lnet/utils/debug.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * Copyright (C) 2001, 2002 Cluster File Systems, Inc.
   5  *
   6  *   This file is part of Lustre Networking, http://www.lustre.org.
   7  *
   8  *   LNET is free software; you can redistribute it and/or
   9  *   modify it under the terms of version 2 of the GNU General Public
  10  *   License as published by the Free Software Foundation.
  11  *
  12  *   LNET is distributed in the hope that it will be useful,
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *   GNU General Public License for more details.
  16  *
  17  *   You should have received a copy of the GNU General Public License
  18  *   along with LNET; if not, write to the Free Software
  19  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  *
  21  * Some day I'll split all of this functionality into a cfs_debug module
  22  * of its own.  That day is not today.
  23  *
  24  */
  25
  26 #define __USE_FILE_OFFSET64
  27 #define  _GNU_SOURCE
  28
  29 #include <stdio.h>
  30 #ifdef HAVE_NETDB_H
  31 #include <netdb.h>
  32 #endif
  33 #include <stdlib.h>
  34 #include <string.h>
  35 #ifdef HAVE_SYS_IOCTL_H
  36 #include <sys/ioctl.h>
  37 #endif
  38 #ifndef _IOWR
  39 #include "ioctl.h"
  40 #endif
  41 #include <fcntl.h>
  42 #include <errno.h>
  43 #include <unistd.h>
  44 #include <assert.h>
  45
  46 #include <sys/types.h>
  47 #include <sys/socket.h>
  48 #include <sys/ioctl.h>
  49 #include <sys/stat.h>
  50 #include <sys/mman.h>
  51 #include <sys/utsname.h>
  52
  53 #include <lnet/api-support.h>
  54 #include <lnet/lnetctl.h>
  55 #include <libcfs/portals_utils.h>
  56 #include "parser.h"
  57
  58 #include <time.h>
  59
  60 static char rawbuf[8192];
  61 static char *buf = rawbuf;
  62 static int max = 8192;
  63 /*static int g_pfd = -1;*/
  64 static int subsystem_mask = ~0;
  65 static int debug_mask = ~0;
  66
  67 #define MAX_MARK_SIZE 256
  68
  69 static const char *libcfs_debug_subsystems[] =
  70         {"undefined", "mdc", "mds", "osc",
  71          "ost", "class", "log", "llite",
  72          "rpc", "", "lnet", "lnd",
  73          "pinger", "filter", "", "echo",
  74          "ldlm", "lov", "", "",
  75          "", "", "", "lmv",
  76          "", "sec", "gss", "", "mgc", "mgs",
  77          "fid", "fld", NULL};
  78 static const char *libcfs_debug_masks[] =
  79         {"trace", "inode", "super", "ext2",
  80          "malloc", "cache", "info", "ioctl",
  81          "blocks", "net", "warning", "buffs",
  82          "other", "dentry", "lnet", "page",
  83          "dlmtrace", "error", "emerg", "ha",
  84          "rpctrace", "vfstrace", "reada", "mmap",
  85          "config", "console", "quota", "sec", NULL};
  86
  87 struct debug_daemon_cmd {
  88         char *cmd;
  89         unsigned int cmdv;
  90 };
  91
  92 static const struct debug_daemon_cmd libcfs_debug_daemon_cmd[] = {
  93         {"start", DEBUG_DAEMON_START},
  94         {"stop", DEBUG_DAEMON_STOP},
  95         {0, 0}
  96 };
  97
  98 #ifdef __linux__
  99
 100 #define DAEMON_CTL_NAME         "/proc/sys/lnet/daemon_file"
 101 #define SUBSYS_DEBUG_CTL_NAME   "/proc/sys/lnet/subsystem_debug"
 102 #define DEBUG_CTL_NAME          "/proc/sys/lnet/debug"
 103 #define DUMP_KERNEL_CTL_NAME    "/proc/sys/lnet/dump_kernel"
 104
 105 static int
 106 dbg_open_ctlhandle(const char *str)
 107 {
 108         int fd;
 109         fd = open(str, O_WRONLY);
 110         if (fd < 0) {
 111                 fprintf(stderr, "open %s failed: %s\n", str,
 112                         strerror(errno));
 113                 return -1;
 114         }
 115         return fd;
 116 }
 117
 118 static void
 119 dbg_close_ctlhandle(int fd)
 120 {
 121         close(fd);
 122 }
 123
 124 static int
 125 dbg_write_cmd(int fd, char *str, int len)
 126 {
 127         int    rc  = write(fd, str, len);
 128
 129         return (rc == len ? 0 : 1);
 130 }
 131
 132 #elif defined(__DARWIN__)
 133
 134 #define DAEMON_CTL_NAME         "lnet.trace_daemon"
