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 #ifndef _GNU_SOURCE
  28 #define  _GNU_SOURCE
  29 #endif
  30
  31 #include <stdio.h>
  32 #ifdef HAVE_NETDB_H
  33 #include <netdb.h>
  34 #endif
  35 #include <stdlib.h>
  36 #include <string.h>
  37 #ifdef HAVE_SYS_IOCTL_H
  38 #include <sys/ioctl.h>
  39 #endif
  40 #ifndef _IOWR
  41 #include "ioctl.h"
  42 #endif
  43 #include <fcntl.h>
  44 #include <errno.h>
  45 #include <unistd.h>
  46 #include <assert.h>
  47
  48 #include <sys/types.h>
  49 #include <sys/socket.h>
  50 #include <sys/stat.h>
  51 #include <sys/mman.h>
  52 #include <sys/utsname.h>
  53
  54 #include <lnet/api-support.h>
  55 #include <lnet/lnetctl.h>
  56 #include <libcfs/portals_utils.h>
  57 #include "parser.h"
  58
  59 #include <time.h>
  60
  61 static char rawbuf[8192];
  62 static char *buf = rawbuf;
  63 static int max = 8192;
  64 /*static int g_pfd = -1;*/
  65 static int subsystem_mask = ~0;
  66 static int debug_mask = ~0;
  67
  68 #define MAX_MARK_SIZE 256
  69
  70 static const char *libcfs_debug_subsystems[] =
  71         {"undefined", "mdc", "mds", "osc",
  72          "ost", "class", "log", "llite",
  73          "rpc", "mgmt", "lnet", "lnd",
  74          "pinger", "filter", "", "echo",
  75          "ldlm", "lov", "", "",
  76          "", "", "", "lmv",
  77          "", "sec", "gss", "",
  78          "mgc", "mgs", "fid", "fld", NULL};
  79 static const char *libcfs_debug_masks[] =
  80         {"trace", "inode", "super", "ext2",
  81          "malloc", "cache", "info", "ioctl",
  82          "neterror", "net", "warning", "buffs",
  83          "other", "dentry", "nettrace", "page",
  84          "dlmtrace", "error", "emerg", "ha",
  85          "rpctrace", "vfstrace", "reada", "mmap",
  86          "config", "console", "quota", "sec", NULL};
  87
  88 struct debug_daemon_cmd {
  89         char *cmd;
  90         unsigned int cmdv;
  91 };
  92
  93 static const struct debug_daemon_cmd libcfs_debug_daemon_cmd[] = {
  94         {"start", DEBUG_DAEMON_START},
  95         {"stop", DEBUG_DAEMON_STOP},
  96         {0, 0}
  97 };
  98
  99 #ifdef __linux__
 100
 101 #define DAEMON_CTL_NAME         "/proc/sys/lnet/daemon_file"
 102 #define SUBSYS_DEBUG_CTL_NAME   "/proc/sys/lnet/subsystem_debug"
 103 #define DEBUG_CTL_NAME          "/proc/sys/lnet/debug"
 104 #define DUMP_KERNEL_CTL_NAME    "/proc/sys/lnet/dump_kernel"
 105
 106 static int
 107 dbg_open_ctlhandle(const char *str)
 108 {
 109         int fd;
 110         fd = open(str, O_WRONLY);
 111         if (fd < 0) {
 112                 fprintf(stderr, "open %s failed: %s\n", str,
 113                         strerror(errno));
 114                 return -1;
 115         }
 116         return fd;
 117 }
 118
 119 static void
 120 dbg_close_ctlhandle(int fd)
 121 {
 122         close(fd);
 123 }
 124
 125 static int
 126 dbg_write_cmd(int fd, char *str, int len)
 127 {
 128         int    rc  = write(fd, str, len);
 129
 130         return (rc == len ? 0 : 1);
 131 }
 132
 133 #elif defined(__DARWIN__)
 134
 135 #define DAEMON_CTL_NAME         "lnet.trace_daemon"
 136 #define SUBSYS_DEBUG_CTL_NAME   "lnet.subsystem_debug"
 137 #define DEBUG_CTL_NAME          "lnet.debug"
 138 #define DUMP_KERNEL_CTL_NAME    "lnet.trace_dumpkernel"
 139
 140 static char     sysctl_name[128];
 141 static int
 142 dbg_open_ctlhandle(const char *str)
 143 {
 144
 145         if (strlen(str)+1 > 128) {
 146                 fprintf(stderr, "sysctl name is too long: %s.\n", str);
 147                 return -1;
 148         }
 149         strcpy(sysctl_name, str);
 150
 151         return 0;
 152 }
 153
 154 static void
 155 dbg_close_ctlhandle(int fd)
 156 {
 157         sysctl_name[0] = '\0';
 158         return;
 159 }
 160
 161 static int
 162 dbg_write_cmd(int fd, char *str, int len)
 163 {
 164         int     rc;
 165
 166         rc = sysctlbyname(sysctl_name, NULL, NULL, str, len+1);
 167         if (rc != 0) {
 168                 fprintf(stderr, "sysctl %s with cmd (%s) error: %d\n",
 169                         sysctl_name, str, errno);
 170         }
 171         return (rc == 0 ? 0: 1);
 172 }
 173
 174 #else
 175 #error - Unknown sysctl convention.
