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/stat.h>
  49 #include <sys/mman.h>
  50 #include <sys/utsname.h>
  51
  52 #include <lnet/api-support.h>
  53 #include <lnet/lnetctl.h>
  54 #include <libcfs/portals_utils.h>
  55 #include "parser.h"
  56
  57 #include <time.h>
  58
  59 static char rawbuf[8192];
  60 static char *buf = rawbuf;
  61 static int max = 8192;
  62 /*static int g_pfd = -1;*/
  63 static int subsystem_mask = ~0;
  64 static int debug_mask = ~0;
  65
  66 #define MAX_MARK_SIZE 256
  67
  68 static const char *libcfs_debug_subsystems[] =
  69         {"undefined", "mdc", "mds", "osc",
  70          "ost", "class", "log", "llite",
  71          "rpc", "mgmt", "lnet", "lnd",
  72          "pinger", "filter", "", "echo",
  73          "ldlm", "lov", "", "",
  74          "", "", "", "lmv",
  75          "", "sec", "gss", "",
  76          "mgc", "mgs", "fid", "fld", NULL};
  77 static const char *libcfs_debug_masks[] =
  78         {"trace", "inode", "super", "ext2",
  79          "malloc", "cache", "info", "ioctl",
  80          "neterror", "net", "warning", "buffs",
  81          "other", "dentry", "nettrace", "page",
  82          "dlmtrace", "error", "emerg", "ha",
  83          "rpctrace", "vfstrace", "reada", "mmap",
  84          "config", "console", "quota", "sec", NULL};
  85
  86 struct debug_daemon_cmd {
  87         char *cmd;
  88         unsigned int cmdv;
  89 };
  90
  91 static const struct debug_daemon_cmd libcfs_debug_daemon_cmd[] = {
  92         {"start", DEBUG_DAEMON_START},
  93         {"stop", DEBUG_DAEMON_STOP},
  94         {0, 0}
  95 };
  96
  97 #ifdef __linux__
  98
  99 #define DAEMON_CTL_NAME         "/proc/sys/lnet/daemon_file"
 100 #define SUBSYS_DEBUG_CTL_NAME   "/proc/sys/lnet/subsystem_debug"
 101 #define DEBUG_CTL_NAME          "/proc/sys/lnet/debug"
 102 #define DUMP_KERNEL_CTL_NAME    "/proc/sys/lnet/dump_kernel"
 103
 104 static int
 105 dbg_open_ctlhandle(const char *str)
 106 {
 107         int fd;
 108         fd = open(str, O_WRONLY);
 109         if (fd < 0) {
 110                 fprintf(stderr, "open %s failed: %s\n", str,
 111                         strerror(errno));
 112                 return -1;
 113         }
 114         return fd;
 115 }
 116
 117 static void
 118 dbg_close_ctlhandle(int fd)
 119 {
 120         close(fd);
 121 }
 122
 123 static int
 124 dbg_write_cmd(int fd, char *str, int len)
 125 {
 126         int    rc  = write(fd, str, len);
 127
 128         return (rc == len ? 0 : 1);
 129 }
 130
 131 #elif defined(__DARWIN__)
 132
 133 #define DAEMON_CTL_NAME         "lnet.trace_daemon"
 134 #define SUBSYS_DEBUG_CTL_NAME   "lnet.subsystem_debug"
 135 #define DEBUG_CTL_NAME          "lnet.debug"
 136 #define DUMP_KERNEL_CTL_NAME    "lnet.trace_dumpkernel"
 137
 138 static char     sysctl_name[128];
 139 static int
 140 dbg_open_ctlhandle(const char *str)
 141 {
 142
 143         if (strlen(str)+1 > 128) {
 144                 fprintf(stderr, "sysctl name is too long: %s.\n", str);
 145                 return -1;
 146         }
 147         strcpy(sysctl_name, str);
 148
 149         return 0;
 150 }
 151
 152 static void
 153 dbg_close_ctlhandle(int fd)
 154 {
 155         sysctl_name[0] = '\0';
 156         return;
 157 }
 158
 159 static int
 160 dbg_write_cmd(int fd, char *str, int len)
 161 {
 162         int     rc;
 163
 164         rc = sysctlbyname(sysctl_name, NULL, NULL, str, len+1);
 165         if (rc != 0) {
 166                 fprintf(stderr, "sysctl %s with cmd (%s) error: %d\n",
 167                         sysctl_name, str, errno);
 168         }
 169         return (rc == 0 ? 0: 1);
 170 }
 171
 172 #else
 173 #error - Unknown sysctl convention.
