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#if 0 35#ifndef lint 36static char sccsid[] = "@(#)unix.c 8.1 (Berkeley) 6/6/93"; 37#endif /* not lint */ 38#endif 39 40#include <sys/cdefs.h>
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41__FBSDID("$FreeBSD: head/usr.bin/netstat/unix.c 175061 2008-01-02 23:26:11Z obrien $");
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41__FBSDID("$FreeBSD: head/usr.bin/netstat/unix.c 186644 2008-12-31 08:56:49Z maxim $"); |
42 43/* 44 * Display protocol blocks in the unix domain. 45 */ 46#include <sys/param.h> 47#include <sys/queue.h> 48#include <sys/protosw.h> 49#include <sys/socket.h> 50#include <sys/socketvar.h> 51#include <sys/mbuf.h> 52#include <sys/sysctl.h> 53#include <sys/un.h> 54#include <sys/unpcb.h> 55 56#include <netinet/in.h> 57 58#include <errno.h> 59#include <err.h> 60#include <stddef.h> 61#include <stdint.h> 62#include <stdio.h> 63#include <stdlib.h> 64#include <strings.h> 65#include <kvm.h> 66#include "netstat.h" 67 68static void unixdomainpr(struct xunpcb *, struct xsocket *); 69 70static const char *const socktype[] = 71 { "#0", "stream", "dgram", "raw", "rdm", "seqpacket" }; 72 73static int 74pcblist_sysctl(int type, char **bufp) 75{ 76 char *buf; 77 size_t len; 78 char mibvar[sizeof "net.local.seqpacket.pcblist"]; 79 80 sprintf(mibvar, "net.local.%s.pcblist", socktype[type]); 81 82 len = 0; 83 if (sysctlbyname(mibvar, 0, &len, 0, 0) < 0) { 84 if (errno != ENOENT) 85 warn("sysctl: %s", mibvar); 86 return (-1); 87 } 88 if ((buf = malloc(len)) == 0) { 89 warnx("malloc %lu bytes", (u_long)len); 90 return (-2); 91 } 92 if (sysctlbyname(mibvar, buf, &len, 0, 0) < 0) { 93 warn("sysctl: %s", mibvar); 94 free(buf); 95 return (-2); 96 } 97 *bufp = buf; 98 return (0); 99} 100 101static int 102pcblist_kvm(u_long count_off, u_long gencnt_off, u_long head_off, char **bufp) 103{ 104 struct unp_head head; 105 struct unpcb *unp, unp_conn; 106 u_char sun_len; 107 struct socket so; 108 struct xunpgen xug; 109 struct xunpcb xu; 110 unp_gen_t unp_gencnt; 111 u_int unp_count; 112 char *buf, *p; 113 size_t len; 114 115 if (count_off == 0 || gencnt_off == 0) 116 return (-2); 117 if (head_off == 0) 118 return (-1); 119 kread(count_off, &unp_count, sizeof(unp_count)); 120 len = 2 * sizeof(xug) + (unp_count + unp_count / 8) * sizeof(xu); 121 if ((buf = malloc(len)) == 0) { 122 warnx("malloc %lu bytes", (u_long)len); 123 return (-2); 124 } 125 p = buf; 126 127#define COPYOUT(obj, size) do { \ 128 if (len < (size)) { \ 129 warnx("buffer size exceeded"); \ 130 goto fail; \ 131 } \ 132 bcopy((obj), p, (size)); \ 133 len -= (size); \ 134 p += (size); \ 135} while (0) 136 137#define KREAD(off, buf, len) do { \ 138 if (kread((uintptr_t)(off), (buf), (len)) != 0) \ 139 goto fail; \ 140} while (0) 141 142 /* Write out header. */ 143 kread(gencnt_off, &unp_gencnt, sizeof(unp_gencnt)); 144 xug.xug_len = sizeof xug; 145 xug.xug_count = unp_count; 146 xug.xug_gen = unp_gencnt; 147 xug.xug_sogen = 0; 148 COPYOUT(&xug, sizeof xug); 149 150 /* Walk the PCB list. */ 151 xu.xu_len = sizeof xu; 152 KREAD(head_off, &head, sizeof(head)); 153 LIST_FOREACH(unp, &head, unp_link) { 154 xu.xu_unpp = unp; 155 KREAD(unp, &xu.xu_unp, sizeof (*unp)); 156 unp = &xu.xu_unp; 157 158 if (unp->unp_gencnt > unp_gencnt) 159 continue; 160 if (unp->unp_addr != NULL) { 161 KREAD(unp->unp_addr, &sun_len, sizeof(sun_len)); 162 KREAD(unp->unp_addr, &xu.xu_addr, sun_len); 163 } 164 if (unp->unp_conn != NULL) { 165 KREAD(unp->unp_conn, &unp_conn, sizeof(unp_conn)); 166 if (unp_conn.unp_addr != NULL) { 167 KREAD(unp_conn.unp_addr, &sun_len, 168 sizeof(sun_len)); 169 KREAD(unp_conn.unp_addr, &xu.xu_caddr, sun_len); 170 } 