11590Srgrimes/*- 21590Srgrimes * Copyright (c) 1983, 1988, 1993 31590Srgrimes * The Regents of the University of California. All rights reserved. 41590Srgrimes * 51590Srgrimes * Redistribution and use in source and binary forms, with or without 61590Srgrimes * modification, are permitted provided that the following conditions 71590Srgrimes * are met: 81590Srgrimes * 1. Redistributions of source code must retain the above copyright 91590Srgrimes * notice, this list of conditions and the following disclaimer. 101590Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111590Srgrimes * notice, this list of conditions and the following disclaimer in the 121590Srgrimes * documentation and/or other materials provided with the distribution. 131590Srgrimes * 4. Neither the name of the University nor the names of its contributors 141590Srgrimes * may be used to endorse or promote products derived from this software 151590Srgrimes * without specific prior written permission. 161590Srgrimes * 171590Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 181590Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 191590Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 201590Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 211590Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 221590Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 231590Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 241590Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 251590Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 261590Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 271590Srgrimes * SUCH DAMAGE. 281590Srgrimes */ 291590Srgrimes 30132671Scharnier#if 0 311590Srgrimes#ifndef lint 321590Srgrimesstatic char sccsid[] = "@(#)unix.c 8.1 (Berkeley) 6/6/93"; 33132671Scharnier#endif /* not lint */ 3427753Scharnier#endif 351590Srgrimes 36132671Scharnier#include <sys/cdefs.h> 37132671Scharnier__FBSDID("$FreeBSD: releng/11.0/usr.bin/netstat/unix.c 298182 2016-04-18 05:46:18Z araujo $"); 38132671Scharnier 391590Srgrimes/* 401590Srgrimes * Display protocol blocks in the unix domain. 411590Srgrimes */ 421590Srgrimes#include <sys/param.h> 4314543Sdg#include <sys/queue.h> 441590Srgrimes#include <sys/protosw.h> 451590Srgrimes#include <sys/socket.h> 461590Srgrimes#include <sys/socketvar.h> 471590Srgrimes#include <sys/mbuf.h> 481590Srgrimes#include <sys/sysctl.h> 491590Srgrimes#include <sys/un.h> 501590Srgrimes#include <sys/unpcb.h> 511590Srgrimes 521590Srgrimes#include <netinet/in.h> 531590Srgrimes 5436080Swollman#include <errno.h> 5538185Sphk#include <err.h> 5636103Swollman#include <stddef.h> 57160787Syar#include <stdint.h> 581590Srgrimes#include <stdio.h> 591590Srgrimes#include <stdlib.h> 60279122Smarcel#include <stdbool.h> 61171465Sjhb#include <strings.h> 6236080Swollman#include <kvm.h> 63279122Smarcel#include <libxo/xo.h> 641590Srgrimes#include "netstat.h" 651590Srgrimes 66175061Sobrienstatic void unixdomainpr(struct xunpcb *, struct xsocket *); 671590Srgrimes 6836080Swollmanstatic const char *const socktype[] = 6936080Swollman { "#0", "stream", "dgram", "raw", "rdm", "seqpacket" }; 701590Srgrimes 71171465Sjhbstatic int 72171465Sjhbpcblist_sysctl(int type, char **bufp) 73171465Sjhb{ 74171465Sjhb char *buf; 75171465Sjhb size_t len; 76171465Sjhb char mibvar[sizeof "net.local.seqpacket.pcblist"]; 77171465Sjhb 78171465Sjhb sprintf(mibvar, "net.local.