2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2019 Alexander V. Chernikov
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #ifndef _NET_ROUTING_RTSOCK_COMMON_H_
31 #define _NET_ROUTING_RTSOCK_COMMON_H_
42 #include <sys/types.h>
44 #include <sys/param.h>
45 #include <sys/socket.h>
46 #include <sys/ioctl.h>
48 #include <sys/linker.h>
50 #include <net/if_dl.h>
51 #include <net/route.h>
53 #include <arpa/inet.h>
54 #include <net/ethernet.h>
56 #include <netinet/in.h>
57 #include <netinet6/in6_var.h>
58 #include <netinet6/nd6.h>
67 #include "freebsd_test_suite/macros.h"
69 #include "rtsock_print.h"
72 void rtsock_update_rtm_len(struct rt_msghdr *rtm);
73 void rtsock_validate_message(char *buffer, ssize_t len);
74 void rtsock_add_rtm_sa(struct rt_msghdr *rtm, int addr_type, struct sockaddr *sa);
76 void file_append_line(char *fname, char *text);
78 static int _rtm_seq = 42;
82 * Checks if the interface cloner module is present for @name.
85 _check_cloner(char *name)
87 struct if_clonereq ifcr;
93 s = socket(AF_LOCAL, SOCK_DGRAM, 0);
95 err(1, "socket(AF_LOCAL,SOCK_DGRAM)");
97 memset(&ifcr, 0, sizeof(ifcr));
99 if (ioctl(s, SIOCIFGCLONERS, &ifcr) < 0)
100 err(1, "SIOCIFGCLONERS for count");
102 buf = malloc(ifcr.ifcr_total * IFNAMSIZ);
104 err(1, "unable to allocate cloner name buffer");
106 ifcr.ifcr_count = ifcr.ifcr_total;
107 ifcr.ifcr_buffer = buf;
109 if (ioctl(s, SIOCIFGCLONERS, &ifcr) < 0)
110 err(1, "SIOCIFGCLONERS for names");
113 * In case some disappeared in the mean time, clamp it down.
115 if (ifcr.ifcr_count > ifcr.ifcr_total)
116 ifcr.ifcr_count = ifcr.ifcr_total;
118 for (cp = buf, idx = 0; idx < ifcr.ifcr_count; idx++, cp += IFNAMSIZ) {
119 if (!strcmp(cp, name)) {
132 iface_create(char *ifname_orig)
136 char prefix[IFNAMSIZ], ifname[IFNAMSIZ], *result;
139 for (src = ifname_orig, dst = prefix; *src && isalpha(*src); src++)
143 memset(&ifr, 0, sizeof(struct ifreq));
145 s = socket(AF_LOCAL, SOCK_DGRAM, 0);
146 strlcpy(ifr.ifr_name, ifname_orig, sizeof(ifr.ifr_name));
148 RLOG("creating iface %s %s", prefix, ifr.ifr_name);
149 if (ioctl(s, SIOCIFCREATE2, &ifr) < 0)
150 err(1, "SIOCIFCREATE2");
152 strlcpy(ifname, ifr.ifr_name, IFNAMSIZ);
153 RLOG("created interface %s", ifname);
155 result = strdup(ifname);
157 file_append_line(IFACES_FNAME, ifname);
158 if (strstr(ifname, "epair") == ifname) {
159 /* call returned epairXXXa, need to add epairXXXb */
160 ifname[strlen(ifname) - 1] = 'b';
161 file_append_line(IFACES_FNAME, ifname);
168 iface_destroy(char *ifname)
173 s = socket(AF_LOCAL, SOCK_DGRAM, 0);
174 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
176 RLOG("destroying interface %s", ifname);
177 if (ioctl(s, SIOCIFDESTROY, &ifr) < 0)
184 * Open tunneling device such as tuntap and returns fd.
187 iface_open(char *ifname)
191 snprintf(path, sizeof(path), "/dev/%s", ifname);
193 RLOG("opening interface %s", ifname);
194 int fd = open(path, O_RDWR|O_EXCL);
196 RLOG_ERRNO("unable to open interface %s", ifname);
204 * Sets primary IPv4 addr.
