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8842468c | 1 | /* |
2 | * Interface looking up by ioctl () on Solaris. | |
3 | * Copyright (C) 1997, 98 Kunihiro Ishiguro | |
4 | * | |
5 | * This file is part of GNU Zebra. | |
6 | * | |
7 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * GNU Zebra is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
896014f4 DL |
17 | * You should have received a copy of the GNU General Public License along |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
8842468c | 20 | */ |
21 | ||
22 | #include <zebra.h> | |
23 | ||
ddfeb486 DL |
24 | #ifdef SUNOS_5 |
25 | ||
8842468c | 26 | #include "if.h" |
27 | #include "sockunion.h" | |
28 | #include "prefix.h" | |
29 | #include "ioctl.h" | |
30 | #include "connected.h" | |
31 | #include "memory.h" | |
4a1ab8e4 | 32 | #include "zebra_memory.h" |
8842468c | 33 | #include "log.h" |
48a46fa0 | 34 | #include "privs.h" |
8f7d9fc0 | 35 | #include "vrf.h" |
82283592 | 36 | #include "vty.h" |
8842468c | 37 | |
38 | #include "zebra/interface.h" | |
8d610213 | 39 | #include "zebra/ioctl_solaris.h" |
8f7d9fc0 | 40 | #include "zebra/rib.h" |
8842468c | 41 | |
d62a17ae | 42 | static int if_get_addr(struct interface *, struct sockaddr *, const char *); |
43 | static void interface_info_ioctl(struct interface *); | |
48a46fa0 | 44 | extern struct zebra_privs_t zserv_privs; |
8842468c | 45 | |
d62a17ae | 46 | static int interface_list_ioctl(int af) |
8842468c | 47 | { |
d62a17ae | 48 | int ret; |
49 | int sock; | |
8842468c | 50 | #define IFNUM_BASE 32 |
d62a17ae | 51 | struct lifnum lifn; |
52 | int ifnum; | |
53 | struct lifreq *lifreq; | |
54 | struct lifconf lifconf; | |
55 | struct interface *ifp; | |
56 | int n; | |
57 | int save_errno; | |
58 | size_t needed, lastneeded = 0; | |
59 | char *buf = NULL; | |
60 | ||
61 | if (zserv_privs.change(ZPRIVS_RAISE)) | |
62 | zlog_err("Can't raise privileges"); | |
63 | ||
64 | sock = socket(af, SOCK_DGRAM, 0); | |
65 | if (sock < 0) { | |
66 | zlog_warn("Can't make %s socket stream: %s", | |
67 | (af == AF_INET ? "AF_INET" : "AF_INET6"), | |
68 | safe_strerror(errno)); | |
69 | ||
70 | if (zserv_privs.change(ZPRIVS_LOWER)) | |
71 | zlog_err("Can't lower privileges"); | |
72 | ||
73 | return -1; | |
74 | } | |
75 | ||
76 | calculate_lifc_len: /* must hold privileges to enter here */ | |
77 | lifn.lifn_family = af; | |
78 | lifn.lifn_flags = LIFC_NOXMIT; /* we want NOXMIT interfaces too */ | |
79 | ret = ioctl(sock, SIOCGLIFNUM, &lifn); | |
80 | save_errno = errno; | |
81 | ||
82 | if (zserv_privs.change(ZPRIVS_LOWER)) | |
83 | zlog_err("Can't lower privileges"); | |
84 | ||
85 | if (ret < 0) { | |
86 | zlog_warn("interface_list_ioctl: SIOCGLIFNUM failed %s", | |
87 | safe_strerror(save_errno)); | |
88 | close(sock); | |
89 | return -1; | |
90 | } | |
91 | ifnum = lifn.lifn_count; | |
92 | ||
93 | /* | |
94 | * When calculating the buffer size needed, add a small number | |
95 | * of interfaces to those we counted. We do this to capture | |
96 | * the interface status of potential interfaces which may have | |
