xref: /minix3/usr.bin/netstat/unix.c (revision 66dfcc8533c70ea68511edc95c03189c8eb0a7a2)
1*66dfcc85SDavid van Moolenbroek /*	$NetBSD: unix.c,v 1.34 2012/03/20 20:34:58 matt Exp $	*/
2*66dfcc85SDavid van Moolenbroek 
3*66dfcc85SDavid van Moolenbroek /*-
4*66dfcc85SDavid van Moolenbroek  * Copyright (c) 1983, 1988, 1993
5*66dfcc85SDavid van Moolenbroek  *	The Regents of the University of California.  All rights reserved.
6*66dfcc85SDavid van Moolenbroek  *
7*66dfcc85SDavid van Moolenbroek  * Redistribution and use in source and binary forms, with or without
8*66dfcc85SDavid van Moolenbroek  * modification, are permitted provided that the following conditions
9*66dfcc85SDavid van Moolenbroek  * are met:
10*66dfcc85SDavid van Moolenbroek  * 1. Redistributions of source code must retain the above copyright
11*66dfcc85SDavid van Moolenbroek  *    notice, this list of conditions and the following disclaimer.
12*66dfcc85SDavid van Moolenbroek  * 2. Redistributions in binary form must reproduce the above copyright
13*66dfcc85SDavid van Moolenbroek  *    notice, this list of conditions and the following disclaimer in the
14*66dfcc85SDavid van Moolenbroek  *    documentation and/or other materials provided with the distribution.
15*66dfcc85SDavid van Moolenbroek  * 3. Neither the name of the University nor the names of its contributors
16*66dfcc85SDavid van Moolenbroek  *    may be used to endorse or promote products derived from this software
17*66dfcc85SDavid van Moolenbroek  *    without specific prior written permission.
18*66dfcc85SDavid van Moolenbroek  *
19*66dfcc85SDavid van Moolenbroek  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20*66dfcc85SDavid van Moolenbroek  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21*66dfcc85SDavid van Moolenbroek  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22*66dfcc85SDavid van Moolenbroek  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23*66dfcc85SDavid van Moolenbroek  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24*66dfcc85SDavid van Moolenbroek  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25*66dfcc85SDavid van Moolenbroek  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26*66dfcc85SDavid van Moolenbroek  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27*66dfcc85SDavid van Moolenbroek  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28*66dfcc85SDavid van Moolenbroek  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29*66dfcc85SDavid van Moolenbroek  * SUCH DAMAGE.
30*66dfcc85SDavid van Moolenbroek  */
31*66dfcc85SDavid van Moolenbroek 
32*66dfcc85SDavid van Moolenbroek #include <sys/cdefs.h>
33*66dfcc85SDavid van Moolenbroek #ifndef lint
34*66dfcc85SDavid van Moolenbroek #if 0
35*66dfcc85SDavid van Moolenbroek static char sccsid[] = "from: @(#)unix.c	8.1 (Berkeley) 6/6/93";
36*66dfcc85SDavid van Moolenbroek #else
37*66dfcc85SDavid van Moolenbroek __RCSID("$NetBSD: unix.c,v 1.34 2012/03/20 20:34:58 matt Exp $");
38*66dfcc85SDavid van Moolenbroek #endif
39*66dfcc85SDavid van Moolenbroek #endif /* not lint */
40*66dfcc85SDavid van Moolenbroek 
41*66dfcc85SDavid van Moolenbroek /*
42*66dfcc85SDavid van Moolenbroek  * Display protocol blocks in the unix domain.
