2 * WPA Supplicant / privileged helper program
3 * Copyright (c) 2007-2009, Jouni Malinen <j@w1.fi>
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
12 #endif /* __linux__ */
18 #include "common/version.h"
19 #include "drivers/driver.h"
20 #include "l2_packet/l2_packet.h"
21 #include "common/privsep_commands.h"
22 #include "common/ieee802_11_defs.h"
25 struct wpa_priv_interface {
26 struct wpa_priv_interface *next;
32 struct wpa_driver_ops *driver;
34 struct sockaddr_un drv_addr;
37 /* TODO: add support for multiple l2 connections */
38 struct l2_packet_data *l2;
39 struct sockaddr_un l2_addr;
43 static void wpa_priv_cmd_register(struct wpa_priv_interface *iface,
44 struct sockaddr_un *from)
46 if (iface->drv_priv) {
47 wpa_printf(MSG_DEBUG, "Cleaning up forgotten driver instance");
48 if (iface->driver->deinit)
49 iface->driver->deinit(iface->drv_priv);
50 iface->drv_priv = NULL;
51 iface->wpas_registered = 0;
55 wpa_printf(MSG_DEBUG, "Cleaning up forgotten l2_packet "
57 l2_packet_deinit(iface->l2);
61 if (iface->driver->init == NULL)
64 iface->drv_priv = iface->driver->init(iface, iface->ifname);
65 if (iface->drv_priv == NULL) {
66 wpa_printf(MSG_DEBUG, "Failed to initialize driver wrapper");
70 wpa_printf(MSG_DEBUG, "Driver wrapper '%s' initialized for interface "
71 "'%s'", iface->driver_name, iface->ifname);
73 os_memcpy(&iface->drv_addr, from, sizeof(iface->drv_addr));
74 iface->wpas_registered = 1;
76 if (iface->driver->set_param &&
77 iface->driver->set_param(iface->drv_priv, NULL) < 0) {
78 wpa_printf(MSG_ERROR, "Driver interface rejected param");
83 static void wpa_priv_cmd_unregister(struct wpa_priv_interface *iface,
84 struct sockaddr_un *from)
86 if (iface->drv_priv) {
87 if (iface->driver->deinit)
88 iface->driver->deinit(iface->drv_priv);
89 iface->drv_priv = NULL;
90 iface->wpas_registered = 0;
95 static void wpa_priv_cmd_scan(struct wpa_priv_interface *iface,
96 char *buf, size_t len)
98 struct wpa_driver_scan_params params;
100 if (iface->drv_priv == NULL)
103 os_memset(¶ms, 0, sizeof(params));
105 params.ssids[0].ssid = (u8 *) buf;
106 params.ssids[0].ssid_len = len;
107 params.num_ssids = 1;
110 if (iface->driver->scan2)
111 iface->driver->scan2(iface->drv_priv, ¶ms);
115 static void wpa_priv_get_scan_results2(struct wpa_priv_interface *iface,
116 struct sockaddr_un *from)
118 struct wpa_scan_results *res;
119 u8 *buf = NULL, *pos, *end;
123 res = iface->driver->get_scan_results2(iface->drv_priv);
127 buf = os_malloc(60000);
133 os_memcpy(pos, &val, sizeof(int));
136 for (i = 0; i < res->num; i++) {
137 struct wpa_scan_res *r = res->res[i];
138 val = sizeof(*r) + r->ie_len;
139 if (end - pos < (int) sizeof(int) + val)
141 os_memcpy(pos, &val, sizeof(int));
143 os_memcpy(pos, r, val);
147 sendto(iface->fd, buf, pos - buf, 0, (struct sockaddr *) from,
151 wpa_scan_results_free(res);
156 wpa_scan_results_free(res);
157 sendto(iface->fd, "", 0, 0, (struct sockaddr *) from, sizeof(*from));
161 static void wpa_priv_cmd_get_scan_results(struct wpa_priv_interface *iface,
162 struct sockaddr_un *from)
164 if (iface->drv_priv == NULL)
167 if (iface->driver->get_scan_results2)
168 wpa_priv_get_scan_results2(iface, from);
170 sendto(iface->fd, "", 0, 0, (struct sockaddr *) from,
