hammer2 - SPAN protocol work, router work
[dragonfly.git] / sbin / hammer2 / cmd_debug.c
CommitLineData
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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
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38#define SHOW_TAB 2
39
29ead430 40static void shell_rcvmsg(hammer2_msg_t *msg);
5903497c 41static void shell_ttymsg(hammer2_iocom_t *iocom);
29ead430 42static void hammer2_shell_parse(hammer2_msg_t *msg);
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43
44/************************************************************************
45 * SHELL *
46 ************************************************************************/
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47
48int
bd878fc9 49cmd_shell(const char *hostname)
9ab15106 50{
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51 struct hammer2_iocom iocom;
52 hammer2_msg_t *msg;
53 int fd;
54
55 /*
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56 * Connect to the target
57 */
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58 fd = hammer2_connect(hostname);
59 if (fd < 0)
60 return 1;
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61
62 /*
63 * Run the session. The remote end transmits our prompt.
64 */
5903497c 65 hammer2_iocom_init(&iocom, fd, 0, NULL, shell_rcvmsg, shell_ttymsg);
02454b3e 66 fcntl(0, F_SETFL, O_NONBLOCK);
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67 printf("debug: connected\n");
68
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69 msg = hammer2_msg_alloc(&iocom.router, 0, HAMMER2_DBG_SHELL,
70 NULL, NULL);
71 hammer2_msg_write(msg);
5903497c 72 hammer2_iocom_core(&iocom);
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73 fprintf(stderr, "debug: disconnected\n");
74 close(fd);
75 return 0;
76}
77
78/*
79 * Callback from hammer2_iocom_core() when messages might be present
80 * on the socket.
81 */
82static
83void
29ead430 84shell_rcvmsg(hammer2_msg_t *msg)
9ab15106 85{
81666e1b 86 switch(msg->any.head.cmd & HAMMER2_MSGF_TRANSMASK) {
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87 case HAMMER2_LNK_ERROR:
88 case HAMMER2_LNK_ERROR | HAMMER2_MSGF_REPLY:
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89 /*
90 * One-way non-transactional LNK_ERROR messages typically
91 * indicate a connection failure. Error code 0 is used by
92 * the debug shell to indicate no more results from last cmd.
93 */
5903497c 94 if (msg->any.head.error) {
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95 fprintf(stderr, "Stream failure: %s\n",
96 hammer2_msg_str(msg));
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97 } else {
98 write(1, "debug> ", 7);
9ab15106 99 }
5903497c 100 break;
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101 case HAMMER2_LNK_ERROR | HAMMER2_MSGF_DELETE:
102 /* ignore termination of LNK_CONN */
103 break;
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104 case HAMMER2_DBG_SHELL:
105 /*
106 * We send the commands, not accept them.
81666e1b 107 * (one-way message, not transactional)
5903497c 108 */
29ead430 109 hammer2_msg_reply(msg, HAMMER2_MSG_ERR_NOSUPP);
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110 break;
111 case HAMMER2_DBG_SHELL | HAMMER2_MSGF_REPLY:
112 /*
113 * A reply from the remote is data we copy to stdout.
81666e1b 114 * (one-way message, not transactional)
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115 */
116 if (msg->aux_size) {
117 msg->aux_data[msg->aux_size - 1] = 0;
118 write(1, msg->aux_data, strlen(msg->aux_data));
119 }
120 break;
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121 case HAMMER2_LNK_CONN | HAMMER2_MSGF_CREATE:
122 fprintf(stderr, "Debug Shell is ignoring received LNK_CONN\n");
29ead430 123 hammer2_msg_reply(msg, HAMMER2_MSG_ERR_NOSUPP);
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124 break;
125 case HAMMER2_LNK_CONN | HAMMER2_MSGF_DELETE:
126 break;
5903497c 127 default:
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128 /*
129 * Ignore any unknown messages, Terminate any unknown
130 * transactions with an error.
