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", "mgmt", "lnet", "lnd",
  73          "pinger", "filter", "", "echo",
  74          "ldlm", "lov", "", "",
  75          "", "", "", "lmv",
  76          "", "sec", "gss", "",
  77          "mgc", "mgs", "fid", "fld", NULL};
  78 static const char *libcfs_debug_masks[] =
  79         {"trace", "inode", "super", "ext2",
  80          "malloc", "cache", "info", "ioctl",
  81          "neterror", "net", "warning", "buffs",
  82          "other", "dentry", "nettrace", "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 };
 325
 326 static int cmp_rec(const void *p1, const void *p2)
 327 {
 328         struct dbg_line *d1 = *(struct dbg_line **)p1;
 329         struct dbg_line *d2 = *(struct dbg_line **)p2;
 330
 331         if (d1->hdr->ph_sec < d2->hdr->ph_sec)
 332                 return -1;
 333         if (d1->hdr->ph_sec == d2->hdr->ph_sec &&
 334             d1->hdr->ph_usec < d2->hdr->ph_usec)
 335                 return -1;
 336         if (d1->hdr->ph_sec == d2->hdr->ph_sec &&
 337             d1->hdr->ph_usec == d2->hdr->ph_usec)
 338                 return 0;
 339         return 1;
 340 }
 341
 342 static void print_rec(struct dbg_line **linev, int used, FILE *out)
 343 {
 344         int i;
 345
 346         for (i = 0; i < used; i++) {
 347                 struct dbg_line *line = linev[i];
 348                 struct ptldebug_header *hdr = line->hdr;
 349
 350                 fprintf(out, "%08x:%08x:%u:%u.%06llu:%u:%u:%u:(%s:%u:%s()) %s",
 351                         hdr->ph_subsys, hdr->ph_mask, hdr->ph_cpu_id,
 352                         hdr->ph_sec, (unsigned long long)hdr->ph_usec,
 353                         hdr->ph_stack, hdr->ph_pid, hdr->ph_extern_pid,
 354                         line->file, hdr->ph_line_num, line->fn, line->text);
 355                 free(line->hdr);
 356                 free(line);
 357         }
 358         free(linev);
 359 }
 360
 361 static int add_rec(struct dbg_line *line, struct dbg_line ***linevp, int *lenp,
 362                    int used)
 363 {
 364         struct dbg_line **linev = *linevp;
 365
 366         if (used == *lenp) {
 367                 int nlen = *lenp + 512;
 368                 int nsize = nlen * sizeof(struct dbg_line *);
 369
 370                 linev = *linevp ? realloc(*linevp, nsize) : malloc(nsize);
 371                 if (!linev)
 372                         return 0;
 373                 *linevp = linev;
 374                 *lenp = nlen;
 375         }
 376         linev[used] = line;
 377         return 1;
 378 }
 379
 380 static int parse_buffer(FILE *in, FILE *out)
 381 {
 382         struct dbg_line *line;
 383         struct ptldebug_header *hdr;
 384         char buf[4097], *p;
 385         int rc;
 386         unsigned long dropped = 0, kept = 0;
 387         struct dbg_line **linev = NULL;
 388         int linev_len = 0;
 389
 390         while (1) {
 391                 rc = fread(buf, sizeof(hdr->ph_len) + sizeof(hdr->ph_flags), 1, in);
 392                 if (rc <= 0)
 393                         break;
 394
 395                 hdr = (void *)buf;
 396                 if (hdr->ph_len == 0)
 397                         break;
 398                 if (hdr->ph_len > 4094) {
 399                         fprintf(stderr, "unexpected large record: %d bytes.  "
 400                                 "aborting.\n",
 401                                 hdr->ph_len);
 402                         break;
 403                 }
 404
 405                 rc = fread(buf + sizeof(hdr->ph_len) + sizeof(hdr->ph_flags), 1,
 406                            hdr->ph_len - sizeof(hdr->ph_len) - sizeof(hdr->ph_flags), in);
 407                 if (rc <= 0)
 408                         break;
 409
 410                 if (hdr->ph_mask &&
 411                     (!(subsystem_mask & hdr->ph_subsys) ||
 412                      (!(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.%lu.%u",time(NULL),getpid());
 487
 488         if (stat(filename, &st) == 0 && S_ISREG(st.st_mode))
 489                 unlink(filename);
 490
 491         fd = dbg_open_ctlhandle(DUMP_KERNEL_CTL_NAME);
 492         if (fd < 0) {
 493                 fprintf(stderr, "open(dump_kernel) failed: %s\n",
 494                         strerror(errno));
 495                 return 1;
 496         }
 497
 498         rc = dbg_write_cmd(fd, filename, strlen(filename));
 499         if (rc != 0) {
 500                 fprintf(stderr, "write(%s) failed: %s\n", filename,
 501                         strerror(errno));
 502                 close(fd);
 503                 return 1;
 504         }
 505         dbg_close_ctlhandle(fd);
 506
 507         if (raw)
 508                 return 0;
 509
 510         in = fopen(filename, "r");
 511         if (in == NULL) {
 512                 if (errno == ENOENT) /* no dump file created */
