int
ol_is_running ()
{
ol_log_func ();
int ret = 1;
char *dir = g_strdup_printf ("%s/%s/", g_get_user_config_dir (), PACKAGE_NAME);
if (g_mkdir_with_parents (dir, 0755) == -1)
{
ol_error ("Failed to endure config dir");
}
else
{
char *path = g_strdup_printf ("%s/%s/%s", g_get_user_config_dir (), PACKAGE_NAME, LOCK_FILENAME);
int fd = open (path, O_RDWR | O_CREAT, S_IRUSR | S_IWUSR);
if (fd == -1)
{
ol_error ("Failed to open or create singleton lock");
}
else
{
if (_lockfile (fd) < 0)
{
if (errno == EACCES || errno == EAGAIN)
{
close (fd);
}
ol_infof ("Can not lock file %s: %s\n", path, strerror (errno));
}
else
{
if (ftruncate (fd, 0) != 0)
{
ol_errorf ("Failed to truncate singleton lock: %s\n",
strerror (errno));
}
char buf[16];
sprintf (buf, "%ld", (long)getpid ());
if (write (fd, buf, strlen (buf)) != strlen (buf))
ol_errorf ("Failed to write pid in singleton lock\n");
ret = 0;
}
}
g_free (path);
}
g_free (dir);
return ret;
}
static int create_lockfile(void)
{
int rv, fd;
fd = -1;
rv = _lockfile(O_CREAT | O_WRONLY, &fd, NULL);
if (fd == -1) {
log_error("lockfile %s open error %d: %s",
cl.lockfile, rv, strerror(rv));
return -1;
}
if (rv < 0) {
log_error("lockfile %s setlk error %d: %s",
cl.lockfile, rv, strerror(rv));
goto fail;
}
rv = write_daemon_state(fd, BOOTHD_STARTING);
if (rv != 0) {
log_error("write daemon state %d to lockfile error %s: %s",
BOOTHD_STARTING, cl.lockfile, strerror(errno));
goto fail;
}
if (is_root()) {
if (fchown(fd, booth_conf->uid, booth_conf->gid) < 0)
log_error("fchown() on lockfile said %d: %s",
errno, strerror(errno));
}
return fd;
fail:
close(fd);
return -1;
}
static int do_status(int type)
{
pid_t pid;
int rv, status_lock_fd, ret;
const char *reason = NULL;
char lockfile_data[1024], *cp;
ret = PCMK_OCF_NOT_RUNNING;
rv = setup_config(type);
if (rv) {
reason = "Error reading configuration.";
ret = PCMK_OCF_UNKNOWN_ERROR;
goto quit;
}
if (!local) {
reason = "No Service IP active here.";
goto quit;
}
rv = _lockfile(O_RDWR, &status_lock_fd, &pid);
if (status_lock_fd == -1) {
reason = "No PID file.";
goto quit;
}
if (rv == 0) {
close(status_lock_fd);
reason = "PID file not locked.";
goto quit;
}
if (pid) {
fprintf(stdout, "booth_lockpid=%d ", pid);
fflush(stdout);
}
rv = read(status_lock_fd, lockfile_data, sizeof(lockfile_data) - 1);
if (rv < 4) {
close(status_lock_fd);
reason = "Cannot read lockfile data.";
ret = PCMK_LSB_UNKNOWN_ERROR;
goto quit;
}
lockfile_data[rv] = 0;
close(status_lock_fd);
/* Make sure it's only a single line */
cp = strchr(lockfile_data, '\r');
if (cp)
*cp = 0;
cp = strchr(lockfile_data, '\n');
if (cp)
*cp = 0;
rv = setup_tcp_listener(1);
if (rv == 0) {
reason = "TCP port not in use.";
goto quit;
}
fprintf(stdout, "booth_lockfile='%s' %s\n",
cl.lockfile, lockfile_data);
if (!daemonize)
fprintf(stderr, "Booth at %s port %d seems to be running.\n",
local->addr_string, booth_conf->port);
return 0;
quit:
log_debug("not running: %s", reason);
/* Ie. "DEBUG" */
if (!daemonize)
fprintf(stderr, "not running: %s\n", reason);
return ret;
}
static int do_status(int type)
{
pid_t pid;
int rv, lock_fd, ret;
const char *reason = NULL;
char lockfile_data[1024], *cp;
ret = PCMK_OCF_NOT_RUNNING;
/* TODO: query all, and return quit only if it's _cleanly_ not
* running, ie. _neither_ of port/lockfile/process is available?
*
* Currently a single failure says "not running", even if "only" the
* lockfile has been removed. */
rv = setup_config(type);
if (rv) {
reason = "Error reading configuration.";
ret = PCMK_OCF_UNKNOWN_ERROR;
goto quit;
}
if (!local) {
reason = "No Service IP active here.";
goto quit;
}
rv = _lockfile(O_RDWR, &lock_fd, &pid);
if (rv == 0) {
reason = "PID file not locked.";
goto quit;
}
if (lock_fd == -1) {
reason = "No PID file.";
goto quit;
}
if (pid) {
fprintf(stdout, "booth_lockpid=%d ", pid);
fflush(stdout);
}
rv = read(lock_fd, lockfile_data, sizeof(lockfile_data) - 1);
if (rv < 4) {
reason = "Cannot read lockfile data.";
ret = PCMK_LSB_UNKNOWN_ERROR;
goto quit;
}
lockfile_data[rv] = 0;
if (lock_fd != -1)
close(lock_fd);
/* Make sure it's only a single line */
cp = strchr(lockfile_data, '\r');
if (cp)
*cp = 0;
cp = strchr(lockfile_data, '\n');
if (cp)
*cp = 0;
rv = setup_tcp_listener(1);
if (rv == 0) {
reason = "TCP port not in use.";
goto quit;
}
fprintf(stdout, "booth_lockfile='%s' %s\n",
cl.lockfile, lockfile_data);
if (daemonize)
fprintf(stderr, "Booth at %s port %d seems to be running.\n",
local->addr_string, booth_conf->port);
return 0;
quit:
log_debug("not running: %s", reason);
/* Ie. "DEBUG" */
if (daemonize)
fprintf(stderr, "not running: %s\n", reason);
return ret;
}
