Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 1 | /* |
| 2 | * QEMU Guest Agent |
| 3 | * |
| 4 | * Copyright IBM Corp. 2011 |
| 5 | * |
| 6 | * Authors: |
| 7 | * Adam Litke <aglitke@linux.vnet.ibm.com> |
| 8 | * Michael Roth <mdroth@linux.vnet.ibm.com> |
| 9 | * |
| 10 | * This work is licensed under the terms of the GNU GPL, version 2 or later. |
| 11 | * See the COPYING file in the top-level directory. |
| 12 | */ |
| 13 | #include <stdlib.h> |
| 14 | #include <stdio.h> |
| 15 | #include <stdbool.h> |
| 16 | #include <glib.h> |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 17 | #include <getopt.h> |
Michael Roth | 39097da | 2013-03-01 11:40:27 -0600 | [diff] [blame] | 18 | #include <glib/gstdio.h> |
Michael Roth | d8ca685 | 2012-01-19 22:04:34 -0600 | [diff] [blame] | 19 | #ifndef _WIN32 |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 20 | #include <syslog.h> |
Luiz Capitulino | 11d0f12 | 2012-02-28 11:03:03 -0300 | [diff] [blame] | 21 | #include <sys/wait.h> |
Michael Roth | f789aa7 | 2012-04-18 16:28:01 -0500 | [diff] [blame] | 22 | #include <sys/stat.h> |
Michael Roth | d8ca685 | 2012-01-19 22:04:34 -0600 | [diff] [blame] | 23 | #endif |
Paolo Bonzini | 7b1b5d1 | 2012-12-17 18:19:43 +0100 | [diff] [blame] | 24 | #include "qapi/qmp/json-streamer.h" |
| 25 | #include "qapi/qmp/json-parser.h" |
| 26 | #include "qapi/qmp/qint.h" |
| 27 | #include "qapi/qmp/qjson.h" |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 28 | #include "qga/guest-agent-core.h" |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 29 | #include "qemu/module.h" |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 30 | #include "signal.h" |
Paolo Bonzini | 7b1b5d1 | 2012-12-17 18:19:43 +0100 | [diff] [blame] | 31 | #include "qapi/qmp/qerror.h" |
| 32 | #include "qapi/qmp/dispatch.h" |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 33 | #include "qga/channel.h" |
Michael Roth | 39097da | 2013-03-01 11:40:27 -0600 | [diff] [blame] | 34 | #include "qemu/bswap.h" |
Michael Roth | bc62fa0 | 2012-01-21 16:42:27 -0600 | [diff] [blame] | 35 | #ifdef _WIN32 |
| 36 | #include "qga/service-win32.h" |
| 37 | #include <windows.h> |
| 38 | #endif |
Tomoki Sekiyama | ec0f694 | 2012-12-12 12:55:55 +0900 | [diff] [blame] | 39 | #ifdef __linux__ |
| 40 | #include <linux/fs.h> |
| 41 | #ifdef FIFREEZE |
| 42 | #define CONFIG_FSFREEZE |
| 43 | #endif |
| 44 | #endif |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 45 | |
Michael Roth | 7868e26 | 2012-01-20 19:01:30 -0600 | [diff] [blame] | 46 | #ifndef _WIN32 |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 47 | #define QGA_VIRTIO_PATH_DEFAULT "/dev/virtio-ports/org.qemu.guest_agent.0" |
Laszlo Ersek | c394ecb | 2013-05-18 06:31:49 +0200 | [diff] [blame] | 48 | #define QGA_STATE_RELATIVE_DIR "run" |
Michael Roth | 7868e26 | 2012-01-20 19:01:30 -0600 | [diff] [blame] | 49 | #else |
| 50 | #define QGA_VIRTIO_PATH_DEFAULT "\\\\.\\Global\\org.qemu.guest_agent.0" |
Laszlo Ersek | c394ecb | 2013-05-18 06:31:49 +0200 | [diff] [blame] | 51 | #define QGA_STATE_RELATIVE_DIR "qemu-ga" |
Michael Roth | 7868e26 | 2012-01-20 19:01:30 -0600 | [diff] [blame] | 52 | #endif |
Tomoki Sekiyama | ec0f694 | 2012-12-12 12:55:55 +0900 | [diff] [blame] | 53 | #ifdef CONFIG_FSFREEZE |
| 54 | #define QGA_FSFREEZE_HOOK_DEFAULT CONFIG_QEMU_CONFDIR "/fsfreeze-hook" |
| 55 | #endif |
Michael Roth | 3cf0bed | 2012-02-07 13:56:48 -0600 | [diff] [blame] | 56 | #define QGA_SENTINEL_BYTE 0xFF |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 57 | |
Laszlo Ersek | c394ecb | 2013-05-18 06:31:49 +0200 | [diff] [blame] | 58 | static struct { |
| 59 | const char *state_dir; |
| 60 | const char *pidfile; |
| 61 | } dfl_pathnames; |
| 62 | |
Michael Roth | 39097da | 2013-03-01 11:40:27 -0600 | [diff] [blame] | 63 | typedef struct GAPersistentState { |
| 64 | #define QGA_PSTATE_DEFAULT_FD_COUNTER 1000 |
| 65 | int64_t fd_counter; |
| 66 | } GAPersistentState; |
| 67 | |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 68 | struct GAState { |
| 69 | JSONMessageParser parser; |
| 70 | GMainLoop *main_loop; |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 71 | GAChannel *channel; |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 72 | bool virtio; /* fastpath to check for virtio to deal with poll() quirks */ |
| 73 | GACommandState *command_state; |
| 74 | GLogLevelFlags log_level; |
| 75 | FILE *log_file; |
| 76 | bool logging_enabled; |
Michael Roth | bc62fa0 | 2012-01-21 16:42:27 -0600 | [diff] [blame] | 77 | #ifdef _WIN32 |
| 78 | GAService service; |
| 79 | #endif |
Michael Roth | 3cf0bed | 2012-02-07 13:56:48 -0600 | [diff] [blame] | 80 | bool delimit_response; |
Michael Roth | f22d85e | 2012-04-17 19:01:45 -0500 | [diff] [blame] | 81 | bool frozen; |
| 82 | GList *blacklist; |
Michael Roth | f789aa7 | 2012-04-18 16:28:01 -0500 | [diff] [blame] | 83 | const char *state_filepath_isfrozen; |
| 84 | struct { |
| 85 | const char *log_filepath; |
| 86 | const char *pid_filepath; |
| 87 | } deferred_options; |
Tomoki Sekiyama | ec0f694 | 2012-12-12 12:55:55 +0900 | [diff] [blame] | 88 | #ifdef CONFIG_FSFREEZE |
| 89 | const char *fsfreeze_hook; |
| 90 | #endif |
Michael Roth | 39097da | 2013-03-01 11:40:27 -0600 | [diff] [blame] | 91 | const gchar *pstate_filepath; |
| 92 | GAPersistentState pstate; |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 93 | }; |
| 94 | |
Michael Roth | 3cf0bed | 2012-02-07 13:56:48 -0600 | [diff] [blame] | 95 | struct GAState *ga_state; |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 96 | |
Michael Roth | f22d85e | 2012-04-17 19:01:45 -0500 | [diff] [blame] | 97 | /* commands that are safe to issue while filesystems are frozen */ |
| 98 | static const char *ga_freeze_whitelist[] = { |
| 99 | "guest-ping", |
| 100 | "guest-info", |
| 101 | "guest-sync", |
Michael Roth | c5dcb6a | 2013-03-01 11:49:38 -0600 | [diff] [blame] | 102 | "guest-sync-delimited", |
Michael Roth | f22d85e | 2012-04-17 19:01:45 -0500 | [diff] [blame] | 103 | "guest-fsfreeze-status", |
| 104 | "guest-fsfreeze-thaw", |
| 105 | NULL |
| 106 | }; |
| 107 | |
Michael Roth | bc62fa0 | 2012-01-21 16:42:27 -0600 | [diff] [blame] | 108 | #ifdef _WIN32 |
| 109 | DWORD WINAPI service_ctrl_handler(DWORD ctrl, DWORD type, LPVOID data, |
| 110 | LPVOID ctx); |
| 111 | VOID WINAPI service_main(DWORD argc, TCHAR *argv[]); |
| 112 | #endif |
| 113 | |
Laszlo Ersek | c394ecb | 2013-05-18 06:31:49 +0200 | [diff] [blame] | 114 | static void |
| 115 | init_dfl_pathnames(void) |
| 116 | { |
| 117 | g_assert(dfl_pathnames.state_dir == NULL); |
| 118 | g_assert(dfl_pathnames.pidfile == NULL); |
| 119 | dfl_pathnames.state_dir = qemu_get_local_state_pathname( |
| 120 | QGA_STATE_RELATIVE_DIR); |
| 121 | dfl_pathnames.pidfile = qemu_get_local_state_pathname( |
| 122 | QGA_STATE_RELATIVE_DIR G_DIR_SEPARATOR_S "qemu-ga.pid"); |
| 123 | } |
| 124 | |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 125 | static void quit_handler(int sig) |
| 126 | { |
