232 lines
6.6 KiB
C
232 lines
6.6 KiB
C
/* $NetBSD: unix.c,v 1.35 2017/01/13 04:22:51 christos Exp $ */
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/*-
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* Copyright (c) 1983, 1988, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static char sccsid[] = "from: @(#)unix.c 8.1 (Berkeley) 6/6/93";
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#else
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__RCSID("$NetBSD: unix.c,v 1.35 2017/01/13 04:22:51 christos Exp $");
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#endif
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#endif /* not lint */
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/*
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* Display protocol blocks in the unix domain.
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*/
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#define _KERNEL
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#include <sys/types.h>
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#undef _KERNEL
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#include <sys/param.h>
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#include <sys/protosw.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/mbuf.h>
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#include <sys/sysctl.h>
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#include <sys/un.h>
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#include <sys/unpcb.h>
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#define _KMEMUSER
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#include <sys/file.h>
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#undef _KMEMUSER
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#include <netinet/in.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <kvm.h>
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#include <err.h>
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#include "netstat.h"
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#include "prog_ops.h"
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static void unixdomainprhdr(void);
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static void unixdomainpr0(u_long, u_long, u_long, u_long, u_long, u_long,
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u_long, u_long, u_long, struct sockaddr_un *, int);
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static void unixdomainpr(struct socket *, void *);
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static struct file *file, *fileNFILE;
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static int ns_nfiles;
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static void
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unixdomainprhdr(void)
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{
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printf("Active UNIX domain sockets\n");
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printf("%-8.8s %-6.6s %-6.6s %-6.6s %8.8s %8.8s %8.8s %8.8s Addr\n",
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"Address", "Type", "Recv-Q", "Send-Q", "Inode", "Conn", "Refs",
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"Nextref");
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}
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static const char * const socktype[] =
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{ "#0", "stream", "dgram", "raw", "rdm", "seqpacket" };
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static void
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unixdomainpr0(u_long so_pcb, u_long so_type, u_long rcvq, u_long sndq,
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u_long inode, u_long conn, u_long refs, u_long nextref,
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u_long addr, struct sockaddr_un *sun, int remote)
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{
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printf("%8lx %-6.6s %6ld %6ld %8lx %8lx %8lx %8lx",
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so_pcb, socktype[so_type], rcvq, sndq, inode, conn, refs,
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nextref);
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if (addr || remote)
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printf((remote ? " -> %.*s" : " %.*s"),
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(int)(sun->sun_len - (sizeof(*sun) - sizeof(sun->sun_path))),
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sun->sun_path);
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putchar('\n');
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}
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static void
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unixdomainpr(struct socket *so, void *soaddr)
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{
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struct unpcb unp, runp;
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struct sockaddr_un sun, rsun;
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static int first = 1;
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int remote = 0;
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if (kread((u_long)so->so_pcb, (char *)&unp, sizeof (unp)))
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return;
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if (unp.unp_addr)
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if (kread((u_long)unp.unp_addr, (char *)&sun, sizeof (sun)))
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unp.unp_addr = 0;
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if (!unp.unp_addr) {
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memset(&rsun, 0, sizeof(rsun));
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if (unp.unp_conn &&
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kread((u_long)unp.unp_conn, (char *)&runp, sizeof (runp)) == 0 &&
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runp.unp_addr &&
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kread((u_long)runp.unp_addr, (char *)&rsun, sizeof (rsun)) == 0 &&
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rsun.sun_path[0] != '\0')
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remote = 1;
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}
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if (first) {
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unixdomainprhdr();
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first = 0;
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}
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unixdomainpr0((u_long)so->so_pcb, so->so_type, so->so_rcv.sb_cc,
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so->so_snd.sb_cc, (u_long)unp.unp_vnode,
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(u_long)unp.unp_conn, (u_long)unp.unp_refs,
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(u_long)unp.unp_nextref, (u_long)unp.unp_addr,
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remote ? &rsun : &sun, remote);
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}
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void
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unixpr(u_long off)
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{
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struct file *fp;
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struct socket sock, *so = &sock;
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char *filebuf;
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struct protosw *unixsw = (struct protosw *)off;
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if (use_sysctl) {
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struct kinfo_pcb *pcblist;
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int mib[8];
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size_t namelen = 0, size = 0, i;
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const char *mibnames[] = {
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"net.local.stream.pcblist",
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"net.local.dgram.pcblist",
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"net.local.seqpacket.pcblist",
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NULL,
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};
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const char **mibname;
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static int first = 1;
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for (mibname = mibnames; *mibname; mibname++) {
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memset(mib, 0, sizeof(mib));
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if (sysctlnametomib(*mibname, mib,
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&namelen) == -1)
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err(1, "sysctlnametomib: %s", *mibname);
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if (prog_sysctl(mib, sizeof(mib) / sizeof(*mib),
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NULL, &size, NULL, 0) == -1)
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err(1, "sysctl (query)");
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if ((pcblist = malloc(size)) == NULL)
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err(1, "malloc");
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memset(pcblist, 0, size);
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mib[6] = sizeof(*pcblist);
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mib[7] = size / sizeof(*pcblist);
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if (prog_sysctl(mib, sizeof(mib) / sizeof(*mib),
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pcblist, &size, NULL, 0) == -1)
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err(1, "sysctl (copy)");
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for (i = 0; i < size / sizeof(*pcblist); i++) {
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struct kinfo_pcb *ki = &pcblist[i];
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struct sockaddr_un *sun;
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int remote = 0;
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if (first) {
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unixdomainprhdr();
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first = 0;
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}
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sun = (struct sockaddr_un *)&ki->ki_dst;
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if (sun->sun_path[0] != '\0') {
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remote = 1;
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} else {
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sun = (struct sockaddr_un *)&ki->ki_src;
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}
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unixdomainpr0(ki->ki_pcbaddr, ki->ki_type,
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ki->ki_rcvq, ki->ki_sndq,
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ki->ki_vnode, ki->ki_conn,
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ki->ki_refs, ki->ki_nextref,
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ki->ki_sockaddr, sun, remote);
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}
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free(pcblist);
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}
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} else {
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filebuf = (char *)kvm_getfiles(get_kvmd(), KERN_FILE,
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0, &ns_nfiles);
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if (filebuf == 0) {
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printf("file table read error: %s",
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kvm_geterr(get_kvmd()));
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return;
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}
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file = (struct file *)(filebuf + sizeof(fp));
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fileNFILE = file + ns_nfiles;
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for (fp = file; fp < fileNFILE; fp++) {
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if (fp->f_count == 0 || fp->f_type != DTYPE_SOCKET)
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continue;
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if (kread((u_long)fp->f_data, (char *)so, sizeof (*so)))
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continue;
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/* kludge */
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if (so->so_proto >= unixsw && so->so_proto <= unixsw + 2)
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if (so->so_pcb)
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unixdomainpr(so, fp->f_data);
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}
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}
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}
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