1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2015 Joyent, Inc.
24 */
25
26 /*
27 * lxinit performs zone-specific initialization prior to handing control to the
28 * guest Linux init. This primarily consists of:
29 *
30 * - Starting ipmgmtd
31 * - Configuring network interfaces
32 * - Adding a default route
33 */
34
35 #include <ctype.h>
36 #include <errno.h>
37 #include <fcntl.h>
38 #include <libgen.h>
39 #include <limits.h>
40 #include <net/if.h>
41 #include <stdarg.h>
42 #include <stdio.h>
43 #include <stdlib.h>
44 #include <string.h>
45 #include <strings.h>
46 #include <stropts.h>
47 #include <sys/ioccom.h>
48 #include <sys/stat.h>
49 #include <sys/systeminfo.h>
50 #include <sys/sockio.h>
51 #include <sys/types.h>
52 #include <sys/wait.h>
53 #include <sys/varargs.h>
54 #include <unistd.h>
55 #include <libintl.h>
56 #include <locale.h>
57 #include <libcmdutils.h>
58
59 #include <netinet/dhcp.h>
60 #include <dhcpagent_util.h>
61 #include <dhcpagent_ipc.h>
62
63 #include <arpa/inet.h>
64 #include <net/route.h>
65 #include <libipadm.h>
66 #include <libzonecfg.h>
67 #include <libinetutil.h>
68 #include <sys/lx_brand.h>
69
70 #include "run_command.h"
71
72 static void lxi_err(char *msg, ...) __NORETURN;
73 static void lxi_err(char *msg, ...);
74
75 #define IPMGMTD_PATH "/lib/inet/ipmgmtd"
76 #define IN_NDPD_PATH "/usr/lib/inet/in.ndpd"
77
78 #define PREFIX_LOG_WARN "lx_init warn: "
79 #define PREFIX_LOG_ERR "lx_init err: "
80
81 #define RTMBUFSZ (sizeof (struct rt_msghdr) + \
82 (3 * sizeof (struct sockaddr_in)))
83
84 ipadm_handle_t iph;
85
86 static void
87 lxi_err(char *msg, ...)
88 {
89 char buf[1024];
90 int len;
91 va_list ap;
92
93 va_start(ap, msg);
94 /*LINTED*/
95 len = vsnprintf(buf, sizeof (buf), msg, ap);
96 va_end(ap);
97
98 (void) write(1, PREFIX_LOG_ERR, strlen(PREFIX_LOG_ERR));
99 (void) write(1, buf, len);
100 (void) write(1, "\n", 1);
101
102 /*
103 * Since a non-zero exit will cause the zone to reboot, a pause here
104 * will prevent a mis-configured zone from spinning in a reboot loop.
105 */
106 (void) pause();
107 exit(1);
108 /*NOTREACHED*/
109 }
110
111 static void
112 lxi_warn(char *msg, ...)
113 {
114 char buf[1024];
115 int len;
116 va_list ap;
117
118 va_start(ap, msg);
119 /*LINTED*/
120 len = vsnprintf(buf, sizeof (buf), msg, ap);
121 va_end(ap);
122
123 (void) write(1, PREFIX_LOG_WARN, strlen(PREFIX_LOG_WARN));
124 (void) write(1, buf, len);
125 (void) write(1, "\n", 1);
126 }
127
128 static void
129 lxi_log_open()
130 {
131 int fd = open("/dev/console", O_WRONLY);
132
133 if (fd < 0) {
134 /* hard to log at this point... */
135 exit(1);
136 } else if (fd != 1) {
137 /*
138 * Use stdout as the log fd. Init should start with no files
139 * open, so we should be required to perform this relocation
140 * every time.