Michael Roth | f22d85e | 2012-04-17 19:01:45 -0500 | [diff] [blame] | 127 | /* if we're frozen, don't exit unless we're absolutely forced to, |
| 128 | * because it's basically impossible for graceful exit to complete |
| 129 | * unless all log/pid files are on unfreezable filesystems. there's |
| 130 | * also a very likely chance killing the agent before unfreezing |
| 131 | * the filesystems is a mistake (or will be viewed as one later). |
| 132 | */ |
| 133 | if (ga_is_frozen(ga_state)) { |
| 134 | return; |
| 135 | } |
Stefan Weil | 2542bfd | 2011-08-28 21:45:40 +0200 | [diff] [blame] | 136 | g_debug("received signal num %d, quitting", sig); |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 137 | |
| 138 | if (g_main_loop_is_running(ga_state->main_loop)) { |
| 139 | g_main_loop_quit(ga_state->main_loop); |
| 140 | } |
| 141 | } |
| 142 | |
Michael Roth | bc62fa0 | 2012-01-21 16:42:27 -0600 | [diff] [blame] | 143 | #ifndef _WIN32 |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 144 | static gboolean register_signal_handlers(void) |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 145 | { |
Luiz Capitulino | dc8764f0 | 2012-05-11 16:19:46 -0300 | [diff] [blame] | 146 | struct sigaction sigact; |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 147 | int ret; |
| 148 | |
| 149 | memset(&sigact, 0, sizeof(struct sigaction)); |
| 150 | sigact.sa_handler = quit_handler; |
| 151 | |
| 152 | ret = sigaction(SIGINT, &sigact, NULL); |
| 153 | if (ret == -1) { |
| 154 | g_error("error configuring signal handler: %s", strerror(errno)); |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 155 | } |
| 156 | ret = sigaction(SIGTERM, &sigact, NULL); |
| 157 | if (ret == -1) { |
| 158 | g_error("error configuring signal handler: %s", strerror(errno)); |
| 159 | } |
Luiz Capitulino | 11d0f12 | 2012-02-28 11:03:03 -0300 | [diff] [blame] | 160 | |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 161 | return true; |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 162 | } |
Luiz Capitulino | 04b4e75 | 2012-05-10 16:50:41 -0300 | [diff] [blame] | 163 | |
| 164 | /* TODO: use this in place of all post-fork() fclose(std*) callers */ |
| 165 | void reopen_fd_to_null(int fd) |
| 166 | { |
| 167 | int nullfd; |
| 168 | |
| 169 | nullfd = open("/dev/null", O_RDWR); |
| 170 | if (nullfd < 0) { |
| 171 | return; |
| 172 | } |
| 173 | |
| 174 | dup2(nullfd, fd); |
| 175 | |
| 176 | if (nullfd != fd) { |
| 177 | close(nullfd); |
| 178 | } |
| 179 | } |
Michael Roth | d8ca685 | 2012-01-19 22:04:34 -0600 | [diff] [blame] | 180 | #endif |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 181 | |
| 182 | static void usage(const char *cmd) |
| 183 | { |
| 184 | printf( |
Michael Roth | 4bdd041 | 2012-04-17 11:28:27 -0500 | [diff] [blame] | 185 | "Usage: %s [-m <method> -p <path>] [<options>]\n" |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 186 | "QEMU Guest Agent %s\n" |
| 187 | "\n" |
| 188 | " -m, --method transport method: one of unix-listen, virtio-serial, or\n" |
| 189 | " isa-serial (virtio-serial is the default)\n" |
Michael Roth | 4bdd041 | 2012-04-17 11:28:27 -0500 | [diff] [blame] | 190 | " -p, --path device/socket path (the default for virtio-serial is:\n" |
| 191 | " %s)\n" |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 192 | " -l, --logfile set logfile path, logs to stderr by default\n" |
| 193 | " -f, --pidfile specify pidfile (default is %s)\n" |
Tomoki Sekiyama | ec0f694 | 2012-12-12 12:55:55 +0900 | [diff] [blame] | 194 | #ifdef CONFIG_FSFREEZE |
| 195 | " -F, --fsfreeze-hook\n" |
| 196 | " enable fsfreeze hook. Accepts an optional argument that\n" |
| 197 | " specifies script to run on freeze/thaw. Script will be\n" |
| 198 | " called with 'freeze'/'thaw' arguments accordingly.\n" |
| 199 | " (default is %s)\n" |
| 200 | " If using -F with an argument, do not follow -F with a\n" |
| 201 | " space.\n" |
| 202 | " (for example: -F/var/run/fsfreezehook.sh)\n" |
| 203 | #endif |
Michael Roth | f789aa7 | 2012-04-18 16:28:01 -0500 | [diff] [blame] | 204 | " -t, --statedir specify dir to store state information (absolute paths\n" |
| 205 | " only, default is %s)\n" |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 206 | " -v, --verbose log extra debugging information\n" |
| 207 | " -V, --version print version information and exit\n" |
| 208 | " -d, --daemonize become a daemon\n" |
Michael Roth | bc62fa0 | 2012-01-21 16:42:27 -0600 | [diff] [blame] | 209 | #ifdef _WIN32 |
| 210 | " -s, --service service commands: install, uninstall\n" |
Michael Roth | d8ca685 | 2012-01-19 22:04:34 -0600 | [diff] [blame] | 211 | #endif |
Michael Roth | 4bdd041 | 2012-04-17 11:28:27 -0500 | [diff] [blame] | 212 | " -b, --blacklist comma-separated list of RPCs to disable (no spaces, \"?\"\n" |
Michael Roth | abd6cf6 | 2011-12-06 22:03:42 -0600 | [diff] [blame] | 213 | " to list available RPCs)\n" |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 214 | " -h, --help display this help and exit\n" |
| 215 | "\n" |
| 216 | "Report bugs to <mdroth@linux.vnet.ibm.com>\n" |
Laszlo Ersek | c394ecb | 2013-05-18 06:31:49 +0200 | [diff] [blame] | 217 | , cmd, QEMU_VERSION, QGA_VIRTIO_PATH_DEFAULT, dfl_pathnames.pidfile, |
Tomoki Sekiyama | ec0f694 | 2012-12-12 12:55:55 +0900 | [diff] [blame] | 218 | #ifdef CONFIG_FSFREEZE |
| 219 | QGA_FSFREEZE_HOOK_DEFAULT, |
| 220 | #endif |
Laszlo Ersek | c394ecb | 2013-05-18 06:31:49 +0200 | [diff] [blame] | 221 | dfl_pathnames.state_dir); |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 222 | } |
| 223 | |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 224 | static const char *ga_log_level_str(GLogLevelFlags level) |
| 225 | { |
| 226 | switch (level & G_LOG_LEVEL_MASK) { |
| 227 | case G_LOG_LEVEL_ERROR: |
| 228 | return "error"; |
| 229 | case G_LOG_LEVEL_CRITICAL: |
| 230 | return "critical"; |
| 231 | case G_LOG_LEVEL_WARNING: |
| 232 | return "warning"; |
| 233 | case G_LOG_LEVEL_MESSAGE: |
| 234 | return "message"; |
| 235 | case G_LOG_LEVEL_INFO: |
| 236 | return "info"; |
| 237 | case G_LOG_LEVEL_DEBUG: |
| 238 | return "debug"; |
| 239 | default: |
| 240 | return "user"; |
| 241 | } |
| 242 | } |
| 243 | |
| 244 | bool ga_logging_enabled(GAState *s) |
| 245 | { |
| 246 | return s->logging_enabled; |
| 247 | } |
| 248 | |
| 249 | void ga_disable_logging(GAState *s) |
| 250 | { |
| 251 | s->logging_enabled = false; |
| 252 | } |
| 253 | |
| 254 | void ga_enable_logging(GAState *s) |
| 255 | { |
| 256 | s->logging_enabled = true; |
| 257 | } |
| 258 | |
| 259 | static void ga_log(const gchar *domain, GLogLevelFlags level, |
| 260 | const gchar *msg, gpointer opaque) |
| 261 | { |
| 262 | GAState *s = opaque; |
| 263 | GTimeVal time; |
| 264 | const char *level_str = ga_log_level_str(level); |
| 265 | |
| 266 | if (!ga_logging_enabled(s)) { |
| 267 | return; |
| 268 | } |
| 269 | |
| 270 | level &= G_LOG_LEVEL_MASK; |
Michael Roth | d8ca685 | 2012-01-19 22:04:34 -0600 | [diff] [blame] | 271 | #ifndef _WIN32 |
