svr4_sockio.c revision 116174 
1/*
2 * Copyright (c) 1998 Mark Newton
3 * Copyright (c) 1995 Christos Zoulas
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
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.
14 * 3. The name of the author may not be used to endorse or promote products
15 *    derived from this software without specific prior written permission
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30__FBSDID("$FreeBSD: head/sys/compat/svr4/svr4_sockio.c 116174 2003-06-10 21:44:29Z obrien $");
31
32#include <sys/param.h>
33#include <sys/proc.h>
34#include <sys/systm.h>
35#include <sys/file.h>
36#include <sys/filedesc.h>
37#include <sys/sockio.h>
38#include <sys/socket.h>
39#include <net/if.h>
40
41
42#include <compat/svr4/svr4.h>
43#include <compat/svr4/svr4_util.h>
44#include <compat/svr4/svr4_ioctl.h>
45#include <compat/svr4/svr4_sockio.h>
46
47static int bsd_to_svr4_flags(int);
48
49#define bsd_to_svr4_flag(a) \
50	if (bf & __CONCAT(I,a))	sf |= __CONCAT(SVR4_I,a)
51
52static int
53bsd_to_svr4_flags(bf)
54	int bf;
55{
56	int sf = 0;
57	bsd_to_svr4_flag(FF_UP);
58	bsd_to_svr4_flag(FF_BROADCAST);
59	bsd_to_svr4_flag(FF_DEBUG);
60	bsd_to_svr4_flag(FF_LOOPBACK);
61	bsd_to_svr4_flag(FF_POINTOPOINT);
62#if defined(IFF_NOTRAILERS)
63	bsd_to_svr4_flag(FF_NOTRAILERS);
64#endif
65	bsd_to_svr4_flag(FF_RUNNING);
66	bsd_to_svr4_flag(FF_NOARP);
67	bsd_to_svr4_flag(FF_PROMISC);
68	bsd_to_svr4_flag(FF_ALLMULTI);
69	bsd_to_svr4_flag(FF_MULTICAST);
70	return sf;
71}
72
73int
74svr4_sock_ioctl(fp, td, retval, fd, cmd, data)
75	struct file *fp;
76	struct thread *td;
77	register_t *retval;
78	int fd;
79	u_long cmd;
80	caddr_t data;
81{
82	int error;
83
84	*retval = 0;
85
86	switch (cmd) {
87	case SVR4_SIOCGIFNUM:
88		{
89			struct ifnet *ifp;
90			struct ifaddr *ifa;
91			int ifnum = 0;
92
93			/*
94			 * This does not return the number of physical
95			 * interfaces (if_index), but the number of interfaces
96			 * + addresses like ifconf() does, because this number
97			 * is used by code that will call SVR4_SIOCGIFCONF to
98			 * find the space needed for SVR4_SIOCGIFCONF. So we
99			 * count the number of ifreq entries that the next
100			 * SVR4_SIOCGIFCONF will return. Maybe a more correct
101			 * fix is to make SVR4_SIOCGIFCONF return only one
102			 * entry per physical interface?
103			 */
104			IFNET_RLOCK();
105			TAILQ_FOREACH(ifp, &ifnet, if_link)
106				if (TAILQ_FIRST(&ifp->if_addrhead) == NULL)
107					ifnum++;
108				else
109					TAILQ_FOREACH(ifa, &ifp->if_addrhead,
110					    ifa_link)
111						ifnum++;
112			IFNET_RUNLOCK();
113			DPRINTF(("SIOCGIFNUM %d\n", ifnum));
114			return copyout(&ifnum, data, sizeof(ifnum));
115		}
116
117	case SVR4_SIOCGIFFLAGS:
118		{
119			struct ifreq br;
120			struct svr4_ifreq sr;
121
122			if ((error = copyin(data, &sr, sizeof(sr))) != 0)
123				return error;
124
125			(void) strlcpy(br.ifr_name, sr.svr4_ifr_name,
126			    sizeof(br.ifr_name));
127			if ((error = fo_ioctl(fp, SIOCGIFFLAGS,
128					    (caddr_t) &br, td->td_ucred,
129					    td)) != 0) {
130				DPRINTF(("SIOCGIFFLAGS (%s) %s: error %d\n",
131					 br.ifr_name, sr.svr4_ifr_name, error));
132				return error;
133			}
134
135			sr.svr4_ifr_flags = bsd_to_svr4_flags(br.ifr_flags);
136			DPRINTF(("SIOCGIFFLAGS %s = %x\n",
137				sr.svr4_ifr_name, sr.svr4_ifr_flags));
138			return copyout(&sr, data, sizeof(sr));
139		}
140
141	case SVR4_SIOCGIFCONF:
142		{
143			struct svr4_ifconf sc;
144
145			if ((error = copyin(data, &sc, sizeof(sc))) != 0)
146				return error;
147
148			DPRINTF(("ifreq %d svr4_ifreq %d ifc_len %d\n",
149				sizeof(struct ifreq), sizeof(struct svr4_ifreq),
150				sc.svr4_ifc_len));
151
152			if ((error = fo_ioctl(fp, OSIOCGIFCONF,
153					    (caddr_t) &sc, td->td_ucred,
154					    td)) != 0)
155				return error;
156
157			DPRINTF(("SIOCGIFCONF\n"));
158			return 0;
159		}
160
161
162	default:
163		DPRINTF(("Unknown svr4 sockio %lx\n", cmd));
164		return 0;	/* ENOSYS really */
165	}
166}
167