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 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 #if 0 /* XXX KEBE SAYS NOT YET */
191 static int
192 zone_find_attr(struct zone_res_attrtab *attrs, const char *name,
193 const char **result)
194 {
195 while (attrs != NULL) {
196 if (strncmp(attrs->zone_res_attr_name, name,
197 MAXNAMELEN) == 0) {
198 *result = attrs->zone_res_attr_value;
199 return (0);
200 }
201 attrs = attrs->zone_res_attr_next;
202 }
203 return (-1);
204 }
205 #endif /* XXX KEBE SAYS NOT YET */
206
207 void
208 lxi_svc_start(char *name, char *path, char *fmri)
209 {
210 pid_t pid;
211 int status;
212 char *const argv[] = {
213 name,
214 NULL
215 };
216 char *const envp[] = {
217 fmri,
218 NULL
219 };
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 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 /* EMPTY */;
247 }
248
249 if (WIFEXITED(status)) {
250 if (WEXITSTATUS(status) != 0) {
251 lxi_err("%s[%d] exited: %d", name,
252 (int)pid, WEXITSTATUS(status));
253 }
254 } else if (WIFSIGNALED(status)) {
255 lxi_err("%s[%d] died on signal: %d", name,
256 (int)pid, WTERMSIG(status));
257 } else {
258 lxi_err("%s[%d] failed in unknown way", name,
259 (int)pid);
260 }
261 }
262
263 void
264 lxi_net_ipmgmtd_start()
265 {
266 lxi_svc_start("ipmgmtd", IPMGMTD_PATH,
267 "SMF_FMRI=svc:/network/ip-interface-management:default");
268 }
269
270 void
271 lxi_net_ndpd_start()
272 {
273 lxi_svc_start("in.ndpd", IN_NDPD_PATH,
274 "SMF_FMRI=svc:/network/routing/ndp:default");
275 }
276
277
278 static void
279 lxi_net_ipadm_open()
280 {
281 ipadm_status_t status;
282
283 if ((status = ipadm_open(&iph, IPH_LEGACY)) != IPADM_SUCCESS) {
284 lxi_err("Error opening ipadm handle: %s",
285 ipadm_status2str(status));
286 }
287 }
288
289 static void
290 lxi_net_ipadm_close()
291 {
292 ipadm_close(iph);
293 }
294
295 void
296 lxi_net_plumb(const char *iface)
297 {
298 ipadm_status_t status;
299 char ifbuf[LIFNAMSIZ];
300
301 /* ipadm_create_if stomps on ifbuf, so create a copy: */
302 (void) strncpy(ifbuf, iface, sizeof (ifbuf));
303
304 if ((status = ipadm_create_if(iph, ifbuf, AF_INET, IPADM_OPT_ACTIVE))
305 != IPADM_SUCCESS) {
306 lxi_err("ipadm_create_if error %d: %s/v4: %s",
307 status, iface, ipadm_status2str(status));
308 }
309
310 if ((status = ipadm_create_if(iph, ifbuf, AF_INET6, IPADM_OPT_ACTIVE))
311 != IPADM_SUCCESS) {
312 lxi_err("ipadm_create_if error %d: %s/v6: %s",
313 status, iface, ipadm_status2str(status));
314 }
315 }
316
317 static int
318 lxi_getif(int af, char *iface, int len, boolean_t first_ipv4_configured)
319 {
320 struct lifreq lifr;
321 int s = socket(af, SOCK_DGRAM, 0);
322 if (s < 0) {
323 lxi_warn("socket error %d: bringing up %s: %s",
324 errno, iface, strerror(errno));
325 return (-1);
326 }
327
328 /*
329 * We need a new logical interface for every IP address we add, except
330 * for the very first IPv4 address.
