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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 |
49f95221 | 21 | #include "qemu/help-texts.h" |
86cdf9ec | 22 | #include "qapi/qmp/json-parser.h" |
452fcdbc | 23 | #include "qapi/qmp/qdict.h" |
7b1b5d19 | 24 | #include "qapi/qmp/qjson.h" |
dc03272d | 25 | #include "guest-agent-core.h" |
00ca24ff | 26 | #include "qga-qapi-init-commands.h" |
7b1b5d19 | 27 | #include "qapi/qmp/qerror.h" |
e688df6b | 28 | #include "qapi/error.h" |
dc03272d | 29 | #include "channel.h" |
a9eacf8b | 30 | #include "qemu/cutils.h" |
f348b6d1 | 31 | #include "qemu/help_option.h" |
26de2296 | 32 | #include "qemu/sockets.h" |
53fabd4b | 33 | #include "qemu/systemd.h" |
8f1c29af | 34 | #include "qemu-version.h" |
bc62fa03 | 35 | #ifdef _WIN32 |
b70d6afe | 36 | #include <dbt.h> |
bc62fa03 | 37 | #include "qga/service-win32.h" |
f311f2c2 | 38 | #include "qga/vss-win32.h" |
bc62fa03 | 39 | #endif |
ec0f694c TS |
40 | #ifdef __linux__ |
41 | #include <linux/fs.h> | |
42 | #ifdef FIFREEZE | |
43 | #define CONFIG_FSFREEZE | |
44 | #endif | |
45 | #endif | |
48ff7a62 | 46 | |
7868e26e | 47 | #ifndef _WIN32 |
48ff7a62 | 48 | #define QGA_VIRTIO_PATH_DEFAULT "/dev/virtio-ports/org.qemu.guest_agent.0" |
c394ecb7 | 49 | #define QGA_STATE_RELATIVE_DIR "run" |
a749f42d | 50 | #define QGA_SERIAL_PATH_DEFAULT "/dev/ttyS0" |
7868e26e MR |
51 | #else |
52 | #define QGA_VIRTIO_PATH_DEFAULT "\\\\.\\Global\\org.qemu.guest_agent.0" | |
c394ecb7 | 53 | #define QGA_STATE_RELATIVE_DIR "qemu-ga" |
a749f42d | 54 | #define QGA_SERIAL_PATH_DEFAULT "COM1" |
7868e26e | 55 | #endif |
ec0f694c TS |
56 | #ifdef CONFIG_FSFREEZE |
57 | #define QGA_FSFREEZE_HOOK_DEFAULT CONFIG_QEMU_CONFDIR "/fsfreeze-hook" | |
58 | #endif | |
3cf0bed8 | 59 | #define QGA_SENTINEL_BYTE 0xFF |
e236d060 | 60 | #define QGA_CONF_DEFAULT CONFIG_QEMU_CONFDIR G_DIR_SEPARATOR_S "qemu-ga.conf" |
d951fada | 61 | #define QGA_RETRY_INTERVAL 5 |
48ff7a62 | 62 | |
c394ecb7 LE |
63 | static struct { |
64 | const char *state_dir; | |
65 | const char *pidfile; | |
66 | } dfl_pathnames; | |
67 | ||
39097daf MR |
68 | typedef struct GAPersistentState { |
69 | #define QGA_PSTATE_DEFAULT_FD_COUNTER 1000 | |
70 | int64_t fd_counter; | |
71 | } GAPersistentState; | |
72 | ||
0f4d3a49 MR |
73 | typedef struct GAConfig GAConfig; |
74 | ||
48ff7a62 MR |
75 | struct GAState { |
76 | JSONMessageParser parser; | |
77 | GMainLoop *main_loop; | |
125b310e | 78 | GAChannel *channel; |
48ff7a62 MR |
79 | bool virtio; /* fastpath to check for virtio to deal with poll() quirks */ |
80 | GACommandState *command_state; | |
81 | GLogLevelFlags log_level; | |
82 | FILE *log_file; | |
83 | bool logging_enabled; | |
bc62fa03 MR |
84 | #ifdef _WIN32 |
85 | GAService service; | |
b70d6afe | 86 | HANDLE wakeup_event; |
bc62fa03 | 87 | #endif |
3cf0bed8 | 88 | bool delimit_response; |
f22d85e9 MR |
89 | bool frozen; |
90 | GList *blacklist; | |
d4c8a5d4 | 91 | char *state_filepath_isfrozen; |
f789aa7b MR |
92 | struct { |
93 | const char *log_filepath; | |
94 | const char *pid_filepath; | |
95 | } deferred_options; | |
ec0f694c TS |
96 | #ifdef CONFIG_FSFREEZE |
97 | const char *fsfreeze_hook; | |
98 | #endif | |
d4c8a5d4 | 99 | gchar *pstate_filepath; |
39097daf | 100 | GAPersistentState pstate; |
0f4d3a49 MR |
101 | GAConfig *config; |
102 | int socket_activation; | |
d951fada | 103 | bool force_exit; |
48ff7a62 MR |
104 | }; |
105 | ||
3cf0bed8 | 106 | struct GAState *ga_state; |
1527badb | 107 | QmpCommandList ga_commands; |
48ff7a62 | 108 | |
f22d85e9 MR |
109 | /* commands that are safe to issue while filesystems are frozen */ |
110 | static const char *ga_freeze_whitelist[] = { | |
111 | "guest-ping", | |
112 | "guest-info", | |
113 | "guest-sync", | |
c5dcb6ae | 114 | "guest-sync-delimited", |
f22d85e9 MR |
115 | "guest-fsfreeze-status", |
116 | "guest-fsfreeze-thaw", | |
117 | NULL | |
118 | }; | |
119 | ||
bc62fa03 MR |
120 | #ifdef _WIN32 |
121 | DWORD WINAPI service_ctrl_handler(DWORD ctrl, DWORD type, LPVOID data, | |
122 | LPVOID ctx); | |
b70d6afe | 123 | DWORD WINAPI handle_serial_device_events(DWORD type, LPVOID data); |
bc62fa03 MR |
124 | VOID WINAPI service_main(DWORD argc, TCHAR *argv[]); |
125 | #endif | |
d88495a8 | 126 | static int run_agent(GAState *s); |
d951fada | 127 | static void stop_agent(GAState *s, bool requested); |
bc62fa03 | 128 | |
c394ecb7 LE |
129 | static void |
130 | init_dfl_pathnames(void) | |
131 | { | |
1fbf2665 MAL |
132 | g_autofree char *state = qemu_get_local_state_dir(); |
133 | ||
c394ecb7 LE |
134 | g_assert(dfl_pathnames.state_dir == NULL); |
135 | g_assert(dfl_pathnames.pidfile == NULL); | |
1fbf2665 MAL |
136 | dfl_pathnames.state_dir = g_build_filename(state, QGA_STATE_RELATIVE_DIR, NULL); |
137 | dfl_pathnames.pidfile = g_build_filename(state, QGA_STATE_RELATIVE_DIR, "qemu-ga.pid", NULL); | |
c394ecb7 LE |
138 | } |
139 | ||
48ff7a62 MR |
140 | static void quit_handler(int sig) |
141 | { | |
f22d85e9 MR |
142 | /* if we're frozen, don't exit unless we're absolutely forced to, |
143 | * because it's basically impossible for graceful exit to complete | |
144 | * unless all log/pid files are on unfreezable filesystems. there's | |
145 | * also a very likely chance killing the agent before unfreezing | |
146 | * the filesystems is a mistake (or will be viewed as one later). | |
94d81ae8 SJ |
147 | * On Windows the freeze interval is limited to 10 seconds, so |
148 | * we should quit, but first we should wait for the timeout, thaw | |
149 | * the filesystem and quit. | |
f22d85e9 MR |
150 | */ |
151 | if (ga_is_frozen(ga_state)) { | |
94d81ae8 SJ |
152 | #ifdef _WIN32 |
153 | int i = 0; | |
154 | Error *err = NULL; | |
155 | HANDLE hEventTimeout; | |
156 | ||
157 | g_debug("Thawing filesystems before exiting"); | |
158 | ||
159 | hEventTimeout = OpenEvent(EVENT_ALL_ACCESS, FALSE, EVENT_NAME_TIMEOUT); | |
160 | if (hEventTimeout) { | |
161 | WaitForSingleObject(hEventTimeout, 0); | |
162 | CloseHandle(hEventTimeout); | |
163 | } | |
0692b03e | 164 | qga_vss_fsfreeze(&i, false, NULL, &err); |
94d81ae8 SJ |
165 | if (err) { |
166 | g_debug("Error unfreezing filesystems prior to exiting: %s", | |
167 | error_get_pretty(err)); | |
168 | error_free(err); | |
169 | } | |
170 | #else | |
f22d85e9 | 171 | return; |
94d81ae8 | 172 | #endif |
f22d85e9 | 173 | } |
2542bfd5 | 174 | g_debug("received signal num %d, quitting", sig); |
48ff7a62 | 175 | |
d951fada | 176 | stop_agent(ga_state, true); |
48ff7a62 MR |
177 | } |