131 */
132 fprintf(stderr, "Unknown message: %s\n", hammer2_msg_str(msg));
133 if (msg->any.head.cmd & HAMMER2_MSGF_CREATE)
29ead430 134 hammer2_msg_reply(msg, HAMMER2_MSG_ERR_NOSUPP);
81666e1b 135 if (msg->any.head.cmd & HAMMER2_MSGF_DELETE)
29ead430 136 hammer2_msg_reply(msg, HAMMER2_MSG_ERR_NOSUPP);
5903497c 137 break;
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138 }
139}
140
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141static
142void
5903497c 143shell_ttymsg(hammer2_iocom_t *iocom)
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144{
145 hammer2_msg_t *msg;
146 char buf[256];
147 size_t len;
148
149 if (fgets(buf, sizeof(buf), stdin) != NULL) {
150 len = strlen(buf);
151 if (len && buf[len - 1] == '\n')
152 buf[--len] = 0;
153 ++len;
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154 msg = hammer2_msg_alloc(&iocom->router, len, HAMMER2_DBG_SHELL,
155 NULL, NULL);
9ab15106 156 bcopy(buf, msg->aux_data, len);
29ead430 157 hammer2_msg_write(msg);
02454b3e 158 } else if (feof(stdin)) {
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159 /*
160 * Set EOF flag without setting any error code for normal
161 * EOF.
162 */
163 iocom->flags |= HAMMER2_IOCOMF_EOF;
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164 } else {
165 clearerr(stdin);
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166 }
167}
168
169/*
170 * This is called from the master node to process a received debug
171 * shell command. We process the command, outputting the results,
172 * then finish up by outputting another prompt.
173 */
174void
29ead430 175hammer2_msg_dbg(hammer2_msg_t *msg)
9ab15106 176{
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177 switch(msg->any.head.cmd & HAMMER2_MSGF_CMDSWMASK) {
178 case HAMMER2_DBG_SHELL:
179 /*
180 * This is a command which we must process.
181 * When we are finished we generate a final reply.
182 */
183 if (msg->aux_data)
184 msg->aux_data[msg->aux_size - 1] = 0;
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185 hammer2_shell_parse(msg);
186 hammer2_msg_reply(msg, 0);
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187 break;
188 case HAMMER2_DBG_SHELL | HAMMER2_MSGF_REPLY:
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189 /*
190 * A reply just prints out the string. No newline is added
191 * (it is expected to be embedded if desired).
192 */
193 if (msg->aux_data)
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194 msg->aux_data[msg->aux_size - 1] = 0;
195 if (msg->aux_data)
9ab15106 196 write(2, msg->aux_data, strlen(msg->aux_data));
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197 break;
198 default:
29ead430 199 hammer2_msg_reply(msg, HAMMER2_MSG_ERR_NOSUPP);
8c280d5d 200 break;
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201 }
202}
203
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204static void shell_span(hammer2_router_t *router, char *cmdbuf);
205/*static void shell_tree(hammer2_router_t *router, char *cmdbuf);*/
81666e1b 206
9ab15106 207static void
29ead430 208hammer2_shell_parse(hammer2_msg_t *msg)
9ab15106 209{
29ead430 210 hammer2_router_t *router = msg->router;
78476205 211 char *cmdbuf = msg->aux_data;
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212 char *cmd = strsep(&cmdbuf, " \t");
213
214 if (cmd == NULL || *cmd == 0) {
215 ;
02454b3e 216 } else if (strcmp(cmd, "span") == 0) {
29ead430 217 shell_span(router, cmdbuf);
81666e1b 218 } else if (strcmp(cmd, "tree") == 0) {
29ead430 219 shell_tree(router, cmdbuf);
81666e1b 220 } else if (strcmp(cmd, "help") == 0 || strcmp(cmd, "?") == 0) {
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221 router_printf(router, "help Command help\n");
222 router_printf(router, "span <host> Span to target host\n");
223 router_printf(router, "tree Dump spanning tree\n");
81666e1b 224 } else {
29ead430 225 router_printf(router, "Unrecognized command: %s\n", cmd);
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226 }
227}
02454b3e 228
81666e1b 229static void
29ead430 230shell_span(hammer2_router_t *router, char *cmdbuf)
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231{
232 const char *hostname = strsep(&cmdbuf, " \t");
233 pthread_t thread;
234 int fd;
02454b3e 235
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236 /*
237 * Connect to the target
238 */
239 if (hostname == NULL) {
240 fd = -1;
241 } else {
242 fd = hammer2_connect(hostname);
243 }
244
245 /*
246 * Start master service
247 */
248 if (fd < 0) {
29ead430 249 router_printf(router, "Connection to %s failed\n", hostname);
9ab15106 250 } else {
29ead430 251 router_printf(router, "Connected to %s\n", hostname);
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252 pthread_create(&thread, NULL,
253 master_service, (void *)(intptr_t)fd);
254 /*pthread_join(thread, &res);*/
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255 }
256}
257
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258/*
259 * Returns text debug output to the original defined by (msg). (msg) is
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260 * not modified and stays intact. We use a one-way message with REPLY set
261 * to distinguish between a debug command and debug terminal output.
