hammer2 - spanning tree and messaging 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
40static void shell_recv(hammer2_iocom_t *iocom);
41static void shell_send(hammer2_iocom_t *iocom);
42static void shell_tty(hammer2_iocom_t *iocom);
78476205 43static void hammer2_shell_parse(hammer2_iocom_t *iocom, hammer2_msg_t *msg);
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44
45/************************************************************************
46 * SHELL *
47 ************************************************************************/
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48
49int
bd878fc9 50cmd_shell(const char *hostname)
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51{
52 struct sockaddr_in lsin;
53 struct hammer2_iocom iocom;
54 hammer2_msg_t *msg;
62efe6ec 55 struct hostent *hen;
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56 int fd;
57
58 /*
59 * Acquire socket and set options
60 */
61 if ((fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
62 fprintf(stderr, "cmd_debug: socket(): %s\n",
63 strerror(errno));
64 return 1;
65 }
66
67 /*
68 * Connect to the target
69 */
70 bzero(&lsin, sizeof(lsin));
71 lsin.sin_family = AF_INET;
72 lsin.sin_addr.s_addr = 0;
73 lsin.sin_port = htons(HAMMER2_LISTEN_PORT);
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74
75 if (hostname) {
76 hen = gethostbyname2(hostname, AF_INET);
77 if (hen == NULL) {
78 if (inet_pton(AF_INET, hostname, &lsin.sin_addr) != 1) {
79 fprintf(stderr,
80 "Cannot resolve %s\n", hostname);
81 return 1;
82 }
83 } else {
84 bcopy(hen->h_addr, &lsin.sin_addr, hen->h_length);
85 }
86 }
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87 if (connect(fd, (struct sockaddr *)&lsin, sizeof(lsin)) < 0) {
88 close(fd);
89 fprintf(stderr, "debug: connect failed: %s\n",
90 strerror(errno));
91 return 0;
92 }
93
94 /*
95 * Run the session. The remote end transmits our prompt.
96 */
97 hammer2_iocom_init(&iocom, fd, 0);
98 printf("debug: connected\n");
99
78476205 100 msg = hammer2_msg_alloc(&iocom, 0, HAMMER2_DBG_SHELL);
7dc0f844 101 hammer2_msg_write(&iocom, msg, NULL, NULL, NULL);
9ab15106 102
bd878fc9 103 hammer2_iocom_core(&iocom, shell_recv, shell_send, shell_tty);
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104 fprintf(stderr, "debug: disconnected\n");
105 close(fd);
106 return 0;
107}
108
109/*
110 * Callback from hammer2_iocom_core() when messages might be present
111 * on the socket.
112 */
113static
114void
bd878fc9 115shell_recv(hammer2_iocom_t *iocom)
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116{
117 hammer2_msg_t *msg;
118
119 while ((iocom->flags & HAMMER2_IOCOMF_EOF) == 0 &&
120 (msg = hammer2_ioq_read(iocom)) != NULL) {
4a2e0eae 121
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122 switch(msg->any.head.cmd & HAMMER2_MSGF_CMDSWMASK) {
123 case HAMMER2_LNK_ERROR:
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124 case HAMMER2_LNK_ERROR | HAMMER2_MSGF_REPLY:
125 if (msg->any.head.error) {
126 fprintf(stderr,
127 "Link Error: %d\n",
128 msg->any.head.error);
129 } else {
130 write(1, "debug> ", 7);
131 }
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132 break;
133 case HAMMER2_DBG_SHELL:
134 /*
135 * We send the commands, not accept them.
136 */
78476205 137 hammer2_msg_reply(iocom, msg, HAMMER2_MSG_ERR_UNKNOWN);
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138 break;
139 case HAMMER2_DBG_SHELL | HAMMER2_MSGF_REPLY:
140 /*
141 * A reply from the remote is data we copy to stdout.
142 */
143 if (msg->aux_size) {
144 msg->aux_data[msg->aux_size - 1] = 0;
145 write(1, msg->aux_data, strlen(msg->aux_data));
146 }
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147 break;
148 default:
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149 fprintf(stderr, "Unknown message: %08x\n",
150 msg->any.head.cmd);
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151 assert((msg->any.head.cmd & HAMMER2_MSGF_REPLY) == 0);
152 hammer2_msg_reply(iocom, msg, HAMMER2_MSG_ERR_UNKNOWN);
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153 break;
154 }
78476205 155 hammer2_state_cleanuprx(iocom, msg);
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156 }
157 if (iocom->ioq_rx.error) {
158 fprintf(stderr, "node_master_recv: comm error %d\n",
159 iocom->ioq_rx.error);
160 }
161}
162
163/*
164 * Callback from hammer2_iocom_core() when messages might be transmittable
165 * to the socket.