 176 #endif
 177
 178 static int do_debug_mask(char *name, int enable)
 179 {
 180         int found = 0, i;
 181
 182         for (i = 0; libcfs_debug_subsystems[i] != NULL; i++) {
 183                 if (strcasecmp(name, libcfs_debug_subsystems[i]) == 0 ||
 184                     strcasecmp(name, "all_subs") == 0) {
 185                         printf("%s output from subsystem \"%s\"\n",
 186                                 enable ? "Enabling" : "Disabling",
 187                                 libcfs_debug_subsystems[i]);
 188                         if (enable)
 189                                 subsystem_mask |= (1 << i);
 190                         else
 191                                 subsystem_mask &= ~(1 << i);
 192                         found = 1;
 193                 }
 194         }
 195         for (i = 0; libcfs_debug_masks[i] != NULL; i++) {
 196                 if (strcasecmp(name, libcfs_debug_masks[i]) == 0 ||
 197                     strcasecmp(name, "all_types") == 0) {
 198                         printf("%s output of type \"%s\"\n",
 199                                 enable ? "Enabling" : "Disabling",
 200                                 libcfs_debug_masks[i]);
 201                         if (enable)
 202                                 debug_mask |= (1 << i);
 203                         else
 204                                 debug_mask &= ~(1 << i);
 205                         found = 1;
 206                 }
 207         }
 208
 209         return found;
 210 }
 211
 212 int dbg_initialize(int argc, char **argv)
 213 {
 214         return 0;
 215 }
 216
 217 int jt_dbg_filter(int argc, char **argv)
 218 {
 219         int   i;
 220
 221         if (argc < 2) {
 222                 fprintf(stderr, "usage: %s <subsystem ID or debug mask>\n",
 223                         argv[0]);
 224                 return 0;
 225         }
 226
 227         for (i = 1; i < argc; i++)
 228                 if (!do_debug_mask(argv[i], 0))
 229                         fprintf(stderr, "Unknown subsystem or debug type: %s\n",
 230                                 argv[i]);
 231         return 0;
 232 }
 233
 234 int jt_dbg_show(int argc, char **argv)
 235 {
 236         int    i;
 237
 238         if (argc < 2) {
 239                 fprintf(stderr, "usage: %s <subsystem ID or debug mask>\n",
 240                         argv[0]);
 241                 return 0;
 242         }
 243
 244         for (i = 1; i < argc; i++)
 245                 if (!do_debug_mask(argv[i], 1))
 246                         fprintf(stderr, "Unknown subsystem or debug type: %s\n",
 247                                 argv[i]);
 248
 249         return 0;
 250 }
 251
 252 static int applymask(char* procpath, int value)
 253 {
 254         int rc;
 255         char buf[64];
 256         int len = snprintf(buf, 64, "%d", value);
 257
 258         int fd = dbg_open_ctlhandle(procpath);
 259         if (fd == -1) {
 260                 fprintf(stderr, "Unable to open %s: %s\n",
 261                         procpath, strerror(errno));
 262                 return fd;
 263         }
 264         rc = dbg_write_cmd(fd, buf, len+1);
 265         if (rc != 0) {
 266                 fprintf(stderr, "Write to %s failed: %s\n",
 267                         procpath, strerror(errno));
 268                 return rc;
 269         }
 270         dbg_close_ctlhandle(fd);
 271         return 0;
 272 }
 273
 274 static void applymask_all(unsigned int subs_mask, unsigned int debug_mask)
 275 {
 276         if (!dump_filename) {
 277                 applymask(SUBSYS_DEBUG_CTL_NAME, subs_mask);
 278                 applymask(DEBUG_CTL_NAME, debug_mask);
 279         } else {
 280                 struct libcfs_debug_ioctl_data data;
 281
 282                 data.hdr.ioc_len = sizeof(data);
 283                 data.hdr.ioc_version = 0;
 284                 data.subs = subs_mask;
 285                 data.debug = debug_mask;
 286