 135 #define SUBSYS_DEBUG_CTL_NAME   "lnet.subsystem_debug"
 136 #define DEBUG_CTL_NAME          "lnet.debug"
 137 #define DUMP_KERNEL_CTL_NAME    "lnet.trace_dumpkernel"
 138
 139 static char     sysctl_name[128];
 140 static int
 141 dbg_open_ctlhandle(const char *str)
 142 {
 143
 144         if (strlen(str)+1 > 128) {
 145                 fprintf(stderr, "sysctl name is too long: %s.\n", str);
 146                 return -1;
 147         }
 148         strcpy(sysctl_name, str);
 149
 150         return 0;
 151 }
 152
 153 static void
 154 dbg_close_ctlhandle(int fd)
 155 {
 156         sysctl_name[0] = '\0';
 157         return;
 158 }
 159
 160 static int
 161 dbg_write_cmd(int fd, char *str, int len)
 162 {
 163         int     rc;
 164
 165         rc = sysctlbyname(sysctl_name, NULL, NULL, str, len+1);
 166         if (rc != 0) {
 167                 fprintf(stderr, "sysctl %s with cmd (%s) error: %d\n",
 168                         sysctl_name, str, errno);
 169         }
 170         return (rc == 0 ? 0: 1);
 171 }
 172
 173 #else
 174 #error - Unknown sysctl convention.
 175 #endif
 176
 177 static int do_debug_mask(char *name, int enable)
 178 {
 179         int found = 0, i;
 180
 181         for (i = 0; libcfs_debug_subsystems[i] != NULL; i++) {
 182                 if (strcasecmp(name, libcfs_debug_subsystems[i]) == 0 ||
 183                     strcasecmp(name, "all_subs") == 0) {
 184                         printf("%s output from subsystem \"%s\"\n",
 185                                 enable ? "Enabling" : "Disabling",
 186                                 libcfs_debug_subsystems[i]);
 187                         if (enable)
 188                                 subsystem_mask |= (1 << i);
 189                         else
 190                                 subsystem_mask &= ~(1 << i);
 191                         found = 1;
 192                 }
 193         }
 194         for (i = 0; libcfs_debug_masks[i] != NULL; i++) {
 195                 if (strcasecmp(name, libcfs_debug_masks[i]) == 0 ||
 196                     strcasecmp(name, "all_types") == 0) {
 197                         printf("%s output of type \"%s\"\n",
 198                                 enable ? "Enabling" : "Disabling",
 199                                 libcfs_debug_masks[i]);
 200                         if (enable)
 201                                 debug_mask |= (1 << i);
 202                         else
 203                                 debug_mask &= ~(1 << i);
 204                         found = 1;
 205                 }
 206         }
 207
 208         return found;
 209 }
 210
 211 int dbg_initialize(int argc, char **argv)
 212 {
 213         return 0;
 214 }
 215
 216 int jt_dbg_filter(int argc, char **argv)
 217 {
 218         int   i;
 219
 220         if (argc < 2) {
 221                 fprintf(stderr, "usage: %s <subsystem ID or debug mask>\n",
 222                         argv[0]);
 223                 return 0;
 224         }
 225
 226         for (i = 1; i < argc; i++)
 227                 if (!do_debug_mask(argv[i], 0))
 228                         fprintf(stderr, "Unknown subsystem or debug type: %s\n",
 229                                 argv[i]);
 230         return 0;
 231 }
 232
 233 int jt_dbg_show(int argc, char **argv)
 234 {
 235         int    i;
 236
 237         if (argc < 2) {
 238                 fprintf(stderr, "usage: %s <subsystem ID or debug mask>\n",
 239                         argv[0]);
 240                 return 0;
 241         }
 242
 243         for (i = 1; i < argc; i++)
 244                 if (!do_debug_mask(argv[i], 1))
 245                         fprintf(stderr, "Unknown subsystem or debug type: %s\n",
 246                                 argv[i]);
 247
 248         return 0;
 249 }
 250
 251 static int applymask(char* procpath, int value)
 252 {
 253         int rc;
 254         char buf[64];
 255         int len = snprintf(buf, 64, "%d", value);
 256
 257         int fd = dbg_open_ctlhandle(procpath);
