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
18 * along with GNU Zebra; see the file COPYING. If not, write to the Free
19 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
26 #include "sockunion.h"
29 #include "connected.h"
31 #include "zebra_memory.h"
37 #include "zebra/interface.h"
38 #include "zebra/ioctl_solaris.h"
39 #include "zebra/rib.h"
41 static int if_get_addr (struct interface
*, struct sockaddr
*, const char *);
42 static void interface_info_ioctl (struct interface
*);
43 extern struct zebra_privs_t zserv_privs
;
46 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);
67 zlog_warn ("Can't make %s socket stream: %s",
68 (af
== AF_INET
? "AF_INET" : "AF_INET6"), 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");
87 zlog_warn ("interface_list_ioctl: SIOCGLIFNUM failed %s",
88 safe_strerror (save_errno
));
92 ifnum
= lifn
.lifn_count
;
95 * When calculating the buffer size needed, add a small number
96 * of interfaces to those we counted. We do this to capture
97 * the interface status of potential interfaces which may have
98 * been plumbed between the SIOCGLIFNUM and the SIOCGLIFCONF.
100 needed
= (ifnum
+ 4) * sizeof (struct lifreq
);
101 if (needed
> lastneeded
|| needed
< lastneeded
/ 2)
104 XFREE (MTYPE_TMP
, buf
);
105 if ((buf
= XMALLOC (MTYPE_TMP
, needed
)) == NULL
)
107 zlog_warn ("interface_list_ioctl: malloc failed");
114 lifconf
.lifc_family
= af
;
115 lifconf
.lifc_flags
= LIFC_NOXMIT
;
116 lifconf
.lifc_len
= needed
;
117 lifconf
.lifc_buf
= buf
;
119 if (zserv_privs
.change(ZPRIVS_RAISE
))
120 zlog_err("Can't raise privileges");
122 ret
= ioctl (sock
, SIOCGLIFCONF
, &lifconf
);
127 goto calculate_lifc_len
; /* deliberately hold privileges */
129 zlog_warn ("SIOCGLIFCONF: %s", safe_strerror (errno
));
131 if (zserv_privs
.change(ZPRIVS_LOWER
))
132 zlog_err("Can't lower privileges");
137 if (zserv_privs
.change(ZPRIVS_LOWER
))
138 zlog_err("Can't lower privileges");
140 /* Allocate interface. */
141 lifreq
= lifconf
.lifc_req
;
143 for (n
= 0; n
< lifconf
.lifc_len
; n
+= sizeof (struct lifreq
))
145 /* we treat Solaris logical interfaces as addresses, because that is
146 * how PF_ROUTE on Solaris treats them. Hence we can not directly use
147 * the lifreq_name to get the ifp. We need to normalise the name
148 * before attempting get.
150 * Solaris logical interface names are in the form of:
151 * <interface name>:<logical interface id>
153 unsigned int normallen
= 0;
156 /* We should exclude ~IFF_UP interfaces, as we'll find out about them
157 * coming up later through RTM_NEWADDR message on the route socket.
159 if (if_get_flags_direct (lifreq
->lifr_name
, &lifflags
,
160 lifreq
->lifr_addr
.ss_family
)
161 || !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_len(lifreq
->lifr_name
, normallen
, 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
)
180 ifp
->flags
|= IFF_IPV6
;
185 interface_info_ioctl (ifp
);
187 /* If a logical interface pass the full name so it can be
188 * as a label on the address
190 if ( *(lifreq
->lifr_name
+ normallen
) != '\0')
191 if_get_addr (ifp
, (struct sockaddr
*) &lifreq
->lifr_addr
,
194 if_get_addr (ifp
, (struct sockaddr
*) &lifreq
->lifr_addr
, NULL
);
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. */
210 if_get_index (struct interface
*ifp
)
213 struct lifreq lifreq
;
215 lifreq_set_name (&lifreq
, ifp
->name
);
217 if (ifp
->flags
& IFF_IPV4
)
218 ret
= AF_IOCTL (AF_INET
, SIOCGLIFINDEX
, (caddr_t
) & lifreq
);
219 else if (ifp
->flags
& IFF_IPV6
)
220 ret
= AF_IOCTL (AF_INET6
, SIOCGLIFINDEX
, (caddr_t
) & lifreq
);
226 zlog_warn ("SIOCGLIFINDEX(%s) failed", ifp
->name
);
230 /* OK we got interface index. */
232 ifp
->ifindex
= lifreq
.lifr_ifindex
;
234 ifp
->ifindex
= lifreq
.lifr_index
;
241 /* Interface address lookup by ioctl. This function only looks up
243 #define ADDRLEN(sa) (((sa)->sa_family == AF_INET ? \
244 sizeof (struct sockaddr_in) : sizeof (struct sockaddr_in6)))
246 #define SIN(s) ((struct sockaddr_in *)(s))
247 #define SIN6(s) ((struct sockaddr_in6 *)(s))
249 /* Retrieve address information for the given ifp */
251 if_get_addr (struct interface
*ifp
, struct sockaddr
*addr
, const char *label
)
254 struct lifreq lifreq
;
255 struct sockaddr_storage mask
, dest
;
256 char *dest_pnt
= NULL
;
257 u_char prefixlen
= 0;
261 /* Interface's name and address family.
