sbin/hammer2/cmd_debug.c

   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_recv(hammer2_iocom_t *iocom);
  41 static void shell_send(hammer2_iocom_t *iocom);
  42 static void shell_tty(hammer2_iocom_t *iocom);
  43 static void hammer2_shell_parse(hammer2_iocom_t *iocom, hammer2_msg_t *msg);
  44
  45 /************************************************************************
  46  *                                  SHELL                               *
  47  ************************************************************************/
  48
  49 int
  50 cmd_shell(const char *hostname)
  51 {
  52         struct sockaddr_in lsin;
  53         struct hammer2_iocom iocom;
  54         hammer2_msg_t *msg;
  55         struct hostent *hen;
  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);
  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         }
  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
 100         msg = hammer2_msg_alloc(&iocom, 0, HAMMER2_DBG_SHELL);
 101         hammer2_ioq_write(&iocom, msg);
 102
 103         hammer2_iocom_core(&iocom, shell_recv, shell_send, shell_tty);
 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  */
 113 static
 114 void
 115 shell_recv(hammer2_iocom_t *iocom)
 116 {
 117         hammer2_msg_t *msg;
 118
 119         while ((iocom->flags & HAMMER2_IOCOMF_EOF) == 0 &&
 120                (msg = hammer2_ioq_read(iocom)) != NULL) {
 121
 122                 switch(msg->any.head.cmd & HAMMER2_MSGF_CMDSWMASK) {
 123                 case HAMMER2_LNK_ERROR:
 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                         }
 132                         break;
 133                 case HAMMER2_DBG_SHELL:
 134                         /*
 135                          * We send the commands, not accept them.
 136                          */
 137                         hammer2_msg_reply(iocom, msg, HAMMER2_MSG_ERR_UNKNOWN);
 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                         }
 147                         break;
 148                 default:
 149                         fprintf(stderr, "Unknown message: %08x\n",
 150                                 msg->any.head.cmd);
 151                         assert((msg->any.head.cmd & HAMMER2_MSGF_REPLY) == 0);
 152                         hammer2_msg_reply(iocom, msg, HAMMER2_MSG_ERR_UNKNOWN);
 153                         break;
 154                 }
 155                 hammer2_state_cleanuprx(iocom, msg);
 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  */
 167 static
 168 void
 169 shell_send(hammer2_iocom_t *iocom)
 170 {
 171         hammer2_iocom_flush(iocom);
 172 }
 173
 174 static
 175 void
 176 shell_tty(hammer2_iocom_t *iocom)
 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;
 187                 msg = hammer2_msg_alloc(iocom, len, HAMMER2_DBG_SHELL);
 188                 bcopy(buf, msg->aux_data, len);
 189                 hammer2_ioq_write(iocom, msg);
 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  */
 204 void
 205 hammer2_shell_remote(hammer2_iocom_t *iocom, hammer2_msg_t *msg)
 206 {
 207         if (msg->aux_data)
 208                 msg->aux_data[msg->aux_size - 1] = 0;
 209         if (msg->any.head.cmd & HAMMER2_MSGF_REPLY) {
 210                 /*
 211                  * A reply just prints out the string.  No newline is added
 212                  * (it is expected to be embedded if desired).
 213                  */
 214                 if (msg->aux_data)
 215                         write(2, msg->aux_data, strlen(msg->aux_data));
 216         } else {
 217                 /*
 218                  * Otherwise this is a command which we must process.
 219                  * When we are finished we generate a final reply.
 220                  */
 221                 hammer2_shell_parse(iocom, msg);
 222                 hammer2_msg_reply(iocom, msg, 0);
 223         }
 224 }
 225
 226 static void
 227 hammer2_shell_parse(hammer2_iocom_t *iocom, hammer2_msg_t *msg)
 228 {
 229         char *cmdbuf = msg->aux_data;
 230         char *cmd = strsep(&cmdbuf, " \t");
 231
 232         if (cmd == NULL || *cmd == 0) {
 233                 ;
 234         } else if (strcmp(cmd, "help") == 0 || strcmp(cmd, "?") == 0) {
 235                 iocom_printf(iocom, 0, "help        Command help\n");
 236         } else {
 237                 iocom_printf(iocom, 0, "Unrecognized command: %s\n", cmd);
 238         }
 239 }
 240
 241 /*
 242  * Returns text debug output to the original defined by (msg).  (msg) is
 243  * not modified and stays intact.  We use a one-way message with REPLY set
 244  * to distinguish between a debug command and debug terminal output.