331 */
332 if (af == AF_INET6 || first_ipv4_configured) {
333 (void) strncpy(lifr.lifr_name, iface, sizeof (lifr.lifr_name));
334 (void) memset(&lifr.lifr_addr, 0, sizeof (lifr.lifr_addr));
335 if (ioctl(s, SIOCLIFADDIF, (caddr_t)&lifr) < 0) {
336 if (close(s) != 0) {
337 lxi_warn("failed to close socket: %s\n",
338 strerror(errno));
339 }
340 return (-1);
341 }
342 (void) strncpy(iface, lifr.lifr_name, len);
343 }
344
345 if (close(s) != 0) {
346 lxi_warn("failed to close socket: %s\n",
347 strerror(errno));
348 }
349 return (0);
350 }
351
352 static int
353 lxi_iface_ip(const char *origiface, const char *addr,
354 boolean_t *first_ipv4_configured)
355 {
356 static int addrnum = 0;
357 ipadm_status_t status;
358 ipadm_addrobj_t ipaddr = NULL;
359 char iface[LIFNAMSIZ];
360 char aobjname[IPADM_AOBJSIZ];
361 int af, err = 0;
362
363 (void) strncpy(iface, origiface, sizeof (iface));
364
365 af = strstr(addr, ":") == NULL ? AF_INET : AF_INET6;
366 if (lxi_getif(af, iface, sizeof (iface), *first_ipv4_configured) != 0) {
367 lxi_warn("failed to create new logical interface "
368 "on %s: %s", origiface, strerror(errno));
369 return (-1);
370 }
371
372 (void) snprintf(aobjname, IPADM_AOBJSIZ, "%s/addr%d", iface,
373 addrnum++);
374
375 if ((status = ipadm_create_addrobj(IPADM_ADDR_STATIC, aobjname,
376 &ipaddr)) != IPADM_SUCCESS) {
377 lxi_warn("ipadm_create_addrobj error %d: addr %s, "
378 "interface %s: %s\n", status, addr, iface,
379 ipadm_status2str(status));
380 return (-2);
381 }
382
383 if ((status = ipadm_set_addr(ipaddr, addr, AF_UNSPEC))
384 != IPADM_SUCCESS) {
385 lxi_warn("ipadm_set_addr error %d: addr %s"
386 ", interface %s: %s\n", status, addr,
387 iface, ipadm_status2str(status));
388 err = -3;
389 goto done;
390 }
391
392 if ((status = ipadm_create_addr(iph, ipaddr,
393 IPADM_OPT_ACTIVE | IPADM_OPT_UP)) != IPADM_SUCCESS) {
394 lxi_warn("ipadm_create_addr error for %s: %s\n", iface,
395 ipadm_status2str(status));
396 err = -4;
397 goto done;
398 }
399
400 if (af == AF_INET) {
401 *first_ipv4_configured = B_TRUE;
402 }
403
404 done:
405 ipadm_destroy_addrobj(ipaddr);
406 return (err);
407 }
408
409 #if 0 /* XXX KEBE SAYS NOT YET */
410 static int
411 lxi_iface_dhcp(const char *origiface, boolean_t *first_ipv4_configured)
412 {
413 dhcp_ipc_request_t *dhcpreq = NULL;
414 dhcp_ipc_reply_t *dhcpreply = NULL;
415 int err = 0, timeout = 5;
416 char iface[LIFNAMSIZ];
417
418 (void) strncpy(iface, origiface, sizeof (iface));
419
420 if (lxi_getif(AF_INET, iface, sizeof (iface), *first_ipv4_configured)
421 != 0) {
422 lxi_warn("failed to create new logical interface "
423 "on %s: %s", origiface, strerror(errno));
424 return (-1);
