2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1983, 1988, 1993
5 * The Regents of the University of California. All rights reserved.
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8 * modification, are permitted provided that the following conditions
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11 * notice, this list of conditions and the following disclaimer.
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32 #include <sys/cdefs.h>
34 * Display protocol blocks in the unix domain.
36 #include <sys/param.h>
37 #include <sys/queue.h>
38 #include <sys/protosw.h>
39 #include <sys/socket.h>
41 #include <sys/socketvar.h>
43 #include <sys/sysctl.h>
46 #include <sys/unpcb.h>
48 #include <netinet/in.h>
62 static void unixdomainpr(struct xunpcb *, struct xsocket *);
64 static const char *const socktype[] =
65 { "#0", "stream", "dgram", "raw", "rdm", "seqpacket" };
68 pcblist_sysctl(int type, char **bufp)
72 char mibvar[sizeof "net.local.seqpacket.pcblist"];
74 snprintf(mibvar, sizeof(mibvar), "net.local.%s.pcblist", socktype[type]);
77 if (sysctlbyname(mibvar, 0, &len, 0, 0) < 0) {
79 xo_warn("sysctl: %s", mibvar);
82 if ((buf = malloc(len)) == NULL) {
83 xo_warnx("malloc %lu bytes", (u_long)len);
86 if (sysctlbyname(mibvar, buf, &len, 0, 0) < 0) {
87 xo_warn("sysctl: %s", mibvar);
96 pcblist_kvm(u_long count_off, u_long gencnt_off, u_long head_off, char **bufp)
99 struct unpcb *unp, unp0, unp_conn;
104 unp_gen_t unp_gencnt;
109 if (count_off == 0 || gencnt_off == 0)
113 kread(count_off, &unp_count, sizeof(unp_count));
114 len = 2 * sizeof(xug) + (unp_count + unp_count / 8) * sizeof(xu);
115 if ((buf = malloc(len)) == NULL) {
116 xo_warnx("malloc %lu bytes", (u_long)len);
121 #define COPYOUT(obj, size) do { \
122 if (len < (size)) { \
123 xo_warnx("buffer size exceeded"); \
126 bcopy((obj), p, (size)); \
131 #define KREAD(off, buf, len) do { \
132 if (kread((uintptr_t)(off), (buf), (len)) != 0) \
136 /* Write out header. */
137 kread(gencnt_off, &unp_gencnt, sizeof(unp_gencnt));
138 xug.xug_len = sizeof xug;
139 xug.xug_count = unp_count;
140 xug.xug_gen = unp_gencnt;
142 COPYOUT(&xug, sizeof xug);
144 /* Walk the PCB list. */
145 xu.xu_len = sizeof xu;
146 KREAD(head_off, &head, sizeof(head));
147 LIST_FOREACH(unp, &head, unp_link) {
148 xu.xu_unpp = (uintptr_t)unp;
149 KREAD(unp, &unp0, sizeof (*unp));
152 if (unp->unp_gencnt > unp_gencnt)
154 if (unp->unp_addr != NULL) {
155 KREAD(unp->unp_addr, &sun_len, sizeof(sun_len));
156 KREAD(unp->unp_addr, &xu.xu_addr, sun_len);
158 if (unp->unp_conn != NULL) {
159 KREAD(unp->unp_conn, &unp_conn, sizeof(unp_conn));
160 if (unp_conn.unp_addr != NULL) {
161 KREAD(unp_conn.unp_addr, &sun_len,
163 KREAD(unp_conn.unp_addr, &xu.xu_caddr, sun_len);
166 KREAD(unp->unp_socket, &so, sizeof(so));
167 if (sotoxsocket(&so, &xu.xu_socket) != 0)
169 COPYOUT(&xu, sizeof(xu));
172 /* Reread the counts and write the footer. */
173 kread(count_off, &unp_count, sizeof(unp_count));
174 kread(gencnt_off, &unp_gencnt, sizeof(unp_gencnt));
175 xug.xug_count = unp_count;