141 */
142 if (dup2(fd, 1) != 1) {
143 exit(1);
144 }
145 }
146 }
147
148 static void
149 lxi_log_close()
150 {
151 (void) close(0);
152 (void) close(1);
153 }
154
155 static zone_dochandle_t
156 lxi_config_open()
157 {
158 zoneid_t zoneid;
159 char zonename[ZONENAME_MAX];
160 zone_dochandle_t handle;
161 zone_iptype_t iptype;
162 int res;
163
164 zoneid = getzoneid();
165 if (getzonenamebyid(zoneid, zonename, sizeof (zonename)) < 0) {
166 lxi_err("could not determine zone name");
167 }
168
169 if ((handle = zonecfg_init_handle()) == NULL)
170 lxi_err("internal libzonecfg.so.1 error", 0);
171
172 if ((res = zonecfg_get_handle(zonename, handle)) != Z_OK) {
173 zonecfg_fini_handle(handle);
174 lxi_err("could not locate zone config %d", res);
175 }
176
177 /*
178 * Only exclusive stack is supported.
179 */
180 if (zonecfg_get_iptype(handle, &iptype) != Z_OK ||
181 iptype != ZS_EXCLUSIVE) {
182 zonecfg_fini_handle(handle);
183 lxi_err("lx zones do not support shared IP stacks");
184 }
185
186 return (handle);
187
188 }
189
190 static int
191 zone_find_attr(struct zone_res_attrtab *attrs, const char *name,
192 const char **result)
193 {
194 while (attrs != NULL) {
195 if (strncmp(attrs->zone_res_attr_name, name,
196 MAXNAMELEN) == 0) {
197 *result = attrs->zone_res_attr_value;
198 return (0);
199 }
200 attrs = attrs->zone_res_attr_next;
201 }
202 return (-1);
203 }
204
205 static void
206 lxi_svc_start(char *name, char *path, char *fmri)
207 {
208 pid_t pid;
209 int status;
210 char *argv[] = {
211 NULL,
212 NULL
213 };
214 char *envp[] = {
215 NULL,
216 NULL
217 };
218 argv[0] = name;
219 envp[0] = fmri;
220
221 pid = fork();
222 if (pid == -1) {
223 lxi_err("fork() failed: %s", strerror(errno));
224 }
225
226 if (pid == 0) {
227 /* child */
228 const char *zroot = zone_get_nroot();
229 char cmd[MAXPATHLEN];
230
231 /*
232 * Construct the full path to the binary, including the native
233 * system root (e.g. "/native") if in use for this zone:
234 */
235 (void) snprintf(cmd, sizeof (cmd), "%s%s", zroot != NULL ?
236 zroot : "", path);
237
238 (void) execve(cmd, argv, envp);
239
240 lxi_err("execve(%s) failed: %s", cmd, strerror(errno));
241 /* NOTREACHED */
242 }
243
244 /* parent */
245 while (wait(&status) != pid)
246 ;
247
248 if (WIFEXITED(status)) {
249 if (WEXITSTATUS(status) != 0) {
250 lxi_err("%s[%d] exited: %d", name,
251 (int)pid, WEXITSTATUS(status));
252 }
253 } else if (WIFSIGNALED(status)) {
254 lxi_err("%s[%d] died on signal: %d", name,
255 (int)pid, WTERMSIG(status));
256 } else {
257 lxi_err("%s[%d] failed in unknown way", name,
258 (int)pid);
259 }
260 }
261
262 void
263 lxi_net_ipmgmtd_start()
264 {
265 lxi_svc_start("ipmgmtd", IPMGMTD_PATH,
266 "SMF_FMRI=svc:/network/ip-interface-management:default");
267 }
268
269 void
270 lxi_net_ndpd_start()
271 {
272 lxi_svc_start("in.ndpd", IN_NDPD_PATH,
273 "SMF_FMRI=svc:/network/routing/ndp:default");
274 }
275
276
277 static void
278 lxi_net_ipadm_open()
279 {
280 ipadm_status_t status;
281
282 if ((status = ipadm_open(&iph, IPH_LEGACY)) != IPADM_SUCCESS) {
283 lxi_err("Error opening ipadm handle: %s",
284 ipadm_status2str(status));
285 }
286 }
287
288 static void
289 lxi_net_ipadm_close()
290 {