178 | ||
bc62fa03 | 179 | #ifndef _WIN32 |
125b310e | 180 | static gboolean register_signal_handlers(void) |
48ff7a62 | 181 | { |
dc8764f0 | 182 | struct sigaction sigact; |
48ff7a62 MR |
183 | int ret; |
184 | ||
185 | memset(&sigact, 0, sizeof(struct sigaction)); | |
186 | sigact.sa_handler = quit_handler; | |
187 | ||
188 | ret = sigaction(SIGINT, &sigact, NULL); | |
189 | if (ret == -1) { | |
190 | g_error("error configuring signal handler: %s", strerror(errno)); | |
48ff7a62 MR |
191 | } |
192 | ret = sigaction(SIGTERM, &sigact, NULL); | |
193 | if (ret == -1) { | |
194 | g_error("error configuring signal handler: %s", strerror(errno)); | |
195 | } | |
11d0f125 | 196 | |
4005b473 DL |
197 | sigact.sa_handler = SIG_IGN; |
198 | if (sigaction(SIGPIPE, &sigact, NULL) != 0) { | |
199 | g_error("error configuring SIGPIPE signal handler: %s", | |
200 | strerror(errno)); | |
201 | } | |
202 | ||
125b310e | 203 | return true; |
48ff7a62 | 204 | } |
04b4e75f LC |
205 | |
206 | /* TODO: use this in place of all post-fork() fclose(std*) callers */ | |
207 | void reopen_fd_to_null(int fd) | |
208 | { | |
209 | int nullfd; | |
210 | ||
211 | nullfd = open("/dev/null", O_RDWR); | |
212 | if (nullfd < 0) { | |
213 | return; | |
214 | } | |
215 | ||
216 | dup2(nullfd, fd); | |
217 | ||
218 | if (nullfd != fd) { | |
219 | close(nullfd); | |
220 | } | |
221 | } | |
d8ca685a | 222 | #endif |
48ff7a62 MR |
223 | |
224 | static void usage(const char *cmd) | |
225 | { | |
226 | printf( | |
4bdd0416 | 227 | "Usage: %s [-m <method> -p <path>] [<options>]\n" |
7e563bfb | 228 | "QEMU Guest Agent " QEMU_FULL_VERSION "\n" |
8f1c29af | 229 | QEMU_COPYRIGHT "\n" |
48ff7a62 | 230 | "\n" |
586ef5de SH |
231 | " -m, --method transport method: one of unix-listen, virtio-serial,\n" |
232 | " isa-serial, or vsock-listen (virtio-serial is the default)\n" | |
4bdd0416 | 233 | " -p, --path device/socket path (the default for virtio-serial is:\n" |
a749f42d MM |
234 | " %s,\n" |
235 | " the default for isa-serial is:\n" | |
7b46aadb SH |
236 | " %s).\n" |
237 | " Socket addresses for vsock-listen are written as\n" | |
238 | " <cid>:<port>.\n" | |
48ff7a62 MR |
239 | " -l, --logfile set logfile path, logs to stderr by default\n" |
240 | " -f, --pidfile specify pidfile (default is %s)\n" | |
ec0f694c TS |
241 | #ifdef CONFIG_FSFREEZE |
242 | " -F, --fsfreeze-hook\n" | |
243 | " enable fsfreeze hook. Accepts an optional argument that\n" | |
244 | " specifies script to run on freeze/thaw. Script will be\n" | |
245 | " called with 'freeze'/'thaw' arguments accordingly.\n" | |
246 | " (default is %s)\n" | |
247 | " If using -F with an argument, do not follow -F with a\n" | |
248 | " space.\n" | |
249 | " (for example: -F/var/run/fsfreezehook.sh)\n" | |
250 | #endif | |
f789aa7b MR |
251 | " -t, --statedir specify dir to store state information (absolute paths\n" |
252 | " only, default is %s)\n" | |
48ff7a62 MR |
253 | " -v, --verbose log extra debugging information\n" |
254 | " -V, --version print version information and exit\n" | |
255 | " -d, --daemonize become a daemon\n" | |
bc62fa03 | 256 | #ifdef _WIN32 |
5e031072 | 257 | " -s, --service service commands: install, uninstall, vss-install, vss-uninstall\n" |
d8ca685a | 258 | #endif |
4bdd0416 | 259 | " -b, --blacklist comma-separated list of RPCs to disable (no spaces, \"?\"\n" |
abd6cf6d | 260 | " to list available RPCs)\n" |
aeadcbb6 MAL |
261 | " -D, --dump-conf dump a qemu-ga config file based on current config\n" |
262 | " options / command-line parameters to stdout\n" | |
d951fada MR |
263 | " -r, --retry-path attempt re-opening path if it's unavailable or closed\n" |
264 | " due to an error which may be recoverable in the future\n" | |
265 | " (virtio-serial driver re-install, serial device hot\n" | |
266 | " plug/unplug, etc.)\n" | |
48ff7a62 MR |
267 | " -h, --help display this help and exit\n" |
268 | "\n" | |
f5048cb7 | 269 | QEMU_HELP_BOTTOM "\n" |
8f1c29af | 270 | , cmd, QGA_VIRTIO_PATH_DEFAULT, QGA_SERIAL_PATH_DEFAULT, |
a749f42d | 271 | dfl_pathnames.pidfile, |
ec0f694c TS |
272 | #ifdef CONFIG_FSFREEZE |
273 | QGA_FSFREEZE_HOOK_DEFAULT, | |
274 | #endif | |
c394ecb7 | 275 | dfl_pathnames.state_dir); |
48ff7a62 MR |
276 | } |
277 | ||
48ff7a62 MR |
278 | static const char *ga_log_level_str(GLogLevelFlags level) |
279 | { | |
280 | switch (level & G_LOG_LEVEL_MASK) { | |
86dc17d4 AC |
281 | case G_LOG_LEVEL_ERROR: |
282 | return "error"; | |
283 | case G_LOG_LEVEL_CRITICAL: | |
284 | return "critical"; | |
285 | case G_LOG_LEVEL_WARNING: | |
286 | return "warning"; | |
287 | case G_LOG_LEVEL_MESSAGE: | |
288 | return "message"; | |
289 | case G_LOG_LEVEL_INFO: | |
290 | return "info"; | |
291 | case G_LOG_LEVEL_DEBUG: | |
292 | return "debug"; | |
293 | default: | |
294 | return "user"; | |
48ff7a62 MR |
295 | } |
296 | } | |
297 | ||
298 | bool ga_logging_enabled(GAState *s) | |
299 | { | |
300 | return s->logging_enabled; | |
301 | } | |
302 | ||
303 | void ga_disable_logging(GAState *s) | |
304 | { | |
305 | s->logging_enabled = false; | |
306 | } | |
307 | ||
308 | void ga_enable_logging(GAState *s) | |
309 | { | |
310 | s->logging_enabled = true; | |
311 | } | |
312 | ||
313 | static void ga_log(const gchar *domain, GLogLevelFlags level, | |
314 | const gchar *msg, gpointer opaque) | |
315 | { | |
316 | GAState *s = opaque; | |
48ff7a62 MR |
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 | |
55fa0170 MAL |
331 | g_autoptr(GDateTime) now = g_date_time_new_now_utc(); |
332 | g_autofree char *nowstr = g_date_time_format(now, "%s.%f"); | |
333 | fprintf(s->log_file, "%s: %s: %s\n", nowstr, level_str, msg); | |
48ff7a62 MR |
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 */ | |
f0ccc00b | 362 | static void ga_disable_non_whitelisted(const 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); | |
c98939da | 376 | qmp_disable_command(&ga_commands, name, "the agent is in frozen state"); |
f22d85e9 | 377 | } |
f22d85e9 MR |
378 | } |
379 | ||
a31f0531 | 380 | /* [re-]enable all commands, except those explicitly blacklisted by user */ |
f0ccc00b | 381 | static void ga_enable_non_blacklisted(const 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 | |
781f2b3d | 526 | static int send_response(GAState *s, const QDict *rsp) |
48ff7a62 | 527 | { |
eab3a467 | 528 | GString *response; |
125b310e | 529 | GIOStatus status; |
48ff7a62 | 530 | |
844bd70b MAL |
531 | g_assert(s->channel); |
532 | ||
533 | if (!rsp) { | |
534 | return 0; | |
535 | } | |
48ff7a62 | 536 | |