176 xug.xug_gen = unp_gencnt;
177 COPYOUT(&xug, sizeof xug);
190 unixpr(u_long count_off, u_long gencnt_off, u_long dhead_off, u_long shead_off,
191 u_long sphead_off, bool *first)
196 struct xunpgen *xug, *oxug;
201 for (type = SOCK_STREAM; type <= SOCK_SEQPACKET; type++) {
203 ret = pcblist_sysctl(type, &buf);
208 head_off = shead_off;
212 head_off = dhead_off;
216 head_off = sphead_off;
219 ret = pcblist_kvm(count_off, gencnt_off, head_off,
227 oxug = xug = (struct xunpgen *)buf;
228 for (xug = (struct xunpgen *)((char *)xug + xug->xug_len);
229 xug->xug_len > sizeof(struct xunpgen);
230 xug = (struct xunpgen *)((char *)xug + xug->xug_len)) {
231 xunp = (struct xunpcb *)xug;
232 so = &xunp->xu_socket;
234 /* Ignore PCBs which were freed during copyout. */
235 if (xunp->unp_gencnt > oxug->xug_gen)
238 xo_open_list("socket");
241 xo_open_instance("socket");
242 unixdomainpr(xunp, so);
243 xo_close_instance("socket");
245 if (xug != oxug && xug->xug_gen != oxug->xug_gen) {
246 if (oxug->xug_count > xug->xug_count) {
247 xo_emit("Some {:type/%s} sockets may have "
248 "been {:action/deleted}.\n",
250 } else if (oxug->xug_count < xug->xug_count) {
251 xo_emit("Some {:type/%s} sockets may have "
252 "been {:action/created}.\n",
255 xo_emit("Some {:type/%s} sockets may have "
256 "been {:action/created or deleted}",
265 unixdomainpr(struct xunpcb *xunp, struct xsocket *so)
267 struct sockaddr_un *sa;
268 static int first = 1;
270 static const char *titles[2] = {
271 "{T:/%-8.8s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-6.6s} {T:/%8.8s} "
272 "{T:/%8.8s} {T:/%8.8s} {T:/%8.8s} {T:Addr}\n",
273 "{T:/%-16.16s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-6.6s} {T:/%16.16s} "
274 "{T:/%16.16s} {T:/%16.16s} {T:/%16.16s} {T:Addr}\n"
276 static const char *format[2] = {
277 "{q:address/%8lx} {t:type/%-6.6s} "
278 "{:receive-bytes-waiting/%6u} "
279 "{:send-bytes-waiting/%6u} "
280 "{q:vnode/%8lx} {q:connection/%8lx} "
281 "{q:first-reference/%8lx} {q:next-reference/%8lx}",
282 "{q:address/%16lx} {t:type/%-6.6s} "
283 "{:receive-bytes-waiting/%6u} "
284 "{:send-bytes-waiting/%6u} "
285 "{q:vnode/%16lx} {q:connection/%16lx} "
286 "{q:first-reference/%16lx} {q:next-reference/%16lx}"
288 int fmt = (sizeof(void *) == 8) ? 1 : 0;
290 sa = (xunp->xu_addr.sun_family == AF_UNIX) ? &xunp->xu_addr : NULL;
292 if (first && !Lflag) {
293 xo_emit("{T:Active UNIX domain sockets}\n");
295 "Address", "Type", "Recv-Q", "Send-Q",
296 "Inode", "Conn", "Refs", "Nextref");
300 if (Lflag && so->so_qlimit == 0)
304 snprintf(buf1, sizeof buf1, "%u/%u/%u", so->so_qlen,
305 so->so_incqlen, so->so_qlimit);
306 xo_emit("unix {d:socket/%-32.32s}{e:queue-length/%u}"
307 "{e:incomplete-queue-length/%u}{e:queue-limit/%u}",
308 buf1, so->so_qlen, so->so_incqlen, so->so_qlimit);
311 (long)so->so_pcb, socktype[so->so_type], so->so_rcv.sb_cc,
312 so->so_snd.sb_cc, (long)xunp->unp_vnode,
313 (long)xunp->unp_conn, (long)xunp->xu_firstref,
314 (long)xunp->xu_nextref);
317 xo_emit(" {:path/%.*s}",
318 (int)(sa->sun_len - offsetof(struct sockaddr_un, sun_path)),