unix.c revision 38185 
1/*-
2 * Copyright (c) 1983, 1988, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#ifndef lint
35#if 0
36static char sccsid[] = "@(#)unix.c	8.1 (Berkeley) 6/6/93";
37#endif
38static const char rcsid[] =
39	"$Id: unix.c,v 1.9 1998/07/06 21:01:27 bde Exp $";
40#endif /* not lint */
41
42/*
43 * Display protocol blocks in the unix domain.
44 */
45#include <sys/param.h>
46#include <sys/queue.h>
47#include <sys/protosw.h>
48#include <sys/socket.h>
49#include <sys/socketvar.h>
50#include <sys/mbuf.h>
51#include <sys/sysctl.h>
52#include <sys/un.h>
53#include <sys/unpcb.h>
54
55#include <netinet/in.h>
56
57#include <errno.h>
58#include <err.h>
59#include <stddef.h>
60#include <stdio.h>
61#include <stdlib.h>
62#include <kvm.h>
63#include "netstat.h"
64
65static	void unixdomainpr __P((struct xunpcb *, struct xsocket *));
66
67static	const char *const socktype[] =
68    { "#0", "stream", "dgram", "raw", "rdm", "seqpacket" };
69
70void
71unixpr()
72{
73	char 	*buf;
74	int	type;
75	size_t	len;
76	struct	xsocket *so;
77	struct	xunpgen *xug, *oxug;
78	struct	xunpcb *xunp;
79	char mibvar[sizeof "net.local.seqpacket.pcblist"];
80
81	for (type = SOCK_STREAM; type < SOCK_SEQPACKET; type++) {
82		sprintf(mibvar, "net.local.%s.pcblist", socktype[type]);
83
84		len = 0;
85		if (sysctlbyname(mibvar, 0, &len, 0, 0) < 0) {
86			if (errno != ENOENT)
87				warn("sysctl: %s", mibvar);
88			continue;
89		}
90		if ((buf = malloc(len)) == 0) {
91			warn("malloc %lu bytes", (u_long)len);
92			return;
93		}
94		if (sysctlbyname(mibvar, buf, &len, 0, 0) < 0) {
95			warn("sysctl: %s", mibvar);
96			free(buf);
97			return;
98		}
99
100		oxug = xug = (struct xunpgen *)buf;
101		for (xug = (struct xunpgen *)((char *)xug + xug->xug_len);
102		     xug->xug_len > sizeof(struct xunpgen);
103		     xug = (struct xunpgen *)((char *)xug + xug->xug_len)) {
104			xunp = (struct xunpcb *)xug;
105			so = &xunp->xu_socket;
106
107			/* Ignore PCBs which were freed during copyout. */
108			if (xunp->xu_unp.unp_gencnt > oxug->xug_gen)
109				continue;
110			unixdomainpr(xunp, so);
111		}
112		if (xug != oxug && xug->xug_gen != oxug->xug_gen) {
113			if (oxug->xug_count > xug->xug_count) {
114				printf("Some %s sockets may have been deleted.\n",
115				       socktype[type]);
116			} else if (oxug->xug_count < xug->xug_count) {
117				printf("Some %s sockets may have been created.\n",
118			       socktype[type]);
119			} else {
120				printf("Some %s sockets may have been created or deleted",
121			       socktype[type]);
122			}
123		}
124		free(buf);
125	}
126}
127
128static void
129unixdomainpr(xunp, so)
130	struct xunpcb *xunp;
131	struct xsocket *so;
132{
133	struct unpcb *unp;
134	struct sockaddr_un *sa;
135	static int first = 1;
136
137	unp = &xunp->xu_unp;
138	if (unp->unp_addr)
139		sa = &xunp->xu_addr;
140	else
141		sa = (struct sockaddr_un *)0;
142
143	if (first) {
144		printf("Active UNIX domain sockets\n");
145		printf(
146"%-8.8s %-6.6s %-6.6s %-6.6s %8.8s %8.8s %8.8s %8.8s Addr\n",
147		    "Address", "Type", "Recv-Q", "Send-Q",
148		    "Inode", "Conn", "Refs", "Nextref");
149		first = 0;
150	}
151	printf("%8lx %-6.6s %6ld %6ld %8lx %8lx %8lx %8lx",
152	       (long)so->so_pcb, socktype[so->so_type], so->so_rcv.sb_cc,
153	       so->so_snd.sb_cc,
154	       (long)unp->unp_vnode, (long)unp->unp_conn,
155	       (long)unp->unp_refs.lh_first, (long)unp->unp_reflink.le_next);
156	if (sa)
157		printf(" %.*s",
158		    (int)(sa->sun_len - offsetof(struct sockaddr_un, sun_path)),
159		    sa->sun_path);
160	putchar('\n');
161}
162