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_rcvmsg(dmsg_msg_t *msg);
  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         struct dmsg_iocom iocom;
  51         dmsg_msg_t *msg;
  52         int fd;
  53
  54         /*
  55          * Connect to the target
  56          */
  57         fd = dmsg_connect(hostname);
  58         if (fd < 0)
  59                 return 1;
  60
  61         /*
  62          * Run the session.  The remote end transmits our prompt.
  63          */
  64         dmsg_iocom_init(&iocom, fd, 0,
  65                         NULL,
  66                         shell_rcvmsg,
  67                         hammer2_shell_parse,
  68                         shell_ttymsg);
  69         fcntl(0, F_SETFL, O_NONBLOCK);
  70         printf("debug: connected\n");
  71
  72         msg = dmsg_msg_alloc(iocom.router, 0, DMSG_DBG_SHELL, NULL, NULL);
  73         dmsg_msg_write(msg);
  74         dmsg_iocom_core(&iocom);
  75         fprintf(stderr, "debug: disconnected\n");
  76         close(fd);
  77         return 0;
  78 }
  79
  80 /*
  81  * Callback from dmsg_iocom_core() when messages might be present
  82  * on the socket.
  83  */
  84 static
  85 void
  86 shell_rcvmsg(dmsg_msg_t *msg)
  87 {
  88         switch(msg->any.head.cmd & DMSGF_TRANSMASK) {
  89         case DMSG_LNK_ERROR:
  90         case DMSG_LNK_ERROR | DMSGF_REPLY:
  91                 /*
  92                  * One-way non-transactional LNK_ERROR messages typically
  93                  * indicate a connection failure.  Error code 0 is used by
  94                  * the debug shell to indicate no more results from last cmd.
  95                  */
  96                 if (msg->any.head.error) {
  97                         fprintf(stderr, "Stream failure: %s\n",
  98                                 dmsg_msg_str(msg));
  99                 } else {
 100                         write(1, "debug> ", 7);
 101                 }
 102                 break;
 103         case DMSG_LNK_ERROR | DMSGF_DELETE:
 104                 /* ignore termination of LNK_CONN */
 105                 break;
 106         case DMSG_DBG_SHELL:
 107                 /*
 108                  * We send the commands, not accept them.
 109                  * (one-way message, not transactional)
 110                  */
 111                 dmsg_msg_reply(msg, DMSG_ERR_NOSUPP);
 112                 break;
 113         case DMSG_DBG_SHELL | DMSGF_REPLY:
 114                 /*
 115                  * A reply from the remote is data we copy to stdout.
 116                  * (one-way message, not transactional)
 117                  */
 118                 if (msg->aux_size) {
 119                         msg->aux_data[msg->aux_size - 1] = 0;
 120                         write(1, msg->aux_data, strlen(msg->aux_data));
 121                 }
 122                 break;
 123         case DMSG_LNK_CONN | DMSGF_CREATE:
 124                 fprintf(stderr, "Debug Shell is ignoring received LNK_CONN\n");
 125                 dmsg_msg_reply(msg, DMSG_ERR_NOSUPP);
 126                 break;
 127         case DMSG_LNK_CONN | DMSGF_DELETE:
 128                 break;
 129         default:
 130                 /*
 131                  * Ignore any unknown messages, Terminate any unknown
 132                  * transactions with an error.
 133                  */
 134                 fprintf(stderr, "Unknown message: %s\n", dmsg_msg_str(msg));
 135                 if (msg->any.head.cmd & DMSGF_CREATE)
 136                         dmsg_msg_reply(msg, DMSG_ERR_NOSUPP);
 137                 if (msg->any.head.cmd & DMSGF_DELETE)
 138                         dmsg_msg_reply(msg, DMSG_ERR_NOSUPP);
 139                 break;
 140         }
 141 }
 142
 143 static
 144 void
 145 shell_ttymsg(dmsg_iocom_t *iocom)
 146 {
 147         dmsg_msg_t *msg;
 148         char buf[256];
 149         size_t len;
 150
 151         if (fgets(buf, sizeof(buf), stdin) != NULL) {
 152                 len = strlen(buf);
 153                 if (len && buf[len - 1] == '\n')
 154                         buf[--len] = 0;
 155                 ++len;
 156                 msg = dmsg_msg_alloc(iocom->router, len, DMSG_DBG_SHELL,
 157                                      NULL, NULL);
 158                 bcopy(buf, msg->aux_data, len);
 159                 dmsg_msg_write(msg);
 160         } else if (feof(stdin)) {
 161                 /*
 162                  * Set EOF flag without setting any error code for normal
 163                  * EOF.
