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_mask &&
 410                     (!(subsystem_mask & hdr->ph_subsys) ||
 411                      (!(debug_mask & hdr->ph_mask)))) {
 412                         dropped++;
 413                         continue;
 414                 }
 415
 416                 line = malloc(sizeof(*line));
 417                 if (line == NULL) {
 418                         fprintf(stderr, "malloc failed; printing accumulated "
 419                                 "records and exiting.\n");
 420                         break;
 421                 }
 422
 423                 line->hdr = malloc(hdr->ph_len + 1);
 424                 if (line->hdr == NULL) {
 425                         free(line);
 426                         fprintf(stderr, "malloc failed; printing accumulated "
 427                                 "records and exiting.\n");
 428                         break;
 429                 }
 430
 431                 p = (void *)line->hdr;
 432                 memcpy(line->hdr, buf, hdr->ph_len);
 433                 p[hdr->ph_len] = '\0';
 434
 435                 p += sizeof(*hdr);
 436                 line->file = p;
 437                 p += strlen(line->file) + 1;
 438                 line->fn = p;
 439                 p += strlen(line->fn) + 1;
 440                 line->text = p;
 441
 442                 if (!add_rec(line, &linev, &linev_len, kept)) {
 443                         fprintf(stderr, "malloc failed; printing accumulated "
 444                                 "records and exiting.\n");
 445                         break;
 446                 }
 447                 kept++;
 448         }
 449
 450         if (linev) {
 451                 qsort(linev, kept, sizeof(struct dbg_line *), cmp_rec);
 452                 print_rec(linev, kept, out);
 453         }
 454
 455         printf("Debug log: %lu lines, %lu kept, %lu dropped.\n",
 456                 dropped + kept, kept, dropped);
 457         return 0;
 458 }
 459
 460 int jt_dbg_debug_kernel(int argc, char **argv)
 461 {
 462         char filename[4096];
 463         struct stat st;
 464         int rc, raw = 0, fd;
 465         FILE *in, *out = stdout;
 466
 467         if (argc > 3) {
 468                 fprintf(stderr, "usage: %s [file] [raw]\n", argv[0]);
 469                 return 0;
 470         }
 471
 472         if (argc > 2) {
 473                 raw = atoi(argv[2]);
 474         } else if (argc > 1 && (argv[1][0] == '0' || argv[1][0] == '1')) {
 475                 raw = atoi(argv[1]);
 476                 argc--;
 477         }
 478
 479         /* If we are dumping raw (which means no conversion step to ASCII)
 480          * then dump directly to any supplied filename, otherwise this is
 481          * just a temp file and we dump to the real file at convert time. */
 482         if (argc > 1 && raw)
 483                 strcpy(filename, argv[1]);
 484         else
 485                 sprintf(filename, "/tmp/lustre-log."CFS_TIME_T".%u",
 486                         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         {"llite_lloop", "lustre/llite"},
 773         {"ldiskfs", "ldiskfs/ldiskfs"},
 774         {"smfs", "lustre/smfs"},
 775         {"obdecho", "lustre/obdecho"},
 776         {"ldlm", "lustre/ldlm"},
 777         {"obdfilter", "lustre/obdfilter"},
 778         {"lov", "lustre/lov"},
 779         {"lmv", "lustre/lmv"},
 780         {"fsfilt_ext3", "lustre/lvfs"},
 781         {"fsfilt_reiserfs", "lustre/lvfs"},
 782         {"fsfilt_smfs", "lustre/lvfs"},
 783         {"fsfilt_ldiskfs", "lustre/lvfs"},
 784         {"mds_ext3", "lustre/mds"},
 785         {"cobd", "lustre/cobd"},
 786         {"cmobd", "lustre/cmobd"},
 787         {"lquota", "lustre/quota"},
 788         {"mgs", "lustre/mgs"},
 789         {"mgc", "lustre/mgc"},
 790         {"mdt", "lustre/mdt"},
 791         {"mdd", "lustre/mdd"},
 792         {"osd", "lustre/osd"},
 793         {"cmm", "lustre/cmm"},
 794         {"fid", "lustre/fid"},
 795         {"fld", "lustre/fld"},
 796         {NULL, NULL}
 797 };
 798
 799 static int jt_dbg_modules_2_4(int argc, char **argv)
 800 {
 801 #ifdef HAVE_LINUX_VERSION_H
 802 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