 513                         return 0;
 514
 515                 fprintf(stderr, "fopen(%s) failed: %s\n", filename,
 516                         strerror(errno));
 517                 return 1;
 518         }
 519         if (argc > 1) {
 520                 out = fopen(argv[1], "w");
 521                 if (out == NULL) {
 522                         fprintf(stderr, "fopen(%s) failed: %s\n", argv[1],
 523                                 strerror(errno));
 524                         fclose(in);
 525                         return 1;
 526                 }
 527         }
 528
 529         rc = parse_buffer(in, out);
 530         fclose(in);
 531         if (argc > 1)
 532                 fclose(out);
 533         if (rc) {
 534                 fprintf(stderr, "parse_buffer failed; leaving tmp file %s "
 535                         "behind.\n", filename);
 536         } else {
 537                 rc = unlink(filename);
 538                 if (rc)
 539                         fprintf(stderr, "dumped successfully, but couldn't "
 540                                 "unlink tmp file %s: %s\n", filename,
 541                                 strerror(errno));
 542         }
 543         return rc;
 544 }
 545
 546 int jt_dbg_debug_file(int argc, char **argv)
 547 {
 548         int    fdin;
 549         int    fdout;
 550         FILE  *in;
 551         FILE  *out = stdout;
 552         int    rc;
 553
 554         if (argc > 3 || argc < 2) {
 555                 fprintf(stderr, "usage: %s <input> [output]\n", argv[0]);
 556                 return 0;
 557         }
 558
 559         fdin = open(argv[1], O_RDONLY | O_LARGEFILE);
 560         if (fdin == -1) {
 561                 fprintf(stderr, "open(%s) failed: %s\n", argv[1],
 562                         strerror(errno));
 563                 return 1;
 564         }
 565         in = fdopen(fdin, "r");
 566         if (in == NULL) {
 567                 fprintf(stderr, "fopen(%s) failed: %s\n", argv[1],
 568                         strerror(errno));
 569                 close(fdin);
 570                 return 1;
 571         }
 572         if (argc > 2) {
 573                 fdout = open(argv[2],
 574                              O_CREAT | O_TRUNC | O_WRONLY | O_LARGEFILE,
 575                              0600);
 576                 if (fdout == -1) {
 577                         fprintf(stderr, "open(%s) failed: %s\n", argv[2],
 578                                 strerror(errno));
 579                         fclose(in);
 580                         return 1;
 581                 }
 582                 out = fdopen(fdout, "w");
 583                 if (out == NULL) {
 584                         fprintf(stderr, "fopen(%s) failed: %s\n", argv[2],
 585                                 strerror(errno));
 586                         fclose(in);
 587                         close(fdout);
 588                         return 1;
 589                 }
 590         }
 591
 592         rc = parse_buffer(in, out);
 593
 594         fclose(in);
 595         if (out != stdout)
 596                 fclose(out);
 597
 598         return rc;
 599 }
 600
 601 const char debug_daemon_usage[] = "usage: %s {start file [MB]|stop}\n";
 602
 603 int jt_dbg_debug_daemon(int argc, char **argv)
 604 {
 605         int  rc;
 606         int  fd;
 607
 608         if (argc <= 1) {
 609                 fprintf(stderr, debug_daemon_usage, argv[0]);
 610                 return 1;
 611         }
 612
 613         fd = dbg_open_ctlhandle(DAEMON_CTL_NAME);
 614         if (fd < 0)
 615                 return -1;
 616
 617         rc = -1;
 618         if (strcasecmp(argv[1], "start") == 0) {
 619              if (argc < 3 || argc > 4 ||
 620                     (argc == 4 && strlen(argv[3]) > 5)) {
 621                         fprintf(stderr, debug_daemon_usage, argv[0]);
 622                         goto out;
 623                 }
 624                 if (argc == 4) {
 625                         char       buf[12];
 626                         const long min_size = 10;
 627                         const long max_size = 20480;
 628                         long       size;
 629                         char      *end;
 630
 631                         size = strtoul(argv[3], &end, 0);
 632                         if (size < min_size ||
 633                             size > max_size ||
 634                             *end != 0) {
 635                                 fprintf(stderr, "size %s invalid, must be in "
 636                                         "the range %ld-%ld MB\n", argv[3],
 637                                         min_size, max_size);
 638                                 goto out;
 639                         }
 640                         snprintf(buf, sizeof(buf), "size=%ld", size);
 641                         rc = dbg_write_cmd(fd, buf, strlen(buf));
 642
 643                         if (rc != 0) {
