lnet/utils/debug.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * GPL HEADER START
   5  *
   6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 only,
  10  * as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License version 2 for more details (a copy is included
  16  * in the LICENSE file that accompanied this code).
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * version 2 along with this program; If not, see
  20  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  21  *
  22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  23  * CA 95054 USA or visit www.sun.com if you need additional information or
  24  * have any questions.
  25  *
  26  * GPL HEADER END
  27  */
  28 /*
  29  * Copyright  2008 Sun Microsystems, Inc. All rights reserved
  30  * Use is subject to license terms.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  *
  36  * lnet/utils/debug.c
  37  * Some day I'll split all of this functionality into a cfs_debug module
  38  * of its own. That day is not today.
  39  */
  40
  41 #define __USE_FILE_OFFSET64
  42 #ifndef _GNU_SOURCE
  43 #define  _GNU_SOURCE
  44 #endif
  45
  46 #include <libcfs/libcfsutil.h>
  47 #include <lnet/lnetctl.h>
  48
  49 #include <sys/utsname.h>
  50
  51 static char rawbuf[8192];
  52 static char *buf = rawbuf;
  53 static int max = 8192;
  54 /*static int g_pfd = -1;*/
  55 static int subsystem_mask = ~0;
  56 static int debug_mask = ~0;
  57
  58 #define MAX_MARK_SIZE 256
  59
  60 static const char *libcfs_debug_subsystems[] =
  61         {"undefined", "mdc", "mds", "osc",
  62          "ost", "class", "log", "llite",
  63          "rpc", "mgmt", "lnet", "lnd",
  64          "pinger", "filter", "", "echo",
  65          "ldlm", "lov", "", "",
  66          "", "", "", "lmv",
  67          "", "sec", "gss", "",
  68          "mgc", "mgs", "fid", "fld", NULL};
  69 static const char *libcfs_debug_masks[] =
  70         {"trace", "inode", "super", "ext2",
  71          "malloc", "cache", "info", "ioctl",
  72          "neterror", "net", "warning", "buffs",
  73          "other", "dentry", "nettrace", "page",
  74          "dlmtrace", "error", "emerg", "ha",
  75          "rpctrace", "vfstrace", "reada", "mmap",
  76          "config", "console", "quota", "sec", NULL};
  77
  78 #ifdef __linux__
  79
  80 #define DAEMON_CTL_NAME         "/proc/sys/lnet/daemon_file"
  81 #define SUBSYS_DEBUG_CTL_NAME   "/proc/sys/lnet/subsystem_debug"
  82 #define DEBUG_CTL_NAME          "/proc/sys/lnet/debug"
  83 #define DUMP_KERNEL_CTL_NAME    "/proc/sys/lnet/dump_kernel"
  84
  85 static int
  86 dbg_open_ctlhandle(const char *str)
  87 {
  88         int fd;
  89         fd = open(str, O_WRONLY);
  90         if (fd < 0) {
  91                 fprintf(stderr, "open %s failed: %s\n", str,
  92                         strerror(errno));
  93                 return -1;
  94         }
  95         return fd;
  96 }
  97
  98 static void
  99 dbg_close_ctlhandle(int fd)
 100 {
 101         close(fd);
 102 }
 103
 104 static int
 105 dbg_write_cmd(int fd, char *str, int len)
 106 {
 107         int    rc  = write(fd, str, len);
 108
 109         return (rc == len ? 0 : 1);
 110 }
 111
 112 #elif defined(__DARWIN__)
 113
 114 #define DAEMON_CTL_NAME         "lnet.trace_daemon"
 115 #define SUBSYS_DEBUG_CTL_NAME   "lnet.subsystem_debug"
 116 #define DEBUG_CTL_NAME          "lnet.debug"
 117 #define DUMP_KERNEL_CTL_NAME    "lnet.trace_dumpkernel"
 118
 119 static char     sysctl_name[128];
 120 static int
 121 dbg_open_ctlhandle(const char *str)
 122 {
 123
 124         if (strlen(str)+1 > 128) {
 125                 fprintf(stderr, "sysctl name is too long: %s.\n", str);
 126                 return -1;
 127         }
 128         strcpy(sysctl_name, str);
 129
 130         return 0;
 131 }
 132
 133 static void
 134 dbg_close_ctlhandle(int fd)
 135 {
 136         sysctl_name[0] = '\0';
 137         return;
 138 }
 139
 140 static int
 141 dbg_write_cmd(int fd, char *str, int len)
 142 {
 143         int     rc;
 144
 145         rc = sysctlbyname(sysctl_name, NULL, NULL, str, len+1);
 146         if (rc != 0) {
 147                 fprintf(stderr, "sysctl %s with cmd (%s) error: %d\n",
 148                         sysctl_name, str, errno);
 149         }
 150         return (rc == 0 ? 0: 1);
 151 }
 152
 153 #else
 154 #error - Unknown sysctl convention.