 803         struct mod_paths *mp;
 804         char *path = "";
 805         char *kernel = "linux";
 806
 807         if (argc >= 2)
 808                 path = argv[1];
 809         if (argc == 3)
 810                 kernel = argv[2];
 811         if (argc > 3) {
 812                 printf("%s [path] [kernel]\n", argv[0]);
 813                 return 0;
 814         }
 815
 816         for (mp = mod_paths; mp->name != NULL; mp++) {
 817                 struct module_info info;
 818                 int rc;
 819                 size_t crap;
 820                 int query_module(const char *name, int which, void *buf,
 821                                  size_t bufsize, size_t *ret);
 822
 823                 rc = query_module(mp->name, QM_INFO, &info, sizeof(info),
 824                                   &crap);
 825                 if (rc < 0) {
 826                         if (errno != ENOENT)
 827                                 printf("query_module(%s) failed: %s\n",
 828                                        mp->name, strerror(errno));
 829                 } else {
 830                         printf("add-symbol-file %s%s%s/%s.o 0x%0lx\n", path,
 831                                path[0] ? "/" : "", mp->path, mp->name,
 832                                info.addr + sizeof(struct module));
 833                 }
 834         }
 835
 836         return 0;
 837 #endif // Headers are 2.6-only
 838 #endif // !HAVE_LINUX_VERSION_H
 839         return -EINVAL;
 840 }
 841
 842 static int jt_dbg_modules_2_5(int argc, char **argv)
 843 {
 844         struct mod_paths *mp;
 845         char *path = "";
 846         char *kernel = "linux";
 847         const char *proc = "/proc/modules";
 848         char modname[128], others[4096];
 849         long modaddr;
 850         int rc;
 851         FILE *file;
 852
 853         if (argc >= 2)
 854                 path = argv[1];
 855         if (argc == 3)
 856                 kernel = argv[2];
 857         if (argc > 3) {
 858                 printf("%s [path] [kernel]\n", argv[0]);
 859                 return 0;
 860         }
 861
 862         file = fopen(proc, "r");
 863         if (!file) {
 864                 printf("failed open %s: %s\n", proc, strerror(errno));
 865                 return 0;
 866         }
 867
 868         while ((rc = fscanf(file, "%s %s %s %s %s %lx\n",
 869                 modname, others, others, others, others, &modaddr)) == 6) {
 870                 for (mp = mod_paths; mp->name != NULL; mp++) {
 871                         if (!strcmp(mp->name, modname))
 872                                 break;
 873                 }
 874                 if (mp->name) {
 875                         printf("add-symbol-file %s%s%s/%s.o 0x%0lx\n", path,
 876                                path[0] ? "/" : "", mp->path, mp->name, modaddr);
 877                 }
 878         }
 879
 880         fclose(file);
 881         return 0;
 882 }
 883
 884 int jt_dbg_modules(int argc, char **argv)
 885 {
 886         int rc = 0;
 887         struct utsname sysinfo;
 888
 889         rc = uname(&sysinfo);
 890         if (rc) {
 891                 printf("uname() failed: %s\n", strerror(errno));
 892                 return 0;
 893         }
 894
 895         if (sysinfo.release[2] > '4') {
 896                 return jt_dbg_modules_2_5(argc, argv);
 897         } else {
 898                 return jt_dbg_modules_2_4(argc, argv);
 899         }
 900
 901         return 0;
 902 }
 903
 904 int jt_dbg_panic(int argc, char **argv)
 905 {
 906         int rc;
 907         struct libcfs_ioctl_data data;
 908
 909         if (argc != 1) {
 910                 fprintf(stderr, "usage: %s\n", argv[0]);
 911                 return 0;
 912         }
 913
 914         memset(&data, 0, sizeof(data));
 915         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 916                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 917                 return -1;
 918         }
 919
 920         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_PANIC, buf);
 921         if (rc) {
 922                 fprintf(stderr, "IOC_LIBCFS_PANIC failed: %s\n",
 923                         strerror(errno));
 924                 return -1;
 925         }
 926         return 0;
 927 }