 287                 dump(OBD_DEV_ID, LIBCFS_IOC_DEBUG_MASK, &data);
 288         }
 289         printf("Applied subsystem_debug=%d, debug=%d to /proc/sys/lnet\n",
 290                subs_mask, debug_mask);
 291 }
 292
 293 int jt_dbg_list(int argc, char **argv)
 294 {
 295         int i;
 296
 297         if (argc != 2) {
 298                 fprintf(stderr, "usage: %s <subs || types>\n", argv[0]);
 299                 return 0;
 300         }
 301
 302         if (strcasecmp(argv[1], "subs") == 0) {
 303                 printf("Subsystems: all_subs");
 304                 for (i = 0; libcfs_debug_subsystems[i] != NULL; i++)
 305                         if (libcfs_debug_subsystems[i][0])
 306                                 printf(", %s", libcfs_debug_subsystems[i]);
 307                 printf("\n");
 308         } else if (strcasecmp(argv[1], "types") == 0) {
 309                 printf("Types: all_types");
 310                 for (i = 0; libcfs_debug_masks[i] != NULL; i++)
 311                         printf(", %s", libcfs_debug_masks[i]);
 312                 printf("\n");
 313         } else if (strcasecmp(argv[1], "applymasks") == 0) {
 314                 applymask_all(subsystem_mask, debug_mask);
 315         }
 316         return 0;
 317 }
 318
 319 /* all strings nul-terminated; only the struct and hdr need to be freed */
 320 struct dbg_line {
 321         struct ptldebug_header *hdr;
 322         char *file;
 323         char *fn;
 324         char *text;
 325 };
 326
 327 static int cmp_rec(const void *p1, const void *p2)
 328 {
 329         struct dbg_line *d1 = *(struct dbg_line **)p1;
 330         struct dbg_line *d2 = *(struct dbg_line **)p2;
 331
 332         if (d1->hdr->ph_sec < d2->hdr->ph_sec)
 333                 return -1;
 334         if (d1->hdr->ph_sec == d2->hdr->ph_sec &&
 335             d1->hdr->ph_usec < d2->hdr->ph_usec)
 336                 return -1;
 337         if (d1->hdr->ph_sec == d2->hdr->ph_sec &&
 338             d1->hdr->ph_usec == d2->hdr->ph_usec)
 339                 return 0;
 340         return 1;
 341 }
 342
 343 static void print_rec(struct dbg_line **linev, int used, FILE *out)
 344 {
 345         int i;
 346
 347         for (i = 0; i < used; i++) {
 348                 struct dbg_line *line = linev[i];
 349                 struct ptldebug_header *hdr = line->hdr;
 350
 351                 fprintf(out, "%08x:%08x:%u:%u.%06llu:%u:%u:%u:(%s:%u:%s()) %s",
 352                         hdr->ph_subsys, hdr->ph_mask, hdr->ph_cpu_id,
 353                         hdr->ph_sec, (unsigned long long)hdr->ph_usec,
 354                         hdr->ph_stack, hdr->ph_pid, hdr->ph_extern_pid,
 355                         line->file, hdr->ph_line_num, line->fn, line->text);
 356                 free(line->hdr);
 357                 free(line);
 358         }
 359         free(linev);
 360 }
 361
 362 static int add_rec(struct dbg_line *line, struct dbg_line ***linevp, int *lenp,
 363                    int used)
 364 {
 365         struct dbg_line **linev = *linevp;
 366
 367         if (used == *lenp) {
 368                 int nlen = *lenp + 512;
 369                 int nsize = nlen * sizeof(struct dbg_line *);
 370
 371                 linev = *linevp ? realloc(*linevp, nsize) : malloc(nsize);
 372                 if (!linev)
 373                         return 0;
 374                 *linevp = linev;
 375                 *lenp = nlen;
 376         }
 377         linev[used] = line;
 378         return 1;
 379 }
 380
 381 static int parse_buffer(FILE *in, FILE *out)
 382 {
 383         struct dbg_line *line;
 384         struct ptldebug_header *hdr;
 385         char buf[4097], *p;
 386         int rc;
 387         unsigned long dropped = 0, kept = 0;
 388         struct dbg_line **linev = NULL;
 389         int linev_len = 0;
 390
 391         while (1) {
 392                 rc = fread(buf, sizeof(hdr->ph_len) + sizeof(hdr->ph_flags), 1, in);
 393                 if (rc <= 0)
