xref: /dragonfly/sbin/hammer2/cmd_debug.c (revision cab8bf9b)
1 /*
2  * Copyright (c) 2011-2012 The DragonFly Project.  All rights reserved.
3  *
4  * This code is derived from software contributed to The DragonFly Project
5  * by Matthew Dillon <dillon@dragonflybsd.org>
6  * by Venkatesh Srinivas <vsrinivas@dragonflybsd.org>
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  *
12  * 1. Redistributions of source code must retain the above copyright
13  *    notice, this list of conditions and the following disclaimer.
14  * 2. Redistributions in binary form must reproduce the above copyright
15  *    notice, this list of conditions and the following disclaimer in
16  *    the documentation and/or other materials provided with the
17  *    distribution.
18  * 3. Neither the name of The DragonFly Project nor the names of its
19  *    contributors may be used to endorse or promote products derived
20  *    from this software without specific, prior written permission.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
24  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
25  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
26  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
27  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
28  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
29  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
30  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
31  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
32  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33  * SUCH DAMAGE.
34  */
35 
36 #include "hammer2.h"
37 
38 #define SHOW_TAB	2
39 
40 static void shell_msghandler(dmsg_msg_t *msg, int unmanaged);
41 static void shell_ttymsg(dmsg_iocom_t *iocom);
42 
43 /************************************************************************
44  *				    SHELL				*
45  ************************************************************************/
46 
47 int
48 cmd_shell(const char *hostname)
49 {
50 	dmsg_master_service_info_t *info;
51 	pthread_t thread;
52 	int fd;
53 
54 	fd = dmsg_connect(hostname);
55 	if (fd < 0)
56 		return 1;
57 
58 	info = malloc(sizeof(*info));
59 	bzero(info, sizeof(*info));
60 	info->fd = fd;
61 	info->detachme = 0;
62 	info->usrmsg_callback = shell_msghandler;
63 	info->altmsg_callback = shell_ttymsg;
64 	info->label = strdup("debug");
65 	pthread_create(&thread, NULL, dmsg_master_service, info);
66 	pthread_join(thread, NULL);
67 
68 	return 0;
69 }
70 
71 #if 0
72 int
73 cmd_shell(const char *hostname)
74 {
75 	struct dmsg_iocom iocom;
76 	dmsg_msg_t *msg;
77 	int fd;
78 
79 	/*
80 	 * Connect to the target
81 	 */
82 	fd = dmsg_connect(hostname);
83 	if (fd < 0)
84 		return 1;
85 
86 	/*
87 	 * Initialize the session and transmit an empty DMSG_DBG_SHELL
88 	 * to cause the remote end to generate a prompt.
89 	 */
90 	dmsg_iocom_init(&iocom, fd, 0,
91 			NULL,
92 			shell_rcvmsg,
93 			hammer2_shell_parse,
94 			shell_ttymsg);
95 	fcntl(0, F_SETFL, O_NONBLOCK);
96 	printf("debug: connected\n");
97 
98 	msg = dmsg_msg_alloc(&iocom.state0, 0, DMSG_DBG_SHELL, NULL, NULL);
99 	dmsg_msg_write(msg);
100 	dmsg_iocom_core(&iocom);
101 	fprintf(stderr, "debug: disconnected\n");
102 	close(fd);
103 	return 0;
104 }
105 #endif
106 
107 /*
108  * Debug session front-end
109  *
110  * Callback from dmsg_iocom_core() when messages might be present
111  * on the socket.
112  */
113 static
114 void
115 shell_msghandler(dmsg_msg_t *msg, int unmanaged)
116 {
117 	dmsg_msg_t *nmsg;
118 
119 	switch(msg->tcmd) {
120 #if 0
121 	case DMSG_LNK_ERROR:
122 	case DMSG_LNK_ERROR | DMSGF_REPLY:
123 		/*
124 		 * One-way non-transactional LNK_ERROR messages typically
125 		 * indicate a connection failure.  Error code 0 is used by
126 		 * the debug shell to indicate no more results from last cmd.