 155 #endif
 156
 157 static int do_debug_mask(char *name, int enable)
 158 {
 159         int found = 0, i;
 160
 161         for (i = 0; libcfs_debug_subsystems[i] != NULL; i++) {
 162                 if (strcasecmp(name, libcfs_debug_subsystems[i]) == 0 ||
 163                     strcasecmp(name, "all_subs") == 0) {
 164                         printf("%s output from subsystem \"%s\"\n",
 165                                 enable ? "Enabling" : "Disabling",
 166                                 libcfs_debug_subsystems[i]);
 167                         if (enable)
 168                                 subsystem_mask |= (1 << i);
 169                         else
 170                                 subsystem_mask &= ~(1 << i);
 171                         found = 1;
 172                 }
 173         }
 174         for (i = 0; libcfs_debug_masks[i] != NULL; i++) {
 175                 if (strcasecmp(name, libcfs_debug_masks[i]) == 0 ||
 176                     strcasecmp(name, "all_types") == 0) {
 177                         printf("%s output of type \"%s\"\n",
 178                                 enable ? "Enabling" : "Disabling",
 179                                 libcfs_debug_masks[i]);
 180                         if (enable)
 181                                 debug_mask |= (1 << i);
 182                         else
 183                                 debug_mask &= ~(1 << i);
 184                         found = 1;
 185                 }
 186         }
 187
 188         return found;
 189 }
 190
 191 int dbg_initialize(int argc, char **argv)
 192 {
 193         return 0;
 194 }
 195
 196 int jt_dbg_filter(int argc, char **argv)
 197 {
 198         int   i;
 199
 200         if (argc < 2) {
 201                 fprintf(stderr, "usage: %s <subsystem ID or debug mask>\n",
 202                         argv[0]);
 203                 return 0;
 204         }
 205
 206         for (i = 1; i < argc; i++)
 207                 if (!do_debug_mask(argv[i], 0))
 208                         fprintf(stderr, "Unknown subsystem or debug type: %s\n",
 209                                 argv[i]);
 210         return 0;
 211 }
 212
 213 int jt_dbg_show(int argc, char **argv)
 214 {
 215         int    i;
 216
 217         if (argc < 2) {
 218                 fprintf(stderr, "usage: %s <subsystem ID or debug mask>\n",
 219                         argv[0]);
 220                 return 0;
 221         }
 222
 223         for (i = 1; i < argc; i++)
 224                 if (!do_debug_mask(argv[i], 1))
 225                         fprintf(stderr, "Unknown subsystem or debug type: %s\n",
 226                                 argv[i]);
 227
 228         return 0;
 229 }
 230
 231 static int applymask(char* procpath, int value)
 232 {
 233         int rc;
 234         char buf[64];
 235         int len = snprintf(buf, 64, "%d", value);
 236
 237         int fd = dbg_open_ctlhandle(procpath);
 238         if (fd == -1) {
 239                 fprintf(stderr, "Unable to open %s: %s\n",
 240                         procpath, strerror(errno));
 241                 return fd;
 242         }
 243         rc = dbg_write_cmd(fd, buf, len+1);
 244         if (rc != 0) {
 245                 fprintf(stderr, "Write to %s failed: %s\n",
 246                         procpath, strerror(errno));
 247         }
 248
 249         dbg_close_ctlhandle(fd);
 250
 251         return rc;
 252 }
 253
 254 static void applymask_all(unsigned int subs_mask, unsigned int debug_mask)
 255 {
 256         if (!dump_filename) {
 257                 applymask(SUBSYS_DEBUG_CTL_NAME, subs_mask);
 258                 applymask(DEBUG_CTL_NAME, debug_mask);
 259         } else {
 260                 struct libcfs_debug_ioctl_data data;
 261