97 | * been plumbed between the SIOCGLIFNUM and the SIOCGLIFCONF. | |
98 | */ | |
99 | needed = (ifnum + 4) * sizeof(struct lifreq); | |
100 | if (needed > lastneeded || needed < lastneeded / 2) { | |
101 | if (buf != NULL) | |
102 | XFREE(MTYPE_TMP, buf); | |
103 | if ((buf = XMALLOC(MTYPE_TMP, needed)) == NULL) { | |
104 | zlog_warn("interface_list_ioctl: malloc failed"); | |
105 | close(sock); | |
106 | return -1; | |
107 | } | |
108 | } | |
109 | lastneeded = needed; | |
110 | ||
111 | lifconf.lifc_family = af; | |
112 | lifconf.lifc_flags = LIFC_NOXMIT; | |
113 | lifconf.lifc_len = needed; | |
114 | lifconf.lifc_buf = buf; | |
115 | ||
116 | if (zserv_privs.change(ZPRIVS_RAISE)) | |
117 | zlog_err("Can't raise privileges"); | |
118 | ||
119 | ret = ioctl(sock, SIOCGLIFCONF, &lifconf); | |
120 | ||
121 | if (ret < 0) { | |
122 | if (errno == EINVAL) | |
123 | goto calculate_lifc_len; /* deliberately hold privileges | |
9d303b37 | 124 | */ |
d62a17ae | 125 | |
126 | zlog_warn("SIOCGLIFCONF: %s", safe_strerror(errno)); | |
127 | ||
128 | if (zserv_privs.change(ZPRIVS_LOWER)) | |
129 | zlog_err("Can't lower privileges"); | |
130 | ||
131 | goto end; | |
132 | } | |
133 | ||
134 | if (zserv_privs.change(ZPRIVS_LOWER)) | |
135 | zlog_err("Can't lower privileges"); | |
136 | ||
137 | /* Allocate interface. */ | |
138 | lifreq = lifconf.lifc_req; | |
139 | ||
140 | for (n = 0; n < lifconf.lifc_len; n += sizeof(struct lifreq)) { | |
141 | /* we treat Solaris logical interfaces as addresses, because | |
142 | * that is | |
143 | * how PF_ROUTE on Solaris treats them. Hence we can not | |
144 | * directly use | |
145 | * the lifreq_name to get the ifp. We need to normalise the | |
146 | * name | |
147 | * before attempting get. | |
148 | * | |
149 | * Solaris logical interface names are in the form of: | |
150 | * <interface name>:<logical interface id> | |
151 | */ | |
152 | unsigned int normallen = 0; | |
153 | uint64_t lifflags; | |
154 | ||
155 | /* We should exclude ~IFF_UP interfaces, as we'll find out about | |
156 | * them | |
157 | * coming up later through RTM_NEWADDR message on the route | |
158 | * socket. | |
159 | */ | |
160 | if (if_get_flags_direct(lifreq->lifr_name, &lifflags, | |
161 | lifreq->lifr_addr.ss_family) | |
162 | || !CHECK_FLAG(lifflags, IFF_UP)) { | |
163 | lifreq++; | |
164 | continue; | |
165 | } | |
166 | ||
167 | /* Find the normalised name */ | |
168 | while ((normallen < sizeof(lifreq->lifr_name)) | |
169 | && (*(lifreq->lifr_name + normallen) != '\0') | |
170 | && (*(lifreq->lifr_name + normallen) != ':')) | |
171 | normallen++; | |
172 | ||
bcc24579 | 173 | ifp = if_get_by_name(lifreq->lifr_name, VRF_DEFAULT, 0); |
d62a17ae | 174 | |
175 | if (lifreq->lifr_addr.ss_family == AF_INET) | |
176 | ifp->flags |= IFF_IPV4; | |
177 | ||
178 | if (lifreq->lifr_addr.ss_family == AF_INET6) { | |
179 | ifp->flags |= IFF_IPV6; | |
180 | } | |
181 | ||
182 | if_add_update(ifp); | |
183 | ||
184 | interface_info_ioctl(ifp); | |
185 | ||
186 | /* If a logical interface pass the full name so it can be | |
187 | * as a label on the address | |
188 | */ | |
