2 * Interface looking up by ioctl () on Solaris.
3 * Copyright (C) 1997, 98 Kunihiro Ishiguro
5 * This file is part of GNU Zebra.
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
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.
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
27 #include "sockunion.h"
30 #include "connected.h"
32 #include "zebra_memory.h"
38 #include "zebra/interface.h"
39 #include "zebra/ioctl_solaris.h"
40 #include "zebra/rib.h"
42 static int if_get_addr(struct interface
*, struct sockaddr
*, const char *);
43 static void interface_info_ioctl(struct interface
*);
44 extern struct zebra_privs_t zserv_privs
;
46 static int interface_list_ioctl(int af
)
53 struct lifreq
*lifreq
;
54 struct lifconf lifconf
;
55 struct interface
*ifp
;
58 size_t needed
, lastneeded
= 0;
61 if (zserv_privs
.change(ZPRIVS_RAISE
))
62 zlog_err("Can't raise privileges");
64 sock
= socket(af
, SOCK_DGRAM
, 0);
66 zlog_warn("Can't make %s socket stream: %s",
67 (af
== AF_INET
? "AF_INET" : "AF_INET6"),
68 safe_strerror(errno
));
70 if (zserv_privs
.change(ZPRIVS_LOWER
))
71 zlog_err("Can't lower privileges");
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
);
82 if (zserv_privs
.change(ZPRIVS_LOWER
))
83 zlog_err("Can't lower privileges");
86 zlog_warn("interface_list_ioctl: SIOCGLIFNUM failed %s",
87 safe_strerror(save_errno
));
91 ifnum
= lifn
.lifn_count
;
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.
99 needed
= (ifnum
+ 4) * sizeof(struct lifreq
);
100 if (needed
> lastneeded
|| needed
< lastneeded
/ 2) {
102 XFREE(MTYPE_TMP
, buf
);
103 if ((buf
= XMALLOC(MTYPE_TMP
, needed
)) == NULL
) {
104 zlog_warn("interface_list_ioctl: malloc failed");
111 lifconf
.lifc_family
= af
;
112 lifconf
.lifc_flags
= LIFC_NOXMIT
;
113 lifconf
.lifc_len
= needed
;
114 lifconf
.lifc_buf
= buf
;
116 if (zserv_privs
.change(ZPRIVS_RAISE
))
117 zlog_err("Can't raise privileges");
119 ret
= ioctl(sock
, SIOCGLIFCONF
, &lifconf
);
123 goto calculate_lifc_len
; /* deliberately hold privileges
126 zlog_warn("SIOCGLIFCONF: %s", safe_strerror(errno
));
128 if (zserv_privs
.change(ZPRIVS_LOWER
))
129 zlog_err("Can't lower privileges");
134 if (zserv_privs
.change(ZPRIVS_LOWER
))
135 zlog_err("Can't lower privileges");
137 /* Allocate interface. */
138 lifreq
= lifconf
.lifc_req
;
140 for (n
= 0; n
< lifconf
.lifc_len
; n
+= sizeof(struct lifreq
)) {
141 /* we treat Solaris logical interfaces as addresses, because
143 * how PF_ROUTE on Solaris treats them. Hence we can not
145 * the lifreq_name to get the ifp. We need to normalise the
147 * before attempting get.