 245  *
 246  * To prevent loops iocom_printf() can filter the message (cmd) related
 247  * to the iocom_printf().  We filter out DBG messages.
 248  */
 249 void
 250 iocom_printf(hammer2_iocom_t *iocom, uint32_t cmd, const char *ctl, ...)
 251 {
 252         hammer2_msg_t *rmsg;
 253         va_list va;
 254         char buf[1024];
 255         size_t len;
 256
 257         if ((cmd & HAMMER2_MSGF_PROTOS) == HAMMER2_MSG_PROTO_DBG)
 258                 return;
 259
 260         va_start(va, ctl);
 261         vsnprintf(buf, sizeof(buf), ctl, va);
 262         va_end(va);
 263         len = strlen(buf) + 1;
 264
 265         rmsg = hammer2_msg_alloc(iocom, len, HAMMER2_DBG_SHELL |
 266                                              HAMMER2_MSGF_REPLY);
 267         bcopy(buf, rmsg->aux_data, len);
 268
 269         hammer2_ioq_write(iocom, rmsg);
 270 }
 271
 272 /************************************************************************
 273  *                                  SHOW                                *
 274  ************************************************************************/
 275
 276 static void show_bref(int fd, int tab, int bi, hammer2_blockref_t *bref);
 277 static void tabprintf(int tab, const char *ctl, ...);
 278
 279 int
 280 cmd_show(const char *devpath)
 281 {
 282         hammer2_blockref_t broot;
 283         int fd;
 284
 285         fd = open(devpath, O_RDONLY);
 286         if (fd < 0) {
 287                 perror("open");
 288                 return 1;
 289         }
 290         bzero(&broot, sizeof(broot));
 291         broot.type = HAMMER2_BREF_TYPE_VOLUME;
 292         broot.data_off = 0 | HAMMER2_PBUFRADIX;
 293         show_bref(fd, 0, 0, &broot);
 294         close(fd);
 295
 296         return 0;
 297 }
 298
 299 static void
 300 show_bref(int fd, int tab, int bi, hammer2_blockref_t *bref)
 301 {
 302         hammer2_media_data_t media;
 303         hammer2_blockref_t *bscan;
 304         int bcount;
 305         int i;
 306         int didnl;
 307         int namelen;
 308         int obrace = 1;
 309         size_t bytes;
 310         const char *type_str;
 311         char *str = NULL;
 312
 313         switch(bref->type) {
 314         case HAMMER2_BREF_TYPE_EMPTY:
 315                 type_str = "empty";
 316                 break;
 317         case HAMMER2_BREF_TYPE_INODE:
 318                 type_str = "inode";
 319                 break;
 320         case HAMMER2_BREF_TYPE_INDIRECT:
 321                 type_str = "indblk";
 322                 break;
 323         case HAMMER2_BREF_TYPE_DATA:
 324                 type_str = "data";
 325                 break;
 326         case HAMMER2_BREF_TYPE_VOLUME:
 327                 type_str = "volume";
 328                 break;
 329         default:
 330                 type_str = "unknown";
 331                 break;
 332         }
 333
 334
 335         tabprintf(tab, "%s.%-3d %016jx %016jx/%-2d mir=%016jx mod=%016jx ",
 336                type_str, bi, (intmax_t)bref->data_off,
 337                (intmax_t)bref->key, (intmax_t)bref->keybits,
 338                (intmax_t)bref->mirror_tid, (intmax_t)bref->modify_tid);
 339         tab += SHOW_TAB;
 340
 341         bytes = (size_t)1 << (bref->data_off & HAMMER2_OFF_MASK_RADIX);
 342         if (bytes < HAMMER2_MINIOSIZE || bytes > sizeof(media)) {
 343                 printf("(bad block size %zd)\n", bytes);
 344                 sleep(1);
 345                 return;
 346         }
 347         if (bref->type != HAMMER2_BREF_TYPE_DATA || VerboseOpt >= 1) {
 348                 lseek(fd, bref->data_off & ~HAMMER2_OFF_MASK_RADIX, 0);
 349                 if (read(fd, &media, bytes) != (ssize_t)bytes) {