189 | if (*(lifreq->lifr_name + normallen) != '\0') | |
190 | if_get_addr(ifp, (struct sockaddr *)&lifreq->lifr_addr, | |
191 | lifreq->lifr_name); | |
192 | else | |
193 | if_get_addr(ifp, (struct sockaddr *)&lifreq->lifr_addr, | |
194 | NULL); | |
195 | ||
196 | /* Poke the interface flags. Lets IFF_UP mangling kick in */ | |
197 | if_flags_update(ifp, ifp->flags); | |
198 | ||
199 | lifreq++; | |
200 | } | |
8842468c | 201 | |
202 | end: | |
d62a17ae | 203 | close(sock); |
204 | XFREE(MTYPE_TMP, lifconf.lifc_buf); | |
205 | return ret; | |
8842468c | 206 | } |
207 | ||
208 | /* Get interface's index by ioctl. */ | |
d62a17ae | 209 | static int if_get_index(struct interface *ifp) |
8842468c | 210 | { |
d62a17ae | 211 | int ret; |
212 | struct lifreq lifreq; | |
8842468c | 213 | |
d62a17ae | 214 | lifreq_set_name(&lifreq, ifp->name); |
8842468c | 215 | |
d62a17ae | 216 | if (ifp->flags & IFF_IPV4) |
217 | ret = AF_IOCTL(AF_INET, SIOCGLIFINDEX, (caddr_t)&lifreq); | |
218 | else if (ifp->flags & IFF_IPV6) | |
219 | ret = AF_IOCTL(AF_INET6, SIOCGLIFINDEX, (caddr_t)&lifreq); | |
220 | else | |
221 | ret = -1; | |
8842468c | 222 | |
d62a17ae | 223 | if (ret < 0) { |
224 | zlog_warn("SIOCGLIFINDEX(%s) failed", ifp->name); | |
225 | return ret; | |
226 | } | |
8842468c | 227 | |
d62a17ae | 228 | /* OK we got interface index. */ |
8842468c | 229 | #ifdef ifr_ifindex |
ff880b78 | 230 | if_set_index(ifp, lifreq.lifr_ifindex); |
8842468c | 231 | #else |
ff880b78 | 232 | if_set_index(ifp, lifreq.lifr_index); |
8842468c | 233 | #endif |
d62a17ae | 234 | return ifp->ifindex; |
8842468c | 235 | } |
236 | ||
237 | ||
238 | /* Interface address lookup by ioctl. This function only looks up | |
239 | IPv4 address. */ | |
d62a17ae | 240 | #define ADDRLEN(sa) \ |
241 | (((sa)->sa_family == AF_INET ? sizeof(struct sockaddr_in) \ | |
242 | : sizeof(struct sockaddr_in6))) | |
8842468c | 243 | |
244 | #define SIN(s) ((struct sockaddr_in *)(s)) | |
245 | #define SIN6(s) ((struct sockaddr_in6 *)(s)) | |
246 | ||
0752ef0b | 247 | /* Retrieve address information for the given ifp */ |
d62a17ae | 248 | static int if_get_addr(struct interface *ifp, struct sockaddr *addr, |
249 | const char *label) | |
8842468c | 250 | { |
d62a17ae | 251 | int ret; |
252 | struct lifreq lifreq; | |
253 | struct sockaddr_storage mask, dest; | |
254 | char *dest_pnt = NULL; | |
255 | u_char prefixlen = 0; | |
256 | afi_t af; | |
257 | int flags = 0; | |
258 | ||
259 | /* Interface's name and address family. | |
260 | * We need to use the logical interface name / label, if we've been | |
261 | * given one, in order to get the right address | |
262 | */ | |
263 | strncpy(lifreq.lifr_name, (label ? label : ifp->name), IFNAMSIZ); | |
264 | ||
265 | /* Interface's address. */ | |
266 | memcpy(&lifreq.lifr_addr, addr, ADDRLEN(addr)); | |
267 | af = addr->sa_family; | |
268 | ||
269 | /* Point to point or broad cast address pointer init. */ | |
270 | dest_pnt = NULL; | |
271 | ||
272 | if (AF_IOCTL(af, SIOCGLIFDSTADDR, (caddr_t)&lifreq) >= 0) { | |
273 | memcpy(&dest, &lifreq.lifr_dstaddr, ADDRLEN(addr)); | |
