static void start_target(const char *target) {
DBusMessage *m = NULL, *reply = NULL;
DBusError error;
const char *mode = "replace", *basic_target = "basic.target";
DBusConnection *bus = NULL;
assert(target);
dbus_error_init(&error);
if (bus_connect(DBUS_BUS_SYSTEM, &bus, NULL, &error) < 0) {
log_error("Failed to get D-Bus connection: %s", bus_error_message(&error));
goto finish;
}
log_info("Running request %s/start/%s", target, mode);
if (!(m = dbus_message_new_method_call("org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "StartUnitReplace"))) {
log_error("Could not allocate message.");
goto finish;
}
/* Start these units only if we can replace base.target with it */
if (!dbus_message_append_args(m,
DBUS_TYPE_STRING, &basic_target,
DBUS_TYPE_STRING, &target,
DBUS_TYPE_STRING, &mode,
DBUS_TYPE_INVALID)) {
log_error("Could not attach target and flag information to message.");
goto finish;
}
if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
/* Don't print a warning if we aren't called during
* startup */
if (!dbus_error_has_name(&error, BUS_ERROR_NO_SUCH_JOB))
log_error("Failed to start unit: %s", bus_error_message(&error));
goto finish;
}
finish:
if (m)
dbus_message_unref(m);
if (reply)
dbus_message_unref(reply);
if (bus) {
dbus_connection_flush(bus);
dbus_connection_close(bus);
dbus_connection_unref(bus);
}
dbus_error_free(&error);
}
int main(int argc, char **argv)
{
char mac_addr[ETH_ALEN];
char elan_name[32 + 1];
char preferred_les[ATM_ESA_LEN]; /* LANE2 */
char foreId[255]; /* Max size for a TLV */
char atm2textbuff[100];
char esibuff[20];
int esi_set = 0;
int listen_addr_set = 0;
int atm_set=0;
int proxy_flag = 0;
int lane_version = 0; /* LANE2 */
int max_frame_size = MTU_UNSPEC;
int lecs_method = LECS_WELLKNOWN;
int poll_ret = 0, itf = 0, phys_itf = 0, selector = 0;
int daemon_flag = 0;
pid_t pid;
struct sockaddr_atmsvc manual_atm_addr;
struct sockaddr_atmsvc listen_addr;
char pidbuf[PATH_MAX + 1];
int fd;
int retval;
memset(elan_name, '\0', sizeof(elan_name));
memset(foreId, '\0', sizeof(foreId));
memset(preferred_les, 0, ATM_ESA_LEN);
memset(&manual_atm_addr, 0, sizeof(struct sockaddr_atmsvc));
memset(&listen_addr, 0, sizeof(struct sockaddr_atmsvc));
listen_addr.sas_family = AF_ATMSVC;
set_application("zeppelin"); /* for debug msgs */
while(poll_ret != -1) {
poll_ret = getopt(argc, argv, "bc:e:n:s:m:l:i:I:q:12pf:t:F:");
switch(poll_ret) {
case 'b':
daemon_flag = 1;
break;
case 'c':
if (atm_set) {
usage(argv[0]);
exit(-1);
}
if (text2atm(optarg, (struct sockaddr *)&manual_atm_addr,
sizeof(struct sockaddr_atmsvc), T2A_NAME) < 0) {
diag(COMPONENT, DIAG_ERROR, "Invalid LECS address");
usage(argv[0]);
exit(-1);
}
atm2text(atm2textbuff, sizeof(atm2textbuff),
(struct sockaddr *)&manual_atm_addr, 0);
diag(COMPONENT, DIAG_INFO, "LECS address: %s", atm2textbuff);
lecs_method = LECS_MANUAL;
atm_set=1;
break;
case 'e':
if(esi_convert(optarg, mac_addr)<0) {
diag(COMPONENT, DIAG_ERROR, "Invalid ESI format");
usage(argv[0]);
exit(-1);
}
mac2text(esibuff, mac_addr);