262 * We need to use the logical interface name / label, if we've been
263 * given one, in order to get the right address
265 strncpy (lifreq
.lifr_name
, (label
? label
: ifp
->name
), IFNAMSIZ
);
267 /* Interface's address. */
268 memcpy (&lifreq
.lifr_addr
, addr
, ADDRLEN (addr
));
269 af
= addr
->sa_family
;
271 /* Point to point or broad cast address pointer init. */
274 if (AF_IOCTL (af
, SIOCGLIFDSTADDR
, (caddr_t
) & lifreq
) >= 0)
276 memcpy (&dest
, &lifreq
.lifr_dstaddr
, ADDRLEN (addr
));
278 dest_pnt
= (char *) &(SIN (&dest
)->sin_addr
);
280 dest_pnt
= (char *) &(SIN6 (&dest
)->sin6_addr
);
281 flags
= ZEBRA_IFA_PEER
;
286 ret
= if_ioctl (SIOCGLIFNETMASK
, (caddr_t
) & lifreq
);
290 if (errno
!= EADDRNOTAVAIL
)
292 zlog_warn ("SIOCGLIFNETMASK (%s) fail: %s", ifp
->name
,
293 safe_strerror (errno
));
298 memcpy (&mask
, &lifreq
.lifr_addr
, ADDRLEN (addr
));
300 prefixlen
= ip_masklen (SIN (&mask
)->sin_addr
);
301 if (!dest_pnt
&& (if_ioctl (SIOCGLIFBRDADDR
, (caddr_t
) & lifreq
) >= 0))
303 memcpy (&dest
, &lifreq
.lifr_broadaddr
, sizeof (struct sockaddr_in
));
304 dest_pnt
= (char *) &SIN (&dest
)->sin_addr
;
307 else if (af
== AF_INET6
)
309 if (if_ioctl_ipv6 (SIOCGLIFSUBNET
, (caddr_t
) & lifreq
) < 0)
311 if (ifp
->flags
& IFF_POINTOPOINT
)
312 prefixlen
= IPV6_MAX_BITLEN
;
314 zlog_warn ("SIOCGLIFSUBNET (%s) fail: %s",
315 ifp
->name
, safe_strerror (errno
));
319 prefixlen
= lifreq
.lifr_addrlen
;
323 /* Set address to the interface. */
325 connected_add_ipv4 (ifp
, flags
, &SIN (addr
)->sin_addr
, prefixlen
,
326 (struct in_addr
*) dest_pnt
, label
);
327 else if (af
== AF_INET6
)
328 connected_add_ipv6 (ifp
, flags
, &SIN6 (addr
)->sin6_addr
, prefixlen
,
329 (struct in6_addr
*) dest_pnt
, label
);
334 /* Fetch interface information via ioctl(). */
336 interface_info_ioctl (struct interface
*ifp
)
344 /* Lookup all interface information. */
346 interface_list (struct zebra_ns
*zns
)
348 if (zns
->ns_id
!= NS_DEFAULT
)
350 zlog_warn ("interface_list: ignore NS %u", zns
->ns_id
);
353 interface_list_ioctl (AF_INET
);
354 interface_list_ioctl (AF_INET6
);
355 interface_list_ioctl (AF_UNSPEC
);
359 if_lookup_linklocal (struct interface
*ifp
)
361 struct listnode
*node
;
362 struct connected
*ifc
;
367 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, node
, ifc
))
369 if ((ifc
->address
->family
== AF_INET6
) &&
370 (IN6_IS_ADDR_LINKLOCAL (&ifc
->address
->u
.prefix6
)))