 174 #endif
 175
 176 static int do_debug_mask(char *name, int enable)
 177 {
 178         int found = 0, i;
 179
 180         for (i = 0; libcfs_debug_subsystems[i] != NULL; i++) {
 181                 if (strcasecmp(name, libcfs_debug_subsystems[i]) == 0 ||
 182                     strcasecmp(name, "all_subs") == 0) {
 183                         printf("%s output from subsystem \"%s\"\n",
 184                                 enable ? "Enabling" : "Disabling",
 185                                 libcfs_debug_subsystems[i]);
 186                         if (enable)
 187                                 subsystem_mask |= (1 << i);
 188                         else
 189                                 subsystem_mask &= ~(1 << i);
 190                         found = 1;
 191                 }
 192         }
 193         for (i = 0; libcfs_debug_masks[i] != NULL; i++) {
 194                 if (strcasecmp(name, libcfs_debug_masks[i]) == 0 ||
 195                     strcasecmp(name, "all_types") == 0) {
 196                         printf("%s output of type \"%s\"\n",
 197                                 enable ? "Enabling" : "Disabling",
 198                                 libcfs_debug_masks[i]);
 199                         if (enable)
 200                                 debug_mask |= (1 << i);
 201                         else
 202                                 debug_mask &= ~(1 << i);
 203                         found = 1;
 204                 }
 205         }
 206
 207         return found;
 208 }
 209
 210 int dbg_initialize(int argc, char **argv)
 211 {
 212         return 0;
 213 }
 214
 215 int jt_dbg_filter(int argc, char **argv)
 216 {
 217         int   i;
 218
 219         if (argc < 2) {
 220                 fprintf(stderr, "usage: %s <subsystem ID or debug mask>\n",
 221                         argv[0]);
 222                 return 0;
 223         }
 224
 225         for (i = 1; i < argc; i++)
 226                 if (!do_debug_mask(argv[i], 0))
 227                         fprintf(stderr, "Unknown subsystem or debug type: %s\n",
 228                                 argv[i]);
 229         return 0;
 230 }
 231
 232 int jt_dbg_show(int argc, char **argv)
 233 {
 234         int    i;
 235
 236         if (argc < 2) {
 237                 fprintf(stderr, "usage: %s <subsystem ID or debug mask>\n",
 238                         argv[0]);
 239                 return 0;
 240         }
 241
 242         for (i = 1; i < argc; i++)
 243                 if (!do_debug_mask(argv[i], 1))
 244                         fprintf(stderr, "Unknown subsystem or debug type: %s\n",
 245                                 argv[i]);
 246
 247         return 0;
 248 }
 249
 250 static int applymask(char* procpath, int value)
 251 {
 252         int rc;
 253         char buf[64];
 254         int len = snprintf(buf, 64, "%d", value);
 255
 256         int fd = dbg_open_ctlhandle(procpath);
 257         if (fd == -1) {
 258                 fprintf(stderr, "Unable to open %s: %s\n",
 259                         procpath, strerror(errno));
 260                 return fd;
 261         }
 262         rc = dbg_write_cmd(fd, buf, len+1);
 263         if (rc != 0) {
 264                 fprintf(stderr, "Write to %s failed: %s\n",
 265                         procpath, strerror(errno));
 266                 return rc;
 267         }
 268         dbg_close_ctlhandle(fd);
 269         return 0;
 270 }
 271
 272 static void applymask_all(unsigned int subs_mask, unsigned int debug_mask)
 273 {
 274         if (!dump_filename) {
 275                 applymask(SUBSYS_DEBUG_CTL_NAME, subs_mask);
 276                 applymask(DEBUG_CTL_NAME, debug_mask);
 277         } else {
 278                 struct libcfs_debug_ioctl_data data;
 279
 280                 data.hdr.ioc_len = sizeof(data);
 281                 data.hdr.ioc_version = 0;
 282                 data.subs = subs_mask;
 283                 data.debug = debug_mask;
 284
