/*
* Create the slm to picl plugin door
*/
static int
setup_door(void)
{
struct stat stbuf;
/*
* Create the door
*/
door_id = door_create(event_handler, PICLEVENT_DOOR_COOKIE,
DOOR_REFUSE_DESC | DOOR_NO_CANCEL);
if (door_id < 0)
return (-1);
if (stat(PICLEVENT_DOOR, &stbuf) < 0) {
int newfd;
if ((newfd = creat(PICLEVENT_DOOR, 0444)) < 0) {
(void) door_revoke(door_id);
door_id = -1;
return (-1);
}
(void) close(newfd);
}
if (fattach(door_id, PICLEVENT_DOOR) < 0) {
if ((errno != EBUSY) || (fdetach(PICLEVENT_DOOR) < 0) ||
(fattach(door_id, PICLEVENT_DOOR) < 0)) {
(void) door_revoke(door_id);
door_id = -1;
return (-1);
}
}
return (0);
}
int
_nscd_setup_child_server(int did)
{
int errnum;
int fd;
nscd_rc_t rc;
char *me = "_nscd_setup_child_server";
/* Re-establish our own server thread pool */
(void) door_server_create(server_create);
if (thr_keycreate(&server_key, server_destroy) != 0) {
errnum = errno;
_NSCD_LOG(NSCD_LOG_FRONT_END, NSCD_LOG_LEVEL_DEBUG)
(me, "thr_keycreate failed: %s", strerror(errnum));
return (-1);
}
/*
* Create a new door.
* Keep DOOR_REFUSE_DESC (self-cred nscds don't fork)
*/
(void) close(did);
if ((fd = door_create(switcher, NAME_SERVICE_DOOR_COOKIE,
DOOR_REFUSE_DESC|DOOR_UNREF|DOOR_NO_CANCEL)) < 0) {
errnum = errno;
_NSCD_LOG(NSCD_LOG_FRONT_END, NSCD_LOG_LEVEL_DEBUG)
(me, "door_create failed: %s", strerror(errnum));
return (-1);
}
/*
* kick off routing socket monitor thread
*/
if (thr_create(NULL, NULL,
(void *(*)(void *))rts_mon, 0, 0, NULL) != 0) {
errnum = errno;
_NSCD_LOG(NSCD_LOG_FRONT_END, NSCD_LOG_LEVEL_ERROR)
(me, "thr_create (routing socket monitor): %s\n",
strerror(errnum));
(void) door_revoke(fd);
return (-1);
}
/*
* start monitoring the states of the name service clients
*/
rc = _nscd_init_smf_monitor();
if (rc != NSCD_SUCCESS) {
_NSCD_LOG(NSCD_LOG_FRONT_END, NSCD_LOG_LEVEL_ERROR)
(me, "unable to start the SMF monitor (rc = %d)\n", rc);
(void) door_revoke(fd);
return (-1);
}
return (fd);
}
int
revoke_event_service(int fd)
{
struct door_info info;
door_cookie_t *cookie;
if (door_info(fd, &info) == -1) {
return (-1);
}
if (door_revoke(fd) != 0) {
return (-1);
}
/* wait for existing door calls to finish */
(void) sleep(1);
if ((cookie = (door_cookie_t *)(uintptr_t)info.di_data) != NULL) {
struct door_result *tmp = cookie->results;
while (tmp) {
cookie->results = tmp->next;
free(tmp->data);
free(tmp);
tmp = cookie->results;
}
free(cookie);
}
return (0);
}
int
ndmp_door_init(void)
{
int fd;
(void) mutex_lock(&ndmp_doorsrv_mutex);
if (ndmp_door_fildes != -1) {
syslog(LOG_ERR,
"ndmp_door_init: ndmpd service is already running.");
(void) mutex_unlock(&ndmp_doorsrv_mutex);
return (0);
}
if ((ndmp_door_fildes = door_create(ndmp_door_server,
NULL, DOOR_UNREF)) < 0) {
syslog(LOG_ERR, "ndmp_door_init: Could not create door.");
(void) mutex_unlock(&ndmp_doorsrv_mutex);
return (-1);
}
(void) unlink(NDMP_DOOR_SVC);