%s.pcblist", socktype[type]); 79171465Sjhb 80171465Sjhb len = 0; 81171465Sjhb if (sysctlbyname(mibvar, 0, &len, 0, 0) < 0) { 82171465Sjhb if (errno != ENOENT) 83279122Smarcel xo_warn("sysctl: %s", mibvar); 84171465Sjhb return (-1); 85171465Sjhb } 86298182Saraujo if ((buf = malloc(len)) == NULL) { 87279122Smarcel xo_warnx("malloc %lu bytes", (u_long)len); 88171465Sjhb return (-2); 89171465Sjhb } 90171465Sjhb if (sysctlbyname(mibvar, buf, &len, 0, 0) < 0) { 91279122Smarcel xo_warn("sysctl: %s", mibvar); 92171465Sjhb free(buf); 93171465Sjhb return (-2); 94171465Sjhb } 95171465Sjhb *bufp = buf; 96171465Sjhb return (0); 97171465Sjhb} 98171465Sjhb 99171465Sjhbstatic int 100171465Sjhbpcblist_kvm(u_long count_off, u_long gencnt_off, u_long head_off, char **bufp) 101171465Sjhb{ 102171465Sjhb struct unp_head head; 103171465Sjhb struct unpcb *unp, unp_conn; 104171465Sjhb u_char sun_len; 105171465Sjhb struct socket so; 106171465Sjhb struct xunpgen xug; 107171465Sjhb struct xunpcb xu; 108171465Sjhb unp_gen_t unp_gencnt; 109171465Sjhb u_int unp_count; 110171465Sjhb char *buf, *p; 111171465Sjhb size_t len; 112171465Sjhb 113171465Sjhb if (count_off == 0 || gencnt_off == 0) 114171465Sjhb return (-2); 115171465Sjhb if (head_off == 0) 116171465Sjhb return (-1); 117171465Sjhb kread(count_off, &unp_count, sizeof(unp_count)); 118171465Sjhb len = 2 * sizeof(xug) + (unp_count + unp_count / 8) * sizeof(xu); 119298182Saraujo if ((buf = malloc(len)) == NULL) { 120279122Smarcel xo_warnx("malloc %lu bytes", (u_long)len); 121171465Sjhb return (-2); 122171465Sjhb } 123171465Sjhb p = buf; 124171465Sjhb 125175061Sobrien#define COPYOUT(obj, size) do { \ 126171465Sjhb if (len < (size)) { \ 127279122Smarcel xo_warnx("buffer size exceeded"); \ 128171465Sjhb goto fail; \ 129171465Sjhb } \ 130171465Sjhb bcopy((obj), p, (size)); \ 131171465Sjhb len -= (size); \ 132171465Sjhb p += (size); \ 133171465Sjhb} while (0) 134171465Sjhb 135175061Sobrien#define KREAD(off, buf, len) do { \ 136171465Sjhb if (kread((uintptr_t)(off), (buf), (len)) != 0) \ 137171465Sjhb goto fail; \ 138171465Sjhb} while (0) 139171465Sjhb 140171465Sjhb /* Write out header. */ 141171465Sjhb kread(gencnt_off, &unp_gencnt, sizeof(unp_gencnt)); 142171465Sjhb xug.xug_len = sizeof xug; 143171465Sjhb xug.xug_count = unp_count; 144171465Sjhb xug.xug_gen = unp_gencnt; 145171465Sjhb xug.xug_sogen = 0; 146171465Sjhb COPYOUT(&xug, sizeof xug); 147171465Sjhb 148171465Sjhb /* Walk the PCB list. */ 149171465Sjhb xu.xu_len = sizeof xu; 150171465Sjhb KREAD(head_off, &head, sizeof(head)); 151171465Sjhb LIST_FOREACH(unp, &head, unp_link) { 152171465Sjhb xu.xu_unpp = unp; 153171465Sjhb KREAD(unp, &xu.xu_unp, sizeof (*unp)); 154171465Sjhb unp = &xu.xu_unp; 155171465Sjhb 156171465Sjhb if (unp->unp_gencnt > unp_gencnt) 157171465Sjhb continue; 158171465Sjhb if (unp->unp_addr != NULL) { 159171465Sjhb KREAD(unp->unp_addr, &sun_len, sizeof(sun_len)); 160171465Sjhb KREAD(unp->unp_addr, &xu.xu_addr, sun_len); 161171465Sjhb } 162171465Sjhb if (unp->unp_conn != NULL) { 163171465Sjhb KREAD(unp->unp_conn, &unp_conn, sizeof(unp_conn)); 164171465Sjhb if (unp_conn.unp_addr != NULL) { 165171465Sjhb KREAD(unp_conn.unp_addr, &sun_len, 166171465Sjhb