int fuse_main_real(int argc, char *argv[], const struct fuse_operations *op,
size_t op_size, void *user_data)
{
struct fuse *fuse;
char *mountpoint;
int multithreaded;
int res;
fuse = fuse_setup(argc, argv, op, op_size, &mountpoint,
&multithreaded, user_data);
if (fuse == NULL) {
rError("fuse is NULL");
return 1;
}
//MT loops are only supported on MSVC
if (multithreaded)
res = fuse_loop_mt(fuse);
else
res = fuse_loop(fuse);
rDebug("res=%i", res);
fuse_teardown(fuse, mountpoint);
rDebug("res=%i", res);
if (res < 0)
return 1;
return 0;
}
static int fuse_main_common(int argc, char *argv[],
const struct fuse_operations *op, size_t op_size,
void *user_data, int compat)
{
struct fuse *fuse;
char *mountpoint;
int multithreaded;
int res;
fuse = fuse_setup_common(argc, argv, op, op_size, &mountpoint,
&multithreaded, NULL, user_data, compat);
if (fuse == NULL)
return 1;
if (multithreaded)
res = fuse_loop_mt(fuse);
else
res = fuse_loop(fuse);
fuse_teardown_common(fuse, mountpoint);
if (res == -1)
return 1;
return 0;
}
int
fuse_main_real(int argc, char* argv[], const struct fuse_operations* op,
size_t opSize, void* userData)
{
printf("fuse_main_real(%d, %p, %p, %ld, %p)\n", argc, argv, op, opSize,
userData);
// Note: We use the fuse_*() functions here to initialize and run the
// file system, although some of them are merely dummies.
struct fuse_args args = FUSE_ARGS_INIT(argc, argv);
int result = 1;
// create the kernel channel
struct fuse_chan* channel = fuse_mount("/dummy", &args);
if (channel != NULL) {
// create the FUSE handle
struct fuse* fuseHandle = fuse_new(channel, &args, op, opSize,
userData);
if (fuseHandle != NULL) {
// run the main loop
result = fuse_loop_mt(fuseHandle);
fuse_destroy(fuseHandle);
}
fuse_unmount("/dummy", channel);
}
fuse_opt_free_args(&args);
return result;
}
int main(int argc, char** argv) {
struct fuse_args args = FUSE_ARGS_INIT(argc, argv);
char* mountpoint;
int multithreaded;
int foreground;
if (fuse_opt_parse(&args, NULL, tfs_opts, tfs_opt_proc) == -1)
return 1;
if (fuse_parse_cmdline(&args, &mountpoint, &multithreaded, &foreground) == -1)
return 1;
struct fuse_chan *ch = fuse_mount(mountpoint, &args);
if (!ch)
return 1;
struct fuse *fuse = fuse_new(ch, &args, &tfs_oper, sizeof(struct fuse_operations), NULL);
if (!fuse) {
fuse_unmount(mountpoint, ch);
return 1;
}
if (options.debug == 1 || foreground == 1) {
if (fuse_daemonize(foreground) != -1)
return 1;
}
if (fuse_set_signal_handlers(fuse_get_session(fuse)) == -1) {
fuse_unmount(mountpoint, ch);
fuse_destroy(fuse);
return 1;
}
initMultiCastListener();
if (multithreaded)
return fuse_loop_mt(fuse);
if (!options.debug)
fprintf(stderr, "Running single threaded and we are not debugging, your performance may suffer.\n");
return fuse_loop(fuse);
};
// run fskit with fuse
int fskit_fuse_main( struct fskit_fuse_state* state, int argc, char** argv ) {
int rc = 0;
// set up FUSE
struct fuse_args args = FUSE_ARGS_INIT(argc, argv);
struct fuse_chan* ch = NULL;
struct fuse* fs = NULL;
int multithreaded = 1;
int foreground = 0;
char* mountpoint = NULL;
// parse command-line...
