?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
dmake: do not set MAKEFLAGS=k
[unleashed/tickless.git] / usr / src / cmd / mdb / common / modules / ipc / ipc.c
blobed29971b2d0055ab5c2bbe458ecef52cd70eece2
1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26 #include <mdb/mdb_modapi.h>
27 #include <mdb/mdb_ks.h>
28
29 #include <sys/types.h>
30 #include <sys/mman.h>
31 #include <sys/project.h>
32 #include <sys/ipc_impl.h>
33 #include <sys/shm_impl.h>
34 #include <sys/sem_impl.h>
35 #include <sys/msg_impl.h>
36
37 #include <vm/anon.h>
38
39 #define CMN_HDR_START "%<u>"
40 #define CMN_HDR_END "%</u>\n"
41 #define CMN_INDENT (4)
42 #define CMN_INACTIVE "%s facility inactive.\n"
43
44 /*
45 * Bitmap data for page protection flags suitable for use with %b.
46 */
47 const mdb_bitmask_t prot_flag_bits[] = {
48 { "PROT_READ", PROT_READ, PROT_READ },
49 { "PROT_WRITE", PROT_WRITE, PROT_WRITE },
50 { "PROT_EXEC", PROT_EXEC, PROT_EXEC },
51 { "PROT_USER", PROT_USER, PROT_USER },
52 { NULL, 0, 0 }
53 };
54
55 static void
56 printtime_nice(const char *str, time_t time)
57 {
58 if (time)
59 mdb_printf("%s%Y\n", str, time);
60 else
61 mdb_printf("%sn/a\n", str);
62 }
63
64 /*
65 * Print header common to all IPC types.
66 */
67 static void
68 ipcperm_header()
69 {
70 mdb_printf(CMN_HDR_START "%?s %5s %5s %8s %5s %5s %6s %5s %5s %5s %5s"
71 CMN_HDR_END, "ADDR", "REF", "ID", "KEY", "MODE", "PRJID", "ZONEID",
72 "OWNER", "GROUP", "CREAT", "CGRP");
73 }
74
75 /*
76 * Print data common to all IPC types.
77 */
78 static void
79 ipcperm_print(uintptr_t addr, kipc_perm_t *perm)
80 {
81 kproject_t proj;
82 int res;
83
84 res = mdb_vread(&proj, sizeof (kproject_t), (uintptr_t)perm->ipc_proj);
85
86 if (res == -1)
87 mdb_warn("failed to read kproject_t at %#p", perm->ipc_proj);
88
89 mdb_printf("%0?p %5d %5d", addr, perm->ipc_ref, perm->ipc_id);
90 if (perm->ipc_key)
91 mdb_printf(" %8x", perm->ipc_key);
92 else
93 mdb_printf(" %8s", "private");
94 mdb_printf(" %5#o", perm->ipc_mode & 07777);
95 if (res == -1)
96 mdb_printf(" %5s %5s", "<flt>", "<flt>");
97 else
98 mdb_printf(" %5d %6d", proj.kpj_id, proj.kpj_zoneid);
99 mdb_printf(" %5d %5d %5d %5d\n", perm->ipc_uid, perm->ipc_gid,
100 perm->ipc_cuid, perm->ipc_cgid);
101
102 }
103
104 /*ARGSUSED*/
105 static int
106 ipcperm(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
107 {
108 kipc_perm_t perm;
109
110 if (!(flags & DCMD_ADDRSPEC))
111 return (DCMD_USAGE);
112
113 if (DCMD_HDRSPEC(flags))
114 ipcperm_header();
115
116 if (mdb_vread(&perm, sizeof (kipc_perm_t), addr) == -1) {
117 mdb_warn("failed to read kipc_perm_t at %#lx", addr);
118 return (DCMD_ERR);
119 }
120
121 ipcperm_print(addr, &perm);
122 return (DCMD_OK);
123 }
124
125
126 #define MSG_SND_SIZE 0x1
127 static int
128 msgq_check_for_waiters(list_t *walk_this, int min, int max,
129 int copy_wait, uintptr_t addr, int flag)
130
131 {
132 int found = 0;
133 int ii;
134 msgq_wakeup_t *walker, next;
135 uintptr_t head;
136
137 for (ii = min; ii < max; ii++) {
138 head = ((ulong_t)addr) + sizeof (list_t)*ii +
139 sizeof (list_node_t);
140 if (head != (uintptr_t)walk_this[ii].list_head.list_next) {
141 walker =
142 (msgq_wakeup_t *)walk_this[ii].list_head.list_next;
143 while (head != (uintptr_t)walker) {