Michael Roth | 8f47747 | 2011-08-11 15:38:11 -0500 | [diff] [blame] | 272 | if (domain && strcmp(domain, "syslog") == 0) { |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 273 | syslog(LOG_INFO, "%s: %s", level_str, msg); |
| 274 | } else if (level & s->log_level) { |
Michael Roth | d8ca685 | 2012-01-19 22:04:34 -0600 | [diff] [blame] | 275 | #else |
| 276 | if (level & s->log_level) { |
| 277 | #endif |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 278 | g_get_current_time(&time); |
| 279 | fprintf(s->log_file, |
| 280 | "%lu.%lu: %s: %s\n", time.tv_sec, time.tv_usec, level_str, msg); |
| 281 | fflush(s->log_file); |
| 282 | } |
| 283 | } |
| 284 | |
Michael Roth | 3cf0bed | 2012-02-07 13:56:48 -0600 | [diff] [blame] | 285 | void ga_set_response_delimited(GAState *s) |
| 286 | { |
| 287 | s->delimit_response = true; |
| 288 | } |
| 289 | |
Luiz Capitulino | 9e92f6d | 2013-01-08 19:26:26 -0200 | [diff] [blame] | 290 | static FILE *ga_open_logfile(const char *logfile) |
| 291 | { |
| 292 | FILE *f; |
| 293 | |
| 294 | f = fopen(logfile, "a"); |
| 295 | if (!f) { |
| 296 | return NULL; |
| 297 | } |
| 298 | |
| 299 | qemu_set_cloexec(fileno(f)); |
| 300 | return f; |
| 301 | } |
| 302 | |
Michael Roth | f789aa7 | 2012-04-18 16:28:01 -0500 | [diff] [blame] | 303 | #ifndef _WIN32 |
| 304 | static bool ga_open_pidfile(const char *pidfile) |
| 305 | { |
| 306 | int pidfd; |
| 307 | char pidstr[32]; |
| 308 | |
Luiz Capitulino | 6ffacc5 | 2013-01-08 19:26:25 -0200 | [diff] [blame] | 309 | pidfd = qemu_open(pidfile, O_CREAT|O_WRONLY, S_IRUSR|S_IWUSR); |
Michael Roth | f789aa7 | 2012-04-18 16:28:01 -0500 | [diff] [blame] | 310 | if (pidfd == -1 || lockf(pidfd, F_TLOCK, 0)) { |
| 311 | g_critical("Cannot lock pid file, %s", strerror(errno)); |
Jim Meyering | 4144f12 | 2012-08-22 13:55:52 +0200 | [diff] [blame] | 312 | if (pidfd != -1) { |
| 313 | close(pidfd); |
| 314 | } |
Michael Roth | f789aa7 | 2012-04-18 16:28:01 -0500 | [diff] [blame] | 315 | return false; |
| 316 | } |
| 317 | |
Markus Armbruster | 5d27f9c | 2013-01-11 11:24:58 +0100 | [diff] [blame] | 318 | if (ftruncate(pidfd, 0)) { |
Michael Roth | f789aa7 | 2012-04-18 16:28:01 -0500 | [diff] [blame] | 319 | g_critical("Failed to truncate pid file"); |
| 320 | goto fail; |
| 321 | } |
Luiz Capitulino | 9d6f1b7 | 2012-10-03 18:40:01 -0300 | [diff] [blame] | 322 | snprintf(pidstr, sizeof(pidstr), "%d\n", getpid()); |
Michael Roth | f789aa7 | 2012-04-18 16:28:01 -0500 | [diff] [blame] | 323 | if (write(pidfd, pidstr, strlen(pidstr)) != strlen(pidstr)) { |
| 324 | g_critical("Failed to write pid file"); |
| 325 | goto fail; |
| 326 | } |
| 327 | |
Markus Armbruster | 03ac10f | 2013-01-11 11:24:59 +0100 | [diff] [blame] | 328 | /* keep pidfile open & locked forever */ |
Michael Roth | f789aa7 | 2012-04-18 16:28:01 -0500 | [diff] [blame] | 329 | return true; |
| 330 | |
| 331 | fail: |
| 332 | unlink(pidfile); |
Markus Armbruster | 03ac10f | 2013-01-11 11:24:59 +0100 | [diff] [blame] | 333 | close(pidfd); |
Michael Roth | f789aa7 | 2012-04-18 16:28:01 -0500 | [diff] [blame] | 334 | return false; |
| 335 | } |
| 336 | #else /* _WIN32 */ |
| 337 | static bool ga_open_pidfile(const char *pidfile) |
| 338 | { |
| 339 | return true; |
| 340 | } |
| 341 | #endif |
| 342 | |
Michael Roth | f22d85e | 2012-04-17 19:01:45 -0500 | [diff] [blame] | 343 | static gint ga_strcmp(gconstpointer str1, gconstpointer str2) |
| 344 | { |
| 345 | return strcmp(str1, str2); |
| 346 | } |
| 347 | |
| 348 | /* disable commands that aren't safe for fsfreeze */ |
| 349 | static void ga_disable_non_whitelisted(void) |
| 350 | { |
| 351 | char **list_head, **list; |
| 352 | bool whitelisted; |
| 353 | int i; |
| 354 | |
| 355 | list_head = list = qmp_get_command_list(); |
| 356 | while (*list != NULL) { |
| 357 | whitelisted = false; |
| 358 | i = 0; |
| 359 | while (ga_freeze_whitelist[i] != NULL) { |
| 360 | if (strcmp(*list, ga_freeze_whitelist[i]) == 0) { |
| 361 | whitelisted = true; |
| 362 | } |
| 363 | i++; |
| 364 | } |
| 365 | if (!whitelisted) { |
| 366 | g_debug("disabling command: %s", *list); |
| 367 | qmp_disable_command(*list); |
| 368 | } |
| 369 | g_free(*list); |
| 370 | list++; |
| 371 | } |
| 372 | g_free(list_head); |
| 373 | } |
| 374 | |
Jim Meyering | a31f053 | 2012-05-09 05:12:04 +0000 | [diff] [blame] | 375 | /* [re-]enable all commands, except those explicitly blacklisted by user */ |
Michael Roth | f22d85e | 2012-04-17 19:01:45 -0500 | [diff] [blame] | 376 | static void ga_enable_non_blacklisted(GList *blacklist) |
| 377 | { |
| 378 | char **list_head, **list; |
| 379 | |
| 380 | list_head = list = qmp_get_command_list(); |
| 381 | while (*list != NULL) { |
| 382 | if (g_list_find_custom(blacklist, *list, ga_strcmp) == NULL && |
| 383 | !qmp_command_is_enabled(*list)) { |
| 384 | g_debug("enabling command: %s", *list); |
| 385 | qmp_enable_command(*list); |
| 386 | } |
| 387 | g_free(*list); |
| 388 | list++; |
| 389 | } |
| 390 | g_free(list_head); |
| 391 | } |
| 392 | |
Michael Roth | f789aa7 | 2012-04-18 16:28:01 -0500 | [diff] [blame] | 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 | |
Michael Roth | f22d85e | 2012-04-17 19:01:45 -0500 | [diff] [blame] | 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 */ |
| 426 | ga_disable_non_whitelisted(); |
| 427 | g_warning("disabling logging due to filesystem freeze"); |
| 428 | ga_disable_logging(s); |
| 429 | s->frozen = true; |
Michael Roth | f789aa7 | 2012-04-18 16:28:01 -0500 | [diff] [blame] | 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 | } |
Michael Roth | f22d85e | 2012-04-17 19:01:45 -0500 | [diff] [blame] | 434 | } |
| 435 | |
| 436 | void ga_unset_frozen(GAState *s) |
| 437 | { |
| 438 | if (!ga_is_frozen(s)) { |
| 439 | return; |
| 440 | } |
| 441 | |
Michael Roth | f789aa7 | 2012-04-18 16:28:01 -0500 | [diff] [blame] | 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) { |
Luiz Capitulino | 9e92f6d | 2013-01-08 19:26:26 -0200 | [diff] [blame] | 446 | s->log_file = ga_open_logfile(s->deferred_options.log_filepath); |
Michael Roth | f789aa7 | 2012-04-18 16:28:01 -0500 | [diff] [blame] | 447 | if (!s->log_file) { |
| 448 | s->log_file = stderr; |
| 449 | } |
| 450 | s->deferred_options.log_filepath = NULL; |
| 451 | } |
Michael Roth | f22d85e | 2012-04-17 19:01:45 -0500 | [diff] [blame] | 452 | ga_enable_logging(s); |
Michael Roth | f789aa7 | 2012-04-18 16:28:01 -0500 | [diff] [blame] | 453 | g_warning("logging re-enabled due to filesystem unfreeze"); |
| 454 | if (s->deferred_options.pid_filepath) { |
| 455 | if (!ga_open_pidfile(s->deferred_options.pid_filepath)) { |
| 456 | g_warning("failed to create/open pid file"); |
| 457 | } |
| 458 | s->deferred_options.pid_filepath = NULL; |
| 459 | } |
Michael Roth | f22d85e | 2012-04-17 19:01:45 -0500 | [diff] [blame] | 460 | |
| 461 | /* enable all disabled, non-blacklisted commands */ |
| 462 | ga_enable_non_blacklisted(s->blacklist); |
| 463 | s->frozen = false; |
Michael Roth | f789aa7 | 2012-04-18 16:28:01 -0500 | [diff] [blame] | 464 | if (!ga_delete_file(s->state_filepath_isfrozen)) { |