175 static void wpa_priv_cmd_associate(struct wpa_priv_interface *iface,
176 void *buf, size_t len)
178 struct wpa_driver_associate_params params;
179 struct privsep_cmd_associate *assoc;
183 if (iface->drv_priv == NULL || iface->driver->associate == NULL)
186 if (len < sizeof(*assoc)) {
187 wpa_printf(MSG_DEBUG, "Invalid association request");
192 if (sizeof(*assoc) + assoc->wpa_ie_len > len) {
193 wpa_printf(MSG_DEBUG, "Association request overflow");
197 os_memset(¶ms, 0, sizeof(params));
198 bssid = assoc->bssid;
199 if (bssid[0] | bssid[1] | bssid[2] | bssid[3] | bssid[4] | bssid[5])
200 params.bssid = bssid;
201 params.ssid = assoc->ssid;
202 if (assoc->ssid_len > 32)
204 params.ssid_len = assoc->ssid_len;
205 params.freq = assoc->freq;
206 if (assoc->wpa_ie_len) {
207 params.wpa_ie = (u8 *) (assoc + 1);
208 params.wpa_ie_len = assoc->wpa_ie_len;
210 params.pairwise_suite = assoc->pairwise_suite;
211 params.group_suite = assoc->group_suite;
212 params.key_mgmt_suite = assoc->key_mgmt_suite;
213 params.auth_alg = assoc->auth_alg;
214 params.mode = assoc->mode;
216 res = iface->driver->associate(iface->drv_priv, ¶ms);
217 wpa_printf(MSG_DEBUG, "drv->associate: res=%d", res);
221 static void wpa_priv_cmd_get_bssid(struct wpa_priv_interface *iface,
222 struct sockaddr_un *from)
226 if (iface->drv_priv == NULL)
229 if (iface->driver->get_bssid == NULL ||
230 iface->driver->get_bssid(iface->drv_priv, bssid) < 0)
233 sendto(iface->fd, bssid, ETH_ALEN, 0, (struct sockaddr *) from,
238 sendto(iface->fd, "", 0, 0, (struct sockaddr *) from, sizeof(*from));
242 static void wpa_priv_cmd_get_ssid(struct wpa_priv_interface *iface,
243 struct sockaddr_un *from)
245 u8 ssid[sizeof(int) + 32];
248 if (iface->drv_priv == NULL)
251 if (iface->driver->get_ssid == NULL)
254 res = iface->driver->get_ssid(iface->drv_priv, &ssid[sizeof(int)]);
255 if (res < 0 || res > 32)
257 os_memcpy(ssid, &res, sizeof(int));
259 sendto(iface->fd, ssid, sizeof(ssid), 0, (struct sockaddr *) from,
264 sendto(iface->fd, "", 0, 0, (struct sockaddr *) from, sizeof(*from));
268 static void wpa_priv_cmd_set_key(struct wpa_priv_interface *iface,
269 void *buf, size_t len)
271 struct privsep_cmd_set_key *params;
274 if (iface->drv_priv == NULL || iface->driver->set_key == NULL)
277 if (len != sizeof(*params)) {
278 wpa_printf(MSG_DEBUG, "Invalid set_key request");
284 res = iface->driver->set_key(iface->ifname, iface->drv_priv,
286 params->addr, params->key_idx,
288 params->seq_len ? params->seq : NULL,
290 params->key_len ? params->key : NULL,
292 wpa_printf(MSG_DEBUG, "drv->set_key: res=%d", res);
296 static void wpa_priv_cmd_get_capa(struct wpa_priv_interface *iface,
297 struct sockaddr_un *from)
299 struct wpa_driver_capa capa;
301 if (iface->drv_priv == NULL)
304 if (iface->driver->get_capa == NULL ||
305 iface->driver->get_capa(iface->drv_priv, &capa) < 0)
308 sendto(iface->fd, &capa, sizeof(capa), 0, (struct sockaddr *) from,
313 sendto(iface->fd, "", 0, 0, (struct sockaddr *) from, sizeof(*from));
317 static void wpa_priv_l2_rx(void *ctx, const u8 *src_addr, const u8 *buf,
320 struct wpa_priv_interface *iface = ctx;
324 io[0].iov_base = (u8 *) src_addr;
325 io[0].iov_len = ETH_ALEN;
326 io[1].iov_base = (u8 *) buf;
329 os_memset(&msg, 0, sizeof(msg));
