qemu-ga: move qemu-ga files to qga/

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 0 insertions, 901 deletions

diff --git a/qemu-ga.c b/qemu-ga.c
deleted file mode 100644
index 9b59a52..0000000
--- a/qemu-ga.c
+++ /dev/null
@@ -1,901 +0,0 @@
-/*
- * QEMU Guest Agent
- *
- * Copyright IBM Corp. 2011
- *
- * Authors:
- *  Adam Litke        <aglitke@linux.vnet.ibm.com>
- *  Michael Roth      <mdroth@linux.vnet.ibm.com>
- *
- * This work is licensed under the terms of the GNU GPL, version 2 or later.
- * See the COPYING file in the top-level directory.
- */
-#include <stdlib.h>
-#include <stdio.h>
-#include <stdbool.h>
-#include <glib.h>
-#include <getopt.h>
-#ifndef _WIN32
-#include <syslog.h>
-#include <sys/wait.h>
-#include <sys/stat.h>
-#endif
-#include "json-streamer.h"
-#include "json-parser.h"
-#include "qint.h"
-#include "qjson.h"
-#include "qga/guest-agent-core.h"
-#include "module.h"
-#include "signal.h"
-#include "qerror.h"
-#include "qapi/qmp-core.h"
-#include "qga/channel.h"
-#ifdef _WIN32
-#include "qga/service-win32.h"
-#include <windows.h>
-#endif
-
-#ifndef _WIN32
-#define QGA_VIRTIO_PATH_DEFAULT "/dev/virtio-ports/org.qemu.guest_agent.0"
-#else
-#define QGA_VIRTIO_PATH_DEFAULT "\\\\.\\Global\\org.qemu.guest_agent.0"
-#endif
-#define QGA_STATEDIR_DEFAULT CONFIG_QEMU_LOCALSTATEDIR "/run"
-#define QGA_PIDFILE_DEFAULT QGA_STATEDIR_DEFAULT "/qemu-ga.pid"
-#define QGA_SENTINEL_BYTE 0xFF
-
-struct GAState {
-    JSONMessageParser parser;
-    GMainLoop *main_loop;
-    GAChannel *channel;
-    bool virtio; /* fastpath to check for virtio to deal with poll() quirks */
-    GACommandState *command_state;
-    GLogLevelFlags log_level;
-    FILE *log_file;
-    bool logging_enabled;
-#ifdef _WIN32
-    GAService service;
-#endif
-    bool delimit_response;
-    bool frozen;
-    GList *blacklist;
-    const char *state_filepath_isfrozen;
-    struct {
-        const char *log_filepath;
-        const char *pid_filepath;
-    } deferred_options;
-};
-
-struct GAState *ga_state;
-
-/* commands that are safe to issue while filesystems are frozen */
-static const char *ga_freeze_whitelist[] = {
-    "guest-ping",
-    "guest-info",
-    "guest-sync",
-    "guest-fsfreeze-status",
-    "guest-fsfreeze-thaw",
-    NULL
-};
-
-#ifdef _WIN32
-DWORD WINAPI service_ctrl_handler(DWORD ctrl, DWORD type, LPVOID data,
-                                  LPVOID ctx);
-VOID WINAPI service_main(DWORD argc, TCHAR *argv[]);
-#endif
-
-static void quit_handler(int sig)
-{
-    /* if we're frozen, don't exit unless we're absolutely forced to,
-     * because it's basically impossible for graceful exit to complete
-     * unless all log/pid files are on unfreezable filesystems. there's
-     * also a very likely chance killing the agent before unfreezing
-     * the filesystems is a mistake (or will be viewed as one later).