127 		 */
128 		if (msg->any.head.error) {
129 			fprintf(stderr, "Stream failure: %s\n",
130 				dmsg_msg_str(msg));
131 		} else {
132 			write(1, "debug> ", 7);
133 		}
134 		break;
135 	case DMSG_LNK_ERROR | DMSGF_DELETE:
136 		/* ignore termination of LNK_CONN */
137 		break;
138 #endif
139 	case DMSG_DBG_SHELL:
140 		/*
141 		 * We send the commands, not accept them.
142 		 * (one-way message, not transactional)
143 		 */
144 		if (unmanaged)
145 			dmsg_msg_reply(msg, DMSG_ERR_NOSUPP);
146 		break;
147 	case DMSG_DBG_SHELL | DMSGF_REPLY:
148 		/*
149 		 * A reply from the remote is data we copy to stdout.
150 		 * (one-way message, not transactional)
151 		 */
152 		if (msg->aux_size) {
153 			msg->aux_data[msg->aux_size - 1] = 0;
154 			write(1, msg->aux_data, strlen(msg->aux_data));
155 		}
156 		break;
157 #if 1
158 	case DMSG_LNK_CONN | DMSGF_CREATE:
159 		fprintf(stderr, "Debug Shell received LNK_CONN\n");
160 		nmsg = dmsg_msg_alloc(&msg->state->iocom->state0, 0,
161 				      DMSG_DBG_SHELL,
162 				      NULL, NULL);
163 		dmsg_msg_write(nmsg);
164 		dmsg_msg_reply(msg, DMSG_ERR_NOSUPP);
165 		break;
166 	case DMSG_LNK_CONN | DMSGF_DELETE:
167 		break;
168 #endif
169 	default:
170 		/*
171 		 * Ignore any unknown messages, Terminate any unknown
172 		 * transactions with an error.
173 		 */
174 		fprintf(stderr, "Unknown message: %s\n", dmsg_msg_str(msg));
175 		if (unmanaged) {
176 			if (msg->any.head.cmd & DMSGF_CREATE)
177 				dmsg_msg_reply(msg, DMSG_ERR_NOSUPP);
178 			if (msg->any.head.cmd & DMSGF_DELETE)
179 				dmsg_msg_reply(msg, DMSG_ERR_NOSUPP);
180 		}
181 		break;
182 	}
183 }
184 
185 /*
186  * Debug session front-end
187  */
188 static
189 void
190 shell_ttymsg(dmsg_iocom_t *iocom)
191 {
192 	dmsg_state_t *pstate;
193 	dmsg_msg_t *msg;
194 	char buf[256];
195 	char *cmd;
196 	size_t len;
197 
198 	if (fgets(buf, sizeof(buf), stdin) != NULL) {
199 		if (buf[0] == '@') {
200 			pstate = dmsg_findspan(strtok(buf + 1, " \t\n"));
201 			cmd = strtok(NULL, "\n");
202 		} else {
203 			pstate = &iocom->state0;
204 			cmd = strtok(buf, "\n");
205 		}
206 		if (cmd && pstate) {
207 			len = strlen(cmd) + 1;
208 			msg = dmsg_msg_alloc(pstate, len, DMSG_DBG_SHELL,
209 					     NULL, NULL);
210 			bcopy(cmd, msg->aux_data, len);
211 			dmsg_msg_write(msg);
212 		} else if (cmd) {
213 			fprintf(stderr, "@msgid not found\n");
214 		} else {
215 			/*
216 			 * This should cause the remote end to generate
217 			 * a debug> prompt (and thus shows that there is
218 			 * connectivity).
219 			 */
220 			msg = dmsg_msg_alloc(pstate, 0, DMSG_DBG_SHELL,
221 					     NULL, NULL);
222 			dmsg_msg_write(msg);
223 		}
224 	} else if (feof(stdin)) {
225 		/*
226 		 * Set EOF flag without setting any error code for normal
227 		 * EOF.