 262                 data.hdr.ioc_len = sizeof(data);
 263                 data.hdr.ioc_version = 0;
 264                 data.subs = subs_mask;
 265                 data.debug = debug_mask;
 266
 267                 dump(OBD_DEV_ID, LIBCFS_IOC_DEBUG_MASK, &data);
 268         }
 269         printf("Applied subsystem_debug=%d, debug=%d to /proc/sys/lnet\n",
 270                subs_mask, debug_mask);
 271 }
 272
 273 int jt_dbg_list(int argc, char **argv)
 274 {
 275         int i;
 276
 277         if (argc != 2) {
 278                 fprintf(stderr, "usage: %s <subs || types>\n", argv[0]);
 279                 return 0;
 280         }
 281
 282         if (strcasecmp(argv[1], "subs") == 0) {
 283                 printf("Subsystems: all_subs");
 284                 for (i = 0; libcfs_debug_subsystems[i] != NULL; i++)
 285                         if (libcfs_debug_subsystems[i][0])
 286                                 printf(", %s", libcfs_debug_subsystems[i]);
 287                 printf("\n");
 288         } else if (strcasecmp(argv[1], "types") == 0) {
 289                 printf("Types: all_types");
 290                 for (i = 0; libcfs_debug_masks[i] != NULL; i++)
 291                         printf(", %s", libcfs_debug_masks[i]);
 292                 printf("\n");
 293         } else if (strcasecmp(argv[1], "applymasks") == 0) {
 294                 applymask_all(subsystem_mask, debug_mask);
 295         }
 296         return 0;
 297 }
 298
 299 /* all strings nul-terminated; only the struct and hdr need to be freed */
 300 struct dbg_line {
 301         struct ptldebug_header *hdr;
 302         char *file;
 303         char *fn;
 304         char *text;
 305 };
 306
 307 static int cmp_rec(const void *p1, const void *p2)
 308 {
 309         struct dbg_line *d1 = *(struct dbg_line **)p1;
 310         struct dbg_line *d2 = *(struct dbg_line **)p2;
 311
 312         if (d1->hdr->ph_sec < d2->hdr->ph_sec)
 313                 return -1;
 314         if (d1->hdr->ph_sec == d2->hdr->ph_sec &&
 315             d1->hdr->ph_usec < d2->hdr->ph_usec)
 316                 return -1;
 317         if (d1->hdr->ph_sec == d2->hdr->ph_sec &&
 318             d1->hdr->ph_usec == d2->hdr->ph_usec)
 319                 return 0;
 320         return 1;
 321 }
 322
 323 static void print_rec(struct dbg_line **linev, int used, FILE *out)
 324 {
 325         int i;
 326
 327         for (i = 0; i < used; i++) {
 328                 struct dbg_line *line = linev[i];
 329                 struct ptldebug_header *hdr = line->hdr;
 330
 331                 fprintf(out, "%08x:%08x:%u:%u.%06llu:%u:%u:%u:(%s:%u:%s()) %s",
 332                         hdr->ph_subsys, hdr->ph_mask, hdr->ph_cpu_id,
 333                         hdr->ph_sec, (unsigned long long)hdr->ph_usec,
 334                         hdr->ph_stack, hdr->ph_pid, hdr->ph_extern_pid,
 335                         line->file, hdr->ph_line_num, line->fn, line->text);
 336                 free(line->hdr);
 337                 free(line);
 338         }
 339         free(linev);
 340 }
 341
 342 static int add_rec(struct dbg_line *line, struct dbg_line ***linevp, int *lenp,
 343                    int used)
 344 {
 345         struct dbg_line **linev = *linevp;
 346
 347         if (used == *lenp) {
 348                 int nlen = *lenp + 512;
 349                 int nsize = nlen * sizeof(struct dbg_line *);
 350
 351                 linev = *linevp ? realloc(*linevp, nsize) : malloc(nsize);
 352                 if (!linev)
 353                         return 0;
 354                 *linevp = linev;
 355                 *lenp = nlen;
 356         }
 357         linev[used] = line;
 358         return 1;
 359 }
 360
 361 static int parse_buffer(FILE *in, FILE *out)
 362 {