if ((fd = creat(NDMP_DOOR_SVC, 0444)) < 0) {
syslog(LOG_ERR, "ndmp_door_init: Can't create %s: %m.",
NDMP_DOOR_SVC);
(void) door_revoke(ndmp_door_fildes);
ndmp_door_fildes = -1;
(void) mutex_unlock(&ndmp_doorsrv_mutex);
return (-1);
}
(void) close(fd);
(void) fdetach(NDMP_DOOR_SVC);
if (fattach(ndmp_door_fildes, NDMP_DOOR_SVC) < 0) {
syslog(LOG_ERR, "ndmp_door_init: fattach failed %m");
(void) door_revoke(ndmp_door_fildes);
ndmp_door_fildes = -1;
(void) mutex_unlock(&ndmp_doorsrv_mutex);
return (-1);
}
syslog(LOG_DEBUG, "ndmp_door_init: Door server successfully started");
(void) mutex_unlock(&ndmp_doorsrv_mutex);
return (0);
}
/*
* This function is the fini entry point of the plugin
*/
static void
eventplugin_fini(void)
{
if (door_id >= 0) {
(void) door_revoke(door_id);
door_id = -1;
}
}
/*
* sysevent_evc_unbind - Unbind from previously bound/created channel
*/
int
sysevent_evc_unbind(evchan_t *scp)
{
sev_unsubscribe_args_t uargs;
evchan_subscr_t *subp;
int errcp;
if (scp == NULL || misaligned(scp))
return (errno = EINVAL);
if (will_deadlock(scp))
return (errno = EDEADLK);
(void) mutex_lock(EV_LOCK(scp));
/*
* Unsubscribe, if we are in the process which did the bind.
*/
if (EV_PID(scp) == getpid()) {
uargs.sid.name = NULL;
uargs.sid.len = 0;
/*
* The unsubscribe ioctl will block until all door upcalls have
* drained.
*/
if (ioctl(EV_FD(scp), SEV_UNSUBSCRIBE, (intptr_t)&uargs) != 0) {
errcp = errno;
(void) mutex_unlock(EV_LOCK(scp));
return (errno = errcp);
}
}
while ((subp = EV_SUB_NEXT(scp)) != NULL) {
EV_SUB_NEXT(scp) = subp->evsub_next;
/* If door_xcreate was applied we can clean up */
if (subp->evsub_attr)
kill_door_servers(subp);
if (door_revoke(subp->evsub_door_desc) != 0 && errno == EPERM)
(void) close(subp->evsub_door_desc);
free(subp->evsub_sid);
free(subp);
}
(void) mutex_unlock(EV_LOCK(scp));
/*
* The close of the driver will do the unsubscribe if a) it is the last
* close and b) we are in a child which inherited subscriptions.
*/
(void) close(EV_FD(scp));
(void) mutex_destroy(EV_LOCK(scp));
free(scp);
return (0);
}
/*
* Create the driver to wpad door
*/
int
wpa_supplicant_door_setup(void *cookie, char *doorname)
{
struct stat stbuf;
int error = 0;
wpa_printf(MSG_DEBUG, "wpa_supplicant_door_setup(%s)", doorname);
/*
* Create the door
*/
door_id = door_create(event_handler, cookie,
DOOR_UNREF | DOOR_REFUSE_DESC | DOOR_NO_CANCEL);
if (door_id < 0) {
error = -1;
goto out;
}
if (stat(doorname, &stbuf) < 0) {
int newfd;
if ((newfd = creat(doorname, 0666)) < 0) {
(void) door_revoke(door_id);
door_id = -1;
error = -1;
goto out;
}
(void) close(newfd);
}
if (fattach(door_id, doorname) < 0) {
if ((errno != EBUSY) || (fdetach(doorname) < 0) ||
(fattach(door_id, doorname) < 0)) {
(void) door_revoke(door_id);
door_id = -1;
error = -1;
goto out;
}
}
out:
return (error);
}
/*
* door_server_fini()
*
* Terminate and cleanup the door server.