291 ipadm_close(iph);
292 }
293
294 void
295 lxi_net_plumb(const char *iface)
296 {
297 ipadm_status_t status;
298 char ifbuf[LIFNAMSIZ];
299
300 /* ipadm_create_if stomps on ifbuf, so create a copy: */
301 (void) strncpy(ifbuf, iface, sizeof (ifbuf));
302
303 if ((status = ipadm_create_if(iph, ifbuf, AF_INET, IPADM_OPT_ACTIVE))
304 != IPADM_SUCCESS) {
305 lxi_err("ipadm_create_if error %d: %s/v4: %s",
306 status, iface, ipadm_status2str(status));
307 }
308
309 if ((status = ipadm_create_if(iph, ifbuf, AF_INET6, IPADM_OPT_ACTIVE))
310 != IPADM_SUCCESS) {
311 lxi_err("ipadm_create_if error %d: %s/v6: %s",
312 status, iface, ipadm_status2str(status));
313 }
314 }
315
316 static int
317 lxi_getif(int af, char *iface, int len, boolean_t first_ipv4_configured)
318 {
319 struct lifreq lifr;
320 int s = socket(af, SOCK_DGRAM, 0);
321 if (s < 0) {
322 lxi_warn("socket error %d: bringing up %s: %s",
323 errno, iface, strerror(errno));
324 return (-1);
325 }
326
327 /*
328 * We need a new logical interface for every IP address we add, except
329 * for the very first IPv4 address.
330 */
331 if (af == AF_INET6 || first_ipv4_configured) {
332 (void) strncpy(lifr.lifr_name, iface, sizeof (lifr.lifr_name));
333 (void) memset(&lifr.lifr_addr, 0, sizeof (lifr.lifr_addr));
334 if (ioctl(s, SIOCLIFADDIF, (caddr_t)&lifr) < 0) {
335 if (close(s) != 0) {
336 lxi_warn("failed to close socket: %s\n",
337 strerror(errno));
338 }
339 return (-1);
340 }
341 (void) strncpy(iface, lifr.lifr_name, len);
342 }
343
344 if (close(s) != 0) {
345 lxi_warn("failed to close socket: %s\n",
346 strerror(errno));
347 }
348 return (0);
349 }
350
351 static int
352 lxi_iface_ip(const char *origiface, const char *addr,
353 boolean_t *first_ipv4_configured)
354 {
355 static int addrnum = 0;
356 ipadm_status_t status;
357 ipadm_addrobj_t ipaddr = NULL;
358 char iface[LIFNAMSIZ];
359 char aobjname[IPADM_AOBJSIZ];
360 int af, err = 0;
361
362 (void) strncpy(iface, origiface, sizeof (iface));
363
364 af = strstr(addr, ":") == NULL ? AF_INET : AF_INET6;
365 if (lxi_getif(af, iface, sizeof (iface), *first_ipv4_configured) != 0) {
366 lxi_warn("failed to create new logical interface "
367 "on %s: %s", origiface, strerror(errno));
368 return (-1);
369 }
370
371 (void) snprintf(aobjname, IPADM_AOBJSIZ, "%s/addr%d", iface,
372 addrnum++);
373
374 if ((status = ipadm_create_addrobj(IPADM_ADDR_STATIC, aobjname,
375 &ipaddr)) != IPADM_SUCCESS) {
376 lxi_warn("ipadm_create_addrobj error %d: addr %s, "
377 "interface %s: %s\n", status, addr, iface,
378 ipadm_status2str(status));
379 return (-2);
380 }
381
382 if ((status = ipadm_set_addr(ipaddr, addr, AF_UNSPEC))
383 != IPADM_SUCCESS) {
384 lxi_warn("ipadm_set_addr error %d: addr %s"
385 ", interface %s: %s\n", status, addr,
386 iface, ipadm_status2str(status));
387 err = -3;
388 goto done;
389 }
390
391 if ((status = ipadm_create_addr(iph, ipaddr,
392 IPADM_OPT_ACTIVE | IPADM_OPT_UP)) != IPADM_SUCCESS) {
393 lxi_warn("ipadm_create_addr error for %s: %s\n", iface,
394 ipadm_status2str(status));
395 err = -4;
396 goto done;
397 }
398
399 if (af == AF_INET) {
400 *first_ipv4_configured = B_TRUE;
401 }
402
403 done:
404 ipadm_destroy_addrobj(ipaddr);
405 return (err);
