lnet/utils/debug.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * GPL HEADER START
   5  *
   6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 only,
  10  * as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License version 2 for more details (a copy is included
  16  * in the LICENSE file that accompanied this code).
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * version 2 along with this program; If not, see
  20  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  21  *
  22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  23  * CA 95054 USA or visit www.sun.com if you need additional information or
  24  * have any questions.
  25  *
  26  * GPL HEADER END
  27  */
  28 /*
  29  * Copyright  2008 Sun Microsystems, Inc. All rights reserved
  30  * Use is subject to license terms.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  *
  36  * lnet/utils/debug.c
  37  * Some day I'll split all of this functionality into a cfs_debug module
  38  * of its own. That day is not today.
  39  */
  40
  41 #define __USE_FILE_OFFSET64
  42 #ifndef _GNU_SOURCE
  43 #define  _GNU_SOURCE
  44 #endif
  45
  46 #include <libcfs/libcfsutil.h>
  47 #include <lnet/lnetctl.h>
  48
  49
  50 static char rawbuf[8192];
  51 static char *buf = rawbuf;
  52 static int max = 8192;
  53 /*static int g_pfd = -1;*/
  54 static int subsystem_mask = ~0;
  55 static int debug_mask = ~0;
  56
  57 #define MAX_MARK_SIZE 256
  58
  59 static const char *libcfs_debug_subsystems[] =
  60         {"undefined", "mdc", "mds", "osc",
  61          "ost", "class", "log", "llite",
  62          "rpc", "mgmt", "lnet", "lnd",
  63          "pinger", "filter", "", "echo",
  64          "ldlm", "lov", "", "",
  65          "", "", "", "lmv",
  66          "", "sec", "gss", "",
  67          "mgc", "mgs", "fid", "fld", NULL};
  68 static const char *libcfs_debug_masks[] =
  69         {"trace", "inode", "super", "ext2",
  70          "malloc", "cache", "info", "ioctl",
  71          "neterror", "net", "warning", "buffs",
  72          "other", "dentry", "nettrace", "page",
  73          "dlmtrace", "error", "emerg", "ha",
  74          "rpctrace", "vfstrace", "reada", "mmap",
  75          "config", "console", "quota", "sec", NULL};
  76
  77 #ifdef __linux__
  78
  79 #define DAEMON_CTL_NAME         "/proc/sys/lnet/daemon_file"
  80 #define SUBSYS_DEBUG_CTL_NAME   "/proc/sys/lnet/subsystem_debug"
  81 #define DEBUG_CTL_NAME          "/proc/sys/lnet/debug"
  82 #define DUMP_KERNEL_CTL_NAME    "/proc/sys/lnet/dump_kernel"
  83
  84 static int
  85 dbg_open_ctlhandle(const char *str)
  86 {
  87         int fd;
  88         fd = open(str, O_WRONLY);
  89         if (fd < 0) {
  90                 fprintf(stderr, "open %s failed: %s\n", str,
  91                         strerror(errno));
  92                 return -1;
  93         }
  94         return fd;
  95 }
  96
  97 static void
  98 dbg_close_ctlhandle(int fd)
  99 {
 100         close(fd);
 101 }
 102
 103 static int
 104 dbg_write_cmd(int fd, char *str, int len)
 105 {
 106         int    rc  = write(fd, str, len);
 107
 108         return (rc == len ? 0 : 1);
 109 }
 110
 111 #elif defined(__DARWIN__)
 112
 113 #define DAEMON_CTL_NAME         "lnet.trace_daemon"
 114 #define SUBSYS_DEBUG_CTL_NAME   "lnet.subsystem_debug"
 115 #define DEBUG_CTL_NAME          "lnet.debug"
 116 #define DUMP_KERNEL_CTL_NAME    "lnet.trace_dumpkernel"
 117
 118 static char     sysctl_name[128];
 119 static int
 120 dbg_open_ctlhandle(const char *str)
 121 {
 122
 123         if (strlen(str)+1 > 128) {
 124                 fprintf(stderr, "sysctl name is too long: %s.\n", str);
 125                 return -1;
 126         }
 127         strcpy(sysctl_name, str);
 128
 129         return 0;
 130 }
 131
 132 static void
 133 dbg_close_ctlhandle(int fd)
 134 {
 135         sysctl_name[0] = '\0';
 136         return;
 137 }
 138
 139 static int
 140 dbg_write_cmd(int fd, char *str, int len)