*/
void
door_server_fini(void)
{
if (door_fd != -1) {
(void) door_revoke(door_fd);
(void) fdetach(HOTPLUGD_DOOR);
}
(void) unlink(HOTPLUGD_DOOR);
}
static void
ipmgmt_door_fini()
{
if (ipmgmt_door_fd == -1)
return;
(void) fdetach(IPMGMT_DOOR);
if (door_revoke(ipmgmt_door_fd) == -1) {
ipmgmt_log(LOG_ERR, "failed to revoke access to door %s: %s",
IPMGMT_DOOR, strerror(errno));
}
}
void
ndmp_door_fini(void)
{
(void) mutex_lock(&ndmp_doorsrv_mutex);
if (ndmp_door_fildes != -1) {
(void) fdetach(NDMP_DOOR_SVC);
(void) door_revoke(ndmp_door_fildes);
ndmp_door_fildes = -1;
}
(void) mutex_unlock(&ndmp_doorsrv_mutex);
}
int
setup_main_door(const char *doorpath)
{
mode_t oldmask;
int fd;
int door_flags = DOOR_UNREF | DOOR_REFUSE_DESC;
#ifdef DOOR_NO_CANCEL
door_flags |= DOOR_NO_CANCEL;
#endif
if ((main_door_fd = door_create(main_switcher, REPOSITORY_DOOR_COOKIE,
door_flags)) < 0) {
perror("door_create");
return (0);
}
#ifdef DOOR_PARAM_DATA_MIN
if (door_setparam(main_door_fd, DOOR_PARAM_DATA_MIN,
offsetofend(repository_door_request_t, rdr_request)) == -1 ||
door_setparam(main_door_fd, DOOR_PARAM_DATA_MAX,
sizeof (repository_door_request_t)) == -1) {
perror("door_setparam");
return (0);
}
#endif /* DOOR_PARAM_DATA_MIN */
/*
* Create the file if it doesn't exist. Ignore errors, since
* fattach(3C) will catch any real problems.
*/
oldmask = umask(000); /* disable umask temporarily */
fd = open(doorpath, O_RDWR | O_CREAT | O_EXCL, 0644);
(void) umask(oldmask);
if (fd >= 0)
(void) close(fd);
if (fattach(main_door_fd, doorpath) < 0) {
if ((errno != EBUSY) ||
(fdetach(doorpath) < 0) ||
(fattach(main_door_fd, doorpath) < 0)) {
perror("fattach");
(void) door_revoke(main_door_fd);
main_door_fd = -1;
return (0);
}
}
return (1);
}
/*
* Stop the smbd opipe door service.
*/
void
smbd_opipe_stop(void)
{
(void) pthread_mutex_lock(&smbd_opipe_mutex);
smbd_door_fini(&smbd_opipe_sdh);
if (smbd_opipe_fd != -1) {
(void) door_revoke(smbd_opipe_fd);
smbd_opipe_fd = -1;
}
(void) pthread_mutex_unlock(&smbd_opipe_mutex);
}
static void
dlmgmt_door_fini()
{
if (dlmgmt_door_fd == -1)
return;
if (door_revoke(dlmgmt_door_fd) == -1) {
dlmgmt_log(LOG_WARNING, "door_revoke(%s) failed: %s",
DLMGMT_DOOR, strerror(errno));
}
(void) fdetach(DLMGMT_DOOR);
(void) dlmgmt_set_doorfd(B_FALSE);
}
/*
* vs_stats_fini
*
* Invoked on daemon unload
*/
void
vs_stats_fini(void)
{
(void) pthread_mutex_lock(&vs_stats_mutex);
/* door termination */
if (vs_stats_door_fd != -1)
(void) door_revoke(vs_stats_door_fd);
vs_stats_door_fd = -1;
(void) fdetach(VS_STATS_DOOR_NAME);
(void) unlink(VS_STATS_DOOR_NAME);
(void) pthread_mutex_unlock(&vs_stats_mutex);
}
/*
* vscan_door_fini
*
* Stop the vscand door service.