 363         struct dbg_line *line;
 364         struct ptldebug_header *hdr;
 365         char buf[4097], *p;
 366         int rc;
 367         unsigned long dropped = 0, kept = 0;
 368         struct dbg_line **linev = NULL;
 369         int linev_len = 0;
 370
 371         while (1) {
 372                 rc = fread(buf, sizeof(hdr->ph_len) + sizeof(hdr->ph_flags), 1, in);
 373                 if (rc <= 0)
 374                         break;
 375
 376                 hdr = (void *)buf;
 377                 if (hdr->ph_len == 0)
 378                         break;
 379                 if (hdr->ph_len > 4094) {
 380                         fprintf(stderr, "unexpected large record: %d bytes.  "
 381                                 "aborting.\n",
 382                                 hdr->ph_len);
 383                         break;
 384                 }
 385
 386                 rc = fread(buf + sizeof(hdr->ph_len) + sizeof(hdr->ph_flags), 1,
 387                            hdr->ph_len - sizeof(hdr->ph_len) - sizeof(hdr->ph_flags), in);
 388                 if (rc <= 0)
 389                         break;
 390
 391                 if ((hdr->ph_subsys && !(subsystem_mask & hdr->ph_subsys)) ||
 392                     (hdr->ph_mask   && !(debug_mask & hdr->ph_mask))) {
 393                         dropped++;
 394                         continue;
 395                 }
 396
 397                 line = malloc(sizeof(*line));
 398                 if (line == NULL) {
 399                         fprintf(stderr, "malloc failed; printing accumulated "
 400                                 "records and exiting.\n");
 401                         break;
 402                 }
 403
 404                 line->hdr = malloc(hdr->ph_len + 1);
 405                 if (line->hdr == NULL) {
 406                         free(line);
 407                         fprintf(stderr, "malloc failed; printing accumulated "
 408                                 "records and exiting.\n");
 409                         break;
 410                 }
 411
 412                 p = (void *)line->hdr;
 413                 memcpy(line->hdr, buf, hdr->ph_len);
 414                 p[hdr->ph_len] = '\0';
 415
 416                 p += sizeof(*hdr);
 417                 line->file = p;
 418                 p += strlen(line->file) + 1;
 419                 line->fn = p;
 420                 p += strlen(line->fn) + 1;
 421                 line->text = p;
 422
 423                 if (!add_rec(line, &linev, &linev_len, kept)) {
 424                         fprintf(stderr, "malloc failed; printing accumulated "
 425                                 "records and exiting.\n");
 426                         break;
 427                 }
 428                 kept++;
 429         }
 430
 431         if (linev) {
 432                 qsort(linev, kept, sizeof(struct dbg_line *), cmp_rec);
 433                 print_rec(linev, kept, out);
 434         }
 435
 436         printf("Debug log: %lu lines, %lu kept, %lu dropped.\n",
 437                 dropped + kept, kept, dropped);
 438         return 0;
 439 }
 440
 441 int jt_dbg_debug_kernel(int argc, char **argv)
 442 {
 443         char filename[4096];
 444         struct stat st;
 445         int rc, raw = 0, fd;
 446         FILE *in, *out = stdout;
 447
 448         if (argc > 3) {
 449                 fprintf(stderr, "usage: %s [file] [raw]\n", argv[0]);
 450                 return 0;
 451         }
 452
 453         if (argc > 2) {
 454                 raw = atoi(argv[2]);
 455         } else if (argc > 1 && (argv[1][0] == '0' || argv[1][0] == '1')) {
 456                 raw = atoi(argv[1]);
 457                 argc--;
 458         }
 459
 460         /* If we are dumping raw (which means no conversion step to ASCII)