| 465 | g_warning("unable to delete %s, fsfreeze may not function properly", |
| 466 | s->state_filepath_isfrozen); |
| 467 | } |
Michael Roth | f22d85e | 2012-04-17 19:01:45 -0500 | [diff] [blame] | 468 | } |
| 469 | |
Tomoki Sekiyama | ec0f694 | 2012-12-12 12:55:55 +0900 | [diff] [blame] | 470 | #ifdef CONFIG_FSFREEZE |
| 471 | const char *ga_fsfreeze_hook(GAState *s) |
| 472 | { |
| 473 | return s->fsfreeze_hook; |
| 474 | } |
| 475 | #endif |
| 476 | |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 477 | static void become_daemon(const char *pidfile) |
| 478 | { |
Michael Roth | f789aa7 | 2012-04-18 16:28:01 -0500 | [diff] [blame] | 479 | #ifndef _WIN32 |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 480 | pid_t pid, sid; |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 481 | |
| 482 | pid = fork(); |
| 483 | if (pid < 0) { |
| 484 | exit(EXIT_FAILURE); |
| 485 | } |
| 486 | if (pid > 0) { |
| 487 | exit(EXIT_SUCCESS); |
| 488 | } |
| 489 | |
Michael Roth | f789aa7 | 2012-04-18 16:28:01 -0500 | [diff] [blame] | 490 | if (pidfile) { |
| 491 | if (!ga_open_pidfile(pidfile)) { |
| 492 | g_critical("failed to create pidfile"); |
| 493 | exit(EXIT_FAILURE); |
| 494 | } |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 495 | } |
| 496 | |
Laszlo Ersek | c689b4f | 2013-04-24 13:13:18 +0200 | [diff] [blame] | 497 | umask(S_IRWXG | S_IRWXO); |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 498 | sid = setsid(); |
| 499 | if (sid < 0) { |
| 500 | goto fail; |
| 501 | } |
| 502 | if ((chdir("/")) < 0) { |
| 503 | goto fail; |
| 504 | } |
| 505 | |
Luiz Capitulino | 226a489 | 2012-05-10 16:50:42 -0300 | [diff] [blame] | 506 | reopen_fd_to_null(STDIN_FILENO); |
| 507 | reopen_fd_to_null(STDOUT_FILENO); |
| 508 | reopen_fd_to_null(STDERR_FILENO); |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 509 | return; |
| 510 | |
| 511 | fail: |
Stefan Weil | 4bdb1a30 | 2012-08-24 07:03:03 +0200 | [diff] [blame] | 512 | if (pidfile) { |
| 513 | unlink(pidfile); |
| 514 | } |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 515 | g_critical("failed to daemonize"); |
| 516 | exit(EXIT_FAILURE); |
Michael Roth | d8ca685 | 2012-01-19 22:04:34 -0600 | [diff] [blame] | 517 | #endif |
Michael Roth | f789aa7 | 2012-04-18 16:28:01 -0500 | [diff] [blame] | 518 | } |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 519 | |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 520 | static int send_response(GAState *s, QObject *payload) |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 521 | { |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 522 | const char *buf; |
Michael Roth | 3cf0bed | 2012-02-07 13:56:48 -0600 | [diff] [blame] | 523 | QString *payload_qstr, *response_qstr; |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 524 | GIOStatus status; |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 525 | |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 526 | g_assert(payload && s->channel); |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 527 | |
| 528 | payload_qstr = qobject_to_json(payload); |
| 529 | if (!payload_qstr) { |
| 530 | return -EINVAL; |
| 531 | } |
| 532 | |
Michael Roth | 3cf0bed | 2012-02-07 13:56:48 -0600 | [diff] [blame] | 533 | if (s->delimit_response) { |
| 534 | s->delimit_response = false; |
| 535 | response_qstr = qstring_new(); |
| 536 | qstring_append_chr(response_qstr, QGA_SENTINEL_BYTE); |
| 537 | qstring_append(response_qstr, qstring_get_str(payload_qstr)); |
| 538 | QDECREF(payload_qstr); |
| 539 | } else { |
| 540 | response_qstr = payload_qstr; |
| 541 | } |
| 542 | |
| 543 | qstring_append_chr(response_qstr, '\n'); |
| 544 | buf = qstring_get_str(response_qstr); |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 545 | status = ga_channel_write_all(s->channel, buf, strlen(buf)); |
Michael Roth | 3cf0bed | 2012-02-07 13:56:48 -0600 | [diff] [blame] | 546 | QDECREF(response_qstr); |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 547 | if (status != G_IO_STATUS_NORMAL) { |
| 548 | return -EIO; |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 549 | } |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 550 | |
| 551 | return 0; |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 552 | } |
| 553 | |
| 554 | static void process_command(GAState *s, QDict *req) |
| 555 | { |
| 556 | QObject *rsp = NULL; |
| 557 | int ret; |
| 558 | |
| 559 | g_assert(req); |
| 560 | g_debug("processing command"); |
| 561 | rsp = qmp_dispatch(QOBJECT(req)); |
| 562 | if (rsp) { |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 563 | ret = send_response(s, rsp); |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 564 | if (ret) { |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 565 | g_warning("error sending response: %s", strerror(ret)); |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 566 | } |
| 567 | qobject_decref(rsp); |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 568 | } |
| 569 | } |
| 570 | |
| 571 | /* handle requests/control events coming in over the channel */ |
| 572 | static void process_event(JSONMessageParser *parser, QList *tokens) |
| 573 | { |
| 574 | GAState *s = container_of(parser, GAState, parser); |
| 575 | QObject *obj; |
| 576 | QDict *qdict; |
| 577 | Error *err = NULL; |
| 578 | int ret; |
| 579 | |
| 580 | g_assert(s && parser); |
| 581 | |
| 582 | g_debug("process_event: called"); |
| 583 | obj = json_parser_parse_err(tokens, NULL, &err); |
| 584 | if (err || !obj || qobject_type(obj) != QTYPE_QDICT) { |
| 585 | qobject_decref(obj); |
| 586 | qdict = qdict_new(); |
| 587 | if (!err) { |
| 588 | g_warning("failed to parse event: unknown error"); |
| 589 | error_set(&err, QERR_JSON_PARSING); |
| 590 | } else { |
| 591 | g_warning("failed to parse event: %s", error_get_pretty(err)); |
| 592 | } |
Luiz Capitulino | 93b91c5 | 2012-08-01 16:30:13 -0300 | [diff] [blame] | 593 | qdict_put_obj(qdict, "error", qmp_build_error_object(err)); |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 594 | error_free(err); |
| 595 | } else { |
| 596 | qdict = qobject_to_qdict(obj); |
| 597 | } |
| 598 | |
| 599 | g_assert(qdict); |
| 600 | |
| 601 | /* handle host->guest commands */ |
| 602 | if (qdict_haskey(qdict, "execute")) { |
| 603 | process_command(s, qdict); |
| 604 | } else { |
| 605 | if (!qdict_haskey(qdict, "error")) { |
| 606 | QDECREF(qdict); |
| 607 | qdict = qdict_new(); |
| 608 | g_warning("unrecognized payload format"); |
| 609 | error_set(&err, QERR_UNSUPPORTED); |
Luiz Capitulino | 93b91c5 | 2012-08-01 16:30:13 -0300 | [diff] [blame] | 610 | qdict_put_obj(qdict, "error", qmp_build_error_object(err)); |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 611 | error_free(err); |
| 612 | } |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 613 | ret = send_response(s, QOBJECT(qdict)); |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 614 | if (ret) { |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 615 | g_warning("error sending error response: %s", strerror(ret)); |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 616 | } |