*/
void
vs_door_fini(void)
{
(void) pthread_mutex_lock(&vs_door_mutex);
if (vs_door_fd >= 0) {
if (door_revoke(vs_door_fd) < 0)
syslog(LOG_ERR, "vscand: door revoke %s",
strerror(errno));
}
vs_door_fd = -1;
(void) pthread_mutex_unlock(&vs_door_mutex);
}
int main(void)
{
int res = 1;
int did = -1;
struct sigaction sa;
sa.sa_sigaction = signal_handler;
sa.sa_flags = SA_RESTART;
if (sigfillset(&sa.sa_mask)) {
perror("sigfillset");
return 1;
}
if (sigaction(SIGINT, &sa, NULL)) {
perror("sigaction");
return 1;
}
door_server_create(create_door_thread);
if ((did = door_create(server_procedure, NULL, 0)) < 0) {
perror("door_create");
return 1;
}
/* Let the server thread to run. */
sleep(2);
/* Send a signal to the server thread that should be already created and
blocked in door_return. */
if (_lwp_kill(server_lwpid, SIGINT)) {
perror("_lwp_kill");
goto out;
}
/* Let the other thread to run. */
sleep(2);
res = 0;
out:
if (did >= 0 && door_revoke(did))
perror("door_revoke");
return res;
}
static int
dlmgmt_door_init()
{
int fd;
int err;
/*
* Create the door file for dlmgmtd.
*/
if ((fd = open(DLMGMT_DOOR, O_CREAT|O_RDONLY, 0644)) == -1) {
err = errno;
dlmgmt_log(LOG_ERR, "open(%s) failed: %s",
DLMGMT_DOOR, strerror(err));
return (err);
}
(void) close(fd);
if ((dlmgmt_door_fd = door_create(dlmgmt_handler, NULL,
DOOR_REFUSE_DESC | DOOR_NO_CANCEL)) == -1) {
err = errno;
dlmgmt_log(LOG_ERR, "door_create() failed: %s",
strerror(err));
return (err);
}
if (fattach(dlmgmt_door_fd, DLMGMT_DOOR) != 0) {
err = errno;
dlmgmt_log(LOG_ERR, "fattach(%s) failed: %s",
DLMGMT_DOOR, strerror(err));
goto fail;
}
if ((err = dlmgmt_set_doorfd(B_TRUE)) != 0) {
dlmgmt_log(LOG_ERR, "cannot set kernel doorfd: %s",
strerror(err));
(void) fdetach(DLMGMT_DOOR);
goto fail;
}
return (0);
fail:
(void) door_revoke(dlmgmt_door_fd);
dlmgmt_door_fd = -1;
return (err);
}
/*
* Destroy the unlock descriptor `ud' -- `ud' must be unlocked on entry.
* If there's room and `cacheable' is set, then, keep the unlock descriptor
* on the reclaim list to lower future creation cost.
*/
static void
ud_destroy(dsvcd_unlock_desc_t *ud, boolean_t cacheable)
{
assert(!MUTEX_HELD(&ud->ud_lock));
ud->ud_cn = NULL;
(void) mutex_lock(&ud_reclaim_lock);
if (cacheable && ud_reclaim_count < UD_RECLAIM_MAX) {
ud->ud_next = ud_reclaim_list;
ud_reclaim_list = ud;
ud_reclaim_count++;
(void) mutex_unlock(&ud_reclaim_lock);
} else {
(void) mutex_unlock(&ud_reclaim_lock);
(void) door_revoke(ud->ud_fd);
(void) mutex_destroy(&ud->ud_lock);
free(ud);
}
}
void
wpa_supplicant_door_destroy(char *doorname)
{
wpa_printf(MSG_DEBUG, "wpa_supplicant_door_destroy(%s)\n", doorname);
if (door_id == -1)
return;
if (door_revoke(door_id) == -1) {
wpa_printf(MSG_ERROR, "failed to door_revoke(%d) %s, exiting.",
door_id, strerror(errno));
}
if (fdetach(doorname) == -1) {
wpa_printf(MSG_ERROR, "failed to fdetach %s: %s, exiting.",
doorname, strerror(errno));
}
(void) close(door_id);
}
static gboolean
afstreams_sd_deinit(LogPipe *s)
{
AFStreamsSourceDriver *self = (AFStreamsSourceDriver *) s;
if (self->reader)
{
log_pipe_deinit((LogPipe *) self->reader);
log_pipe_unref((LogPipe *) self->reader);
self->reader = NULL;
}
if (self->door_fd != -1)
{
door_revoke(self->door_fd);
close(self->door_fd);
}
if (!log_src_driver_deinit_method(s))
return FALSE;
return TRUE;
}
/*
* door_server_init()
*
* Create the door file, and initialize the door server.