eab3a467 MA |
537 | response = qobject_to_json(QOBJECT(rsp)); |
538 | if (!response) { | |
48ff7a62 MR |
539 | return -EINVAL; |
540 | } | |
541 | ||
3cf0bed8 MR |
542 | if (s->delimit_response) { |
543 | s->delimit_response = false; | |
eab3a467 | 544 | g_string_prepend_c(response, QGA_SENTINEL_BYTE); |
3cf0bed8 MR |
545 | } |
546 | ||
eab3a467 MA |
547 | g_string_append_c(response, '\n'); |
548 | status = ga_channel_write_all(s->channel, response->str, response->len); | |
549 | g_string_free(response, true); | |
125b310e MR |
550 | if (status != G_IO_STATUS_NORMAL) { |
551 | return -EIO; | |
48ff7a62 | 552 | } |
125b310e MR |
553 | |
554 | return 0; | |
48ff7a62 MR |
555 | } |
556 | ||
48ff7a62 | 557 | /* handle requests/control events coming in over the channel */ |
62815d85 | 558 | static void process_event(void *opaque, QObject *obj, Error *err) |
48ff7a62 | 559 | { |
62815d85 | 560 | GAState *s = opaque; |
781f2b3d | 561 | QDict *rsp; |
48ff7a62 MR |
562 | int ret; |
563 | ||
48ff7a62 | 564 | g_debug("process_event: called"); |
84a56f38 | 565 | assert(!obj != !err); |
ae7da1e5 | 566 | if (err) { |
781f2b3d MAL |
567 | rsp = qmp_error_response(err); |
568 | goto end; | |
48ff7a62 MR |
569 | } |
570 | ||
781f2b3d | 571 | g_debug("processing command"); |
41725fa7 | 572 | rsp = qmp_dispatch(&ga_commands, obj, false, NULL); |
ae7da1e5 | 573 | |
781f2b3d | 574 | end: |
ae7da1e5 MAL |
575 | ret = send_response(s, rsp); |
576 | if (ret < 0) { | |
577 | g_warning("error sending error response: %s", strerror(-ret)); | |
578 | } | |
579 | qobject_unref(rsp); | |
580 | qobject_unref(obj); | |
48ff7a62 MR |
581 | } |
582 | ||
125b310e MR |
583 | /* false return signals GAChannel to close the current client connection */ |
584 | static gboolean channel_event_cb(GIOCondition condition, gpointer data) | |
48ff7a62 MR |
585 | { |
586 | GAState *s = data; | |
0697e9ed | 587 | gchar buf[QGA_READ_COUNT_DEFAULT + 1]; |
48ff7a62 | 588 | gsize count; |
125b310e | 589 | GIOStatus status = ga_channel_read(s->channel, buf, QGA_READ_COUNT_DEFAULT, &count); |
48ff7a62 MR |
590 | switch (status) { |
591 | case G_IO_STATUS_ERROR: | |
125b310e | 592 | g_warning("error reading channel"); |
d951fada | 593 | stop_agent(s, false); |
48ff7a62 MR |
594 | return false; |
595 | case G_IO_STATUS_NORMAL: | |
125b310e | 596 | buf[count] = 0; |
48ff7a62 MR |
597 | g_debug("read data, count: %d, data: %s", (int)count, buf); |
598 | json_message_parser_feed(&s->parser, (char *)buf, (int)count); | |
125b310e MR |
599 | break; |
600 | case G_IO_STATUS_EOF: | |
601 | g_debug("received EOF"); | |
602 | if (!s->virtio) { | |
603 | return false; | |
604 | } | |
f5b79578 | 605 | /* fall through */ |
48ff7a62 MR |
606 | case G_IO_STATUS_AGAIN: |
607 | /* virtio causes us to spin here when no process is attached to | |
608 | * host-side chardev. sleep a bit to mitigate this | |
609 | */ | |
610 | if (s->virtio) { | |
4e8c4194 | 611 | g_usleep(G_USEC_PER_SEC / 10); |
48ff7a62 MR |
612 | } |
613 | return true; | |
48ff7a62 MR |
614 | default: |
615 | g_warning("unknown channel read status, closing"); | |
48ff7a62 MR |
616 | return false; |
617 | } | |
618 | return true; | |
619 | } | |
620 | ||
26de2296 SH |
621 | static gboolean channel_init(GAState *s, const gchar *method, const gchar *path, |
622 | int listen_fd) | |
48ff7a62 | 623 | { |
125b310e | 624 | GAChannelMethod channel_method; |
48ff7a62 | 625 | |
125b310e MR |
626 | if (strcmp(method, "virtio-serial") == 0) { |
627 | s->virtio = true; /* virtio requires special handling in some cases */ | |
628 | channel_method = GA_CHANNEL_VIRTIO_SERIAL; | |
629 | } else if (strcmp(method, "isa-serial") == 0) { | |
630 | channel_method = GA_CHANNEL_ISA_SERIAL; | |
631 | } else if (strcmp(method, "unix-listen") == 0) { | |
632 | channel_method = GA_CHANNEL_UNIX_LISTEN; | |
586ef5de SH |
633 | } else if (strcmp(method, "vsock-listen") == 0) { |
634 | channel_method = GA_CHANNEL_VSOCK_LISTEN; | |
48ff7a62 | 635 | } else { |
125b310e MR |
636 | g_critical("unsupported channel method/type: %s", method); |
637 | return false; | |
48ff7a62 MR |
638 | } |
639 | ||
26de2296 SH |
640 | s->channel = ga_channel_new(channel_method, path, listen_fd, |
641 | channel_event_cb, s); | |
125b310e MR |
642 | if (!s->channel) { |
643 | g_critical("failed to create guest agent channel"); | |
644 | return false; | |
645 | } | |
646 | ||
647 | return true; | |
48ff7a62 MR |
648 | } |
649 | ||
bc62fa03 | 650 | #ifdef _WIN32 |
b70d6afe BA |
651 | DWORD WINAPI handle_serial_device_events(DWORD type, LPVOID data) |
652 | { | |
653 | DWORD ret = NO_ERROR; | |
654 | PDEV_BROADCAST_HDR broadcast_header = (PDEV_BROADCAST_HDR)data; | |
655 | ||
656 | if (broadcast_header->dbch_devicetype == DBT_DEVTYP_DEVICEINTERFACE) { | |
657 | switch (type) { | |
658 | /* Device inserted */ | |
659 | case DBT_DEVICEARRIVAL: | |
660 | /* Start QEMU-ga's service */ | |
661 | if (!SetEvent(ga_state->wakeup_event)) { | |
662 | ret = GetLastError(); | |
663 | } | |
664 | break; | |
665 | /* Device removed */ | |
666 | case DBT_DEVICEQUERYREMOVE: | |
667 | case DBT_DEVICEREMOVEPENDING: | |
668 | case DBT_DEVICEREMOVECOMPLETE: | |
669 | /* Stop QEMU-ga's service */ | |
670 | if (!ResetEvent(ga_state->wakeup_event)) { | |
671 | ret = GetLastError(); | |
672 | } | |
673 | break; | |
674 | default: | |
675 | ret = ERROR_CALL_NOT_IMPLEMENTED; | |
676 | } | |
677 | } | |
678 | return ret; | |
679 | } | |
680 | ||
bc62fa03 MR |
681 | DWORD WINAPI service_ctrl_handler(DWORD ctrl, DWORD type, LPVOID data, |
682 | LPVOID ctx) | |
683 | { | |
684 | DWORD ret = NO_ERROR; | |
685 | GAService *service = &ga_state->service; | |
686 | ||
aaaed199 | 687 | switch (ctrl) { |
86dc17d4 AC |
688 | case SERVICE_CONTROL_STOP: |
689 | case SERVICE_CONTROL_SHUTDOWN: | |
690 | quit_handler(SIGTERM); | |
691 | SetEvent(ga_state->wakeup_event); | |
692 | service->status.dwCurrentState = SERVICE_STOP_PENDING; | |
693 | SetServiceStatus(service->status_handle, &service->status); | |
694 | break; | |
695 | case SERVICE_CONTROL_DEVICEEVENT: | |
696 | handle_serial_device_events(type, data); | |
697 | break; | |
bc62fa03 | 698 | |
86dc17d4 AC |
699 | default: |
700 | ret = ERROR_CALL_NOT_IMPLEMENTED; | |
bc62fa03 MR |
701 | } |
702 | return ret; | |
703 | } | |
704 | ||
705 | VOID WINAPI service_main(DWORD argc, TCHAR *argv[]) | |
706 | { | |
707 | GAService *service = &ga_state->service; | |
708 | ||
709 | service->status_handle = RegisterServiceCtrlHandlerEx(QGA_SERVICE_NAME, | |