332 msg.msg_name = &iface->l2_addr;
333 msg.msg_namelen = sizeof(iface->l2_addr);
335 if (sendmsg(iface->fd, &msg, 0) < 0) {
336 perror("sendmsg(l2 rx)");
341 static void wpa_priv_cmd_l2_register(struct wpa_priv_interface *iface,
342 struct sockaddr_un *from,
343 void *buf, size_t len)
346 u8 own_addr[ETH_ALEN];
350 if (len != 2 * sizeof(int)) {
351 wpa_printf(MSG_DEBUG, "Invalid l2_register length %lu",
352 (unsigned long) len);
357 if (proto != ETH_P_EAPOL && proto != ETH_P_RSN_PREAUTH) {
358 wpa_printf(MSG_DEBUG, "Refused l2_packet connection for "
359 "ethertype 0x%x", proto);
364 wpa_printf(MSG_DEBUG, "Cleaning up forgotten l2_packet "
366 l2_packet_deinit(iface->l2);
370 os_memcpy(&iface->l2_addr, from, sizeof(iface->l2_addr));
372 iface->l2 = l2_packet_init(iface->ifname, NULL, proto,
373 wpa_priv_l2_rx, iface, reg_cmd[1]);
374 if (iface->l2 == NULL) {
375 wpa_printf(MSG_DEBUG, "Failed to initialize l2_packet "
376 "instance for protocol %d", proto);
380 if (l2_packet_get_own_addr(iface->l2, own_addr) < 0) {
381 wpa_printf(MSG_DEBUG, "Failed to get own address from "
383 l2_packet_deinit(iface->l2);
388 res = sendto(iface->fd, own_addr, ETH_ALEN, 0,
389 (struct sockaddr *) from, sizeof(*from));
390 wpa_printf(MSG_DEBUG, "L2 registration: res=%d", res);
394 static void wpa_priv_cmd_l2_unregister(struct wpa_priv_interface *iface,
395 struct sockaddr_un *from)
398 l2_packet_deinit(iface->l2);
404 static void wpa_priv_cmd_l2_notify_auth_start(struct wpa_priv_interface *iface,
405 struct sockaddr_un *from)
408 l2_packet_notify_auth_start(iface->l2);
412 static void wpa_priv_cmd_l2_send(struct wpa_priv_interface *iface,
413 struct sockaddr_un *from,
414 void *buf, size_t len)
420 if (iface->l2 == NULL)
423 if (len < ETH_ALEN + 2) {
424 wpa_printf(MSG_DEBUG, "Too short L2 send packet (len=%lu)",
425 (unsigned long) len);
430 os_memcpy(&proto, buf + ETH_ALEN, 2);
432 if (proto != ETH_P_EAPOL && proto != ETH_P_RSN_PREAUTH) {
433 wpa_printf(MSG_DEBUG, "Refused l2_packet send for ethertype "
438 res = l2_packet_send(iface->l2, dst_addr, proto, buf + ETH_ALEN + 2,
440 wpa_printf(MSG_DEBUG, "L2 send: res=%d", res);
444 static void wpa_priv_cmd_set_country(struct wpa_priv_interface *iface,
447 if (iface->drv_priv == NULL || iface->driver->set_country == NULL ||
451 iface->driver->set_country(iface->drv_priv, buf);
455 static void wpa_priv_receive(int sock, void *eloop_ctx, void *sock_ctx)
457 struct wpa_priv_interface *iface = eloop_ctx;
458 char buf[2000], *pos;
462 struct sockaddr_un from;
463 socklen_t fromlen = sizeof(from);
465 res = recvfrom(sock, buf, sizeof(buf), 0, (struct sockaddr *) &from,
472 if (res < (int) sizeof(int)) {
473 wpa_printf(MSG_DEBUG, "Too short command (len=%d)", res);
477 os_memcpy(&cmd, buf, sizeof(int));
478 wpa_printf(MSG_DEBUG, "Command %d for interface %s",
480 cmd_buf = &buf[sizeof(int)];
481 cmd_len = res - sizeof(int);
484 case PRIVSEP_CMD_REGISTER:
485 wpa_priv_cmd_register(iface, &from);
487 case PRIVSEP_CMD_UNREGISTER:
488 wpa_priv_cmd_unregister(iface, &from);
490 case PRIVSEP_CMD_SCAN:
491 wpa_priv_cmd_scan(iface, cmd_buf, cmd_len);
493 case PRIVSEP_CMD_GET_SCAN_RESULTS:
494 wpa_priv_cmd_get_scan_results(iface, &from);
496 case PRIVSEP_CMD_ASSOCIATE:
497 wpa_priv_cmd_associate(iface, cmd_buf, cmd_len);