205 * Returns 0 on success.
208 iface_setup_addr(char *ifname, char *addr, int plen)
213 if (strchr(addr, ':'))
217 RLOG("setting af_%s %s/%d on %s", af, addr, plen, ifname);
218 snprintf(cmd, sizeof(cmd), "/sbin/ifconfig %s %s %s/%d", ifname,
225 * Removes primary IPv4 prefix.
226 * Returns 0 on success.
229 iface_delete_addr(char *ifname, char *addr)
233 if (strchr(addr, ':')) {
234 RLOG("removing IPv6 %s from %s", addr, ifname);
235 snprintf(cmd, sizeof(cmd), "/sbin/ifconfig %s inet6 %s delete", ifname, addr);
237 RLOG("removing IPv4 %s from %s", addr, ifname);
238 snprintf(cmd, sizeof(cmd), "/sbin/ifconfig %s -alias %s", ifname, addr);
245 iface_turn_up(char *ifname)
250 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
251 RLOG_ERRNO("socket");
254 memset(&ifr, 0, sizeof(struct ifreq));
255 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
256 if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) {
257 RLOG_ERRNO("ioctl(SIOCGIFFLAGS)");
261 if ((ifr.ifr_flags & IFF_UP) == 0) {
262 ifr.ifr_flags |= IFF_UP;
263 if (ioctl(s, SIOCSIFFLAGS, (caddr_t)&ifr) < 0) {
264 RLOG_ERRNO("ioctl(SIOSGIFFLAGS)");
267 RLOG("turned interface %s up", ifname);
274 * Removes ND6_IFF_IFDISABLED from IPv6 interface flags.
275 * Returns 0 on success.
278 iface_enable_ipv6(char *ifname)
280 struct in6_ndireq nd;
283 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
286 memset(&nd, 0, sizeof(nd));
287 strlcpy(nd.ifname, ifname, sizeof(nd.ifname));
288 if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) {
289 RLOG_ERRNO("ioctl(SIOCGIFINFO_IN6)");
293 if ((nd.ndi.flags & ND6_IFF_IFDISABLED) != 0) {
294 nd.ndi.flags &= ~ND6_IFF_IFDISABLED;
295 if (ioctl(s, SIOCSIFINFO_IN6, (caddr_t)&nd) < 0) {
296 RLOG_ERRNO("ioctl(SIOCSIFINFO_IN6)");
299 RLOG("enabled IPv6 for %s", ifname);
306 file_append_line(char *fname, char *text)
310 f = fopen(fname, "a");
317 vnet_wait_interface(char *vnet_name, char *ifname)
319 char buf[512], cmd[512], *line, *token;
323 snprintf(cmd, sizeof(cmd), "/usr/sbin/jexec %s /sbin/ifconfig -l", vnet_name);
324 for (int i = 0; i < 50; i++) {
325 fp = popen(cmd, "r");
326 line = fgets(buf, sizeof(buf), fp);
329 line[strlen(line)-1] = '\0';
330 while ((token = strsep(&line, " ")) != NULL) {
331 if (strcmp(token, ifname) == 0)
343 vnet_switch(char *vnet_name, char **ifnames, int count)
345 char buf[512], cmd[512], *line;
349 RLOG("switching to vnet %s with interface(s) %s", vnet_name, ifnames[0]);
350 len = snprintf(cmd, sizeof(cmd),
351 "/usr/sbin/jail -i -c name=%s persist vnet", vnet_name);
352 for (int i = 0; i < count && len < sizeof(cmd); i++) {
353 len += snprintf(&cmd[len], sizeof(cmd) - len,
