svr4_sockio.c revision 83366 
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 * $FreeBSD: head/sys/compat/svr4/svr4_sockio.c 83366 2001-09-12 08:38:13Z julian $
29 */
30
31#include <sys/param.h>
32#include <sys/proc.h>
33#include <sys/systm.h>
34#include <sys/file.h>
35#include <sys/filedesc.h>
36#include <sys/sockio.h>
37#include <sys/socket.h>
38#include <net/if.h>
39
40
41#include <compat/svr4/svr4.h>
42#include <compat/svr4/svr4_util.h>
43#include <compat/svr4/svr4_ioctl.h>
44#include <compat/svr4/svr4_sockio.h>
45
46static int bsd_to_svr4_flags __P((int));
47
48#define bsd_to_svr4_flag(a) \
49	if (bf & __CONCAT(I,a))	sf |= __CONCAT(SVR4_I,a)
50
51static int
52bsd_to_svr4_flags(bf)
53	int bf;
54{
55	int sf = 0;
56	bsd_to_svr4_flag(FF_UP);
57	bsd_to_svr4_flag(FF_BROADCAST);
58	bsd_to_svr4_flag(FF_DEBUG);
59	bsd_to_svr4_flag(FF_LOOPBACK);
60	bsd_to_svr4_flag(FF_POINTOPOINT);
61#if defined(IFF_NOTRAILERS)
62	bsd_to_svr4_flag(FF_NOTRAILERS);
63#endif
64	bsd_to_svr4_flag(FF_RUNNING);
65	bsd_to_svr4_flag(FF_NOARP);
66	bsd_to_svr4_flag(FF_PROMISC);
67	bsd_to_svr4_flag(FF_ALLMULTI);
68	bsd_to_svr4_flag(FF_MULTICAST);
69	return sf;
70}
71
72int
73svr4_sock_ioctl(fp, td, retval, fd, cmd, data)
74	struct file *fp;
75	struct thread *td;
76	register_t *retval;
77	int fd;
78	u_long cmd;
79	caddr_t data;
80{
81	int error;
82
83	*retval = 0;
84
85	switch (cmd) {
86	case SVR4_SIOCGIFNUM:
87		{
88			struct ifnet *ifp;
89			struct ifaddr *ifa;
90			int ifnum = 0;
91
92			/*
93			 * This does not return the number of physical
94			 * interfaces (if_index), but the number of interfaces
95			 * + addresses like ifconf() does, because this number
96			 * is used by code that will call SVR4_SIOCGIFCONF to
97			 * find the space needed for SVR4_SIOCGIFCONF. So we
98			 * count the number of ifreq entries that the next
99			 * SVR4_SIOCGIFCONF will return. Maybe a more correct
100			 * fix is to make SVR4_SIOCGIFCONF return only one
101			 * entry per physical interface?
102			 */
103
104			TAILQ_FOREACH(ifp, &ifnet, if_link)
105				if (TAILQ_FIRST(&ifp->if_addrhead) == NULL)
106					ifnum++;
107				else
108					TAILQ_FOREACH(ifa, &ifp->if_addrhead,
109					    ifa_link)
110						ifnum++;
111
112
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) strncpy(br.ifr_name, sr.svr4_ifr_name,
126			    sizeof(br.ifr_name));
127			if ((error = fo_ioctl(fp, SIOCGIFFLAGS,
128					    (caddr_t) &br, td)) != 0) {
129				DPRINTF(("SIOCGIFFLAGS (%s) %s: error %d\n",
130					 br.ifr_name, sr.svr4_ifr_name, error));
131				return error;
132			}
133
134			sr.svr4_ifr_flags = bsd_to_svr4_flags(br.ifr_flags);
135			DPRINTF(("SIOCGIFFLAGS %s = %x\n",
136				sr.svr4_ifr_name, sr.svr4_ifr_flags));
137			return copyout(&sr, data, sizeof(sr));
138		}
139
140	case SVR4_SIOCGIFCONF:
141		{
142			struct svr4_ifconf sc;
143
144			if ((error = copyin(data, &sc, sizeof(sc))) != 0)
145				return error;
146
147			DPRINTF(("ifreq %d svr4_ifreq %d ifc_len %d\n",
148				sizeof(struct ifreq), sizeof(struct svr4_ifreq),
149				sc.svr4_ifc_len));
150
151			if ((error = fo_ioctl(fp, OSIOCGIFCONF,
152					    (caddr_t) &sc, td)) != 0)
153				return error;
154
155			DPRINTF(("SIOCGIFCONF\n"));
156			return 0;
157		}
158
159
160	default:
161		DPRINTF(("Unknown svr4 sockio %lx\n", cmd));
162		return 0;	/* ENOSYS really */
163	}
164}
165