 644                                 fprintf(stderr, "set %s failed: %s\n",
 645                                         buf, strerror(errno));
 646                                 goto out;
 647                         }
 648                 }
 649
 650                 rc = dbg_write_cmd(fd, argv[2], strlen(argv[2]));
 651                 if (rc != 0) {
 652                         fprintf(stderr, "start debug_daemon on %s failed: %s\n",
 653                                 argv[2], strerror(errno));
 654                         goto out;
 655                 }
 656                 rc = 0;
 657                 goto out;
 658         }
 659         if (strcasecmp(argv[1], "stop") == 0) {
 660                 rc = dbg_write_cmd(fd, "stop", 4);
 661                 if (rc != 0) {
 662                         fprintf(stderr, "stopping debug_daemon failed: %s\n",
 663                                 strerror(errno));
 664                         goto out;
 665                 }
 666
 667                 rc = 0;
 668                 goto out;
 669         }
 670
 671         fprintf(stderr, debug_daemon_usage, argv[0]);
 672         rc = -1;
 673 out:
 674         dbg_close_ctlhandle(fd);
 675         return rc;
 676 }
 677
 678 int jt_dbg_clear_debug_buf(int argc, char **argv)
 679 {
 680         int rc;
 681         struct libcfs_ioctl_data data;
 682
 683         if (argc != 1) {
 684                 fprintf(stderr, "usage: %s\n", argv[0]);
 685                 return 0;
 686         }
 687
 688         memset(&data, 0, sizeof(data));
 689         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 690                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 691                 return -1;
 692         }
 693
 694         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_CLEAR_DEBUG, buf);
 695         if (rc) {
 696                 fprintf(stderr, "IOC_LIBCFS_CLEAR_DEBUG failed: %s\n",
 697                         strerror(errno));
 698                 return -1;
 699         }
 700         return 0;
 701 }
 702
 703 int jt_dbg_mark_debug_buf(int argc, char **argv)
 704 {
 705         static char scratch[MAX_MARK_SIZE] = { '\0' };
 706         int rc, max_size = MAX_MARK_SIZE-1;
 707         struct libcfs_ioctl_data data = { 0 };
 708         char *text;
 709         time_t now = time(NULL);
 710
 711         if (argc > 1) {
 712                 int count;
 713                 text = scratch;
 714                 strncpy(text, argv[1], max_size);
 715                 max_size-=strlen(argv[1]);
 716                 for (count = 2; (count < argc) && (max_size > 0); count++){
 717                         strncat(text, " ", max_size);
 718                         max_size -= 1;
 719                         strncat(text, argv[count], max_size);
 720                         max_size -= strlen(argv[count]);
 721                 }
 722         } else {
 723                 text = ctime(&now);
 724         }
 725
 726         data.ioc_inllen1 = strlen(text) + 1;
 727         data.ioc_inlbuf1 = text;
 728         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 729                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 730                 return -1;
 731         }
 732
 733         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_MARK_DEBUG, buf);
 734         if (rc) {
 735                 fprintf(stderr, "IOC_LIBCFS_MARK_DEBUG failed: %s\n",
 736                         strerror(errno));
 737                 return -1;
 738         }
 739         return 0;
 740 }
 741
 742 static struct mod_paths {
 743         char *name, *path;
 744 } mod_paths[] = {
 745         {"libcfs", "lnet/libcfs"},
 746         {"lnet", "lnet/lnet"},
 747         {"kciblnd", "lnet/klnds/ciblnd"},
 748         {"kgmlnd", "lnet/klnds/gmlnd"},
 749         {"kmxlnd", "lnet/klnds/mxlnd"},
 750         {"kiiblnd", "lnet/klnds/iiblnd"},
 751         {"ko2iblnd", "lnet/klnds/o2iblnd"},
 752         {"kopeniblnd", "lnet/klnds/openiblnd"},
 753         {"kptllnd", "lnet/klnds/ptllnd"},
 754         {"kqswlnd", "lnet/klnds/qswlnd"},
 755         {"kralnd", "lnet/klnds/ralnd"},
 756         {"ksocklnd", "lnet/klnds/socklnd"},
 757         {"ktdilnd", "lnet/klnds/tdilnd"},
 758         {"kviblnd", "lnet/klnds/viblnd"},
 759         {"lvfs", "lustre/lvfs"},
 760         {"obdclass", "lustre/obdclass"},
 761         {"llog_test", "lustre/obdclass"},
 762         {"ptlrpc_gss", "lustre/ptlrpc/gss"},
 763         {"ptlrpc", "lustre/ptlrpc"},
 764         {"gks", "lustre/sec/gks"},
 765         {"gkc", "lustre/sec/gks"},
 766         {"ost", "lustre/ost"},
 767         {"osc", "lustre/osc"},
 768         {"mds", "lustre/mds"},
 769         {"mdc", "lustre/mdc"},
 770         {"llite", "lustre/llite"},
 771         {"lustre", "lustre/llite"},
 772         {"ldiskfs", "lustre/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 }