 141 {
 142         int     rc;
 143
 144         rc = sysctlbyname(sysctl_name, NULL, NULL, str, len+1);
 145         if (rc != 0) {
 146                 fprintf(stderr, "sysctl %s with cmd (%s) error: %d\n",
 147                         sysctl_name, str, errno);
 148         }
 149         return (rc == 0 ? 0: 1);
 150 }
 151
 152 #elif defined(__WINNT__)
 153
 154 #define DAEMON_CTL_NAME         "/proc/sys/lnet/daemon_file"
 155 #define SUBSYS_DEBUG_CTL_NAME   "/proc/sys/lnet/subsystem_debug"
 156 #define DEBUG_CTL_NAME          "/proc/sys/lnet/debug"
 157 #define DUMP_KERNEL_CTL_NAME    "/proc/sys/lnet/dump_kernel"
 158
 159 static int
 160 dbg_open_ctlhandle(const char *str)
 161 {
 162         int fd;
 163         fd = cfs_proc_open((char *)str, (int)O_WRONLY);
 164         if (fd < 0) {
 165                 fprintf(stderr, "open %s failed: %s\n", str,
 166                         strerror(errno));
 167                 return -1;
 168         }
 169         return fd;
 170 }
 171
 172 static void
 173 dbg_close_ctlhandle(int fd)
 174 {
 175         cfs_proc_close(fd);
 176 }
 177
 178 static int
 179 dbg_write_cmd(int fd, char *str, int len)
 180 {
 181         int    rc  = cfs_proc_write(fd, str, len);
 182
 183         return (rc == len ? 0 : 1);
 184 }
 185
 186 #else
 187 #error - Unknown sysctl convention.
 188 #endif
 189
 190 static int do_debug_mask(char *name, int enable)
 191 {
 192         int found = 0, i;
 193
 194         for (i = 0; libcfs_debug_subsystems[i] != NULL; i++) {
 195                 if (strcasecmp(name, libcfs_debug_subsystems[i]) == 0 ||
 196                     strcasecmp(name, "all_subs") == 0) {
 197                         printf("%s output from subsystem \"%s\"\n",
 198                                 enable ? "Enabling" : "Disabling",
 199                                 libcfs_debug_subsystems[i]);
 200                         if (enable)
 201                                 subsystem_mask |= (1 << i);
 202                         else
 203                                 subsystem_mask &= ~(1 << i);
 204                         found = 1;
 205                 }
 206         }
 207         for (i = 0; libcfs_debug_masks[i] != NULL; i++) {
 208                 if (strcasecmp(name, libcfs_debug_masks[i]) == 0 ||
 209                     strcasecmp(name, "all_types") == 0) {
 210                         printf("%s output of type \"%s\"\n",
 211                                 enable ? "Enabling" : "Disabling",
 212                                 libcfs_debug_masks[i]);
 213                         if (enable)
 214                                 debug_mask |= (1 << i);
 215                         else
 216                                 debug_mask &= ~(1 << i);
 217                         found = 1;
 218                 }
 219         }
 220
 221         return found;
 222 }
 223
 224 int dbg_initialize(int argc, char **argv)
 225 {
 226         return 0;
 227 }
 228
 229 int jt_dbg_filter(int argc, char **argv)
 230 {
 231         int   i;
 232
 233         if (argc < 2) {
 234                 fprintf(stderr, "usage: %s <subsystem ID or debug mask>\n",
 235                         argv[0]);
 236                 return 0;
 237         }
 238
 239         for (i = 1; i < argc; i++)
 240                 if (!do_debug_mask(argv[i], 0))
 241                         fprintf(stderr, "Unknown subsystem or debug type: %s\n",
 242                                 argv[i]);
 243         return 0;
 244 }
 245
 246 int jt_dbg_show(int argc, char **argv)
 247 {
 248         int    i;
 249
 250         if (argc < 2) {
 251                 fprintf(stderr, "usage: %s <subsystem ID or debug mask>\n",
 252                         argv[0]);
 253                 return 0;
 254         }
 255
 256         for (i = 1; i < argc; i++)
 257                 if (!do_debug_mask(argv[i], 1))
 258                         fprintf(stderr, "Unknown subsystem or debug type: %s\n",
