66dfcc8533
The port forces the use of sysctl(7), as obtaining information through KVM is not and will never be viable. The sysctl mode of netstat(1) is currently somewhat limited and buggy, though. We fix a few minimal issues, but more improvements will have to come from NetBSD reimports. Some of netstat(1)'s views are currently not supported by the operating system. Later improvements on this point will not require changes to the imported code, though. Change-Id: If74a6811f0fc81bd1ecc31010a28379b14b2a0eb
232 lines
6.6 KiB
C
232 lines
6.6 KiB
C
/* $NetBSD: unix.c,v 1.34 2012/03/20 20:34:58 matt 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 1.34 2012/03/20 20:34:58 matt 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 _KERNEL
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#include <sys/file.h>
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#undef _KERNEL
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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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