274 | if (af == AF_INET) | |
275 | dest_pnt = (char *)&(SIN(&dest)->sin_addr); | |
276 | else | |
277 | dest_pnt = (char *)&(SIN6(&dest)->sin6_addr); | |
278 | flags = ZEBRA_IFA_PEER; | |
fb6724a6 | 279 | } |
d62a17ae | 280 | |
281 | if (af == AF_INET) { | |
282 | ret = if_ioctl(SIOCGLIFNETMASK, (caddr_t)&lifreq); | |
283 | ||
284 | if (ret < 0) { | |
285 | if (errno != EADDRNOTAVAIL) { | |
286 | zlog_warn("SIOCGLIFNETMASK (%s) fail: %s", | |
287 | ifp->name, safe_strerror(errno)); | |
288 | return ret; | |
289 | } | |
290 | return 0; | |
291 | } | |
292 | memcpy(&mask, &lifreq.lifr_addr, ADDRLEN(addr)); | |
293 | ||
294 | prefixlen = ip_masklen(SIN(&mask)->sin_addr); | |
295 | if (!dest_pnt | |
296 | && (if_ioctl(SIOCGLIFBRDADDR, (caddr_t)&lifreq) >= 0)) { | |
297 | memcpy(&dest, &lifreq.lifr_broadaddr, | |
298 | sizeof(struct sockaddr_in)); | |
299 | dest_pnt = (char *)&SIN(&dest)->sin_addr; | |
300 | } | |
301 | } else if (af == AF_INET6) { | |
302 | if (if_ioctl_ipv6(SIOCGLIFSUBNET, (caddr_t)&lifreq) < 0) { | |
303 | if (ifp->flags & IFF_POINTOPOINT) | |
304 | prefixlen = IPV6_MAX_BITLEN; | |
305 | else | |
306 | zlog_warn("SIOCGLIFSUBNET (%s) fail: %s", | |
307 | ifp->name, safe_strerror(errno)); | |
308 | } else { | |
309 | prefixlen = lifreq.lifr_addrlen; | |
310 | } | |
fb6724a6 | 311 | } |
8842468c | 312 | |
d62a17ae | 313 | /* Set address to the interface. */ |
314 | if (af == AF_INET) | |
315 | connected_add_ipv4(ifp, flags, &SIN(addr)->sin_addr, prefixlen, | |
316 | (struct in_addr *)dest_pnt, label); | |
317 | else if (af == AF_INET6) | |
318 | connected_add_ipv6(ifp, flags, &SIN6(addr)->sin6_addr, | |
608105a7 | 319 | prefixlen, label); |
8842468c | 320 | |
d62a17ae | 321 | return 0; |
8842468c | 322 | } |
323 | ||
324 | /* Fetch interface information via ioctl(). */ | |
d62a17ae | 325 | static void interface_info_ioctl(struct interface *ifp) |
8842468c | 326 | { |
d62a17ae | 327 | if_get_index(ifp); |
328 | if_get_flags(ifp); | |
329 | if_get_mtu(ifp); | |
330 | if_get_metric(ifp); | |
8842468c | 331 | } |
332 | ||
333 | /* Lookup all interface information. */ | |
d62a17ae | 334 | void interface_list(struct zebra_ns *zns) |
8842468c | 335 | { |
d62a17ae | 336 | if (zns->ns_id != NS_DEFAULT) { |
337 | zlog_warn("interface_list: ignore NS %u", zns->ns_id); | |
338 | return; | |
339 | } | |
340 | interface_list_ioctl(AF_INET); | |
341 | interface_list_ioctl(AF_INET6); | |
342 | interface_list_ioctl(AF_UNSPEC); | |
8842468c | 343 | } |
344 | ||
d62a17ae | 345 | struct connected *if_lookup_linklocal(struct interface *ifp) |
8842468c | 346 | { |
d62a17ae | 347 | struct listnode *node; |
348 | struct connected *ifc; | |
8842468c | 349 | |
d62a17ae | 350 | if (ifp == NULL) |
351 | return NULL; | |
8842468c | 352 | |
d62a17ae | 353 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, ifc)) { |
354 | if ((ifc->address->family == AF_INET6) | |
355 | && (IN6_IS_ADDR_LINKLOCAL(&ifc->address->u.prefix6))) | |
356 | return ifc; | |
357 | } | |
5b73a671 | 358 | |
d62a17ae | 359 | return NULL; |
8842468c | 360 | } |
ddfeb486 DL |
361 | |
362 | #endif /* SUNOS_5 */ |