 394                         break;
 395
 396                 hdr = (void *)buf;
 397                 if (hdr->ph_len == 0)
 398                         break;
 399                 if (hdr->ph_len > 4094) {
 400                         fprintf(stderr, "unexpected large record: %d bytes.  "
 401                                 "aborting.\n",
 402                                 hdr->ph_len);
 403                         break;
 404                 }
 405
 406                 rc = fread(buf + sizeof(hdr->ph_len) + sizeof(hdr->ph_flags), 1,
 407                            hdr->ph_len - sizeof(hdr->ph_len) - sizeof(hdr->ph_flags), in);
 408                 if (rc <= 0)
 409                         break;
 410
 411                 if ((hdr->ph_subsys && !(subsystem_mask & hdr->ph_subsys)) ||
 412                     (hdr->ph_mask   && !(debug_mask & hdr->ph_mask))) {
 413                         dropped++;
 414                         continue;
 415                 }
 416
 417                 line = malloc(sizeof(*line));
 418                 if (line == NULL) {
 419                         fprintf(stderr, "malloc failed; printing accumulated "
 420                                 "records and exiting.\n");
 421                         break;
 422                 }
 423
 424                 line->hdr = malloc(hdr->ph_len + 1);
 425                 if (line->hdr == NULL) {
 426                         free(line);
 427                         fprintf(stderr, "malloc failed; printing accumulated "
 428                                 "records and exiting.\n");
 429                         break;
 430                 }
 431
 432                 p = (void *)line->hdr;
 433                 memcpy(line->hdr, buf, hdr->ph_len);
 434                 p[hdr->ph_len] = '\0';
 435
 436                 p += sizeof(*hdr);
 437                 line->file = p;
 438                 p += strlen(line->file) + 1;
 439                 line->fn = p;
 440                 p += strlen(line->fn) + 1;
 441                 line->text = p;
 442
 443                 if (!add_rec(line, &linev, &linev_len, kept)) {
 444                         fprintf(stderr, "malloc failed; printing accumulated "
 445                                 "records and exiting.\n");
 446                         break;
 447                 }
 448                 kept++;
 449         }
 450
 451         if (linev) {
 452                 qsort(linev, kept, sizeof(struct dbg_line *), cmp_rec);
 453                 print_rec(linev, kept, out);
 454         }
 455
 456         printf("Debug log: %lu lines, %lu kept, %lu dropped.\n",
 457                 dropped + kept, kept, dropped);
 458         return 0;
 459 }
 460
 461 int jt_dbg_debug_kernel(int argc, char **argv)
 462 {
 463         char filename[4096];
 464         struct stat st;
 465         int rc, raw = 0, fd;
 466         FILE *in, *out = stdout;
 467
 468         if (argc > 3) {
 469                 fprintf(stderr, "usage: %s [file] [raw]\n", argv[0]);
 470                 return 0;
 471         }
 472
 473         if (argc > 2) {
 474                 raw = atoi(argv[2]);
 475         } else if (argc > 1 && (argv[1][0] == '0' || argv[1][0] == '1')) {
 476                 raw = atoi(argv[1]);
 477                 argc--;
 478         }
 479
 480         /* If we are dumping raw (which means no conversion step to ASCII)
 481          * then dump directly to any supplied filename, otherwise this is
 482          * just a temp file and we dump to the real file at convert time. */
 483         if (argc > 1 && raw)
 484                 strcpy(filename, argv[1]);
 485         else
 486                 sprintf(filename, "/tmp/lustre-log."CFS_TIME_T".%u",
 487                         time(NULL),getpid());
 488
 489         if (stat(filename, &st) == 0 && S_ISREG(st.st_mode))
 490                 unlink(filename);
 491
 492         fd = dbg_open_ctlhandle(DUMP_KERNEL_CTL_NAME);
 493         if (fd < 0) {