 164                  */
 165                 iocom->flags |= DMSG_IOCOMF_EOF;
 166         } else {
 167                 clearerr(stdin);
 168         }
 169 }
 170
 171 static void shell_span(dmsg_router_t *router, char *cmdbuf);
 172
 173 void
 174 hammer2_shell_parse(dmsg_msg_t *msg)
 175 {
 176         dmsg_router_t *router = msg->router;
 177         char *cmdbuf = msg->aux_data;
 178         char *cmd = strsep(&cmdbuf, " \t");
 179
 180         if (cmd == NULL || *cmd == 0) {
 181                 ;
 182         } else if (strcmp(cmd, "span") == 0) {
 183                 shell_span(router, cmdbuf);
 184         } else if (strcmp(cmd, "tree") == 0) {
 185                 dmsg_shell_tree(router, cmdbuf); /* dump spanning tree */
 186         } else if (strcmp(cmd, "help") == 0 || strcmp(cmd, "?") == 0) {
 187                 dmsg_router_printf(router, "help            Command help\n");
 188                 dmsg_router_printf(router, "span <host>     Span to target host\n");
 189                 dmsg_router_printf(router, "tree            Dump spanning tree\n");
 190         } else {
 191                 dmsg_router_printf(router, "Unrecognized command: %s\n", cmd);
 192         }
 193 }
 194
 195 static void
 196 shell_span(dmsg_router_t *router, char *cmdbuf)
 197 {
 198         const char *hostname = strsep(&cmdbuf, " \t");
 199         pthread_t thread;
 200         int fd;
 201
 202         /*
 203          * Connect to the target
 204          */
 205         if (hostname == NULL) {
 206                 fd = -1;
 207         } else {
 208                 fd = dmsg_connect(hostname);
 209         }
 210
 211         /*
 212          * Start master service
 213          */
 214         if (fd < 0) {
 215                 dmsg_router_printf(router, "Connection to %s failed\n", hostname);
 216         } else {
 217                 dmsg_router_printf(router, "Connected to %s\n", hostname);
 218                 pthread_create(&thread, NULL,
 219                                dmsg_master_service, (void *)(intptr_t)fd);
 220                 /*pthread_join(thread, &res);*/
 221         }
 222 }
 223
 224 /************************************************************************
 225  *                              DEBUGSPAN                               *
 226  ************************************************************************
 227  *
 228  * Connect to the target manually (not via the cluster list embedded in
 229  * a hammer2 filesystem) and initiate the SPAN protocol.
 230  */
 231 int
 232 cmd_debugspan(const char *hostname)
 233 {
 234         pthread_t thread;
 235         int fd;
 236         void *res;
 237
 238         /*
 239          * Connect to the target
 240          */
 241         fd = dmsg_connect(hostname);
 242         if (fd < 0)
 243                 return 1;
 244
 245         printf("debugspan: connected to %s, starting CONN/SPAN\n", hostname);
 246         pthread_create(&thread, NULL,
 247                        dmsg_master_service, (void *)(intptr_t)fd);
 248         pthread_join(thread, &res);
 249         return(0);
 250 }
 251
 252 /************************************************************************
 253  *                                  SHOW                                *
 254  ************************************************************************/
 255
 256 static void show_bref(int fd, int tab, int bi, hammer2_blockref_t *bref);
 257 static void tabprintf(int tab, const char *ctl, ...);
 258
 259 int
 260 cmd_show(const char *devpath)
 261 {
 262         hammer2_blockref_t broot;
 263         int fd;
 264
 265         fd = open(devpath, O_RDONLY);
 266         if (fd < 0) {
 267                 perror("open");
 268                 return 1;
 269         }
 270         bzero(&broot, sizeof(broot));
 271         broot.type = HAMMER2_BREF_TYPE_VOLUME;
 272         broot.data_off = 0 | HAMMER2_PBUFRADIX;
 273         show_bref(fd, 0, 0, &broot);
 274         close(fd);
 275
 276         return 0;
 277 }
 278
 279 static void
 280 show_bref(int fd, int tab, int bi, hammer2_blockref_t *bref)
 281 {
 282         hammer2_media_data_t media;
 283         hammer2_blockref_t *bscan;
 284         int bcount;
 285         int i;
 286         int didnl;
 287         int namelen;
 288         int obrace = 1;
 289         size_t bytes;
 290         const char *type_str;
 291         char *str = NULL;
 292
 293         switch(bref->type) {
