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unix.c (160787) unix.c (171465)
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

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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>
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

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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>
41__FBSDID("$FreeBSD: head/usr.bin/netstat/unix.c 160787 2006-07-28 16:09:19Z yar $");
41__FBSDID("$FreeBSD: head/usr.bin/netstat/unix.c 171465 2007-07-16 17:15:55Z jhb $");
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>

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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>
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>

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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>
64#include <kvm.h>
65#include "netstat.h"
66
67static void unixdomainpr (struct xunpcb *, struct xsocket *);
68
69static const char *const socktype[] =
70 { "#0", "stream", "dgram", "raw", "rdm", "seqpacket" };
71
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
72void
73unixpr(void)
73static int
74pcblist_sysctl(int type, char **bufp)
74{
75 char *buf;
75{
76 char *buf;
76 int type;
77 size_t len;
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;
78 struct xsocket *so;
79 struct xunpgen *xug, *oxug;
80 struct xunpcb *xunp;
200 struct xsocket *so;
201 struct xunpgen *xug, *oxug;
202 struct xunpcb *xunp;
81 char mibvar[sizeof "net.local.seqpacket.pcblist"];
82
83 for (type = SOCK_STREAM; type <= SOCK_SEQPACKET; type++) {
203
204 for (type = SOCK_STREAM; type <= SOCK_SEQPACKET; type++) {
84 sprintf(mibvar, "net.local.%s.pcblist", socktype[type]);
85
86 len = 0;
87 if (sysctlbyname(mibvar, 0, &len, 0, 0) < 0) {
88 if (errno != ENOENT)
89 warn("sysctl: %s", mibvar);
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)
90 continue;
212 continue;
91 }
92 if ((buf = malloc(len)) == 0) {
93 warnx("malloc %lu bytes", (u_long)len);
213 if (ret < 0)
94 return;
214 return;
95 }
96 if (sysctlbyname(mibvar, buf, &len, 0, 0) < 0) {
97 warn("sysctl: %s", mibvar);
98 free(buf);
99 return;
100 }
101
102 oxug = xug = (struct xunpgen *)buf;
103 for (xug = (struct xunpgen *)((char *)xug + xug->xug_len);
104 xug->xug_len > sizeof(struct xunpgen);
105 xug = (struct xunpgen *)((char *)xug + xug->xug_len)) {
106 xunp = (struct xunpcb *)xug;
107 so = &xunp->xu_socket;
108

--- 53 unchanged lines hidden --- 		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

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