| 617 | } |
| 618 | |
| 619 | QDECREF(qdict); |
| 620 | } |
| 621 | |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 622 | /* false return signals GAChannel to close the current client connection */ |
| 623 | static gboolean channel_event_cb(GIOCondition condition, gpointer data) |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 624 | { |
| 625 | GAState *s = data; |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 626 | gchar buf[QGA_READ_COUNT_DEFAULT+1]; |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 627 | gsize count; |
| 628 | GError *err = NULL; |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 629 | GIOStatus status = ga_channel_read(s->channel, buf, QGA_READ_COUNT_DEFAULT, &count); |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 630 | if (err != NULL) { |
| 631 | g_warning("error reading channel: %s", err->message); |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 632 | g_error_free(err); |
| 633 | return false; |
| 634 | } |
| 635 | switch (status) { |
| 636 | case G_IO_STATUS_ERROR: |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 637 | g_warning("error reading channel"); |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 638 | return false; |
| 639 | case G_IO_STATUS_NORMAL: |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 640 | buf[count] = 0; |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 641 | g_debug("read data, count: %d, data: %s", (int)count, buf); |
| 642 | json_message_parser_feed(&s->parser, (char *)buf, (int)count); |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 643 | break; |
| 644 | case G_IO_STATUS_EOF: |
| 645 | g_debug("received EOF"); |
| 646 | if (!s->virtio) { |
| 647 | return false; |
| 648 | } |
Markus Armbruster | f5b7957 | 2013-01-11 11:24:57 +0100 | [diff] [blame] | 649 | /* fall through */ |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 650 | case G_IO_STATUS_AGAIN: |
| 651 | /* virtio causes us to spin here when no process is attached to |
| 652 | * host-side chardev. sleep a bit to mitigate this |
| 653 | */ |
| 654 | if (s->virtio) { |
| 655 | usleep(100*1000); |
| 656 | } |
| 657 | return true; |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 658 | default: |
| 659 | g_warning("unknown channel read status, closing"); |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 660 | return false; |
| 661 | } |
| 662 | return true; |
| 663 | } |
| 664 | |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 665 | static gboolean channel_init(GAState *s, const gchar *method, const gchar *path) |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 666 | { |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 667 | GAChannelMethod channel_method; |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 668 | |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 669 | if (method == NULL) { |
| 670 | method = "virtio-serial"; |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 671 | } |
| 672 | |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 673 | if (path == NULL) { |
| 674 | if (strcmp(method, "virtio-serial") != 0) { |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 675 | g_critical("must specify a path for this channel"); |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 676 | return false; |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 677 | } |
| 678 | /* try the default path for the virtio-serial port */ |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 679 | path = QGA_VIRTIO_PATH_DEFAULT; |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 680 | } |
| 681 | |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 682 | if (strcmp(method, "virtio-serial") == 0) { |
| 683 | s->virtio = true; /* virtio requires special handling in some cases */ |
| 684 | channel_method = GA_CHANNEL_VIRTIO_SERIAL; |
| 685 | } else if (strcmp(method, "isa-serial") == 0) { |
| 686 | channel_method = GA_CHANNEL_ISA_SERIAL; |
| 687 | } else if (strcmp(method, "unix-listen") == 0) { |
| 688 | channel_method = GA_CHANNEL_UNIX_LISTEN; |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 689 | } else { |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 690 | g_critical("unsupported channel method/type: %s", method); |
| 691 | return false; |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 692 | } |
| 693 | |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 694 | s->channel = ga_channel_new(channel_method, path, channel_event_cb, s); |
| 695 | if (!s->channel) { |
| 696 | g_critical("failed to create guest agent channel"); |
| 697 | return false; |
| 698 | } |
| 699 | |
| 700 | return true; |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 701 | } |
| 702 | |
Michael Roth | bc62fa0 | 2012-01-21 16:42:27 -0600 | [diff] [blame] | 703 | #ifdef _WIN32 |
| 704 | DWORD WINAPI service_ctrl_handler(DWORD ctrl, DWORD type, LPVOID data, |
| 705 | LPVOID ctx) |
| 706 | { |
| 707 | DWORD ret = NO_ERROR; |
| 708 | GAService *service = &ga_state->service; |
| 709 | |
| 710 | switch (ctrl) |
| 711 | { |
| 712 | case SERVICE_CONTROL_STOP: |
| 713 | case SERVICE_CONTROL_SHUTDOWN: |
| 714 | quit_handler(SIGTERM); |
| 715 | service->status.dwCurrentState = SERVICE_STOP_PENDING; |
| 716 | SetServiceStatus(service->status_handle, &service->status); |
| 717 | break; |
| 718 | |
| 719 | default: |
| 720 | ret = ERROR_CALL_NOT_IMPLEMENTED; |
| 721 | } |
| 722 | return ret; |
| 723 | } |
| 724 | |
| 725 | VOID WINAPI service_main(DWORD argc, TCHAR *argv[]) |
| 726 | { |
| 727 | GAService *service = &ga_state->service; |
| 728 | |
| 729 | service->status_handle = RegisterServiceCtrlHandlerEx(QGA_SERVICE_NAME, |
| 730 | service_ctrl_handler, NULL); |
| 731 | |
| 732 | if (service->status_handle == 0) { |
| 733 | g_critical("Failed to register extended requests function!\n"); |
| 734 | return; |
| 735 | } |
| 736 | |
| 737 | service->status.dwServiceType = SERVICE_WIN32; |
| 738 | service->status.dwCurrentState = SERVICE_RUNNING; |
| 739 | service->status.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN; |
| 740 | service->status.dwWin32ExitCode = NO_ERROR; |
| 741 | service->status.dwServiceSpecificExitCode = NO_ERROR; |
| 742 | service->status.dwCheckPoint = 0; |
| 743 | service->status.dwWaitHint = 0; |
| 744 | SetServiceStatus(service->status_handle, &service->status); |
| 745 | |
| 746 | g_main_loop_run(ga_state->main_loop); |
| 747 | |
| 748 | service->status.dwCurrentState = SERVICE_STOPPED; |
| 749 | SetServiceStatus(service->status_handle, &service->status); |
| 750 | } |
| 751 | #endif |
| 752 | |
Michael Roth | 39097da | 2013-03-01 11:40:27 -0600 | [diff] [blame] | 753 | static void set_persistent_state_defaults(GAPersistentState *pstate) |
| 754 | { |
| 755 | g_assert(pstate); |
| 756 | pstate->fd_counter = QGA_PSTATE_DEFAULT_FD_COUNTER; |
| 757 | } |
| 758 | |
| 759 | static void persistent_state_from_keyfile(GAPersistentState *pstate, |
| 760 | GKeyFile *keyfile) |
| 761 | { |
| 762 | g_assert(pstate); |
| 763 | g_assert(keyfile); |