710 | service_ctrl_handler, NULL); | |
711 | ||
712 | if (service->status_handle == 0) { | |
713 | g_critical("Failed to register extended requests function!\n"); | |
714 | return; | |
715 | } | |
716 | ||
717 | service->status.dwServiceType = SERVICE_WIN32; | |
718 | service->status.dwCurrentState = SERVICE_RUNNING; | |
719 | service->status.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN; | |
720 | service->status.dwWin32ExitCode = NO_ERROR; | |
721 | service->status.dwServiceSpecificExitCode = NO_ERROR; | |
722 | service->status.dwCheckPoint = 0; | |
723 | service->status.dwWaitHint = 0; | |
b70d6afe BA |
724 | DEV_BROADCAST_DEVICEINTERFACE notification_filter; |
725 | ZeroMemory(¬ification_filter, sizeof(notification_filter)); | |
726 | notification_filter.dbcc_devicetype = DBT_DEVTYP_DEVICEINTERFACE; | |
727 | notification_filter.dbcc_size = sizeof(DEV_BROADCAST_DEVICEINTERFACE); | |
728 | notification_filter.dbcc_classguid = GUID_VIOSERIAL_PORT; | |
729 | ||
730 | service->device_notification_handle = | |
731 | RegisterDeviceNotification(service->status_handle, | |
732 | ¬ification_filter, DEVICE_NOTIFY_SERVICE_HANDLE); | |
733 | if (!service->device_notification_handle) { | |
734 | g_critical("Failed to register device notification handle!\n"); | |
735 | return; | |
736 | } | |
bc62fa03 MR |
737 | SetServiceStatus(service->status_handle, &service->status); |
738 | ||
d88495a8 | 739 | run_agent(ga_state); |
bc62fa03 | 740 | |
b70d6afe | 741 | UnregisterDeviceNotification(service->device_notification_handle); |
bc62fa03 MR |
742 | service->status.dwCurrentState = SERVICE_STOPPED; |
743 | SetServiceStatus(service->status_handle, &service->status); | |
744 | } | |
745 | #endif | |
746 | ||
39097daf MR |
747 | static void set_persistent_state_defaults(GAPersistentState *pstate) |
748 | { | |
749 | g_assert(pstate); | |
750 | pstate->fd_counter = QGA_PSTATE_DEFAULT_FD_COUNTER; | |
751 | } | |
752 | ||
753 | static void persistent_state_from_keyfile(GAPersistentState *pstate, | |
754 | GKeyFile *keyfile) | |
755 | { | |
756 | g_assert(pstate); | |
757 | g_assert(keyfile); | |
758 | /* if any fields are missing, either because the file was tampered with | |
759 | * by agents of chaos, or because the field wasn't present at the time the | |
760 | * file was created, the best we can ever do is start over with the default | |
761 | * values. so load them now, and ignore any errors in accessing key-value | |
762 | * pairs | |
763 | */ | |
764 | set_persistent_state_defaults(pstate); | |
765 | ||
766 | if (g_key_file_has_key(keyfile, "global", "fd_counter", NULL)) { | |
767 | pstate->fd_counter = | |
4f306496 | 768 | g_key_file_get_integer(keyfile, "global", "fd_counter", NULL); |
39097daf MR |
769 | } |
770 | } | |
771 | ||
772 | static void persistent_state_to_keyfile(const GAPersistentState *pstate, | |
773 | GKeyFile *keyfile) | |
774 | { | |
775 | g_assert(pstate); | |
776 | g_assert(keyfile); | |
777 | ||
4f306496 | 778 | g_key_file_set_integer(keyfile, "global", "fd_counter", pstate->fd_counter); |
39097daf MR |
779 | } |
780 | ||
781 | static gboolean write_persistent_state(const GAPersistentState *pstate, | |
782 | const gchar *path) | |
783 | { | |
784 | GKeyFile *keyfile = g_key_file_new(); | |
785 | GError *gerr = NULL; | |
786 | gboolean ret = true; | |
787 | gchar *data = NULL; | |
788 | gsize data_len; | |
789 | ||
790 | g_assert(pstate); | |
791 | ||
792 | persistent_state_to_keyfile(pstate, keyfile); | |
793 | data = g_key_file_to_data(keyfile, &data_len, &gerr); | |
794 | if (gerr) { | |
795 | g_critical("failed to convert persistent state to string: %s", | |
796 | gerr->message); | |
797 | ret = false; | |
798 | goto out; | |
799 | } | |
800 | ||
801 | g_file_set_contents(path, data, data_len, &gerr); | |
802 | if (gerr) { | |
803 | g_critical("failed to write persistent state to %s: %s", | |
804 | path, gerr->message); | |
805 | ret = false; | |
806 | goto out; | |
807 | } | |
808 | ||
809 | out: | |
810 | if (gerr) { | |
811 | g_error_free(gerr); | |
812 | } | |
813 | if (keyfile) { | |
814 | g_key_file_free(keyfile); | |
815 | } | |
816 | g_free(data); | |
817 | return ret; | |
818 | } | |
819 | ||
820 | static gboolean read_persistent_state(GAPersistentState *pstate, | |
821 | const gchar *path, gboolean frozen) | |
822 | { | |
823 | GKeyFile *keyfile = NULL; | |
824 | GError *gerr = NULL; | |
825 | struct stat st; | |
826 | gboolean ret = true; | |
827 | ||
828 | g_assert(pstate); | |
829 | ||
830 | if (stat(path, &st) == -1) { | |
831 | /* it's okay if state file doesn't exist, but any other error | |
832 | * indicates a permissions issue or some other misconfiguration | |
833 | * that we likely won't be able to recover from. | |
834 | */ | |
835 | if (errno != ENOENT) { | |
836 | g_critical("unable to access state file at path %s: %s", | |
837 | path, strerror(errno)); | |
838 | ret = false; | |
839 | goto out; | |
840 | } | |
841 | ||
842 | /* file doesn't exist. initialize state to default values and | |
843 | * attempt to save now. (we could wait till later when we have | |
844 | * modified state we need to commit, but if there's a problem, | |
845 | * such as a missing parent directory, we want to catch it now) | |
846 | * | |
847 | * there is a potential scenario where someone either managed to | |
848 | * update the agent from a version that didn't use a key store | |
849 | * while qemu-ga thought the filesystem was frozen, or | |
850 | * deleted the key store prior to issuing a fsfreeze, prior | |
851 | * to restarting the agent. in this case we go ahead and defer | |
852 | * initial creation till we actually have modified state to | |
853 | * write, otherwise fail to recover from freeze. | |
854 | */ | |
855 | set_persistent_state_defaults(pstate); | |
856 | if (!frozen) { | |
857 | ret = write_persistent_state(pstate, path); | |
858 | if (!ret) { | |
859 | g_critical("unable to create state file at path %s", path); | |
860 | ret = false; | |
861 | goto out; | |
862 | } | |
863 | } | |
864 | ret = true; | |
865 | goto out; | |
866 | } | |
867 | ||
868 | keyfile = g_key_file_new(); | |
869 | g_key_file_load_from_file(keyfile, path, 0, &gerr); | |
870 | if (gerr) { | |
871 | g_critical("error loading persistent state from path: %s, %s", | |
872 | path, gerr->message); | |
873 | ret = false; | |
874 | goto out; | |
875 | } | |
876 | ||
877 | persistent_state_from_keyfile(pstate, keyfile); | |
878 | ||
879 | out: | |
880 | if (keyfile) { | |