262 *
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263 * To prevent loops router_printf() can filter the message (cmd) related
264 * to the router_printf(). We filter out DBG messages.
4a2e0eae 265 */
9ab15106 266void
29ead430 267router_printf(hammer2_router_t *router, const char *ctl, ...)
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268{
269 hammer2_msg_t *rmsg;
270 va_list va;
271 char buf[1024];
272 size_t len;
273
274 va_start(va, ctl);
275 vsnprintf(buf, sizeof(buf), ctl, va);
276 va_end(va);
277 len = strlen(buf) + 1;
278
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279 rmsg = hammer2_msg_alloc(router, len, HAMMER2_DBG_SHELL |
280 HAMMER2_MSGF_REPLY,
281 NULL, NULL);
9ab15106 282 bcopy(buf, rmsg->aux_data, len);
9ab15106 283
29ead430 284 hammer2_msg_write(rmsg);
9ab15106 285}
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286
287/************************************************************************
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288 * DEBUGSPAN *
289 ************************************************************************
290 *
291 * Connect to the target manually (not via the cluster list embedded in
292 * a hammer2 filesystem) and initiate the SPAN protocol.
293 */
294int
295cmd_debugspan(const char *hostname)
296{
297 pthread_t thread;
298 int fd;
299 void *res;
300
301 /*
302 * Connect to the target
303 */
304 fd = hammer2_connect(hostname);
305 if (fd < 0)
306 return 1;
307
308 printf("debugspan: connected to %s, starting CONN/SPAN\n", hostname);
309 pthread_create(&thread, NULL, master_service, (void *)(intptr_t)fd);
310 pthread_join(thread, &res);
311 return(0);
312}
313
314/************************************************************************
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315 * SHOW *
316 ************************************************************************/
317
318static void show_bref(int fd, int tab, int bi, hammer2_blockref_t *bref);
319static void tabprintf(int tab, const char *ctl, ...);
320
321int
322cmd_show(const char *devpath)
323{
324 hammer2_blockref_t broot;
325 int fd;
326
327 fd = open(devpath, O_RDONLY);
328 if (fd < 0) {
329 perror("open");
330 return 1;
331 }
332 bzero(&broot, sizeof(broot));
333 broot.type = HAMMER2_BREF_TYPE_VOLUME;
334 broot.data_off = 0 | HAMMER2_PBUFRADIX;
335 show_bref(fd, 0, 0, &broot);
336 close(fd);
337
338 return 0;
339}
340
341static void
342show_bref(int fd, int tab, int bi, hammer2_blockref_t *bref)
343{
344 hammer2_media_data_t media;
345 hammer2_blockref_t *bscan;
346 int bcount;
347 int i;
348 int didnl;
ad7cf8ea 349 int namelen;
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350 int obrace = 1;
351 size_t bytes;
352 const char *type_str;
353 char *str = NULL;
354
355 switch(bref->type) {
356 case HAMMER2_BREF_TYPE_EMPTY:
357 type_str = "empty";
358 break;
359 case HAMMER2_BREF_TYPE_INODE:
360 type_str = "inode";
361 break;
362 case HAMMER2_BREF_TYPE_INDIRECT:
363 type_str = "indblk";
364 break;
365 case HAMMER2_BREF_TYPE_DATA:
366 type_str = "data";
367 break;
368 case HAMMER2_BREF_TYPE_VOLUME:
369 type_str = "volume";
370 break;
371 default:
372 type_str = "unknown";
373 break;
374 }
375
376
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377 tabprintf(tab, "%s.%-3d %016jx %016jx/%-2d mir=%016jx mod=%016jx ",
378 type_str, bi, (intmax_t)bref->data_off,
379 (intmax_t)bref->key, (intmax_t)bref->keybits,
380 (intmax_t)bref->mirror_tid, (intmax_t)bref->modify_tid);
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381 tab += SHOW_TAB;
382
383 bytes = (size_t)1 << (bref->data_off & HAMMER2_OFF_MASK_RADIX);
ad7cf8ea 384 if (bytes < HAMMER2_MINIOSIZE || bytes > sizeof(media)) {
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385 printf("(bad block size %zd)\n", bytes);
386 return;
387 }
388 if (bref->type != HAMMER2_BREF_TYPE_DATA || VerboseOpt >= 1) {
389 lseek(fd, bref->data_off & ~HAMMER2_OFF_MASK_RADIX, 0);
390 if (read(fd, &media, bytes) != (ssize_t)bytes) {
391 printf("(media read failed)\n");
392 return;
393 }
394 }
395
396 bscan = NULL;
397 bcount = 0;
398 didnl = 0;
399
400 switch(bref->type) {
401 case HAMMER2_BREF_TYPE_EMPTY:
402 obrace = 0;
403 break;
404 case HAMMER2_BREF_TYPE_INODE:
405 printf("{\n");
406 if (media.ipdata.op_flags & HAMMER2_OPFLAG_DIRECTDATA) {
407 /* no blockrefs */
408 } else {
409 bscan = &media.ipdata.u.blockset.blockref[0];
410 bcount = HAMMER2_SET_COUNT;
411 }
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412 namelen = media.ipdata.name_len;
413 if (namelen > HAMMER2_INODE_MAXNAME)
414 namelen = 0;
415 tabprintf(tab, "filename \"%*.*s\"\n",
416 namelen, namelen, media.ipdata.filename);
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417 tabprintf(tab, "version %d\n", media.ipdata.version);
418 tabprintf(tab, "uflags 0x%08x\n",
419 media.ipdata.uflags);
420 if (media.ipdata.rmajor || media.ipdata.rminor) {
421 tabprintf(tab, "rmajor %d\n",
422 media.ipdata.rmajor);
423 tabprintf(tab, "rminor %d\n",
424 media.ipdata.rminor);
425 }
426 tabprintf(tab, "ctime %s\n",
427 hammer2_time64_to_str(media.ipdata.ctime, &str));
428 tabprintf(tab, "mtime %s\n",
429 hammer2_time64_to_str(media.ipdata.mtime, &str));
430 tabprintf(tab, "atime %s\n",
431 hammer2_time64_to_str(media.ipdata.atime, &str));
432 tabprintf(tab, "btime %s\n",
433 hammer2_time64_to_str(media.ipdata.btime, &str));
434 tabprintf(tab, "uid %s\n",
435 hammer2_uuid_to_str(&media.ipdata.uid, &str));
436 tabprintf(tab, "gid %s\n",
437 hammer2_uuid_to_str(&media.ipdata.gid, &str));
438 tabprintf(tab, "type %s\n",
439 hammer2_iptype_to_str(media.ipdata.type));
440 tabprintf(tab, "opflgs 0x%02x\n",
441 media.ipdata.op_flags);
442 tabprintf(tab, "capflgs 0x%04x\n",
443 media.ipdata.cap_flags);