 285                 dump(OBD_DEV_ID, LIBCFS_IOC_DEBUG_MASK, &data);
 286         }
 287         printf("Applied subsystem_debug=%d, debug=%d to /proc/sys/lnet\n",
 288                subs_mask, debug_mask);
 289 }
 290
 291 int jt_dbg_list(int argc, char **argv)
 292 {
 293         int i;
 294
 295         if (argc != 2) {
 296                 fprintf(stderr, "usage: %s <subs || types>\n", argv[0]);
 297                 return 0;
 298         }
 299
 300         if (strcasecmp(argv[1], "subs") == 0) {
 301                 printf("Subsystems: all_subs");
 302                 for (i = 0; libcfs_debug_subsystems[i] != NULL; i++)
 303                         if (libcfs_debug_subsystems[i][0])
 304                                 printf(", %s", libcfs_debug_subsystems[i]);
 305                 printf("\n");
 306         } else if (strcasecmp(argv[1], "types") == 0) {
 307                 printf("Types: all_types");
 308                 for (i = 0; libcfs_debug_masks[i] != NULL; i++)
 309                         printf(", %s", libcfs_debug_masks[i]);
 310                 printf("\n");
 311         } else if (strcasecmp(argv[1], "applymasks") == 0) {
 312                 applymask_all(subsystem_mask, debug_mask);
 313         }
 314         return 0;
 315 }
 316
 317 /* all strings nul-terminated; only the struct and hdr need to be freed */
 318 struct dbg_line {
 319         struct ptldebug_header *hdr;
 320         char *file;
 321         char *fn;
 322         char *text;
 323 };
 324
 325 static int cmp_rec(const void *p1, const void *p2)
 326 {
 327         struct dbg_line *d1 = *(struct dbg_line **)p1;
 328         struct dbg_line *d2 = *(struct dbg_line **)p2;
 329
 330         if (d1->hdr->ph_sec < d2->hdr->ph_sec)
 331                 return -1;
 332         if (d1->hdr->ph_sec == d2->hdr->ph_sec &&
 333             d1->hdr->ph_usec < d2->hdr->ph_usec)
 334                 return -1;
 335         if (d1->hdr->ph_sec == d2->hdr->ph_sec &&
 336             d1->hdr->ph_usec == d2->hdr->ph_usec)
 337                 return 0;
 338         return 1;
 339 }
 340
 341 static void print_rec(struct dbg_line **linev, int used, FILE *out)
 342 {
 343         int i;
 344
 345         for (i = 0; i < used; i++) {
 346                 struct dbg_line *line = linev[i];
 347                 struct ptldebug_header *hdr = line->hdr;
 348
 349                 fprintf(out, "%08x:%08x:%u:%u.%06llu:%u:%u:%u:(%s:%u:%s()) %s",
 350                         hdr->ph_subsys, hdr->ph_mask, hdr->ph_cpu_id,
 351                         hdr->ph_sec, (unsigned long long)hdr->ph_usec,
 352                         hdr->ph_stack, hdr->ph_pid, hdr->ph_extern_pid,
 353                         line->file, hdr->ph_line_num, line->fn, line->text);
 354                 free(line->hdr);
 355                 free(line);
 356         }
 357         free(linev);
 358 }
 359
 360 static int add_rec(struct dbg_line *line, struct dbg_line ***linevp, int *lenp,
 361                    int used)
 362 {
 363         struct dbg_line **linev = *linevp;
 364
 365         if (used == *lenp) {
 366                 int nlen = *lenp + 512;
 367                 int nsize = nlen * sizeof(struct dbg_line *);
 368
 369                 linev = *linevp ? realloc(*linevp, nsize) : malloc(nsize);
 370                 if (!linev)
 371                         return 0;
 372                 *linevp = linev;
 373                 *lenp = nlen;
 374         }
 375         linev[used] = line;
 376         return 1;
 377 }
 378
 379 static int parse_buffer(FILE *in, FILE *out)
 380 {
 381         struct dbg_line *line;
 382         struct ptldebug_header *hdr;
 383         char buf[4097], *p;
 384         int rc;
 385         unsigned long dropped = 0, kept = 0;
 386         struct dbg_line **linev = NULL;
 387         int linev_len = 0;
 388
 389         while (1) {
 390                 rc = fread(buf, sizeof(hdr->ph_len) + sizeof(hdr->ph_flags), 1, in);
 391                 if (rc <= 0)