 259                                 argv[i]);
 260
 261         return 0;
 262 }
 263
 264 static int applymask(char* procpath, int value)
 265 {
 266         int rc;
 267         char buf[64];
 268         int len = snprintf(buf, 64, "%d", value);
 269
 270         int fd = dbg_open_ctlhandle(procpath);
 271         if (fd == -1) {
 272                 fprintf(stderr, "Unable to open %s: %s\n",
 273                         procpath, strerror(errno));
 274                 return fd;
 275         }
 276         rc = dbg_write_cmd(fd, buf, len+1);
 277         if (rc != 0) {
 278                 fprintf(stderr, "Write to %s failed: %s\n",
 279                         procpath, strerror(errno));
 280         }
 281
 282         dbg_close_ctlhandle(fd);
 283
 284         return rc;
 285 }
 286
 287 static void applymask_all(unsigned int subs_mask, unsigned int debug_mask)
 288 {
 289         if (!dump_filename) {
 290                 applymask(SUBSYS_DEBUG_CTL_NAME, subs_mask);
 291                 applymask(DEBUG_CTL_NAME, debug_mask);
 292         } else {
 293                 struct libcfs_debug_ioctl_data data;
 294
 295                 data.hdr.ioc_len = sizeof(data);
 296                 data.hdr.ioc_version = 0;
 297                 data.subs = subs_mask;
 298                 data.debug = debug_mask;
 299
 300                 dump(OBD_DEV_ID, LIBCFS_IOC_DEBUG_MASK, &data);
 301         }
 302         printf("Applied subsystem_debug=%d, debug=%d to /proc/sys/lnet\n",
 303                subs_mask, debug_mask);
 304 }
 305
 306 int jt_dbg_list(int argc, char **argv)
 307 {
 308         int i;
 309
 310         if (argc != 2) {
 311                 fprintf(stderr, "usage: %s <subs || types>\n", argv[0]);
 312                 return 0;
 313         }
 314
 315         if (strcasecmp(argv[1], "subs") == 0) {
 316                 printf("Subsystems: all_subs");
 317                 for (i = 0; libcfs_debug_subsystems[i] != NULL; i++)
 318                         if (libcfs_debug_subsystems[i][0])
 319                                 printf(", %s", libcfs_debug_subsystems[i]);
 320                 printf("\n");
 321         } else if (strcasecmp(argv[1], "types") == 0) {
 322                 printf("Types: all_types");
 323                 for (i = 0; libcfs_debug_masks[i] != NULL; i++)
 324                         printf(", %s", libcfs_debug_masks[i]);
 325                 printf("\n");
 326         } else if (strcasecmp(argv[1], "applymasks") == 0) {
 327                 applymask_all(subsystem_mask, debug_mask);
 328         }
 329         return 0;
 330 }
 331
 332 /* all strings nul-terminated; only the struct and hdr need to be freed */
 333 struct dbg_line {
 334         struct ptldebug_header *hdr;
 335         char *file;
 336         char *fn;
 337         char *text;
 338 };
 339
 340 static int cmp_rec(const void *p1, const void *p2)
 341 {
 342         struct dbg_line *d1 = *(struct dbg_line **)p1;
 343         struct dbg_line *d2 = *(struct dbg_line **)p2;
 344
 345         if (d1->hdr->ph_sec < d2->hdr->ph_sec)
 346                 return -1;
 347         if (d1->hdr->ph_sec == d2->hdr->ph_sec &&
 348             d1->hdr->ph_usec < d2->hdr->ph_usec)
 349                 return -1;
 350         if (d1->hdr->ph_sec == d2->hdr->ph_sec &&
 351             d1->hdr->ph_usec == d2->hdr->ph_usec)
 352                 return 0;
 353         return 1;
 354 }
 355
 356 static void print_rec(struct dbg_line **linev, int used, FILE *out)
 357 {
 358         int i;
 359
 360         for (i = 0; i < used; i++) {
 361                 struct dbg_line *line = linev[i];
 362                 struct ptldebug_header *hdr = line->hdr;
 363
 364                 fprintf(out, "%08x:%08x:%u:%u." LPU64 ":%u:%u:%u:(%s:%u:%s()) %s",
 365                         hdr->ph_subsys, hdr->ph_mask, hdr->ph_cpu_id,
 366                         hdr->ph_sec, (unsigned long long)hdr->ph_usec,