43*66dfcc85SDavid van Moolenbroek  */
44*66dfcc85SDavid van Moolenbroek #define _KERNEL
45*66dfcc85SDavid van Moolenbroek #include <sys/types.h>
46*66dfcc85SDavid van Moolenbroek #undef _KERNEL
47*66dfcc85SDavid van Moolenbroek #include <sys/param.h>
48*66dfcc85SDavid van Moolenbroek #include <sys/protosw.h>
49*66dfcc85SDavid van Moolenbroek #include <sys/socket.h>
50*66dfcc85SDavid van Moolenbroek #include <sys/socketvar.h>
51*66dfcc85SDavid van Moolenbroek #include <sys/mbuf.h>
52*66dfcc85SDavid van Moolenbroek #include <sys/sysctl.h>
53*66dfcc85SDavid van Moolenbroek #include <sys/un.h>
54*66dfcc85SDavid van Moolenbroek #include <sys/unpcb.h>
55*66dfcc85SDavid van Moolenbroek #define _KERNEL
56*66dfcc85SDavid van Moolenbroek #include <sys/file.h>
57*66dfcc85SDavid van Moolenbroek #undef _KERNEL
58*66dfcc85SDavid van Moolenbroek 
59*66dfcc85SDavid van Moolenbroek #include <netinet/in.h>
60*66dfcc85SDavid van Moolenbroek 
61*66dfcc85SDavid van Moolenbroek #include <stdio.h>
62*66dfcc85SDavid van Moolenbroek #include <stdlib.h>
63*66dfcc85SDavid van Moolenbroek #include <string.h>
64*66dfcc85SDavid van Moolenbroek #include <kvm.h>
65*66dfcc85SDavid van Moolenbroek #include <err.h>
66*66dfcc85SDavid van Moolenbroek #include "netstat.h"
67*66dfcc85SDavid van Moolenbroek #include "prog_ops.h"
68*66dfcc85SDavid van Moolenbroek 
69*66dfcc85SDavid van Moolenbroek static	void unixdomainprhdr(void);
70*66dfcc85SDavid van Moolenbroek static	void unixdomainpr0(u_long, u_long, u_long, u_long, u_long, u_long,
71*66dfcc85SDavid van Moolenbroek 			   u_long, u_long, u_long, struct sockaddr_un *, int);
72*66dfcc85SDavid van Moolenbroek static	void unixdomainpr(struct socket *, void *);
73*66dfcc85SDavid van Moolenbroek 
74*66dfcc85SDavid van Moolenbroek static struct	file *file, *fileNFILE;
75*66dfcc85SDavid van Moolenbroek static int	ns_nfiles;
76*66dfcc85SDavid van Moolenbroek 
77*66dfcc85SDavid van Moolenbroek static void
unixdomainprhdr(void)78*66dfcc85SDavid van Moolenbroek unixdomainprhdr(void)
79*66dfcc85SDavid van Moolenbroek {
80*66dfcc85SDavid van Moolenbroek 	printf("Active UNIX domain sockets\n");
81*66dfcc85SDavid van Moolenbroek 	printf("%-8.8s %-6.6s %-6.6s %-6.6s %8.8s %8.8s %8.8s %8.8s Addr\n",
82*66dfcc85SDavid van Moolenbroek 	       "Address", "Type", "Recv-Q", "Send-Q", "Inode", "Conn", "Refs",
83*66dfcc85SDavid van Moolenbroek 	       "Nextref");
84*66dfcc85SDavid van Moolenbroek }
85*66dfcc85SDavid van Moolenbroek 
86*66dfcc85SDavid van Moolenbroek static	const char * const socktype[] =
87*66dfcc85SDavid van Moolenbroek     { "#0", "stream", "dgram", "raw", "rdm", "seqpacket" };
88*66dfcc85SDavid van Moolenbroek 
89*66dfcc85SDavid van Moolenbroek static void
unixdomainpr0(u_long so_pcb,u_long so_type,u_long rcvq,u_long sndq,u_long inode,u_long conn,u_long refs,u_long nextref,u_long addr,struct sockaddr_un * sun,int remote)90*66dfcc85SDavid van Moolenbroek unixdomainpr0(u_long so_pcb, u_long so_type, u_long rcvq, u_long sndq,