 494                 fprintf(stderr, "open(dump_kernel) failed: %s\n",
 495                         strerror(errno));
 496                 return 1;
 497         }
 498
 499         rc = dbg_write_cmd(fd, filename, strlen(filename));
 500         if (rc != 0) {
 501                 fprintf(stderr, "write(%s) failed: %s\n", filename,
 502                         strerror(errno));
 503                 close(fd);
 504                 return 1;
 505         }
 506         dbg_close_ctlhandle(fd);
 507
 508         if (raw)
 509                 return 0;
 510
 511         in = fopen(filename, "r");
 512         if (in == NULL) {
 513                 if (errno == ENOENT) /* no dump file created */
 514                         return 0;
 515
 516                 fprintf(stderr, "fopen(%s) failed: %s\n", filename,
 517                         strerror(errno));
 518                 return 1;
 519         }
 520         if (argc > 1) {
 521                 out = fopen(argv[1], "w");
 522                 if (out == NULL) {
 523                         fprintf(stderr, "fopen(%s) failed: %s\n", argv[1],
 524                                 strerror(errno));
 525                         fclose(in);
 526                         return 1;
 527                 }
 528         }
 529
 530         rc = parse_buffer(in, out);
 531         fclose(in);
 532         if (argc > 1)
 533                 fclose(out);
 534         if (rc) {
 535                 fprintf(stderr, "parse_buffer failed; leaving tmp file %s "
 536                         "behind.\n", filename);
 537         } else {
 538                 rc = unlink(filename);
 539                 if (rc)
 540                         fprintf(stderr, "dumped successfully, but couldn't "
 541                                 "unlink tmp file %s: %s\n", filename,
 542                                 strerror(errno));
 543         }
 544         return rc;
 545 }
 546
 547 int jt_dbg_debug_file(int argc, char **argv)
 548 {
 549         int    fdin;
 550         int    fdout;
 551         FILE  *in;
 552         FILE  *out = stdout;
 553         int    rc;
 554
 555         if (argc > 3 || argc < 2) {
 556                 fprintf(stderr, "usage: %s <input> [output]\n", argv[0]);
 557                 return 0;
 558         }
 559
 560         fdin = open(argv[1], O_RDONLY | O_LARGEFILE);
 561         if (fdin == -1) {
 562                 fprintf(stderr, "open(%s) failed: %s\n", argv[1],
 563                         strerror(errno));
 564                 return 1;
 565         }
 566         in = fdopen(fdin, "r");
 567         if (in == NULL) {
 568                 fprintf(stderr, "fopen(%s) failed: %s\n", argv[1],
 569                         strerror(errno));
 570                 close(fdin);
 571                 return 1;
 572         }
 573         if (argc > 2) {
 574                 fdout = open(argv[2],
 575                              O_CREAT | O_TRUNC | O_WRONLY | O_LARGEFILE,
 576                              0600);
 577                 if (fdout == -1) {
 578                         fprintf(stderr, "open(%s) failed: %s\n", argv[2],
 579                                 strerror(errno));
 580                         fclose(in);
 581                         return 1;
 582                 }
 583                 out = fdopen(fdout, "w");
 584                 if (out == NULL) {
 585                         fprintf(stderr, "fopen(%s) failed: %s\n", argv[2],
 586                                 strerror(errno));
 587                         fclose(in);
 588                         close(fdout);
 589                         return 1;
 590                 }
 591         }
 592
 593         rc = parse_buffer(in, out);
 594
 595         fclose(in);
 596         if (out != stdout)
 597                 fclose(out);
 598
 599         return rc;
 600 }
 601
 602 const char debug_daemon_usage[] = "usage: %s {start file [MB]|stop}\n";
 603
 604 int jt_dbg_debug_daemon(int argc, char **argv)