425 }
426
427 if (dhcp_start_agent(timeout) != 0) {
428 lxi_err("Failed to start dhcpagent\n");
429 /* NOTREACHED */
430 }
431
432 dhcpreq = dhcp_ipc_alloc_request(DHCP_START, iface,
433 NULL, 0, DHCP_TYPE_NONE);
434 if (dhcpreq == NULL) {
435 lxi_warn("Unable to allocate memory "
436 "to start DHCP on %s\n", iface);
437 return (-1);
438 }
439
440 err = dhcp_ipc_make_request(dhcpreq, &dhcpreply, timeout);
441 if (err != 0) {
442 free(dhcpreq);
443 lxi_warn("Failed to start DHCP on %s: %s\n", iface,
444 dhcp_ipc_strerror(err));
445 return (-1);
446 }
447 err = dhcpreply->return_code;
448 if (err != 0) {
449 lxi_warn("Failed to start DHCP on %s: %s\n", iface,
450 dhcp_ipc_strerror(err));
451 goto done;
452 }
453
454 *first_ipv4_configured = B_TRUE;
455
456 done:
457 free(dhcpreq);
458 free(dhcpreply);
459 return (err);
460 }
461 #endif /* XXX KEBE SAYS NOT YET */
462
463 /*
464 * Initialize an IPv6 link-local address on a given interface
465 */
466 static int
467 lxi_iface_ipv6_link_local(const char *iface)
468 {
469 struct lifreq lifr;
470 int s;
471
472 s = socket(AF_INET6, SOCK_DGRAM, 0);
473 if (s == -1) {
474 lxi_warn("socket error %d: bringing up %s: %s",
475 errno, iface, strerror(errno));
476 }
477
478 (void) strncpy(lifr.lifr_name, iface, sizeof (lifr.lifr_name));
479 if (ioctl(s, SIOCGLIFFLAGS, (caddr_t)&lifr) < 0) {
480 lxi_warn("SIOCGLIFFLAGS error %d: bringing up %s: %s",
481 errno, iface, strerror(errno));
482 return (-1);
483 }
484
485 lifr.lifr_flags |= IFF_UP;
486 if (ioctl(s, SIOCSLIFFLAGS, (caddr_t)&lifr) < 0) {
487 lxi_warn("SIOCSLIFFLAGS error %d: bringing up %s: %s",
488 errno, iface, strerror(errno));
489 return (-1);
490 }
491
492 (void) close(s);
493 return (0);
494 }
495
496 static int
497 lxi_iface_gateway(const char *iface, const char *dst, int dstpfx,
498 const char *gwaddr)
499 {
500 int idx, len, sockfd;
501 char rtbuf[RTMBUFSZ];
502 struct rt_msghdr *rtm = (struct rt_msghdr *)rtbuf;
503 struct sockaddr_in *dst_sin = (struct sockaddr_in *)
504 (rtbuf + sizeof (struct rt_msghdr));
505 struct sockaddr_in *gw_sin = (struct sockaddr_in *)(dst_sin + 1);
506 struct sockaddr_in *netmask_sin = (struct sockaddr_in *)(gw_sin + 1);
507
508 (void) bzero(rtm, RTMBUFSZ);
509 rtm->rtm_addrs = RTA_DST | RTA_GATEWAY | RTA_NETMASK;
510 rtm->rtm_flags = RTF_UP | RTF_STATIC | RTF_GATEWAY;
511 rtm->rtm_msglen = sizeof (rtbuf);
512 rtm->rtm_pid = getpid();
513 rtm->rtm_type = RTM_ADD;
514 rtm->rtm_version = RTM_VERSION;
515
516
517 /*
518 * The destination and netmask components have already been zeroed,
519 * which represents the default gateway. If we were passed a more
520 * specific destination network, use that instead.