 461          * then dump directly to any supplied filename, otherwise this is
 462          * just a temp file and we dump to the real file at convert time. */
 463         if (argc > 1 && raw)
 464                 strcpy(filename, argv[1]);
 465         else
 466                 sprintf(filename, "/tmp/lustre-log."CFS_TIME_T".%u",
 467                         time(NULL),getpid());
 468
 469         if (stat(filename, &st) == 0 && S_ISREG(st.st_mode))
 470                 unlink(filename);
 471
 472         fd = dbg_open_ctlhandle(DUMP_KERNEL_CTL_NAME);
 473         if (fd < 0) {
 474                 fprintf(stderr, "open(dump_kernel) failed: %s\n",
 475                         strerror(errno));
 476                 return 1;
 477         }
 478
 479         rc = dbg_write_cmd(fd, filename, strlen(filename));
 480         if (rc != 0) {
 481                 fprintf(stderr, "write(%s) failed: %s\n", filename,
 482                         strerror(errno));
 483                 dbg_close_ctlhandle(fd);
 484                 return 1;
 485         }
 486         dbg_close_ctlhandle(fd);
 487
 488         if (raw)
 489                 return 0;
 490
 491         in = fopen(filename, "r");
 492         if (in == NULL) {
 493                 if (errno == ENOENT) /* no dump file created */
 494                         return 0;
 495
 496                 fprintf(stderr, "fopen(%s) failed: %s\n", filename,
 497                         strerror(errno));
 498                 return 1;
 499         }
 500         if (argc > 1) {
 501                 out = fopen(argv[1], "w");
 502                 if (out == NULL) {
 503                         fprintf(stderr, "fopen(%s) failed: %s\n", argv[1],
 504                                 strerror(errno));
 505                         fclose(in);
 506                         return 1;
 507                 }
 508         }
 509
 510         rc = parse_buffer(in, out);
 511         fclose(in);
 512         if (argc > 1)
 513                 fclose(out);
 514         if (rc) {
 515                 fprintf(stderr, "parse_buffer failed; leaving tmp file %s "
 516                         "behind.\n", filename);
 517         } else {
 518                 rc = unlink(filename);
 519                 if (rc)
 520                         fprintf(stderr, "dumped successfully, but couldn't "
 521                                 "unlink tmp file %s: %s\n", filename,
 522                                 strerror(errno));
 523         }
 524         return rc;
 525 }
 526
 527 int jt_dbg_debug_file(int argc, char **argv)
 528 {
 529         int    fdin;
 530         int    fdout;
 531         FILE  *in;
 532         FILE  *out = stdout;
 533         int    rc;
 534
 535         if (argc > 3 || argc < 2) {
 536                 fprintf(stderr, "usage: %s <input> [output]\n", argv[0]);
 537                 return 0;
 538         }
 539
 540         fdin = open(argv[1], O_RDONLY | O_LARGEFILE);
 541         if (fdin == -1) {
 542                 fprintf(stderr, "open(%s) failed: %s\n", argv[1],
 543                         strerror(errno));
 544                 return 1;
 545         }
 546         in = fdopen(fdin, "r");
 547         if (in == NULL) {
 548                 fprintf(stderr, "fopen(%s) failed: %s\n", argv[1],
 549                         strerror(errno));
 550                 close(fdin);
 551                 return 1;
 552         }
 553         if (argc > 2) {
 554                 fdout = open(argv[2],
 555                              O_CREAT | O_TRUNC | O_WRONLY | O_LARGEFILE,
 556                              0600);
 557                 if (fdout == -1) {
 558                         fprintf(stderr, "open(%s) failed: %s\n", argv[2],
 559                                 strerror(errno));