-     */
-    if (ga_is_frozen(ga_state)) {
-        return;
-    }
-    g_debug("received signal num %d, quitting", sig);
-
-    if (g_main_loop_is_running(ga_state->main_loop)) {
-        g_main_loop_quit(ga_state->main_loop);
-    }
-}
-
-#ifndef _WIN32
-static gboolean register_signal_handlers(void)
-{
-    struct sigaction sigact;
-    int ret;
-
-    memset(&sigact, 0, sizeof(struct sigaction));
-    sigact.sa_handler = quit_handler;
-
-    ret = sigaction(SIGINT, &sigact, NULL);
-    if (ret == -1) {
-        g_error("error configuring signal handler: %s", strerror(errno));
-    }
-    ret = sigaction(SIGTERM, &sigact, NULL);
-    if (ret == -1) {
-        g_error("error configuring signal handler: %s", strerror(errno));
-    }
-
-    return true;
-}
-
-/* TODO: use this in place of all post-fork() fclose(std*) callers */
-void reopen_fd_to_null(int fd)
-{
-    int nullfd;
-
-    nullfd = open("/dev/null", O_RDWR);
-    if (nullfd < 0) {
-        return;
-    }
-
-    dup2(nullfd, fd);
-
-    if (nullfd != fd) {
-        close(nullfd);
-    }
-}
-#endif
-
-static void usage(const char *cmd)
-{
-    printf(
-"Usage: %s [-m <method> -p <path>] [<options>]\n"
-"QEMU Guest Agent %s\n"
-"\n"
-"  -m, --method      transport method: one of unix-listen, virtio-serial, or\n"
-"                    isa-serial (virtio-serial is the default)\n"
-"  -p, --path        device/socket path (the default for virtio-serial is:\n"
-"                    %s)\n"
-"  -l, --logfile     set logfile path, logs to stderr by default\n"
-"  -f, --pidfile     specify pidfile (default is %s)\n"
-"  -t, --statedir    specify dir to store state information (absolute paths\n"
-"                    only, default is %s)\n"
-"  -v, --verbose     log extra debugging information\n"
-"  -V, --version     print version information and exit\n"
-"  -d, --daemonize   become a daemon\n"
-#ifdef _WIN32
-"  -s, --service     service commands: install, uninstall\n"
-#endif
-"  -b, --blacklist   comma-separated list of RPCs to disable (no spaces, \"?\"\n"
-"                    to list available RPCs)\n"
-"  -h, --help        display this help and exit\n"
-"\n"
-"Report bugs to <mdroth@linux.vnet.ibm.com>\n"
-    , cmd, QEMU_VERSION, QGA_VIRTIO_PATH_DEFAULT, QGA_PIDFILE_DEFAULT,
-    QGA_STATEDIR_DEFAULT);
-}
-
-static const char *ga_log_level_str(GLogLevelFlags level)
-{
-    switch (level & G_LOG_LEVEL_MASK) {
-        case G_LOG_LEVEL_ERROR:
-            return "error";
-        case G_LOG_LEVEL_CRITICAL:
-            return "critical";
-        case G_LOG_LEVEL_WARNING:
-            return "warning";
-        case G_LOG_LEVEL_MESSAGE:
-            return "message";
-        case G_LOG_LEVEL_INFO:
-            return "info";
-        case G_LOG_LEVEL_DEBUG:
-            return "debug";
-        default:
-            return "user";
-    }
-}
-
-bool ga_logging_enabled(GAState *s)
-{
-    return s->logging_enabled;
-}
-
-void ga_disable_logging(GAState *s)
-{
-    s->logging_enabled = false;
-}
-
-void ga_enable_logging(GAState *s)
-{
-    s->logging_enabled = true;
-}
-
-static void ga_log(const gchar *domain, GLogLevelFlags level,
-                   const gchar *msg, gpointer opaque)
-{
-    GAState *s = opaque;
-    GTimeVal time;
-    const char *level_str = ga_log_level_str(level);
-
-    if (!ga_logging_enabled(s)) {
-        return;
-    }
-
-    level &= G_LOG_LEVEL_MASK;
-#ifndef _WIN32
-    if (domain && strcmp(domain, "syslog") == 0) {
-        syslog(LOG_INFO, "%s: %s", level_str, msg);
-    } else if (level & s->log_level) {
-#else
-    if (level & s->log_level) {
-#endif
-        g_get_current_time(&time);
-        fprintf(s->log_file,
-                "%lu.%lu: %s: %s\n", time.tv_sec, time.tv_usec, level_str, msg);
-        fflush(s->log_file);
-    }
-}
-
-void ga_set_response_delimited(GAState *s)
-{
-    s->delimit_response = true;
-}
-
-#ifndef _WIN32
-static bool ga_open_pidfile(const char *pidfile)