521 */
522 dst_sin->sin_family = AF_INET;
523 netmask_sin->sin_family = AF_INET;
524 if (dst != NULL) {
525 struct sockaddr *mask = (struct sockaddr *)netmask_sin;
526
527 if ((inet_pton(AF_INET, dst, &(dst_sin->sin_addr))) != 1 ||
528 plen2mask(dstpfx, AF_INET, mask) != 0) {
529 lxi_warn("bad destination network %s/%d: %s", dst,
530 dstpfx, strerror(errno));
531 return (-1);
532 }
533 }
534
535 if ((inet_pton(AF_INET, gwaddr, &(gw_sin->sin_addr))) != 1) {
536 lxi_warn("bad gateway %s: %s", gwaddr, strerror(errno));
537 return (-1);
538 }
539
540 if (iface != NULL) {
541 if ((idx = if_nametoindex(iface)) == 0) {
542 lxi_warn("unable to get interface index for %s: %s\n",
543 iface, strerror(errno));
544 return (-1);
545 }
546 rtm->rtm_index = idx;
547 }
548
549 if ((sockfd = socket(PF_ROUTE, SOCK_RAW, AF_INET)) < 0) {
550 lxi_warn("socket(PF_ROUTE): %s\n", strerror(errno));
551 return (-1);
552 }
553
554 if ((len = write(sockfd, rtbuf, rtm->rtm_msglen)) < 0) {
555 lxi_warn("could not write rtmsg: %s", strerror(errno));
556 close(sockfd);
557 return (-1);
558 } else if (len < rtm->rtm_msglen) {
559 lxi_warn("write() rtmsg incomplete");
560 close(sockfd);
561 return (-1);
562 }
563
564 close(sockfd);
565 return (0);
566 }
567
568 static void
569 lxi_net_loopback()
570 {
571 const char *iface = "lo0";
572 boolean_t first_ipv4_configured = B_FALSE;
573
574 lxi_net_plumb(iface);
575 (void) lxi_iface_ip(iface, "127.0.0.1/8", &first_ipv4_configured);
576 (void) lxi_iface_ipv6_link_local(iface);
577 }
578
579
580
581 #if 0 /* XXX KEBE SAYS NOT YET */
582 /*
583 * This function is used when the "ips" property doesn't exist in a zone's
584 * configuration. It may be an older configuration, so we should search for
585 * "ip" and "netmask" and convert them into the new format.
586 */
587 static int
588 lxi_get_old_ip(struct zone_res_attrtab *attrs, const char **ipaddrs,
589 char *cidraddr, int len)
590 {
591
592 const char *netmask;
593 int prefixlen;
594 struct sockaddr_in mask_sin;
595
596 lxi_warn("Could not find \"ips\" property for zone. Looking "
597 "for older \"ip\" and \"netmask\" properties, instead.");
598
599 if (zone_find_attr(attrs, "ip", ipaddrs) != 0) {
600 return (-1);
601 }
602
603 if (strcmp(*ipaddrs, "dhcp") == 0) {
604 return (0);
605 }
606
607 if (zone_find_attr(attrs, "netmask", &netmask) != 0) {
608 lxi_err("could not find netmask for interface");
609 /* NOTREACHED */
610 }
611
612 /* Convert the netmask to a number */
613 mask_sin.sin_family = AF_INET;
614 if (inet_pton(AF_INET, netmask, &mask_sin.sin_addr) != 1) {
615 lxi_err("invalid netmask address: %s\n",
616 strerror(errno));
617 /* NOTREACHED */
618 }
619 prefixlen = mask2plen((struct sockaddr *)&mask_sin);
620
621 /*
622 * Write out the IP address in the new format and use
623 * that instead
624 */
625 (void) snprintf(cidraddr, len, "%s/%d", *ipaddrs, prefixlen);
626
