; | |
687 | ||
688 | if (broadcast_header->dbch_devicetype == DBT_DEVTYP_DEVICEINTERFACE) { | |
689 | switch (type) { | |
690 | /* Device inserted */ | |
691 | case DBT_DEVICEARRIVAL: | |
692 | /* Start QEMU-ga's service */ | |
693 | if (!SetEvent(ga_state->wakeup_event)) { | |
694 | ret = GetLastError(); | |
695 | } | |
696 | break; | |
697 | /* Device removed */ | |
698 | case DBT_DEVICEQUERYREMOVE: | |
699 | case DBT_DEVICEREMOVEPENDING: | |
700 | case DBT_DEVICEREMOVECOMPLETE: | |
701 | /* Stop QEMU-ga's service */ | |
702 | if (!ResetEvent(ga_state->wakeup_event)) { | |
703 | ret = GetLastError(); | |
704 | } | |
705 | break; | |
706 | default: | |
707 | ret = ERROR_CALL_NOT_IMPLEMENTED; | |
708 | } | |
709 | } | |
710 | return ret; | |
711 | } | |
712 | ||
bc62fa03 MR |
713 | DWORD WINAPI service_ctrl_handler(DWORD ctrl, DWORD type, LPVOID data, |
714 | LPVOID ctx) | |
715 | { | |
716 | DWORD ret = NO_ERROR; | |
717 | GAService *service = &ga_state->service; | |
718 | ||
719 | switch (ctrl) | |
720 | { | |
721 | case SERVICE_CONTROL_STOP: | |
722 | case SERVICE_CONTROL_SHUTDOWN: | |
723 | quit_handler(SIGTERM); | |
b70d6afe | 724 | SetEvent(ga_state->wakeup_event); |
bc62fa03 MR |
725 | service->status.dwCurrentState = SERVICE_STOP_PENDING; |
726 | SetServiceStatus(service->status_handle, &service->status); | |
727 | break; | |
b70d6afe BA |
728 | case SERVICE_CONTROL_DEVICEEVENT: |
729 | handle_serial_device_events(type, data); | |
730 | break; | |
bc62fa03 MR |
731 | |
732 | default: | |
733 | ret = ERROR_CALL_NOT_IMPLEMENTED; | |
734 | } | |
735 | return ret; | |
736 | } | |
737 | ||
738 | VOID WINAPI service_main(DWORD argc, TCHAR *argv[]) | |
739 | { | |
740 | GAService *service = &ga_state->service; | |
741 | ||
742 | service->status_handle = RegisterServiceCtrlHandlerEx(QGA_SERVICE_NAME, | |
743 | service_ctrl_handler, NULL); | |
744 | ||
745 | if (service->status_handle == 0) { | |
746 | g_critical("Failed to register extended requests function!\n"); | |
747 | return; | |
748 | } | |
749 | ||
750 | service->status.dwServiceType = SERVICE_WIN32; | |
751 | service->status.dwCurrentState = SERVICE_RUNNING; | |
752 | service->status.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN; | |
753 | service->status.dwWin32ExitCode = NO_ERROR; | |
754 | service->status.dwServiceSpecificExitCode = NO_ERROR; | |
755 | service->status.dwCheckPoint = 0; | |
756 | service->status.dwWaitHint = 0; | |
b70d6afe BA |
757 | DEV_BROADCAST_DEVICEINTERFACE notification_filter; |
758 | ZeroMemory(¬ification_filter, sizeof(notification_filter)); | |
759 | notification_filter.dbcc_devicetype = DBT_DEVTYP_DEVICEINTERFACE; | |
760 | notification_filter.dbcc_size = sizeof(DEV_BROADCAST_DEVICEINTERFACE); | |
761 | notification_filter.dbcc_classguid = GUID_VIOSERIAL_PORT; | |
762 | ||
763 | service->device_notification_handle = | |
764 | RegisterDeviceNotification(service->status_handle, | |
765 | ¬ification_filter, DEVICE_NOTIFY_SERVICE_HANDLE); | |
766 | if (!service->device_notification_handle) { | |
767 | g_critical("Failed to register device notification handle!\n"); | |
768 | return; | |
769 | } | |
bc62fa03 MR |
770 | SetServiceStatus(service->status_handle, &service->status); |
771 | ||
d88495a8 | 772 | run_agent(ga_state); |
bc62fa03 | 773 | |
b70d6afe | 774 | UnregisterDeviceNotification(service->device_notification_handle); |
bc62fa03 MR |
775 | service->status.dwCurrentState = SERVICE_STOPPED; |
776 | SetServiceStatus(service->status_handle, &service->status); | |
777 | } | |
778 | #endif | |
779 | ||
39097daf MR |
780 | static void set_persistent_state_defaults(GAPersistentState *pstate) |
781 | { | |
782 | g_assert(pstate); | |
783 | pstate->fd_counter = QGA_PSTATE_DEFAULT_FD_COUNTER; | |
784 | } | |
785 | ||
786 | static void persistent_state_from_keyfile(GAPersistentState *pstate, | |
787 | GKeyFile *keyfile) | |
788 | { | |
789 | g_assert(pstate); | |
790 | g_assert(keyfile); | |
791 | /* if any fields are missing, either because the file was tampered with | |
792 | * by agents of chaos, or because the field wasn't present at the time the | |
793 | * file was created, the best we can ever do is start over with the default | |
794 | * values. so load them now, and ignore any errors in accessing key-value | |