406 }
407
408 static int
409 lxi_iface_dhcp(const char *origiface, boolean_t *first_ipv4_configured)
410 {
411 dhcp_ipc_request_t *dhcpreq = NULL;
412 dhcp_ipc_reply_t *dhcpreply = NULL;
413 int err = 0, timeout = 5;
414 char iface[LIFNAMSIZ];
415
416 (void) strncpy(iface, origiface, sizeof (iface));
417
418 if (lxi_getif(AF_INET, iface, sizeof (iface), *first_ipv4_configured)
419 != 0) {
420 lxi_warn("failed to create new logical interface "
421 "on %s: %s", origiface, strerror(errno));
422 return (-1);
423 }
424
425 if (dhcp_start_agent(timeout) != 0) {
426 lxi_err("Failed to start dhcpagent\n");
427 /* NOTREACHED */
428 }
429
430 dhcpreq = dhcp_ipc_alloc_request(DHCP_START, iface,
431 NULL, 0, DHCP_TYPE_NONE);
432 if (dhcpreq == NULL) {
433 lxi_warn("Unable to allocate memory "
434 "to start DHCP on %s\n", iface);
435 return (-1);
436 }
437
438 err = dhcp_ipc_make_request(dhcpreq, &dhcpreply, timeout);
439 if (err != 0) {
440 free(dhcpreq);
441 lxi_warn("Failed to start DHCP on %s: %s\n", iface,
442 dhcp_ipc_strerror(err));
443 return (-1);
444 }
445 err = dhcpreply->return_code;
446 if (err != 0) {
447 lxi_warn("Failed to start DHCP on %s: %s\n", iface,
448 dhcp_ipc_strerror(err));
449 goto done;
450 }
451
452 *first_ipv4_configured = B_TRUE;
453
454 done:
455 free(dhcpreq);
456 free(dhcpreply);
457 return (err);
458 }
459
460 /*
461 * Initialize an IPv6 link-local address on a given interface
462 */
463 static int
464 lxi_iface_ipv6_link_local(const char *iface)
465 {
466 struct lifreq lifr;
467 int s;
468
469 s = socket(AF_INET6, SOCK_DGRAM, 0);
470 if (s == -1) {
471 lxi_warn("socket error %d: bringing up %s: %s",
472 errno, iface, strerror(errno));
473 }
474
475 (void) strncpy(lifr.lifr_name, iface, sizeof (lifr.lifr_name));
476 if (ioctl(s, SIOCGLIFFLAGS, (caddr_t)&lifr) < 0) {
477 lxi_warn("SIOCGLIFFLAGS error %d: bringing up %s: %s",
478 errno, iface, strerror(errno));
479 return (-1);
480 }
481
482 lifr.lifr_flags |= IFF_UP;
483 if (ioctl(s, SIOCSLIFFLAGS, (caddr_t)&lifr) < 0) {
484 lxi_warn("SIOCSLIFFLAGS error %d: bringing up %s: %s",
485 errno, iface, strerror(errno));
486 return (-1);
487 }
488
489 (void) close(s);
490 return (0);
491 }
492
493 static int
494 lxi_iface_gateway(const char *iface, const char *dst, int dstpfx,
495 const char *gwaddr)
496 {
497 int idx, len, sockfd;
498 /* For lint-happy alignment, use a uint32_t array... */
499 uint32_t rtbuf[RTMBUFSZ / sizeof (uint32_t)];
500 struct rt_msghdr *rtm = (struct rt_msghdr *)rtbuf;
501 struct sockaddr_in *dst_sin = (struct sockaddr_in *)(rtm + 1);
502 struct sockaddr_in *gw_sin = (struct sockaddr_in *)(dst_sin + 1);
503 struct sockaddr_in *netmask_sin = (struct sockaddr_in *)(gw_sin + 1);
504
505 (void) bzero(rtm, RTMBUFSZ);
506 rtm->rtm_addrs = RTA_DST | RTA_GATEWAY | RTA_NETMASK;
507 rtm->rtm_flags = RTF_UP | RTF_STATIC | RTF_GATEWAY;
508 rtm->rtm_msglen = sizeof (rtbuf);
509 rtm->rtm_pid = getpid();
510 rtm->rtm_type = RTM_ADD;
511 rtm->rtm_version = RTM_VERSION;
512
513
514 /*
515 * The destination and netmask components have already been zeroed,
516 * which represents the default gateway. If we were passed a more
517 * specific destination network, use that instead.