 392                         break;
 393
 394                 hdr = (void *)buf;
 395                 if (hdr->ph_len == 0)
 396                         break;
 397                 if (hdr->ph_len > 4094) {
 398                         fprintf(stderr, "unexpected large record: %d bytes.  "
 399                                 "aborting.\n",
 400                                 hdr->ph_len);
 401                         break;
 402                 }
 403
 404                 rc = fread(buf + sizeof(hdr->ph_len) + sizeof(hdr->ph_flags), 1,
 405                            hdr->ph_len - sizeof(hdr->ph_len) - sizeof(hdr->ph_flags), in);
 406                 if (rc <= 0)
 407                         break;
 408
 409                 if ((hdr->ph_subsys && !(subsystem_mask & hdr->ph_subsys)) ||
 410                     (hdr->ph_mask   && !(debug_mask & hdr->ph_mask))) {
 411                         dropped++;
 412                         continue;
 413                 }
 414
 415                 line = malloc(sizeof(*line));
 416                 if (line == NULL) {
 417                         fprintf(stderr, "malloc failed; printing accumulated "
 418                                 "records and exiting.\n");
 419                         break;
 420                 }
 421
 422                 line->hdr = malloc(hdr->ph_len + 1);
 423                 if (line->hdr == NULL) {
 424                         free(line);
 425                         fprintf(stderr, "malloc failed; printing accumulated "
 426                                 "records and exiting.\n");
 427                         break;
 428                 }
 429
 430                 p = (void *)line->hdr;
 431                 memcpy(line->hdr, buf, hdr->ph_len);
 432                 p[hdr->ph_len] = '\0';
 433
 434                 p += sizeof(*hdr);
 435                 line->file = p;
 436                 p += strlen(line->file) + 1;
 437                 line->fn = p;
 438                 p += strlen(line->fn) + 1;
 439                 line->text = p;
 440
 441                 if (!add_rec(line, &linev, &linev_len, kept)) {
 442                         fprintf(stderr, "malloc failed; printing accumulated "
 443                                 "records and exiting.\n");
 444                         break;
 445                 }
 446                 kept++;
 447         }
 448
 449         if (linev) {
 450                 qsort(linev, kept, sizeof(struct dbg_line *), cmp_rec);
 451                 print_rec(linev, kept, out);
 452         }
 453
 454         printf("Debug log: %lu lines, %lu kept, %lu dropped.\n",
 455                 dropped + kept, kept, dropped);
 456         return 0;
 457 }
 458
 459 int jt_dbg_debug_kernel(int argc, char **argv)
 460 {
 461         char filename[4096];
 462         struct stat st;
 463         int rc, raw = 0, fd;
 464         FILE *in, *out = stdout;
 465
 466         if (argc > 3) {
 467                 fprintf(stderr, "usage: %s [file] [raw]\n", argv[0]);
 468                 return 0;
 469         }
 470
 471         if (argc > 2) {
 472                 raw = atoi(argv[2]);
 473         } else if (argc > 1 && (argv[1][0] == '0' || argv[1][0] == '1')) {
 474                 raw = atoi(argv[1]);
 475                 argc--;
 476         }
 477
 478         /* If we are dumping raw (which means no conversion step to ASCII)
 479          * then dump directly to any supplied filename, otherwise this is
 480          * just a temp file and we dump to the real file at convert time. */
 481         if (argc > 1 && raw)
 482                 strcpy(filename, argv[1]);
 483         else
 484                 sprintf(filename, "/tmp/lustre-log."CFS_TIME_T".%u",
 485                         time(NULL),getpid());
 486
 487         if (stat(filename, &st) == 0 && S_ISREG(st.st_mode))
 488                 unlink(filename);
 489
 490         fd = dbg_open_ctlhandle(DUMP_KERNEL_CTL_NAME);
 491         if (fd < 0) {