354 " vnet.interface=%s", ifnames[i]);
356 RLOG("jail cmd: \"%s\"\n", cmd);
358 fp = popen(cmd, "r");
360 atf_tc_fail("jail creation failed");
361 line = fgets(buf, sizeof(buf), fp);
363 atf_tc_fail("empty output from jail(8)");
364 jid = strtol(line, NULL, 10);
366 atf_tc_fail("invalid jail output: %s", line);
369 RLOG("created jail jid=%d", jid);
370 file_append_line(JAILS_FNAME, vnet_name);
372 /* Wait while interface appearsh inside vnet */
373 for (int i = 0; i < count; i++) {
374 if (vnet_wait_interface(vnet_name, ifnames[i]))
376 atf_tc_fail("unable to move interface %s to jail %s",
377 ifnames[i], vnet_name);
380 if (jail_attach(jid) == -1) {
381 RLOG_ERRNO("jail %s attach failed: ret=%d", vnet_name, errno);
382 atf_tc_fail("jail attach failed");
385 RLOG("attached to the jail");
389 vnet_switch_one(char *vnet_name, char *ifname)
394 vnet_switch(vnet_name, ifnames, 1);
398 #define SA_F_IGNORE_IFNAME 0x01
399 #define SA_F_IGNORE_IFTYPE 0x02
400 #define SA_F_IGNORE_MEMCMP 0x04
402 sa_equal_msg_flags(const struct sockaddr *a, const struct sockaddr *b, char *msg, size_t sz, int flags)
404 char a_s[64], b_s[64];
405 const struct sockaddr_in *a4, *b4;
406 const struct sockaddr_in6 *a6, *b6;
407 const struct sockaddr_dl *al, *bl;
410 snprintf(msg, sz, "first sa is NULL");
414 snprintf(msg, sz, "second sa is NULL");
418 if (a->sa_family != b->sa_family) {
419 snprintf(msg, sz, "family: %d vs %d", a->sa_family, b->sa_family);
422 if (a->sa_len != b->sa_len) {
423 snprintf(msg, sz, "len: %d vs %d", a->sa_len, b->sa_len);
427 switch (a->sa_family) {
429 a4 = (const struct sockaddr_in *)a;
430 b4 = (const struct sockaddr_in *)b;
431 if (a4->sin_addr.s_addr != b4->sin_addr.s_addr) {
432 inet_ntop(AF_INET, &a4->sin_addr, a_s, sizeof(a_s));
433 inet_ntop(AF_INET, &b4->sin_addr, b_s, sizeof(b_s));
434 snprintf(msg, sz, "addr diff: %s vs %s", a_s, b_s);
437 if (a4->sin_port != b4->sin_port) {
438 snprintf(msg, sz, "port diff: %d vs %d",
439 ntohs(a4->sin_port), ntohs(b4->sin_port));
442 const uint32_t *a32, *b32;
443 a32 = (const uint32_t *)a4->sin_zero;
444 b32 = (const uint32_t *)b4->sin_zero;
445 if ((*a32 != *b32) || (*(a32 + 1) != *(b32 + 1))) {
446 snprintf(msg, sz, "zero diff: 0x%08X%08X vs 0x%08X%08X",
447 ntohl(*a32), ntohl(*(a32 + 1)),
448 ntohl(*b32), ntohl(*(b32 + 1)));
453 a6 = (const struct sockaddr_in6 *)a;
454 b6 = (const struct sockaddr_in6 *)b;
455 if (!IN6_ARE_ADDR_EQUAL(&a6->sin6_addr, &b6->sin6_addr)) {
456 inet_ntop(AF_INET6, &a6->sin6_addr, a_s, sizeof(a_s));
457 inet_ntop(AF_INET6, &b6->sin6_addr, a_s, sizeof(a_s));
458 snprintf(msg, sz, "addr diff: %s vs %s", a_s, b_s);