| 764 | /* if any fields are missing, either because the file was tampered with |
| 765 | * by agents of chaos, or because the field wasn't present at the time the |
| 766 | * file was created, the best we can ever do is start over with the default |
| 767 | * values. so load them now, and ignore any errors in accessing key-value |
| 768 | * pairs |
| 769 | */ |
| 770 | set_persistent_state_defaults(pstate); |
| 771 | |
| 772 | if (g_key_file_has_key(keyfile, "global", "fd_counter", NULL)) { |
| 773 | pstate->fd_counter = |
Peter Crosthwaite | 4f30649 | 2013-03-15 15:04:39 +1000 | [diff] [blame] | 774 | g_key_file_get_integer(keyfile, "global", "fd_counter", NULL); |
Michael Roth | 39097da | 2013-03-01 11:40:27 -0600 | [diff] [blame] | 775 | } |
| 776 | } |
| 777 | |
| 778 | static void persistent_state_to_keyfile(const GAPersistentState *pstate, |
| 779 | GKeyFile *keyfile) |
| 780 | { |
| 781 | g_assert(pstate); |
| 782 | g_assert(keyfile); |
| 783 | |
Peter Crosthwaite | 4f30649 | 2013-03-15 15:04:39 +1000 | [diff] [blame] | 784 | g_key_file_set_integer(keyfile, "global", "fd_counter", pstate->fd_counter); |
Michael Roth | 39097da | 2013-03-01 11:40:27 -0600 | [diff] [blame] | 785 | } |
| 786 | |
| 787 | static gboolean write_persistent_state(const GAPersistentState *pstate, |
| 788 | const gchar *path) |
| 789 | { |
| 790 | GKeyFile *keyfile = g_key_file_new(); |
| 791 | GError *gerr = NULL; |
| 792 | gboolean ret = true; |
| 793 | gchar *data = NULL; |
| 794 | gsize data_len; |
| 795 | |
| 796 | g_assert(pstate); |
| 797 | |
| 798 | persistent_state_to_keyfile(pstate, keyfile); |
| 799 | data = g_key_file_to_data(keyfile, &data_len, &gerr); |
| 800 | if (gerr) { |
| 801 | g_critical("failed to convert persistent state to string: %s", |
| 802 | gerr->message); |
| 803 | ret = false; |
| 804 | goto out; |
| 805 | } |
| 806 | |
| 807 | g_file_set_contents(path, data, data_len, &gerr); |
| 808 | if (gerr) { |
| 809 | g_critical("failed to write persistent state to %s: %s", |
| 810 | path, gerr->message); |
| 811 | ret = false; |
| 812 | goto out; |
| 813 | } |
| 814 | |
| 815 | out: |
| 816 | if (gerr) { |
| 817 | g_error_free(gerr); |
| 818 | } |
| 819 | if (keyfile) { |
| 820 | g_key_file_free(keyfile); |
| 821 | } |
| 822 | g_free(data); |
| 823 | return ret; |
| 824 | } |
| 825 | |
| 826 | static gboolean read_persistent_state(GAPersistentState *pstate, |
| 827 | const gchar *path, gboolean frozen) |
| 828 | { |
| 829 | GKeyFile *keyfile = NULL; |
| 830 | GError *gerr = NULL; |
| 831 | struct stat st; |
| 832 | gboolean ret = true; |
| 833 | |
| 834 | g_assert(pstate); |
| 835 | |
| 836 | if (stat(path, &st) == -1) { |
| 837 | /* it's okay if state file doesn't exist, but any other error |
| 838 | * indicates a permissions issue or some other misconfiguration |
| 839 | * that we likely won't be able to recover from. |
| 840 | */ |
| 841 | if (errno != ENOENT) { |
| 842 | g_critical("unable to access state file at path %s: %s", |
| 843 | path, strerror(errno)); |
| 844 | ret = false; |
| 845 | goto out; |
| 846 | } |
| 847 | |
| 848 | /* file doesn't exist. initialize state to default values and |
| 849 | * attempt to save now. (we could wait till later when we have |
| 850 | * modified state we need to commit, but if there's a problem, |
| 851 | * such as a missing parent directory, we want to catch it now) |
| 852 | * |
| 853 | * there is a potential scenario where someone either managed to |
| 854 | * update the agent from a version that didn't use a key store |
| 855 | * while qemu-ga thought the filesystem was frozen, or |
| 856 | * deleted the key store prior to issuing a fsfreeze, prior |
| 857 | * to restarting the agent. in this case we go ahead and defer |
| 858 | * initial creation till we actually have modified state to |
| 859 | * write, otherwise fail to recover from freeze. |
| 860 | */ |
| 861 | set_persistent_state_defaults(pstate); |
| 862 | if (!frozen) { |
| 863 | ret = write_persistent_state(pstate, path); |
| 864 | if (!ret) { |
| 865 | g_critical("unable to create state file at path %s", path); |
| 866 | ret = false; |
| 867 | goto out; |
| 868 | } |
| 869 | } |
| 870 | ret = true; |
| 871 | goto out; |
| 872 | } |
| 873 | |
| 874 | keyfile = g_key_file_new(); |
| 875 | g_key_file_load_from_file(keyfile, path, 0, &gerr); |
| 876 | if (gerr) { |
| 877 | g_critical("error loading persistent state from path: %s, %s", |
| 878 | path, gerr->message); |
| 879 | ret = false; |
| 880 | goto out; |
| 881 | } |
| 882 | |
| 883 | persistent_state_from_keyfile(pstate, keyfile); |
| 884 | |
| 885 | out: |
| 886 | if (keyfile) { |
| 887 | g_key_file_free(keyfile); |
| 888 | } |
| 889 | if (gerr) { |
| 890 | g_error_free(gerr); |
| 891 | } |
| 892 | |
| 893 | return ret; |
| 894 | } |
| 895 | |
| 896 | int64_t ga_get_fd_handle(GAState *s, Error **errp) |
| 897 | { |
| 898 | int64_t handle; |
| 899 | |
| 900 | g_assert(s->pstate_filepath); |
| 901 | /* we blacklist commands and avoid operations that potentially require |
| 902 | * writing to disk when we're in a frozen state. this includes opening |
| 903 | * new files, so we should never get here in that situation |
| 904 | */ |
| 905 | g_assert(!ga_is_frozen(s)); |
| 906 | |
| 907 | handle = s->pstate.fd_counter++; |
Luiz Capitulino | ce7f7cc | 2013-03-22 16:31:07 -0400 | [diff] [blame] | 908 | |
| 909 | /* This should never happen on a reasonable timeframe, as guest-file-open |
| 910 | * would have to be issued 2^63 times */ |
| 911 | if (s->pstate.fd_counter == INT64_MAX) { |
| 912 | abort(); |
Michael Roth | 39097da | 2013-03-01 11:40:27 -0600 | [diff] [blame] | 913 | } |
Luiz Capitulino | ce7f7cc | 2013-03-22 16:31:07 -0400 | [diff] [blame] | 914 | |
Michael Roth | 39097da | 2013-03-01 11:40:27 -0600 | [diff] [blame] | 915 | if (!write_persistent_state(&s->pstate, s->pstate_filepath)) { |
| 916 | error_setg(errp, "failed to commit persistent state to disk"); |
| 917 | } |
| 918 | |
| 919 | return handle; |
| 920 | } |
| 921 | |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 922 | int main(int argc, char **argv) |
| 923 | { |
Tomoki Sekiyama | ec0f694 | 2012-12-12 12:55:55 +0900 | [diff] [blame] | 924 | const char *sopt = "hVvdm:p:l:f:F::b:s:t:"; |
Michael Roth | f789aa7 | 2012-04-18 16:28:01 -0500 | [diff] [blame] | 925 | const char *method = NULL, *path = NULL; |
| 926 | const char *log_filepath = NULL; |
Laszlo Ersek | c394ecb | 2013-05-18 06:31:49 +0200 | [diff] [blame] | 927 | const char *pid_filepath; |
Tomoki Sekiyama | ec0f694 | 2012-12-12 12:55:55 +0900 | [diff] [blame] | 928 | #ifdef CONFIG_FSFREEZE |
| 929 | const char *fsfreeze_hook = NULL; |
| 930 | #endif |
Laszlo Ersek | c394ecb | 2013-05-18 06:31:49 +0200 | [diff] [blame] | 931 | const char *state_dir; |
Michael Roth | bc62fa0 | 2012-01-21 16:42:27 -0600 | [diff] [blame] | 932 | #ifdef _WIN32 |
| 933 | const char *service = NULL; |
| 934 | #endif |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 935 | const struct option lopt[] = { |
| 936 | { "help", 0, NULL, 'h' }, |