795 | * pairs | |
796 | */ | |
797 | set_persistent_state_defaults(pstate); | |
798 | ||
799 | if (g_key_file_has_key(keyfile, "global", "fd_counter", NULL)) { | |
800 | pstate->fd_counter = | |
4f306496 | 801 | g_key_file_get_integer(keyfile, "global", "fd_counter", NULL); |
39097daf MR |
802 | } |
803 | } | |
804 | ||
805 | static void persistent_state_to_keyfile(const GAPersistentState *pstate, | |
806 | GKeyFile *keyfile) | |
807 | { | |
808 | g_assert(pstate); | |
809 | g_assert(keyfile); | |
810 | ||
4f306496 | 811 | g_key_file_set_integer(keyfile, "global", "fd_counter", pstate->fd_counter); |
39097daf MR |
812 | } |
813 | ||
814 | static gboolean write_persistent_state(const GAPersistentState *pstate, | |
815 | const gchar *path) | |
816 | { | |
817 | GKeyFile *keyfile = g_key_file_new(); | |
818 | GError *gerr = NULL; | |
819 | gboolean ret = true; | |
820 | gchar *data = NULL; | |
821 | gsize data_len; | |
822 | ||
823 | g_assert(pstate); | |
824 | ||
825 | persistent_state_to_keyfile(pstate, keyfile); | |
826 | data = g_key_file_to_data(keyfile, &data_len, &gerr); | |
827 | if (gerr) { | |
828 | g_critical("failed to convert persistent state to string: %s", | |
829 | gerr->message); | |
830 | ret = false; | |
831 | goto out; | |
832 | } | |
833 | ||
834 | g_file_set_contents(path, data, data_len, &gerr); | |
835 | if (gerr) { | |
836 | g_critical("failed to write persistent state to %s: %s", | |
837 | path, gerr->message); | |
838 | ret = false; | |
839 | goto out; | |
840 | } | |
841 | ||
842 | out: | |
843 | if (gerr) { | |
844 | g_error_free(gerr); | |
845 | } | |
846 | if (keyfile) { | |
847 | g_key_file_free(keyfile); | |
848 | } | |
849 | g_free(data); | |
850 | return ret; | |
851 | } | |
852 | ||
853 | static gboolean read_persistent_state(GAPersistentState *pstate, | |
854 | const gchar *path, gboolean frozen) | |
855 | { | |
856 | GKeyFile *keyfile = NULL; | |
857 | GError *gerr = NULL; | |
858 | struct stat st; | |
859 | gboolean ret = true; | |
860 | ||
861 | g_assert(pstate); | |
862 | ||
863 | if (stat(path, &st) == -1) { | |
864 | /* it's okay if state file doesn't exist, but any other error | |
865 | * indicates a permissions issue or some other misconfiguration | |
866 | * that we likely won't be able to recover from. | |
867 | */ | |
868 | if (errno != ENOENT) { | |
869 | g_critical("unable to access state file at path %s: %s", | |
870 | path, strerror(errno)); | |
871 | ret = false; | |
872 | goto out; | |
873 | } | |
874 | ||
875 | /* file doesn't exist. initialize state to default values and | |
876 | * attempt to save now. (we could wait till later when we have | |
877 | * modified state we need to commit, but if there's a problem, | |
878 | * such as a missing parent directory, we want to catch it now) | |
879 | * | |
880 | * there is a potential scenario where someone either managed to | |
881 | * update the agent from a version that didn't use a key store | |
882 | * while qemu-ga thought the filesystem was frozen, or | |
883 | * deleted the key store prior to issuing a fsfreeze, prior | |
884 | * to restarting the agent. in this case we go ahead and defer | |
885 | * initial creation till we actually have modified state to | |
886 | * write, otherwise fail to recover from freeze. | |
887 | */ | |
888 | set_persistent_state_defaults(pstate); | |
889 | if (!frozen) { | |
890 | ret = write_persistent_state(pstate, path); | |
891 | if (!ret) { | |
892 | g_critical("unable to create state file at path %s", path); | |
893 | ret = false; | |
894 | goto out; | |
895 | } | |
896 | } | |
897 | ret = true; | |
898 | goto out; | |
899 | } | |
900 | ||
901 | keyfile = g_key_file_new(); | |
902 | g_key_file_load_from_file(keyfile, path, 0, &gerr); | |
903 | if (gerr) { | |
904 | g_critical("error loading persistent state from path: %s, %s", | |
905 | path, gerr->message); | |
906 | ret = false; | |
907 | goto out; | |
908 | } | |
909 | ||
910 | persistent_state_from_keyfile(pstate, keyfile); | |
911 | ||
912 | out: | |
913 | if (keyfile) { | |
914 | g_key_file_free(keyfile); | |
915 | } | |
916 | if (gerr) { | |
917 | g_error_free(gerr); | |
918 | } | |
919 | ||
920 | return ret; | |
921 | } | |
922 | ||
923 | int64_t ga_get_fd_handle(GAState *s, Error **errp) | |