 294         case HAMMER2_BREF_TYPE_EMPTY:
 295                 type_str = "empty";
 296                 break;
 297         case HAMMER2_BREF_TYPE_INODE:
 298                 type_str = "inode";
 299                 break;
 300         case HAMMER2_BREF_TYPE_INDIRECT:
 301                 type_str = "indblk";
 302                 break;
 303         case HAMMER2_BREF_TYPE_DATA:
 304                 type_str = "data";
 305                 break;
 306         case HAMMER2_BREF_TYPE_VOLUME:
 307                 type_str = "volume";
 308                 break;
 309         default:
 310                 type_str = "unknown";
 311                 break;
 312         }
 313
 314
 315         tabprintf(tab, "%s.%-3d %016jx %016jx/%-2d mir=%016jx mod=%016jx ",
 316                type_str, bi, (intmax_t)bref->data_off,
 317                (intmax_t)bref->key, (intmax_t)bref->keybits,
 318                (intmax_t)bref->mirror_tid, (intmax_t)bref->modify_tid);
 319         tab += SHOW_TAB;
 320
 321         bytes = (size_t)1 << (bref->data_off & HAMMER2_OFF_MASK_RADIX);
 322         if (bytes < HAMMER2_MINIOSIZE || bytes > sizeof(media)) {
 323                 printf("(bad block size %zd)\n", bytes);
 324                 return;
 325         }
 326         if (bref->type != HAMMER2_BREF_TYPE_DATA || VerboseOpt >= 1) {
 327                 lseek(fd, bref->data_off & ~HAMMER2_OFF_MASK_RADIX, 0);
 328                 if (read(fd, &media, bytes) != (ssize_t)bytes) {
 329                         printf("(media read failed)\n");
 330                         return;
 331                 }
 332         }
 333
 334         bscan = NULL;
 335         bcount = 0;
 336         didnl = 0;
 337
 338         switch(bref->type) {
 339         case HAMMER2_BREF_TYPE_EMPTY:
 340                 obrace = 0;
 341                 break;
 342         case HAMMER2_BREF_TYPE_INODE:
 343                 printf("{\n");
 344                 if (media.ipdata.op_flags & HAMMER2_OPFLAG_DIRECTDATA) {
 345                         /* no blockrefs */
 346                 } else {
 347                         bscan = &media.ipdata.u.blockset.blockref[0];
 348                         bcount = HAMMER2_SET_COUNT;
 349                 }
 350                 namelen = media.ipdata.name_len;
 351                 if (namelen > HAMMER2_INODE_MAXNAME)
 352                         namelen = 0;
 353                 tabprintf(tab, "filename \"%*.*s\"\n",
 354                           namelen, namelen, media.ipdata.filename);
 355                 tabprintf(tab, "version  %d\n", media.ipdata.version);
 356                 tabprintf(tab, "uflags   0x%08x\n",
 357                           media.ipdata.uflags);
 358                 if (media.ipdata.rmajor || media.ipdata.rminor) {
 359                         tabprintf(tab, "rmajor   %d\n",
 360                                   media.ipdata.rmajor);
 361                         tabprintf(tab, "rminor   %d\n",
 362                                   media.ipdata.rminor);
 363                 }
 364                 tabprintf(tab, "ctime    %s\n",
 365                           hammer2_time64_to_str(media.ipdata.ctime, &str));
 366                 tabprintf(tab, "mtime    %s\n",
 367                           hammer2_time64_to_str(media.ipdata.mtime, &str));
 368                 tabprintf(tab, "atime    %s\n",
 369                           hammer2_time64_to_str(media.ipdata.atime, &str));
 370                 tabprintf(tab, "btime    %s\n",
 371                           hammer2_time64_to_str(media.ipdata.btime, &str));
 372                 tabprintf(tab, "uid      %s\n",
 373                           hammer2_uuid_to_str(&media.ipdata.uid, &str));
 374                 tabprintf(tab, "gid      %s\n",
 375                           hammer2_uuid_to_str(&media.ipdata.gid, &str));
 376                 tabprintf(tab, "type     %s\n",
 377                           hammer2_iptype_to_str(media.ipdata.type));
 378                 tabprintf(tab, "opflgs   0x%02x\n",
 379                           media.ipdata.op_flags);
 380                 tabprintf(tab, "capflgs  0x%04x\n",
 381                           media.ipdata.cap_flags);
 382                 tabprintf(tab, "mode     %-7o\n",
 383                           media.ipdata.mode);
 384                 tabprintf(tab, "inum     0x%016jx\n",
 385                           media.ipdata.inum);
 386                 tabprintf(tab, "size     %ju\n",