627 *ipaddrs = cidraddr;
628 return (0);
629 }
630 #endif /* XXX KEBE SAYS NOT YET */
631
632 static void
633 lxi_net_setup(zone_dochandle_t handle)
634 {
635 struct zone_nwiftab lookup;
636 boolean_t do_addrconf = B_FALSE;
637
638 if (zonecfg_setnwifent(handle) != Z_OK)
639 return;
640 while (zonecfg_getnwifent(handle, &lookup) == Z_OK) {
641 const char *iface = lookup.zone_nwif_physical;
642 #if 0 /* XXX KEBE SAYS NOT YET */
643 struct zone_res_attrtab *attrs = lookup.zone_nwif_attrp;
644 const char *ipaddrs, *primary, *gateway;
645 char ipaddrs_copy[MAXNAMELEN], cidraddr[BUFSIZ],
646 *ipaddr, *tmp, *lasts;
647 boolean_t first_ipv4_configured = B_FALSE;
648 boolean_t *ficp = &first_ipv4_configured;
649 #endif /* XXX KEBE */
650
651 lxi_net_plumb(iface);
652
653 /* XXX KEBE SAYS this bit was shuffled around. */
654 if (lxi_iface_ipv6_link_local(iface) != 0) {
655 lxi_warn("unable to bring up link-local address on "
656 "interface %s", iface);
657 } else {
658 /* XXX KEBE SAYS this bit is new. */
659 do_addrconf = B_TRUE;
660 }
661
662 #if 0 /* XXX KEBE SAYS NOT YET */
663 if (zone_find_attr(attrs, "ips", &ipaddrs) != 0 &&
664 lxi_get_old_ip(attrs, &ipaddrs, cidraddr, BUFSIZ) != 0) {
665 lxi_warn("Could not find a valid network configuration "
666 "for the %s interface", iface);
667 continue;
668 }
669
670 /*
671 * If we're going to be doing DHCP, we have to do it first since
672 * dhcpagent doesn't like to operate on non-zero logical
673 * interfaces.
674 */
675 if (strstr(ipaddrs, "dhcp") != NULL &&
676 lxi_iface_dhcp(iface, ficp) != 0) {
677 lxi_warn("Failed to start DHCP on %s\n", iface);
678 }
679
680 /*
681 * Copy the ipaddrs string, since strtok_r will write NUL
682 * characters into it.
683 */
684 (void) strlcpy(ipaddrs_copy, ipaddrs, MAXNAMELEN);
685 tmp = ipaddrs_copy;
686
687 /*
688 * Iterate over each IP and then set it up on the interface.
689 */
690 while ((ipaddr = strtok_r(tmp, ",", &lasts)) != NULL) {
691 tmp = NULL;
692 if (strcmp(ipaddr, "addrconf") == 0) {
693 do_addrconf = B_TRUE;
694 } else if (strcmp(ipaddr, "dhcp") == 0) {
695 continue;
696 } else if (lxi_iface_ip(iface, ipaddr, ficp) < 0) {
697 lxi_warn("Unable to add new IP address (%s) "
698 "to interface %s", ipaddr, iface);
699 }
700 }
701
702 if (zone_find_attr(attrs, "primary", &primary) == 0 &&
703 strncmp(primary, "true", MAXNAMELEN) == 0 &&
704 zone_find_attr(attrs, "gateway", &gateway) == 0) {
705 lxi_iface_gateway(iface, NULL, 0, gateway);
706 }
707 #endif /* XXX KEBE */
708 }
709
710 if (do_addrconf) {
711 lxi_net_ndpd_start();
712 }
713
714 (void) zonecfg_endnwifent(handle);
715 }
716
717 static void
718 lxi_net_static_route(const char *line)
719 {
720 /*
721 * Each static route line is a string of the form:
722 *
723 * "10.77.77.2|10.1.1.0/24|false"
724 *
725 * i.e. gateway address, destination network, and whether this is
726 * a "link local" route or a next hop route.