924 | { | |
925 | int64_t handle; | |
926 | ||
927 | g_assert(s->pstate_filepath); | |
928 | /* we blacklist commands and avoid operations that potentially require | |
929 | * writing to disk when we're in a frozen state. this includes opening | |
930 | * new files, so we should never get here in that situation | |
931 | */ | |
932 | g_assert(!ga_is_frozen(s)); | |
933 | ||
934 | handle = s->pstate.fd_counter++; | |
ce7f7cc2 LC |
935 | |
936 | /* This should never happen on a reasonable timeframe, as guest-file-open | |
937 | * would have to be issued 2^63 times */ | |
938 | if (s->pstate.fd_counter == INT64_MAX) { | |
939 | abort(); | |
39097daf | 940 | } |
ce7f7cc2 | 941 | |
39097daf MR |
942 | if (!write_persistent_state(&s->pstate, s->pstate_filepath)) { |
943 | error_setg(errp, "failed to commit persistent state to disk"); | |
a903f40c | 944 | return -1; |
39097daf MR |
945 | } |
946 | ||
947 | return handle; | |
948 | } | |
949 | ||
8dc4d915 MW |
950 | static void ga_print_cmd(QmpCommand *cmd, void *opaque) |
951 | { | |
952 | printf("%s\n", qmp_command_name(cmd)); | |
953 | } | |
954 | ||
4bca81ce | 955 | static GList *split_list(const gchar *str, const gchar *delim) |
23b42894 MAL |
956 | { |
957 | GList *list = NULL; | |
4bca81ce MAL |
958 | int i; |
959 | gchar **strv; | |
23b42894 | 960 | |
4bca81ce MAL |
961 | strv = g_strsplit(str, delim, -1); |
962 | for (i = 0; strv[i]; i++) { | |
963 | list = g_list_prepend(list, strv[i]); | |
23b42894 | 964 | } |
4bca81ce | 965 | g_free(strv); |
23b42894 MAL |
966 | |
967 | return list; | |
968 | } | |
969 | ||
0f4d3a49 | 970 | struct GAConfig { |
7a406694 MAL |
971 | char *channel_path; |
972 | char *method; | |
973 | char *log_filepath; | |
974 | char *pid_filepath; | |
ec0f694c | 975 | #ifdef CONFIG_FSFREEZE |
7a406694 | 976 | char *fsfreeze_hook; |
ec0f694c | 977 | #endif |
7a406694 | 978 | char *state_dir; |
bc62fa03 | 979 | #ifdef _WIN32 |
7a406694 | 980 | const char *service; |
bc62fa03 | 981 | #endif |
e236d060 | 982 | gchar *bliststr; /* blacklist may point to this string */ |
7a406694 MAL |
983 | GList *blacklist; |
984 | int daemonize; | |
985 | GLogLevelFlags log_level; | |
aeadcbb6 | 986 | int dumpconf; |
d951fada | 987 | bool retry_path; |
0f4d3a49 | 988 | }; |
7a406694 | 989 | |
e236d060 MAL |
990 | static void config_load(GAConfig *config) |
991 | { | |
992 | GError *gerr = NULL; | |
993 | GKeyFile *keyfile; | |
8e34bf36 | 994 | const char *conf = g_getenv("QGA_CONF") ?: QGA_CONF_DEFAULT; |
e236d060 MAL |
995 | |
996 | /* read system config */ | |
997 | keyfile = g_key_file_new(); | |
8e34bf36 | 998 | if (!g_key_file_load_from_file(keyfile, conf, 0, &gerr)) { |
e236d060 MAL |
999 | goto end; |
1000 | } | |
1001 | if (g_key_file_has_key(keyfile, "general", "daemon", NULL)) { | |
1002 | config->daemonize = | |
1003 | g_key_file_get_boolean(keyfile, "general", "daemon", &gerr); | |
1004 | } | |
1005 | if (g_key_file_has_key(keyfile, "general", "method", NULL)) { | |
1006 | config->method = | |
1007 | g_key_file_get_string(keyfile, "general", "method", &gerr); | |
1008 | } | |
1009 | if (g_key_file_has_key(keyfile, "general", "path", NULL)) { | |
1010 | config->channel_path = | |
1011 | g_key_file_get_string(keyfile, "general", "path", &gerr); | |
1012 | } | |
1013 | if (g_key_file_has_key(keyfile, "general", "logfile", NULL)) { | |
1014 | config->log_filepath = | |
1015 | g_key_file_get_string(keyfile, "general", "logfile", &gerr); | |
1016 | } | |
1017 | if (g_key_file_has_key(keyfile, "general", "pidfile", NULL)) { | |
1018 | config->pid_filepath = | |
1019 | g_key_file_get_string(keyfile, "general", "pidfile", &gerr); | |
1020 | } | |
1021 | #ifdef CONFIG_FSFREEZE | |
1022 | if (g_key_file_has_key(keyfile, "general", "fsfreeze-hook", NULL)) { | |
1023 | config->fsfreeze_hook = | |
1024 | g_key_file_get_string(keyfile, | |
1025 | "general", "fsfreeze-hook", &gerr); | |
1026 | } | |
1027 | #endif | |
1028 | if (g_key_file_has_key(keyfile, "general", "statedir", NULL)) { | |
1029 | config->state_dir = | |
1030 | g_key_file_get_string(keyfile, "general", "statedir", &gerr); | |
1031 | } | |
1032 | if (g_key_file_has_key(keyfile, "general", "verbose", NULL) && | |
1033 | g_key_file_get_boolean(keyfile, "general", "verbose", &gerr)) { | |