 560                         fclose(in);
 561                         return 1;
 562                 }
 563                 out = fdopen(fdout, "w");
 564                 if (out == NULL) {
 565                         fprintf(stderr, "fopen(%s) failed: %s\n", argv[2],
 566                                 strerror(errno));
 567                         fclose(in);
 568                         close(fdout);
 569                         return 1;
 570                 }
 571         }
 572
 573         rc = parse_buffer(in, out);
 574
 575         fclose(in);
 576         if (out != stdout)
 577                 fclose(out);
 578
 579         return rc;
 580 }
 581
 582 const char debug_daemon_usage[] = "usage: %s {start file [MB]|stop}\n";
 583
 584 int jt_dbg_debug_daemon(int argc, char **argv)
 585 {
 586         int  rc;
 587         int  fd;
 588
 589         if (argc <= 1) {
 590                 fprintf(stderr, debug_daemon_usage, argv[0]);
 591                 return 1;
 592         }
 593
 594         fd = dbg_open_ctlhandle(DAEMON_CTL_NAME);
 595         if (fd < 0)
 596                 return -1;
 597
 598         rc = -1;
 599         if (strcasecmp(argv[1], "start") == 0) {
 600              if (argc < 3 || argc > 4 ||
 601                     (argc == 4 && strlen(argv[3]) > 5)) {
 602                         fprintf(stderr, debug_daemon_usage, argv[0]);
 603                         goto out;
 604                 }
 605                 if (argc == 4) {
 606                         char       buf[12];
 607                         const long min_size = 10;
 608                         const long max_size = 20480;
 609                         long       size;
 610                         char      *end;
 611
 612                         size = strtoul(argv[3], &end, 0);
 613                         if (size < min_size ||
 614                             size > max_size ||
 615                             *end != 0) {
 616                                 fprintf(stderr, "size %s invalid, must be in "
 617                                         "the range %ld-%ld MB\n", argv[3],
 618                                         min_size, max_size);
 619                                 goto out;
 620                         }
 621                         snprintf(buf, sizeof(buf), "size=%ld", size);
 622                         rc = dbg_write_cmd(fd, buf, strlen(buf));
 623
 624                         if (rc != 0) {
 625                                 fprintf(stderr, "set %s failed: %s\n",
 626                                         buf, strerror(errno));
 627                                 goto out;
 628                         }
 629                 }
 630
 631                 rc = dbg_write_cmd(fd, argv[2], strlen(argv[2]));
 632                 if (rc != 0) {
 633                         fprintf(stderr, "start debug_daemon on %s failed: %s\n",
 634                                 argv[2], strerror(errno));
 635                         goto out;
 636                 }
 637                 rc = 0;
 638                 goto out;
 639         }
 640         if (strcasecmp(argv[1], "stop") == 0) {
 641                 rc = dbg_write_cmd(fd, "stop", 4);
 642                 if (rc != 0) {
 643                         fprintf(stderr, "stopping debug_daemon failed: %s\n",
 644                                 strerror(errno));
 645                         goto out;
 646                 }
 647
 648                 rc = 0;
 649                 goto out;
 650         }
 651
 652         fprintf(stderr, debug_daemon_usage, argv[0]);
 653         rc = -1;
 654 out:
 655         dbg_close_ctlhandle(fd);
 656         return rc;
 657 }
 658
 659 int jt_dbg_clear_debug_buf(int argc, char **argv)
 660 {
