#include "qemu/bswap.h"
#ifdef _WIN32
#include "qga/service-win32.h"
-#include <windows.h>
+#include "qga/vss-win32.h"
#endif
#ifdef __linux__
#include <linux/fs.h>
#ifndef _WIN32
#define QGA_VIRTIO_PATH_DEFAULT "/dev/virtio-ports/org.qemu.guest_agent.0"
+#define QGA_STATE_RELATIVE_DIR "run"
+#define QGA_SERIAL_PATH_DEFAULT "/dev/ttyS0"
#else
#define QGA_VIRTIO_PATH_DEFAULT "\\\\.\\Global\\org.qemu.guest_agent.0"
+#define QGA_STATE_RELATIVE_DIR "qemu-ga"
+#define QGA_SERIAL_PATH_DEFAULT "COM1"
#endif
-#define QGA_STATEDIR_DEFAULT CONFIG_QEMU_LOCALSTATEDIR "/run"
-#define QGA_PIDFILE_DEFAULT QGA_STATEDIR_DEFAULT "/qemu-ga.pid"
#ifdef CONFIG_FSFREEZE
#define QGA_FSFREEZE_HOOK_DEFAULT CONFIG_QEMU_CONFDIR "/fsfreeze-hook"
#endif
#define QGA_SENTINEL_BYTE 0xFF
+static struct {
+ const char *state_dir;
+ const char *pidfile;
+} dfl_pathnames;
+
typedef struct GAPersistentState {
#define QGA_PSTATE_DEFAULT_FD_COUNTER 1000
int64_t fd_counter;
VOID WINAPI service_main(DWORD argc, TCHAR *argv[]);
#endif
+static void
+init_dfl_pathnames(void)
+{
+ g_assert(dfl_pathnames.state_dir == NULL);
+ g_assert(dfl_pathnames.pidfile == NULL);
+ dfl_pathnames.state_dir = qemu_get_local_state_pathname(
+ QGA_STATE_RELATIVE_DIR);
+ dfl_pathnames.pidfile = qemu_get_local_state_pathname(
+ QGA_STATE_RELATIVE_DIR G_DIR_SEPARATOR_S "qemu-ga.pid");
+}
+
static void quit_handler(int sig)
{
/* if we're frozen, don't exit unless we're absolutely forced to,
" -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"
+" the default for isa-serial is:\n"
" %s)\n"
" -l, --logfile set logfile path, logs to stderr by default\n"
" -f, --pidfile specify pidfile (default is %s)\n"
" -h, --help display this help and exit\n"
"\n"
- , cmd, QEMU_VERSION, QGA_VIRTIO_PATH_DEFAULT, QGA_PIDFILE_DEFAULT,
+ , cmd, QEMU_VERSION, QGA_VIRTIO_PATH_DEFAULT, QGA_SERIAL_PATH_DEFAULT,
+ dfl_pathnames.pidfile,
#ifdef CONFIG_FSFREEZE
QGA_FSFREEZE_HOOK_DEFAULT,
#endif
- QGA_STATEDIR_DEFAULT);
+ dfl_pathnames.state_dir);
}
static const char *ga_log_level_str(GLogLevelFlags level)
}
/* disable commands that aren't safe for fsfreeze */
-static void ga_disable_non_whitelisted(void)
+static void ga_disable_non_whitelisted(QmpCommand *cmd, void *opaque)
{
- 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);
+ bool whitelisted = false;
+ int i = 0;
+ const char *name = qmp_command_name(cmd);
+
+ while (ga_freeze_whitelist[i] != NULL) {
+ if (strcmp(name, ga_freeze_whitelist[i]) == 0) {
+ whitelisted = true;
}
- g_free(*list);
- list++;
+ i++;
+ }
+ if (!whitelisted) {
+ g_debug("disabling command: %s", name);
+ qmp_disable_command(name);
}
- g_free(list_head);
}
/* [re-]enable all commands, except those explicitly blacklisted by user */
-static void ga_enable_non_blacklisted(GList *blacklist)
+static void ga_enable_non_blacklisted(QmpCommand *cmd, void *opaque)
{
- 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++;
+ GList *blacklist = opaque;
+ const char *name = qmp_command_name(cmd);
+
+ if (g_list_find_custom(blacklist, name, ga_strcmp) == NULL &&
+ !qmp_command_is_enabled(cmd)) {
+ g_debug("enabling command: %s", name);
+ qmp_enable_command(name);
}
- g_free(list_head);
}
static bool ga_create_file(const char *path)
return;
}
/* disable all non-whitelisted (for frozen state) commands */
- ga_disable_non_whitelisted();
+ qmp_for_each_command(ga_disable_non_whitelisted, NULL);
g_warning("disabling logging due to filesystem freeze");
ga_disable_logging(s);
s->frozen = true;
}
/* enable all disabled, non-blacklisted commands */
- ga_enable_non_blacklisted(s->blacklist);
+ qmp_for_each_command(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",
}
}
- umask(0);
+ umask(S_IRWXG | S_IRWXO);
sid = setsid();
if (sid < 0) {
goto fail;
error_free(err);
}
ret = send_response(s, QOBJECT(qdict));
- if (ret) {
- g_warning("error sending error response: %s", strerror(ret));