1034 | /* enable all log levels */ | |
1035 | config->log_level = G_LOG_LEVEL_MASK; | |
1036 | } | |
d951fada MR |
1037 | if (g_key_file_has_key(keyfile, "general", "retry-path", NULL)) { |
1038 | config->retry_path = | |
1039 | g_key_file_get_boolean(keyfile, "general", "retry-path", &gerr); | |
1040 | } | |
e236d060 MAL |
1041 | if (g_key_file_has_key(keyfile, "general", "blacklist", NULL)) { |
1042 | config->bliststr = | |
1043 | g_key_file_get_string(keyfile, "general", "blacklist", &gerr); | |
1044 | config->blacklist = g_list_concat(config->blacklist, | |
1045 | split_list(config->bliststr, ",")); | |
1046 | } | |
1047 | ||
1048 | end: | |
1049 | g_key_file_free(keyfile); | |
1050 | if (gerr && | |
1051 | !(gerr->domain == G_FILE_ERROR && gerr->code == G_FILE_ERROR_NOENT)) { | |
1052 | g_critical("error loading configuration from path: %s, %s", | |
1053 | QGA_CONF_DEFAULT, gerr->message); | |
1054 | exit(EXIT_FAILURE); | |
1055 | } | |
1056 | g_clear_error(&gerr); | |
1057 | } | |
1058 | ||
aeadcbb6 MAL |
1059 | static gchar *list_join(GList *list, const gchar separator) |
1060 | { | |
1061 | GString *str = g_string_new(""); | |
1062 | ||
1063 | while (list) { | |
1064 | str = g_string_append(str, (gchar *)list->data); | |
1065 | list = g_list_next(list); | |
1066 | if (list) { | |
1067 | str = g_string_append_c(str, separator); | |
1068 | } | |
1069 | } | |
1070 | ||
1071 | return g_string_free(str, FALSE); | |
1072 | } | |
1073 | ||
1074 | static void config_dump(GAConfig *config) | |
1075 | { | |
1076 | GError *error = NULL; | |
1077 | GKeyFile *keyfile; | |
1078 | gchar *tmp; | |
1079 | ||
1080 | keyfile = g_key_file_new(); | |
1081 | g_assert(keyfile); | |
1082 | ||
1083 | g_key_file_set_boolean(keyfile, "general", "daemon", config->daemonize); | |
1084 | g_key_file_set_string(keyfile, "general", "method", config->method); | |
26de2296 SH |
1085 | if (config->channel_path) { |
1086 | g_key_file_set_string(keyfile, "general", "path", config->channel_path); | |
1087 | } | |
aeadcbb6 MAL |
1088 | if (config->log_filepath) { |
1089 | g_key_file_set_string(keyfile, "general", "logfile", | |
1090 | config->log_filepath); | |
1091 | } | |
1092 | g_key_file_set_string(keyfile, "general", "pidfile", config->pid_filepath); | |
1093 | #ifdef CONFIG_FSFREEZE | |
1094 | if (config->fsfreeze_hook) { | |
1095 | g_key_file_set_string(keyfile, "general", "fsfreeze-hook", | |
1096 | config->fsfreeze_hook); | |
1097 | } | |
1098 | #endif | |
1099 | g_key_file_set_string(keyfile, "general", "statedir", config->state_dir); | |
1100 | g_key_file_set_boolean(keyfile, "general", "verbose", | |
1101 | config->log_level == G_LOG_LEVEL_MASK); | |
d951fada MR |
1102 | g_key_file_set_boolean(keyfile, "general", "retry-path", |
1103 | config->retry_path); | |
aeadcbb6 MAL |
1104 | tmp = list_join(config->blacklist, ','); |
1105 | g_key_file_set_string(keyfile, "general", "blacklist", tmp); | |
1106 | g_free(tmp); | |
1107 | ||
1108 | tmp = g_key_file_to_data(keyfile, NULL, &error); | |
cbcd9ba1 MAL |
1109 | if (error) { |
1110 | g_critical("Failed to dump keyfile: %s", error->message); | |
1111 | g_clear_error(&error); | |
1112 | } else { | |
1113 | printf("%s", tmp); | |
1114 | } | |
aeadcbb6 MAL |
1115 | |
1116 | g_free(tmp); | |
1117 | g_key_file_free(keyfile); | |
1118 | } | |
1119 | ||
e236d060 | 1120 | static void config_parse(GAConfig *config, int argc, char **argv) |
7a406694 | 1121 | { |
d951fada | 1122 | const char *sopt = "hVvdm:p:l:f:F::b:s:t:Dr"; |
7a406694 | 1123 | int opt_ind = 0, ch; |
48ff7a62 MR |
1124 | const struct option lopt[] = { |
1125 | { "help", 0, NULL, 'h' }, | |
1126 | { "version", 0, NULL, 'V' }, | |
aeadcbb6 | 1127 | { "dump-conf", 0, NULL, 'D' }, |
bc62fa03 MR |
1128 | { "logfile", 1, NULL, 'l' }, |
1129 | { "pidfile", 1, NULL, 'f' }, | |
ec0f694c TS |
1130 | #ifdef CONFIG_FSFREEZE |
1131 | { "fsfreeze-hook", 2, NULL, 'F' }, | |
1132 | #endif | |
48ff7a62 | 1133 | { "verbose", 0, NULL, 'v' }, |
bc62fa03 MR |
1134 | { "method", 1, NULL, 'm' }, |
1135 | { "path", 1, NULL, 'p' }, | |
48ff7a62 | 1136 | { "daemonize", 0, NULL, 'd' }, |
bc62fa03 MR |
1137 | { "blacklist", 1, NULL, 'b' }, |
1138 | #ifdef _WIN32 | |
1139 | { "service", 1, NULL, 's' }, | |
f22d85e9 | 1140 | #endif |