 605 {
 606         int  rc;
 607         int  fd;
 608
 609         if (argc <= 1) {
 610                 fprintf(stderr, debug_daemon_usage, argv[0]);
 611                 return 1;
 612         }
 613
 614         fd = dbg_open_ctlhandle(DAEMON_CTL_NAME);
 615         if (fd < 0)
 616                 return -1;
 617
 618         rc = -1;
 619         if (strcasecmp(argv[1], "start") == 0) {
 620              if (argc < 3 || argc > 4 ||
 621                     (argc == 4 && strlen(argv[3]) > 5)) {
 622                         fprintf(stderr, debug_daemon_usage, argv[0]);
 623                         goto out;
 624                 }
 625                 if (argc == 4) {
 626                         char       buf[12];
 627                         const long min_size = 10;
 628                         const long max_size = 20480;
 629                         long       size;
 630                         char      *end;
 631
 632                         size = strtoul(argv[3], &end, 0);
 633                         if (size < min_size ||
 634                             size > max_size ||
 635                             *end != 0) {
 636                                 fprintf(stderr, "size %s invalid, must be in "
 637                                         "the range %ld-%ld MB\n", argv[3],
 638                                         min_size, max_size);
 639                                 goto out;
 640                         }
 641                         snprintf(buf, sizeof(buf), "size=%ld", size);
 642                         rc = dbg_write_cmd(fd, buf, strlen(buf));
 643
 644                         if (rc != 0) {
 645                                 fprintf(stderr, "set %s failed: %s\n",
 646                                         buf, strerror(errno));
 647                                 goto out;
 648                         }
 649                 }
 650
 651                 rc = dbg_write_cmd(fd, argv[2], strlen(argv[2]));
 652                 if (rc != 0) {
 653                         fprintf(stderr, "start debug_daemon on %s failed: %s\n",
 654                                 argv[2], strerror(errno));
 655                         goto out;
 656                 }
 657                 rc = 0;
 658                 goto out;
 659         }
 660         if (strcasecmp(argv[1], "stop") == 0) {
 661                 rc = dbg_write_cmd(fd, "stop", 4);
 662                 if (rc != 0) {
 663                         fprintf(stderr, "stopping debug_daemon failed: %s\n",
 664                                 strerror(errno));
 665                         goto out;
 666                 }
 667
 668                 rc = 0;
 669                 goto out;
 670         }
 671
 672         fprintf(stderr, debug_daemon_usage, argv[0]);
 673         rc = -1;
 674 out:
 675         dbg_close_ctlhandle(fd);
 676         return rc;
 677 }
 678
 679 int jt_dbg_clear_debug_buf(int argc, char **argv)
 680 {
 681         int rc;
 682         struct libcfs_ioctl_data data;
 683
 684         if (argc != 1) {
 685                 fprintf(stderr, "usage: %s\n", argv[0]);
 686                 return 0;
 687         }
 688
 689         memset(&data, 0, sizeof(data));
 690         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 691                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 692                 return -1;
 693         }
 694
 695         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_CLEAR_DEBUG, buf);
 696         if (rc) {
 697                 fprintf(stderr, "IOC_LIBCFS_CLEAR_DEBUG failed: %s\n",
 698                         strerror(errno));
 699                 return -1;
 700         }
 701         return 0;
 702 }
 703
 704 int jt_dbg_mark_debug_buf(int argc, char **argv)
 705 {
 706         static char scratch[MAX_MARK_SIZE] = { '\0' };
 707         int rc, max_size = MAX_MARK_SIZE-1;
 708         struct libcfs_ioctl_data data = { 0 };
 709         char *text;