144 if (mdb_vread(&next, sizeof (msgq_wakeup_t),
145 (uintptr_t)walker) == -1) {
146 mdb_warn(
147 "Failed to read message queue\n");
148 return (found);
149 }
150
151 if (flag & MSG_SND_SIZE) {
152 mdb_printf("%15lx\t%6d\t%15lx\t%15d\n",
153 next.msgw_thrd, next.msgw_type,
154 walker + (uintptr_t)
155 OFFSETOF(msgq_wakeup_t,
156 msgw_wake_cv), next.msgw_snd_size);
157 } else {
158 mdb_printf("%15lx\t%6d\t%15lx\t%15s\n",
159 next.msgw_thrd, next.msgw_type,
160 walker + (uintptr_t)
161 OFFSETOF(msgq_wakeup_t,
162 msgw_wake_cv),
163 (copy_wait ? "yes":"no"));
164 }
165 found++;
166 walker =
167 (msgq_wakeup_t *)next.msgw_list.list_next;
168 }
169 }
170 }
171 return (found);
172 }
173
174 static void
175 msq_print(kmsqid_t *msqid, uintptr_t addr)
176 {
177 int total = 0;
178
179 mdb_printf("&list: %-?p\n", addr + OFFSETOF(kmsqid_t, msg_list));
180 mdb_printf("cbytes: 0t%lu qnum: 0t%lu qbytes: 0t%lu"
181 " qmax: 0t%lu\n", msqid->msg_cbytes, msqid->msg_qnum,
182 msqid->msg_qbytes, msqid->msg_qmax);
183 mdb_printf("lspid: 0t%d lrpid: 0t%d\n",
184 (int)msqid->msg_lspid, (int)msqid->msg_lrpid);
185 printtime_nice("stime: ", msqid->msg_stime);
186 printtime_nice("rtime: ", msqid->msg_rtime);
187 printtime_nice("ctime: ", msqid->msg_ctime);
188 mdb_printf("snd_cnt: 0t%lld snd_cv: %hd (%p)\n",
189 msqid->msg_snd_cnt, msqid->msg_snd_cv._opaque,
190 addr + (uintptr_t)OFFSETOF(kmsqid_t, msg_snd_cv));
191 mdb_printf("Blocked recievers\n");
192 mdb_printf("%15s\t%6s\t%15s\t%15s\n", "Thread Addr",
193 "Type", "cv addr", "copyout-wait?");
194 total += msgq_check_for_waiters(&msqid->msg_cpy_block,
195 0, 1, 1, addr + OFFSETOF(kmsqid_t, msg_cpy_block), 0);
196 total += msgq_check_for_waiters(msqid->msg_wait_snd_ngt,
197 0, MSG_MAX_QNUM + 1, 0,
198 addr + OFFSETOF(kmsqid_t, msg_wait_snd_ngt), 0);
199 mdb_printf("Blocked senders\n");
200 total += msgq_check_for_waiters(&msqid->msg_wait_rcv,
201 0, 1, 1, addr + OFFSETOF(kmsqid_t, msg_wait_rcv),
202 MSG_SND_SIZE);
203 mdb_printf("%15s\t%6s\t%15s\t%15s\n", "Thread Addr",
204 "Type", "cv addr", "Msg Size");
205 total += msgq_check_for_waiters(msqid->msg_wait_snd,
206 0, MSG_MAX_QNUM + 1, 0, addr + OFFSETOF(kmsqid_t,
207 msg_wait_snd), 0);
208 mdb_printf("Total number of waiters: %d\n", total);
209 }
210
211
212 /*ARGSUSED1*/
213 static void
214 shm_print(kshmid_t *shmid, uintptr_t addr)
215 {
216 shmatt_t nattch;
217
218 nattch = shmid->shm_perm.ipc_ref - (IPC_FREE(&shmid->shm_perm) ? 0 : 1);
219
220 mdb_printf(CMN_HDR_START "%10s %?s %5s %7s %7s %7s %7s" CMN_HDR_END,
221 "SEGSZ", "AMP", "LKCNT", "LPID", "CPID", "NATTCH", "CNATTCH");
222 mdb_printf("%10#lx %?p %5u %7d %7d %7lu %7lu\n",
223 shmid->shm_segsz, shmid->shm_amp, shmid->shm_lkcnt,
224 (int)shmid->shm_lpid, (int)shmid->shm_cpid, nattch,
225 shmid->shm_ismattch);
226
227 printtime_nice("atime: ", shmid->shm_atime);
228 printtime_nice("dtime: ", shmid->shm_dtime);
229 printtime_nice("ctime: ", shmid->shm_ctime);
230 mdb_printf("sptinfo: %-?p sptseg: %-?p\n",
231 shmid->shm_sptinfo, shmid->shm_sptseg);
232 mdb_printf("sptprot: <%lb>\n", shmid->shm_sptprot, prot_flag_bits);
233 }
234
235
236 /*ARGSUSED1*/
237 static void
238 sem_print(ksemid_t *semid, uintptr_t addr)
239 {