228 		 */
229 		iocom->flags |= DMSG_IOCOMF_EOF;
230 	} else {
231 		clearerr(stdin);
232 	}
233 }
234 
235 /*
236  * Debug session back-end (on remote side)
237  */
238 static void shell_span(dmsg_msg_t *msg, char *cmdbuf);
239 
240 void
241 hammer2_shell_parse(dmsg_msg_t *msg, int unmanaged)
242 {
243 	dmsg_iocom_t *iocom = msg->state->iocom;
244 	char *cmdbuf;
245 	char *cmdp;
246 	uint32_t cmd;
247 
248 	/*
249 	 * Filter on debug shell commands only
250 	 */
251 	cmd = msg->any.head.cmd;
252 	if ((cmd & DMSGF_PROTOS) != DMSG_PROTO_DBG) {
253 		if (unmanaged)
254 			dmsg_msg_reply(msg, DMSG_ERR_NOSUPP);
255 		return;
256 	}
257 	if ((cmd & DMSGF_CMDSWMASK) != DMSG_DBG_SHELL) {
258 		if (unmanaged)
259 			dmsg_msg_reply(msg, DMSG_ERR_NOSUPP);
260 		return;
261 	}
262 
263 	/*
264 	 * Debug shell command
265 	 */
266 	cmdbuf = msg->aux_data;
267 	cmdp = strsep(&cmdbuf, " \t");
268 
269 	if (cmdp == NULL || *cmdp == 0) {
270 		;
271 	} else if (strcmp(cmdp, "span") == 0) {
272 		shell_span(msg, cmdbuf);
273 	} else if (strcmp(cmdp, "tree") == 0) {
274 		dmsg_shell_tree(iocom, cmdbuf); /* dump spanning tree */
275 	} else if (strcmp(cmdp, "help") == 0 || strcmp(cmdp, "?") == 0) {
276 		dmsg_printf(iocom, "help            Command help\n");
277 		dmsg_printf(iocom, "span <host>     Span to target host\n");
278 		dmsg_printf(iocom, "tree            Dump spanning tree\n");
279 		dmsg_printf(iocom, "@span <cmd>     Issue via circuit\n");
280 	} else {
281 		dmsg_printf(iocom, "Unrecognized command: %s\n", cmdp);
282 	}
283 	dmsg_printf(iocom, "debug> ");
284 }
285 
286 static void
287 shell_span(dmsg_msg_t *msg, char *cmdbuf)
288 {
289 	dmsg_iocom_t *iocom = msg->state->iocom;
290 	dmsg_master_service_info_t *info;
291 	const char *hostname = strsep(&cmdbuf, " \t");
292 	pthread_t thread;
293 	int fd;
294 
295 	/*
296 	 * Connect to the target
297 	 */
298 	if (hostname == NULL) {
299 		fd = -1;
300 	} else {
301 		fd = dmsg_connect(hostname);
302 	}
303 
304 	/*
305 	 * Start master service
306 	 */
307 	if (fd < 0) {
308 		dmsg_printf(iocom, "Connection to %s failed\n", hostname);
309 	} else {
310 		dmsg_printf(iocom, "Connected to %s\n", hostname);
311 
312 		info = malloc(sizeof(*info));
313 		bzero(info, sizeof(*info));
314 		info->fd = fd;
315 		info->detachme = 1;
316 		info->usrmsg_callback = hammer2_shell_parse;
317 		info->label = strdup("client");
318 
319 		pthread_create(&thread, NULL, dmsg_master_service, info);
320 		/*pthread_join(thread, &res);*/
321 	}
322 }
323 
324 /************************************************************************
325  *				DEBUGSPAN				*
326  ************************************************************************
327  *
328  * Connect to the target manually (not via the cluster list embedded in
329  * a hammer2 filesystem) and initiate the SPAN protocol.