 367                         hdr->ph_stack, hdr->ph_pid, hdr->ph_extern_pid,
 368                         line->file, hdr->ph_line_num, line->fn, line->text);
 369                 free(line->hdr);
 370                 free(line);
 371         }
 372         free(linev);
 373 }
 374
 375 static int add_rec(struct dbg_line *line, struct dbg_line ***linevp, int *lenp,
 376                    int used)
 377 {
 378         struct dbg_line **linev = *linevp;
 379
 380         if (used == *lenp) {
 381                 int nlen = *lenp + 512;
 382                 int nsize = nlen * sizeof(struct dbg_line *);
 383
 384                 linev = *linevp ? realloc(*linevp, nsize) : malloc(nsize);
 385                 if (!linev)
 386                         return 0;
 387                 *linevp = linev;
 388                 *lenp = nlen;
 389         }
 390         linev[used] = line;
 391         return 1;
 392 }
 393
 394 static int parse_buffer(FILE *in, FILE *out)
 395 {
 396         struct dbg_line *line;
 397         struct ptldebug_header *hdr;
 398         char buf[4097], *p;
 399         int rc;
 400         unsigned long dropped = 0, kept = 0;
 401         struct dbg_line **linev = NULL;
 402         int linev_len = 0;
 403
 404         while (1) {
 405                 rc = fread(buf, sizeof(hdr->ph_len) + sizeof(hdr->ph_flags), 1, in);
 406                 if (rc <= 0)
 407                         break;
 408
 409                 hdr = (void *)buf;
 410                 if (hdr->ph_len == 0)
 411                         break;
 412                 if (hdr->ph_len > 4094) {
 413                         fprintf(stderr, "unexpected large record: %d bytes.  "
 414                                 "aborting.\n",
 415                                 hdr->ph_len);
 416                         break;
 417                 }
 418
 419                 rc = fread(buf + sizeof(hdr->ph_len) + sizeof(hdr->ph_flags), 1,
 420                            hdr->ph_len - sizeof(hdr->ph_len) - sizeof(hdr->ph_flags), in);
 421                 if (rc <= 0)
 422                         break;
 423
 424                 if ((hdr->ph_subsys && !(subsystem_mask & hdr->ph_subsys)) ||
 425                     (hdr->ph_mask   && !(debug_mask & hdr->ph_mask))) {
 426                         dropped++;
 427                         continue;
 428                 }
 429
 430                 line = malloc(sizeof(*line));
 431                 if (line == NULL) {
 432                         fprintf(stderr, "malloc failed; printing accumulated "
 433                                 "records and exiting.\n");
 434                         break;
 435                 }
 436
 437                 line->hdr = malloc(hdr->ph_len + 1);
 438                 if (line->hdr == NULL) {
 439                         free(line);
 440                         fprintf(stderr, "malloc failed; printing accumulated "
 441                                 "records and exiting.\n");
 442                         break;
 443                 }
 444
 445                 p = (void *)line->hdr;
 446                 memcpy(line->hdr, buf, hdr->ph_len);
 447                 p[hdr->ph_len] = '\0';
 448
 449                 p += sizeof(*hdr);
 450                 line->file = p;
 451                 p += strlen(line->file) + 1;
 452                 line->fn = p;
 453                 p += strlen(line->fn) + 1;
 454                 line->text = p;
 455
 456                 if (!add_rec(line, &linev, &linev_len, kept)) {
 457                         fprintf(stderr, "malloc failed; printing accumulated "
 458                                 "records and exiting.\n");
 459                         break;
 460                 }
 461                 kept++;
 462         }
 463
 464         if (linev) {
 465                 qsort(linev, kept, sizeof(struct dbg_line *), cmp_rec);
 466                 print_rec(linev, kept, out);
 467         }
 468
 469         printf("Debug log: %lu lines, %lu kept, %lu dropped.\n",