 258         if (fd == -1) {
 259                 fprintf(stderr, "Unable to open %s: %s\n",
 260                         procpath, strerror(errno));
 261                 return fd;
 262         }
 263         rc = dbg_write_cmd(fd, buf, len+1);
 264         if (rc != 0) {
 265                 fprintf(stderr, "Write to %s failed: %s\n",
 266                         procpath, strerror(errno));
 267                 return rc;
 268         }
 269         dbg_close_ctlhandle(fd);
 270         return 0;
 271 }
 272
 273 static void applymask_all(unsigned int subs_mask, unsigned int debug_mask)
 274 {
 275         if (!dump_filename) {
 276                 applymask(SUBSYS_DEBUG_CTL_NAME, subs_mask);
 277                 applymask(DEBUG_CTL_NAME, debug_mask);
 278         } else {
 279                 struct libcfs_debug_ioctl_data data;
 280
 281                 data.hdr.ioc_len = sizeof(data);
 282                 data.hdr.ioc_version = 0;
 283                 data.subs = subs_mask;
 284                 data.debug = debug_mask;
 285
 286                 dump(OBD_DEV_ID, LIBCFS_IOC_DEBUG_MASK, &data);
 287         }
 288         printf("Applied subsystem_debug=%d, debug=%d to /proc/sys/lnet\n",
 289                subs_mask, debug_mask);
 290 }
 291
 292 int jt_dbg_list(int argc, char **argv)
 293 {
 294         int i;
 295
 296         if (argc != 2) {
 297                 fprintf(stderr, "usage: %s <subs || types>\n", argv[0]);
 298                 return 0;
 299         }
 300
 301         if (strcasecmp(argv[1], "subs") == 0) {
 302                 printf("Subsystems: all_subs");
 303                 for (i = 0; libcfs_debug_subsystems[i] != NULL; i++)
 304                         if (libcfs_debug_subsystems[i][0])
 305                                 printf(", %s", libcfs_debug_subsystems[i]);
 306                 printf("\n");
 307         } else if (strcasecmp(argv[1], "types") == 0) {
 308                 printf("Types: all_types");
 309                 for (i = 0; libcfs_debug_masks[i] != NULL; i++)
 310                         printf(", %s", libcfs_debug_masks[i]);
 311                 printf("\n");
 312         } else if (strcasecmp(argv[1], "applymasks") == 0) {
 313                 applymask_all(subsystem_mask, debug_mask);
 314         }
 315         return 0;
 316 }
 317
 318 /* all strings nul-terminated; only the struct and hdr need to be freed */
 319 struct dbg_line {
 320         struct ptldebug_header *hdr;
 321         char *file;
 322         char *fn;
 323         char *text;
 324         struct list_head chain;
 325 };
 326
 327 /* nurr. */
 328 static void list_add_ordered(struct dbg_line *new, struct list_head *head)
 329 {
 330         struct list_head *pos;
 331         struct dbg_line *curr;
 332
 333         list_for_each(pos, head) {
 334                 curr = list_entry(pos, struct dbg_line, chain);
 335
 336                 if (curr->hdr->ph_sec < new->hdr->ph_sec)
 337                         continue;
 338                 if (curr->hdr->ph_sec == new->hdr->ph_sec &&
 339                     curr->hdr->ph_usec < new->hdr->ph_usec)
 340                         continue;
 341
 342                 list_add(&new->chain, pos->prev);
 343                 return;
 344         }
 345         list_add_tail(&new->chain, head);
 346 }
 347
 348 static void print_saved_records(struct list_head *list, FILE *out)
 349 {
 350         struct list_head *pos, *tmp;
 351
 352         list_for_each_safe(pos, tmp, list) {
 353                 struct dbg_line *line;
 354                 struct ptldebug_header *hdr;
 355
 356                 line = list_entry(pos, struct dbg_line, chain);
 357                 list_del(&line->chain);
 358
 359                 hdr = line->hdr;
 360                 fprintf(out, "%08x:%08x:%u:%u.%06llu:%u:%u:%u:(%s:%u:%s()) %s",
 361                         hdr->ph_subsys, hdr->ph_mask, hdr->ph_cpu_id,
 362                         hdr->ph_sec, (unsigned long long)hdr->ph_usec,
 363                         hdr->ph_stack, hdr->ph_pid, hdr->ph_extern_pid,