499 case PRIVSEP_CMD_GET_BSSID:
500 wpa_priv_cmd_get_bssid(iface, &from);
502 case PRIVSEP_CMD_GET_SSID:
503 wpa_priv_cmd_get_ssid(iface, &from);
505 case PRIVSEP_CMD_SET_KEY:
506 wpa_priv_cmd_set_key(iface, cmd_buf, cmd_len);
508 case PRIVSEP_CMD_GET_CAPA:
509 wpa_priv_cmd_get_capa(iface, &from);
511 case PRIVSEP_CMD_L2_REGISTER:
512 wpa_priv_cmd_l2_register(iface, &from, cmd_buf, cmd_len);
514 case PRIVSEP_CMD_L2_UNREGISTER:
515 wpa_priv_cmd_l2_unregister(iface, &from);
517 case PRIVSEP_CMD_L2_NOTIFY_AUTH_START:
518 wpa_priv_cmd_l2_notify_auth_start(iface, &from);
520 case PRIVSEP_CMD_L2_SEND:
521 wpa_priv_cmd_l2_send(iface, &from, cmd_buf, cmd_len);
523 case PRIVSEP_CMD_SET_COUNTRY:
525 if (pos + cmd_len >= buf + sizeof(buf))
528 wpa_priv_cmd_set_country(iface, pos);
534 static void wpa_priv_interface_deinit(struct wpa_priv_interface *iface)
536 if (iface->drv_priv && iface->driver->deinit)
537 iface->driver->deinit(iface->drv_priv);
539 if (iface->fd >= 0) {
540 eloop_unregister_read_sock(iface->fd);
542 unlink(iface->sock_name);
546 l2_packet_deinit(iface->l2);
548 os_free(iface->ifname);
549 os_free(iface->driver_name);
550 os_free(iface->sock_name);
555 extern struct wpa_driver_ops *wpa_drivers[];
557 static struct wpa_priv_interface *
558 wpa_priv_interface_init(const char *dir, const char *params)
560 struct wpa_priv_interface *iface;
563 struct sockaddr_un addr;
566 pos = os_strchr(params, ':');
570 iface = os_zalloc(sizeof(*iface));
576 iface->driver_name = os_malloc(len + 1);
577 if (iface->driver_name == NULL) {
578 wpa_priv_interface_deinit(iface);
581 os_memcpy(iface->driver_name, params, len);
582 iface->driver_name[len] = '\0';
584 for (i = 0; wpa_drivers[i]; i++) {
585 if (os_strcmp(iface->driver_name,
586 wpa_drivers[i]->name) == 0) {
587 iface->driver = wpa_drivers[i];
591 if (iface->driver == NULL) {
592 wpa_printf(MSG_ERROR, "Unsupported driver '%s'",
594 wpa_priv_interface_deinit(iface);
599 iface->ifname = os_strdup(pos);
600 if (iface->ifname == NULL) {
601 wpa_priv_interface_deinit(iface);
605 len = os_strlen(dir) + 1 + os_strlen(iface->ifname);
606 iface->sock_name = os_malloc(len + 1);
607 if (iface->sock_name == NULL) {
608 wpa_priv_interface_deinit(iface);
612 os_snprintf(iface->sock_name, len + 1, "%s/%s", dir, iface->ifname);
613 if (os_strlen(iface->sock_name) >= sizeof(addr.sun_path)) {
614 wpa_priv_interface_deinit(iface);
618 iface->fd = socket(PF_UNIX, SOCK_DGRAM, 0);
620 perror("socket(PF_UNIX)");
621 wpa_priv_interface_deinit(iface);
625 os_memset(&addr, 0, sizeof(addr));
626 addr.sun_family = AF_UNIX;
627 os_strlcpy(addr.sun_path, iface->sock_name, sizeof(addr.sun_path));
629 if (bind(iface->fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
630 wpa_printf(MSG_DEBUG, "bind(PF_UNIX) failed: %s",
632 if (connect(iface->fd, (struct sockaddr *) &addr,
634 wpa_printf(MSG_DEBUG, "Socket exists, but does not "
635 "allow connections - assuming it was "
636 "leftover from forced program termination");
637 if (unlink(iface->sock_name) < 0) {
638 perror("unlink[ctrl_iface]");
639 wpa_printf(MSG_ERROR, "Could not unlink "
640 "existing ctrl_iface socket '%s'",
644 if (bind(iface->fd, (struct sockaddr *) &addr,
646 perror("wpa-priv-iface-init: bind(PF_UNIX)");