727 */
728 custr_t *cu = NULL;
729 char *gw = NULL, *dst = NULL;
730 int pfx = -1;
731 int i;
732
733 if (custr_alloc(&cu) != 0) {
734 lxi_err("custr_alloc failure");
735 }
736
737 for (i = 0; line[i] != '\0'; i++) {
738 if (gw == NULL) {
739 if (line[i] == '|') {
740 if ((gw = strdup(custr_cstr(cu))) == NULL) {
741 lxi_err("strdup failure");
742 }
743 custr_reset(cu);
744 } else {
745 if (custr_appendc(cu, line[i]) != 0) {
746 lxi_err("custr_appendc failure");
747 }
748 }
749 continue;
750 }
751
752 if (dst == NULL) {
753 if (line[i] == '/') {
754 if ((dst = strdup(custr_cstr(cu))) == NULL) {
755 lxi_err("strdup failure");
756 }
757 custr_reset(cu);
758 } else {
759 if (custr_appendc(cu, line[i]) != 0) {
760 lxi_err("custr_appendc failure");
761 }
762 }
763 continue;
764 }
765
766 if (pfx == -1) {
767 if (line[i] == '|') {
768 pfx = atoi(custr_cstr(cu));
769 custr_reset(cu);
770 } else {
771 if (custr_appendc(cu, line[i]) != 0) {
772 lxi_err("custr_appendc failure");
773 }
774 }
775 continue;
776 }
777
778 if (custr_appendc(cu, line[i]) != 0) {
779 lxi_err("custr_appendc failure");
780 }
781 }
782
783 /*
784 * We currently only support "next hop" routes, so ensure that
785 * "linklocal" is false:
786 */
787 if (strcmp(custr_cstr(cu), "false") != 0) {
788 lxi_warn("invalid static route: %s", line);
789 }
790
791 if (lxi_iface_gateway(NULL, dst, pfx, gw) != 0) {
792 lxi_err("failed to add route: %s/%d -> %s", dst, pfx, gw);
793 }
794
795 custr_free(cu);
796 free(gw);
797 free(dst);
798 }
799
800 static void
801 lxi_net_static_routes(void)
802 {
803 const char *cmd = "/native/usr/lib/brand/lx/routeinfo";
804 char *const argv[] = { "routeinfo", NULL };
805 char *const envp[] = { NULL };
806 int code;
807 struct stat st;
808 char errbuf[512];
809
810 if (stat(cmd, &st) != 0 || !S_ISREG(st.st_mode)) {
811 /*
812 * This binary is (potentially) shipped from another
813 * consolidation. If it does not exist, then the platform does
814 * not currently support static routes for LX-branded zones.
815 */
816 return;
817 }
818
819 /*
820 * Run the command, firing the callback for each line that it
821 * outputs. When this function returns, static route processing
822 * is complete.
823 */
824 if (run_command(cmd, argv, envp, errbuf, sizeof (errbuf),
825 lxi_net_static_route, &code) != 0 || code != 0) {
826 lxi_err("failed to run \"%s\": %s", cmd, errbuf);
827 }
828 }
829
830 static void
831 lxi_config_close(zone_dochandle_t handle)
832 {
833 zonecfg_fini_handle(handle);
834 }
835
836 static void
837 lxi_init_exec(char **argv)
838 {
839 const char *cmd = "/sbin/init";
840 char *const envp[] = { "container=zone", NULL };
841 int e;
842
843 argv[0] = "init";
844
845 /*
846 * systemd uses the 'container' env var to determine it is running
847 * inside a container. It only supports a few well-known types and
848 * treats anything else as 'other' but this is enough to make it
849 * behave better inside a zone. See 'detect_container' in systemd.
850 */
851 execve(cmd, argv, envp);
852 e = errno;
853
854 /*
855 * Because stdout was closed prior to exec, it must be opened again in
856 * the face of failure to log the error.
857 */
858 lxi_log_open();
859 lxi_err("execve(%s) failed: %s", cmd, strerror(e));
860 }
861
862 /*ARGSUSED*/
863 int
864 main(int argc, char *argv[])
865 {
866 zone_dochandle_t handle;
867
868 lxi_log_open();
869
870 lxi_net_ipmgmtd_start();
871 lxi_net_ipadm_open();
872
873 handle = lxi_config_open();
874 lxi_net_loopback();
875 lxi_net_setup(handle);
876 lxi_config_close(handle);
877
878 lxi_net_static_routes();
879
880 lxi_net_ipadm_close();
881
882 lxi_log_close();
883
884 lxi_init_exec(argv);
885
886 /* NOTREACHED */
887 return (0);
888 }