461 if (a6->sin6_scope_id != b6->sin6_scope_id) {
462 snprintf(msg, sz, "scope diff: %u vs %u", a6->sin6_scope_id, b6->sin6_scope_id);
467 al = (const struct sockaddr_dl *)a;
468 bl = (const struct sockaddr_dl *)b;
470 if (al->sdl_index != bl->sdl_index) {
471 snprintf(msg, sz, "sdl_index diff: %u vs %u", al->sdl_index, bl->sdl_index);
475 if ((al->sdl_alen != bl->sdl_alen) || (memcmp(LLADDR(al), LLADDR(bl), al->sdl_alen) != 0)) {
476 char abuf[64], bbuf[64];
477 sa_print_hd(abuf, sizeof(abuf), LLADDR(al), al->sdl_alen);
478 sa_print_hd(bbuf, sizeof(bbuf), LLADDR(bl), bl->sdl_alen);
479 snprintf(msg, sz, "sdl_alen diff: {%s} (%d) vs {%s} (%d)",
480 abuf, al->sdl_alen, bbuf, bl->sdl_alen);
484 if (((flags & SA_F_IGNORE_IFTYPE) == 0) && (al->sdl_type != bl->sdl_type)) {
485 snprintf(msg, sz, "sdl_type diff: %u vs %u", al->sdl_type, bl->sdl_type);
489 if (((flags & SA_F_IGNORE_IFNAME) == 0) && ((al->sdl_nlen != bl->sdl_nlen) ||
490 (memcmp(al->sdl_data, bl->sdl_data, al->sdl_nlen) != 0))) {
491 char abuf[64], bbuf[64];
492 memcpy(abuf, al->sdl_data, al->sdl_nlen);
493 abuf[al->sdl_nlen] = '\0';
494 memcpy(bbuf, bl->sdl_data, bl->sdl_nlen);
495 abuf[bl->sdl_nlen] = '\0';
496 snprintf(msg, sz, "sdl_nlen diff: {%s} (%d) vs {%s} (%d)",
497 abuf, al->sdl_nlen, bbuf, bl->sdl_nlen);
501 if (flags & SA_F_IGNORE_MEMCMP)
506 if (memcmp(a, b, a->sa_len)) {
508 for (i = 0; i < a->sa_len; i++)
509 if (((const char *)a)[i] != ((const char *)b)[i])
515 snprintf(msg, sz, "overall memcmp() reports diff for af %d offset %d",
523 sa_equal_msg(const struct sockaddr *a, const struct sockaddr *b, char *msg, size_t sz)
526 return sa_equal_msg_flags(a, b, msg, sz, 0);
530 sa_fill_mask4(struct sockaddr_in *sin, int plen)
533 memset(sin, 0, sizeof(struct sockaddr_in));
534 sin->sin_family = AF_INET;
535 sin->sin_len = sizeof(struct sockaddr_in);
536 sin->sin_addr.s_addr = htonl(plen ? ~((1 << (32 - plen)) - 1) : 0);
540 sa_fill_mask6(struct sockaddr_in6 *sin6, uint8_t mask)
544 memset(sin6, 0, sizeof(struct sockaddr_in6));
545 sin6->sin6_family = AF_INET6;
546 sin6->sin6_len = sizeof(struct sockaddr_in6);
548 for (cp = (uint32_t *)&sin6->sin6_addr; mask >= 32; mask -= 32)
551 *cp = htonl(mask ? ~((1 << (32 - mask)) - 1) : 0);
554 /* 52:54:00:14:e3:10 */
555 #define ETHER_MAC_MAX_LENGTH 17
558 sa_convert_str_to_sa(const char *_addr, struct sockaddr *sa)
564 char *addr = strdup(_addr);
567 /* classify AF by str */
568 if (strchr(addr, ':')) {
572 for (k = addr; *k; k++)
577 if (delim_cnt == 5) {
578 k = strchr(addr, '%');
579 if (k != NULL && (k - addr) <= ETHER_MAC_MAX_LENGTH)
582 } else if (strchr(addr, '.'))