f789aa7b | 1141 | { "statedir", 1, NULL, 't' }, |
d951fada | 1142 | { "retry-path", 0, NULL, 'r' }, |
48ff7a62 MR |
1143 | { NULL, 0, NULL, 0 } |
1144 | }; | |
48ff7a62 MR |
1145 | |
1146 | while ((ch = getopt_long(argc, argv, sopt, lopt, &opt_ind)) != -1) { | |
1147 | switch (ch) { | |
1148 | case 'm': | |
e236d060 | 1149 | g_free(config->method); |
7a406694 | 1150 | config->method = g_strdup(optarg); |
48ff7a62 MR |
1151 | break; |
1152 | case 'p': | |
e236d060 | 1153 | g_free(config->channel_path); |
7a406694 | 1154 | config->channel_path = g_strdup(optarg); |
48ff7a62 MR |
1155 | break; |
1156 | case 'l': | |
e236d060 | 1157 | g_free(config->log_filepath); |
7a406694 | 1158 | config->log_filepath = g_strdup(optarg); |
48ff7a62 MR |
1159 | break; |
1160 | case 'f': | |
e236d060 | 1161 | g_free(config->pid_filepath); |
7a406694 | 1162 | config->pid_filepath = g_strdup(optarg); |
48ff7a62 | 1163 | break; |
ec0f694c TS |
1164 | #ifdef CONFIG_FSFREEZE |
1165 | case 'F': | |
e236d060 | 1166 | g_free(config->fsfreeze_hook); |
7a406694 | 1167 | config->fsfreeze_hook = g_strdup(optarg ?: QGA_FSFREEZE_HOOK_DEFAULT); |
ec0f694c TS |
1168 | break; |
1169 | #endif | |
f789aa7b | 1170 | case 't': |
e236d060 | 1171 | g_free(config->state_dir); |
7a406694 | 1172 | config->state_dir = g_strdup(optarg); |
2e38d990 | 1173 | break; |
48ff7a62 MR |
1174 | case 'v': |
1175 | /* enable all log levels */ | |
7a406694 | 1176 | config->log_level = G_LOG_LEVEL_MASK; |
48ff7a62 MR |
1177 | break; |
1178 | case 'V': | |
8efacc43 | 1179 | printf("QEMU Guest Agent %s\n", QEMU_VERSION); |
c6c84523 | 1180 | exit(EXIT_SUCCESS); |
48ff7a62 | 1181 | case 'd': |
7a406694 | 1182 | config->daemonize = 1; |
48ff7a62 | 1183 | break; |
aeadcbb6 MAL |
1184 | case 'D': |
1185 | config->dumpconf = 1; | |
1186 | break; | |
d951fada MR |
1187 | case 'r': |
1188 | config->retry_path = true; | |
1189 | break; | |
abd6cf6d | 1190 | case 'b': { |
c8057f95 | 1191 | if (is_help_option(optarg)) { |
1527badb | 1192 | qmp_for_each_command(&ga_commands, ga_print_cmd, NULL); |
c6c84523 | 1193 | exit(EXIT_SUCCESS); |
abd6cf6d | 1194 | } |
7a406694 MAL |
1195 | config->blacklist = g_list_concat(config->blacklist, |
1196 | split_list(optarg, ",")); | |
abd6cf6d MR |
1197 | break; |
1198 | } | |
bc62fa03 MR |
1199 | #ifdef _WIN32 |
1200 | case 's': | |
7a406694 MAL |
1201 | config->service = optarg; |
1202 | if (strcmp(config->service, "install") == 0) { | |
f311f2c2 | 1203 | if (ga_install_vss_provider()) { |
c6c84523 | 1204 | exit(EXIT_FAILURE); |
f311f2c2 | 1205 | } |
7a406694 MAL |
1206 | if (ga_install_service(config->channel_path, |
1207 | config->log_filepath, config->state_dir)) { | |
c6c84523 | 1208 | exit(EXIT_FAILURE); |
f311f2c2 | 1209 | } |
c6c84523 | 1210 | exit(EXIT_SUCCESS); |
7a406694 | 1211 | } else if (strcmp(config->service, "uninstall") == 0) { |
f311f2c2 | 1212 | ga_uninstall_vss_provider(); |
c6c84523 | 1213 | exit(ga_uninstall_service()); |
7a406694 | 1214 | } else if (strcmp(config->service, "vss-install") == 0) { |
5e031072 | 1215 | if (ga_install_vss_provider()) { |
c6c84523 | 1216 | exit(EXIT_FAILURE); |
5e031072 | 1217 | } |
c6c84523 | 1218 | exit(EXIT_SUCCESS); |
7a406694 | 1219 | } else if (strcmp(config->service, "vss-uninstall") == 0) { |
5e031072 | 1220 | ga_uninstall_vss_provider(); |
c6c84523 | 1221 | exit(EXIT_SUCCESS); |
bc62fa03 MR |
1222 | } else { |
1223 | printf("Unknown service command.\n"); | |
c6c84523 | 1224 | exit(EXIT_FAILURE); |
bc62fa03 MR |
1225 | } |
1226 | break; | |
1227 | #endif | |
48ff7a62 MR |
1228 | case 'h': |
1229 | usage(argv[0]); | |
c6c84523 | 1230 | exit(EXIT_SUCCESS); |
48ff7a62 MR |
1231 | case '?': |
1232 | g_print("Unknown option, try '%s --help' for more information.\n", | |
1233 | argv[0]); | |
c6c84523 | 1234 | exit(EXIT_FAILURE); |
48ff7a62 MR |
1235 | } |
1236 | } | |
7a406694 MAL |
1237 | } |
1238 | ||
1239 | static void config_free(GAConfig *config) | |
1240 | { | |
1241 | g_free(config->method); | |
1242 | g_free(config->log_filepath); | |
1243 | g_free(config->pid_filepath); | |
1244 | g_free(config->state_dir); | |
1245 | g_free(config->channel_path); | |
e236d060 | 1246 | g_free(config->bliststr); |
7a406694 MAL |
1247 | #ifdef CONFIG_FSFREEZE |
1248 | g_free(config->fsfreeze_hook); | |