 661         int rc;
 662         struct libcfs_ioctl_data data;
 663
 664         if (argc != 1) {
 665                 fprintf(stderr, "usage: %s\n", argv[0]);
 666                 return 0;
 667         }
 668
 669         memset(&data, 0, sizeof(data));
 670         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 671                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 672                 return -1;
 673         }
 674
 675         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_CLEAR_DEBUG, buf);
 676         if (rc) {
 677                 fprintf(stderr, "IOC_LIBCFS_CLEAR_DEBUG failed: %s\n",
 678                         strerror(errno));
 679                 return -1;
 680         }
 681         return 0;
 682 }
 683
 684 int jt_dbg_mark_debug_buf(int argc, char **argv)
 685 {
 686         static char scratch[MAX_MARK_SIZE] = { '\0' };
 687         int rc, max_size = MAX_MARK_SIZE-1;
 688         struct libcfs_ioctl_data data = { 0 };
 689         char *text;
 690         time_t now = time(NULL);
 691
 692         if (argc > 1) {
 693                 int count;
 694                 text = scratch;
 695                 strncpy(text, argv[1], max_size);
 696                 max_size-=strlen(argv[1]);
 697                 for (count = 2; (count < argc) && (max_size > 0); count++){
 698                         strncat(text, " ", max_size);
 699                         max_size -= 1;
 700                         strncat(text, argv[count], max_size);
 701                         max_size -= strlen(argv[count]);
 702                 }
 703         } else {
 704                 text = ctime(&now);
 705         }
 706
 707         data.ioc_inllen1 = strlen(text) + 1;
 708         data.ioc_inlbuf1 = text;
 709         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 710                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 711                 return -1;
 712         }
 713
 714         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_MARK_DEBUG, buf);
 715         if (rc) {
 716                 fprintf(stderr, "IOC_LIBCFS_MARK_DEBUG failed: %s\n",
 717                         strerror(errno));
 718                 return -1;
 719         }
 720         return 0;
 721 }
 722
 723 static struct mod_paths {
 724         char *name, *path;
 725 } mod_paths[] = {
 726         {"libcfs", "libcfs/libcfs"},
 727         {"lnet", "lnet/lnet"},
 728         {"kciblnd", "lnet/klnds/ciblnd"},
 729         {"kgmlnd", "lnet/klnds/gmlnd"},
 730         {"kmxlnd", "lnet/klnds/mxlnd"},
 731         {"kiiblnd", "lnet/klnds/iiblnd"},
 732         {"ko2iblnd", "lnet/klnds/o2iblnd"},
 733         {"kopeniblnd", "lnet/klnds/openiblnd"},
 734         {"kptllnd", "lnet/klnds/ptllnd"},
 735         {"kqswlnd", "lnet/klnds/qswlnd"},
 736         {"kralnd", "lnet/klnds/ralnd"},
 737         {"ksocklnd", "lnet/klnds/socklnd"},
 738         {"ktdilnd", "lnet/klnds/tdilnd"},
 739         {"kviblnd", "lnet/klnds/viblnd"},
 740         {"lvfs", "lustre/lvfs"},
 741         {"obdclass", "lustre/obdclass"},
 742         {"llog_test", "lustre/obdclass"},
 743         {"ptlrpc_gss", "lustre/ptlrpc/gss"},
 744         {"ptlrpc", "lustre/ptlrpc"},
 745         {"gks", "lustre/sec/gks"},
 746         {"gkc", "lustre/sec/gks"},
 747         {"ost", "lustre/ost"},
 748         {"osc", "lustre/osc"},
 749         {"mds", "lustre/mds"},
 750         {"mdc", "lustre/mdc"},
 751         {"llite", "lustre/llite"},
 752         {"lustre", "lustre/llite"},
 753         {"llite_lloop", "lustre/llite"},
 754         {"ldiskfs", "ldiskfs/ldiskfs"},
 755         {"smfs", "lustre/smfs"},
 756         {"obdecho", "lustre/obdecho"},
 757         {"ldlm", "lustre/ldlm"},
 758         {"obdfilter", "lustre/obdfilter"},