 364                         line->file, hdr->ph_line_num, line->fn, line->text);
 365                 free(line->hdr);
 366                 free(line);
 367         }
 368 }
 369
 370 static int parse_buffer(FILE *in, FILE *out)
 371 {
 372         struct dbg_line *line;
 373         struct ptldebug_header *hdr;
 374         char buf[4097], *p;
 375         int rc;
 376         unsigned long dropped = 0, kept = 0;
 377         struct list_head chunk_list;
 378
 379         CFS_INIT_LIST_HEAD(&chunk_list);
 380
 381         while (1) {
 382                 rc = fread(buf, sizeof(hdr->ph_len) + sizeof(hdr->ph_flags), 1, in);
 383                 if (rc <= 0)
 384                         break;
 385
 386                 hdr = (void *)buf;
 387                 if (hdr->ph_len == 0)
 388                         break;
 389                 if (hdr->ph_len > 4094) {
 390                         fprintf(stderr, "unexpected large record: %d bytes.  "
 391                                 "aborting.\n",
 392                                 hdr->ph_len);
 393                         break;
 394                 }
 395
 396                 if (hdr->ph_flags & PH_FLAG_FIRST_RECORD) {
 397                         print_saved_records(&chunk_list, out);
 398                         assert(list_empty(&chunk_list));
 399                 }
 400
 401                 rc = fread(buf + sizeof(hdr->ph_len) + sizeof(hdr->ph_flags), 1,
 402                            hdr->ph_len - sizeof(hdr->ph_len) - sizeof(hdr->ph_flags), in);
 403                 if (rc <= 0)
 404                         break;
 405
 406                 if (hdr->ph_mask &&
 407                     (!(subsystem_mask & hdr->ph_subsys) ||
 408                      (!(debug_mask & hdr->ph_mask)))) {
 409                         dropped++;
 410                         continue;
 411                 }
 412
 413                 line = malloc(sizeof(*line));
 414                 if (line == NULL) {
 415                         fprintf(stderr, "malloc failed; printing accumulated "
 416                                 "records and exiting.\n");
 417                         break;
 418                 }
 419
 420                 line->hdr = malloc(hdr->ph_len + 1);
 421                 if (line->hdr == NULL) {
 422                         free(line);
 423                         fprintf(stderr, "malloc failed; printing accumulated "
 424                                 "records and exiting.\n");
 425                         break;
 426                 }
 427
 428                 p = (void *)line->hdr;
 429                 memcpy(line->hdr, buf, hdr->ph_len);
 430                 p[hdr->ph_len] = '\0';
 431
 432                 p += sizeof(*hdr);
 433                 line->file = p;
 434                 p += strlen(line->file) + 1;
 435                 line->fn = p;
 436                 p += strlen(line->fn) + 1;
 437                 line->text = p;
 438
 439                 list_add_ordered(line, &chunk_list);
 440                 kept++;
 441         }
 442
 443         print_saved_records(&chunk_list, out);
 444
 445         printf("Debug log: %lu lines, %lu kept, %lu dropped.\n",
 446                 dropped + kept, kept, dropped);
 447         return 0;
 448 }
 449
 450 int jt_dbg_debug_kernel(int argc, char **argv)
 451 {
 452         char filename[4096];
 453         struct stat st;
 454         int rc, raw = 0, fd;
 455         FILE *in, *out = stdout;
 456
 457         if (argc > 3) {
 458                 fprintf(stderr, "usage: %s [file] [raw]\n", argv[0]);
 459                 return 0;
 460         }
 461
 462         if (argc > 2) {
 463                 raw = atoi(argv[2]);
 464         } else if (argc > 1 && (argv[1][0] == '0' || argv[1][0] == '1')) {
 465                 raw = atoi(argv[1]);
 466                 argc--;
 467         }
 468
 469         /* If we are dumping raw (which means no conversion step to ASCII)
 470          * then dump directly to any supplied filename, otherwise this is