-{
-    int pidfd;
-    char pidstr[32];
-
-    pidfd = open(pidfile, O_CREAT|O_WRONLY, S_IRUSR|S_IWUSR);
-    if (pidfd == -1 || lockf(pidfd, F_TLOCK, 0)) {
-        g_critical("Cannot lock pid file, %s", strerror(errno));
-        if (pidfd != -1) {
-            close(pidfd);
-        }
-        return false;
-    }
-
-    if (ftruncate(pidfd, 0) || lseek(pidfd, 0, SEEK_SET)) {
-        g_critical("Failed to truncate pid file");
-        goto fail;
-    }
-    snprintf(pidstr, sizeof(pidstr), "%d\n", getpid());
-    if (write(pidfd, pidstr, strlen(pidstr)) != strlen(pidstr)) {
-        g_critical("Failed to write pid file");
-        goto fail;
-    }
-
-    return true;
-
-fail:
-    unlink(pidfile);
-    return false;
-}
-#else /* _WIN32 */
-static bool ga_open_pidfile(const char *pidfile)
-{
-    return true;
-}
-#endif
-
-static gint ga_strcmp(gconstpointer str1, gconstpointer str2)
-{
-    return strcmp(str1, str2);
-}
-
-/* disable commands that aren't safe for fsfreeze */
-static void ga_disable_non_whitelisted(void)
-{
-    char **list_head, **list;
-    bool whitelisted;
-    int i;
-
-    list_head = list = qmp_get_command_list();
-    while (*list != NULL) {
-        whitelisted = false;
-        i = 0;
-        while (ga_freeze_whitelist[i] != NULL) {
-            if (strcmp(*list, ga_freeze_whitelist[i]) == 0) {
-                whitelisted = true;
-            }
-            i++;
-        }
-        if (!whitelisted) {
-            g_debug("disabling command: %s", *list);
-            qmp_disable_command(*list);
-        }
-        g_free(*list);
-        list++;
-    }
-    g_free(list_head);
-}
-
-/* [re-]enable all commands, except those explicitly blacklisted by user */
-static void ga_enable_non_blacklisted(GList *blacklist)
-{
-    char **list_head, **list;
-
-    list_head = list = qmp_get_command_list();
-    while (*list != NULL) {
-        if (g_list_find_custom(blacklist, *list, ga_strcmp) == NULL &&
-            !qmp_command_is_enabled(*list)) {
-            g_debug("enabling command: %s", *list);
-            qmp_enable_command(*list);
-        }
-        g_free(*list);
-        list++;
-    }
-    g_free(list_head);
-}
-
-static bool ga_create_file(const char *path)
-{
-    int fd = open(path, O_CREAT | O_WRONLY, S_IWUSR | S_IRUSR);
-    if (fd == -1) {
-        g_warning("unable to open/create file %s: %s", path, strerror(errno));
-        return false;
-    }
-    close(fd);
-    return true;
-}
-
-static bool ga_delete_file(const char *path)
-{
-    int ret = unlink(path);
-    if (ret == -1) {
-        g_warning("unable to delete file: %s: %s", path, strerror(errno));
-        return false;
-    }
-
-    return true;
-}
-
-bool ga_is_frozen(GAState *s)
-{
-    return s->frozen;
-}
-
-void ga_set_frozen(GAState *s)
-{
-    if (ga_is_frozen(s)) {
-        return;
-    }
-    /* disable all non-whitelisted (for frozen state) commands */
-    ga_disable_non_whitelisted();
-    g_warning("disabling logging due to filesystem freeze");
-    ga_disable_logging(s);
-    s->frozen = true;
-    if (!ga_create_file(s->state_filepath_isfrozen)) {
-        g_warning("unable to create %s, fsfreeze may not function properly",
-                  s->state_filepath_isfrozen);
-    }
-}
-
-void ga_unset_frozen(GAState *s)
-{
-    if (!ga_is_frozen(s)) {
-        return;
-    }
-
-    /* if we delayed creation/opening of pid/log files due to being
-     * in a frozen state at start up, do it now
-     */
-    if (s->deferred_options.log_filepath) {
-        s->log_file = fopen(s->deferred_options.log_filepath, "a");
-        if (!s->log_file) {
-            s->log_file = stderr;
-        }
-        s->deferred_options.log_filepath = NULL;
-    }
-    ga_enable_logging(s);
-    g_warning("logging re-enabled due to filesystem unfreeze");
-    if (s->deferred_options.pid_filepath) {
-        if (!ga_open_pidfile(s->deferred_options.pid_filepath)) {