 470                 dropped + kept, kept, dropped);
 471         return 0;
 472 }
 473
 474 int jt_dbg_debug_kernel(int argc, char **argv)
 475 {
 476         char filename[4096];
 477         struct stat st;
 478         int rc, raw = 0, fd;
 479         FILE *in, *out = stdout;
 480
 481         if (argc > 3) {
 482                 fprintf(stderr, "usage: %s [file] [raw]\n", argv[0]);
 483                 return 0;
 484         }
 485
 486         if (argc > 2) {
 487                 raw = atoi(argv[2]);
 488         } else if (argc > 1 && (argv[1][0] == '0' || argv[1][0] == '1')) {
 489                 raw = atoi(argv[1]);
 490                 argc--;
 491         }
 492
 493         /* If we are dumping raw (which means no conversion step to ASCII)
 494          * then dump directly to any supplied filename, otherwise this is
 495          * just a temp file and we dump to the real file at convert time. */
 496         if (argc > 1 && raw)
 497                 strcpy(filename, argv[1]);
 498         else
 499                 sprintf(filename, "%s"CFS_TIME_T".%u",
 500                         DEBUG_FILE_PATH_DEFAULT, time(NULL), getpid());
 501
 502         if (stat(filename, &st) == 0 && S_ISREG(st.st_mode))
 503                 unlink(filename);
 504
 505         fd = dbg_open_ctlhandle(DUMP_KERNEL_CTL_NAME);
 506         if (fd < 0) {
 507                 fprintf(stderr, "open(dump_kernel) failed: %s\n",
 508                         strerror(errno));
 509                 return 1;
 510         }
 511
 512         rc = dbg_write_cmd(fd, filename, strlen(filename));
 513         if (rc != 0) {
 514                 fprintf(stderr, "write(%s) failed: %s\n", filename,
 515                         strerror(errno));
 516                 dbg_close_ctlhandle(fd);
 517                 return 1;
 518         }
 519         dbg_close_ctlhandle(fd);
 520
 521         if (raw)
 522                 return 0;
 523
 524         in = fopen(filename, "r");
 525         if (in == NULL) {
 526                 if (errno == ENOENT) /* no dump file created */
 527                         return 0;
 528
 529                 fprintf(stderr, "fopen(%s) failed: %s\n", filename,
 530                         strerror(errno));
 531                 return 1;
 532         }
 533         if (argc > 1) {
 534                 out = fopen(argv[1], "w");
 535                 if (out == NULL) {
 536                         fprintf(stderr, "fopen(%s) failed: %s\n", argv[1],
 537                                 strerror(errno));
 538                         fclose(in);
 539                         return 1;
 540                 }
 541         }
 542
 543         rc = parse_buffer(in, out);
 544         fclose(in);
 545         if (argc > 1)
 546                 fclose(out);
 547         if (rc) {
 548                 fprintf(stderr, "parse_buffer failed; leaving tmp file %s "
 549                         "behind.\n", filename);
 550         } else {
 551                 rc = unlink(filename);
 552                 if (rc)
 553                         fprintf(stderr, "dumped successfully, but couldn't "
 554                                 "unlink tmp file %s: %s\n", filename,
 555                                 strerror(errno));
 556         }
 557         return rc;
 558 }
 559
 560 int jt_dbg_debug_file(int argc, char **argv)
 561 {
 562         int    fdin;
 563         int    fdout;
 564         FILE  *in;
 565         FILE  *out = stdout;
 566         int    rc;
 567
 568         if (argc > 3 || argc < 2) {
 569                 fprintf(stderr, "usage: %s <input> [output]\n", argv[0]);
 570                 return 0;
 571         }
 572
 573         fdin = open(argv[1], O_RDONLY | O_LARGEFILE);
 574         if (fdin == -1) {
 575                 fprintf(stderr, "open(%s) failed: %s\n", argv[1],
 576                         strerror(errno));
 577                 return 1;
 578         }
 579         in = fdopen(fdin, "r");