881 | g_key_file_free(keyfile); | |
882 | } | |
883 | if (gerr) { | |
884 | g_error_free(gerr); | |
885 | } | |
886 | ||
887 | return ret; | |
888 | } | |
889 | ||
890 | int64_t ga_get_fd_handle(GAState *s, Error **errp) | |
891 | { | |
892 | int64_t handle; | |
893 | ||
894 | g_assert(s->pstate_filepath); | |
895 | /* we blacklist commands and avoid operations that potentially require | |
896 | * writing to disk when we're in a frozen state. this includes opening | |
897 | * new files, so we should never get here in that situation | |
898 | */ | |
899 | g_assert(!ga_is_frozen(s)); | |
900 | ||
901 | handle = s->pstate.fd_counter++; | |
ce7f7cc2 LC |
902 | |
903 | /* This should never happen on a reasonable timeframe, as guest-file-open | |
904 | * would have to be issued 2^63 times */ | |
905 | if (s->pstate.fd_counter == INT64_MAX) { | |
906 | abort(); | |
39097daf | 907 | } |
ce7f7cc2 | 908 | |
39097daf MR |
909 | if (!write_persistent_state(&s->pstate, s->pstate_filepath)) { |
910 | error_setg(errp, "failed to commit persistent state to disk"); | |
a903f40c | 911 | return -1; |
39097daf MR |
912 | } |
913 | ||
914 | return handle; | |
915 | } | |
916 | ||
f0ccc00b | 917 | static void ga_print_cmd(const QmpCommand *cmd, void *opaque) |
8dc4d915 MW |
918 | { |
919 | printf("%s\n", qmp_command_name(cmd)); | |
920 | } | |
921 | ||
4bca81ce | 922 | static GList *split_list(const gchar *str, const gchar *delim) |
23b42894 MAL |
923 | { |
924 | GList *list = NULL; | |
4bca81ce MAL |
925 | int i; |
926 | gchar **strv; | |
23b42894 | 927 | |
4bca81ce MAL |
928 | strv = g_strsplit(str, delim, -1); |
929 | for (i = 0; strv[i]; i++) { | |
930 | list = g_list_prepend(list, strv[i]); | |
23b42894 | 931 | } |
4bca81ce | 932 | g_free(strv); |
23b42894 MAL |
933 | |
934 | return list; | |
935 | } | |
936 | ||
0f4d3a49 | 937 | struct GAConfig { |
7a406694 MAL |
938 | char *channel_path; |
939 | char *method; | |
940 | char *log_filepath; | |
941 | char *pid_filepath; | |
ec0f694c | 942 | #ifdef CONFIG_FSFREEZE |
7a406694 | 943 | char *fsfreeze_hook; |
ec0f694c | 944 | #endif |
7a406694 | 945 | char *state_dir; |
bc62fa03 | 946 | #ifdef _WIN32 |
7a406694 | 947 | const char *service; |
bc62fa03 | 948 | #endif |
e236d060 | 949 | gchar *bliststr; /* blacklist may point to this string */ |
7a406694 MAL |
950 | GList *blacklist; |
951 | int daemonize; | |
952 | GLogLevelFlags log_level; | |
aeadcbb6 | 953 | int dumpconf; |
d951fada | 954 | bool retry_path; |
0f4d3a49 | 955 | }; |
7a406694 | 956 | |
e236d060 MAL |
957 | static void config_load(GAConfig *config) |
958 | { | |
959 | GError *gerr = NULL; | |
960 | GKeyFile *keyfile; | |
a9eacf8b | 961 | g_autofree char *conf = g_strdup(g_getenv("QGA_CONF")) ?: get_relocated_path(QGA_CONF_DEFAULT); |
e236d060 MAL |
962 | |
963 | /* read system config */ | |
964 | keyfile = g_key_file_new(); | |
8e34bf36 | 965 | if (!g_key_file_load_from_file(keyfile, conf, 0, &gerr)) { |
e236d060 MAL |
966 | goto end; |
967 | } | |
968 | if (g_key_file_has_key(keyfile, "general", "daemon", NULL)) { | |
969 | config->daemonize = | |
970 | g_key_file_get_boolean(keyfile, "general", "daemon", &gerr); | |
971 | } | |
972 | if (g_key_file_has_key(keyfile, "general", "method", NULL)) { | |
973 | config->method = | |
974 | g_key_file_get_string(keyfile, "general", "method", &gerr); | |
975 | } | |
976 | if (g_key_file_has_key(keyfile, "general", "path", NULL)) { | |
977 | config->channel_path = | |
978 | g_key_file_get_string(keyfile, "general", "path", &gerr); | |
979 | } | |
980 | if (g_key_file_has_key(keyfile, "general", "logfile", NULL)) { | |
981 | config->log_filepath = | |
982 | g_key_file_get_string(keyfile, "general", "logfile", &gerr); | |
983 | } | |
984 | if (g_key_file_has_key(keyfile, "general", "pidfile", NULL)) { | |
985 | config->pid_filepath = | |
986 | g_key_file_get_string(keyfile, "general", "pidfile", &gerr); | |
987 | } | |
988 | #ifdef CONFIG_FSFREEZE | |
989 | if (g_key_file_has_key(keyfile, "general", "fsfreeze-hook", NULL)) { | |
990 | config->fsfreeze_hook = | |
991 | g_key_file_get_string(keyfile, | |
992 | "general", "fsfreeze-hook", &gerr); | |
993 | } | |
994 | #endif | |
995 | if (g_key_file_has_key(keyfile, "general", "statedir", NULL)) { | |
996 | config->state_dir = | |
997 | g_key_file_get_string(keyfile, "general", "statedir", &gerr); | |
998 | } | |
999 | if (g_key_file_has_key(keyfile, "general", "verbose", NULL) && | |
1000 | g_key_file_get_boolean(keyfile, "general", "verbose", &gerr)) { | |
1001 | /* enable all log levels */ | |
1002 | config->log_level = G_LOG_LEVEL_MASK; | |
1003 | } | |
d951fada MR |
1004 | if (g_key_file_has_key(keyfile, "general", "retry-path", NULL)) { |
1005 | config->retry_path = | |
1006 | g_key_file_get_boolean(keyfile, "general", "retry-path", &gerr); | |
1007 | } | |
e236d060 MAL |
1008 | if (g_key_file_has_key(keyfile, "general", "blacklist", NULL)) { |
1009 | config->bliststr = | |
1010 | g_key_file_get_string(keyfile, "general", "blacklist", &gerr); | |
1011 | config->blacklist = g_list_concat(config->blacklist, | |
1012 | split_list(config->bliststr, ",")); | |
1013 | } | |
1014 | ||
1015 | end: | |
1016 | g_key_file_free(keyfile); | |
1017 | if (gerr && | |
1018 | !(gerr->domain == G_FILE_ERROR && gerr->code == G_FILE_ERROR_NOENT)) { | |
1019 | g_critical("error loading configuration from path: %s, %s", | |
a9eacf8b | 1020 | conf, gerr->message); |
e236d060 MAL |
1021 | exit(EXIT_FAILURE); |
1022 | } | |
1023 | g_clear_error(&gerr); | |
1024 | } | |
1025 | ||
aeadcbb6 MAL |
1026 | static gchar *list_join(GList *list, const gchar separator) |
1027 | { | |
1028 | GString *str = g_string_new(""); | |
1029 | ||
1030 | while (list) { | |
1031 | str = g_string_append(str, (gchar *)list->data); | |
1032 | list = g_list_next(list); | |
1033 | if (list) { | |
1034 | str = g_string_append_c(str, separator); | |
1035 | } | |
1036 | } | |
1037 | ||
1038 | return g_string_free(str, FALSE); | |
1039 | } | |
1040 | ||
1041 | static void config_dump(GAConfig *config) | |
1042 | { | |
1043 | GError *error = NULL; | |
1044 | GKeyFile *keyfile; | |
1045 | gchar *tmp; | |
1046 | ||
1047 | keyfile = g_key_file_new(); | |
1048 | g_assert(keyfile); | |
1049 | ||
1050 | g_key_file_set_boolean(keyfile, "general", "daemon", config->daemonize); | |
1051 | g_key_file_set_string(keyfile, "general", "method", config->method); | |
26de2296 SH |
1052 | if (config->channel_path) { |
1053 | g_key_file_set_string(keyfile, "general", "path", config->channel_path); | |