 471          * just a temp file and we dump to the real file at convert time. */
 472         if (argc > 1 && raw)
 473                 strcpy(filename, argv[1]);
 474         else
 475                 sprintf(filename, "/tmp/lustre-log.%lu.%u",time(NULL),getpid());
 476
 477         if (stat(filename, &st) == 0 && S_ISREG(st.st_mode))
 478                 unlink(filename);
 479
 480         fd = dbg_open_ctlhandle(DUMP_KERNEL_CTL_NAME);
 481         if (fd < 0) {
 482                 fprintf(stderr, "open(dump_kernel) failed: %s\n",
 483                         strerror(errno));
 484                 return 1;
 485         }
 486
 487         rc = dbg_write_cmd(fd, filename, strlen(filename));
 488         if (rc != 0) {
 489                 fprintf(stderr, "write(%s) failed: %s\n", filename,
 490                         strerror(errno));
 491                 close(fd);
 492                 return 1;
 493         }
 494         dbg_close_ctlhandle(fd);
 495
 496         if (raw)
 497                 return 0;
 498
 499         in = fopen(filename, "r");
 500         if (in == NULL) {
 501                 if (errno == ENOENT) /* no dump file created */
 502                         return 0;
 503
 504                 fprintf(stderr, "fopen(%s) failed: %s\n", filename,
 505                         strerror(errno));
 506                 return 1;
 507         }
 508         if (argc > 1) {
 509                 out = fopen(argv[1], "w");
 510                 if (out == NULL) {
 511                         fprintf(stderr, "fopen(%s) failed: %s\n", argv[1],
 512                                 strerror(errno));
 513                         fclose(in);
 514                         return 1;
 515                 }
 516         }
 517
 518         rc = parse_buffer(in, out);
 519         fclose(in);
 520         if (argc > 1)
 521                 fclose(out);
 522         if (rc) {
 523                 fprintf(stderr, "parse_buffer failed; leaving tmp file %s "
 524                         "behind.\n", filename);
 525         } else {
 526                 rc = unlink(filename);
 527                 if (rc)
 528                         fprintf(stderr, "dumped successfully, but couldn't "
 529                                 "unlink tmp file %s: %s\n", filename,
 530                                 strerror(errno));
 531         }
 532         return rc;
 533 }
 534
 535 int jt_dbg_debug_file(int argc, char **argv)
 536 {
 537         int    fdin;
 538         int    fdout;
 539         FILE  *in;
 540         FILE  *out = stdout;
 541         int    rc;
 542
 543         if (argc > 3 || argc < 2) {
 544                 fprintf(stderr, "usage: %s <input> [output]\n", argv[0]);
 545                 return 0;
 546         }
 547
 548         fdin = open(argv[1], O_RDONLY | O_LARGEFILE);
 549         if (fdin == -1) {
 550                 fprintf(stderr, "open(%s) failed: %s\n", argv[1],
 551                         strerror(errno));
 552                 return 1;
 553         }
 554         in = fdopen(fdin, "r");
 555         if (in == NULL) {
 556                 fprintf(stderr, "fopen(%s) failed: %s\n", argv[1],
 557                         strerror(errno));
 558                 close(fdin);
 559                 return 1;
 560         }
 561         if (argc > 2) {
 562                 fdout = open(argv[2],
 563                              O_CREAT | O_TRUNC | O_WRONLY | O_LARGEFILE,
 564                              0600);
 565                 if (fdout == -1) {
 566                         fprintf(stderr, "open(%s) failed: %s\n", argv[2],
 567                                 strerror(errno));
 568                         fclose(in);
 569                         return 1;
 570                 }
 571                 out = fdopen(fdout, "w");
 572                 if (out == NULL) {
 573                         fprintf(stderr, "fopen(%s) failed: %s\n", argv[2],
 574                                 strerror(errno));
 575                         fclose(in);