-            g_warning("failed to create/open pid file");
-        }
-        s->deferred_options.pid_filepath = NULL;
-    }
-
-    /* enable all disabled, non-blacklisted commands */
-    ga_enable_non_blacklisted(s->blacklist);
-    s->frozen = false;
-    if (!ga_delete_file(s->state_filepath_isfrozen)) {
-        g_warning("unable to delete %s, fsfreeze may not function properly",
-                  s->state_filepath_isfrozen);
-    }
-}
-
-static void become_daemon(const char *pidfile)
-{
-#ifndef _WIN32
-    pid_t pid, sid;
-
-    pid = fork();
-    if (pid < 0) {
-        exit(EXIT_FAILURE);
-    }
-    if (pid > 0) {
-        exit(EXIT_SUCCESS);
-    }
-
-    if (pidfile) {
-        if (!ga_open_pidfile(pidfile)) {
-            g_critical("failed to create pidfile");
-            exit(EXIT_FAILURE);
-        }
-    }
-
-    umask(0);
-    sid = setsid();
-    if (sid < 0) {
-        goto fail;
-    }
-    if ((chdir("/")) < 0) {
-        goto fail;
-    }
-
-    reopen_fd_to_null(STDIN_FILENO);
-    reopen_fd_to_null(STDOUT_FILENO);
-    reopen_fd_to_null(STDERR_FILENO);
-    return;
-
-fail:
-    if (pidfile) {
-        unlink(pidfile);
-    }
-    g_critical("failed to daemonize");
-    exit(EXIT_FAILURE);
-#endif
-}
-
-static int send_response(GAState *s, QObject *payload)
-{
-    const char *buf;
-    QString *payload_qstr, *response_qstr;
-    GIOStatus status;
-
-    g_assert(payload && s->channel);
-
-    payload_qstr = qobject_to_json(payload);
-    if (!payload_qstr) {
-        return -EINVAL;
-    }
-
-    if (s->delimit_response) {
-        s->delimit_response = false;
-        response_qstr = qstring_new();
-        qstring_append_chr(response_qstr, QGA_SENTINEL_BYTE);
-        qstring_append(response_qstr, qstring_get_str(payload_qstr));
-        QDECREF(payload_qstr);
-    } else {
-        response_qstr = payload_qstr;
-    }
-
-    qstring_append_chr(response_qstr, '\n');
-    buf = qstring_get_str(response_qstr);
-    status = ga_channel_write_all(s->channel, buf, strlen(buf));
-    QDECREF(response_qstr);
-    if (status != G_IO_STATUS_NORMAL) {
-        return -EIO;
-    }
-
-    return 0;
-}
-
-static void process_command(GAState *s, QDict *req)
-{
-    QObject *rsp = NULL;
-    int ret;
-
-    g_assert(req);
-    g_debug("processing command");
-    rsp = qmp_dispatch(QOBJECT(req));
-    if (rsp) {
-        ret = send_response(s, rsp);
-        if (ret) {
-            g_warning("error sending response: %s", strerror(ret));
-        }
-        qobject_decref(rsp);
-    }
-}
-
-/* handle requests/control events coming in over the channel */
-static void process_event(JSONMessageParser *parser, QList *tokens)
-{
-    GAState *s = container_of(parser, GAState, parser);
-    QObject *obj;
-    QDict *qdict;
-    Error *err = NULL;
-    int ret;
-
-    g_assert(s && parser);
-
-    g_debug("process_event: called");
-    obj = json_parser_parse_err(tokens, NULL, &err);
-    if (err || !obj || qobject_type(obj) != QTYPE_QDICT) {
-        qobject_decref(obj);
-        qdict = qdict_new();
-        if (!err) {
-            g_warning("failed to parse event: unknown error");
-            error_set(&err, QERR_JSON_PARSING);
-        } else {
-            g_warning("failed to parse event: %s", error_get_pretty(err));
-        }
-        qdict_put_obj(qdict, "error", qmp_build_error_object(err));
-        error_free(err);
-    } else {
-        qdict = qobject_to_qdict(obj);
-    }
-
-    g_assert(qdict);
-
-    /* handle host->guest commands */
-    if (qdict_haskey(qdict, "execute")) {
-        process_command(s, qdict);
-    } else {
-        if (!qdict_haskey(qdict, "error")) {
-            QDECREF(qdict);
-            qdict = qdict_new();
-            g_warning("unrecognized payload format");
-            error_set(&err, QERR_UNSUPPORTED);
-            qdict_put_obj(qdict, "error", qmp_build_error_object(err));
-            error_free(err);