91*66dfcc85SDavid van Moolenbroek 	      u_long inode, u_long conn, u_long refs, u_long nextref,
92*66dfcc85SDavid van Moolenbroek 	      u_long addr, struct sockaddr_un *sun, int remote)
93*66dfcc85SDavid van Moolenbroek {
94*66dfcc85SDavid van Moolenbroek 	printf("%8lx %-6.6s %6ld %6ld %8lx %8lx %8lx %8lx",
95*66dfcc85SDavid van Moolenbroek 	       so_pcb, socktype[so_type], rcvq, sndq, inode, conn, refs,
96*66dfcc85SDavid van Moolenbroek 	       nextref);
97*66dfcc85SDavid van Moolenbroek 	if (addr || remote)
98*66dfcc85SDavid van Moolenbroek 		printf((remote ? " -> %.*s" : " %.*s"),
99*66dfcc85SDavid van Moolenbroek 		       (int)(sun->sun_len - (sizeof(*sun) - sizeof(sun->sun_path))),
100*66dfcc85SDavid van Moolenbroek 		       sun->sun_path);
101*66dfcc85SDavid van Moolenbroek 	putchar('\n');
102*66dfcc85SDavid van Moolenbroek }
103*66dfcc85SDavid van Moolenbroek 
104*66dfcc85SDavid van Moolenbroek static void
unixdomainpr(struct socket * so,void * soaddr)105*66dfcc85SDavid van Moolenbroek unixdomainpr(struct socket *so, void *soaddr)
106*66dfcc85SDavid van Moolenbroek {
107*66dfcc85SDavid van Moolenbroek 	struct unpcb unp, runp;
108*66dfcc85SDavid van Moolenbroek 	struct sockaddr_un sun, rsun;
109*66dfcc85SDavid van Moolenbroek 	static int first = 1;
110*66dfcc85SDavid van Moolenbroek 	int remote = 0;
111*66dfcc85SDavid van Moolenbroek 
112*66dfcc85SDavid van Moolenbroek 	if (kread((u_long)so->so_pcb, (char *)&unp, sizeof (unp)))
113*66dfcc85SDavid van Moolenbroek 		return;
114*66dfcc85SDavid van Moolenbroek 	if (unp.unp_addr)
115*66dfcc85SDavid van Moolenbroek 		if (kread((u_long)unp.unp_addr, (char *)&sun, sizeof (sun)))
116*66dfcc85SDavid van Moolenbroek 			unp.unp_addr = 0;
117*66dfcc85SDavid van Moolenbroek 
118*66dfcc85SDavid van Moolenbroek 	if (!unp.unp_addr) {
119*66dfcc85SDavid van Moolenbroek 		memset(&rsun, 0, sizeof(rsun));
120*66dfcc85SDavid van Moolenbroek 		if (unp.unp_conn &&
121*66dfcc85SDavid van Moolenbroek 		    kread((u_long)unp.unp_conn, (char *)&runp, sizeof (runp)) == 0 &&
122*66dfcc85SDavid van Moolenbroek 		    runp.unp_addr &&
123*66dfcc85SDavid van Moolenbroek 		    kread((u_long)runp.unp_addr, (char *)&rsun, sizeof (rsun)) == 0 &&
124*66dfcc85SDavid van Moolenbroek 		    rsun.sun_path[0] != '\0')
125*66dfcc85SDavid van Moolenbroek 			remote = 1;
126*66dfcc85SDavid van Moolenbroek 	}
127*66dfcc85SDavid van Moolenbroek 
128*66dfcc85SDavid van Moolenbroek 	if (first) {
129*66dfcc85SDavid van Moolenbroek 		unixdomainprhdr();
130*66dfcc85SDavid van Moolenbroek 		first = 0;
131*66dfcc85SDavid van Moolenbroek 	}
132*66dfcc85SDavid van Moolenbroek 
133*66dfcc85SDavid van Moolenbroek 	unixdomainpr0((u_long)so->so_pcb, so->so_type, so->so_rcv.sb_cc,
134*66dfcc85SDavid van Moolenbroek 		      so->so_snd.sb_cc, (u_long)unp.unp_vnode,