518 */
519 dst_sin->sin_family = AF_INET;
520 netmask_sin->sin_family = AF_INET;
521 if (dst != NULL) {
522 struct sockaddr *mask = (struct sockaddr *)netmask_sin;
523
524 if ((inet_pton(AF_INET, dst, &(dst_sin->sin_addr))) != 1 ||
525 plen2mask(dstpfx, AF_INET, mask) != 0) {
526 lxi_warn("bad destination network %s/%d: %s", dst,
527 dstpfx, strerror(errno));
528 return (-1);
529 }
530 }
531
532 if ((inet_pton(AF_INET, gwaddr, &(gw_sin->sin_addr))) != 1) {
533 lxi_warn("bad gateway %s: %s", gwaddr, strerror(errno));
534 return (-1);
535 }
536
537 if (iface != NULL) {
538 if ((idx = if_nametoindex(iface)) == 0) {
539 lxi_warn("unable to get interface index for %s: %s\n",
540 iface, strerror(errno));
541 return (-1);
542 }
543 rtm->rtm_index = idx;
544 }
545
546 if ((sockfd = socket(PF_ROUTE, SOCK_RAW, AF_INET)) < 0) {
547 lxi_warn("socket(PF_ROUTE): %s\n", strerror(errno));
548 return (-1);
549 }
550
551 if ((len = write(sockfd, rtbuf, rtm->rtm_msglen)) < 0) {
552 lxi_warn("could not write rtmsg: %s", strerror(errno));
553 (void) close(sockfd);
554 return (-1);
555 } else if (len < rtm->rtm_msglen) {
556 lxi_warn("write() rtmsg incomplete");
557 (void) close(sockfd);
558 return (-1);
559 }
560
561 (void) close(sockfd);
562 return (0);
563 }
564
565 static void
566 lxi_net_loopback()
567 {
568 const char *iface = "lo0";
569 boolean_t first_ipv4_configured = B_FALSE;
570
571 lxi_net_plumb(iface);
572 (void) lxi_iface_ip(iface, "127.0.0.1/8", &first_ipv4_configured);
573 (void) lxi_iface_ipv6_link_local(iface);
574 }
575
576 static void
577 lxi_net_setup(zone_dochandle_t handle)
578 {
579 struct zone_nwiftab lookup;
580 boolean_t do_addrconf = B_FALSE;
581
582 if (zonecfg_setnwifent(handle) != Z_OK)
583 return;
584 while (zonecfg_getnwifent(handle, &lookup) == Z_OK) {
585 const char *iface = lookup.zone_nwif_physical;
586 struct zone_res_attrtab *attrs = lookup.zone_nwif_attrp;
587 const char *ipaddrs, *primary, *gateway;
588 char ipaddrs_copy[MAXNAMELEN], /* cidraddr[BUFSIZ], */
589 *ipaddr, *tmp, *lasts;
590 boolean_t first_ipv4_configured = B_FALSE;
591 boolean_t *ficp = &first_ipv4_configured;
592 boolean_t no_zonecfg;
593
594 /*
595 * Regardless of whether we're configured in zonecfg(1M), or
596 * configured by other means, make sure we plumb every
597 * physical=<foo> for IPv4 and IPv6.