 576                         close(fdout);
 577                         return 1;
 578                 }
 579         }
 580
 581         rc = parse_buffer(in, out);
 582
 583         fclose(in);
 584         if (out != stdout)
 585                 fclose(out);
 586
 587         return rc;
 588 }
 589
 590 const char debug_daemon_usage[] = "usage: %s {start file [MB]|stop}\n";
 591
 592 int jt_dbg_debug_daemon(int argc, char **argv)
 593 {
 594         int  rc;
 595         int  fd;
 596
 597         if (argc <= 1) {
 598                 fprintf(stderr, debug_daemon_usage, argv[0]);
 599                 return 1;
 600         }
 601
 602         fd = dbg_open_ctlhandle(DAEMON_CTL_NAME);
 603         if (fd < 0)
 604                 return -1;
 605
 606         rc = -1;
 607         if (strcasecmp(argv[1], "start") == 0) {
 608              if (argc < 3 || argc > 4 ||
 609                     (argc == 4 && strlen(argv[3]) > 5)) {
 610                         fprintf(stderr, debug_daemon_usage, argv[0]);
 611                         goto out;
 612                 }
 613                 if (argc == 4) {
 614                         char       buf[12];
 615                         const long min_size = 10;
 616                         const long max_size = 20480;
 617                         long       size;
 618                         char      *end;
 619
 620                         size = strtoul(argv[3], &end, 0);
 621                         if (size < min_size ||
 622                             size > max_size ||
 623                             *end != 0) {
 624                                 fprintf(stderr, "size %s invalid, must be in "
 625                                         "the range %ld-%ld MB\n", argv[3],
 626                                         min_size, max_size);
 627                                 goto out;
 628                         }
 629                         snprintf(buf, sizeof(buf), "size=%ld", size);
 630                         rc = dbg_write_cmd(fd, buf, strlen(buf));
 631
 632                         if (rc != 0) {
 633                                 fprintf(stderr, "set %s failed: %s\n",
 634                                         buf, strerror(errno));
 635                                 goto out;
 636                         }
 637                 }
 638
 639                 rc = dbg_write_cmd(fd, argv[2], strlen(argv[2]));
 640                 if (rc != 0) {
 641                         fprintf(stderr, "start debug_daemon on %s failed: %s\n",
 642                                 argv[2], strerror(errno));
 643                         goto out;
 644                 }
 645                 rc = 0;
 646                 goto out;
 647         }
 648         if (strcasecmp(argv[1], "stop") == 0) {
 649                 rc = dbg_write_cmd(fd, "stop", 4);
 650                 if (rc != 0) {
 651                         fprintf(stderr, "stopping debug_daemon failed: %s\n",
 652                                 strerror(errno));
 653                         goto out;
 654                 }
 655
 656                 rc = 0;
 657                 goto out;
 658         }
 659
 660         fprintf(stderr, debug_daemon_usage, argv[0]);
 661         rc = -1;
 662 out:
 663         dbg_close_ctlhandle(fd);
 664         return rc;
 665 }
 666
 667 int jt_dbg_clear_debug_buf(int argc, char **argv)
 668 {
 669         int rc;
 670         struct libcfs_ioctl_data data;
 671
 672         if (argc != 1) {
 673                 fprintf(stderr, "usage: %s\n", argv[0]);
 674                 return 0;
 675         }
 676
 677         memset(&data, 0, sizeof(data));
 678         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 679                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 680                 return -1;
 681         }
 682
 683         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_CLEAR_DEBUG, buf);
 684         if (rc) {
 685                 fprintf(stderr, "IOC_LIBCFS_CLEAR_DEBUG failed: %s\n",