166 */
167static
168void
bd878fc9 169shell_send(hammer2_iocom_t *iocom)
9ab15106 170{
7dc0f844 171 hammer2_iocom_flush1(iocom);
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172}
173
174static
175void
bd878fc9 176shell_tty(hammer2_iocom_t *iocom)
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177{
178 hammer2_msg_t *msg;
179 char buf[256];
180 size_t len;
181
182 if (fgets(buf, sizeof(buf), stdin) != NULL) {
183 len = strlen(buf);
184 if (len && buf[len - 1] == '\n')
185 buf[--len] = 0;
186 ++len;
78476205 187 msg = hammer2_msg_alloc(iocom, len, HAMMER2_DBG_SHELL);
9ab15106 188 bcopy(buf, msg->aux_data, len);
7dc0f844 189 hammer2_msg_write(iocom, msg, NULL, NULL, NULL);
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190 } else {
191 /*
192 * Set EOF flag without setting any error code for normal
193 * EOF.
194 */
195 iocom->flags |= HAMMER2_IOCOMF_EOF;
196 }
197}
198
199/*
200 * This is called from the master node to process a received debug
201 * shell command. We process the command, outputting the results,
202 * then finish up by outputting another prompt.
203 */
204void
8c280d5d 205hammer2_msg_dbg(hammer2_iocom_t *iocom, hammer2_msg_t *msg)
9ab15106 206{
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207 switch(msg->any.head.cmd & HAMMER2_MSGF_CMDSWMASK) {
208 case HAMMER2_DBG_SHELL:
209 /*
210 * This is a command which we must process.
211 * When we are finished we generate a final reply.
212 */
213 if (msg->aux_data)
214 msg->aux_data[msg->aux_size - 1] = 0;
215 hammer2_shell_parse(iocom, msg);
216 hammer2_msg_reply(iocom, msg, 0);
217 break;
218 case HAMMER2_DBG_SHELL | HAMMER2_MSGF_REPLY:
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219 /*
220 * A reply just prints out the string. No newline is added
221 * (it is expected to be embedded if desired).
222 */
223 if (msg->aux_data)
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224 msg->aux_data[msg->aux_size - 1] = 0;
225 if (msg->aux_data)
9ab15106 226 write(2, msg->aux_data, strlen(msg->aux_data));
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227 break;
228 default:
229 hammer2_msg_reply(iocom, msg, HAMMER2_MSG_ERR_UNKNOWN);
230 break;
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231 }
232}
233
234static void
78476205 235hammer2_shell_parse(hammer2_iocom_t *iocom, hammer2_msg_t *msg)
9ab15106 236{
78476205 237 char *cmdbuf = msg->aux_data;
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238 char *cmd = strsep(&cmdbuf, " \t");
239
240 if (cmd == NULL || *cmd == 0) {
241 ;
242 } else if (strcmp(cmd, "help") == 0 || strcmp(cmd, "?") == 0) {
78476205 243 iocom_printf(iocom, 0, "help Command help\n");
9ab15106 244 } else {
78476205 245 iocom_printf(iocom, 0, "Unrecognized command: %s\n", cmd);
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246 }
247}
248
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249/*
250 * Returns text debug output to the original defined by (msg). (msg) is
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251 * not modified and stays intact. We use a one-way message with REPLY set
252 * to distinguish between a debug command and debug terminal output.
253 *
254 * To prevent loops iocom_printf() can filter the message (cmd) related
255 * to the iocom_printf(). We filter out DBG messages.
4a2e0eae 256 */
9ab15106 257void
78476205 258iocom_printf(hammer2_iocom_t *iocom, uint32_t cmd, const char *ctl, ...)