 580         if (in == NULL) {
 581                 fprintf(stderr, "fopen(%s) failed: %s\n", argv[1],
 582                         strerror(errno));
 583                 close(fdin);
 584                 return 1;
 585         }
 586         if (argc > 2) {
 587                 fdout = open(argv[2],
 588                              O_CREAT | O_TRUNC | O_WRONLY | O_LARGEFILE,
 589                              0600);
 590                 if (fdout == -1) {
 591                         fprintf(stderr, "open(%s) failed: %s\n", argv[2],
 592                                 strerror(errno));
 593                         fclose(in);
 594                         return 1;
 595                 }
 596                 out = fdopen(fdout, "w");
 597                 if (out == NULL) {
 598                         fprintf(stderr, "fopen(%s) failed: %s\n", argv[2],
 599                                 strerror(errno));
 600                         fclose(in);
 601                         close(fdout);
 602                         return 1;
 603                 }
 604         }
 605
 606         rc = parse_buffer(in, out);
 607
 608         fclose(in);
 609         if (out != stdout)
 610                 fclose(out);
 611
 612         return rc;
 613 }
 614
 615 const char debug_daemon_usage[] = "usage: %s {start file [MB]|stop}\n";
 616
 617 int jt_dbg_debug_daemon(int argc, char **argv)
 618 {
 619         int  rc;
 620         int  fd;
 621
 622         if (argc <= 1) {
 623                 fprintf(stderr, debug_daemon_usage, argv[0]);
 624                 return 1;
 625         }
 626
 627         fd = dbg_open_ctlhandle(DAEMON_CTL_NAME);
 628         if (fd < 0)
 629                 return -1;
 630
 631         rc = -1;
 632         if (strcasecmp(argv[1], "start") == 0) {
 633              if (argc < 3 || argc > 4 ||
 634                     (argc == 4 && strlen(argv[3]) > 5)) {
 635                         fprintf(stderr, debug_daemon_usage, argv[0]);
 636                         goto out;
 637                 }
 638                 if (argc == 4) {
 639                         char       buf[12];
 640                         const long min_size = 10;
 641                         const long max_size = 20480;
 642                         long       size;
 643                         char      *end;
 644
 645                         size = strtoul(argv[3], &end, 0);
 646                         if (size < min_size ||
 647                             size > max_size ||
 648                             *end != 0) {
 649                                 fprintf(stderr, "size %s invalid, must be in "
 650                                         "the range %ld-%ld MB\n", argv[3],
 651                                         min_size, max_size);
 652                                 goto out;
 653                         }
 654                         snprintf(buf, sizeof(buf), "size=%ld", size);
 655                         rc = dbg_write_cmd(fd, buf, strlen(buf));
 656
 657                         if (rc != 0) {
 658                                 fprintf(stderr, "set %s failed: %s\n",
 659                                         buf, strerror(errno));
 660                                 goto out;
 661                         }
 662                 }
 663
 664                 rc = dbg_write_cmd(fd, argv[2], strlen(argv[2]));
 665                 if (rc != 0) {
 666                         fprintf(stderr, "start debug_daemon on %s failed: %s\n",
 667                                 argv[2], strerror(errno));
 668                         goto out;
 669                 }
 670                 rc = 0;
 671                 goto out;
 672         }
 673         if (strcasecmp(argv[1], "stop") == 0) {
 674                 rc = dbg_write_cmd(fd, "stop", 4);
 675                 if (rc != 0) {
 676                         fprintf(stderr, "stopping debug_daemon failed: %s\n",
 677                                 strerror(errno));