1249 | #endif | |
2aa67a91 | 1250 | g_list_free_full(config->blacklist, g_free); |
7a406694 MAL |
1251 | g_free(config); |
1252 | } | |
1253 | ||
e3d31039 | 1254 | static bool check_is_frozen(GAState *s) |
7a406694 | 1255 | { |
f789aa7b MR |
1256 | #ifndef _WIN32 |
1257 | /* check if a previous instance of qemu-ga exited with filesystems' state | |
1258 | * marked as frozen. this could be a stale value (a non-qemu-ga process | |
1259 | * or reboot may have since unfrozen them), but better to require an | |
1260 | * uneeded unfreeze than to risk hanging on start-up | |
1261 | */ | |
1262 | struct stat st; | |
1263 | if (stat(s->state_filepath_isfrozen, &st) == -1) { | |
1264 | /* it's okay if the file doesn't exist, but if we can't access for | |
1265 | * some other reason, such as permissions, there's a configuration | |
1266 | * that needs to be addressed. so just bail now before we get into | |
1267 | * more trouble later | |
1268 | */ | |
1269 | if (errno != ENOENT) { | |
1270 | g_critical("unable to access state file at path %s: %s", | |
1271 | s->state_filepath_isfrozen, strerror(errno)); | |
1272 | return EXIT_FAILURE; | |
1273 | } | |
1274 | } else { | |
1275 | g_warning("previous instance appears to have exited with frozen" | |
1276 | " filesystems. deferring logging/pidfile creation and" | |
1277 | " disabling non-fsfreeze-safe commands until" | |
1278 | " guest-fsfreeze-thaw is issued, or filesystems are" | |
1279 | " manually unfrozen and the file %s is removed", | |
1280 | s->state_filepath_isfrozen); | |
e3d31039 MAL |
1281 | return true; |
1282 | } | |
1283 | #endif | |
1284 | return false; | |
1285 | } | |
1286 | ||
0f4d3a49 | 1287 | static GAState *initialize_agent(GAConfig *config, int socket_activation) |
e3d31039 | 1288 | { |
50d5b3c4 MR |
1289 | GAState *s = g_new0(GAState, 1); |
1290 | ||
1291 | g_assert(ga_state == NULL); | |
1292 | ||
1293 | s->log_level = config->log_level; | |
1294 | s->log_file = stderr; | |
1295 | #ifdef CONFIG_FSFREEZE | |
1296 | s->fsfreeze_hook = config->fsfreeze_hook; | |
1297 | #endif | |
1298 | s->pstate_filepath = g_strdup_printf("%s/qga.state", config->state_dir); | |
1299 | s->state_filepath_isfrozen = g_strdup_printf("%s/qga.state.isfrozen", | |
1300 | config->state_dir); | |
1301 | s->frozen = check_is_frozen(s); | |
e3d31039 MAL |
1302 | |
1303 | g_log_set_default_handler(ga_log, s); | |
1304 | g_log_set_fatal_mask(NULL, G_LOG_LEVEL_ERROR); | |
1305 | ga_enable_logging(s); | |
1306 | ||
1307 | #ifdef _WIN32 | |
1308 | /* On win32 the state directory is application specific (be it the default | |
1309 | * or a user override). We got past the command line parsing; let's create | |
1310 | * the directory (with any intermediate directories). If we run into an | |
1311 | * error later on, we won't try to clean up the directory, it is considered | |
1312 | * persistent. | |
1313 | */ | |
1314 | if (g_mkdir_with_parents(config->state_dir, S_IRWXU) == -1) { | |
1315 | g_critical("unable to create (an ancestor of) the state directory" | |
1316 | " '%s': %s", config->state_dir, strerror(errno)); | |
50d5b3c4 | 1317 | return NULL; |
f789aa7b MR |
1318 | } |
1319 | #endif | |
1320 | ||
1321 | if (ga_is_frozen(s)) { | |
7a406694 | 1322 | if (config->daemonize) { |
8e8be266 | 1323 | /* delay opening/locking of pidfile till filesystems are unfrozen */ |
7a406694 | 1324 | s->deferred_options.pid_filepath = config->pid_filepath; |
f789aa7b MR |
1325 | become_daemon(NULL); |
1326 | } | |
7a406694 | 1327 | if (config->log_filepath) { |
f789aa7b | 1328 | /* delay opening the log file till filesystems are unfrozen */ |
7a406694 | 1329 | s->deferred_options.log_filepath = config->log_filepath; |
f789aa7b MR |
1330 | } |
1331 | ga_disable_logging(s); | |
1527badb | 1332 | qmp_for_each_command(&ga_commands, ga_disable_non_whitelisted, NULL); |
f789aa7b | 1333 | } else { |
7a406694 MAL |
1334 | if (config->daemonize) { |
1335 | become_daemon(config->pid_filepath); | |
f789aa7b | 1336 | } |
7a406694 MAL |
1337 | if (config->log_filepath) { |
1338 | FILE *log_file = ga_open_logfile(config->log_filepath); | |
6c615ec5 | 1339 | if (!log_file) { |
f789aa7b MR |
1340 | g_critical("unable to open specified log file: %s", |
1341 | strerror(errno)); | |