 350                         printf("(media read failed)\n");
 351                         sleep(1);
 352                         return;
 353                 }
 354         }
 355
 356         bscan = NULL;
 357         bcount = 0;
 358         didnl = 0;
 359
 360         switch(bref->type) {
 361         case HAMMER2_BREF_TYPE_EMPTY:
 362                 obrace = 0;
 363                 break;
 364         case HAMMER2_BREF_TYPE_INODE:
 365                 printf("{\n");
 366                 if (media.ipdata.op_flags & HAMMER2_OPFLAG_DIRECTDATA) {
 367                         /* no blockrefs */
 368                 } else {
 369                         bscan = &media.ipdata.u.blockset.blockref[0];
 370                         bcount = HAMMER2_SET_COUNT;
 371                 }
 372                 namelen = media.ipdata.name_len;
 373                 if (namelen > HAMMER2_INODE_MAXNAME)
 374                         namelen = 0;
 375                 tabprintf(tab, "filename \"%*.*s\"\n",
 376                           namelen, namelen, media.ipdata.filename);
 377                 tabprintf(tab, "version  %d\n", media.ipdata.version);
 378                 tabprintf(tab, "uflags   0x%08x\n",
 379                           media.ipdata.uflags);
 380                 if (media.ipdata.rmajor || media.ipdata.rminor) {
 381                         tabprintf(tab, "rmajor   %d\n",
 382                                   media.ipdata.rmajor);
 383                         tabprintf(tab, "rminor   %d\n",
 384                                   media.ipdata.rminor);
 385                 }
 386                 tabprintf(tab, "ctime    %s\n",
 387                           hammer2_time64_to_str(media.ipdata.ctime, &str));
 388                 tabprintf(tab, "mtime    %s\n",
 389                           hammer2_time64_to_str(media.ipdata.mtime, &str));
 390                 tabprintf(tab, "atime    %s\n",
 391                           hammer2_time64_to_str(media.ipdata.atime, &str));
 392                 tabprintf(tab, "btime    %s\n",
 393                           hammer2_time64_to_str(media.ipdata.btime, &str));
 394                 tabprintf(tab, "uid      %s\n",
 395                           hammer2_uuid_to_str(&media.ipdata.uid, &str));
 396                 tabprintf(tab, "gid      %s\n",
 397                           hammer2_uuid_to_str(&media.ipdata.gid, &str));
 398                 tabprintf(tab, "type     %s\n",
 399                           hammer2_iptype_to_str(media.ipdata.type));
 400                 tabprintf(tab, "opflgs   0x%02x\n",
 401                           media.ipdata.op_flags);
 402                 tabprintf(tab, "capflgs  0x%04x\n",
 403                           media.ipdata.cap_flags);
 404                 tabprintf(tab, "mode     %-7o\n",
 405                           media.ipdata.mode);
 406                 tabprintf(tab, "inum     0x%016jx\n",
 407                           media.ipdata.inum);
 408                 tabprintf(tab, "size     %ju\n",
 409                           (uintmax_t)media.ipdata.size);
 410                 tabprintf(tab, "nlinks   %ju\n",
 411                           (uintmax_t)media.ipdata.nlinks);
 412                 tabprintf(tab, "iparent  0x%016jx\n",
 413                           (uintmax_t)media.ipdata.iparent);
 414                 tabprintf(tab, "name_key 0x%016jx\n",
 415                           (uintmax_t)media.ipdata.name_key);
 416                 tabprintf(tab, "name_len %u\n",
 417                           media.ipdata.name_len);
 418                 tabprintf(tab, "ncopies  %u\n",
 419                           media.ipdata.ncopies);
 420                 tabprintf(tab, "compalg  %u\n",
 421                           media.ipdata.comp_algo);