 759         {"lov", "lustre/lov"},
 760         {"lmv", "lustre/lmv"},
 761         {"fsfilt_ext3", "lustre/lvfs"},
 762         {"fsfilt_reiserfs", "lustre/lvfs"},
 763         {"fsfilt_smfs", "lustre/lvfs"},
 764         {"fsfilt_ldiskfs", "lustre/lvfs"},
 765         {"mds_ext3", "lustre/mds"},
 766         {"cobd", "lustre/cobd"},
 767         {"cmobd", "lustre/cmobd"},
 768         {"lquota", "lustre/quota"},
 769         {"mgs", "lustre/mgs"},
 770         {"mgc", "lustre/mgc"},
 771         {"mdt", "lustre/mdt"},
 772         {"mdd", "lustre/mdd"},
 773         {"osd", "lustre/osd"},
 774         {"cmm", "lustre/cmm"},
 775         {"fid", "lustre/fid"},
 776         {"fld", "lustre/fld"},
 777         {NULL, NULL}
 778 };
 779
 780 static int jt_dbg_modules_2_4(int argc, char **argv)
 781 {
 782         return -EINVAL;
 783 }
 784
 785 static int jt_dbg_modules_2_5(int argc, char **argv)
 786 {
 787         struct mod_paths *mp;
 788         char *path = "";
 789         char *kernel = "linux";
 790         const char *proc = "/proc/modules";
 791         char modname[128], buf[4096];
 792         long modaddr;
 793         FILE *file;
 794
 795         if (argc >= 2)
 796                 path = argv[1];
 797         if (argc == 3)
 798                 kernel = argv[2];
 799         if (argc > 3) {
 800                 printf("%s [path] [kernel]\n", argv[0]);
 801                 return 0;
 802         }
 803
 804         file = fopen(proc, "r");
 805         if (!file) {
 806                 printf("failed open %s: %s\n", proc, strerror(errno));
 807                 return 0;
 808         }
 809
 810         while (fgets(buf, sizeof(buf), file) != NULL) {
 811                 if (sscanf(buf, "%s %*s %*s %*s %*s %lx", modname, &modaddr) == 2) {
 812                         for (mp = mod_paths; mp->name != NULL; mp++) {
 813                                 if (!strcmp(mp->name, modname))
 814                                         break;
 815                         }
 816                         if (mp->name) {
 817                                 printf("add-symbol-file %s%s%s/%s.o 0x%0lx\n",
 818                                        path, path[0] ? "/" : "",
 819                                        mp->path, mp->name, modaddr);
 820                         }
 821                 }
 822         }
 823
 824         fclose(file);
 825         return 0;
 826 }
 827
 828 int jt_dbg_modules(int argc, char **argv)
 829 {
 830         int rc = 0;
 831         struct utsname sysinfo;
 832
 833         rc = uname(&sysinfo);
 834         if (rc) {
 835                 printf("uname() failed: %s\n", strerror(errno));
 836                 return 0;
 837         }
 838
 839         if (sysinfo.release[2] > '4') {
 840                 return jt_dbg_modules_2_5(argc, argv);
 841         } else {
 842                 return jt_dbg_modules_2_4(argc, argv);
 843         }
 844
 845         return 0;
 846 }
 847
 848 int jt_dbg_panic(int argc, char **argv)
 849 {
 850         int rc;
 851         struct libcfs_ioctl_data data;
 852
 853         if (argc != 1) {
 854                 fprintf(stderr, "usage: %s\n", argv[0]);
 855                 return 0;
 856         }
 857
 858         memset(&data, 0, sizeof(data));
 859         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 860                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 861                 return -1;
 862         }
 863
 864         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_PANIC, buf);
 865         if (rc) {
 866                 fprintf(stderr, "IOC_LIBCFS_PANIC failed: %s\n",
 867                         strerror(errno));
 868                 return -1;
 869         }
 870         return 0;
 871 }