330  */
331 int
332 cmd_debugspan(const char *hostname)
333 {
334 	pthread_t thread;
335 	int fd;
336 	void *res;
337 
338 	/*
339 	 * Connect to the target
340 	 */
341 	fd = dmsg_connect(hostname);
342 	if (fd < 0)
343 		return 1;
344 
345 	printf("debugspan: connected to %s, starting CONN/SPAN\n", hostname);
346 	pthread_create(&thread, NULL,
347 		       dmsg_master_service, (void *)(intptr_t)fd);
348 	pthread_join(thread, &res);
349 	return(0);
350 }
351 
352 /************************************************************************
353  *				    SHOW				*
354  ************************************************************************/
355 
356 static void show_bref(int fd, int tab, int bi, hammer2_blockref_t *bref,
357 			int dofreemap);
358 static void tabprintf(int tab, const char *ctl, ...);
359 
360 int
361 cmd_show(const char *devpath, int dofreemap)
362 {
363 	hammer2_blockref_t broot;
364 	hammer2_blockref_t best;
365 	hammer2_media_data_t media;
366 	int fd;
367 	int i;
368 	int best_i;
369 
370 	fd = open(devpath, O_RDONLY);
371 	if (fd < 0) {
372 		perror("open");
373 		return 1;
374 	}
375 
376 	/*
377 	 * Show the tree using the best volume header.
378 	 * -vvv will show the tree for all four volume headers.
379 	 */
380 	best_i = -1;
381 	bzero(&best, sizeof(best));
382 	for (i = 0; i < 4; ++i) {
383 		bzero(&broot, sizeof(broot));
384 		broot.type = HAMMER2_BREF_TYPE_VOLUME;
385 		broot.data_off = (i * HAMMER2_ZONE_BYTES64) |
386 				 HAMMER2_PBUFRADIX;
387 		lseek(fd, broot.data_off & ~HAMMER2_OFF_MASK_RADIX, 0);
388 		if (read(fd, &media, HAMMER2_PBUFSIZE) ==
389 		    (ssize_t)HAMMER2_PBUFSIZE) {
390 			broot.mirror_tid = media.voldata.mirror_tid;
391 			if (best_i < 0 || best.mirror_tid < broot.mirror_tid) {
392 				best_i = i;
393 				best = broot;
394 			}
395 			if (VerboseOpt >= 3)
396 				show_bref(fd, 0, i, &broot, dofreemap);
397 		}
398 	}
399 	if (VerboseOpt < 3)
400 		show_bref(fd, 0, best_i, &best, dofreemap);
401 	close(fd);
402 
403 	return 0;
404 }
405 
406 static void
407 show_bref(int fd, int tab, int bi, hammer2_blockref_t *bref, int dofreemap)
408 {
409 	hammer2_media_data_t media;
410 	hammer2_blockref_t *bscan;
411 	int bcount;
412 	int i;
413 	int didnl;
414 	int namelen;
415 	int obrace = 1;
416 	size_t bytes;
417 	const char *type_str;
418 	char *str = NULL;
419 
420 	switch(bref->type) {
421 	case HAMMER2_BREF_TYPE_EMPTY:
422 		type_str = "empty";
423 		break;
424 	case HAMMER2_BREF_TYPE_INODE:
425 		type_str = "inode";
426 		break;
427 	case HAMMER2_BREF_TYPE_INDIRECT:
428 		type_str = "indblk";
429 		break;
430 	case HAMMER2_BREF_TYPE_DATA:
431 		type_str = "data";
432 		break;
433 	case HAMMER2_BREF_TYPE_VOLUME:
434 		type_str = "volume";
435 		break;
436 	case HAMMER2_BREF_TYPE_FREEMAP:
437 		type_str = "freemap";
438 		break;
439 	case HAMMER2_BREF_TYPE_FREEMAP_NODE:
440 		type_str = "fmapnode";
441 		break;
442 	case HAMMER2_BREF_TYPE_FREEMAP_LEAF:
443 		type_str = "fbitmap";
444 		break;
445 	default:
446 		type_str = "unknown";
447 		break;
448 	}
449 
450 	tabprintf(tab, "%s.%-3d %016jx %016jx/%-2d mir=%016jx mod=%016jx ",
451 	       type_str, bi, (intmax_t)bref->data_off,
452 	       (intmax_t)bref->key, (intmax_t)bref->keybits,
453 	       (intmax_t)bref->mirror_tid, (intmax_t)bref->modify_tid);
454 	tab += SHOW_TAB;
455 
456 	bytes = (size_t)1 << (bref->data_off & HAMMER2_OFF_MASK_RADIX);
457 
458 	{
459 		hammer2_off_t io_off;
460 		hammer2_off_t io_base;
461 		size_t io_bytes;
462 		size_t boff;
463 
464 		io_off = bref->data_off & ~HAMMER2_OFF_MASK_RADIX;
465 		io_base = io_off & ~(hammer2_off_t)(HAMMER2_MINIOSIZE - 1);
466 		io_bytes = bytes;
467 		boff = io_off - io_base;
468 
469 		io_bytes = HAMMER2_MINIOSIZE;
470 		while (io_bytes + boff < bytes)
471 			io_bytes <<= 1;
472 
473 		if (io_bytes > sizeof(media)) {
474 			printf("(bad block size %zd)\n", bytes);
475 			return;
476 		}
477 		if (bref->type != HAMMER2_BREF_TYPE_DATA || VerboseOpt >= 1) {
478 			lseek(fd, io_base, 0);
479 			if (read(fd, &media, io_bytes) != (ssize_t)io_bytes) {
480 				printf("(media read failed)\n");
481 				return;
482 			}
483 			if (boff)
484 				bcopy((char *)&media + boff, &media, bytes);
485 		}
486 	}
487 
488 	bscan = NULL;
489 	bcount = 0;
490 	didnl = 1;
491 	namelen = 0;
492 
493 	switch(bref->type) {
494 	case HAMMER2_BREF_TYPE_EMPTY:
495 		obrace = 0;
496 		break;
497 	case HAMMER2_BREF_TYPE_INODE:
498 		printf("{\n");
499 		if (media.ipdata.op_flags & HAMMER2_OPFLAG_DIRECTDATA) {
500 			/* no blockrefs */
501 		} else {
502 			bscan = &media.ipdata.u.blockset.blockref[0];
503 			bcount = HAMMER2_SET_COUNT;
504 		}
505 		namelen = media.ipdata.name_len;
506 		if (namelen > HAMMER2_INODE_MAXNAME)
507 			namelen = 0;
508 		tabprintf(tab, "filename \"%*.*s\"\n",
509 			  namelen, namelen, media.ipdata.filename);
510 		tabprintf(tab, "version  %d\n", media.ipdata.version);
511 		tabprintf(tab, "uflags   0x%08x\n",
512 			  media.ipdata.uflags);
513 		if (media.ipdata.rmajor || media.ipdata.rminor) {
514 			tabprintf(tab, "rmajor   %d\n",
515 				  media.ipdata.rmajor);
516 			tabprintf(tab, "rminor   %d\n",
517 				  media.ipdata.rminor);
518 		}
519 		tabprintf(tab, "ctime    %s\n",
520 			  hammer2_time64_to_str(media.ipdata.ctime, &str));
521 		tabprintf(tab, "mtime    %s\n",
522 			  hammer2_time64_to_str(media.ipdata.mtime, &str));
523 		tabprintf(tab, "atime    %s\n",
524 			  hammer2_time64_to_str(media.ipdata.atime, &str));
525 		tabprintf(tab, "btime    %s\n",