598 */
599 lxi_net_plumb(iface);
600
601 if (zone_find_attr(attrs, "ips", &ipaddrs) != 0 /* &&
602 lxi_get_old_ip(attrs, &ipaddrs, cidraddr, BUFSIZ) != 0*/) {
603 /*
604 * Do not panic. This interface has no in-zonecfg(1M)
605 * configuration. We keep a warning around for now.
606 */
607 lxi_warn("Could not find zonecfg(1M) network "
608 "configuration for the %s interface", iface);
609 no_zonecfg = B_TRUE;
610 } else {
611 no_zonecfg = B_FALSE;
612 }
613
614 if (lxi_iface_ipv6_link_local(iface) != 0) {
615 lxi_warn("unable to bring up link-local address on "
616 "interface %s", iface);
617 }
618
619 /*
620 * Every thing else below only happens if we have zonecfg(1M)
621 * network configuration.
622 */
623 if (no_zonecfg)
624 continue;
625
626 /*
627 * If we're going to be doing DHCP, we have to do it first
628 * since dhcpagent doesn't like to operate on non-zero logical
629 * interfaces.
630 */
631 if (strstr(ipaddrs, "dhcp") != NULL &&
632 lxi_iface_dhcp(iface, ficp) != 0) {
633 lxi_warn("Failed to start DHCP on %s\n", iface);
634 }
635
636 /*
637 * Copy the ipaddrs string, since strtok_r will write NUL
638 * characters into it.
639 */
640 (void) strlcpy(ipaddrs_copy, ipaddrs, MAXNAMELEN);
641 tmp = ipaddrs_copy;
642
643 /*
644 * Iterate over each IP and then set it up on the interface.
645 */
646 while ((ipaddr = strtok_r(tmp, ",", &lasts)) != NULL) {
647 tmp = NULL;
648 if (strcmp(ipaddr, "addrconf") == 0) {
649 do_addrconf = B_TRUE;
650 } else if (strcmp(ipaddr, "dhcp") == 0) {
651 continue;
652 } else if (lxi_iface_ip(iface, ipaddr, ficp) < 0) {
653 lxi_warn("Unable to add new IP address (%s) "
654 "to interface %s", ipaddr, iface);
655 }
656 }
657
658 if (zone_find_attr(attrs, "primary", &primary) == 0 &&
659 strncmp(primary, "true", MAXNAMELEN) == 0 &&
660 zone_find_attr(attrs, "gateway", &gateway) == 0) {
661 if (lxi_iface_gateway(iface, NULL, 0, gateway) != 0) {
662 lxi_err("default route on %s -> %s failed",
663 iface, gateway);
664 }
665 }
666 }
667
668 if (do_addrconf) {
669 lxi_net_ndpd_start();
670 }
671
672 (void) zonecfg_endnwifent(handle);
673 }
674
675 static void
676 lxi_net_static_route(const char *line)
677 {
678 /*
679 * Each static route line is a string of the form:
680 *
681 * "10.77.77.2|10.1.1.0/24|false"
682 *
683 * i.e. gateway address, destination network, and whether this is
684 * a "link local" route or a next hop route.