240 mdb_printf("base: %-?p nsems: 0t%u\n",
241 semid->sem_base, semid->sem_nsems);
242 printtime_nice("otime: ", semid->sem_otime);
243 printtime_nice("ctime: ", semid->sem_ctime);
244 mdb_printf("binary: %s\n", semid->sem_binary ? "yes" : "no");
245 }
246
247 typedef struct ipc_ops_vec {
248 char *iv_wcmd; /* walker name */
249 char *iv_ocmd; /* output dcmd */
250 char *iv_service; /* service pointer */
251 void (*iv_print)(void *, uintptr_t); /* output callback */
252 size_t iv_idsize;
253 } ipc_ops_vec_t;
254
255 ipc_ops_vec_t msq_ops_vec = {
256 "msq",
257 "kmsqid",
258 "msq_svc",
259 (void(*)(void *, uintptr_t))msq_print,
260 sizeof (kmsqid_t)
261 };
262
263 ipc_ops_vec_t shm_ops_vec = {
264 "shm",
265 "kshmid",
266 "shm_svc",
267 (void(*)(void *, uintptr_t))shm_print,
268 sizeof (kshmid_t)
269 };
270
271 ipc_ops_vec_t sem_ops_vec = {
272 "sem",
273 "ksemid",
274 "sem_svc",
275 (void(*)(void *, uintptr_t))sem_print,
276 sizeof (ksemid_t)
277 };
278
279
280 /*
281 * Generic IPC data structure display code
282 */
283 static int
284 ds_print(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv,
285 ipc_ops_vec_t *iv)
286 {
287 void *iddata;
288
289 if (!(flags & DCMD_ADDRSPEC)) {
290 uint_t oflags = 0;
291
292 if (mdb_getopts(argc, argv, 'l', MDB_OPT_SETBITS, 1, &oflags,
293 NULL) != argc)
294 return (DCMD_USAGE);
295
296 if (mdb_walk_dcmd(iv->iv_wcmd, oflags ? iv->iv_ocmd : "ipcperm",
297 argc, argv) == -1) {
298 mdb_warn("can't walk '%s'", iv->iv_wcmd);
299 return (DCMD_ERR);
300 }
301 return (DCMD_OK);
302 }
303
304 iddata = mdb_alloc(iv->iv_idsize, UM_SLEEP | UM_GC);
305 if (mdb_vread(iddata, iv->iv_idsize, addr) == -1) {
306 mdb_warn("failed to read %s at %#lx", iv->iv_ocmd, addr);
307 return (DCMD_ERR);
308 }
309
310 if (!DCMD_HDRSPEC(flags) && iv->iv_print)
311 mdb_printf("\n");
312
313 if (DCMD_HDRSPEC(flags) || iv->iv_print)
314 ipcperm_header();
315
316 ipcperm_print(addr, (struct kipc_perm *)iddata);
317 if (iv->iv_print) {
318 mdb_inc_indent(CMN_INDENT);
319 iv->iv_print(iddata, addr);
320 mdb_dec_indent(CMN_INDENT);
321 }
322
323 return (DCMD_OK);
324 }
325
326
327 /*
328 * Stubs to call ds_print with the appropriate ops vector
329 */
330 static int
331 cmd_kshmid(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
332 {
333 return (ds_print(addr, flags, argc, argv, &shm_ops_vec));
334 }
335
336
337 static int
338 cmd_kmsqid(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
339 {
340 return (ds_print(addr, flags, argc, argv, &msq_ops_vec));
341 }
342
343 static int
344 cmd_ksemid(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
345 {
346 return (ds_print(addr, flags, argc, argv, &sem_ops_vec));
347 }
348
349 /*
350 * Generic IPC walker
351 */
352
353 static int
354 ds_walk_init(mdb_walk_state_t *wsp)
355 {
356 ipc_ops_vec_t *iv = wsp->walk_arg;
357
358 if (wsp->walk_arg != NULL && wsp->walk_addr != (uintptr_t)NULL)
359 mdb_printf("ignoring provided address\n");
360
361 if (wsp->walk_arg)
362 if (mdb_readvar(&wsp->walk_addr, iv->iv_service) == -1) {
363 mdb_printf("failed to read '%s'; module not present\n",
364 iv->iv_service);
365 return (WALK_DONE);
366 }
367 else
368 wsp->walk_addr = wsp->walk_addr +
369 OFFSETOF(ipc_service_t, ipcs_usedids);
370
371 if (mdb_layered_walk("list", wsp) == -1)