171 } 172 KREAD(unp->unp_socket, &so, sizeof(so)); 173 if (sotoxsocket(&so, &xu.xu_socket) != 0) 174 goto fail; 175 COPYOUT(&xu, sizeof(xu)); 176 } 177 178 /* Reread the counts and write the footer. */ 179 kread(count_off, &unp_count, sizeof(unp_count)); 180 kread(gencnt_off, &unp_gencnt, sizeof(unp_gencnt)); 181 xug.xug_count = unp_count; 182 xug.xug_gen = unp_gencnt; 183 COPYOUT(&xug, sizeof xug); 184 185 *bufp = buf; 186 return (0); 187 188fail: 189 free(buf); 190 return (-1); 191#undef COPYOUT 192#undef KREAD 193} 194 195void 196unixpr(u_long count_off, u_long gencnt_off, u_long dhead_off, u_long shead_off) 197{ 198 char *buf; 199 int ret, type; 200 struct xsocket *so; 201 struct xunpgen *xug, *oxug; 202 struct xunpcb *xunp; 203 204 for (type = SOCK_STREAM; type <= SOCK_SEQPACKET; type++) { 205 if (live) 206 ret = pcblist_sysctl(type, &buf); 207 else 208 ret = pcblist_kvm(count_off, gencnt_off, 209 type == SOCK_STREAM ? shead_off : 210 (type == SOCK_DGRAM ? dhead_off : 0), &buf); 211 if (ret == -1) 212 continue; 213 if (ret < 0) 214 return; 215 216 oxug = xug = (struct xunpgen *)buf; 217 for (xug = (struct xunpgen *)((char *)xug + xug->xug_len); 218 xug->xug_len > sizeof(struct xunpgen); 219 xug = (struct xunpgen *)((char *)xug + xug->xug_len)) { 220 xunp = (struct xunpcb *)xug; 221 so = &xunp->xu_socket; 222 223 /* Ignore PCBs which were freed during copyout. */ 224 if (xunp->xu_unp.unp_gencnt > oxug->xug_gen) 225 continue; 226 unixdomainpr(xunp, so); 227 } 228 if (xug != oxug && xug->xug_gen != oxug->xug_gen) { 229 if (oxug->xug_count > xug->xug_count) { 230 printf("Some %s sockets may have been deleted.\n", 231 socktype[type]); 232 } else if (oxug->xug_count < xug->xug_count) { 233 printf("Some %s sockets may have been created.\n", 234 socktype[type]); 235 } else { 236 printf("Some %s sockets may have been created or deleted", 237 socktype[type]); 238 } 239 } 240 free(buf); 241 } 242} 243 244static void 245unixdomainpr(struct xunpcb *xunp, struct xsocket *so) 246{ 247 struct unpcb *unp; 248 struct sockaddr_un *sa; 249 static int first = 1;
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250 char buf1[15]; |
251 252 unp = &xunp->xu_unp; 253 if (unp->unp_addr) 254 sa = &xunp->xu_addr; 255 else 256 sa = (struct sockaddr_un *)0; 257
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257 if (first) {
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258 if (first && !Lflag) { |
259 printf("Active UNIX domain sockets\n"); 260 printf( 261"%-8.8s %-6.6s %-6.6s %-6.6s %8.8s %8.8s %8.8s %8.8s Addr\n", 262 "Address", "Type", "Recv-Q", "Send-Q", 263 "Inode", "Conn", "Refs", "Nextref"); 264 first = 0; 265 }
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265 printf("%8lx %-6.6s %6u %6u %8lx %8lx %8lx %8lx",
266 (long)so->so_pcb, socktype[so->so_type], so->so_rcv.sb_cc,
267 so->so_snd.sb_cc,
268 (long)unp->unp_vnode, (long)unp->unp_conn,
269 (long)LIST_FIRST(&unp->unp_refs), (long)LIST_NEXT(unp, unp_reflink));
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266 267 if (Lflag && so->so_qlimit == 0) 268 return; 269 270 if (Lflag) { 271 snprintf(buf1, 15, "%d/%d/%d", so->so_qlen, 272 so->so_incqlen, so->so_qlimit); 273 printf("unix %-14.14s", buf1); 274 } else { 275 printf("%8lx %-6.6s %6u %6u %8lx %8lx %8lx %8lx", 276 (long)so->so_pcb, socktype[so->so_type], so->so_rcv.sb_cc, 277 so->so_snd.sb_cc, (long)unp->unp_vnode, (long)unp->unp_conn, 278 (long)LIST_FIRST(&unp->unp_refs), 279 (long)LIST_NEXT(unp, unp_reflink)); 280 } |
281 if (sa) 282 printf(" %.*s", 283 (int)(sa->sun_len - offsetof(struct sockaddr_un, sun_path)), 284 sa->sun_path); 285 putchar('\n'); 286}
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