svr4_sockio.c revision 194739 
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 194739 2009-06-23 17:03:45Z bz $");
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 <sys/vimage.h>
40
41#include <net/if.h>
42#include <net/vnet.h>
43
44#include <compat/svr4/svr4.h>
45#include <compat/svr4/svr4_util.h>
46#include <compat/svr4/svr4_ioctl.h>
47#include <compat/svr4/svr4_sockio.h>
48
49static int bsd_to_svr4_flags(int);
50
51#define bsd_to_svr4_flag(a) \
52	if (bf & __CONCAT(I,a))	sf |= __CONCAT(SVR4_I,a)
53
54static int
55bsd_to_svr4_flags(bf)
56	int bf;
57{
58	int sf = 0;
59	bsd_to_svr4_flag(FF_UP);
60	bsd_to_svr4_flag(FF_BROADCAST);
61	bsd_to_svr4_flag(FF_DEBUG);
62	bsd_to_svr4_flag(FF_LOOPBACK);
63	bsd_to_svr4_flag(FF_POINTOPOINT);
64#if defined(IFF_NOTRAILERS)
65	bsd_to_svr4_flag(FF_NOTRAILERS);
66#endif
67	if (bf & IFF_DRV_RUNNING)
68		sf |= SVR4_IFF_RUNNING;
69	bsd_to_svr4_flag(FF_NOARP);
70	bsd_to_svr4_flag(FF_PROMISC);
71	bsd_to_svr4_flag(FF_ALLMULTI);
72	bsd_to_svr4_flag(FF_MULTICAST);
73	return sf;
74}
75
76int
77svr4_sock_ioctl(fp, td, retval, fd, cmd, data)
78	struct file *fp;
79	struct thread *td;
80	register_t *retval;
81	int fd;
82	u_long cmd;
83	caddr_t data;
84{
85	int error;
86
87	*retval = 0;
88
89	switch (cmd) {
90	case SVR4_SIOCGIFNUM:
91		{
92			INIT_VNET_NET(curvnet);
93			struct ifnet *ifp;
94			struct ifaddr *ifa;
95			int ifnum = 0;
96
97			/*
98			 * This does not return the number of physical
99			 * interfaces (if_index), but the number of interfaces
100			 * + addresses like ifconf() does, because this number
101			 * is used by code that will call SVR4_SIOCGIFCONF to
102			 * find the space needed for SVR4_SIOCGIFCONF. So we
103			 * count the number of ifreq entries that the next
104			 * SVR4_SIOCGIFCONF will return. Maybe a more correct
105			 * fix is to make SVR4_SIOCGIFCONF return only one
106			 * entry per physical interface?
107			 */
108			IFNET_RLOCK();
109			TAILQ_FOREACH(ifp, &V_ifnet, if_link)
110				if (TAILQ_EMPTY(&ifp->if_addrhead))
111					ifnum++;
112				else
113					TAILQ_FOREACH(ifa, &ifp->if_addrhead,
114					    ifa_link)
115						ifnum++;
116			IFNET_RUNLOCK();
117			DPRINTF(("SIOCGIFNUM %d\n", ifnum));
118			return copyout(&ifnum, data, sizeof(ifnum));
119		}
120
121	case SVR4_SIOCGIFFLAGS:
122		{
123			struct ifreq br;
124			struct svr4_ifreq sr;
125
126			if ((error = copyin(data, &sr, sizeof(sr))) != 0)
127				return error;
128
129			(void) strlcpy(br.ifr_name, sr.svr4_ifr_name,
130			    sizeof(br.ifr_name));
131			if ((error = fo_ioctl(fp, SIOCGIFFLAGS,
132					    (caddr_t) &br, td->td_ucred,
133					    td)) != 0) {
134				DPRINTF(("SIOCGIFFLAGS (%s) %s: error %d\n",
135					 br.ifr_name, sr.svr4_ifr_name, error));
136				return error;
137			}
138
139			sr.svr4_ifr_flags = bsd_to_svr4_flags(br.ifr_flags);
140			DPRINTF(("SIOCGIFFLAGS %s = %x\n",
141				sr.svr4_ifr_name, sr.svr4_ifr_flags));
142			return copyout(&sr, data, sizeof(sr));
143		}
144
145	case SVR4_SIOCGIFCONF:
146		{
147			struct svr4_ifconf sc;
148
149			if ((error = copyin(data, &sc, sizeof(sc))) != 0)
150				return error;
151
152			DPRINTF(("ifreq %d svr4_ifreq %d ifc_len %d\n",
153				sizeof(struct ifreq), sizeof(struct svr4_ifreq),
154				sc.svr4_ifc_len));
155
156			if ((error = fo_ioctl(fp, OSIOCGIFCONF,
157					    (caddr_t) &sc, td->td_ucred,
158					    td)) != 0)
159				return error;
160
161			DPRINTF(("SIOCGIFCONF\n"));
162			return 0;
163		}
164
165
166	default:
167		DPRINTF(("Unknown svr4 sockio %lx\n", cmd));
168		return 0;	/* ENOSYS really */
169	}
170}
171