| 937 | { "version", 0, NULL, 'V' }, |
Michael Roth | bc62fa0 | 2012-01-21 16:42:27 -0600 | [diff] [blame] | 938 | { "logfile", 1, NULL, 'l' }, |
| 939 | { "pidfile", 1, NULL, 'f' }, |
Tomoki Sekiyama | ec0f694 | 2012-12-12 12:55:55 +0900 | [diff] [blame] | 940 | #ifdef CONFIG_FSFREEZE |
| 941 | { "fsfreeze-hook", 2, NULL, 'F' }, |
| 942 | #endif |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 943 | { "verbose", 0, NULL, 'v' }, |
Michael Roth | bc62fa0 | 2012-01-21 16:42:27 -0600 | [diff] [blame] | 944 | { "method", 1, NULL, 'm' }, |
| 945 | { "path", 1, NULL, 'p' }, |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 946 | { "daemonize", 0, NULL, 'd' }, |
Michael Roth | bc62fa0 | 2012-01-21 16:42:27 -0600 | [diff] [blame] | 947 | { "blacklist", 1, NULL, 'b' }, |
| 948 | #ifdef _WIN32 |
| 949 | { "service", 1, NULL, 's' }, |
Michael Roth | f22d85e | 2012-04-17 19:01:45 -0500 | [diff] [blame] | 950 | #endif |
Michael Roth | f789aa7 | 2012-04-18 16:28:01 -0500 | [diff] [blame] | 951 | { "statedir", 1, NULL, 't' }, |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 952 | { NULL, 0, NULL, 0 } |
| 953 | }; |
Michael Roth | abd6cf6 | 2011-12-06 22:03:42 -0600 | [diff] [blame] | 954 | int opt_ind = 0, ch, daemonize = 0, i, j, len; |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 955 | GLogLevelFlags log_level = G_LOG_LEVEL_ERROR | G_LOG_LEVEL_CRITICAL; |
Michael Roth | f22d85e | 2012-04-17 19:01:45 -0500 | [diff] [blame] | 956 | GList *blacklist = NULL; |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 957 | GAState *s; |
| 958 | |
Michael Roth | abd6cf6 | 2011-12-06 22:03:42 -0600 | [diff] [blame] | 959 | module_call_init(MODULE_INIT_QAPI); |
| 960 | |
Laszlo Ersek | c394ecb | 2013-05-18 06:31:49 +0200 | [diff] [blame] | 961 | init_dfl_pathnames(); |
| 962 | pid_filepath = dfl_pathnames.pidfile; |
| 963 | state_dir = dfl_pathnames.state_dir; |
| 964 | |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 965 | while ((ch = getopt_long(argc, argv, sopt, lopt, &opt_ind)) != -1) { |
| 966 | switch (ch) { |
| 967 | case 'm': |
| 968 | method = optarg; |
| 969 | break; |
| 970 | case 'p': |
| 971 | path = optarg; |
| 972 | break; |
| 973 | case 'l': |
Michael Roth | f789aa7 | 2012-04-18 16:28:01 -0500 | [diff] [blame] | 974 | log_filepath = optarg; |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 975 | break; |
| 976 | case 'f': |
Michael Roth | f789aa7 | 2012-04-18 16:28:01 -0500 | [diff] [blame] | 977 | pid_filepath = optarg; |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 978 | break; |
Tomoki Sekiyama | ec0f694 | 2012-12-12 12:55:55 +0900 | [diff] [blame] | 979 | #ifdef CONFIG_FSFREEZE |
| 980 | case 'F': |
| 981 | fsfreeze_hook = optarg ? optarg : QGA_FSFREEZE_HOOK_DEFAULT; |
| 982 | break; |
| 983 | #endif |
Michael Roth | f789aa7 | 2012-04-18 16:28:01 -0500 | [diff] [blame] | 984 | case 't': |
| 985 | state_dir = optarg; |
| 986 | break; |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 987 | case 'v': |
| 988 | /* enable all log levels */ |
| 989 | log_level = G_LOG_LEVEL_MASK; |
| 990 | break; |
| 991 | case 'V': |
Michael Roth | 8efacc4 | 2012-05-14 09:33:48 -0500 | [diff] [blame] | 992 | printf("QEMU Guest Agent %s\n", QEMU_VERSION); |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 993 | return 0; |
| 994 | case 'd': |
| 995 | daemonize = 1; |
| 996 | break; |
Michael Roth | abd6cf6 | 2011-12-06 22:03:42 -0600 | [diff] [blame] | 997 | case 'b': { |
| 998 | char **list_head, **list; |
Peter Maydell | c8057f9 | 2012-08-02 13:45:54 +0100 | [diff] [blame] | 999 | if (is_help_option(optarg)) { |
Michael Roth | abd6cf6 | 2011-12-06 22:03:42 -0600 | [diff] [blame] | 1000 | list_head = list = qmp_get_command_list(); |
| 1001 | while (*list != NULL) { |
| 1002 | printf("%s\n", *list); |
| 1003 | g_free(*list); |
| 1004 | list++; |
| 1005 | } |
| 1006 | g_free(list_head); |
| 1007 | return 0; |
| 1008 | } |
| 1009 | for (j = 0, i = 0, len = strlen(optarg); i < len; i++) { |
| 1010 | if (optarg[i] == ',') { |
| 1011 | optarg[i] = 0; |
Michael Roth | f22d85e | 2012-04-17 19:01:45 -0500 | [diff] [blame] | 1012 | blacklist = g_list_append(blacklist, &optarg[j]); |
Michael Roth | abd6cf6 | 2011-12-06 22:03:42 -0600 | [diff] [blame] | 1013 | j = i + 1; |
| 1014 | } |
| 1015 | } |
| 1016 | if (j < i) { |
Michael Roth | f22d85e | 2012-04-17 19:01:45 -0500 | [diff] [blame] | 1017 | blacklist = g_list_append(blacklist, &optarg[j]); |
Michael Roth | abd6cf6 | 2011-12-06 22:03:42 -0600 | [diff] [blame] | 1018 | } |
| 1019 | break; |
| 1020 | } |
Michael Roth | bc62fa0 | 2012-01-21 16:42:27 -0600 | [diff] [blame] | 1021 | #ifdef _WIN32 |
| 1022 | case 's': |
| 1023 | service = optarg; |
| 1024 | if (strcmp(service, "install") == 0) { |
Laszlo Ersek | a839ee7 | 2013-05-18 06:31:53 +0200 | [diff] [blame] | 1025 | const char *fixed_state_dir; |
| 1026 | |
| 1027 | /* If the user passed the "-t" option, we save that state dir |
| 1028 | * in the service. Otherwise we let the service fetch the state |
| 1029 | * dir from the environment when it starts. |
| 1030 | */ |
| 1031 | fixed_state_dir = (state_dir == dfl_pathnames.state_dir) ? |
| 1032 | NULL : |
| 1033 | state_dir; |
| 1034 | return ga_install_service(path, log_filepath, fixed_state_dir); |
Michael Roth | bc62fa0 | 2012-01-21 16:42:27 -0600 | [diff] [blame] | 1035 | } else if (strcmp(service, "uninstall") == 0) { |
| 1036 | return ga_uninstall_service(); |
| 1037 | } else { |
| 1038 | printf("Unknown service command.\n"); |
| 1039 | return EXIT_FAILURE; |
| 1040 | } |
| 1041 | break; |
| 1042 | #endif |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 1043 | case 'h': |
| 1044 | usage(argv[0]); |
| 1045 | return 0; |
| 1046 | case '?': |
| 1047 | g_print("Unknown option, try '%s --help' for more information.\n", |
| 1048 | argv[0]); |
| 1049 | return EXIT_FAILURE; |
| 1050 | } |
| 1051 | } |
| 1052 | |
Laszlo Ersek | bf12c1f | 2013-05-18 06:31:51 +0200 | [diff] [blame] | 1053 | #ifdef _WIN32 |
| 1054 | /* On win32 the state directory is application specific (be it the default |
| 1055 | * or a user override). We got past the command line parsing; let's create |
| 1056 | * the directory (with any intermediate directories). If we run into an |
| 1057 | * error later on, we won't try to clean up the directory, it is considered |
| 1058 | * persistent. |
| 1059 | */ |
| 1060 | if (g_mkdir_with_parents(state_dir, S_IRWXU) == -1) { |
| 1061 | g_critical("unable to create (an ancestor of) the state directory" |
| 1062 | " '%s': %s", state_dir, strerror(errno)); |
| 1063 | return EXIT_FAILURE; |
| 1064 | } |
| 1065 | #endif |
| 1066 | |
Michael Roth | f789aa7 | 2012-04-18 16:28:01 -0500 | [diff] [blame] | 1067 | s = g_malloc0(sizeof(GAState)); |
| 1068 | s->log_level = log_level; |
| 1069 | s->log_file = stderr; |
Tomoki Sekiyama | ec0f694 | 2012-12-12 12:55:55 +0900 | [diff] [blame] | 1070 | #ifdef CONFIG_FSFREEZE |
| 1071 | s->fsfreeze_hook = fsfreeze_hook; |
| 1072 | #endif |
Michael Roth | f789aa7 | 2012-04-18 16:28:01 -0500 | [diff] [blame] | 1073 | g_log_set_default_handler(ga_log, s); |