526 			  hammer2_time64_to_str(media.ipdata.btime, &str));
527 		tabprintf(tab, "uid      %s\n",
528 			  hammer2_uuid_to_str(&media.ipdata.uid, &str));
529 		tabprintf(tab, "gid      %s\n",
530 			  hammer2_uuid_to_str(&media.ipdata.gid, &str));
531 		if (media.ipdata.type == HAMMER2_OBJTYPE_HARDLINK)
532 			tabprintf(tab, "type     %s (%s)\n",
533 			      hammer2_iptype_to_str(media.ipdata.type),
534 			      hammer2_iptype_to_str(media.ipdata.target_type));
535 		else
536 			tabprintf(tab, "type     %s\n",
537 				  hammer2_iptype_to_str(media.ipdata.type));
538 		tabprintf(tab, "opflgs   0x%02x\n",
539 			  media.ipdata.op_flags);
540 		tabprintf(tab, "capflgs  0x%04x\n",
541 			  media.ipdata.cap_flags);
542 		tabprintf(tab, "mode     %-7o\n",
543 			  media.ipdata.mode);
544 		tabprintf(tab, "inum     0x%016jx\n",
545 			  media.ipdata.inum);
546 		tabprintf(tab, "size     %ju\n",
547 			  (uintmax_t)media.ipdata.size);
548 		tabprintf(tab, "nlinks   %ju\n",
549 			  (uintmax_t)media.ipdata.nlinks);
550 		tabprintf(tab, "iparent  0x%016jx\n",
551 			  (uintmax_t)media.ipdata.iparent);
552 		tabprintf(tab, "name_key 0x%016jx\n",
553 			  (uintmax_t)media.ipdata.name_key);
554 		tabprintf(tab, "name_len %u\n",
555 			  media.ipdata.name_len);
556 		tabprintf(tab, "ncopies  %u\n",
557 			  media.ipdata.ncopies);
558 		tabprintf(tab, "compalg  %u\n",
559 			  media.ipdata.comp_algo);
560 		if (media.ipdata.op_flags & HAMMER2_OPFLAG_PFSROOT) {
561 			tabprintf(tab, "pfs_type %u (%s)\n",
562 				  media.ipdata.pfs_type,
563 				  hammer2_pfstype_to_str(media.ipdata.pfs_type));
564 			tabprintf(tab, "pfs_inum 0x%016jx\n",
565 				  (uintmax_t)media.ipdata.pfs_inum);
566 			tabprintf(tab, "pfs_clid %s\n",
567 				  hammer2_uuid_to_str(&media.ipdata.pfs_clid,
568 						      &str));
569 			tabprintf(tab, "pfs_fsid %s\n",
570 				  hammer2_uuid_to_str(&media.ipdata.pfs_fsid,
571 						      &str));
572 		}
573 		tabprintf(tab, "data_quota  %ju\n",
574 			  (uintmax_t)media.ipdata.data_quota);
575 		tabprintf(tab, "data_count  %ju\n",
576 			  (uintmax_t)media.ipdata.data_count);
577 		tabprintf(tab, "inode_quota %ju\n",
578 			  (uintmax_t)media.ipdata.inode_quota);
579 		tabprintf(tab, "inode_count %ju\n",
580 			  (uintmax_t)media.ipdata.inode_count);
581 		tabprintf(tab, "attr_tid    0x%016jx\n",
582 			  (uintmax_t)media.ipdata.attr_tid);
583 		if (media.ipdata.type == HAMMER2_OBJTYPE_DIRECTORY) {
584 			tabprintf(tab, "dirent_tid  %016jx\n",
585 				  (uintmax_t)media.ipdata.dirent_tid);
586 		}
587 		break;
588 	case HAMMER2_BREF_TYPE_INDIRECT:
589 		bscan = &media.npdata[0];
590 		bcount = bytes / sizeof(hammer2_blockref_t);
591 		didnl = 1;
592 		printf("{\n");
593 		break;
594 	case HAMMER2_BREF_TYPE_DATA:
595 		if (VerboseOpt >= 2) {