-        }
-        ret = send_response(s, QOBJECT(qdict));
-        if (ret) {
-            g_warning("error sending error response: %s", strerror(ret));
-        }
-    }
-
-    QDECREF(qdict);
-}
-
-/* false return signals GAChannel to close the current client connection */
-static gboolean channel_event_cb(GIOCondition condition, gpointer data)
-{
-    GAState *s = data;
-    gchar buf[QGA_READ_COUNT_DEFAULT+1];
-    gsize count;
-    GError *err = NULL;
-    GIOStatus status = ga_channel_read(s->channel, buf, QGA_READ_COUNT_DEFAULT, &count);
-    if (err != NULL) {
-        g_warning("error reading channel: %s", err->message);
-        g_error_free(err);
-        return false;
-    }
-    switch (status) {
-    case G_IO_STATUS_ERROR:
-        g_warning("error reading channel");
-        return false;
-    case G_IO_STATUS_NORMAL:
-        buf[count] = 0;
-        g_debug("read data, count: %d, data: %s", (int)count, buf);
-        json_message_parser_feed(&s->parser, (char *)buf, (int)count);
-        break;
-    case G_IO_STATUS_EOF:
-        g_debug("received EOF");
-        if (!s->virtio) {
-            return false;
-        }
-    case G_IO_STATUS_AGAIN:
-        /* virtio causes us to spin here when no process is attached to
-         * host-side chardev. sleep a bit to mitigate this
-         */
-        if (s->virtio) {
-            usleep(100*1000);
-        }
-        return true;
-    default:
-        g_warning("unknown channel read status, closing");
-        return false;
-    }
-    return true;
-}
-
-static gboolean channel_init(GAState *s, const gchar *method, const gchar *path)
-{
-    GAChannelMethod channel_method;
-
-    if (method == NULL) {
-        method = "virtio-serial";
-    }
-
-    if (path == NULL) {
-        if (strcmp(method, "virtio-serial") != 0) {
-            g_critical("must specify a path for this channel");
-            return false;
-        }
-        /* try the default path for the virtio-serial port */
-        path = QGA_VIRTIO_PATH_DEFAULT;
-    }
-
-    if (strcmp(method, "virtio-serial") == 0) {
-        s->virtio = true; /* virtio requires special handling in some cases */
-        channel_method = GA_CHANNEL_VIRTIO_SERIAL;
-    } else if (strcmp(method, "isa-serial") == 0) {
-        channel_method = GA_CHANNEL_ISA_SERIAL;
-    } else if (strcmp(method, "unix-listen") == 0) {
-        channel_method = GA_CHANNEL_UNIX_LISTEN;
-    } else {
-        g_critical("unsupported channel method/type: %s", method);
-        return false;
-    }
-
-    s->channel = ga_channel_new(channel_method, path, channel_event_cb, s);
-    if (!s->channel) {
-        g_critical("failed to create guest agent channel");
-        return false;
-    }
-
-    return true;
-}
-
-#ifdef _WIN32
-DWORD WINAPI service_ctrl_handler(DWORD ctrl, DWORD type, LPVOID data,
-                                  LPVOID ctx)
-{
-    DWORD ret = NO_ERROR;
-    GAService *service = &ga_state->service;
-
-    switch (ctrl)
-    {
-        case SERVICE_CONTROL_STOP:
-        case SERVICE_CONTROL_SHUTDOWN:
-            quit_handler(SIGTERM);
-            service->status.dwCurrentState = SERVICE_STOP_PENDING;
-            SetServiceStatus(service->status_handle, &service->status);
-            break;
-
-        default:
-            ret = ERROR_CALL_NOT_IMPLEMENTED;
-    }
-    return ret;
-}
-
-VOID WINAPI service_main(DWORD argc, TCHAR *argv[])
-{
-    GAService *service = &ga_state->service;
-
-    service->status_handle = RegisterServiceCtrlHandlerEx(QGA_SERVICE_NAME,
-        service_ctrl_handler, NULL);
-
-    if (service->status_handle == 0) {
-        g_critical("Failed to register extended requests function!\n");
-        return;
-    }
-
-    service->status.dwServiceType = SERVICE_WIN32;
-    service->status.dwCurrentState = SERVICE_RUNNING;
-    service->status.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN;