135*66dfcc85SDavid van Moolenbroek 		      (u_long)unp.unp_conn, (u_long)unp.unp_refs,
136*66dfcc85SDavid van Moolenbroek 		      (u_long)unp.unp_nextref, (u_long)unp.unp_addr,
137*66dfcc85SDavid van Moolenbroek 		      remote ? &rsun : &sun, remote);
138*66dfcc85SDavid van Moolenbroek }
139*66dfcc85SDavid van Moolenbroek 
140*66dfcc85SDavid van Moolenbroek void
unixpr(u_long off)141*66dfcc85SDavid van Moolenbroek unixpr(u_long off)
142*66dfcc85SDavid van Moolenbroek {
143*66dfcc85SDavid van Moolenbroek 	struct file *fp;
144*66dfcc85SDavid van Moolenbroek 	struct socket sock, *so = &sock;
145*66dfcc85SDavid van Moolenbroek 	char *filebuf;
146*66dfcc85SDavid van Moolenbroek 	struct protosw *unixsw = (struct protosw *)off;
147*66dfcc85SDavid van Moolenbroek 
148*66dfcc85SDavid van Moolenbroek 	if (use_sysctl) {
149*66dfcc85SDavid van Moolenbroek 		struct kinfo_pcb *pcblist;
150*66dfcc85SDavid van Moolenbroek 		int mib[8];
151*66dfcc85SDavid van Moolenbroek 		size_t namelen = 0, size = 0, i;
152*66dfcc85SDavid van Moolenbroek 		const char *mibnames[] = {
153*66dfcc85SDavid van Moolenbroek 			"net.local.stream.pcblist",
154*66dfcc85SDavid van Moolenbroek 			"net.local.dgram.pcblist",
155*66dfcc85SDavid van Moolenbroek 			"net.local.seqpacket.pcblist",
156*66dfcc85SDavid van Moolenbroek 			NULL,
157*66dfcc85SDavid van Moolenbroek 		};
158*66dfcc85SDavid van Moolenbroek 		const char **mibname;
159*66dfcc85SDavid van Moolenbroek 		static int first = 1;
160*66dfcc85SDavid van Moolenbroek 
161*66dfcc85SDavid van Moolenbroek 		for (mibname = mibnames; *mibname; mibname++) {
162*66dfcc85SDavid van Moolenbroek 			memset(mib, 0, sizeof(mib));
163*66dfcc85SDavid van Moolenbroek 
164*66dfcc85SDavid van Moolenbroek 			if (sysctlnametomib(*mibname, mib,
165*66dfcc85SDavid van Moolenbroek 					    &namelen) == -1)
166*66dfcc85SDavid van Moolenbroek 				err(1, "sysctlnametomib: %s", *mibname);
167*66dfcc85SDavid van Moolenbroek 
168*66dfcc85SDavid van Moolenbroek 			if (prog_sysctl(mib, sizeof(mib) / sizeof(*mib),
169*66dfcc85SDavid van Moolenbroek 			    NULL, &size, NULL, 0) == -1)
170*66dfcc85SDavid van Moolenbroek 				err(1, "sysctl (query)");
171*66dfcc85SDavid van Moolenbroek 
172*66dfcc85SDavid van Moolenbroek 			if ((pcblist = malloc(size)) == NULL)
173*66dfcc85SDavid van Moolenbroek 				err(1, "malloc");
174*66dfcc85SDavid van Moolenbroek 			memset(pcblist, 0, size);
175*66dfcc85SDavid van Moolenbroek 
176*66dfcc85SDavid van Moolenbroek 			mib[6] = sizeof(*pcblist);
177*66dfcc85SDavid van Moolenbroek 			mib[7] = size / sizeof(*pcblist);
178*66dfcc85SDavid van Moolenbroek 
179*66dfcc85SDavid van Moolenbroek 			if (prog_sysctl(mib, sizeof(mib) / sizeof(*mib),
180*66dfcc85SDavid van Moolenbroek 					pcblist, &size, NULL, 0) == -1)
181*66dfcc85SDavid van Moolenbroek 				err(1, "sysctl (copy)");
182*66dfcc85SDavid van Moolenbroek 