372 return (WALK_ERR);
373
374 return (WALK_NEXT);
375 }
376
377
378 static int
379 ds_walk_step(mdb_walk_state_t *wsp)
380 {
381 return (wsp->walk_callback(wsp->walk_addr, wsp->walk_layer,
382 wsp->walk_cbdata));
383 }
384
385 /*
386 * Generic IPC ID/key to pointer code
387 */
388
389 static int
390 ipcid_impl(uintptr_t svcptr, uintptr_t id, uintptr_t *addr)
391 {
392 ipc_service_t service;
393 kipc_perm_t perm;
394 ipc_slot_t slot;
395 uintptr_t slotptr;
396 uint_t index;
397
398 if (id > INT_MAX) {
399 mdb_warn("id out of range\n");
400 return (DCMD_ERR);
401 }
402
403 if (mdb_vread(&service, sizeof (ipc_service_t), svcptr) == -1) {
404 mdb_warn("failed to read ipc_service_t at %#lx", svcptr);
405 return (DCMD_ERR);
406 }
407
408 index = (uint_t)id & (service.ipcs_tabsz - 1);
409 slotptr = (uintptr_t)(service.ipcs_table + index);
410
411 if (mdb_vread(&slot, sizeof (ipc_slot_t), slotptr) == -1) {
412 mdb_warn("failed to read ipc_slot_t at %#lx", slotptr);
413 return (DCMD_ERR);
414 }
415
416 if (slot.ipct_data == NULL)
417 return (DCMD_ERR);
418
419 if (mdb_vread(&perm, sizeof (kipc_perm_t),
420 (uintptr_t)slot.ipct_data) == -1) {
421 mdb_warn("failed to read kipc_perm_t at %#p",
422 slot.ipct_data);
423 return (DCMD_ERR);
424 }
425
426 if (perm.ipc_id != (uint_t)id)
427 return (DCMD_ERR);
428
429 *addr = (uintptr_t)slot.ipct_data;
430
431 return (DCMD_OK);
432 }
433
434
435 typedef struct findkey_data {
436 key_t fk_key;
437 uintptr_t fk_addr;
438 boolean_t fk_found;
439 } findkey_data_t;
440
441 static int
442 findkey(uintptr_t addr, kipc_perm_t *perm, findkey_data_t *arg)
443 {
444 if (perm->ipc_key == arg->fk_key) {
445 arg->fk_found = B_TRUE;
446 arg->fk_addr = addr;
447 return (WALK_DONE);
448 }
449 return (WALK_NEXT);
450 }
451
452 static int
453 ipckey_impl(uintptr_t svcptr, uintptr_t key, uintptr_t *addr)
454 {
455 ipc_service_t service;
456 findkey_data_t fkdata;
457
458 if ((key == IPC_PRIVATE) || (key > INT_MAX)) {
459 mdb_warn("key out of range\n");
460 return (DCMD_ERR);
461 }
462
463 if (mdb_vread(&service, sizeof (ipc_service_t), svcptr) == -1) {
464 mdb_warn("failed to read ipc_service_t at %#lx", svcptr);
465 return (DCMD_ERR);
466 }
467
468 fkdata.fk_key = (key_t)key;
469 fkdata.fk_found = B_FALSE;
470 if ((mdb_pwalk("avl", (mdb_walk_cb_t)findkey, &fkdata,
471 svcptr + OFFSETOF(ipc_service_t, ipcs_keys)) == -1) ||
472 !fkdata.fk_found)
473 return (DCMD_ERR);
474
475 *addr = fkdata.fk_addr;
476
477 return (DCMD_OK);
478 }
479
480 static int
481 ipckeyid(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv,
482 int(*fp)(uintptr_t, uintptr_t, uintptr_t *))
483 {
484 uintmax_t val;
485 uintptr_t raddr;
486 int result;
487
488 if (!(flags & DCMD_ADDRSPEC) || (argc != 1))
489 return (DCMD_USAGE);
490
491 if (argv[0].a_type == MDB_TYPE_IMMEDIATE)
492 val = argv[0].a_un.a_val;
493 else if (argv[0].a_type == MDB_TYPE_STRING)
494 val = mdb_strtoull(argv[0].a_un.a_str);
495 else
496 return (DCMD_USAGE);
497
498 result = fp(addr, val, &raddr);
499
500 if (result == DCMD_OK)
501 mdb_printf("%lx", raddr);
502
503 return (result);
504 }
505
506 static int
507 ipckey(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
508 {
509 return (ipckeyid(addr, flags, argc, argv, ipckey_impl));
