2 * Copyright (C) 2011 matt mooney <mfm@muteddisk.com>
3 * 2005-2007 Takahiro Hirofuchi
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
20 #include "../config.h"
29 #include <sys/types.h>
31 #include <arpa/inet.h>
32 #include <sys/socket.h>
33 #include <netinet/in.h>
43 #include "usbip_host_driver.h"
44 #include "usbip_common.h"
45 #include "usbip_network.h"
49 #define PROGNAME "usbipd"
52 #define MAIN_LOOP_TIMEOUT 10
54 #define DEFAULT_PID_FILE "/var/run/" PROGNAME ".pid"
56 static const char usbip_version_string[] = PACKAGE_STRING;
58 static const char usbipd_help_string[] =
59 "usage: usbipd [options]\n"
62 " Bind to IPv4. Default is both.\n"
65 " Bind to IPv6. Default is both.\n"
68 " Run as a daemon process.\n"
71 " Print debugging information.\n"
73 " -PFILE, --pid FILE\n"
74 " Write process id to FILE.\n"
75 " If no FILE specified, use " DEFAULT_PID_FILE "\n"
77 " -tPORT, --tcp-port PORT\n"
78 " Listen on TCP/IP port PORT.\n"
86 static void usbipd_help(void)
88 printf("%s\n", usbipd_help_string);
91 static int recv_request_import(int sockfd)
93 struct op_import_request req;
94 struct usbip_exported_device *edev;
95 struct usbip_usb_device pdu_udev;
101 memset(&req, 0, sizeof(req));
103 rc = usbip_net_recv(sockfd, &req, sizeof(req));
105 dbg("usbip_net_recv failed: import request");
108 PACK_OP_IMPORT_REQUEST(0, &req);
110 list_for_each(i, &host_driver->edev_list) {
111 edev = list_entry(i, struct usbip_exported_device, node);
112 if (!strncmp(req.busid, edev->udev.busid, SYSFS_BUS_ID_SIZE)) {
113 info("found requested device: %s", req.busid);
120 /* should set TCP_NODELAY for usbip */
121 usbip_net_set_nodelay(sockfd);
123 /* export device needs a TCP/IP socket descriptor */
124 rc = usbip_host_export_device(edev, sockfd);
128 info("requested device not found: %s", req.busid);
132 rc = usbip_net_send_op_common(sockfd, OP_REP_IMPORT,
133 (!error ? ST_OK : ST_NA));
135 dbg("usbip_net_send_op_common failed: %#0x", OP_REP_IMPORT);
140 dbg("import request busid %s: failed", req.busid);
144 memcpy(&pdu_udev, &edev->udev, sizeof(pdu_udev));
145 usbip_net_pack_usb_device(1, &pdu_udev);
147 rc = usbip_net_send(sockfd, &pdu_udev, sizeof(pdu_udev));
149 dbg("usbip_net_send failed: devinfo");
153 dbg("import request busid %s: complete", req.busid);
158 static int send_reply_devlist(int connfd)
160 struct usbip_exported_device *edev;
161 struct usbip_usb_device pdu_udev;
162 struct usbip_usb_interface pdu_uinf;
163 struct op_devlist_reply reply;
168 /* number of exported devices */
169 list_for_each(j, &host_driver->edev_list) {
172 info("exportable devices: %d", reply.ndev);
174 rc = usbip_net_send_op_common(connfd, OP_REP_DEVLIST, ST_OK);
176 dbg("usbip_net_send_op_common failed: %#0x", OP_REP_DEVLIST);
179 PACK_OP_DEVLIST_REPLY(1, &reply);
181 rc = usbip_net_send(connfd, &reply, sizeof(reply));
183 dbg("usbip_net_send failed: %#0x", OP_REP_DEVLIST);
187 list_for_each(j, &host_driver->edev_list) {
188 edev = list_entry(j, struct usbip_exported_device, node);
189 dump_usb_device(&edev->udev);
190 memcpy(&pdu_udev, &edev->udev, sizeof(pdu_udev));
191 usbip_net_pack_usb_device(1, &pdu_udev);
193 rc = usbip_net_send(connfd, &pdu_udev, sizeof(pdu_udev));
195 dbg("usbip_net_send failed: pdu_udev");
199 for (i = 0; i < edev->udev.bNumInterfaces; i++) {
200 dump_usb_interface(&edev->uinf[i]);
201 memcpy(&pdu_uinf, &edev->uinf[i], sizeof(pdu_uinf));
202 usbip_net_pack_usb_interface(1, &pdu_uinf);