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259{
260 hammer2_msg_t *rmsg;
261 va_list va;
262 char buf[1024];
263 size_t len;
264
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265 if ((cmd & HAMMER2_MSGF_PROTOS) == HAMMER2_MSG_PROTO_DBG)
266 return;
267
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268 va_start(va, ctl);
269 vsnprintf(buf, sizeof(buf), ctl, va);
270 va_end(va);
271 len = strlen(buf) + 1;
272
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273 rmsg = hammer2_msg_alloc(iocom, len, HAMMER2_DBG_SHELL |
274 HAMMER2_MSGF_REPLY);
9ab15106 275 bcopy(buf, rmsg->aux_data, len);
9ab15106 276
7dc0f844 277 hammer2_msg_write(iocom, rmsg, NULL, NULL, NULL);
9ab15106 278}
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279
280/************************************************************************
281 * SHOW *
282 ************************************************************************/
283
284static void show_bref(int fd, int tab, int bi, hammer2_blockref_t *bref);
285static void tabprintf(int tab, const char *ctl, ...);
286
287int
288cmd_show(const char *devpath)
289{
290 hammer2_blockref_t broot;
291 int fd;
292
293 fd = open(devpath, O_RDONLY);
294 if (fd < 0) {
295 perror("open");
296 return 1;
297 }
298 bzero(&broot, sizeof(broot));
299 broot.type = HAMMER2_BREF_TYPE_VOLUME;
300 broot.data_off = 0 | HAMMER2_PBUFRADIX;
301 show_bref(fd, 0, 0, &broot);
302 close(fd);
303
304 return 0;
305}
306
307static void
308show_bref(int fd, int tab, int bi, hammer2_blockref_t *bref)
309{
310 hammer2_media_data_t media;
311 hammer2_blockref_t *bscan;
312 int bcount;
313 int i;
314 int didnl;
ad7cf8ea 315 int namelen;
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316 int obrace = 1;
317 size_t bytes;
318 const char *type_str;
319 char *str = NULL;
320
321 switch(bref->type) {
322 case HAMMER2_BREF_TYPE_EMPTY:
323 type_str = "empty";
324 break;
325 case HAMMER2_BREF_TYPE_INODE:
326 type_str = "inode";
327 break;
328 case HAMMER2_BREF_TYPE_INDIRECT:
329 type_str = "indblk";
330 break;
331 case HAMMER2_BREF_TYPE_DATA:
332 type_str = "data";
333 break;
334 case HAMMER2_BREF_TYPE_VOLUME:
335 type_str = "volume";
336 break;
337 default:
338 type_str = "unknown";
339 break;
340 }
341
342
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343 tabprintf(tab, "%s.%-3d %016jx %016jx/%-2d mir=%016jx mod=%016jx ",
344 type_str, bi, (intmax_t)bref->data_off,
345 (intmax_t)bref->key, (intmax_t)bref->keybits,
346 (intmax_t)bref->mirror_tid, (intmax_t)bref->modify_tid);
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347 tab += SHOW_TAB;
348
349 bytes = (size_t)1 << (bref->data_off & HAMMER2_OFF_MASK_RADIX);
ad7cf8ea 350 if (bytes < HAMMER2_MINIOSIZE || bytes > sizeof(media)) {
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351 printf("(bad block size %zd)\n", bytes);
352 return;
353 }
354 if (bref->type != HAMMER2_BREF_TYPE_DATA || VerboseOpt >= 1) {
355 lseek(fd, bref->data_off & ~HAMMER2_OFF_MASK_RADIX, 0);
356 if (read(fd, &media, bytes) != (ssize_t)bytes) {
357 printf("(media read failed)\n");
358 return;
359 }
360 }
361
362 bscan = NULL;
363 bcount = 0;
364 didnl = 0;
365
366 switch(bref->type) {
367 case HAMMER2_BREF_TYPE_EMPTY:
368 obrace = 0;
369 break;
370 case HAMMER2_BREF_TYPE_INODE:
371 printf("{\n");
372 if (media.ipdata.op_flags & HAMMER2_OPFLAG_DIRECTDATA) {
373 /* no blockrefs */
374 } else {
375 bscan = &media.ipdata.u.blockset.blockref[0];
376 bcount = HAMMER2_SET_COUNT;
377 }
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378 namelen = media.ipdata.name_len;
379 if (namelen > HAMMER2_INODE_MAXNAME)
380 namelen = 0;
381 tabprintf(tab, "filename \"%*.*s\"\n",
382 namelen, namelen, media.ipdata.filename);
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383 tabprintf(tab, "version %d\n", media.ipdata.version);