rc = fuse_parse_cmdline( &args, &mountpoint, &multithreaded, &foreground );
if( rc < 0 ) {
fskit_error("fuse_parse_cmdline rc = %d\n", rc );
fuse_opt_free_args(&args);
return rc;
}
if( mountpoint == NULL ) {
fskit_error("%s", "No mountpoint given\n");
fuse_opt_free_args(&args);
return rc;
}
state->mountpoint = strdup( mountpoint );
// mount
ch = fuse_mount( mountpoint, &args );
if( ch == NULL ) {
rc = -errno;
fskit_error("fuse_mount failed, errno = %d\n", rc );
fuse_opt_free_args(&args);
if( rc == 0 ) {
rc = -EPERM;
}
return rc;
}
// create the filesystem
fs = fuse_new( ch, &args, &state->ops, sizeof(state->ops), state );
fuse_opt_free_args(&args);
if( fs == NULL ) {
// failed
rc = -errno;
fskit_error("fuse_new failed, errno = %d\n", rc );
fuse_unmount( mountpoint, ch );
if( rc == 0 ) {
rc = -EPERM;
}
return rc;
}
// daemonize if running in the background
fskit_debug("FUSE daemonize: foreground=%d\n", foreground);
rc = fuse_daemonize( foreground );
if( rc != 0 ) {
// failed
fskit_error("fuse_daemonize(%d) rc = %d\n", foreground, rc );
fuse_unmount( mountpoint, ch );
fuse_destroy( fs );
return rc;
}
// set up FUSE signal handlers
rc = fuse_set_signal_handlers( fuse_get_session(fs) );
if( rc < 0 ) {
// failed
fskit_error("fuse_set_signal_handlers rc = %d\n", rc );
fuse_unmount( mountpoint, ch );
fuse_destroy( fs );
return rc;
}
// if we have a post-mount callback, call it now, since FUSE is ready to receive requests
if( state->postmount != NULL ) {
rc = (*state->postmount)( state, state->postmount_cls );
if( rc != 0 ) {
fskit_error("fskit postmount callback rc = %d\n", rc );
fuse_unmount( mountpoint, ch );
fuse_destroy( fs );
return rc;
}
}
// run the filesystem--start processing requests
fskit_debug("%s", "FUSE main loop entered\n");
if( multithreaded ) {
rc = fuse_loop_mt( fs );
}
else {
rc = fuse_loop( fs );
}
fskit_debug("%s", "FUSE main loop finished\n");
fuse_teardown( fs, mountpoint );
return rc;
}
void _cachefs_fuse_run(struct cachefs *fs)
{
fuse_loop_mt(fs->fuse);
}
int main(int argc, char *argv[])
{
int ret = -1;
int lockfd = -1;
gboolean foreground = FALSE;
gboolean force_local_mode = FALSE;
gboolean wrote_pidfile = FALSE;
memdb_t *memdb = NULL;
dfsm_t *dcdb = NULL;
dfsm_t *status_fsm = NULL;
qb_log_init("pmxcfs", LOG_DAEMON, LOG_DEBUG);
/* remove default filter */
qb_log_filter_ctl(QB_LOG_SYSLOG, QB_LOG_FILTER_REMOVE,
QB_LOG_FILTER_FILE, "*", LOG_DEBUG);
qb_log_tags_stringify_fn_set(log_tags_stringify);
qb_log_ctl(QB_LOG_STDERR, QB_LOG_CONF_ENABLED, QB_TRUE);
update_qb_log_settings();
g_set_print_handler(glib_print_handler);
g_set_printerr_handler(glib_print_handler);
g_log_set_default_handler(glib_log_handler, NULL);
GOptionContext *context;
GOptionEntry entries[] = {
{ "debug", 'd', 0, G_OPTION_ARG_NONE, &cfs.debug, "Turn on debug messages", NULL },
{ "foreground", 'f', 0, G_OPTION_ARG_NONE, &foreground, "Do not daemonize server", NULL },
{ "local", 'l', 0, G_OPTION_ARG_NONE, &force_local_mode,
"Force local mode (ignore cluster.conf, force quorum)", NULL },
{ NULL },
};
context = g_option_context_new ("");
g_option_context_add_main_entries (context, entries, NULL);
GError *err = NULL;
if (!g_option_context_parse (context, &argc, &argv, &err))
{
cfs_critical("option parsing failed: %s", err->message);
g_error_free (err);
qb_log_fini();
exit (1);
}
g_option_context_free(context);
if (optind < argc) {
cfs_critical("too many arguments");
qb_log_fini();
exit(-1);
}
if (cfs.debug) {
update_qb_log_settings();
}
struct utsname utsname;
if (uname(&utsname) != 0) {
cfs_critical("Unable to read local node name");
qb_log_fini();
exit (-1);
}
for (int i=0; i < sizeof(utsname.nodename); i++) {
if (utsname.nodename[i] =='.') utsname.nodename[i] = 0;
}
cfs.nodename = g_strdup(utsname.nodename);
if (!(cfs.ip = lookup_node_ip(cfs.nodename))) {
cfs_critical("Unable to get local IP address");
qb_log_fini();
exit(-1);
}
struct group *www_data = getgrnam("www-data");
if (!www_data) {
cfs_critical("Unable to get www-data group ID");
qb_log_fini();
exit (-1);
}
cfs.gid = www_data->gr_gid;
g_thread_init(NULL);
umask(027);
mkdir(VARLIBDIR, 0755);
if ((lockfd = open(LOCKFILE, O_RDWR|O_CREAT|O_APPEND)) == -1) {
cfs_critical("unable to create lock '%s': %s", LOCKFILE, strerror (errno));
goto err;
}
for (int i = 10; i >= 0; i--) {
if (flock(lockfd, LOCK_EX|LOCK_NB) != 0) {
if (!i) {
cfs_critical("unable to aquire pmxcfs lock: %s", strerror (errno));
goto err;
}
if (i == 10)
cfs_message("unable to aquire pmxcfs lock - trying again");
sleep(1);
}
}
cfs_status_init();
gboolean create = !g_file_test(DBFILENAME, G_FILE_TEST_EXISTS);
if (!(memdb = memdb_open (DBFILENAME))) {
cfs_critical("memdb_open failed - unable to open database '%s'", DBFILENAME);
goto err;
}
// automatically import cluster.conf from host
if (create && !force_local_mode) {
char *cdata = NULL;
gsize clen = 0;
if (g_file_get_contents(HOST_CLUSTER_CONF_FN, &cdata, &clen, NULL)) {
guint32 mtime = time(NULL);
memdb_create(memdb, "/cluster.conf", 0, mtime);
if (memdb_write(memdb, "/cluster.conf", 0, mtime, cdata, clen, 0, 1) < 0) {
cfs_critical("memdb_write failed - unable to import cluster.conf");
goto err;
}
}
}
// does cluster.conf exist?