50d5b3c4 | 1342 | return NULL; |
f789aa7b | 1343 | } |
6c615ec5 | 1344 | s->log_file = log_file; |
f789aa7b MR |
1345 | } |
1346 | } | |
1347 | ||
39097daf MR |
1348 | /* load persistent state from disk */ |
1349 | if (!read_persistent_state(&s->pstate, | |
1350 | s->pstate_filepath, | |
1351 | ga_is_frozen(s))) { | |
1352 | g_critical("failed to load persistent state"); | |
50d5b3c4 | 1353 | return NULL; |
39097daf MR |
1354 | } |
1355 | ||
7a406694 MAL |
1356 | config->blacklist = ga_command_blacklist_init(config->blacklist); |
1357 | if (config->blacklist) { | |
1358 | GList *l = config->blacklist; | |
1359 | s->blacklist = config->blacklist; | |
f22d85e9 | 1360 | do { |
7a406694 | 1361 | g_debug("disabling command: %s", (char *)l->data); |
1527badb | 1362 | qmp_disable_command(&ga_commands, l->data); |
7a406694 MAL |
1363 | l = g_list_next(l); |
1364 | } while (l); | |
f22d85e9 | 1365 | } |
e3d4d252 MR |
1366 | s->command_state = ga_command_state_new(); |
1367 | ga_command_state_init(s, s->command_state); | |
1368 | ga_command_state_init_all(s->command_state); | |
62815d85 | 1369 | json_message_parser_init(&s->parser, process_event, s, NULL); |
f8837b37 | 1370 | |
d8ca685a | 1371 | #ifndef _WIN32 |
125b310e MR |
1372 | if (!register_signal_handlers()) { |
1373 | g_critical("failed to register signal handlers"); | |
50d5b3c4 | 1374 | return NULL; |
125b310e | 1375 | } |
d8ca685a | 1376 | #endif |
48ff7a62 | 1377 | |
125b310e | 1378 | s->main_loop = g_main_loop_new(NULL, false); |
26de2296 | 1379 | |
0f4d3a49 MR |
1380 | s->config = config; |
1381 | s->socket_activation = socket_activation; | |
b70d6afe BA |
1382 | |
1383 | #ifdef _WIN32 | |
1384 | s->wakeup_event = CreateEvent(NULL, TRUE, FALSE, TEXT("WakeUp")); | |
1385 | if (s->wakeup_event == NULL) { | |
1386 | g_critical("CreateEvent failed"); | |
1387 | return NULL; | |
1388 | } | |
1389 | #endif | |
1390 | ||
50d5b3c4 MR |
1391 | ga_state = s; |
1392 | return s; | |
1393 | } | |
1394 | ||
1395 | static void cleanup_agent(GAState *s) | |
1396 | { | |
b70d6afe BA |
1397 | #ifdef _WIN32 |
1398 | CloseHandle(s->wakeup_event); | |
1399 | #endif | |
50d5b3c4 MR |
1400 | if (s->command_state) { |
1401 | ga_command_state_cleanup_all(s->command_state); | |
1402 | ga_command_state_free(s->command_state); | |
1403 | json_message_parser_destroy(&s->parser); | |
1404 | } | |
50d5b3c4 MR |
1405 | g_free(s->pstate_filepath); |
1406 | g_free(s->state_filepath_isfrozen); | |
1407 | if (s->main_loop) { | |
1408 | g_main_loop_unref(s->main_loop); | |
1409 | } | |
1410 | g_free(s); | |
1411 | ga_state = NULL; | |
1412 | } | |
1413 | ||
d951fada | 1414 | static int run_agent_once(GAState *s) |
50d5b3c4 | 1415 | { |
0f4d3a49 MR |
1416 | if (!channel_init(s, s->config->method, s->config->channel_path, |
1417 | s->socket_activation ? FIRST_SOCKET_ACTIVATION_FD : -1)) { | |
125b310e | 1418 | g_critical("failed to initialize guest agent channel"); |
e3d31039 | 1419 | return EXIT_FAILURE; |
125b310e | 1420 | } |
d88495a8 | 1421 | |
48ff7a62 MR |
1422 | g_main_loop_run(ga_state->main_loop); |
1423 | ||
d951fada MR |
1424 | if (s->channel) { |
1425 | ga_channel_free(s->channel); | |
1426 | } | |
1427 | ||
e3d31039 MAL |
1428 | return EXIT_SUCCESS; |
1429 | } | |
48ff7a62 | 1430 | |
b70d6afe BA |
1431 | static void wait_for_channel_availability(GAState *s) |
1432 | { | |
1433 | g_warning("waiting for channel path..."); | |
1434 | #ifndef _WIN32 | |
1435 | sleep(QGA_RETRY_INTERVAL); | |
1436 | #else | |
1437 | DWORD dwWaitResult; | |
1438 | ||
1439 | dwWaitResult = WaitForSingleObject(s->wakeup_event, INFINITE); | |
1440 | ||
1441 | switch (dwWaitResult) { | |
1442 | case WAIT_OBJECT_0: | |
1443 | break; | |
1444 | case WAIT_TIMEOUT: | |
1445 | break; | |
1446 | default: | |
1447 | g_critical("WaitForSingleObject failed"); | |
1448 | } | |
1449 | #endif | |
1450 | } | |
1451 | ||
d951fada MR |
1452 | static int run_agent(GAState *s) |
1453 | { | |
1454 | int ret = EXIT_SUCCESS; | |
1455 | ||
1456 | s->force_exit = false; | |
1457 | ||
1458 | do { | |
1459 | ret = run_agent_once(s); | |
1460 | if (s->config->retry_path && !s->force_exit) { | |
1461 | g_warning("agent stopped unexpectedly, restarting..."); | |
b70d6afe | 1462 | wait_for_channel_availability(s); |
d951fada MR |