diag(COMPONENT, DIAG_DEBUG, "LEC ESI:%s", esibuff);
esi_set=1;
break;
case 'n':
if (strlen(optarg) > 32) {
diag(COMPONENT, DIAG_ERROR, "ELAN name too long");
exit(-1);
}
strcpy(elan_name, optarg);
diag(COMPONENT, DIAG_INFO, "Vlan name :'%s'", elan_name);
break;
case 's':
if (atm_set) {
usage(argv[0]);
exit(-1);
}
if (text2atm(optarg, (struct sockaddr *)&manual_atm_addr,
sizeof(struct sockaddr_atmsvc), T2A_NAME) < 0) {
diag(COMPONENT, DIAG_ERROR, "Invalid LES address");
usage(argv[0]);
exit(-1);
}
atm2text(atm2textbuff, sizeof(atm2textbuff),
(struct sockaddr *)&manual_atm_addr, 0);
diag(COMPONENT, DIAG_INFO, "LES address: %s", atm2textbuff);
lecs_method = LECS_NONE;
atm_set=1;
break;
case 'm':
set_verbosity(NULL, DIAG_DEBUG);
break;
case 'l':
if (isdigit(optarg[0]) && strlen(optarg) < 4 &&
sscanf(optarg, "%d", &selector) &&
selector >=0 && selector <= 0xff) {
listen_addr.sas_addr.prv[ATM_ESA_LEN - 1] =
(char) selector;
diag(COMPONENT, DIAG_INFO, "Selector byte set "
"to %d", selector);
} else {
if (text2atm(optarg, (struct sockaddr *)&listen_addr,
sizeof(struct sockaddr_atmsvc), T2A_NAME) < 0) {
diag(COMPONENT, DIAG_ERROR, "Invalid ATM listen address");
usage(argv[0]);
exit(-1);
}
listen_addr_set = 1;
}
break;
case 'i':
if (sscanf(optarg, "%d", &itf) <= 0 || itf >= MAX_LEC_ITF) {
diag(COMPONENT, DIAG_ERROR, "Invalid interface number");
usage(argv[0]);
exit(-1);
}
diag(COMPONENT, DIAG_INFO, "Interface number set to %d", itf);
break;
case 'I':
if (sscanf(optarg, "%d", &phys_itf) <= 0 || phys_itf < 0) {
diag(COMPONENT, DIAG_ERROR, "Invalid physical interface number");
usage(argv[0]);
exit(-1);
}
diag(COMPONENT, DIAG_INFO, "Physical interface number set to %d", phys_itf);
break;
case 'q':
#if 0
if (text2qos(optarg,NULL,0) < 0) {
diag(COMPONENT, DIAG_ERROR, "Invalid QOS specification");
usage(argv[0]);
exit(-1);
}
qos_spec = optarg;
#endif
diag(COMPONENT, DIAG_INFO, "-q is deprecated, ignoring it");
break;
case '1':
lane_version = 1;
break;
case '2':
lane_version = 2;
break;
case 'p':
proxy_flag = 1;
break;
case 'f':
if (strlen(optarg) > 255) {
diag(COMPONENT, DIAG_ERROR, "foreId too long");
exit(-1);
}
memcpy (foreId, optarg, strlen(optarg));
foreId[strlen(optarg)] = '\0';
diag(COMPONENT, DIAG_INFO, "foreId :'%s'", foreId);
break;
case 't': /* ERIC */
if( !strncmp( optarg, "1516", 4 )) max_frame_size = MTU_1516;
else if( !strncmp( optarg, "1580", 4 )) max_frame_size = MTU_1580;
else if( !strncmp( optarg, "4544", 4 )) max_frame_size = MTU_4544;
else if( !strncmp( optarg, "9234", 4 )) max_frame_size = MTU_9234;
else if( !strncmp( optarg, "18190", 5 )) max_frame_size = MTU_18190;
break;
case 'F':
set_logfile(optarg);
diag(COMPONENT, DIAG_DEBUG, "logfile set to %s", optarg);
break;
case -1:
break;
default:
usage(argv[0]);
exit(-1);
}
}
if (argc != optind) {
usage(argv[0]);
exit(1);
}
if (lane_version == 1 && max_frame_size == MTU_1580) {
diag(COMPONENT, DIAG_ERROR, "MTU 1580 not defined with LANEv1");
exit(-1);
}
/* Reserve signals */
signal(SIGHUP, sig_reset);