| 1074 | g_log_set_fatal_mask(NULL, G_LOG_LEVEL_ERROR); |
| 1075 | ga_enable_logging(s); |
| 1076 | s->state_filepath_isfrozen = g_strdup_printf("%s/qga.state.isfrozen", |
| 1077 | state_dir); |
Michael Roth | 39097da | 2013-03-01 11:40:27 -0600 | [diff] [blame] | 1078 | s->pstate_filepath = g_strdup_printf("%s/qga.state", state_dir); |
Michael Roth | f789aa7 | 2012-04-18 16:28:01 -0500 | [diff] [blame] | 1079 | s->frozen = false; |
Michael Roth | 39097da | 2013-03-01 11:40:27 -0600 | [diff] [blame] | 1080 | |
Michael Roth | d8ca685 | 2012-01-19 22:04:34 -0600 | [diff] [blame] | 1081 | #ifndef _WIN32 |
Michael Roth | f789aa7 | 2012-04-18 16:28:01 -0500 | [diff] [blame] | 1082 | /* check if a previous instance of qemu-ga exited with filesystems' state |
| 1083 | * marked as frozen. this could be a stale value (a non-qemu-ga process |
| 1084 | * or reboot may have since unfrozen them), but better to require an |
| 1085 | * uneeded unfreeze than to risk hanging on start-up |
| 1086 | */ |
| 1087 | struct stat st; |
| 1088 | if (stat(s->state_filepath_isfrozen, &st) == -1) { |
| 1089 | /* it's okay if the file doesn't exist, but if we can't access for |
| 1090 | * some other reason, such as permissions, there's a configuration |
| 1091 | * that needs to be addressed. so just bail now before we get into |
| 1092 | * more trouble later |
| 1093 | */ |
| 1094 | if (errno != ENOENT) { |
| 1095 | g_critical("unable to access state file at path %s: %s", |
| 1096 | s->state_filepath_isfrozen, strerror(errno)); |
| 1097 | return EXIT_FAILURE; |
| 1098 | } |
| 1099 | } else { |
| 1100 | g_warning("previous instance appears to have exited with frozen" |
| 1101 | " filesystems. deferring logging/pidfile creation and" |
| 1102 | " disabling non-fsfreeze-safe commands until" |
| 1103 | " guest-fsfreeze-thaw is issued, or filesystems are" |
| 1104 | " manually unfrozen and the file %s is removed", |
| 1105 | s->state_filepath_isfrozen); |
| 1106 | s->frozen = true; |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 1107 | } |
Michael Roth | d8ca685 | 2012-01-19 22:04:34 -0600 | [diff] [blame] | 1108 | #endif |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 1109 | |
Michael Roth | f789aa7 | 2012-04-18 16:28:01 -0500 | [diff] [blame] | 1110 | if (ga_is_frozen(s)) { |
| 1111 | if (daemonize) { |
| 1112 | /* delay opening/locking of pidfile till filesystem are unfrozen */ |
| 1113 | s->deferred_options.pid_filepath = pid_filepath; |
| 1114 | become_daemon(NULL); |
| 1115 | } |
| 1116 | if (log_filepath) { |
| 1117 | /* delay opening the log file till filesystems are unfrozen */ |
| 1118 | s->deferred_options.log_filepath = log_filepath; |
| 1119 | } |
| 1120 | ga_disable_logging(s); |
| 1121 | ga_disable_non_whitelisted(); |
| 1122 | } else { |
| 1123 | if (daemonize) { |
| 1124 | become_daemon(pid_filepath); |
| 1125 | } |
| 1126 | if (log_filepath) { |
Luiz Capitulino | 9e92f6d | 2013-01-08 19:26:26 -0200 | [diff] [blame] | 1127 | FILE *log_file = ga_open_logfile(log_filepath); |
Michael Roth | 6c615ec | 2012-05-14 16:42:35 -0500 | [diff] [blame] | 1128 | if (!log_file) { |
Michael Roth | f789aa7 | 2012-04-18 16:28:01 -0500 | [diff] [blame] | 1129 | g_critical("unable to open specified log file: %s", |
| 1130 | strerror(errno)); |
| 1131 | goto out_bad; |
| 1132 | } |
Michael Roth | 6c615ec | 2012-05-14 16:42:35 -0500 | [diff] [blame] | 1133 | s->log_file = log_file; |
Michael Roth | f789aa7 | 2012-04-18 16:28:01 -0500 | [diff] [blame] | 1134 | } |
| 1135 | } |
| 1136 | |
Michael Roth | 39097da | 2013-03-01 11:40:27 -0600 | [diff] [blame] | 1137 | /* load persistent state from disk */ |
| 1138 | if (!read_persistent_state(&s->pstate, |
| 1139 | s->pstate_filepath, |
| 1140 | ga_is_frozen(s))) { |
| 1141 | g_critical("failed to load persistent state"); |
| 1142 | goto out_bad; |
| 1143 | } |
| 1144 | |
Michael Roth | f22d85e | 2012-04-17 19:01:45 -0500 | [diff] [blame] | 1145 | if (blacklist) { |
| 1146 | s->blacklist = blacklist; |
| 1147 | do { |
| 1148 | g_debug("disabling command: %s", (char *)blacklist->data); |
| 1149 | qmp_disable_command(blacklist->data); |
| 1150 | blacklist = g_list_next(blacklist); |
| 1151 | } while (blacklist); |
| 1152 | } |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 1153 | s->command_state = ga_command_state_new(); |
| 1154 | ga_command_state_init(s, s->command_state); |
| 1155 | ga_command_state_init_all(s->command_state); |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 1156 | json_message_parser_init(&s->parser, process_event); |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 1157 | ga_state = s; |
Michael Roth | d8ca685 | 2012-01-19 22:04:34 -0600 | [diff] [blame] | 1158 | #ifndef _WIN32 |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 1159 | if (!register_signal_handlers()) { |
| 1160 | g_critical("failed to register signal handlers"); |
| 1161 | goto out_bad; |
| 1162 | } |
Michael Roth | d8ca685 | 2012-01-19 22:04:34 -0600 | [diff] [blame] | 1163 | #endif |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 1164 | |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 1165 | s->main_loop = g_main_loop_new(NULL, false); |
| 1166 | if (!channel_init(ga_state, method, path)) { |
| 1167 | g_critical("failed to initialize guest agent channel"); |
| 1168 | goto out_bad; |
| 1169 | } |
Michael Roth | bc62fa0 | 2012-01-21 16:42:27 -0600 | [diff] [blame] | 1170 | #ifndef _WIN32 |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 1171 | g_main_loop_run(ga_state->main_loop); |
Michael Roth | bc62fa0 | 2012-01-21 16:42:27 -0600 | [diff] [blame] | 1172 | #else |
| 1173 | if (daemonize) { |
| 1174 | SERVICE_TABLE_ENTRY service_table[] = { |
| 1175 | { (char *)QGA_SERVICE_NAME, service_main }, { NULL, NULL } }; |
| 1176 | StartServiceCtrlDispatcher(service_table); |
| 1177 | } else { |
| 1178 | g_main_loop_run(ga_state->main_loop); |
| 1179 | } |
| 1180 | #endif |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 1181 | |
Michael Roth | e3d4d25 | 2011-07-19 15:41:55 -0500 | [diff] [blame] | 1182 | ga_command_state_cleanup_all(ga_state->command_state); |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 1183 | ga_channel_free(ga_state->channel); |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 1184 | |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 1185 | if (daemonize) { |
Michael Roth | f789aa7 | 2012-04-18 16:28:01 -0500 | [diff] [blame] | 1186 | unlink(pid_filepath); |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 1187 | } |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 1188 | return 0; |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 1189 | |
| 1190 | out_bad: |
| 1191 | if (daemonize) { |
Michael Roth | f789aa7 | 2012-04-18 16:28:01 -0500 | [diff] [blame] | 1192 | unlink(pid_filepath); |
Michael Roth | 125b310 | 2012-01-19 00:18:20 -0600 | [diff] [blame] | 1193 | } |
| 1194 | return EXIT_FAILURE; |
Michael Roth | 48ff7a6 | 2011-07-20 15:19:37 -0500 | [diff] [blame] | 1195 | } |