149 * Solaris logical interface names are in the form of:
150 * <interface name>:<logical interface id>
152 unsigned int normallen
= 0;
155 /* We should exclude ~IFF_UP interfaces, as we'll find out about
157 * coming up later through RTM_NEWADDR message on the route
160 if (if_get_flags_direct(lifreq
->lifr_name
, &lifflags
,
161 lifreq
->lifr_addr
.ss_family
)
162 || !CHECK_FLAG(lifflags
, IFF_UP
)) {
167 /* Find the normalised name */
168 while ((normallen
< sizeof(lifreq
->lifr_name
))
169 && (*(lifreq
->lifr_name
+ normallen
) != '\0')
170 && (*(lifreq
->lifr_name
+ normallen
) != ':'))
173 ifp
= if_get_by_name(lifreq
->lifr_name
, VRF_DEFAULT
, 0);
175 if (lifreq
->lifr_addr
.ss_family
== AF_INET
)
176 ifp
->flags
|= IFF_IPV4
;
178 if (lifreq
->lifr_addr
.ss_family
== AF_INET6
) {
179 ifp
->flags
|= IFF_IPV6
;
184 interface_info_ioctl(ifp
);
186 /* If a logical interface pass the full name so it can be
187 * as a label on the address
189 if (*(lifreq
->lifr_name
+ normallen
) != '\0')
190 if_get_addr(ifp
, (struct sockaddr
*)&lifreq
->lifr_addr
,
193 if_get_addr(ifp
, (struct sockaddr
*)&lifreq
->lifr_addr
,
196 /* Poke the interface flags. Lets IFF_UP mangling kick in */
197 if_flags_update(ifp
, ifp
->flags
);
204 XFREE(MTYPE_TMP
, lifconf
.lifc_buf
);
208 /* Get interface's index by ioctl. */
209 static int if_get_index(struct interface
*ifp
)
212 struct lifreq lifreq
;
214 lifreq_set_name(&lifreq
, ifp
->name
);
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
);
224 zlog_warn("SIOCGLIFINDEX(%s) failed", ifp
->name
);
228 /* OK we got interface index. */
230 if_set_index(ifp
, lifreq
.lifr_ifindex
);
232 if_set_index(ifp
, lifreq
.lifr_index
);
238 /* Interface address lookup by ioctl. This function only looks up
240 #define ADDRLEN(sa) \
241 (((sa)->sa_family == AF_INET ? sizeof(struct sockaddr_in) \
242 : sizeof(struct sockaddr_in6)))
244 #define SIN(s) ((struct sockaddr_in *)(s))
245 #define SIN6(s) ((struct sockaddr_in6 *)(s))
247 /* Retrieve address information for the given ifp */
248 static int if_get_addr(struct interface
*ifp
, struct sockaddr
*addr
,
252 struct lifreq lifreq
;
253 struct sockaddr_storage mask
, dest
;
254 char *dest_pnt
= NULL
;
255 u_char prefixlen
= 0;
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
263 strncpy(lifreq
.lifr_name
, (label
? label
: ifp
->name
), IFNAMSIZ
);
265 /* Interface's address. */
266 memcpy(&lifreq
.lifr_addr
, addr
, ADDRLEN(addr
));
267 af
= addr
->sa_family
;
269 /* Point to point or broad cast address pointer init. */
272 if (AF_IOCTL(af
, SIOCGLIFDSTADDR
, (caddr_t
)&lifreq
) >= 0) {
273 memcpy(&dest
, &lifreq
.lifr_dstaddr
, ADDRLEN(addr
));
275 dest_pnt
= (char *)&(SIN(&dest
)->sin_addr
);
277 dest_pnt
= (char *)&(SIN6(&dest
)->sin6_addr
);
278 flags
= ZEBRA_IFA_PEER
;
282 ret
= if_ioctl(SIOCGLIFNETMASK
, (caddr_t
)&lifreq
);
285 if (errno
!= EADDRNOTAVAIL
) {
286 zlog_warn("SIOCGLIFNETMASK (%s) fail: %s",
287 ifp
->name
, safe_strerror(errno
));
292 memcpy(&mask
, &lifreq
.lifr_addr
, ADDRLEN(addr
));
294 prefixlen
= ip_masklen(SIN(&mask
)->sin_addr
);
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
;
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
;
306 zlog_warn("SIOCGLIFSUBNET (%s) fail: %s",
307 ifp
->name
, safe_strerror(errno
));
309 prefixlen
= lifreq
.lifr_addrlen
;
313 /* Set address to the interface. */
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
,
324 /* Fetch interface information via ioctl(). */
325 static void interface_info_ioctl(struct interface
*ifp
)
333 /* Lookup all interface information. */
334 void interface_list(struct zebra_ns
*zns
)
336 if (zns
->ns_id
!= NS_DEFAULT
) {
337 zlog_warn("interface_list: ignore NS %u", zns
->ns_id
);
340 interface_list_ioctl(AF_INET
);
341 interface_list_ioctl(AF_INET6
);
342 interface_list_ioctl(AF_UNSPEC
);
345 struct connected
*if_lookup_linklocal(struct interface
*ifp
)
347 struct listnode
*node
;
348 struct connected
*ifc
;
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
)))