*/
boolean_t
door_server_init(void)
{
int fd;
/* Create the door file */
if ((fd = open(HOTPLUGD_DOOR, O_CREAT|O_EXCL|O_RDONLY, 0644)) == -1) {
if (errno == EEXIST) {
log_err("Door service is already running.\n");
} else {
log_err("Cannot open door file '%s': %s\n",
HOTPLUGD_DOOR, strerror(errno));
}
return (B_FALSE);
}
(void) close(fd);
/* Initialize the door service */
if ((door_fd = door_create(door_server, NULL,
DOOR_REFUSE_DESC | DOOR_NO_CANCEL)) == -1) {
log_err("Cannot create door service: %s\n", strerror(errno));
return (B_FALSE);
}
/* Cleanup stale door associations */
(void) fdetach(HOTPLUGD_DOOR);
/* Associate door service with door file */
if (fattach(door_fd, HOTPLUGD_DOOR) != 0) {
log_err("Cannot attach to door file '%s': %s\n", HOTPLUGD_DOOR,
strerror(errno));
(void) door_revoke(door_fd);
(void) fdetach(HOTPLUGD_DOOR);
door_fd = -1;
return (B_FALSE);
}
return (B_TRUE);
}
static int
ipmgmt_door_init()
{
int fd;
int err;
/* create the door file for ipmgmtd */
if ((fd = open(IPMGMT_DOOR, O_CREAT|O_RDONLY, IPADM_FILE_MODE)) == -1) {
err = errno;
ipmgmt_log(LOG_ERR, "could not open %s: %s",
IPMGMT_DOOR, strerror(err));
return (err);
}
(void) close(fd);
if ((ipmgmt_door_fd = door_create(ipmgmt_handler, NULL,
DOOR_REFUSE_DESC | DOOR_NO_CANCEL)) == -1) {
err = errno;
ipmgmt_log(LOG_ERR, "failed to create door: %s", strerror(err));
return (err);
}
/*
* fdetach first in case a previous daemon instance exited
* ungracefully.
*/
(void) fdetach(IPMGMT_DOOR);
if (fattach(ipmgmt_door_fd, IPMGMT_DOOR) != 0) {
err = errno;
ipmgmt_log(LOG_ERR, "failed to attach door to %s: %s",
IPMGMT_DOOR, strerror(err));
goto fail;
}
return (0);
fail:
(void) door_revoke(ipmgmt_door_fd);
ipmgmt_door_fd = -1;
return (err);
}
/*
* vs_stats_init
*
* Invoked on daemon load and unload
*/
int
vs_stats_init(void)
{
(void) pthread_mutex_lock(&vs_stats_mutex);
(void) memset(&vscan_stats, 0, sizeof (vs_stats_t));
/* door initialization */
if ((vs_stats_door_fd = door_create(vs_stats_door_call,
&vs_stats_door_cookie, (DOOR_UNREF | DOOR_REFUSE_DESC))) < 0) {
vs_stats_door_fd = -1;
} else {
(void) fdetach(VS_STATS_DOOR_NAME);
if (fattach(vs_stats_door_fd, VS_STATS_DOOR_NAME) < 0) {
(void) door_revoke(vs_stats_door_fd);
vs_stats_door_fd = -1;
}
}
(void) pthread_mutex_unlock(&vs_stats_mutex);
return ((vs_stats_door_fd == -1) ? -1 : 0);
}
int
_nscd_setup_server(char *execname, char **argv)
{
int fd;
int errnum;
int bind_failed = 0;
mode_t old_mask;
struct stat buf;
sigset_t myset;
struct sigaction action;
char *me = "_nscd_setup_server";
main_execname = execname;
main_argv = argv;
/* Any nscd process is to ignore SIGPIPE */
if (signal(SIGPIPE, SIG_IGN) == SIG_ERR) {
errnum = errno;
_NSCD_LOG(NSCD_LOG_FRONT_END, NSCD_LOG_LEVEL_ERROR)