 492                 fprintf(stderr, "open(dump_kernel) failed: %s\n",
 493                         strerror(errno));
 494                 return 1;
 495         }
 496
 497         rc = dbg_write_cmd(fd, filename, strlen(filename));
 498         if (rc != 0) {
 499                 fprintf(stderr, "write(%s) failed: %s\n", filename,
 500                         strerror(errno));
 501                 close(fd);
 502                 return 1;
 503         }
 504         dbg_close_ctlhandle(fd);
 505
 506         if (raw)
 507                 return 0;
 508
 509         in = fopen(filename, "r");
 510         if (in == NULL) {
 511                 if (errno == ENOENT) /* no dump file created */
 512                         return 0;
 513
 514                 fprintf(stderr, "fopen(%s) failed: %s\n", filename,
 515                         strerror(errno));
 516                 return 1;
 517         }
 518         if (argc > 1) {
 519                 out = fopen(argv[1], "w");
 520                 if (out == NULL) {
 521                         fprintf(stderr, "fopen(%s) failed: %s\n", argv[1],
 522                                 strerror(errno));
 523                         fclose(in);
 524                         return 1;
 525                 }
 526         }
 527
 528         rc = parse_buffer(in, out);
 529         fclose(in);
 530         if (argc > 1)
 531                 fclose(out);
 532         if (rc) {
 533                 fprintf(stderr, "parse_buffer failed; leaving tmp file %s "
 534                         "behind.\n", filename);
 535         } else {
 536                 rc = unlink(filename);
 537                 if (rc)
 538                         fprintf(stderr, "dumped successfully, but couldn't "
 539                                 "unlink tmp file %s: %s\n", filename,
 540                                 strerror(errno));
 541         }
 542         return rc;
 543 }
 544
 545 int jt_dbg_debug_file(int argc, char **argv)
 546 {
 547         int    fdin;
 548         int    fdout;
 549         FILE  *in;
 550         FILE  *out = stdout;
 551         int    rc;
 552
 553         if (argc > 3 || argc < 2) {
 554                 fprintf(stderr, "usage: %s <input> [output]\n", argv[0]);
 555                 return 0;
 556         }
 557
 558         fdin = open(argv[1], O_RDONLY | O_LARGEFILE);
 559         if (fdin == -1) {
 560                 fprintf(stderr, "open(%s) failed: %s\n", argv[1],
 561                         strerror(errno));
 562                 return 1;
 563         }
 564         in = fdopen(fdin, "r");
 565         if (in == NULL) {
 566                 fprintf(stderr, "fopen(%s) failed: %s\n", argv[1],
 567                         strerror(errno));
 568                 close(fdin);
 569                 return 1;
 570         }
 571         if (argc > 2) {
 572                 fdout = open(argv[2],
 573                              O_CREAT | O_TRUNC | O_WRONLY | O_LARGEFILE,
 574                              0600);
 575                 if (fdout == -1) {
 576                         fprintf(stderr, "open(%s) failed: %s\n", argv[2],
 577                                 strerror(errno));
 578                         fclose(in);
 579                         return 1;
 580                 }
 581                 out = fdopen(fdout, "w");
 582                 if (out == NULL) {
 583                         fprintf(stderr, "fopen(%s) failed: %s\n", argv[2],
 584                                 strerror(errno));
 585                         fclose(in);
 586                         close(fdout);
 587                         return 1;
 588                 }
 589         }
 590
 591         rc = parse_buffer(in, out);
 592
 593         fclose(in);
 594         if (out != stdout)
 595                 fclose(out);
 596
 597         return rc;
 598 }
 599
 600 const char debug_daemon_usage[] = "usage: %s {start file [MB]|stop}\n";
 601
 602 int jt_dbg_debug_daemon(int argc, char **argv)