-    service->status.dwWin32ExitCode = NO_ERROR;
-    service->status.dwServiceSpecificExitCode = NO_ERROR;
-    service->status.dwCheckPoint = 0;
-    service->status.dwWaitHint = 0;
-    SetServiceStatus(service->status_handle, &service->status);
-
-    g_main_loop_run(ga_state->main_loop);
-
-    service->status.dwCurrentState = SERVICE_STOPPED;
-    SetServiceStatus(service->status_handle, &service->status);
-}
-#endif
-
-int main(int argc, char **argv)
-{
-    const char *sopt = "hVvdm:p:l:f:b:s:t:";
-    const char *method = NULL, *path = NULL;
-    const char *log_filepath = NULL;
-    const char *pid_filepath = QGA_PIDFILE_DEFAULT;
-    const char *state_dir = QGA_STATEDIR_DEFAULT;
-#ifdef _WIN32
-    const char *service = NULL;
-#endif
-    const struct option lopt[] = {
-        { "help", 0, NULL, 'h' },
-        { "version", 0, NULL, 'V' },
-        { "logfile", 1, NULL, 'l' },
-        { "pidfile", 1, NULL, 'f' },
-        { "verbose", 0, NULL, 'v' },
-        { "method", 1, NULL, 'm' },
-        { "path", 1, NULL, 'p' },
-        { "daemonize", 0, NULL, 'd' },
-        { "blacklist", 1, NULL, 'b' },
-#ifdef _WIN32
-        { "service", 1, NULL, 's' },
-#endif
-        { "statedir", 1, NULL, 't' },
-        { NULL, 0, NULL, 0 }
-    };
-    int opt_ind = 0, ch, daemonize = 0, i, j, len;
-    GLogLevelFlags log_level = G_LOG_LEVEL_ERROR | G_LOG_LEVEL_CRITICAL;
-    GList *blacklist = NULL;
-    GAState *s;
-
-    module_call_init(MODULE_INIT_QAPI);
-
-    while ((ch = getopt_long(argc, argv, sopt, lopt, &opt_ind)) != -1) {
-        switch (ch) {
-        case 'm':
-            method = optarg;
-            break;
-        case 'p':
-            path = optarg;
-            break;
-        case 'l':
-            log_filepath = optarg;
-            break;
-        case 'f':
-            pid_filepath = optarg;
-            break;
-        case 't':
-             state_dir = optarg;
-             break;
-        case 'v':
-            /* enable all log levels */
-            log_level = G_LOG_LEVEL_MASK;
-            break;
-        case 'V':
-            printf("QEMU Guest Agent %s\n", QEMU_VERSION);
-            return 0;
-        case 'd':
-            daemonize = 1;
-            break;
-        case 'b': {
-            char **list_head, **list;
-            if (is_help_option(optarg)) {
-                list_head = list = qmp_get_command_list();
-                while (*list != NULL) {
-                    printf("%s\n", *list);
-                    g_free(*list);
-                    list++;
-                }
-                g_free(list_head);
-                return 0;
-            }
-            for (j = 0, i = 0, len = strlen(optarg); i < len; i++) {
-                if (optarg[i] == ',') {
-                    optarg[i] = 0;
-                    blacklist = g_list_append(blacklist, &optarg[j]);
-                    j = i + 1;
-                }
-            }
-            if (j < i) {
-                blacklist = g_list_append(blacklist, &optarg[j]);
-            }
-            break;
-        }
-#ifdef _WIN32
-        case 's':
-            service = optarg;
-            if (strcmp(service, "install") == 0) {
-                return ga_install_service(path, log_filepath);
-            } else if (strcmp(service, "uninstall") == 0) {
-                return ga_uninstall_service();
-            } else {
-                printf("Unknown service command.\n");
-                return EXIT_FAILURE;
-            }
-            break;
-#endif
-        case 'h':
-            usage(argv[0]);
-            return 0;
-        case '?':
-            g_print("Unknown option, try '%s --help' for more information.\n",
-                    argv[0]);
-            return EXIT_FAILURE;
-        }
-    }
-
-    s = g_malloc0(sizeof(GAState));
-    s->log_level = log_level;
-    s->log_file = stderr;
-    g_log_set_default_handler(ga_log, s);
-    g_log_set_fatal_mask(NULL, G_LOG_LEVEL_ERROR);