1054 | } | |
aeadcbb6 MAL |
1055 | if (config->log_filepath) { |
1056 | g_key_file_set_string(keyfile, "general", "logfile", | |
1057 | config->log_filepath); | |
1058 | } | |
1059 | g_key_file_set_string(keyfile, "general", "pidfile", config->pid_filepath); | |
1060 | #ifdef CONFIG_FSFREEZE | |
1061 | if (config->fsfreeze_hook) { | |
1062 | g_key_file_set_string(keyfile, "general", "fsfreeze-hook", | |
1063 | config->fsfreeze_hook); | |
1064 | } | |
1065 | #endif | |
1066 | g_key_file_set_string(keyfile, "general", "statedir", config->state_dir); | |
1067 | g_key_file_set_boolean(keyfile, "general", "verbose", | |
1068 | config->log_level == G_LOG_LEVEL_MASK); | |
d951fada MR |
1069 | g_key_file_set_boolean(keyfile, "general", "retry-path", |
1070 | config->retry_path); | |
aeadcbb6 MAL |
1071 | tmp = list_join(config->blacklist, ','); |
1072 | g_key_file_set_string(keyfile, "general", "blacklist", tmp); | |
1073 | g_free(tmp); | |
1074 | ||
1075 | tmp = g_key_file_to_data(keyfile, NULL, &error); | |
cbcd9ba1 MAL |
1076 | if (error) { |
1077 | g_critical("Failed to dump keyfile: %s", error->message); | |
1078 | g_clear_error(&error); | |
1079 | } else { | |
1080 | printf("%s", tmp); | |
1081 | } | |
aeadcbb6 MAL |
1082 | |
1083 | g_free(tmp); | |
1084 | g_key_file_free(keyfile); | |
1085 | } | |
1086 | ||
e236d060 | 1087 | static void config_parse(GAConfig *config, int argc, char **argv) |
7a406694 | 1088 | { |
d951fada | 1089 | const char *sopt = "hVvdm:p:l:f:F::b:s:t:Dr"; |
7a406694 | 1090 | int opt_ind = 0, ch; |
48ff7a62 MR |
1091 | const struct option lopt[] = { |
1092 | { "help", 0, NULL, 'h' }, | |
1093 | { "version", 0, NULL, 'V' }, | |
aeadcbb6 | 1094 | { "dump-conf", 0, NULL, 'D' }, |
bc62fa03 MR |
1095 | { "logfile", 1, NULL, 'l' }, |
1096 | { "pidfile", 1, NULL, 'f' }, | |
ec0f694c TS |
1097 | #ifdef CONFIG_FSFREEZE |
1098 | { "fsfreeze-hook", 2, NULL, 'F' }, | |
1099 | #endif | |
48ff7a62 | 1100 | { "verbose", 0, NULL, 'v' }, |
bc62fa03 MR |
1101 | { "method", 1, NULL, 'm' }, |
1102 | { "path", 1, NULL, 'p' }, | |
48ff7a62 | 1103 | { "daemonize", 0, NULL, 'd' }, |
bc62fa03 MR |
1104 | { "blacklist", 1, NULL, 'b' }, |
1105 | #ifdef _WIN32 | |
1106 | { "service", 1, NULL, 's' }, | |
f22d85e9 | 1107 | #endif |
f789aa7b | 1108 | { "statedir", 1, NULL, 't' }, |
d951fada | 1109 | { "retry-path", 0, NULL, 'r' }, |
48ff7a62 MR |
1110 | { NULL, 0, NULL, 0 } |
1111 | }; | |
48ff7a62 MR |
1112 | |
1113 | while ((ch = getopt_long(argc, argv, sopt, lopt, &opt_ind)) != -1) { | |
1114 | switch (ch) { | |
1115 | case 'm': | |
e236d060 | 1116 | g_free(config->method); |
7a406694 | 1117 | config->method = g_strdup(optarg); |
48ff7a62 MR |
1118 | break; |
1119 | case 'p': | |
e236d060 | 1120 | g_free(config->channel_path); |
7a406694 | 1121 | config->channel_path = g_strdup(optarg); |
48ff7a62 MR |
1122 | break; |
1123 | case 'l': | |
e236d060 | 1124 | g_free(config->log_filepath); |
7a406694 | 1125 | config->log_filepath = g_strdup(optarg); |
48ff7a62 MR |
1126 | break; |
1127 | case 'f': | |
e236d060 | 1128 | g_free(config->pid_filepath); |
7a406694 | 1129 | config->pid_filepath = g_strdup(optarg); |
48ff7a62 | 1130 | break; |
ec0f694c TS |
1131 | #ifdef CONFIG_FSFREEZE |
1132 | case 'F': | |
e236d060 | 1133 | g_free(config->fsfreeze_hook); |
a9eacf8b | 1134 | config->fsfreeze_hook = optarg ? g_strdup(optarg) : get_relocated_path(QGA_FSFREEZE_HOOK_DEFAULT); |
ec0f694c TS |
1135 | break; |
1136 | #endif | |
f789aa7b | 1137 | case 't': |
e236d060 | 1138 | g_free(config->state_dir); |
7a406694 | 1139 | config->state_dir = g_strdup(optarg); |
2e38d990 | 1140 | break; |
48ff7a62 MR |
1141 | case 'v': |
1142 | /* enable all log levels */ | |
7a406694 | 1143 | config->log_level = G_LOG_LEVEL_MASK; |
48ff7a62 MR |
1144 | break; |
1145 | case 'V': | |
8efacc43 | 1146 | printf("QEMU Guest Agent %s\n", QEMU_VERSION); |
c6c84523 | 1147 | exit(EXIT_SUCCESS); |
48ff7a62 | 1148 | case 'd': |
7a406694 | 1149 | config->daemonize = 1; |
48ff7a62 | 1150 | break; |
aeadcbb6 MAL |
1151 | case 'D': |
1152 | config->dumpconf = 1; | |
1153 | break; | |
d951fada MR |
1154 | case 'r': |
1155 | config->retry_path = true; | |
1156 | break; | |
abd6cf6d | 1157 | case 'b': { |
c8057f95 | 1158 | if (is_help_option(optarg)) { |
1527badb | 1159 | qmp_for_each_command(&ga_commands, ga_print_cmd, NULL); |
c6c84523 | 1160 | exit(EXIT_SUCCESS); |
abd6cf6d | 1161 | } |
7a406694 MAL |
1162 | config->blacklist = g_list_concat(config->blacklist, |
1163 | split_list(optarg, ",")); | |
abd6cf6d MR |
1164 | break; |
1165 | } | |
bc62fa03 MR |
1166 | #ifdef _WIN32 |
1167 | case 's': | |
7a406694 MAL |
1168 | config->service = optarg; |
1169 | if (strcmp(config->service, "install") == 0) { | |
f311f2c2 | 1170 | if (ga_install_vss_provider()) { |
c6c84523 | 1171 | exit(EXIT_FAILURE); |
f311f2c2 | 1172 | } |
7a406694 MAL |
1173 | if (ga_install_service(config->channel_path, |
1174 | config->log_filepath, config->state_dir)) { | |
c6c84523 | 1175 | exit(EXIT_FAILURE); |
f311f2c2 | 1176 | } |
c6c84523 | 1177 | exit(EXIT_SUCCESS); |
7a406694 | 1178 | } else if (strcmp(config->service, "uninstall") == 0) { |
f311f2c2 | 1179 | ga_uninstall_vss_provider(); |
c6c84523 | 1180 | exit(ga_uninstall_service()); |
7a406694 | 1181 | } else if (strcmp(config->service, "vss-install") == 0) { |
5e031072 | 1182 | if (ga_install_vss_provider()) { |
c6c84523 | 1183 | exit(EXIT_FAILURE); |
5e031072 | 1184 | } |
c6c84523 | 1185 | exit(EXIT_SUCCESS); |
7a406694 | 1186 | } else if (strcmp(config->service, "vss-uninstall") == 0) { |
5e031072 | 1187 | ga_uninstall_vss_provider(); |
c6c84523 | 1188 | exit(EXIT_SUCCESS); |
bc62fa03 MR |
1189 | } else { |
1190 | printf("Unknown service command.\n"); | |
c6c84523 | 1191 | exit(EXIT_FAILURE); |
bc62fa03 MR |
1192 | } |
1193 | break; | |
1194 | #endif | |
48ff7a62 MR |
1195 | case 'h': |
1196 | usage(argv[0]); | |
c6c84523 | 1197 | exit(EXIT_SUCCESS); |
48ff7a62 MR |
1198 | case '?': |
1199 | g_print("Unknown option, try '%s --help' for more information.\n", | |
1200 | argv[0]); | |
c6c84523 | 1201 | exit(EXIT_FAILURE); |
48ff7a62 MR |
1202 | } |
1203 | } | |
7a406694 MAL |
1204 | } |
1205 | ||
1206 | static void config_free(GAConfig *config) | |
1207 | { | |
1208 | g_free(config->method); | |
1209 | g_free(config->log_filepath); | |
1210 | g_free(config->pid_filepath); | |
1211 | g_free(config->state_dir); | |
1212 | g_free(config->channel_path); | |
e236d060 | 1213 | g_free(config->bliststr); |
7a406694 MAL |