596 			printf("{\n");
597 		} else {
598 			printf("\n");
599 			obrace = 0;
600 		}
601 		break;
602 	case HAMMER2_BREF_TYPE_VOLUME:
603 		printf("mirror_tid=%016jx freemap_tid=%016jx ",
604 			media.voldata.mirror_tid,
605 			media.voldata.freemap_tid);
606 		if (dofreemap) {
607 			bscan = &media.voldata.freemap_blockset.blockref[0];
608 			bcount = HAMMER2_SET_COUNT;
609 		} else {
610 			bscan = &media.voldata.sroot_blockset.blockref[0];
611 			bcount = HAMMER2_SET_COUNT;
612 		}
613 		printf("{\n");
614 		break;
615 	case HAMMER2_BREF_TYPE_FREEMAP_LEAF:
616 		printf("{\n");
617 		for (i = 0; i < HAMMER2_FREEMAP_COUNT; ++i) {
618 			if (media.bmdata[i].class == 0 &&
619 			    media.bmdata[i].avail == 0) {
620 				continue;
621 			}
622 			tabprintf(tab + 4, "%04d.%04x (avail=%5d) "
623 				  "%08x %08x %08x %08x %08x %08x %08x %08x\n",
624 				  i, media.bmdata[i].class,
625 				  media.bmdata[i].avail,
626 				  media.bmdata[i].bitmap[0],
627 				  media.bmdata[i].bitmap[1],
628 				  media.bmdata[i].bitmap[2],
629 				  media.bmdata[i].bitmap[3],
630 				  media.bmdata[i].bitmap[4],
631 				  media.bmdata[i].bitmap[5],
632 				  media.bmdata[i].bitmap[6],
633 				  media.bmdata[i].bitmap[7]);
634 		}
635 		tabprintf(tab, "}\n");
636 		break;
637 	case HAMMER2_BREF_TYPE_FREEMAP_NODE:
638 		printf("{\n");
639 		bscan = &media.npdata[0];
640 		bcount = bytes / sizeof(hammer2_blockref_t);
641 		break;
642 	default:
643 		printf("\n");
644 		obrace = 0;
645 		break;
646 	}
647 	if (str)
648 		free(str);
649 	for (i = 0; i < bcount; ++i) {
650 		if (bscan[i].type != HAMMER2_BREF_TYPE_EMPTY) {
651 			if (didnl == 0) {
652 				printf("\n");
653 				didnl = 1;
654 			}
655 			show_bref(fd, tab, i, &bscan[i], dofreemap);
656 		}
657 	}
658 	tab -= SHOW_TAB;
659 	if (obrace) {
660 		if (bref->type == HAMMER2_BREF_TYPE_INODE)
661 			tabprintf(tab, "} (%s.%d, \"%*.*s\")\n",
662 				  type_str, bi,
663 				  namelen, namelen, media.ipdata.filename);
664 		else
665 			tabprintf(tab, "} (%s.%d)\n", type_str,bi);
666 	}
667 }
668 
669 int
670 cmd_hash(int ac, const char **av)
671 {
672 	int i;
673 
674 	for (i = 0; i < ac; ++i) {
675 		printf("%016jx %s\n", dirhash(av[i], strlen(av[i])), av[i]);
676 	}
677 	return(0);
678 }
679 
680 int
681 cmd_chaindump(const char *path)
682 {
683 	int dummy = 0;
684 	int fd;
685 
686 	fd = open(path, O_RDONLY);
687 	if (fd >= 0) {
688 		ioctl(fd, HAMMER2IOC_DEBUG_DUMP, &dummy);
689 		close(fd);
690 	} else {
691 		fprintf(stderr, "unable to open %s\n", path);
692 	}
693 	return 0;
694 }
695 
696 
697 static
698 void
699 tabprintf(int tab, const char *ctl, ...)
700 {
701 	va_list va;
702 
703 	printf("%*.*s", tab, tab, "");
704 	va_start(va, ctl);
705 	vprintf(ctl, va);
706 	va_end(va);
707 }
708