+ if (ret < 0) {
+ g_warning("error sending error response: %s", strerror(-ret));
}
}
}
if (path == NULL) {
- if (strcmp(method, "virtio-serial") != 0) {
+ if (strcmp(method, "virtio-serial") == 0 ) {
+ /* try the default path for the virtio-serial port */
+ path = QGA_VIRTIO_PATH_DEFAULT;
+ } else if (strcmp(method, "isa-serial") == 0){
+ /* try the default path for the serial port - COM1 */
+ path = QGA_SERIAL_PATH_DEFAULT;
+ } else {
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) {
g_assert(!ga_is_frozen(s));
handle = s->pstate.fd_counter++;
- if (s->pstate.fd_counter < 0) {
- s->pstate.fd_counter = 0;
+
+ /* This should never happen on a reasonable timeframe, as guest-file-open
+ * would have to be issued 2^63 times */
+ if (s->pstate.fd_counter == INT64_MAX) {
+ abort();
}
+
if (!write_persistent_state(&s->pstate, s->pstate_filepath)) {
error_setg(errp, "failed to commit persistent state to disk");
+ return -1;
}
return handle;
}
+static void ga_print_cmd(QmpCommand *cmd, void *opaque)
+{
+ printf("%s\n", qmp_command_name(cmd));
+}
+
int main(int argc, char **argv)
{
const char *sopt = "hVvdm:p:l:f:F::b:s:t:";
const char *method = NULL, *path = NULL;
const char *log_filepath = NULL;
- const char *pid_filepath = QGA_PIDFILE_DEFAULT;
+ const char *pid_filepath;
#ifdef CONFIG_FSFREEZE
const char *fsfreeze_hook = NULL;
#endif
- const char *state_dir = QGA_STATEDIR_DEFAULT;
+ const char *state_dir;
#ifdef _WIN32
const char *service = NULL;
#endif
module_call_init(MODULE_INIT_QAPI);
+ init_dfl_pathnames();
+ pid_filepath = dfl_pathnames.pidfile;
+ state_dir = dfl_pathnames.state_dir;
+
while ((ch = getopt_long(argc, argv, sopt, lopt, &opt_ind)) != -1) {
switch (ch) {
case 'm':
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);
+ qmp_for_each_command(ga_print_cmd, NULL);
return 0;
}
for (j = 0, i = 0, len = strlen(optarg); i < len; i++) {
case 's':
service = optarg;
if (strcmp(service, "install") == 0) {
- return ga_install_service(path, log_filepath);
+ const char *fixed_state_dir;
+
+ /* If the user passed the "-t" option, we save that state dir
+ * in the service. Otherwise we let the service fetch the state
+ * dir from the environment when it starts.
+ */
+ fixed_state_dir = (state_dir == dfl_pathnames.state_dir) ?
+ NULL :
+ state_dir;
+ if (ga_install_vss_provider()) {
+ return EXIT_FAILURE;
+ }
+ if (ga_install_service(path, log_filepath, fixed_state_dir)) {
+ return EXIT_FAILURE;
+ }
+ return 0;
} else if (strcmp(service, "uninstall") == 0) {
+ ga_uninstall_vss_provider();
return ga_uninstall_service();
} else {
printf("Unknown service command.\n");
}
}
+#ifdef _WIN32
+ /* On win32 the state directory is application specific (be it the default
+ * or a user override). We got past the command line parsing; let's create
+ * the directory (with any intermediate directories). If we run into an
+ * error later on, we won't try to clean up the directory, it is considered
+ * persistent.
+ */
+ if (g_mkdir_with_parents(state_dir, S_IRWXU) == -1) {
+ g_critical("unable to create (an ancestor of) the state directory"
+ " '%s': %s", state_dir, strerror(errno));
+ return EXIT_FAILURE;
+ }
+#endif
+
s = g_malloc0(sizeof(GAState));
s->log_level = log_level;
s->log_file = stderr;
if (ga_is_frozen(s)) {
if (daemonize) {
- /* delay opening/locking of pidfile till filesystem are unfrozen */
+ /* delay opening/locking of pidfile till filesystems are unfrozen */
s->deferred_options.pid_filepath = pid_filepath;
become_daemon(NULL);
}
s->deferred_options.log_filepath = log_filepath;
}
ga_disable_logging(s);
- ga_disable_non_whitelisted();
+ qmp_for_each_command(ga_disable_non_whitelisted, NULL);
} else {
if (daemonize) {
become_daemon(pid_filepath);
goto out_bad;
}
+ blacklist = ga_command_blacklist_init(blacklist);
if (blacklist) {
s->blacklist = blacklist;
do {
projects / qemu.git / blobdiff