 678                         goto out;
 679                 }
 680
 681                 rc = 0;
 682                 goto out;
 683         }
 684
 685         fprintf(stderr, debug_daemon_usage, argv[0]);
 686         rc = -1;
 687 out:
 688         dbg_close_ctlhandle(fd);
 689         return rc;
 690 }
 691
 692 int jt_dbg_clear_debug_buf(int argc, char **argv)
 693 {
 694         int rc;
 695         struct libcfs_ioctl_data data;
 696
 697         if (argc != 1) {
 698                 fprintf(stderr, "usage: %s\n", argv[0]);
 699                 return 0;
 700         }
 701
 702         memset(&data, 0, sizeof(data));
 703         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 704                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 705                 return -1;
 706         }
 707
 708         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_CLEAR_DEBUG, buf);
 709         if (rc) {
 710                 fprintf(stderr, "IOC_LIBCFS_CLEAR_DEBUG failed: %s\n",
 711                         strerror(errno));
 712                 return -1;
 713         }
 714         return 0;
 715 }
 716
 717 int jt_dbg_mark_debug_buf(int argc, char **argv)
 718 {
 719         static char scratch[MAX_MARK_SIZE] = { '\0' };
 720         int rc, max_size = MAX_MARK_SIZE-1;
 721         struct libcfs_ioctl_data data = { 0 };
 722         char *text;
 723         time_t now = time(NULL);
 724
 725         if (argc > 1) {
 726                 int count;
 727                 text = scratch;
 728                 strncpy(text, argv[1], max_size);
 729                 max_size-=strlen(argv[1]);
 730                 for (count = 2; (count < argc) && (max_size > 0); count++){
 731                         strncat(text, " ", max_size);
 732                         max_size -= 1;
 733                         strncat(text, argv[count], max_size);
 734                         max_size -= strlen(argv[count]);
 735                 }
 736         } else {
 737                 text = ctime(&now);
 738         }
 739
 740         data.ioc_inllen1 = strlen(text) + 1;
 741         data.ioc_inlbuf1 = text;
 742         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 743                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 744                 return -1;
 745         }
 746
 747         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_MARK_DEBUG, buf);
 748         if (rc) {
 749                 fprintf(stderr, "IOC_LIBCFS_MARK_DEBUG failed: %s\n",
 750                         strerror(errno));
 751                 return -1;
 752         }
 753         return 0;
 754 }
 755
 756 static struct mod_paths {
 757         char *name, *path;
 758 } mod_paths[] = {
 759         {"libcfs", "libcfs/libcfs"},
 760         {"lnet", "lnet/lnet"},
 761         {"kciblnd", "lnet/klnds/ciblnd"},
 762         {"kgmlnd", "lnet/klnds/gmlnd"},
 763         {"kmxlnd", "lnet/klnds/mxlnd"},
 764         {"kiiblnd", "lnet/klnds/iiblnd"},
 765         {"ko2iblnd", "lnet/klnds/o2iblnd"},
 766         {"kopeniblnd", "lnet/klnds/openiblnd"},
 767         {"kptllnd", "lnet/klnds/ptllnd"},
 768         {"kqswlnd", "lnet/klnds/qswlnd"},
 769         {"kralnd", "lnet/klnds/ralnd"},
 770         {"ksocklnd", "lnet/klnds/socklnd"},
 771         {"ktdilnd", "lnet/klnds/tdilnd"},
 772         {"kviblnd", "lnet/klnds/viblnd"},
 773         {"lvfs", "lustre/lvfs"},
 774         {"obdclass", "lustre/obdclass"},
 775         {"llog_test", "lustre/obdclass"},
 776         {"ptlrpc_gss", "lustre/ptlrpc/gss"},
 777         {"ptlrpc", "lustre/ptlrpc"},
 778         {"gks", "lustre/sec/gks"},
 779         {"gkc", "lustre/sec/gks"},
 780         {"ost", "lustre/ost"},
 781         {"osc", "lustre/osc"},
 782         {"mds", "lustre/mds"},
 783         {"mdc", "lustre/mdc"},
 784         {"llite", "lustre/llite"},
 785         {"lustre", "lustre/llite"},
 786         {"llite_lloop", "lustre/llite"},