signal(SIGPIPE, SIG_IGN);
if (!esi_set) {
if(addr_getesi(mac_addr, phys_itf) < 0) {
diag(COMPONENT, DIAG_ERROR, "Can't get ESI from kernel!");
return -1;
}
mac2text(esibuff, mac_addr);
diag(COMPONENT, DIAG_DEBUG, "LEC ESI:%s", esibuff);
if (itf != 0)
mac_addr[0] = 0x2 | ((itf - 1) << 2);
}
if ((itf = kernel_init(mac_addr, itf)) < 0 ) {
diag(COMPONENT, DIAG_FATAL, "Kernel interface creation failed, exiting...");
return -1;
}
if (daemon_flag == 1) {
daemon_flag = 0;
pid = fork();
if (pid < 0) {
diag(COMPONENT, DIAG_FATAL, "fork failed, exiting...");
return -1;
}
if (pid) {
/* parent */
return 0;
} else {
/* child */
if (setsid() < 0) {
diag(COMPONENT, DIAG_FATAL, "setsid failed, exiting...");
return -1;
}
}
}
sprintf(pidbuf, "/var/run/lec%d.pid", itf);
fd = open(pidbuf, O_CREAT | O_WRONLY, 0600);
if (fd < 0) {
diag(COMPONENT, DIAG_FATAL, "open(%s, ..) failed, %s", pidbuf, strerror(errno));
return -1;
}
sprintf(pidbuf, "%d\n", getpid());
write(fd, pidbuf, strlen(pidbuf));
close(fd);
/* Loop here until the Sun gets cold */
while (1) {
if (!listen_addr_set) {
char sel = listen_addr.sas_addr.prv[ATM_ESA_LEN - 1];
if (get_listenaddr(listen_addr.sas_addr.prv, phys_itf) < 0) {
diag(COMPONENT, DIAG_FATAL, "Could not figure out my ATM address");
exit(-1);
}
listen_addr.sas_addr.prv[ATM_ESA_LEN - 1] = sel;
}
atm2text(atm2textbuff, sizeof(atm2textbuff),
(struct sockaddr *)&listen_addr, A2T_NAME | A2T_PRETTY | A2T_LOCAL);
diag(COMPONENT, DIAG_INFO, "Our ATM address: %s", atm2textbuff);
diag(COMPONENT, DIAG_DEBUG, "initializing lec parameters");
init_lec_params(mac_addr, elan_name, listen_addr.sas_addr.prv,
itf, foreId, max_frame_size, proxy_flag, lane_version);
if (lecs_method != LECS_MANUAL && lecs_method != LECS_NONE) {
diag(COMPONENT, DIAG_DEBUG, "trying to get LECS address from ILMI");
/* Not sure why this memset is necessary */
memset(&manual_atm_addr, 0, sizeof(struct sockaddr_atmsvc));
retval = get_lecsaddr(phys_itf, &manual_atm_addr);
if (retval <= 0) {
diag(COMPONENT, DIAG_DEBUG,
"get_lecsaddr failed; not enough "
"memory allocated for all addresses "
"or no LECS address registered");
} else {
diag(COMPONENT, DIAG_DEBUG, "obtained LECS address from ILMI");
lecs_method = LECS_FROM_ILMI;
}
}
diag(COMPONENT, DIAG_DEBUG, "About to connect LECS");
if (lec_configure(lecs_method, &manual_atm_addr, &listen_addr) < 0) {
close_connections();
random_delay();
continue;
}
diag(COMPONENT, DIAG_DEBUG, "About to connect LES");
if (les_connect(lecs_method, &manual_atm_addr, &listen_addr) < 0) {
close_connections();
random_delay();
continue;
}
diag(COMPONENT, DIAG_DEBUG, "About to connect BUS");
if (bus_connect() < 0) {
close_connections();
random_delay();
continue;
}
diag(COMPONENT, DIAG_DEBUG, "About to create data direct listen socket");
if (create_data_listen() < 0) {
close_connections();
random_delay();
continue;
}
diag(COMPONENT, DIAG_DEBUG, "About to tell kernel our LEC_ID %d", lec_params.c14_lec_id);
if (set_lec_id(lec_params.c14_lec_id) < 0) {
close_connections();