 603 {
 604         int  rc;
 605         int  fd;
 606
 607         if (argc <= 1) {
 608                 fprintf(stderr, debug_daemon_usage, argv[0]);
 609                 return 1;
 610         }
 611
 612         fd = dbg_open_ctlhandle(DAEMON_CTL_NAME);
 613         if (fd < 0)
 614                 return -1;
 615
 616         rc = -1;
 617         if (strcasecmp(argv[1], "start") == 0) {
 618              if (argc < 3 || argc > 4 ||
 619                     (argc == 4 && strlen(argv[3]) > 5)) {
 620                         fprintf(stderr, debug_daemon_usage, argv[0]);
 621                         goto out;
 622                 }
 623                 if (argc == 4) {
 624                         char       buf[12];
 625                         const long min_size = 10;
 626                         const long max_size = 20480;
 627                         long       size;
 628                         char      *end;
 629
 630                         size = strtoul(argv[3], &end, 0);
 631                         if (size < min_size ||
 632                             size > max_size ||
 633                             *end != 0) {
 634                                 fprintf(stderr, "size %s invalid, must be in "
 635                                         "the range %ld-%ld MB\n", argv[3],
 636                                         min_size, max_size);
 637                                 goto out;
 638                         }
 639                         snprintf(buf, sizeof(buf), "size=%ld", size);
 640                         rc = dbg_write_cmd(fd, buf, strlen(buf));
 641
 642                         if (rc != 0) {
 643                                 fprintf(stderr, "set %s failed: %s\n",
 644                                         buf, strerror(errno));
 645                                 goto out;
 646                         }
 647                 }
 648
 649                 rc = dbg_write_cmd(fd, argv[2], strlen(argv[2]));
 650                 if (rc != 0) {
 651                         fprintf(stderr, "start debug_daemon on %s failed: %s\n",
 652                                 argv[2], strerror(errno));
 653                         goto out;
 654                 }
 655                 rc = 0;
 656                 goto out;
 657         }
 658         if (strcasecmp(argv[1], "stop") == 0) {
 659                 rc = dbg_write_cmd(fd, "stop", 4);
 660                 if (rc != 0) {
 661                         fprintf(stderr, "stopping debug_daemon failed: %s\n",
 662                                 strerror(errno));
 663                         goto out;
 664                 }
 665
 666                 rc = 0;
 667                 goto out;
 668         }
 669
 670         fprintf(stderr, debug_daemon_usage, argv[0]);
 671         rc = -1;
 672 out:
 673         dbg_close_ctlhandle(fd);
 674         return rc;
 675 }
 676
 677 int jt_dbg_clear_debug_buf(int argc, char **argv)
 678 {
 679         int rc;
 680         struct libcfs_ioctl_data data;
 681
 682         if (argc != 1) {
 683                 fprintf(stderr, "usage: %s\n", argv[0]);
 684                 return 0;
 685         }
 686
 687         memset(&data, 0, sizeof(data));
 688         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 689                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 690                 return -1;
 691         }
 692
 693         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_CLEAR_DEBUG, buf);
 694         if (rc) {
 695                 fprintf(stderr, "IOC_LIBCFS_CLEAR_DEBUG failed: %s\n",
 696                         strerror(errno));
 697                 return -1;
 698         }
 699         return 0;
 700 }
 701
 702 int jt_dbg_mark_debug_buf(int argc, char **argv)
 703 {
 704         static char scratch[MAX_MARK_SIZE] = { '\0' };
 705         int rc, max_size = MAX_MARK_SIZE-1;
 706         struct libcfs_ioctl_data data = { 0 };
 707         char *text;