 422                 if (media.ipdata.op_flags & HAMMER2_OPFLAG_PFSROOT) {
 423                         tabprintf(tab, "pfs_type %u (%s)\n",
 424                                   media.ipdata.pfs_type,
 425                                   hammer2_pfstype_to_str(media.ipdata.pfs_type));
 426                         tabprintf(tab, "pfs_inum 0x%016jx\n",
 427                                   (uintmax_t)media.ipdata.pfs_inum);
 428                         tabprintf(tab, "pfs_id   %s\n",
 429                                   hammer2_uuid_to_str(&media.ipdata.pfs_id,
 430                                                       &str));
 431                         tabprintf(tab, "pfs_fsid %s\n",
 432                                   hammer2_uuid_to_str(&media.ipdata.pfs_fsid,
 433                                                       &str));
 434                 }
 435                 tabprintf(tab, "data_quota  %ju\n",
 436                           (uintmax_t)media.ipdata.data_quota);
 437                 tabprintf(tab, "data_count  %ju\n",
 438                           (uintmax_t)media.ipdata.data_count);
 439                 tabprintf(tab, "inode_quota %ju\n",
 440                           (uintmax_t)media.ipdata.inode_quota);
 441                 tabprintf(tab, "inode_count %ju\n",
 442                           (uintmax_t)media.ipdata.inode_count);
 443                 tabprintf(tab, "attr_tid    0x%016jx\n",
 444                           (uintmax_t)media.ipdata.attr_tid);
 445                 if (media.ipdata.type == HAMMER2_OBJTYPE_DIRECTORY) {
 446                         tabprintf(tab, "dirent_tid  %016jx\n",
 447                                   (uintmax_t)media.ipdata.dirent_tid);
 448                 }
 449                 break;
 450         case HAMMER2_BREF_TYPE_INDIRECT:
 451                 bscan = &media.npdata.blockref[0];
 452                 bcount = bytes / sizeof(hammer2_blockref_t);
 453                 didnl = 1;
 454                 printf("{\n");
 455                 break;
 456         case HAMMER2_BREF_TYPE_DATA:
 457                 if (VerboseOpt >= 2) {
 458                         printf("{\n");
 459                 } else {
 460                         printf("\n");
 461                         obrace = 0;
 462                 }
 463                 break;
 464         case HAMMER2_BREF_TYPE_VOLUME:
 465                 bscan = &media.voldata.sroot_blockset.blockref[0];
 466                 bcount = HAMMER2_SET_COUNT;
 467                 printf("{\n");
 468                 break;
 469         default:
 470                 break;
 471         }
 472         if (str)
 473                 free(str);
 474         for (i = 0; i < bcount; ++i) {
 475                 if (bscan[i].type != HAMMER2_BREF_TYPE_EMPTY) {
 476                         if (didnl == 0) {
 477                                 printf("\n");
 478                                 didnl = 1;
 479                         }
 480                         show_bref(fd, tab, i, &bscan[i]);
 481                 }
 482         }
 483         tab -= SHOW_TAB;
 484         if (obrace) {
 485                 if (bref->type == HAMMER2_BREF_TYPE_INODE)
 486                         tabprintf(tab, "} (%s.%d, \"%s\")\n",
 487                                   type_str, bi, media.ipdata.filename);
 488                 else
 489                         tabprintf(tab, "} (%s.%d)\n", type_str,bi);
 490         }
 491 }
 492
 493 static
 494 void
 495 tabprintf(int tab, const char *ctl, ...)
 496 {
 497         va_list va;
 498
 499         printf("%*.*s", tab, tab, "");
 500         va_start(va, ctl);
 501         vprintf(ctl, va);
 502         va_end(va);
 503 }