510 }
511
512 static int
513 ipcid(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
514 {
515 return (ipckeyid(addr, flags, argc, argv, ipcid_impl));
516 }
517
518 static int
519 ds_ptr(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv,
520 ipc_ops_vec_t *iv)
521 {
522 uint_t kflag = FALSE;
523 uintptr_t svcptr, raddr;
524 int result;
525
526 if (!(flags & DCMD_ADDRSPEC))
527 return (DCMD_USAGE);
528
529 if (mdb_getopts(argc, argv,
530 'k', MDB_OPT_SETBITS, TRUE, &kflag, NULL) != argc)
531 return (DCMD_USAGE);
532
533 if (mdb_readvar(&svcptr, iv->iv_service) == -1) {
534 mdb_warn("failed to read '%s'; module not present\n",
535 iv->iv_service);
536 return (DCMD_ERR);
537 }
538
539 result = kflag ? ipckey_impl(svcptr, addr, &raddr) :
540 ipcid_impl(svcptr, addr, &raddr);
541
542 if (result == DCMD_OK)
543 mdb_printf("%lx", raddr);
544
545 return (result);
546 }
547
548 /*
549 * Stubs to call ds_ptr with the appropriate ops vector
550 */
551 static int
552 id2shm(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
553 {
554 return (ds_ptr(addr, flags, argc, argv, &shm_ops_vec));
555 }
556
557 static int
558 id2msq(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
559 {
560 return (ds_ptr(addr, flags, argc, argv, &msq_ops_vec));
561 }
562
563 static int
564 id2sem(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
565 {
566 return (ds_ptr(addr, flags, argc, argv, &sem_ops_vec));
567 }
568
569
570 /*
571 * The message queue contents walker
572 */
573
574 static int
575 msg_walk_init(mdb_walk_state_t *wsp)
576 {
577 wsp->walk_addr += OFFSETOF(kmsqid_t, msg_list);
578 if (mdb_layered_walk("list", wsp) == -1)
579 return (WALK_ERR);
580
581 return (WALK_NEXT);
582 }
583
584 static int
585 msg_walk_step(mdb_walk_state_t *wsp)
586 {
587 return (wsp->walk_callback(wsp->walk_addr, wsp->walk_layer,
588 wsp->walk_cbdata));
589 }
590
591 /*
592 * The "::ipcs" command itself. Just walks each IPC type in turn.
593 */
594
595 /*ARGSUSED*/
596 static int
597 ipcs(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
598 {
599 uint_t oflags = 0;
600
601 if ((flags & DCMD_ADDRSPEC) || mdb_getopts(argc, argv, 'l',
602 MDB_OPT_SETBITS, 1, &oflags, NULL) != argc)
603 return (DCMD_USAGE);
604
605 mdb_printf("Message queues:\n");
606 if (mdb_walk_dcmd("msq", oflags ? "kmsqid" : "ipcperm", argc, argv) ==
607 -1) {
608 mdb_warn("can't walk 'msq'");
609 return (DCMD_ERR);
610 }
611
612 mdb_printf("\nShared memory:\n");
613 if (mdb_walk_dcmd("shm", oflags ? "kshmid" : "ipcperm", argc, argv) ==
614 -1) {
615 mdb_warn("can't walk 'shm'");
616 return (DCMD_ERR);
617 }
618
619 mdb_printf("\nSemaphores:\n");
620 if (mdb_walk_dcmd("sem", oflags ? "ksemid" : "ipcperm", argc, argv) ==
621 -1) {
622 mdb_warn("can't walk 'sem'");
623 return (DCMD_ERR);
624 }
625
626 return (DCMD_OK);
627 }
628
629 static int
630 msgprint(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
631 {
632 struct msg message;
633 uint_t lflag = FALSE;
634 long type = 0;
635 char *tflag = NULL;
636
637 if (!(flags & DCMD_ADDRSPEC) || (mdb_getopts(argc, argv,
638 'l', MDB_OPT_SETBITS, TRUE, &lflag,
639 't', MDB_OPT_STR, &tflag, NULL) != argc))
640 return (DCMD_USAGE);
641
642 /*
643 * Handle negative values.