 708         time_t now = time(NULL);
 709
 710         if (argc > 1) {
 711                 int count;
 712                 text = scratch;
 713                 strncpy(text, argv[1], max_size);
 714                 max_size-=strlen(argv[1]);
 715                 for (count = 2; (count < argc) && (max_size > 0); count++){
 716                         strncat(text, " ", max_size);
 717                         max_size -= 1;
 718                         strncat(text, argv[count], max_size);
 719                         max_size -= strlen(argv[count]);
 720                 }
 721         } else {
 722                 text = ctime(&now);
 723         }
 724
 725         data.ioc_inllen1 = strlen(text) + 1;
 726         data.ioc_inlbuf1 = text;
 727         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 728                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 729                 return -1;
 730         }
 731
 732         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_MARK_DEBUG, buf);
 733         if (rc) {
 734                 fprintf(stderr, "IOC_LIBCFS_MARK_DEBUG failed: %s\n",
 735                         strerror(errno));
 736                 return -1;
 737         }
 738         return 0;
 739 }
 740
 741 static struct mod_paths {
 742         char *name, *path;
 743 } mod_paths[] = {
 744         {"libcfs", "libcfs/libcfs"},
 745         {"lnet", "lnet/lnet"},
 746         {"kciblnd", "lnet/klnds/ciblnd"},
 747         {"kgmlnd", "lnet/klnds/gmlnd"},
 748         {"kmxlnd", "lnet/klnds/mxlnd"},
 749         {"kiiblnd", "lnet/klnds/iiblnd"},
 750         {"ko2iblnd", "lnet/klnds/o2iblnd"},
 751         {"kopeniblnd", "lnet/klnds/openiblnd"},
 752         {"kptllnd", "lnet/klnds/ptllnd"},
 753         {"kqswlnd", "lnet/klnds/qswlnd"},
 754         {"kralnd", "lnet/klnds/ralnd"},
 755         {"ksocklnd", "lnet/klnds/socklnd"},
 756         {"ktdilnd", "lnet/klnds/tdilnd"},
 757         {"kviblnd", "lnet/klnds/viblnd"},
 758         {"lvfs", "lustre/lvfs"},
 759         {"obdclass", "lustre/obdclass"},
 760         {"llog_test", "lustre/obdclass"},
 761         {"ptlrpc_gss", "lustre/ptlrpc/gss"},
 762         {"ptlrpc", "lustre/ptlrpc"},
 763         {"gks", "lustre/sec/gks"},
 764         {"gkc", "lustre/sec/gks"},
 765         {"ost", "lustre/ost"},
 766         {"osc", "lustre/osc"},
 767         {"mds", "lustre/mds"},
 768         {"mdc", "lustre/mdc"},
 769         {"llite", "lustre/llite"},
 770         {"lustre", "lustre/llite"},
 771         {"llite_lloop", "lustre/llite"},
 772         {"ldiskfs", "ldiskfs/ldiskfs"},
 773         {"smfs", "lustre/smfs"},
 774         {"obdecho", "lustre/obdecho"},
 775         {"ldlm", "lustre/ldlm"},
 776         {"obdfilter", "lustre/obdfilter"},
 777         {"lov", "lustre/lov"},
 778         {"lmv", "lustre/lmv"},
 779         {"fsfilt_ext3", "lustre/lvfs"},
 780         {"fsfilt_reiserfs", "lustre/lvfs"},
 781         {"fsfilt_smfs", "lustre/lvfs"},
 782         {"fsfilt_ldiskfs", "lustre/lvfs"},
 783         {"mds_ext3", "lustre/mds"},
 784         {"cobd", "lustre/cobd"},
 785         {"cmobd", "lustre/cmobd"},
 786         {"lquota", "lustre/quota"},
 787         {"mgs", "lustre/mgs"},
 788         {"mgc", "lustre/mgc"},
 789         {"mdt", "lustre/mdt"},
 790         {"mdd", "lustre/mdd"},
 791         {"osd", "lustre/osd"},
 792         {"cmm", "lustre/cmm"},
 793         {"fid", "lustre/fid"},
 794         {"fld", "lustre/fld"},
 795         {NULL, NULL}
 796 };
 797
 798 static int jt_dbg_modules_2_4(int argc, char **argv)
 799 {
 800 #ifdef HAVE_LINUX_VERSION_H
 801 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
 802         struct mod_paths *mp;
 803         char *path = "";
 804         char *kernel = "linux";
 805
 806         if (argc >= 2)
 807                 path = argv[1];
 808         if (argc == 3)
 809                 kernel = argv[2];
 810         if (argc > 3) {
 811                 printf("%s [path] [kernel]\n", argv[0]);