(me, "signal (SIGPIPE): %s\n", strerror(errnum));
return (-1);
}
keep_open_dns_socket();
/*
* the max number of server threads should be fixed now, so
* set flag to indicate that no in-flight change is allowed
*/
max_servers_set = 1;
(void) thr_keycreate(&lookup_state_key, NULL);
(void) sema_init(&common_sema, frontend_cfg_g.common_worker_threads,
USYNC_THREAD, 0);
/* Establish server thread pool */
(void) door_server_create(server_create);
if (thr_keycreate(&server_key, server_destroy) != 0) {
errnum = errno;
_NSCD_LOG(NSCD_LOG_FRONT_END, NSCD_LOG_LEVEL_ERROR)
(me, "thr_keycreate (server thread): %s\n",
strerror(errnum));
return (-1);
}
/* Create a door */
if ((fd = door_create(switcher, NAME_SERVICE_DOOR_COOKIE,
DOOR_UNREF | DOOR_NO_CANCEL)) < 0) {
errnum = errno;
_NSCD_LOG(NSCD_LOG_FRONT_END, NSCD_LOG_LEVEL_ERROR)
(me, "door_create: %s\n", strerror(errnum));
return (-1);
}
/* if not main nscd, no more setup to do */
if (_whoami != NSCD_MAIN)
return (fd);
/* bind to file system */
if (is_system_labeled() && (getzoneid() == GLOBAL_ZONEID)) {
if (stat(TSOL_NAME_SERVICE_DOOR, &buf) < 0) {
int newfd;
/* make sure the door will be readable by all */
old_mask = umask(0);
if ((newfd = creat(TSOL_NAME_SERVICE_DOOR, 0444)) < 0) {
errnum = errno;
_NSCD_LOG(NSCD_LOG_FRONT_END,
NSCD_LOG_LEVEL_ERROR)
(me, "Cannot create %s: %s\n",
TSOL_NAME_SERVICE_DOOR,
strerror(errnum));
bind_failed = 1;
}
/* rstore the old file mode creation mask */
(void) umask(old_mask);
(void) close(newfd);
}
if (symlink(TSOL_NAME_SERVICE_DOOR, NAME_SERVICE_DOOR) != 0) {
if (errno != EEXIST) {
errnum = errno;
_NSCD_LOG(NSCD_LOG_FRONT_END,
NSCD_LOG_LEVEL_ERROR)
(me, "Cannot symlink %s: %s\n",
NAME_SERVICE_DOOR, strerror(errnum));
bind_failed = 1;
}
}
} else if (stat(NAME_SERVICE_DOOR, &buf) < 0) {
int newfd;
/* make sure the door will be readable by all */
old_mask = umask(0);
if ((newfd = creat(NAME_SERVICE_DOOR, 0444)) < 0) {
errnum = errno;
_NSCD_LOG(NSCD_LOG_FRONT_END, NSCD_LOG_LEVEL_ERROR)
(me, "Cannot create %s: %s\n", NAME_SERVICE_DOOR,
strerror(errnum));
bind_failed = 1;
}
/* rstore the old file mode creation mask */
(void) umask(old_mask);
(void) close(newfd);
}
if (bind_failed == 1) {
(void) door_revoke(fd);
return (-1);
}
if (fattach(fd, NAME_SERVICE_DOOR) < 0) {
if ((errno != EBUSY) ||
(fdetach(NAME_SERVICE_DOOR) < 0) ||
(fattach(fd, NAME_SERVICE_DOOR) < 0)) {
errnum = errno;
_NSCD_LOG(NSCD_LOG_FRONT_END, NSCD_LOG_LEVEL_ERROR)
(me, "fattach: %s\n", strerror(errnum));
(void) door_revoke(fd);
return (-1);
}
}
/*
* kick off routing socket monitor thread
*/
if (thr_create(NULL, NULL,
(void *(*)(void *))rts_mon, 0, 0, NULL) != 0) {
errnum = errno;
_NSCD_LOG(NSCD_LOG_FRONT_END, NSCD_LOG_LEVEL_ERROR)
(me, "thr_create (routing socket monitor): %s\n",
strerror(errnum));