continue;
}
diag(COMPONENT, DIAG_DEBUG, "About to tell kernel LEC parameters");
if (config_kernel() < 0) {
close_connections();
continue;
}
diag(COMPONENT, DIAG_DEBUG, "Joined ELAN '%s' successfully", lec_params.c5_elan_name);
main_loop();
diag(COMPONENT, DIAG_INFO, "Resetting...");
close_connections();
random_delay();
reset = 0;
}
return 0; /* not reached */
}
static int server_init(Server *s, unsigned n_sockets) {
int r;
unsigned i;
DBusError error;
assert(s);
assert(n_sockets > 0);
dbus_error_init(&error);
zero(*s);
s->epoll_fd = epoll_create1(EPOLL_CLOEXEC);
if (s->epoll_fd < 0) {
r = -errno;
log_error("Failed to create epoll object: %s", strerror(errno));
goto fail;
}
for (i = 0; i < n_sockets; i++) {
struct epoll_event ev;
Fifo *f;
int fd;
fd = SD_LISTEN_FDS_START+i;
r = sd_is_fifo(fd, NULL);
if (r < 0) {
log_error("Failed to determine file descriptor type: %s",
strerror(-r));
goto fail;
}
if (!r) {
log_error("Wrong file descriptor type.");
r = -EINVAL;
goto fail;
}
f = new0(Fifo, 1);
if (!f) {
r = -ENOMEM;
log_error("Failed to create fifo object: %s",
strerror(errno));
goto fail;
}
f->fd = -1;
zero(ev);
ev.events = EPOLLIN;
ev.data.ptr = f;
if (epoll_ctl(s->epoll_fd, EPOLL_CTL_ADD, fd, &ev) < 0) {
r = -errno;
fifo_free(f);
log_error("Failed to add fifo fd to epoll object: %s",
strerror(errno));
goto fail;
}
f->fd = fd;
LIST_PREPEND(Fifo, fifo, s->fifos, f);
f->server = s;
s->n_fifos ++;
}
if (bus_connect(DBUS_BUS_SYSTEM, &s->bus, NULL, &error) < 0) {
log_error("Failed to get D-Bus connection: %s",
bus_error_message(&error));
r = -EIO;
goto fail;
}
return 0;
fail:
server_done(s);
dbus_error_free(&error);
return r;
}
int main(int argc, char *argv[]) {
int r;
DBusError error;
Context c;
dbus_error_init(&error);
zero(c);
#ifdef HAVE_AUDIT
c.audit_fd = -1;
#endif
if (getppid() != 1) {
log_error("This program should be invoked by init only.");
return EXIT_FAILURE;
}
if (argc != 2) {
log_error("This program requires one argument.");
return EXIT_FAILURE;
}
log_set_target(LOG_TARGET_SYSLOG_OR_KMSG);
log_parse_environment();
log_open();
#ifdef HAVE_AUDIT
if ((c.audit_fd = audit_open()) < 0)
log_error("Failed to connect to audit log: %m");
#endif
if (bus_connect(DBUS_BUS_SYSTEM, &c.bus, NULL, &error) < 0) {
log_error("Failed to get D-Bus connection: %s", bus_error_message(&error));
r = -EIO;
goto finish;
}
log_debug("systemd-update-utmp running as pid %lu", (unsigned long) getpid());
if (streq(argv[1], "reboot"))
r = on_reboot(&c);
else if (streq(argv[1], "shutdown"))
r = on_shutdown(&c);
else if (streq(argv[1], "runlevel"))
r = on_runlevel(&c);
else {
log_error("Unknown command %s", argv[1]);
r = -EINVAL;
}
log_debug("systemd-update-utmp stopped as pid %lu", (unsigned long) getpid());
finish:
#ifdef HAVE_AUDIT
if (c.audit_fd >= 0)
audit_close(c.audit_fd);
#endif
if (c.bus) {
dbus_connection_flush(c.bus);
dbus_connection_close(c.bus);
dbus_connection_unref(c.bus);
}
dbus_error_free(&error);
dbus_shutdown();
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}