 710         time_t now = time(NULL);
 711
 712         if (argc > 1) {
 713                 int count;
 714                 text = scratch;
 715                 strncpy(text, argv[1], max_size);
 716                 max_size-=strlen(argv[1]);
 717                 for (count = 2; (count < argc) && (max_size > 0); count++){
 718                         strncat(text, " ", max_size);
 719                         max_size -= 1;
 720                         strncat(text, argv[count], max_size);
 721                         max_size -= strlen(argv[count]);
 722                 }
 723         } else {
 724                 text = ctime(&now);
 725         }
 726
 727         data.ioc_inllen1 = strlen(text) + 1;
 728         data.ioc_inlbuf1 = text;
 729         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 730                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 731                 return -1;
 732         }
 733
 734         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_MARK_DEBUG, buf);
 735         if (rc) {
 736                 fprintf(stderr, "IOC_LIBCFS_MARK_DEBUG failed: %s\n",
 737                         strerror(errno));
 738                 return -1;
 739         }
 740         return 0;
 741 }
 742
 743 static struct mod_paths {
 744         char *name, *path;
 745 } mod_paths[] = {
 746         {"libcfs", "libcfs/libcfs"},
 747         {"lnet", "lnet/lnet"},
 748         {"kciblnd", "lnet/klnds/ciblnd"},
 749         {"kgmlnd", "lnet/klnds/gmlnd"},
 750         {"kmxlnd", "lnet/klnds/mxlnd"},
 751         {"kiiblnd", "lnet/klnds/iiblnd"},
 752         {"ko2iblnd", "lnet/klnds/o2iblnd"},
 753         {"kopeniblnd", "lnet/klnds/openiblnd"},
 754         {"kptllnd", "lnet/klnds/ptllnd"},
 755         {"kqswlnd", "lnet/klnds/qswlnd"},
 756         {"kralnd", "lnet/klnds/ralnd"},
 757         {"ksocklnd", "lnet/klnds/socklnd"},
 758         {"ktdilnd", "lnet/klnds/tdilnd"},
 759         {"kviblnd", "lnet/klnds/viblnd"},
 760         {"lvfs", "lustre/lvfs"},
 761         {"obdclass", "lustre/obdclass"},
 762         {"llog_test", "lustre/obdclass"},
 763         {"ptlrpc_gss", "lustre/ptlrpc/gss"},
 764         {"ptlrpc", "lustre/ptlrpc"},
 765         {"gks", "lustre/sec/gks"},
 766         {"gkc", "lustre/sec/gks"},
 767         {"ost", "lustre/ost"},
 768         {"osc", "lustre/osc"},
 769         {"mds", "lustre/mds"},
 770         {"mdc", "lustre/mdc"},
 771         {"llite", "lustre/llite"},
 772         {"lustre", "lustre/llite"},
 773         {"llite_lloop", "lustre/llite"},
 774         {"ldiskfs", "ldiskfs/ldiskfs"},
 775         {"smfs", "lustre/smfs"},
 776         {"obdecho", "lustre/obdecho"},
 777         {"ldlm", "lustre/ldlm"},
 778         {"obdfilter", "lustre/obdfilter"},
 779         {"lov", "lustre/lov"},
 780         {"lmv", "lustre/lmv"},
 781         {"fsfilt_ext3", "lustre/lvfs"},
 782         {"fsfilt_reiserfs", "lustre/lvfs"},
 783         {"fsfilt_smfs", "lustre/lvfs"},
 784         {"fsfilt_ldiskfs", "lustre/lvfs"},
 785         {"mds_ext3", "lustre/mds"},
 786         {"cobd", "lustre/cobd"},
 787         {"cmobd", "lustre/cmobd"},
 788         {"lquota", "lustre/quota"},
 789         {"mgs", "lustre/mgs"},
 790         {"mgc", "lustre/mgc"},
 791         {"mdt", "lustre/mdt"},
 792         {"mdd", "lustre/mdd"},
 793         {"osd", "lustre/osd"},
 794         {"cmm", "lustre/cmm"},
 795         {"fid", "lustre/fid"},
 796         {"fld", "lustre/fld"},
 797         {NULL, NULL}
 798 };
 799
 800 static int jt_dbg_modules_2_4(int argc, char **argv)
 801 {
 802 #ifdef HAVE_LINUX_VERSION_H
 803 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
 804         struct mod_paths *mp;
 805         char *path = "";
 806         char *kernel = "linux";
 807
 808         if (argc >= 2)
 809                 path = argv[1];
 810         if (argc == 3)
 811                 kernel = argv[2];
 812         if (argc > 3) {
 813                 printf("%s [path] [kernel]\n", argv[0]);