589 if ((delimiter = strchr(addr, '%')) != NULL) {
591 ifname = delimiter + 1;
592 ifindex = if_nametoindex(ifname);
594 RLOG("unable to find ifindex for '%s'", ifname);
596 RLOG("if %s mapped to %d", ifname, ifindex);
599 if (af == AF_INET6) {
600 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
601 memset(sin6, 0, sizeof(struct sockaddr_in6));
602 sin6->sin6_family = AF_INET6;
603 sin6->sin6_len = sizeof(struct sockaddr_in6);
604 sin6->sin6_scope_id = ifindex;
605 error = inet_pton(AF_INET6, addr, &sin6->sin6_addr);
607 RLOG_ERRNO("inet_ntop() failed: ret=%d", error);
610 } else if (af == AF_INET) {
611 struct sockaddr_in *sin = (struct sockaddr_in *)sa;
612 memset(sin, 0, sizeof(struct sockaddr_in));
613 sin->sin_family = AF_INET;
614 sin->sin_len = sizeof(struct sockaddr_in);
615 error = inet_pton(AF_INET, addr, &sin->sin_addr);
617 RLOG("inet_ntop() failed: ret=%d", error);
620 } else if (af == AF_LINK) {
621 struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa;
622 memset(sdl, 0, sizeof(struct sockaddr_dl));
623 sdl->sdl_family = AF_LINK;
624 sdl->sdl_len = sizeof(struct sockaddr_dl);
625 sdl->sdl_index = ifindex;
627 struct ether_addr *ea = (struct ether_addr *)LLADDR(sdl);
628 if (ether_aton_r(addr, ea) == NULL)
629 RLOG("ether_aton() failed");
639 rtsock_setup_socket()
642 int af = AF_UNSPEC; /* 0 to capture messages from all AFs */
643 fd = socket(PF_ROUTE, SOCK_RAW, af);
645 ATF_REQUIRE_MSG(fd != -1, "rtsock open failed: %s", strerror(errno));
647 /* Listen for our messages */
649 if (setsockopt(fd, SOL_SOCKET,SO_USELOOPBACK, &on, sizeof(on)) < 0)
650 RLOG_ERRNO("setsockopt failed");
656 rtsock_send_rtm(int fd, struct rt_msghdr *rtm)
661 rtsock_update_rtm_len(rtm);
663 len = write(fd, rtm, rtm->rtm_msglen);
665 RTSOCK_ATF_REQUIRE_MSG(rtm, len == rtm->rtm_msglen,
666 "rtsock write failed: want %d got %zd (%s)",
667 rtm->rtm_msglen, len, strerror(my_errno));
673 rtsock_read_rtm(int fd, char *buffer, size_t buflen)
677 int poll_delay = 5 * 1000; /* 5 seconds */
679 /* Check for the data available to read first */
680 memset(&pfd, 0, sizeof(pfd));
684 if (poll(&pfd, 1, poll_delay) == 0)
685 ATF_REQUIRE_MSG(1 == 0, "rtsock read timed out (%d seconds passed)",
688 len = read(fd, buffer, buflen);
689 int my_errno = errno;
690 ATF_REQUIRE_MSG(len > 0, "rtsock read failed: %s", strerror(my_errno));
692 rtsock_validate_message(buffer, len);
693 return ((struct rt_msghdr *)buffer);
697 rtsock_read_rtm_reply(int fd, char *buffer, size_t buflen, int seq)
699 struct rt_msghdr *rtm;
703 rtm = rtsock_read_rtm(fd, buffer, buflen);
704 if (rtm->rtm_pid == getpid() && rtm->rtm_seq == seq)
707 RLOG("--- MATCHED RTSOCK MESSAGE ---");
709 RLOG("--- SKIPPED RTSOCK MESSAGE ---");
710 rtsock_print_rtm(rtm);
719 rtsock_prepare_route_message_base(struct rt_msghdr *rtm, int cmd)
722 memset(rtm, 0, sizeof(struct rt_msghdr));
724 rtm->rtm_version = RTM_VERSION;
725 rtm->rtm_seq = _rtm_seq++;
729 rtsock_prepare_route_message(struct rt_msghdr *rtm, int cmd, struct sockaddr *dst,
730 struct sockaddr *mask, struct sockaddr *gw)
733 rtsock_prepare_route_message_base(rtm, cmd);
735 rtsock_add_rtm_sa(rtm, RTA_DST, dst);
738 rtsock_add_rtm_sa(rtm, RTA_GATEWAY, gw);