 787         {"ldiskfs", "ldiskfs/ldiskfs"},
 788         {"smfs", "lustre/smfs"},
 789         {"obdecho", "lustre/obdecho"},
 790         {"ldlm", "lustre/ldlm"},
 791         {"obdfilter", "lustre/obdfilter"},
 792         {"lov", "lustre/lov"},
 793         {"lmv", "lustre/lmv"},
 794         {"fsfilt_ext3", "lustre/lvfs"},
 795         {"fsfilt_reiserfs", "lustre/lvfs"},
 796         {"fsfilt_smfs", "lustre/lvfs"},
 797         {"fsfilt_ldiskfs", "lustre/lvfs"},
 798         {"mds_ext3", "lustre/mds"},
 799         {"cobd", "lustre/cobd"},
 800         {"cmobd", "lustre/cmobd"},
 801         {"lquota", "lustre/quota"},
 802         {"mgs", "lustre/mgs"},
 803         {"mgc", "lustre/mgc"},
 804         {"mdt", "lustre/mdt"},
 805         {"mdd", "lustre/mdd"},
 806         {"osd", "lustre/osd"},
 807         {"cmm", "lustre/cmm"},
 808         {"fid", "lustre/fid"},
 809         {"fld", "lustre/fld"},
 810         {NULL, NULL}
 811 };
 812
 813 static int jt_dbg_modules_2_4(int argc, char **argv)
 814 {
 815         return -EINVAL;
 816 }
 817
 818 static int jt_dbg_modules_2_5(int argc, char **argv)
 819 {
 820         struct mod_paths *mp;
 821         char *path = "";
 822         char *kernel = "linux";
 823         const char *proc = "/proc/modules";
 824         char modname[128], buf[4096];
 825         long modaddr;
 826         FILE *file;
 827
 828         if (argc >= 2)
 829                 path = argv[1];
 830         if (argc == 3)
 831                 kernel = argv[2];
 832         if (argc > 3) {
 833                 printf("%s [path] [kernel]\n", argv[0]);
 834                 return 0;
 835         }
 836
 837         file = fopen(proc, "r");
 838         if (!file) {
 839                 printf("failed open %s: %s\n", proc, strerror(errno));
 840                 return 0;
 841         }
 842
 843         while (fgets(buf, sizeof(buf), file) != NULL) {
 844                 if (sscanf(buf, "%s %*s %*s %*s %*s %lx", modname, &modaddr) == 2) {
 845                         for (mp = mod_paths; mp->name != NULL; mp++) {
 846                                 if (!strcmp(mp->name, modname))
 847                                         break;
 848                         }
 849                         if (mp->name) {
 850                                 printf("add-symbol-file %s%s%s/%s.o 0x%0lx\n",
 851                                        path, path[0] ? "/" : "",
 852                                        mp->path, mp->name, modaddr);
 853                         }
 854                 }
 855         }
 856
 857         fclose(file);
 858         return 0;
 859 }
 860
 861 int jt_dbg_modules(int argc, char **argv)
 862 {
 863         int rc = 0;
 864         struct utsname sysinfo;
 865
 866         rc = uname(&sysinfo);
 867         if (rc) {
 868                 printf("uname() failed: %s\n", strerror(errno));
 869                 return 0;
 870         }
 871
 872         if (sysinfo.release[2] > '4') {
 873                 return jt_dbg_modules_2_5(argc, argv);
 874         } else {
 875                 return jt_dbg_modules_2_4(argc, argv);
 876         }
 877
 878         return 0;
 879 }
 880
 881 int jt_dbg_panic(int argc, char **argv)
 882 {
 883         int rc;
 884         struct libcfs_ioctl_data data;
 885
 886         if (argc != 1) {
 887                 fprintf(stderr, "usage: %s\n", argv[0]);
 888                 return 0;
 889         }
 890
 891         memset(&data, 0, sizeof(data));
 892         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 893                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 894                 return -1;
 895         }
 896
 897         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_PANIC, buf);
 898         if (rc) {
 899                 fprintf(stderr, "IOC_LIBCFS_PANIC failed: %s\n",
 900                         strerror(errno));
 901                 return -1;
 902         }
 903         return 0;
 904 }