1214 | #ifdef CONFIG_FSFREEZE |
1215 | g_free(config->fsfreeze_hook); | |
1216 | #endif | |
2aa67a91 | 1217 | g_list_free_full(config->blacklist, g_free); |
7a406694 MAL |
1218 | g_free(config); |
1219 | } | |
1220 | ||
e3d31039 | 1221 | static bool check_is_frozen(GAState *s) |
7a406694 | 1222 | { |
f789aa7b MR |
1223 | #ifndef _WIN32 |
1224 | /* check if a previous instance of qemu-ga exited with filesystems' state | |
1225 | * marked as frozen. this could be a stale value (a non-qemu-ga process | |
1226 | * or reboot may have since unfrozen them), but better to require an | |
1227 | * uneeded unfreeze than to risk hanging on start-up | |
1228 | */ | |
1229 | struct stat st; | |
1230 | if (stat(s->state_filepath_isfrozen, &st) == -1) { | |
1231 | /* it's okay if the file doesn't exist, but if we can't access for | |
1232 | * some other reason, such as permissions, there's a configuration | |
1233 | * that needs to be addressed. so just bail now before we get into | |
1234 | * more trouble later | |
1235 | */ | |
1236 | if (errno != ENOENT) { | |
1237 | g_critical("unable to access state file at path %s: %s", | |
1238 | s->state_filepath_isfrozen, strerror(errno)); | |
1239 | return EXIT_FAILURE; | |
1240 | } | |
1241 | } else { | |
1242 | g_warning("previous instance appears to have exited with frozen" | |
1243 | " filesystems. deferring logging/pidfile creation and" | |
1244 | " disabling non-fsfreeze-safe commands until" | |
1245 | " guest-fsfreeze-thaw is issued, or filesystems are" | |
1246 | " manually unfrozen and the file %s is removed", | |
1247 | s->state_filepath_isfrozen); | |
e3d31039 MAL |
1248 | return true; |
1249 | } | |
1250 | #endif | |
1251 | return false; | |
1252 | } | |
1253 | ||
0f4d3a49 | 1254 | static GAState *initialize_agent(GAConfig *config, int socket_activation) |
e3d31039 | 1255 | { |
50d5b3c4 MR |
1256 | GAState *s = g_new0(GAState, 1); |
1257 | ||
1258 | g_assert(ga_state == NULL); | |
1259 | ||
1260 | s->log_level = config->log_level; | |
1261 | s->log_file = stderr; | |
1262 | #ifdef CONFIG_FSFREEZE | |
1263 | s->fsfreeze_hook = config->fsfreeze_hook; | |
1264 | #endif | |
1265 | s->pstate_filepath = g_strdup_printf("%s/qga.state", config->state_dir); | |
1266 | s->state_filepath_isfrozen = g_strdup_printf("%s/qga.state.isfrozen", | |
1267 | config->state_dir); | |
1268 | s->frozen = check_is_frozen(s); | |
e3d31039 MAL |
1269 | |
1270 | g_log_set_default_handler(ga_log, s); | |
1271 | g_log_set_fatal_mask(NULL, G_LOG_LEVEL_ERROR); | |
1272 | ga_enable_logging(s); | |
1273 | ||
323f3a8f KK |
1274 | g_debug("Guest agent version %s started", QEMU_FULL_VERSION); |
1275 | ||
e3d31039 MAL |
1276 | #ifdef _WIN32 |
1277 | /* On win32 the state directory is application specific (be it the default | |
1278 | * or a user override). We got past the command line parsing; let's create | |
1279 | * the directory (with any intermediate directories). If we run into an | |
1280 | * error later on, we won't try to clean up the directory, it is considered | |
1281 | * persistent. | |
1282 | */ | |
1283 | if (g_mkdir_with_parents(config->state_dir, S_IRWXU) == -1) { | |
1284 | g_critical("unable to create (an ancestor of) the state directory" | |
1285 | " '%s': %s", config->state_dir, strerror(errno)); | |
50d5b3c4 | 1286 | return NULL; |
f789aa7b MR |
1287 | } |
1288 | #endif | |
1289 | ||
1290 | if (ga_is_frozen(s)) { | |
7a406694 | 1291 | if (config->daemonize) { |
8e8be266 | 1292 | /* delay opening/locking of pidfile till filesystems are unfrozen */ |
7a406694 | 1293 | s->deferred_options.pid_filepath = config->pid_filepath; |
f789aa7b MR |
1294 | become_daemon(NULL); |
1295 | } | |
7a406694 | 1296 | if (config->log_filepath) { |
f789aa7b | 1297 | /* delay opening the log file till filesystems are unfrozen */ |
7a406694 | 1298 | s->deferred_options.log_filepath = config->log_filepath; |
f789aa7b MR |
1299 | } |
1300 | ga_disable_logging(s); | |
1527badb | 1301 | qmp_for_each_command(&ga_commands, ga_disable_non_whitelisted, NULL); |
f789aa7b | 1302 | } else { |
7a406694 MAL |
1303 | if (config->daemonize) { |
1304 | become_daemon(config->pid_filepath); | |
f789aa7b | 1305 | } |
7a406694 MAL |
1306 | if (config->log_filepath) { |
1307 | FILE *log_file = ga_open_logfile(config->log_filepath); | |
6c615ec5 | 1308 | if (!log_file) { |
f789aa7b MR |
1309 | g_critical("unable to open specified log file: %s", |
1310 | strerror(errno)); | |
50d5b3c4 | 1311 | return NULL; |
f789aa7b | 1312 | } |
6c615ec5 | 1313 | s->log_file = log_file; |
f789aa7b MR |
1314 | } |
1315 | } | |
1316 | ||
39097daf MR |
1317 | /* load persistent state from disk */ |
1318 | if (!read_persistent_state(&s->pstate, | |
1319 | s->pstate_filepath, | |
1320 | ga_is_frozen(s))) { | |
1321 | g_critical("failed to load persistent state"); | |
50d5b3c4 | 1322 | return NULL; |
39097daf MR |
1323 | } |
1324 | ||
7a406694 MAL |
1325 | config->blacklist = ga_command_blacklist_init(config->blacklist); |
1326 | if (config->blacklist) { | |
1327 | GList *l = config->blacklist; | |
1328 | s->blacklist = config->blacklist; | |
f22d85e9 | 1329 | do { |
7a406694 | 1330 | g_debug("disabling command: %s", (char *)l->data); |
c98939da | 1331 | qmp_disable_command(&ga_commands, l->data, NULL); |
7a406694 MAL |
1332 | l = g_list_next(l); |
1333 | } while (l); | |
f22d85e9 | 1334 | } |
e3d4d252 MR |
1335 | s->command_state = ga_command_state_new(); |
1336 | ga_command_state_init(s, s->command_state); | |
1337 | ga_command_state_init_all(s->command_state); | |
62815d85 | 1338 | json_message_parser_init(&s->parser, process_event, s, NULL); |
f8837b37 | 1339 | |
d8ca685a | 1340 | #ifndef _WIN32 |
125b310e MR |
1341 | if (!register_signal_handlers()) { |
1342 | g_critical("failed to register signal handlers"); | |
50d5b3c4 | 1343 | return NULL; |
125b310e | 1344 | } |
d8ca685a | 1345 | #endif |
48ff7a62 | 1346 | |
125b310e | 1347 | s->main_loop = g_main_loop_new(NULL, false); |
26de2296 | 1348 | |
0f4d3a49 MR |
1349 | s->config = config; |
1350 | s->socket_activation = socket_activation; | |
b70d6afe BA |
1351 | |
1352 | #ifdef _WIN32 | |
1353 | s->wakeup_event = CreateEvent(NULL, TRUE, FALSE, TEXT("WakeUp")); | |
1354 | if (s->wakeup_event == NULL) { | |
1355 | g_critical("CreateEvent failed"); | |
1356 | return NULL; | |
1357 | } | |
1358 | #endif | |
1359 | ||
50d5b3c4 MR |
1360 | ga_state = s; |
1361 | return s; | |
1362 | } | |
1363 | ||
1364 | static void cleanup_agent(GAState *s) | |
1365 | { | |
b70d6afe BA |
1366 | #ifdef _WIN32 |