 814                 return 0;
 815         }
 816
 817         for (mp = mod_paths; mp->name != NULL; mp++) {
 818                 struct module_info info;
 819                 int rc;
 820                 size_t crap;
 821                 int query_module(const char *name, int which, void *buf,
 822                                  size_t bufsize, size_t *ret);
 823
 824                 rc = query_module(mp->name, QM_INFO, &info, sizeof(info),
 825                                   &crap);
 826                 if (rc < 0) {
 827                         if (errno != ENOENT)
 828                                 printf("query_module(%s) failed: %s\n",
 829                                        mp->name, strerror(errno));
 830                 } else {
 831                         printf("add-symbol-file %s%s%s/%s.o 0x%0lx\n", path,
 832                                path[0] ? "/" : "", mp->path, mp->name,
 833                                info.addr + sizeof(struct module));
 834                 }
 835         }
 836
 837         return 0;
 838 #endif // Headers are 2.6-only
 839 #endif // !HAVE_LINUX_VERSION_H
 840         return -EINVAL;
 841 }
 842
 843 static int jt_dbg_modules_2_5(int argc, char **argv)
 844 {
 845         struct mod_paths *mp;
 846         char *path = "";
 847         char *kernel = "linux";
 848         const char *proc = "/proc/modules";
 849         char modname[128], others[4096];
 850         long modaddr;
 851         int rc;
 852         FILE *file;
 853
 854         if (argc >= 2)
 855                 path = argv[1];
 856         if (argc == 3)
 857                 kernel = argv[2];
 858         if (argc > 3) {
 859                 printf("%s [path] [kernel]\n", argv[0]);
 860                 return 0;
 861         }
 862
 863         file = fopen(proc, "r");
 864         if (!file) {
 865                 printf("failed open %s: %s\n", proc, strerror(errno));
 866                 return 0;
 867         }
 868
 869         while ((rc = fscanf(file, "%s %s %s %s %s %lx\n",
 870                 modname, others, others, others, others, &modaddr)) == 6) {
 871                 for (mp = mod_paths; mp->name != NULL; mp++) {
 872                         if (!strcmp(mp->name, modname))
 873                                 break;
 874                 }
 875                 if (mp->name) {
 876                         printf("add-symbol-file %s%s%s/%s.o 0x%0lx\n", path,
 877                                path[0] ? "/" : "", mp->path, mp->name, modaddr);
 878                 }
 879         }
 880
 881         fclose(file);
 882         return 0;
 883 }
 884
 885 int jt_dbg_modules(int argc, char **argv)
 886 {
 887         int rc = 0;
 888         struct utsname sysinfo;
 889
 890         rc = uname(&sysinfo);
 891         if (rc) {
 892                 printf("uname() failed: %s\n", strerror(errno));
 893                 return 0;
 894         }
 895
 896         if (sysinfo.release[2] > '4') {
 897                 return jt_dbg_modules_2_5(argc, argv);
 898         } else {
 899                 return jt_dbg_modules_2_4(argc, argv);
 900         }
 901
 902         return 0;
 903 }
 904
 905 int jt_dbg_panic(int argc, char **argv)
 906 {
 907         int rc;
 908         struct libcfs_ioctl_data data;
 909
 910         if (argc != 1) {
 911                 fprintf(stderr, "usage: %s\n", argv[0]);
 912                 return 0;
 913         }
 914
 915         memset(&data, 0, sizeof(data));
 916         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 917                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 918                 return -1;
 919         }
 920
 921         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_PANIC, buf);
 922         if (rc) {
 923                 fprintf(stderr, "IOC_LIBCFS_PANIC failed: %s\n",
 924                         strerror(errno));
 925                 return -1;
 926         }
 927         return 0;
 928 }