-    ga_enable_logging(s);
-    s->state_filepath_isfrozen = g_strdup_printf("%s/qga.state.isfrozen",
-                                                 state_dir);
-    s->frozen = false;
-#ifndef _WIN32
-    /* check if a previous instance of qemu-ga exited with filesystems' state
-     * marked as frozen. this could be a stale value (a non-qemu-ga process
-     * or reboot may have since unfrozen them), but better to require an
-     * uneeded unfreeze than to risk hanging on start-up
-     */
-    struct stat st;
-    if (stat(s->state_filepath_isfrozen, &st) == -1) {
-        /* it's okay if the file doesn't exist, but if we can't access for
-         * some other reason, such as permissions, there's a configuration
-         * that needs to be addressed. so just bail now before we get into
-         * more trouble later
-         */
-        if (errno != ENOENT) {
-            g_critical("unable to access state file at path %s: %s",
-                       s->state_filepath_isfrozen, strerror(errno));
-            return EXIT_FAILURE;
-        }
-    } else {
-        g_warning("previous instance appears to have exited with frozen"
-                  " filesystems. deferring logging/pidfile creation and"
-                  " disabling non-fsfreeze-safe commands until"
-                  " guest-fsfreeze-thaw is issued, or filesystems are"
-                  " manually unfrozen and the file %s is removed",
-                  s->state_filepath_isfrozen);
-        s->frozen = true;
-    }
-#endif
-
-    if (ga_is_frozen(s)) {
-        if (daemonize) {
-            /* delay opening/locking of pidfile till filesystem are unfrozen */
-            s->deferred_options.pid_filepath = pid_filepath;
-            become_daemon(NULL);
-        }
-        if (log_filepath) {
-            /* delay opening the log file till filesystems are unfrozen */
-            s->deferred_options.log_filepath = log_filepath;
-        }
-        ga_disable_logging(s);
-        ga_disable_non_whitelisted();
-    } else {
-        if (daemonize) {
-            become_daemon(pid_filepath);
-        }
-        if (log_filepath) {
-            FILE *log_file = fopen(log_filepath, "a");
-            if (!log_file) {
-                g_critical("unable to open specified log file: %s",
-                           strerror(errno));
-                goto out_bad;
-            }
-            s->log_file = log_file;
-        }
-    }
-
-    if (blacklist) {
-        s->blacklist = blacklist;
-        do {
-            g_debug("disabling command: %s", (char *)blacklist->data);
-            qmp_disable_command(blacklist->data);
-            blacklist = g_list_next(blacklist);
-        } while (blacklist);
-    }
-    s->command_state = ga_command_state_new();
-    ga_command_state_init(s, s->command_state);
-    ga_command_state_init_all(s->command_state);
-    json_message_parser_init(&s->parser, process_event);
-    ga_state = s;
-#ifndef _WIN32
-    if (!register_signal_handlers()) {
-        g_critical("failed to register signal handlers");
-        goto out_bad;
-    }
-#endif
-
-    s->main_loop = g_main_loop_new(NULL, false);
-    if (!channel_init(ga_state, method, path)) {
-        g_critical("failed to initialize guest agent channel");
-        goto out_bad;
-    }
-#ifndef _WIN32
-    g_main_loop_run(ga_state->main_loop);
-#else
-    if (daemonize) {
-        SERVICE_TABLE_ENTRY service_table[] = {
-            { (char *)QGA_SERVICE_NAME, service_main }, { NULL, NULL } };
-        StartServiceCtrlDispatcher(service_table);
-    } else {
-        g_main_loop_run(ga_state->main_loop);
-    }
-#endif
-
-    ga_command_state_cleanup_all(ga_state->command_state);
-    ga_channel_free(ga_state->channel);
-
-    if (daemonize) {
-        unlink(pid_filepath);
-    }
-    return 0;
-
-out_bad:
-    if (daemonize) {
-        unlink(pid_filepath);
-    }
-    return EXIT_FAILURE;
-}