644 */
645 if (tflag != NULL) {
646 if (*tflag == '-') {
647 tflag++;
648 type = -1;
649 } else {
650 type = 1;
651 }
652 type *= mdb_strtoull(tflag);
653 }
654
655 if (DCMD_HDRSPEC(flags))
656 mdb_printf("%<u>%?s %?s %8s %8s %8s%</u>\n",
657 "ADDR", "TEXT", "SIZE", "TYPE", "REF");
658
659 if (mdb_vread(&message, sizeof (struct msg), addr) == -1) {
660 mdb_warn("failed to read msg at %#lx", addr);
661 return (DCMD_ERR);
662 }
663
664 /*
665 * If we are meeting our type contraints, display the message.
666 * If -l was specified, we will also display the message
667 * contents.
668 */
669 if ((type == 0) ||
670 (type > 0 && message.msg_type == type) ||
671 (type < 0 && message.msg_type <= -type)) {
672
673 if (lflag && !DCMD_HDRSPEC(flags))
674 mdb_printf("\n");
675
676 mdb_printf("%0?lx %?p %8ld %8ld %8ld\n", addr, message.msg_addr,
677 message.msg_size, message.msg_type, message.msg_copycnt);
678
679 if (lflag) {
680 mdb_printf("\n");
681 mdb_inc_indent(CMN_INDENT);
682 if (mdb_dumpptr(
683 (uintptr_t)message.msg_addr, message.msg_size,
684 MDB_DUMP_RELATIVE | MDB_DUMP_TRIM |
685 MDB_DUMP_ASCII | MDB_DUMP_HEADER |
686 MDB_DUMP_GROUP(4),
687 (mdb_dumpptr_cb_t)mdb_vread, NULL)) {
688 mdb_dec_indent(CMN_INDENT);
689 return (DCMD_ERR);
690 }
691 mdb_dec_indent(CMN_INDENT);
692 }
693 }
694
695 return (DCMD_OK);
696 }
697
698 /*
699 * MDB module linkage
700 */
701 static const mdb_dcmd_t dcmds[] = {
702 /* Generic routines */
703 { "ipcperm", ":", "display an IPC perm structure", ipcperm },
704 { "ipcid", ":id", "perform an IPC id lookup", ipcid },
705 { "ipckey", ":key", "perform an IPC key lookup", ipckey },
706
707 /* Specific routines */
708 { "kshmid", "?[-l]", "display a struct kshmid", cmd_kshmid },
709 { "kmsqid", "?[-l]", "display a struct kmsqid", cmd_kmsqid },
710 { "ksemid", "?[-l]", "display a struct ksemid", cmd_ksemid },
711 { "msg", ":[-l] [-t type]", "display contents of a message", msgprint },
712
713 /* Convenience routines */
714 { "id2shm", ":[-k]", "convert shared memory ID to pointer", id2shm },
715 { "id2msq", ":[-k]", "convert message queue ID to pointer", id2msq },
716 { "id2sem", ":[-k]", "convert semaphore ID to pointer", id2sem },
717
718 { "ipcs", "[-l]", "display System V IPC information", ipcs },
719 { NULL }
720 };
721
722 static const mdb_walker_t walkers[] = {
723 { "ipcsvc", "walk a System V IPC service",
724 ds_walk_init, ds_walk_step },
725 { "shm", "walk the active shmid_ds structures",
726 ds_walk_init, ds_walk_step, NULL, &shm_ops_vec },
727 { "msq", "walk the active msqid_ds structures",
728 ds_walk_init, ds_walk_step, NULL, &msq_ops_vec },
729 { "sem", "walk the active semid_ds structures",
730 ds_walk_init, ds_walk_step, NULL, &sem_ops_vec },
731 { "msgqueue", "walk messages on a message queue",
732 msg_walk_init, msg_walk_step },
733 { NULL }
734 };
735
736 static const mdb_modinfo_t modinfo = { MDB_API_VERSION, dcmds, walkers };
737
738 const mdb_modinfo_t *
739 _mdb_init(void)
740 {
741 return (&modinfo);
742 }
unleashed repo fork