 686                         strerror(errno));
 687                 return -1;
 688         }
 689         return 0;
 690 }
 691
 692 int jt_dbg_mark_debug_buf(int argc, char **argv)
 693 {
 694         static char scratch[MAX_MARK_SIZE] = { '\0' };
 695         int rc, max_size = MAX_MARK_SIZE-1;
 696         struct libcfs_ioctl_data data = { 0 };
 697         char *text;
 698         time_t now = time(NULL);
 699
 700         if (argc > 1) {
 701                 int count;
 702                 text = scratch;
 703                 strncpy(text, argv[1], max_size);
 704                 max_size-=strlen(argv[1]);
 705                 for (count = 2; (count < argc) && (max_size > 0); count++){
 706                         strncat(text, " ", max_size);
 707                         max_size -= 1;
 708                         strncat(text, argv[count], max_size);
 709                         max_size -= strlen(argv[count]);
 710                 }
 711         } else {
 712                 text = ctime(&now);
 713         }
 714
 715         data.ioc_inllen1 = strlen(text) + 1;
 716         data.ioc_inlbuf1 = text;
 717         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 718                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 719                 return -1;
 720         }
 721
 722         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_MARK_DEBUG, buf);
 723         if (rc) {
 724                 fprintf(stderr, "IOC_LIBCFS_MARK_DEBUG failed: %s\n",
 725                         strerror(errno));
 726                 return -1;
 727         }
 728         return 0;
 729 }
 730
 731 static struct mod_paths {
 732         char *name, *path;
 733 } mod_paths[] = {
 734         {"libcfs", "lnet/libcfs"},
 735         {"lnet", "lnet/lnet"},
 736         {"kciblnd", "lnet/klnds/ciblnd"},
 737         {"kgmlnd", "lnet/klnds/gmlnd"},
 738         {"kmxlnd", "lnet/klnds/mxlnd"},
 739         {"kiiblnd", "lnet/klnds/iiblnd"},
 740         {"ko2iblnd", "lnet/klnds/o2iblnd"},
 741         {"kopeniblnd", "lnet/klnds/openiblnd"},
 742         {"kptllnd", "lnet/klnds/ptllnd"},
 743         {"kqswlnd", "lnet/klnds/qswlnd"},
 744         {"kralnd", "lnet/klnds/ralnd"},
 745         {"ksocklnd", "lnet/klnds/socklnd"},
 746         {"ktdilnd", "lnet/klnds/tdilnd"},
 747         {"kviblnd", "lnet/klnds/viblnd"},
 748         {"lvfs", "lustre/lvfs"},
 749         {"obdclass", "lustre/obdclass"},
 750         {"llog_test", "lustre/obdclass"},
 751         {"ptlrpc_gss", "lustre/ptlrpc/gss"},
 752         {"ptlrpc", "lustre/ptlrpc"},
 753         {"gks", "lustre/sec/gks"},
 754         {"gkc", "lustre/sec/gks"},
 755         {"ost", "lustre/ost"},
 756         {"osc", "lustre/osc"},
 757         {"mds", "lustre/mds"},
 758         {"mdc", "lustre/mdc"},
 759         {"llite", "lustre/llite"},
 760         {"lustre", "lustre/llite"},
 761         {"ldiskfs", "lustre/ldiskfs"},
 762         {"smfs", "lustre/smfs"},
 763         {"obdecho", "lustre/obdecho"},
 764         {"ldlm", "lustre/ldlm"},
 765         {"obdfilter", "lustre/obdfilter"},
 766         {"lov", "lustre/lov"},
 767         {"lmv", "lustre/lmv"},
 768         {"fsfilt_ext3", "lustre/lvfs"},
 769         {"fsfilt_reiserfs", "lustre/lvfs"},
 770         {"fsfilt_smfs", "lustre/lvfs"},
 771         {"fsfilt_ldiskfs", "lustre/lvfs"},
 772         {"mds_ext3", "lustre/mds"},
 773         {"cobd", "lustre/cobd"},
 774         {"cmobd", "lustre/cmobd"},
 775         {"lquota", "lustre/quota"},
 776         {"mgs", "lustre/mgs"},
 777         {"mgc", "lustre/mgc"},
 778         {"mdt", "lustre/mdt"},
 779         {"mdd", "lustre/mdd"},
 780         {"osd", "lustre/osd"},
 781         {"cmm", "lustre/cmm"},
 782         {"fid", "lustre/fid"},
 783         {"fld", "lustre/fld"},
 784         {NULL, NULL}
 785 };
 786
 787 static int jt_dbg_modules_2_4(int argc, char **argv)
 788 {
 789 #ifdef HAVE_LINUX_VERSION_H
 790 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
 791         struct mod_paths *mp;