739 rtm->rtm_flags |= RTF_GATEWAY;
743 rtsock_add_rtm_sa(rtm, RTA_NETMASK, mask);
747 rtsock_add_rtm_sa(struct rt_msghdr *rtm, int addr_type, struct sockaddr *sa)
749 char *ptr = (char *)(rtm + 1);
750 for (int i = 0; i < RTAX_MAX; i++) {
751 if (rtm->rtm_addrs & (1 << i)) {
753 ptr += ALIGN(((struct sockaddr *)ptr)->sa_len);
757 rtm->rtm_addrs |= addr_type;
758 memcpy(ptr, sa, sa->sa_len);
762 rtsock_find_rtm_sa(struct rt_msghdr *rtm, int addr_type)
764 char *ptr = (char *)(rtm + 1);
765 for (int i = 0; i < RTAX_MAX; i++) {
766 if (rtm->rtm_addrs & (1 << i)) {
767 if (addr_type == (1 << i))
768 return ((struct sockaddr *)ptr);
770 ptr += ALIGN(((struct sockaddr *)ptr)->sa_len);
778 rtsock_calc_rtm_len(struct rt_msghdr *rtm)
780 size_t len = sizeof(struct rt_msghdr);
782 char *ptr = (char *)(rtm + 1);
783 for (int i = 0; i < RTAX_MAX; i++) {
784 if (rtm->rtm_addrs & (1 << i)) {
786 int sa_len = ALIGN(((struct sockaddr *)ptr)->sa_len);
796 rtsock_update_rtm_len(struct rt_msghdr *rtm)
799 rtm->rtm_msglen = rtsock_calc_rtm_len(rtm);
803 _validate_message_sockaddrs(char *buffer, int rtm_len, size_t offset, int rtm_addrs)
806 size_t parsed_len = offset;
808 /* Offset denotes initial header size */
809 sa = (struct sockaddr *)(buffer + offset);
811 for (int i = 0; i < RTAX_MAX; i++) {
812 if ((rtm_addrs & (1 << i)) == 0)
814 parsed_len += SA_SIZE(sa);
815 RTSOCK_ATF_REQUIRE_MSG((struct rt_msghdr *)buffer, parsed_len <= rtm_len,
816 "SA %d: len %d exceeds msg size %d", i, (int)sa->sa_len, rtm_len);
817 if (sa->sa_family == AF_LINK) {
818 struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa;
819 int data_len = sdl->sdl_nlen + sdl->sdl_alen;
820 data_len += offsetof(struct sockaddr_dl, sdl_data);
822 RTSOCK_ATF_REQUIRE_MSG((struct rt_msghdr *)buffer,
824 "AF_LINK data size exceeds total len: %u vs %u, nlen=%d alen=%d",
825 data_len, rtm_len, sdl->sdl_nlen, sdl->sdl_alen);
827 sa = (struct sockaddr *)((char *)sa + SA_SIZE(sa));
832 * Raises error if base syntax checks fails.
835 rtsock_validate_message(char *buffer, ssize_t len)
837 struct rt_msghdr *rtm;
839 ATF_REQUIRE_MSG(len > 0, "read() return %zd, error: %s", len, strerror(errno));
841 rtm = (struct rt_msghdr *)buffer;
842 ATF_REQUIRE_MSG(rtm->rtm_version == RTM_VERSION, "unknown RTM_VERSION: expected %d got %d",
843 RTM_VERSION, rtm->rtm_version);
844 ATF_REQUIRE_MSG(rtm->rtm_msglen <= len, "wrong message length: expected %d got %d",
845 (int)len, (int)rtm->rtm_msglen);
847 switch (rtm->rtm_type) {
852 _validate_message_sockaddrs(buffer, rtm->rtm_msglen,
853 sizeof(struct rt_msghdr), rtm->rtm_addrs);
857 _validate_message_sockaddrs(buffer, rtm->rtm_msglen,
858 sizeof(struct ifa_msghdr), ((struct ifa_msghdr *)buffer)->ifam_addrs);
864 rtsock_validate_pid_ours(struct rt_msghdr *rtm)
866 RTSOCK_ATF_REQUIRE_MSG(rtm, rtm->rtm_pid == getpid(), "expected pid %d, got %d",
867 getpid(), rtm->rtm_pid);
871 rtsock_validate_pid_user(struct rt_msghdr *rtm)
873 RTSOCK_ATF_REQUIRE_MSG(rtm, rtm->rtm_pid > 0, "expected non-zero pid, got %d",
878 rtsock_validate_pid_kernel(struct rt_msghdr *rtm)
880 RTSOCK_ATF_REQUIRE_MSG(rtm, rtm->rtm_pid == 0, "expected zero pid, got %d",