183*66dfcc85SDavid van Moolenbroek 			for (i = 0; i < size / sizeof(*pcblist); i++) {
184*66dfcc85SDavid van Moolenbroek 				struct kinfo_pcb *ki = &pcblist[i];
185*66dfcc85SDavid van Moolenbroek 				struct sockaddr_un *sun;
186*66dfcc85SDavid van Moolenbroek 				int remote = 0;
187*66dfcc85SDavid van Moolenbroek 
188*66dfcc85SDavid van Moolenbroek 				if (first) {
189*66dfcc85SDavid van Moolenbroek 					unixdomainprhdr();
190*66dfcc85SDavid van Moolenbroek 					first = 0;
191*66dfcc85SDavid van Moolenbroek 				}
192*66dfcc85SDavid van Moolenbroek 
193*66dfcc85SDavid van Moolenbroek 				sun = (struct sockaddr_un *)&ki->ki_dst;
194*66dfcc85SDavid van Moolenbroek 				if (sun->sun_path[0] != '\0') {
195*66dfcc85SDavid van Moolenbroek 					remote = 1;
196*66dfcc85SDavid van Moolenbroek 				} else {
197*66dfcc85SDavid van Moolenbroek 					sun = (struct sockaddr_un *)&ki->ki_src;
198*66dfcc85SDavid van Moolenbroek 				}
199*66dfcc85SDavid van Moolenbroek 
200*66dfcc85SDavid van Moolenbroek 				unixdomainpr0(ki->ki_pcbaddr, ki->ki_type,
201*66dfcc85SDavid van Moolenbroek 					      ki->ki_rcvq, ki->ki_sndq,
202*66dfcc85SDavid van Moolenbroek 					      ki->ki_vnode, ki->ki_conn,
203*66dfcc85SDavid van Moolenbroek 					      ki->ki_refs, ki->ki_nextref,
204*66dfcc85SDavid van Moolenbroek 					      ki->ki_sockaddr, sun, remote);
205*66dfcc85SDavid van Moolenbroek 			}
206*66dfcc85SDavid van Moolenbroek 
207*66dfcc85SDavid van Moolenbroek 			free(pcblist);
208*66dfcc85SDavid van Moolenbroek 		}
209*66dfcc85SDavid van Moolenbroek 
210*66dfcc85SDavid van Moolenbroek 	} else {
211*66dfcc85SDavid van Moolenbroek 		filebuf = (char *)kvm_getfiles(get_kvmd(), KERN_FILE,
212*66dfcc85SDavid van Moolenbroek 					       0, &ns_nfiles);
213*66dfcc85SDavid van Moolenbroek 		if (filebuf == 0) {
214*66dfcc85SDavid van Moolenbroek 			printf("file table read error: %s",
215*66dfcc85SDavid van Moolenbroek 			       kvm_geterr(get_kvmd()));
216*66dfcc85SDavid van Moolenbroek 			return;
217*66dfcc85SDavid van Moolenbroek 		}
218*66dfcc85SDavid van Moolenbroek 		file = (struct file *)(filebuf + sizeof(fp));
219*66dfcc85SDavid van Moolenbroek 		fileNFILE = file + ns_nfiles;
220*66dfcc85SDavid van Moolenbroek 		for (fp = file; fp < fileNFILE; fp++) {
221*66dfcc85SDavid van Moolenbroek 			if (fp->f_count == 0 || fp->f_type != DTYPE_SOCKET)
222*66dfcc85SDavid van Moolenbroek 				continue;
223*66dfcc85SDavid van Moolenbroek 			if (kread((u_long)fp->f_data, (char *)so, sizeof (*so)))
224*66dfcc85SDavid van Moolenbroek 				continue;
225*66dfcc85SDavid van Moolenbroek 			/* kludge */
226*66dfcc85SDavid van Moolenbroek 			if (so->so_proto >= unixsw && so->so_proto <= unixsw + 2)
227*66dfcc85SDavid van Moolenbroek 				if (so->so_pcb)
228*66dfcc85SDavid van Moolenbroek 					unixdomainpr(so, fp->f_data);
229*66dfcc85SDavid van Moolenbroek 		}
230*66dfcc85SDavid van Moolenbroek 	}
231*66dfcc85SDavid van Moolenbroek }
232