1367 | CloseHandle(s->wakeup_event); | |
1368 | #endif | |
50d5b3c4 MR |
1369 | if (s->command_state) { |
1370 | ga_command_state_cleanup_all(s->command_state); | |
1371 | ga_command_state_free(s->command_state); | |
1372 | json_message_parser_destroy(&s->parser); | |
1373 | } | |
50d5b3c4 MR |
1374 | g_free(s->pstate_filepath); |
1375 | g_free(s->state_filepath_isfrozen); | |
1376 | if (s->main_loop) { | |
1377 | g_main_loop_unref(s->main_loop); | |
1378 | } | |
1379 | g_free(s); | |
1380 | ga_state = NULL; | |
1381 | } | |
1382 | ||
d951fada | 1383 | static int run_agent_once(GAState *s) |
50d5b3c4 | 1384 | { |
0f4d3a49 MR |
1385 | if (!channel_init(s, s->config->method, s->config->channel_path, |
1386 | s->socket_activation ? FIRST_SOCKET_ACTIVATION_FD : -1)) { | |
125b310e | 1387 | g_critical("failed to initialize guest agent channel"); |
e3d31039 | 1388 | return EXIT_FAILURE; |
125b310e | 1389 | } |
d88495a8 | 1390 | |
48ff7a62 MR |
1391 | g_main_loop_run(ga_state->main_loop); |
1392 | ||
d951fada MR |
1393 | if (s->channel) { |
1394 | ga_channel_free(s->channel); | |
1395 | } | |
1396 | ||
e3d31039 MAL |
1397 | return EXIT_SUCCESS; |
1398 | } | |
48ff7a62 | 1399 | |
b70d6afe BA |
1400 | static void wait_for_channel_availability(GAState *s) |
1401 | { | |
1402 | g_warning("waiting for channel path..."); | |
1403 | #ifndef _WIN32 | |
1404 | sleep(QGA_RETRY_INTERVAL); | |
1405 | #else | |
1406 | DWORD dwWaitResult; | |
1407 | ||
1408 | dwWaitResult = WaitForSingleObject(s->wakeup_event, INFINITE); | |
1409 | ||
1410 | switch (dwWaitResult) { | |
1411 | case WAIT_OBJECT_0: | |
1412 | break; | |
1413 | case WAIT_TIMEOUT: | |
1414 | break; | |
1415 | default: | |
1416 | g_critical("WaitForSingleObject failed"); | |
1417 | } | |
1418 | #endif | |
1419 | } | |
1420 | ||
d951fada MR |
1421 | static int run_agent(GAState *s) |
1422 | { | |
1423 | int ret = EXIT_SUCCESS; | |
1424 | ||
1425 | s->force_exit = false; | |
1426 | ||
1427 | do { | |
1428 | ret = run_agent_once(s); | |
1429 | if (s->config->retry_path && !s->force_exit) { | |
1430 | g_warning("agent stopped unexpectedly, restarting..."); | |
b70d6afe | 1431 | wait_for_channel_availability(s); |
d951fada MR |
1432 | } |
1433 | } while (s->config->retry_path && !s->force_exit); | |
1434 | ||
1435 | return ret; | |
1436 | } | |
1437 | ||
1438 | static void stop_agent(GAState *s, bool requested) | |
1439 | { | |
1440 | if (!s->force_exit) { | |
1441 | s->force_exit = requested; | |
1442 | } | |
1443 | ||
1444 | if (g_main_loop_is_running(s->main_loop)) { | |
1445 | g_main_loop_quit(s->main_loop); | |
1446 | } | |
1447 | } | |
1448 | ||
e3d31039 MAL |
1449 | int main(int argc, char **argv) |
1450 | { | |
1451 | int ret = EXIT_SUCCESS; | |
50d5b3c4 | 1452 | GAState *s; |
e236d060 | 1453 | GAConfig *config = g_new0(GAConfig, 1); |
53fabd4b | 1454 | int socket_activation; |
e3d31039 | 1455 | |
6eaeae37 MAL |
1456 | config->log_level = G_LOG_LEVEL_ERROR | G_LOG_LEVEL_CRITICAL; |
1457 | ||
a9eacf8b | 1458 | qemu_init_exec_dir(argv[0]); |
1527badb | 1459 | qga_qmp_init_marshal(&ga_commands); |
e3d31039 MAL |
1460 | |
1461 | init_dfl_pathnames(); | |
e236d060 MAL |
1462 | config_load(config); |
1463 | config_parse(config, argc, argv); | |
e3d31039 MAL |
1464 | |
1465 | if (config->pid_filepath == NULL) { | |
1466 | config->pid_filepath = g_strdup(dfl_pathnames.pidfile); | |
1467 | } | |
1468 | ||
1469 | if (config->state_dir == NULL) { | |
1470 | config->state_dir = g_strdup(dfl_pathnames.state_dir); | |
1471 | } | |
1472 | ||
1473 | if (config->method == NULL) { | |
1474 | config->method = g_strdup("virtio-serial"); | |
125b310e | 1475 | } |
125b310e | 1476 | |
53fabd4b PB |
1477 | socket_activation = check_socket_activation(); |
1478 | if (socket_activation > 1) { | |
1479 | g_critical("qemu-ga only supports listening on one socket"); | |
1480 | ret = EXIT_FAILURE; | |
1481 | goto end; | |
1482 | } | |
1483 | if (socket_activation) { | |
bd269ebc | 1484 | SocketAddress *addr; |
26de2296 SH |
1485 | |
1486 | g_free(config->method); | |
1487 | g_free(config->channel_path); | |
1488 | config->method = NULL; | |
1489 | config->channel_path = NULL; | |
1490 | ||
53fabd4b | 1491 | addr = socket_local_address(FIRST_SOCKET_ACTIVATION_FD, NULL); |
26de2296 | 1492 | if (addr) { |
bd269ebc | 1493 | if (addr->type == SOCKET_ADDRESS_TYPE_UNIX) { |
26de2296 | 1494 | config->method = g_strdup("unix-listen"); |
bd269ebc | 1495 | } else if (addr->type == SOCKET_ADDRESS_TYPE_VSOCK) { |
26de2296 SH |
1496 | config->method = g_strdup("vsock-listen"); |
1497 | } | |
1498 | ||
bd269ebc | 1499 | qapi_free_SocketAddress(addr); |
26de2296 SH |
1500 | } |
1501 | ||
1502 | if (!config->method) { | |
1503 | g_critical("unsupported listen fd type"); | |
1504 | ret = EXIT_FAILURE; | |
1505 | goto end; | |
1506 | } | |
1507 | } else if (config->channel_path == NULL) { | |
e3d31039 MAL |
1508 | if (strcmp(config->method, "virtio-serial") == 0) { |
1509 | /* try the default path for the virtio-serial port */ | |
1510 | config->channel_path = g_strdup(QGA_VIRTIO_PATH_DEFAULT); | |
1511 | } else if (strcmp(config->method, "isa-serial") == 0) { | |
1512 | /* try the default path for the serial port - COM1 */ | |
1513 | config->channel_path = g_strdup(QGA_SERIAL_PATH_DEFAULT); | |
1514 | } else { | |
1515 | g_critical("must specify a path for this channel"); | |
1516 | ret = EXIT_FAILURE; | |
1517 | goto end; | |
1518 | } | |
1519 | } | |
1520 | ||
aeadcbb6 MAL |
1521 | if (config->dumpconf) { |
1522 | config_dump(config); | |
1523 | goto end; | |
1524 | } | |
1525 | ||
0f4d3a49 | 1526 | s = initialize_agent(config, socket_activation); |
50d5b3c4 MR |
1527 | if (!s) { |
1528 | g_critical("error initializing guest agent"); | |
1529 | goto end; | |
1530 | } | |
d88495a8 MR |
1531 | |
1532 | #ifdef _WIN32 | |
1533 | if (config->daemonize) { | |
1534 | SERVICE_TABLE_ENTRY service_table[] = { | |
1535 | { (char *)QGA_SERVICE_NAME, service_main }, { NULL, NULL } }; | |
1536 | StartServiceCtrlDispatcher(service_table); | |
1537 | } else { | |
1538 | ret = run_agent(s); | |
1539 | } | |
1540 | #else | |
0f4d3a49 | 1541 | ret = run_agent(s); |
d88495a8 MR |
1542 | #endif |
1543 | ||
50d5b3c4 | 1544 | cleanup_agent(s); |
e3d31039 MAL |
1545 | |
1546 | end: | |
7a406694 MAL |
1547 | if (config->daemonize) { |
1548 | unlink(config->pid_filepath); | |
125b310e | 1549 | } |
2e38d990 | 1550 | |
7a406694 | 1551 | config_free(config); |
2e38d990 | 1552 | |
e3d31039 | 1553 | return ret; |
48ff7a62 | 1554 | } |