(void) door_revoke(fd);
return (-1);
}
/*
* set up signal handler for SIGHUP
*/
action.sa_handler = dozip;
action.sa_flags = 0;
(void) sigemptyset(&action.sa_mask);
(void) sigemptyset(&myset);
(void) sigaddset(&myset, SIGHUP);
if (sigaction(SIGHUP, &action, NULL) < 0) {
errnum = errno;
_NSCD_LOG(NSCD_LOG_FRONT_END, NSCD_LOG_LEVEL_ERROR)
(me, "sigaction (SIGHUP): %s\n", strerror(errnum));
(void) door_revoke(fd);
return (-1);
}
return (fd);
}
int
main(int argc, char **argv)
{
static const int door_attrs =
DOOR_REFUSE_DESC | DOOR_NO_CANCEL;
sigset_t oldmask, tmpmask;
char *env, *door_path = NULL;
int door_fd = -1, tmp_fd = -1;
int err, i, sig;
int rc = EXIT_FAIL;
/* Debugging support. */
if ((env = getenv("SMBFS_DEBUG")) != NULL) {
smb_debug = atoi(env);
if (smb_debug < 1)
smb_debug = 1;
}
/*
* Find out if an IOD is already running.
* If so, we lost a harmless startup race.
* An IOD did start, so exit success.
*/
err = smb_iod_open_door(&door_fd);
if (err == 0) {
close(door_fd);
door_fd = -1;
DPRINT("main: already running\n");
exit(EXIT_OK);
}
/*
* Create a file for the door.
*/
door_path = smb_iod_door_path();
unlink(door_path);
tmp_fd = open(door_path, O_RDWR|O_CREAT|O_EXCL, 0600);
if (tmp_fd < 0) {
perror(door_path);
exit(EXIT_FAIL);
}
close(tmp_fd);
tmp_fd = -1;
/*
* Close FDs 0,1,2 so we don't have a TTY, and
* re-open them on /dev/null so they won't be
* used for device handles (etc.) later, and
* we don't have to worry about printf calls
* or whatever going to these FDs.
*/
for (i = 0; i < 3; i++) {
/* Exception: If smb_debug, keep stderr */
if (smb_debug && i == 2)
break;
close(i);
tmp_fd = open("/dev/null", O_RDWR);
if (tmp_fd < 0)
perror("/dev/null");
if (tmp_fd != i)
DPRINT("Open /dev/null - wrong fd?\n");
}
/*
* Become session leader.
*/
setsid();
/*
* Create door service threads with signals blocked.
*/
sigfillset(&tmpmask);
sigprocmask(SIG_BLOCK, &tmpmask, &oldmask);
/* Setup the door service. */
door_fd = door_create(iod_dispatch, NULL, door_attrs);
if (door_fd < 0) {
fprintf(stderr, "%s: door_create failed\n", argv[0]);
rc = EXIT_FAIL;
goto errout;
}
fdetach(door_path);
if (fattach(door_fd, door_path) < 0) {
fprintf(stderr, "%s: fattach failed\n", argv[0]);
rc = EXIT_FAIL;
goto errout;
}
/*
* Post the initial alarm, and then just
* wait for signals.
*/
alarm(ALARM_TIME);
again:
sig = sigwait(&tmpmask);
DPRINT("main: sig=%d\n", sig);
/*
* If a door call races with the alarm, ignore the alarm.
* It will be rescheduled when the threads go away.
*/
mutex_lock(&iod_mutex);
if (sig == SIGALRM && iod_thr_count > 0) {
mutex_unlock(&iod_mutex);
goto again;
}
iod_terminating = 1;
mutex_unlock(&iod_mutex);
rc = EXIT_OK;
errout:
fdetach(door_path);
door_revoke(door_fd);
door_fd = -1;
unlink(door_path);
return (rc);
}