204 rc = usbip_net_send(connfd, &pdu_uinf,
207 err("usbip_net_send failed: pdu_uinf");
216 static int recv_request_devlist(int connfd)
218 struct op_devlist_request req;
221 memset(&req, 0, sizeof(req));
223 rc = usbip_net_recv(connfd, &req, sizeof(req));
225 dbg("usbip_net_recv failed: devlist request");
229 rc = send_reply_devlist(connfd);
231 dbg("send_reply_devlist failed");
238 static int recv_pdu(int connfd)
240 uint16_t code = OP_UNSPEC;
243 ret = usbip_net_recv_op_common(connfd, &code);
245 dbg("could not receive opcode: %#0x", code);
249 ret = usbip_host_refresh_device_list();
251 dbg("could not refresh device list: %d", ret);
255 info("received request: %#0x(%d)", code, connfd);
258 ret = recv_request_devlist(connfd);
261 ret = recv_request_import(connfd);
266 err("received an unknown opcode: %#0x", code);
271 info("request %#0x(%d): complete", code, connfd);
273 info("request %#0x(%d): failed", code, connfd);
279 static int tcpd_auth(int connfd)
281 struct request_info request;
284 request_init(&request, RQ_DAEMON, PROGNAME, RQ_FILE, connfd, 0);
286 rc = hosts_access(&request);
294 static int do_accept(int listenfd)
297 struct sockaddr_storage ss;
298 socklen_t len = sizeof(ss);
299 char host[NI_MAXHOST], port[NI_MAXSERV];
302 memset(&ss, 0, sizeof(ss));
304 connfd = accept(listenfd, (struct sockaddr *)&ss, &len);
306 err("failed to accept connection");
310 rc = getnameinfo((struct sockaddr *)&ss, len, host, sizeof(host),
311 port, sizeof(port), NI_NUMERICHOST | NI_NUMERICSERV);
313 err("getnameinfo: %s", gai_strerror(rc));
316 rc = tcpd_auth(connfd);
318 info("denied access from %s", host);
323 info("connection from %s:%s", host, port);
328 int process_request(int listenfd)
333 connfd = do_accept(listenfd);
346 static void addrinfo_to_text(struct addrinfo *ai, char buf[],
347 const size_t buf_size)
349 char hbuf[NI_MAXHOST];
350 char sbuf[NI_MAXSERV];
355 rc = getnameinfo(ai->ai_addr, ai->ai_addrlen, hbuf, sizeof(hbuf),
356 sbuf, sizeof(sbuf), NI_NUMERICHOST | NI_NUMERICSERV);
358 err("getnameinfo: %s", gai_strerror(rc));
360 snprintf(buf, buf_size, "%s:%s", hbuf, sbuf);
363 static int listen_all_addrinfo(struct addrinfo *ai_head, int sockfdlist[],
367 int ret, nsockfd = 0;
368 const size_t ai_buf_size = NI_MAXHOST + NI_MAXSERV + 2;
369 char ai_buf[ai_buf_size];
371 for (ai = ai_head; ai && nsockfd < maxsockfd; ai = ai->ai_next) {
374 addrinfo_to_text(ai, ai_buf, ai_buf_size);
375 dbg("opening %s", ai_buf);
376 sock = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
378 err("socket: %s: %d (%s)",
379 ai_buf, errno, strerror(errno));
383 usbip_net_set_reuseaddr(sock);
384 usbip_net_set_nodelay(sock);
385 /* We use seperate sockets for IPv4 and IPv6
386 * (see do_standalone_mode()) */
387 usbip_net_set_v6only(sock);
389 if (sock >= FD_SETSIZE) {
390 err("FD_SETSIZE: %s: sock=%d, max=%d",
391 ai_buf, sock, FD_SETSIZE);
396 ret = bind(sock, ai->ai_addr, ai->ai_addrlen);
398 err("bind: %s: %d (%s)",
399 ai_buf, errno, strerror(errno));
404 ret = listen(sock, SOMAXCONN);
406 err("listen: %s: %d (%s)",
407 ai_buf, errno, strerror(errno));
412 info("listening on %s", ai_buf);
413 sockfdlist[nsockfd++] = sock;
419 static struct addrinfo *do_getaddrinfo(char *host, int ai_family)
421 struct addrinfo hints, *ai_head;
424 memset(&hints, 0, sizeof(hints));
425 hints.ai_family = ai_family;
426 hints.ai_socktype = SOCK_STREAM;
427 hints.ai_flags = AI_PASSIVE;