649 wpa_printf(MSG_DEBUG, "Successfully replaced leftover "
650 "socket '%s'", iface->sock_name);
652 wpa_printf(MSG_INFO, "Socket exists and seems to be "
653 "in use - cannot override it");
654 wpa_printf(MSG_INFO, "Delete '%s' manually if it is "
655 "not used anymore", iface->sock_name);
660 if (chmod(iface->sock_name, S_IRWXU | S_IRWXG | S_IRWXO) < 0) {
665 eloop_register_read_sock(iface->fd, wpa_priv_receive, iface, NULL);
670 wpa_priv_interface_deinit(iface);
675 static int wpa_priv_send_event(struct wpa_priv_interface *iface, int event,
676 const void *data, size_t data_len)
681 io[0].iov_base = &event;
682 io[0].iov_len = sizeof(event);
683 io[1].iov_base = (u8 *) data;
684 io[1].iov_len = data_len;
686 os_memset(&msg, 0, sizeof(msg));
688 msg.msg_iovlen = data ? 2 : 1;
689 msg.msg_name = &iface->drv_addr;
690 msg.msg_namelen = sizeof(iface->drv_addr);
692 if (sendmsg(iface->fd, &msg, 0) < 0) {
693 perror("sendmsg(wpas_socket)");
701 static void wpa_priv_send_assoc(struct wpa_priv_interface *iface, int event,
702 union wpa_event_data *data)
704 size_t buflen = 3 * sizeof(int);
709 buflen += data->assoc_info.req_ies_len +
710 data->assoc_info.resp_ies_len +
711 data->assoc_info.beacon_ies_len;
714 buf = os_malloc(buflen);
720 if (data && data->assoc_info.req_ies) {
721 len = data->assoc_info.req_ies_len;
722 os_memcpy(pos, &len, sizeof(int));
724 os_memcpy(pos, data->assoc_info.req_ies, len);
728 os_memcpy(pos, &len, sizeof(int));
732 if (data && data->assoc_info.resp_ies) {
733 len = data->assoc_info.resp_ies_len;
734 os_memcpy(pos, &len, sizeof(int));
736 os_memcpy(pos, data->assoc_info.resp_ies, len);
740 os_memcpy(pos, &len, sizeof(int));
744 if (data && data->assoc_info.beacon_ies) {
745 len = data->assoc_info.beacon_ies_len;
746 os_memcpy(pos, &len, sizeof(int));
748 os_memcpy(pos, data->assoc_info.beacon_ies, len);
752 os_memcpy(pos, &len, sizeof(int));
756 wpa_priv_send_event(iface, event, buf, buflen);
762 static void wpa_priv_send_interface_status(struct wpa_priv_interface *iface,
763 union wpa_event_data *data)
773 ievent = data->interface_status.ievent;
774 maxlen = sizeof(data->interface_status.ifname);
775 ifname = data->interface_status.ifname;
776 for (len = 0; len < maxlen && ifname[len]; len++)
779 buf = os_malloc(sizeof(int) + len);
783 os_memcpy(buf, &ievent, sizeof(int));
784 os_memcpy(buf + sizeof(int), ifname, len);
786 wpa_priv_send_event(iface, PRIVSEP_EVENT_INTERFACE_STATUS,
787 buf, sizeof(int) + len);
794 static void wpa_priv_send_ft_response(struct wpa_priv_interface *iface,
795 union wpa_event_data *data)
800 if (data == NULL || data->ft_ies.ies == NULL)
803 len = sizeof(int) + ETH_ALEN + data->ft_ies.ies_len;
804 buf = os_malloc(len);
809 os_memcpy(pos, &data->ft_ies.ft_action, sizeof(int));
811 os_memcpy(pos, data->ft_ies.target_ap, ETH_ALEN);
813 os_memcpy(pos, data->ft_ies.ies, data->ft_ies.ies_len);
815 wpa_priv_send_event(iface, PRIVSEP_EVENT_FT_RESPONSE, buf, len);
822 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
823 union wpa_event_data *data)
825 struct wpa_priv_interface *iface = ctx;
827 wpa_printf(MSG_DEBUG, "%s - event=%d", __func__, event);
829 if (!iface->wpas_registered) {
830 wpa_printf(MSG_DEBUG, "Driver event received, but "