1463 | } |
1464 | } while (s->config->retry_path && !s->force_exit); | |
1465 | ||
1466 | return ret; | |
1467 | } | |
1468 | ||
1469 | static void stop_agent(GAState *s, bool requested) | |
1470 | { | |
1471 | if (!s->force_exit) { | |
1472 | s->force_exit = requested; | |
1473 | } | |
1474 | ||
1475 | if (g_main_loop_is_running(s->main_loop)) { | |
1476 | g_main_loop_quit(s->main_loop); | |
1477 | } | |
1478 | } | |
1479 | ||
e3d31039 MAL |
1480 | int main(int argc, char **argv) |
1481 | { | |
1482 | int ret = EXIT_SUCCESS; | |
50d5b3c4 | 1483 | GAState *s; |
e236d060 | 1484 | GAConfig *config = g_new0(GAConfig, 1); |
53fabd4b | 1485 | int socket_activation; |
e3d31039 | 1486 | |
6eaeae37 MAL |
1487 | config->log_level = G_LOG_LEVEL_ERROR | G_LOG_LEVEL_CRITICAL; |
1488 | ||
1527badb | 1489 | qga_qmp_init_marshal(&ga_commands); |
e3d31039 MAL |
1490 | |
1491 | init_dfl_pathnames(); | |
e236d060 MAL |
1492 | config_load(config); |
1493 | config_parse(config, argc, argv); | |
e3d31039 MAL |
1494 | |
1495 | if (config->pid_filepath == NULL) { | |
1496 | config->pid_filepath = g_strdup(dfl_pathnames.pidfile); | |
1497 | } | |
1498 | ||
1499 | if (config->state_dir == NULL) { | |
1500 | config->state_dir = g_strdup(dfl_pathnames.state_dir); | |
1501 | } | |
1502 | ||
1503 | if (config->method == NULL) { | |
1504 | config->method = g_strdup("virtio-serial"); | |
125b310e | 1505 | } |
125b310e | 1506 | |
53fabd4b PB |
1507 | socket_activation = check_socket_activation(); |
1508 | if (socket_activation > 1) { | |
1509 | g_critical("qemu-ga only supports listening on one socket"); | |
1510 | ret = EXIT_FAILURE; | |
1511 | goto end; | |
1512 | } | |
1513 | if (socket_activation) { | |
bd269ebc | 1514 | SocketAddress *addr; |
26de2296 SH |
1515 | |
1516 | g_free(config->method); | |
1517 | g_free(config->channel_path); | |
1518 | config->method = NULL; | |
1519 | config->channel_path = NULL; | |
1520 | ||
53fabd4b | 1521 | addr = socket_local_address(FIRST_SOCKET_ACTIVATION_FD, NULL); |
26de2296 | 1522 | if (addr) { |
bd269ebc | 1523 | if (addr->type == SOCKET_ADDRESS_TYPE_UNIX) { |
26de2296 | 1524 | config->method = g_strdup("unix-listen"); |
bd269ebc | 1525 | } else if (addr->type == SOCKET_ADDRESS_TYPE_VSOCK) { |
26de2296 SH |
1526 | config->method = g_strdup("vsock-listen"); |
1527 | } | |
1528 | ||
bd269ebc | 1529 | qapi_free_SocketAddress(addr); |
26de2296 SH |
1530 | } |
1531 | ||
1532 | if (!config->method) { | |
1533 | g_critical("unsupported listen fd type"); | |
1534 | ret = EXIT_FAILURE; | |
1535 | goto end; | |
1536 | } | |
1537 | } else if (config->channel_path == NULL) { | |
e3d31039 MAL |
1538 | if (strcmp(config->method, "virtio-serial") == 0) { |
1539 | /* try the default path for the virtio-serial port */ | |
1540 | config->channel_path = g_strdup(QGA_VIRTIO_PATH_DEFAULT); | |
1541 | } else if (strcmp(config->method, "isa-serial") == 0) { | |
1542 | /* try the default path for the serial port - COM1 */ | |
1543 | config->channel_path = g_strdup(QGA_SERIAL_PATH_DEFAULT); | |
1544 | } else { | |
1545 | g_critical("must specify a path for this channel"); | |
1546 | ret = EXIT_FAILURE; | |
1547 | goto end; | |
1548 | } | |
1549 | } | |
1550 | ||
aeadcbb6 MAL |
1551 | if (config->dumpconf) { |
1552 | config_dump(config); | |
1553 | goto end; | |
1554 | } | |
1555 | ||
0f4d3a49 | 1556 | s = initialize_agent(config, socket_activation); |
50d5b3c4 MR |
1557 | if (!s) { |
1558 | g_critical("error initializing guest agent"); | |
1559 | goto end; | |
1560 | } | |
d88495a8 MR |
1561 | |
1562 | #ifdef _WIN32 | |
1563 | if (config->daemonize) { | |
1564 | SERVICE_TABLE_ENTRY service_table[] = { | |
1565 | { (char *)QGA_SERVICE_NAME, service_main }, { NULL, NULL } }; | |
1566 | StartServiceCtrlDispatcher(service_table); | |
1567 | } else { | |
1568 | ret = run_agent(s); | |
1569 | } | |
1570 | #else | |
0f4d3a49 | 1571 | ret = run_agent(s); |
d88495a8 MR |
1572 | #endif |
1573 | ||
50d5b3c4 | 1574 | cleanup_agent(s); |
e3d31039 MAL |
1575 | |
1576 | end: | |
7a406694 MAL |
1577 | if (config->daemonize) { |
1578 | unlink(config->pid_filepath); | |
125b310e | 1579 | } |
2e38d990 | 1580 | |
7a406694 | 1581 | config_free(config); |
2e38d990 | 1582 | |
e3d31039 | 1583 | return ret; |
48ff7a62 | 1584 | } |