444 tabprintf(tab, "mode %-7o\n",
445 media.ipdata.mode);
446 tabprintf(tab, "inum 0x%016jx\n",
447 media.ipdata.inum);
448 tabprintf(tab, "size %ju\n",
449 (uintmax_t)media.ipdata.size);
450 tabprintf(tab, "nlinks %ju\n",
451 (uintmax_t)media.ipdata.nlinks);
452 tabprintf(tab, "iparent 0x%016jx\n",
453 (uintmax_t)media.ipdata.iparent);
454 tabprintf(tab, "name_key 0x%016jx\n",
455 (uintmax_t)media.ipdata.name_key);
456 tabprintf(tab, "name_len %u\n",
457 media.ipdata.name_len);
458 tabprintf(tab, "ncopies %u\n",
459 media.ipdata.ncopies);
460 tabprintf(tab, "compalg %u\n",
461 media.ipdata.comp_algo);
462 if (media.ipdata.op_flags & HAMMER2_OPFLAG_PFSROOT) {
463 tabprintf(tab, "pfs_type %u (%s)\n",
464 media.ipdata.pfs_type,
465 hammer2_pfstype_to_str(media.ipdata.pfs_type));
466 tabprintf(tab, "pfs_inum 0x%016jx\n",
467 (uintmax_t)media.ipdata.pfs_inum);
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468 tabprintf(tab, "pfs_clid %s\n",
469 hammer2_uuid_to_str(&media.ipdata.pfs_clid,
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470 &str));
471 tabprintf(tab, "pfs_fsid %s\n",
472 hammer2_uuid_to_str(&media.ipdata.pfs_fsid,
473 &str));
474 }
475 tabprintf(tab, "data_quota %ju\n",
476 (uintmax_t)media.ipdata.data_quota);
477 tabprintf(tab, "data_count %ju\n",
478 (uintmax_t)media.ipdata.data_count);
479 tabprintf(tab, "inode_quota %ju\n",
480 (uintmax_t)media.ipdata.inode_quota);
481 tabprintf(tab, "inode_count %ju\n",
482 (uintmax_t)media.ipdata.inode_count);
483 tabprintf(tab, "attr_tid 0x%016jx\n",
484 (uintmax_t)media.ipdata.attr_tid);
485 if (media.ipdata.type == HAMMER2_OBJTYPE_DIRECTORY) {
486 tabprintf(tab, "dirent_tid %016jx\n",
487 (uintmax_t)media.ipdata.dirent_tid);
488 }
489 break;
490 case HAMMER2_BREF_TYPE_INDIRECT:
491 bscan = &media.npdata.blockref[0];
492 bcount = bytes / sizeof(hammer2_blockref_t);
493 didnl = 1;
494 printf("{\n");
495 break;
496 case HAMMER2_BREF_TYPE_DATA:
497 if (VerboseOpt >= 2) {
498 printf("{\n");
499 } else {
500 printf("\n");
501 obrace = 0;
502 }
503 break;
504 case HAMMER2_BREF_TYPE_VOLUME:
505 bscan = &media.voldata.sroot_blockset.blockref[0];
506 bcount = HAMMER2_SET_COUNT;
507 printf("{\n");
508 break;
509 default:
510 break;
511 }
512 if (str)
513 free(str);
514 for (i = 0; i < bcount; ++i) {
515 if (bscan[i].type != HAMMER2_BREF_TYPE_EMPTY) {
516 if (didnl == 0) {
517 printf("\n");
518 didnl = 1;
519 }
520 show_bref(fd, tab, i, &bscan[i]);
521 }
522 }
523 tab -= SHOW_TAB;
524 if (obrace) {
525 if (bref->type == HAMMER2_BREF_TYPE_INODE)
526 tabprintf(tab, "} (%s.%d, \"%s\")\n",
527 type_str, bi, media.ipdata.filename);
528 else
529 tabprintf(tab, "} (%s.%d)\n", type_str,bi);
530 }
531}
532
533static
534void
535tabprintf(int tab, const char *ctl, ...)
536{
537 va_list va;
538
539 printf("%*.*s", tab, tab, "");
540 va_start(va, ctl);
541 vprintf(ctl, va);
542 va_end(va);
543}