 387                           (uintmax_t)media.ipdata.size);
 388                 tabprintf(tab, "nlinks   %ju\n",
 389                           (uintmax_t)media.ipdata.nlinks);
 390                 tabprintf(tab, "iparent  0x%016jx\n",
 391                           (uintmax_t)media.ipdata.iparent);
 392                 tabprintf(tab, "name_key 0x%016jx\n",
 393                           (uintmax_t)media.ipdata.name_key);
 394                 tabprintf(tab, "name_len %u\n",
 395                           media.ipdata.name_len);
 396                 tabprintf(tab, "ncopies  %u\n",
 397                           media.ipdata.ncopies);
 398                 tabprintf(tab, "compalg  %u\n",
 399                           media.ipdata.comp_algo);
 400                 if (media.ipdata.op_flags & HAMMER2_OPFLAG_PFSROOT) {
 401                         tabprintf(tab, "pfs_type %u (%s)\n",
 402                                   media.ipdata.pfs_type,
 403                                   hammer2_pfstype_to_str(media.ipdata.pfs_type));
 404                         tabprintf(tab, "pfs_inum 0x%016jx\n",
 405                                   (uintmax_t)media.ipdata.pfs_inum);
 406                         tabprintf(tab, "pfs_clid %s\n",
 407                                   hammer2_uuid_to_str(&media.ipdata.pfs_clid,
 408                                                       &str));
 409                         tabprintf(tab, "pfs_fsid %s\n",
 410                                   hammer2_uuid_to_str(&media.ipdata.pfs_fsid,
 411                                                       &str));
 412                 }
 413                 tabprintf(tab, "data_quota  %ju\n",
 414                           (uintmax_t)media.ipdata.data_quota);
 415                 tabprintf(tab, "data_count  %ju\n",
 416                           (uintmax_t)media.ipdata.data_count);
 417                 tabprintf(tab, "inode_quota %ju\n",
 418                           (uintmax_t)media.ipdata.inode_quota);
 419                 tabprintf(tab, "inode_count %ju\n",
 420                           (uintmax_t)media.ipdata.inode_count);
 421                 tabprintf(tab, "attr_tid    0x%016jx\n",
 422                           (uintmax_t)media.ipdata.attr_tid);
 423                 if (media.ipdata.type == HAMMER2_OBJTYPE_DIRECTORY) {
 424                         tabprintf(tab, "dirent_tid  %016jx\n",
 425                                   (uintmax_t)media.ipdata.dirent_tid);
 426                 }
 427                 break;
 428         case HAMMER2_BREF_TYPE_INDIRECT:
 429                 bscan = &media.npdata.blockref[0];
 430                 bcount = bytes / sizeof(hammer2_blockref_t);
 431                 didnl = 1;
 432                 printf("{\n");
 433                 break;
 434         case HAMMER2_BREF_TYPE_DATA:
 435                 if (VerboseOpt >= 2) {
 436                         printf("{\n");
 437                 } else {
 438                         printf("\n");
 439                         obrace = 0;
 440                 }
 441                 break;
 442         case HAMMER2_BREF_TYPE_VOLUME:
 443                 bscan = &media.voldata.sroot_blockset.blockref[0];
 444                 bcount = HAMMER2_SET_COUNT;
 445                 printf("{\n");
 446                 break;
 447         default:
 448                 break;
 449         }
 450         if (str)
 451                 free(str);
 452         for (i = 0; i < bcount; ++i) {
 453                 if (bscan[i].type != HAMMER2_BREF_TYPE_EMPTY) {
 454                         if (didnl == 0) {
 455                                 printf("\n");
 456                                 didnl = 1;
 457                         }
 458                         show_bref(fd, tab, i, &bscan[i]);
 459                 }
 460         }
 461         tab -= SHOW_TAB;
 462         if (obrace) {
 463                 if (bref->type == HAMMER2_BREF_TYPE_INODE)
 464                         tabprintf(tab, "} (%s.%d, \"%s\")\n",
 465                                   type_str, bi, media.ipdata.filename);
 466                 else
 467                         tabprintf(tab, "} (%s.%d)\n", type_str,bi);
 468         }
 469 }
 470
 471 static
 472 void
 473 tabprintf(int tab, const char *ctl, ...)
 474 {
 475         va_list va;
 476
 477         printf("%*.*s", tab, tab, "");
 478         va_start(va, ctl);
 479         vprintf(ctl, va);
 480         va_end(va);
 481 }