gpointer conf_data = NULL;
int len = memdb_read(memdb, "cluster.conf", &conf_data);
if (len >= 0) {
if (force_local_mode) {
cfs_message("forcing local mode (althought cluster.conf exists)");
cfs_set_quorate(1, TRUE);
} else {
if (!(dcdb = dcdb_new(memdb)))
goto err;
dcdb_sync_cluster_conf(memdb, 1);
}
} else {
cfs_debug("using local mode (cluster.conf does not exist)");
cfs_set_quorate(1, TRUE);
}
if (conf_data) g_free(conf_data);
cfs_plug_memdb_t *config = cfs_plug_memdb_new("memdb", memdb, dcdb);
cfs_plug_base_t *bplug = cfs_plug_base_new("", (cfs_plug_t *)config);
create_symlinks(bplug, cfs.nodename);
root_plug = (cfs_plug_t *)bplug;
system("umount -f " CFSDIR " >/dev/null 2>&1");
char *fa[] = { "-f", "-odefault_permissions", "-oallow_other", NULL};
struct fuse_args fuse_args = FUSE_ARGS_INIT(sizeof (fa)/sizeof(gpointer) - 1, fa);
struct fuse_chan *fuse_chan = fuse_mount(CFSDIR, &fuse_args);
if (!fuse_chan) {
cfs_critical("fuse_mount error: %s", strerror(errno));
goto err;
}
if (!(fuse = fuse_new(fuse_chan, &fuse_args, &fuse_ops, sizeof(fuse_ops), NULL))) {
cfs_critical("fuse_new error: %s", strerror(errno));
goto err;
}
fuse_set_signal_handlers(fuse_get_session(fuse));
if (!foreground) {
pid_t cpid = fork();
if (cpid == -1) {
cfs_critical("failed to daemonize program - %s", strerror (errno));
goto err;
} else if (cpid) {
write_pidfile(cpid);
qb_log_fini();
_exit (0);
} else {
int nullfd;
chroot("/");
if ((nullfd = open("/dev/null", O_RDWR, 0)) != -1) {
dup2(nullfd, 0);
dup2(nullfd, 1);
dup2(nullfd, 2);
if (nullfd > 2)
close (nullfd);
}
// do not print to the console after this point
qb_log_ctl(QB_LOG_STDERR, QB_LOG_CONF_ENABLED, QB_FALSE);
setsid();
}
} else {
write_pidfile(getpid());
}
wrote_pidfile = TRUE;
cfs_loop_t *corosync_loop = cfs_loop_new(fuse);
cfs_service_t *service_quorum = NULL;
cfs_service_t *service_confdb = NULL;
cfs_service_t *service_dcdb = NULL;
cfs_service_t *service_status = NULL;
if (dcdb) {
service_quorum = service_quorum_new();
cfs_loop_add_service(corosync_loop, service_quorum, QB_LOOP_HIGH);
service_confdb = service_confdb_new();
cfs_loop_add_service(corosync_loop, service_confdb, QB_LOOP_MED);
service_dcdb = service_dfsm_new(dcdb);
cfs_service_set_timer(service_dcdb, DCDB_VERIFY_TIME);
cfs_loop_add_service(corosync_loop, service_dcdb, QB_LOOP_MED);
status_fsm = cfs_status_dfsm_new();
service_status = service_dfsm_new(status_fsm);
cfs_loop_add_service(corosync_loop, service_status, QB_LOOP_LOW);
}
cfs_loop_start_worker(corosync_loop);
server_start(memdb);
ret = fuse_loop_mt(fuse);
cfs_message("teardown filesystem");
server_stop();
fuse_unmount(CFSDIR, fuse_chan);
fuse_destroy(fuse);
cfs_debug("set stop event loop flag");
cfs_loop_stop_worker(corosync_loop);
cfs_loop_destroy(corosync_loop);
cfs_debug("worker finished");
if (service_dcdb)
service_dfsm_destroy(service_dcdb);
if (service_confdb)
service_confdb_destroy(service_confdb);
if (service_quorum)
service_quorum_destroy(service_quorum);
if (service_status)
service_dfsm_destroy(service_status);
sleep(1); /* do not restart too fast */
ret:
if (status_fsm)
dfsm_destroy(status_fsm);
if (dcdb)
dfsm_destroy(dcdb);
if (memdb)
memdb_close(memdb);
if (wrote_pidfile)
unlink(CFS_PID_FN);
cfs_message("exit proxmox configuration filesystem (%d)", ret);
cfs_status_cleanup();
qb_log_fini();
exit(ret);
err:
goto ret;
}