384 tabprintf(tab, "uflags 0x%08x\n",
385 media.ipdata.uflags);
386 if (media.ipdata.rmajor || media.ipdata.rminor) {
387 tabprintf(tab, "rmajor %d\n",
388 media.ipdata.rmajor);
389 tabprintf(tab, "rminor %d\n",
390 media.ipdata.rminor);
391 }
392 tabprintf(tab, "ctime %s\n",
393 hammer2_time64_to_str(media.ipdata.ctime, &str));
394 tabprintf(tab, "mtime %s\n",
395 hammer2_time64_to_str(media.ipdata.mtime, &str));
396 tabprintf(tab, "atime %s\n",
397 hammer2_time64_to_str(media.ipdata.atime, &str));
398 tabprintf(tab, "btime %s\n",
399 hammer2_time64_to_str(media.ipdata.btime, &str));
400 tabprintf(tab, "uid %s\n",
401 hammer2_uuid_to_str(&media.ipdata.uid, &str));
402 tabprintf(tab, "gid %s\n",
403 hammer2_uuid_to_str(&media.ipdata.gid, &str));
404 tabprintf(tab, "type %s\n",
405 hammer2_iptype_to_str(media.ipdata.type));
406 tabprintf(tab, "opflgs 0x%02x\n",
407 media.ipdata.op_flags);
408 tabprintf(tab, "capflgs 0x%04x\n",
409 media.ipdata.cap_flags);
410 tabprintf(tab, "mode %-7o\n",
411 media.ipdata.mode);
412 tabprintf(tab, "inum 0x%016jx\n",
413 media.ipdata.inum);
414 tabprintf(tab, "size %ju\n",
415 (uintmax_t)media.ipdata.size);
416 tabprintf(tab, "nlinks %ju\n",
417 (uintmax_t)media.ipdata.nlinks);
418 tabprintf(tab, "iparent 0x%016jx\n",
419 (uintmax_t)media.ipdata.iparent);
420 tabprintf(tab, "name_key 0x%016jx\n",
421 (uintmax_t)media.ipdata.name_key);
422 tabprintf(tab, "name_len %u\n",
423 media.ipdata.name_len);
424 tabprintf(tab, "ncopies %u\n",
425 media.ipdata.ncopies);
426 tabprintf(tab, "compalg %u\n",
427 media.ipdata.comp_algo);
428 if (media.ipdata.op_flags & HAMMER2_OPFLAG_PFSROOT) {
429 tabprintf(tab, "pfs_type %u (%s)\n",
430 media.ipdata.pfs_type,
431 hammer2_pfstype_to_str(media.ipdata.pfs_type));
432 tabprintf(tab, "pfs_inum 0x%016jx\n",
433 (uintmax_t)media.ipdata.pfs_inum);
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434 tabprintf(tab, "pfs_clid %s\n",
435 hammer2_uuid_to_str(&media.ipdata.pfs_clid,
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436 &str));
437 tabprintf(tab, "pfs_fsid %s\n",
438 hammer2_uuid_to_str(&media.ipdata.pfs_fsid,
439 &str));
440 }
441 tabprintf(tab, "data_quota %ju\n",
442 (uintmax_t)media.ipdata.data_quota);
443 tabprintf(tab, "data_count %ju\n",
444 (uintmax_t)media.ipdata.data_count);
445 tabprintf(tab, "inode_quota %ju\n",
446 (uintmax_t)media.ipdata.inode_quota);
447 tabprintf(tab, "inode_count %ju\n",
448 (uintmax_t)media.ipdata.inode_count);
449 tabprintf(tab, "attr_tid 0x%016jx\n",
450 (uintmax_t)media.ipdata.attr_tid);
451 if (media.ipdata.type == HAMMER2_OBJTYPE_DIRECTORY) {
452 tabprintf(tab, "dirent_tid %016jx\n",
453 (uintmax_t)media.ipdata.dirent_tid);
454 }
455 break;
456 case HAMMER2_BREF_TYPE_INDIRECT:
457 bscan = &media.npdata.blockref[0];
458 bcount = bytes / sizeof(hammer2_blockref_t);
459 didnl = 1;
460 printf("{\n");
461 break;
462 case HAMMER2_BREF_TYPE_DATA:
463 if (VerboseOpt >= 2) {
464 printf("{\n");
465 } else {
466 printf("\n");
467 obrace = 0;
468 }
469 break;
470 case HAMMER2_BREF_TYPE_VOLUME:
471 bscan = &media.voldata.sroot_blockset.blockref[0];
472 bcount = HAMMER2_SET_COUNT;
473 printf("{\n");
474 break;
475 default:
476 break;
477 }
478 if (str)
479 free(str);
480 for (i = 0; i < bcount; ++i) {
481 if (bscan[i].type != HAMMER2_BREF_TYPE_EMPTY) {
482 if (didnl == 0) {
483 printf("\n");
484 didnl = 1;
485 }
486 show_bref(fd, tab, i, &bscan[i]);
487 }
488 }
489 tab -= SHOW_TAB;
490 if (obrace) {
491 if (bref->type == HAMMER2_BREF_TYPE_INODE)
492 tabprintf(tab, "} (%s.%d, \"%s\")\n",
493 type_str, bi, media.ipdata.filename);
494 else
495 tabprintf(tab, "} (%s.%d)\n", type_str,bi);
496 }
497}
498
499static
500void
501tabprintf(int tab, const char *ctl, ...)
502{
503 va_list va;
504
505 printf("%*.*s", tab, tab, "");
506 va_start(va, ctl);
507 vprintf(ctl, va);
508 va_end(va);
509}