429 rc = getaddrinfo(host, usbip_port_string, &hints, &ai_head);
431 err("failed to get a network address %s: %s", usbip_port_string,
439 static void signal_handler(int i)
441 dbg("received '%s' signal", strsignal(i));
444 static void set_signal(void)
446 struct sigaction act;
448 memset(&act, 0, sizeof(act));
449 act.sa_handler = signal_handler;
450 sigemptyset(&act.sa_mask);
451 sigaction(SIGTERM, &act, NULL);
452 sigaction(SIGINT, &act, NULL);
453 act.sa_handler = SIG_IGN;
454 sigaction(SIGCLD, &act, NULL);
457 static const char *pid_file;
459 static void write_pid_file(void)
462 dbg("creating pid file %s", pid_file);
465 fp = fopen(pid_file, "w");
467 err("pid_file: %s: %d (%s)",
468 pid_file, errno, strerror(errno));
471 fprintf(fp, "%d\n", getpid());
476 static void remove_pid_file(void)
479 dbg("removing pid file %s", pid_file);
484 static int do_standalone_mode(int daemonize, int ipv4, int ipv6)
486 struct addrinfo *ai_head;
487 int sockfdlist[MAXSOCKFD];
491 struct timespec timeout;
494 if (usbip_host_driver_open()) {
495 err("please load " USBIP_CORE_MOD_NAME ".ko and "
496 USBIP_HOST_DRV_NAME ".ko!");
501 if (daemon(0, 0) < 0) {
502 err("daemonizing failed: %s", strerror(errno));
503 usbip_host_driver_close();
507 usbip_use_syslog = 1;
512 info("starting " PROGNAME " (%s)", usbip_version_string);
515 * To suppress warnings on systems with bindv6only disabled
516 * (default), we use seperate sockets for IPv6 and IPv4 and set
517 * IPV6_V6ONLY on the IPv6 sockets.
526 ai_head = do_getaddrinfo(NULL, family);
528 usbip_host_driver_close();
531 nsockfd = listen_all_addrinfo(ai_head, sockfdlist,
532 sizeof(sockfdlist) / sizeof(*sockfdlist));
533 freeaddrinfo(ai_head);
535 err("failed to open a listening socket");
536 usbip_host_driver_close();
540 dbg("listening on %d address%s", nsockfd, (nsockfd == 1) ? "" : "es");
542 fds = calloc(nsockfd, sizeof(struct pollfd));
543 for (i = 0; i < nsockfd; i++) {
544 fds[i].fd = sockfdlist[i];
545 fds[i].events = POLLIN;
547 timeout.tv_sec = MAIN_LOOP_TIMEOUT;
550 sigfillset(&sigmask);
551 sigdelset(&sigmask, SIGTERM);
552 sigdelset(&sigmask, SIGINT);
558 r = ppoll(fds, nsockfd, &timeout, &sigmask);
560 dbg("%s", strerror(errno));
563 for (i = 0; i < nsockfd; i++) {
564 if (fds[i].revents & POLLIN) {
565 dbg("read event on fd[%d]=%d",
567 process_request(sockfdlist[i]);
571 dbg("heartbeat timeout on ppoll()");
575 info("shutting down " PROGNAME);
577 usbip_host_driver_close();
582 int main(int argc, char *argv[])
584 static const struct option longopts[] = {
585 { "ipv4", no_argument, NULL, '4' },
586 { "ipv6", no_argument, NULL, '6' },
587 { "daemon", no_argument, NULL, 'D' },
588 { "daemon", no_argument, NULL, 'D' },
589 { "debug", no_argument, NULL, 'd' },
590 { "pid", optional_argument, NULL, 'P' },
591 { "tcp-port", required_argument, NULL, 't' },
592 { "help", no_argument, NULL, 'h' },
593 { "version", no_argument, NULL, 'v' },
598 cmd_standalone_mode = 1,
604 int ipv4 = 0, ipv6 = 0;
609 usbip_use_stderr = 1;
610 usbip_use_syslog = 0;
613 err("not running as root?");
615 cmd = cmd_standalone_mode;
617 opt = getopt_long(argc, argv, "46DdP::t:hv", longopts, NULL);
639 pid_file = optarg ? optarg : DEFAULT_PID_FILE;
642 usbip_setup_port_number(optarg);
658 case cmd_standalone_mode:
659 rc = do_standalone_mode(daemonize, ipv4, ipv6);
663 printf(PROGNAME " (%s)\n", usbip_version_string);
676 return (rc > -1 ? EXIT_SUCCESS : EXIT_FAILURE);