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unix.c revision 1.11 
      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 /*static char sccsid[] = "from: @(#)unix.c	8.1 (Berkeley) 6/6/93";*/
     36 static char *rcsid = "$Id: unix.c,v 1.11 1994/11/02 09:20:33 deraadt Exp $";
     37 #endif /* not lint */
     38 
     39 /*
     40  * Display protocol blocks in the unix domain.
     41  */
     42 #include <sys/param.h>
     43 #include <sys/protosw.h>
     44 #include <sys/socket.h>
     45 #include <sys/socketvar.h>
     46 #include <sys/mbuf.h>
     47 #include <sys/sysctl.h>
     48 #include <sys/un.h>
     49 #include <sys/unpcb.h>
     50 #define KERNEL
     51 struct uio;
     52 struct proc;
     53 #include <sys/file.h>
     54 
     55 #include <netinet/in.h>
     56 
     57 #include <stdio.h>
     58 #include <stdlib.h>
     59 #include <kvm.h>
     60 #include "netstat.h"
     61 
     62 static	void unixdomainpr __P((struct socket *, caddr_t));
     63 
     64 static struct	file *file, *fileNFILE;
     65 static int	nfiles;
     66 extern	kvm_t *kvmd;
     67 
     68 void
     69 unixpr(off)
     70 	u_long	off;
     71 {
     72 	register struct file *fp;
     73 	struct socket sock, *so = &sock;
     74 	char *filebuf;
     75 	struct protosw *unixsw = (struct protosw *)off;
     76 
     77 	filebuf = (char *)kvm_getfiles(kvmd, KERN_FILE, 0, &nfiles);
     78 	if (filebuf == 0) {
     79 		printf("Out of memory (file table).\n");
     80 		return;
     81 	}
     82 	file = (struct file *)(filebuf + sizeof(fp));
     83 	fileNFILE = file + nfiles;
     84 	for (fp = file; fp < fileNFILE; fp++) {
     85 		if (fp->f_count == 0 || fp->f_type != DTYPE_SOCKET)
     86 			continue;
     87 		if (kread((u_long)fp->f_data, (char *)so, sizeof (*so)))
     88 			continue;
     89 		/* kludge */
     90 		if (so->so_proto >= unixsw && so->so_proto <= unixsw + 2)
     91 			if (so->so_pcb)
     92 				unixdomainpr(so, fp->f_data);
     93 	}
     94 }
     95 
     96 static	char *socktype[] =
     97     { "#0", "stream", "dgram", "raw", "rdm", "seqpacket" };
     98 
     99 static void
    100 unixdomainpr(so, soaddr)
    101 	register struct socket *so;
    102 	caddr_t soaddr;
    103 {
    104 	struct unpcb unpcb, *unp = &unpcb;
    105 	struct mbuf mbuf, *m;
    106 	struct sockaddr_un *sa;
    107 	static int first = 1;
    108 
    109 	if (kread((u_long)so->so_pcb, (char *)unp, sizeof (*unp)))
    110 		return;
    111 	if (unp->unp_addr) {
    112 		m = &mbuf;
    113 		if (kread((u_long)unp->unp_addr, (char *)m, sizeof (*m)))
    114 			m = (struct mbuf *)0;
    115 		sa = (struct sockaddr_un *)(m->m_dat);
    116 	} else
    117 		m = (struct mbuf *)0;
    118 	if (first) {
    119 		printf("Active UNIX domain sockets\n");
    120 		printf(
    121 "%-8.8s %-6.6s %-6.6s %-6.6s %8.8s %8.8s %8.8s %8.8s Addr\n",
    122 		    "Address", "Type", "Recv-Q", "Send-Q",
    123 		    "Inode", "Conn", "Refs", "Nextref");
    124 		first = 0;
    125 	}
    126 	printf("%8x %-6.6s %6d %6d %8x %8x %8x %8x",
    127 	    soaddr, socktype[so->so_type], so->so_rcv.sb_cc, so->so_snd.sb_cc,
    128 	    unp->unp_vnode, unp->unp_conn,
    129 	    unp->unp_refs, unp->unp_nextref);
    130 	if (m)
    131 		printf(" %.*s",
    132 		    m->m_len - (int)(sizeof(*sa) - sizeof(sa->sun_path)),
    133 		    sa->sun_path);
    134 	putchar('\n');
    135 }
    136