sizeof(sun_len)); 167171465Sjhb KREAD(unp_conn.unp_addr, &xu.xu_caddr, sun_len); 168171465Sjhb } 169171465Sjhb } 170171465Sjhb KREAD(unp->unp_socket, &so, sizeof(so)); 171171465Sjhb if (sotoxsocket(&so, &xu.xu_socket) != 0) 172171465Sjhb goto fail; 173171465Sjhb COPYOUT(&xu, sizeof(xu)); 174171465Sjhb } 175171465Sjhb 176171465Sjhb /* Reread the counts and write the footer. */ 177171465Sjhb kread(count_off, &unp_count, sizeof(unp_count)); 178171465Sjhb kread(gencnt_off, &unp_gencnt, sizeof(unp_gencnt)); 179171465Sjhb xug.xug_count = unp_count; 180171465Sjhb xug.xug_gen = unp_gencnt; 181171465Sjhb COPYOUT(&xug, sizeof xug); 182171465Sjhb 183171465Sjhb *bufp = buf; 184171465Sjhb return (0); 185171465Sjhb 186171465Sjhbfail: 187171465Sjhb free(buf); 188171465Sjhb return (-1); 189171465Sjhb#undef COPYOUT 190171465Sjhb#undef KREAD 191171465Sjhb} 192171465Sjhb 1931590Srgrimesvoid 194197777Srwatsonunixpr(u_long count_off, u_long gencnt_off, u_long dhead_off, u_long shead_off, 195279122Smarcel u_long sphead_off, bool *first) 1961590Srgrimes{ 19736080Swollman char *buf; 198171465Sjhb int ret, type; 19936080Swollman struct xsocket *so; 20036080Swollman struct xunpgen *xug, *oxug; 20136080Swollman struct xunpcb *xunp; 202197777Srwatson u_long head_off; 2031590Srgrimes 204246988Scharnier buf = NULL; 20544091Sfenner for (type = SOCK_STREAM; type <= SOCK_SEQPACKET; type++) { 206171465Sjhb if (live) 207171465Sjhb ret = pcblist_sysctl(type, &buf); 208197777Srwatson else { 209197777Srwatson head_off = 0; 210197777Srwatson switch (type) { 211197777Srwatson case SOCK_STREAM: 212197777Srwatson head_off = shead_off; 213197777Srwatson break; 214197777Srwatson 215197777Srwatson case SOCK_DGRAM: 216197777Srwatson head_off = dhead_off; 217197777Srwatson break; 218197777Srwatson 219197777Srwatson case SOCK_SEQPACKET: 220197777Srwatson head_off = sphead_off; 221197777Srwatson break; 222197777Srwatson } 223197777Srwatson ret = pcblist_kvm(count_off, gencnt_off, head_off, 224197777Srwatson &buf); 225197777Srwatson } 226171465Sjhb if (ret == -1) 2271590Srgrimes continue; 228171465Sjhb if (ret < 0) 22936080Swollman return; 23036080Swollman 23136080Swollman oxug = xug = (struct xunpgen *)buf; 23236080Swollman for (xug = (struct xunpgen *)((char *)xug + xug->xug_len); 233279122Smarcel xug->xug_len > sizeof(struct xunpgen); 234279122Smarcel xug = (struct xunpgen *)((char *)xug + xug->xug_len)) { 23536080Swollman xunp = (struct xunpcb *)xug; 23636080Swollman so = &xunp->xu_socket; 23736080Swollman 23836080Swollman /* Ignore PCBs which were freed during copyout. */ 23936080Swollman if (xunp->xu_unp.unp_gencnt > oxug->xug_gen) 24036080Swollman continue; 241279122Smarcel if (*first) { 242279122Smarcel xo_open_list("socket"); 243279122Smarcel *first = false; 244279122Smarcel } 245279122Smarcel xo_open_instance("socket"); 24636080Swollman unixdomainpr(xunp, so); 247279122Smarcel xo_close_instance("socket"); 24836080Swollman } 24936080Swollman if (xug != oxug && xug->xug_gen != oxug->xug_gen) { 25036080Swollman if (oxug->xug_count > xug->xug_count) { 251279122Smarcel xo_emit("Some {:type/%s} sockets may have " 252279122Smarcel "been {:action/deleted}.\n", 253279122Smarcel socktype[type]); 25436080Swollman } else if (oxug->xug_count < xug->xug_count) { 255279122Smarcel xo_emit("Some {:type/%s} sockets may have " 256279122Smarcel "been {:action/created}.