831 "wpa_supplicant not registered");
837 wpa_priv_send_assoc(iface, PRIVSEP_EVENT_ASSOC, data);
840 wpa_priv_send_event(iface, PRIVSEP_EVENT_DISASSOC, NULL, 0);
842 case EVENT_ASSOCINFO:
845 wpa_priv_send_assoc(iface, PRIVSEP_EVENT_ASSOCINFO, data);
847 case EVENT_MICHAEL_MIC_FAILURE:
850 wpa_priv_send_event(iface, PRIVSEP_EVENT_MICHAEL_MIC_FAILURE,
851 &data->michael_mic_failure.unicast,
854 case EVENT_SCAN_RESULTS:
855 wpa_priv_send_event(iface, PRIVSEP_EVENT_SCAN_RESULTS, NULL,
858 case EVENT_INTERFACE_STATUS:
859 wpa_priv_send_interface_status(iface, data);
861 case EVENT_PMKID_CANDIDATE:
864 wpa_priv_send_event(iface, PRIVSEP_EVENT_PMKID_CANDIDATE,
865 &data->pmkid_candidate,
866 sizeof(struct pmkid_candidate));
871 wpa_priv_send_event(iface, PRIVSEP_EVENT_STKSTART,
872 &data->stkstart.peer, ETH_ALEN);
874 case EVENT_FT_RESPONSE:
875 wpa_priv_send_ft_response(iface, data);
878 wpa_printf(MSG_DEBUG, "Unsupported driver event %d - TODO",
885 void wpa_supplicant_rx_eapol(void *ctx, const u8 *src_addr,
886 const u8 *buf, size_t len)
888 struct wpa_priv_interface *iface = ctx;
891 int event = PRIVSEP_EVENT_RX_EAPOL;
893 wpa_printf(MSG_DEBUG, "RX EAPOL from driver");
894 io[0].iov_base = &event;
895 io[0].iov_len = sizeof(event);
896 io[1].iov_base = (u8 *) src_addr;
897 io[1].iov_len = ETH_ALEN;
898 io[2].iov_base = (u8 *) buf;
901 os_memset(&msg, 0, sizeof(msg));
904 msg.msg_name = &iface->drv_addr;
905 msg.msg_namelen = sizeof(iface->drv_addr);
907 if (sendmsg(iface->fd, &msg, 0) < 0)
908 perror("sendmsg(wpas_socket)");
912 static void wpa_priv_terminate(int sig, void *signal_ctx)
914 wpa_printf(MSG_DEBUG, "wpa_priv termination requested");
919 static void wpa_priv_fd_workaround(void)
923 /* When started from pcmcia-cs scripts, wpa_supplicant might start with
924 * fd 0, 1, and 2 closed. This will cause some issues because many
925 * places in wpa_supplicant are still printing out to stdout. As a
926 * workaround, make sure that fd's 0, 1, and 2 are not used for other
928 for (i = 0; i < 3; i++) {
929 s = open("/dev/null", O_RDWR);
935 #endif /* __linux__ */
939 static void usage(void)
941 printf("wpa_priv v" VERSION_STR "\n"
942 "Copyright (c) 2007-2009, Jouni Malinen <j@w1.fi> and "
946 " wpa_priv [-Bdd] [-P<pid file>] <driver:ifname> "
947 "[driver:ifname ...]\n");
951 extern int wpa_debug_level;
953 int main(int argc, char *argv[])
957 char *pid_file = NULL;
959 char *ctrl_dir = "/var/run/wpa_priv";
960 struct wpa_priv_interface *interfaces = NULL, *iface;
962 if (os_program_init())
965 wpa_priv_fd_workaround();
968 c = getopt(argc, argv, "Bc:dP:");
982 pid_file = os_rel2abs_path(optarg);
990 if (optind >= argc) {
995 wpa_printf(MSG_DEBUG, "wpa_priv control directory: '%s'", ctrl_dir);
998 wpa_printf(MSG_ERROR, "Failed to initialize event loop");
1002 for (i = optind; i < argc; i++) {
1003 wpa_printf(MSG_DEBUG, "Adding driver:interface %s", argv[i]);
1004 iface = wpa_priv_interface_init(ctrl_dir, argv[i]);
1007 iface->next = interfaces;
1011 if (daemonize && os_daemonize(pid_file))
1014 eloop_register_signal_terminate(wpa_priv_terminate, NULL);
1022 struct wpa_priv_interface *prev = iface;
1023 iface = iface->next;
1024 wpa_priv_interface_deinit(prev);
1029 os_daemonize_terminate(pid_file);
1031 os_program_deinit();