 812                 return 0;
 813         }
 814
 815         for (mp = mod_paths; mp->name != NULL; mp++) {
 816                 struct module_info info;
 817                 int rc;
 818                 size_t crap;
 819                 int query_module(const char *name, int which, void *buf,
 820                                  size_t bufsize, size_t *ret);
 821
 822                 rc = query_module(mp->name, QM_INFO, &info, sizeof(info),
 823                                   &crap);
 824                 if (rc < 0) {
 825                         if (errno != ENOENT)
 826                                 printf("query_module(%s) failed: %s\n",
 827                                        mp->name, strerror(errno));
 828                 } else {
 829                         printf("add-symbol-file %s%s%s/%s.o 0x%0lx\n", path,
 830                                path[0] ? "/" : "", mp->path, mp->name,
 831                                info.addr + sizeof(struct module));
 832                 }
 833         }
 834
 835         return 0;
 836 #endif // Headers are 2.6-only
 837 #endif // !HAVE_LINUX_VERSION_H
 838         return -EINVAL;
 839 }
 840
 841 static int jt_dbg_modules_2_5(int argc, char **argv)
 842 {
 843         struct mod_paths *mp;
 844         char *path = "";
 845         char *kernel = "linux";
 846         const char *proc = "/proc/modules";
 847         char modname[128], others[4096];
 848         long modaddr;
 849         int rc;
 850         FILE *file;
 851
 852         if (argc >= 2)
 853                 path = argv[1];
 854         if (argc == 3)
 855                 kernel = argv[2];
 856         if (argc > 3) {
 857                 printf("%s [path] [kernel]\n", argv[0]);
 858                 return 0;
 859         }
 860
 861         file = fopen(proc, "r");
 862         if (!file) {
 863                 printf("failed open %s: %s\n", proc, strerror(errno));
 864                 return 0;
 865         }
 866
 867         while ((rc = fscanf(file, "%s %s %s %s %s %lx\n",
 868                 modname, others, others, others, others, &modaddr)) == 6) {
 869                 for (mp = mod_paths; mp->name != NULL; mp++) {
 870                         if (!strcmp(mp->name, modname))
 871                                 break;
 872                 }
 873                 if (mp->name) {
 874                         printf("add-symbol-file %s%s%s/%s.o 0x%0lx\n", path,
 875                                path[0] ? "/" : "", mp->path, mp->name, modaddr);
 876                 }
 877         }
 878
 879         fclose(file);
 880         return 0;
 881 }
 882
 883 int jt_dbg_modules(int argc, char **argv)
 884 {
 885         int rc = 0;
 886         struct utsname sysinfo;
 887
 888         rc = uname(&sysinfo);
 889         if (rc) {
 890                 printf("uname() failed: %s\n", strerror(errno));
 891                 return 0;
 892         }
 893
 894         if (sysinfo.release[2] > '4') {
 895                 return jt_dbg_modules_2_5(argc, argv);
 896         } else {
 897                 return jt_dbg_modules_2_4(argc, argv);
 898         }
 899
 900         return 0;
 901 }
 902
 903 int jt_dbg_panic(int argc, char **argv)
 904 {
 905         int rc;
 906         struct libcfs_ioctl_data data;
 907
 908         if (argc != 1) {
 909                 fprintf(stderr, "usage: %s\n", argv[0]);
 910                 return 0;
 911         }
 912
 913         memset(&data, 0, sizeof(data));
 914         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 915                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 916                 return -1;
 917         }
 918
 919         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_PANIC, buf);
 920         if (rc) {
 921                 fprintf(stderr, "IOC_LIBCFS_PANIC failed: %s\n",
 922                         strerror(errno));
 923                 return -1;
 924         }
 925         return 0;
 926 }