\n", 257279122Smarcel socktype[type]); 25836080Swollman } else { 259279122Smarcel xo_emit("Some {:type/%s} sockets may have " 260279122Smarcel "been {:action/created or deleted}", 261279122Smarcel socktype[type]); 26236080Swollman } 26336080Swollman } 26436080Swollman free(buf); 2651590Srgrimes } 2661590Srgrimes} 2671590Srgrimes 2681590Srgrimesstatic void 26978314Sassarunixdomainpr(struct xunpcb *xunp, struct xsocket *so) 2701590Srgrimes{ 27136080Swollman struct unpcb *unp; 27236080Swollman struct sockaddr_un *sa; 2731590Srgrimes static int first = 1; 274295136Salfred char buf1[33]; 275279122Smarcel static const char *titles[2] = { 276279122Smarcel "{T:/%-8.8s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-6.6s} {T:/%8.8s} " 277279122Smarcel "{T:/%8.8s} {T:/%8.8s} {T:/%8.8s} {T:Addr}\n", 278279122Smarcel "{T:/%-16.16s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-6.6s} {T:/%16.16s} " 279279122Smarcel "{T:/%16.16s} {T:/%16.16s} {T:/%16.16s} {T:Addr}\n" 280279122Smarcel }; 281279122Smarcel static const char *format[2] = { 282279122Smarcel "{q:address/%8lx} {t:type/%-6.6s} " 283279122Smarcel "{:receive-bytes-waiting/%6u} " 284279122Smarcel "{:send-bytes-waiting/%6u} " 285279122Smarcel "{q:vnode/%8lx} {q:connection/%8lx} " 286279122Smarcel "{q:first-reference/%8lx} {q:next-reference/%8lx}", 287279122Smarcel "{q:address/%16lx} {t:type/%-6.6s} " 288279122Smarcel "{:receive-bytes-waiting/%6u} " 289279122Smarcel "{:send-bytes-waiting/%6u} " 290279122Smarcel "{q:vnode/%16lx} {q:connection/%16lx} " 291279122Smarcel "{q:first-reference/%16lx} {q:next-reference/%16lx}" 292279122Smarcel }; 293279122Smarcel int fmt = (sizeof(void *) == 8) ? 1 : 0; 2941590Srgrimes 29536080Swollman unp = &xunp->xu_unp; 29636080Swollman if (unp->unp_addr) 29736080Swollman sa = &xunp->xu_addr; 29836080Swollman else 29928726Swollman sa = (struct sockaddr_un *)0; 30036080Swollman 301186644Smaxim if (first && !Lflag) { 302279122Smarcel xo_emit("{T:Active UNIX domain sockets}\n"); 303279122Smarcel xo_emit(titles[fmt], 3041590Srgrimes "Address", "Type", "Recv-Q", "Send-Q", 3051590Srgrimes "Inode", "Conn", "Refs", "Nextref"); 3061590Srgrimes first = 0; 3071590Srgrimes } 308186644Smaxim 309186644Smaxim if (Lflag && so->so_qlimit == 0) 310186644Smaxim return; 311186644Smaxim 312186644Smaxim if (Lflag) { 313295136Salfred snprintf(buf1, sizeof buf1, "%u/%u/%u", so->so_qlen, 314186644Smaxim so->so_incqlen, so->so_qlimit); 315295136Salfred xo_emit("unix {d:socket/%-32.32s}{e:queue-length/%u}" 316295136Salfred "{e:incomplete-queue-length/%u}{e:queue-limit/%u}", 317279122Smarcel buf1, so->so_qlen, so->so_incqlen, so->so_qlimit); 318186644Smaxim } else { 319279122Smarcel xo_emit(format[fmt], 320186644Smaxim (long)so->so_pcb, socktype[so->so_type], so->so_rcv.sb_cc, 321275326Sglebius so->so_snd.sb_cc, (long)unp->unp_vnode, 322275326Sglebius (long)unp->unp_conn, 323186644Smaxim (long)LIST_FIRST(&unp->unp_refs), 324186644Smaxim (long)LIST_NEXT(unp, unp_reflink)); 325186644Smaxim } 32628726Swollman if (sa) 327279122Smarcel xo_emit(" {:path/%.*s}", 32837453Sbde (int)(sa->sun_len - offsetof(struct sockaddr_un, sun_path)), 32936091Sache sa->sun_path); 330279122Smarcel xo_emit("\n"); 3311590Srgrimes} 332