685 */
686 custr_t *cu = NULL;
687 char *gw = NULL, *dst = NULL;
688 int pfx = -1;
689 int i;
690
691 if (custr_alloc(&cu) != 0) {
692 lxi_err("custr_alloc failure");
693 }
694
695 for (i = 0; line[i] != '\0'; i++) {
696 if (gw == NULL) {
697 if (line[i] == '|') {
698 if ((gw = strdup(custr_cstr(cu))) == NULL) {
699 lxi_err("strdup failure");
700 }
701 custr_reset(cu);
702 } else {
703 if (custr_appendc(cu, line[i]) != 0) {
704 lxi_err("custr_appendc failure");
705 }
706 }
707 continue;
708 }
709
710 if (dst == NULL) {
711 if (line[i] == '/') {
712 if ((dst = strdup(custr_cstr(cu))) == NULL) {
713 lxi_err("strdup failure");
714 }
715 custr_reset(cu);
716 } else {
717 if (custr_appendc(cu, line[i]) != 0) {
718 lxi_err("custr_appendc failure");
719 }
720 }
721 continue;
722 }
723
724 if (pfx == -1) {
725 if (line[i] == '|') {
726 pfx = atoi(custr_cstr(cu));
727 custr_reset(cu);
728 } else {
729 if (custr_appendc(cu, line[i]) != 0) {
730 lxi_err("custr_appendc failure");
731 }
732 }
733 continue;
734 }
735
736 if (custr_appendc(cu, line[i]) != 0) {
737 lxi_err("custr_appendc failure");
738 }
739 }
740
741 /*
742 * We currently only support "next hop" routes, so ensure that
743 * "linklocal" is false:
744 */
745 if (strcmp(custr_cstr(cu), "false") != 0) {
746 lxi_warn("invalid static route: %s", line);
747 }
748
749 if (lxi_iface_gateway(NULL, dst, pfx, gw) != 0) {
750 lxi_err("failed to add route: %s/%d -> %s", dst, pfx, gw);
751 }
752
753 custr_free(cu);
754 free(gw);
755 free(dst);
756 }
757
758 static void
759 lxi_net_static_routes(void)
760 {
761 const char *cmd = "/native/usr/lib/brand/lx/routeinfo";
762 char *const argv[] = { "routeinfo", NULL };
763 char *const envp[] = { NULL };
764 int code;
765 struct stat st;
766 char errbuf[512];
767
768 if (stat(cmd, &st) != 0 || !S_ISREG(st.st_mode)) {
769 /*
770 * This binary is (potentially) shipped from another
771 * consolidation. If it does not exist, then the platform does
772 * not currently support static routes for LX-branded zones.
773 */
774 return;
775 }
776
777 /*
778 * Run the command, firing the callback for each line that it
779 * outputs. When this function returns, static route processing
780 * is complete.
781 */
782 if (run_command(cmd, argv, envp, errbuf, sizeof (errbuf),
783 lxi_net_static_route, &code) != 0 || code != 0) {
784 lxi_err("failed to run \"%s\": %s", cmd, errbuf);
785 }
786 }
787
788 static void
789 lxi_config_close(zone_dochandle_t handle)
790 {
791 zonecfg_fini_handle(handle);
792 }
793
794 static void
795 lxi_init_exec(char **argv)
796 {
797 const char *cmd = "/sbin/init";
798 char *const envp[] = { "container=zone", NULL };
799 int e;
800
801 argv[0] = "init";
802
803 /*
804 * systemd uses the 'container' env var to determine it is running
805 * inside a container. It only supports a few well-known types and
806 * treats anything else as 'other' but this is enough to make it
807 * behave better inside a zone. See 'detect_container' in systemd.
808 */
809 (void) execve(cmd, argv, envp);
810 e = errno;
811
812 /*
813 * Because stdout was closed prior to exec, it must be opened again in
814 * the face of failure to log the error.
815 */
816 lxi_log_open();
817 lxi_err("execve(%s) failed: %s", cmd, strerror(e));
818 }
819
820 /*ARGSUSED*/
821 int
822 main(int argc, char *argv[])
823 {
824 zone_dochandle_t handle;
825
826 lxi_log_open();
827
828 lxi_net_ipmgmtd_start();
829 lxi_net_ipadm_open();
830
831 handle = lxi_config_open();
832 lxi_net_loopback();
833 lxi_net_setup(handle);
834 lxi_config_close(handle);
835
836 lxi_net_static_routes();
837
838 lxi_net_ipadm_close();
839
840 lxi_log_close();
841
842 lxi_init_exec(argv);
843
844 /* NOTREACHED */
845 return (0);
846 }