 792         char *path = "";
 793         char *kernel = "linux";
 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         for (mp = mod_paths; mp->name != NULL; mp++) {
 805                 struct module_info info;
 806                 int rc;
 807                 size_t crap;
 808                 int query_module(const char *name, int which, void *buf,
 809                                  size_t bufsize, size_t *ret);
 810
 811                 rc = query_module(mp->name, QM_INFO, &info, sizeof(info),
 812                                   &crap);
 813                 if (rc < 0) {
 814                         if (errno != ENOENT)
 815                                 printf("query_module(%s) failed: %s\n",
 816                                        mp->name, strerror(errno));
 817                 } else {
 818                         printf("add-symbol-file %s%s%s/%s.o 0x%0lx\n", path,
 819                                path[0] ? "/" : "", mp->path, mp->name,
 820                                info.addr + sizeof(struct module));
 821                 }
 822         }
 823
 824         return 0;
 825 #endif // Headers are 2.6-only
 826 #endif // !HAVE_LINUX_VERSION_H
 827         return -EINVAL;
 828 }
 829
 830 static int jt_dbg_modules_2_5(int argc, char **argv)
 831 {
 832         struct mod_paths *mp;
 833         char *path = "";
 834         char *kernel = "linux";
 835         const char *proc = "/proc/modules";
 836         char modname[128], others[4096];
 837         long modaddr;
 838         int rc;
 839         FILE *file;
 840
 841         if (argc >= 2)
 842                 path = argv[1];
 843         if (argc == 3)
 844                 kernel = argv[2];
 845         if (argc > 3) {
 846                 printf("%s [path] [kernel]\n", argv[0]);
 847                 return 0;
 848         }
 849
 850         file = fopen(proc, "r");
 851         if (!file) {
 852                 printf("failed open %s: %s\n", proc, strerror(errno));
 853                 return 0;
 854         }
 855
 856         while ((rc = fscanf(file, "%s %s %s %s %s %lx\n",
 857                 modname, others, others, others, others, &modaddr)) == 6) {
 858                 for (mp = mod_paths; mp->name != NULL; mp++) {
 859                         if (!strcmp(mp->name, modname))
 860                                 break;
 861                 }
 862                 if (mp->name) {
 863                         printf("add-symbol-file %s%s%s/%s.o 0x%0lx\n", path,
 864                                path[0] ? "/" : "", mp->path, mp->name, modaddr);
 865                 }
 866         }
 867
 868         fclose(file);
 869         return 0;
 870 }
 871
 872 int jt_dbg_modules(int argc, char **argv)
 873 {
 874         int rc = 0;
 875         struct utsname sysinfo;
 876
 877         rc = uname(&sysinfo);
 878         if (rc) {
 879                 printf("uname() failed: %s\n", strerror(errno));
 880                 return 0;
 881         }
 882
 883         if (sysinfo.release[2] > '4') {
 884                 return jt_dbg_modules_2_5(argc, argv);
 885         } else {
 886                 return jt_dbg_modules_2_4(argc, argv);
 887         }
 888
 889         return 0;
 890 }
 891
 892 int jt_dbg_panic(int argc, char **argv)
 893 {
 894         int rc;
 895         struct libcfs_ioctl_data data;
 896
 897         if (argc != 1) {
 898                 fprintf(stderr, "usage: %s\n", argv[0]);
 899                 return 0;
 900         }
 901
 902         memset(&data, 0, sizeof(data));
 903         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 904                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 905                 return -1;
 906         }
 907
 908         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_PANIC, buf);
 909         if (rc) {
 910                 fprintf(stderr, "IOC_LIBCFS_PANIC failed: %s\n",
 911                         strerror(errno));
 912                 return -1;
 913         }
 914         return 0;
 915 }