33 #include "openbsd-compat/sys-queue.h"
54 	socklen_t len = sizeof(dev) - 1;  in sys_get_rdomain()
56 	if (getsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, dev, &len) == -1) {  in sys_get_rdomain()
57 		error("%s: cannot determine VRF for fd=%d : %s",  in sys_get_rdomain()
69 	    name, strlen(name)) == -1) {  in sys_set_rdomain()
70 		error("%s: setsockopt(%d, SO_BINDTODEVICE, %s): %s",  in sys_set_rdomain()
72 		return -1;  in sys_set_rdomain()
87 	if ((fd = socket(AF_INET, SOCK_STREAM, 0)) == -1)  in sys_valid_rdomain()
90 	    name, strlen(name)) == -1) {  in sys_valid_rdomain()
108 	return -1;  in sys_set_rdomain()
120 	fatal("%s: not supported", __func__);  in sys_set_process_rdomain()
126  * uses some preprocessor definitions for various platform-specific
136  * System-specific tunnel open function
144 sys_tun_open(int tun, int mode, char **ifname)  in sys_tun_open()  argument
147 	int fd = -1;  in sys_tun_open()
152 	if ((fd = open(TUN_CTRL_DEV, O_RDWR)) == -1) {  in sys_tun_open()
153 		debug("%s: failed to open tunnel control device \"%s\": %s",  in sys_tun_open()
155 		return (-1);  in sys_tun_open()
160 	if (mode == SSH_TUNMODE_ETHERNET) {  in sys_tun_open()
171 			debug("%s: invalid tunnel id %x: %s", __func__,  in sys_tun_open()
178 	if (ioctl(fd, TUNSETIFF, &ifr) == -1) {  in sys_tun_open()
179 		debug("%s: failed to configure tunnel (mode %d): %s", __func__,  in sys_tun_open()
180 		    mode, strerror(errno));  in sys_tun_open()
185 		debug("%s: tunnel mode %d fd %d", __func__, mode, fd);  in sys_tun_open()
187 		debug("%s: %s mode %d fd %d", __func__, ifr.ifr_name, mode, fd);  in sys_tun_open()
196 	return (-1);  in sys_tun_open()
209 sys_tun_open(int tun, int mode, char **ifname)  in sys_tun_open()  argument
213 	int fd = -1, sock;  in sys_tun_open()
222 	if (mode == SSH_TUNMODE_ETHERNET) {  in sys_tun_open()
224 		debug("%s: no layer 2 tunnelling support", __func__);  in sys_tun_open()
225 		return (-1);  in sys_tun_open()
233 		snprintf(name, sizeof(name), "/dev/%s%d", tunbase, tun);  in sys_tun_open()
236 		for (tun = 100; tun >= 0; tun--) {  in sys_tun_open()
237 			snprintf(name, sizeof(name), "/dev/%s%d",  in sys_tun_open()
243 		debug("%s: invalid tunnel %u\n", __func__, tun);  in sys_tun_open()
244 		return (-1);  in sys_tun_open()
248 		debug("%s: %s open failed: %s", __func__, name,  in sys_tun_open()
250 		return (-1);  in sys_tun_open()
256 	if (mode != SSH_TUNMODE_ETHERNET &&  in sys_tun_open()
257 	    ioctl(fd, TUNSIFHEAD, &flag) == -1) {  in sys_tun_open()
258 		debug("%s: ioctl(%d, TUNSIFHEAD, 1): %s", __func__, fd,  in sys_tun_open()
264 	debug("%s: %s mode %d fd %d", __func__, name, mode, fd);  in sys_tun_open()
266 	/* Set the tunnel device operation mode */  in sys_tun_open()
267 	snprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "%s%d", tunbase, tun);  in sys_tun_open()
268 	if ((sock = socket(PF_UNIX, SOCK_STREAM, 0)) == -1)  in sys_tun_open()
271 	if (ioctl(sock, SIOCGIFFLAGS, &ifr) == -1)  in sys_tun_open()
275 		if (ioctl(sock, SIOCSIFFLAGS, &ifr) == -1)  in sys_tun_open()
290 	debug("%s: failed to set %s mode %d: %s", __func__, name,  in sys_tun_open()
291 	    mode, strerror(errno));  in sys_tun_open()
292 	return (-1);  in sys_tun_open()
297  * System-specific channel filters
303  * IP packets using OpenBSD's numbers.
324 		return -1;  in sys_tun_infilter()
328 	if (len <= sizeof(iph) || len > sizeof(rbuf) - 4)  in sys_tun_infilter()
329 		return -1;  in sys_tun_infilter()
341 		return -1;  in sys_tun_infilter()
347 	if ((r = sshbuf_put_string(c->input, ptr, len)) != 0)  in sys_tun_infilter()
348 		fatal("%s: buffer error: %s", __func__, ssh_err(r));  in sys_tun_infilter()
361 	if ((r = sshbuf_get_string(c->output, data, dlen)) != 0)  in sys_tun_outfilter()
362 		fatal("%s: buffer error: %s", __func__, ssh_err(r));  in sys_tun_outfilter()
369 	*dlen -= sizeof(af);  in sys_tun_outfilter()