lnet/utils/debug.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  19  *
  20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21  * CA 95054 USA or visit www.sun.com if you need additional information or
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2011, 2014, Intel Corporation.
  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/libcfs.h>
  47 #include <libcfs/util/ioctl.h>
  48 #include <lnet/lnetctl.h>
  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[] = LIBCFS_DEBUG_SUBSYS_NAMES;
  60 static const char *libcfs_debug_masks[] = LIBCFS_DEBUG_MASKS_NAMES;
  61
  62 #define DAEMON_CTL_NAME         "/proc/sys/lnet/daemon_file"
  63 #define SUBSYS_DEBUG_CTL_NAME   "/proc/sys/lnet/subsystem_debug"
  64 #define DEBUG_CTL_NAME          "/proc/sys/lnet/debug"
  65 #define DUMP_KERNEL_CTL_NAME    "/proc/sys/lnet/dump_kernel"
  66
  67 static int
  68 dbg_open_ctlhandle(const char *str)
  69 {
  70         int fd;
  71         fd = open(str, O_WRONLY);
  72         if (fd < 0) {
  73                 fprintf(stderr, "open %s failed: %s\n", str,
  74                         strerror(errno));
  75                 return -1;
  76         }
  77         return fd;
  78 }
  79
  80 static void
  81 dbg_close_ctlhandle(int fd)
  82 {
  83         close(fd);
  84 }
  85
  86 static int
  87 dbg_write_cmd(int fd, char *str, int len)
  88 {
  89         int rc = write(fd, str, len);
  90
  91         return (rc == len ? 0 : 1);
  92 }
  93
  94
  95 static int do_debug_mask(char *name, int enable)
  96 {
  97         int found = 0;
  98         int i;
  99
 100         for (i = 0; libcfs_debug_subsystems[i] != NULL; i++) {
 101                 if (strcasecmp(name, libcfs_debug_subsystems[i]) == 0 ||
 102                     strcasecmp(name, "all_subs") == 0) {
 103                         printf("%s output from subsystem \"%s\"\n",
 104                                 enable ? "Enabling" : "Disabling",
 105                                 libcfs_debug_subsystems[i]);
 106                         if (enable)
 107                                 subsystem_mask |= (1 << i);
 108                         else
 109                                 subsystem_mask &= ~(1 << i);
 110                         found = 1;
 111                 }
 112         }
 113         for (i = 0; libcfs_debug_masks[i] != NULL; i++) {
 114                 if (strcasecmp(name, libcfs_debug_masks[i]) == 0 ||
 115                     strcasecmp(name, "all_types") == 0) {
 116                         printf("%s output of type \"%s\"\n",
 117                                 enable ? "Enabling" : "Disabling",
 118                                 libcfs_debug_masks[i]);
 119                         if (enable)
 120                                 debug_mask |= (1 << i);
 121                         else
 122                                 debug_mask &= ~(1 << i);
 123                         found = 1;
 124                 }
 125         }
 126
 127         return found;
 128 }
 129
 130 int dbg_initialize(int argc, char **argv)
 131 {
 132         return 0;
 133 }
 134
 135 int jt_dbg_filter(int argc, char **argv)
 136 {
 137         int i;
 138
 139         if (argc < 2) {
 140                 fprintf(stderr, "usage: %s <subsystem ID or debug mask>\n",
 141                         argv[0]);
 142                 return 0;
 143         }
 144
 145         for (i = 1; i < argc; i++)
 146                 if (!do_debug_mask(argv[i], 0))
 147                         fprintf(stderr, "Unknown subsystem or debug type: %s\n",
 148                                 argv[i]);
 149         return 0;
 150 }
 151
 152 int jt_dbg_show(int argc, char **argv)
 153 {
 154         int i;
 155
 156         if (argc < 2) {
 157                 fprintf(stderr, "usage: %s <subsystem ID or debug mask>\n",
 158                         argv[0]);
 159                 return 0;
 160         }
 161
 162         for (i = 1; i < argc; i++)
 163                 if (!do_debug_mask(argv[i], 1))
 164                         fprintf(stderr, "Unknown subsystem or debug type: %s\n",
 165                                 argv[i]);
 166
 167         return 0;
 168 }
 169
 170 static int applymask(char* procpath, int value)
 171 {
 172         int     rc;
 173         char    buf[64];
 174         int     len = snprintf(buf, 64, "%d", value);
 175
 176         int fd = dbg_open_ctlhandle(procpath);
 177         if (fd == -1) {
 178                 fprintf(stderr, "Unable to open %s: %s\n",
 179                         procpath, strerror(errno));
 180                 return fd;
 181         }
 182         rc = dbg_write_cmd(fd, buf, len+1);
 183         if (rc != 0) {
 184                 fprintf(stderr, "Write to %s failed: %s\n",
 185                         procpath, strerror(errno));
 186         }
 187
 188         dbg_close_ctlhandle(fd);
 189
 190         return rc;
 191 }
 192
 193 static void applymask_all(unsigned int subs_mask, unsigned int debug_mask)
 194 {
 195         applymask(SUBSYS_DEBUG_CTL_NAME, subs_mask);
 196         applymask(DEBUG_CTL_NAME, debug_mask);
 197         printf("Applied subsystem_debug=%d, debug=%d to /proc/sys/lnet\n",
 198                subs_mask, debug_mask);
 199 }
 200
 201 int jt_dbg_list(int argc, char **argv)
 202 {
 203         int i;
 204
 205         if (argc != 2) {
 206                 fprintf(stderr, "usage: %s <subs || types>\n", argv[0]);
 207                 return 0;
 208         }
 209
 210         if (strcasecmp(argv[1], "subs") == 0) {
 211                 printf("Subsystems: all_subs");
 212                 for (i = 0; libcfs_debug_subsystems[i] != NULL; i++)
 213                         if (libcfs_debug_subsystems[i][0])
 214                                 printf(", %s", libcfs_debug_subsystems[i]);
 215                 printf("\n");
 216         } else if (strcasecmp(argv[1], "types") == 0) {
 217                 printf("Types: all_types");
 218                 for (i = 0; libcfs_debug_masks[i] != NULL; i++)
 219                         printf(", %s", libcfs_debug_masks[i]);
 220                 printf("\n");
 221         } else if (strcasecmp(argv[1], "applymasks") == 0) {
 222                 applymask_all(subsystem_mask, debug_mask);
 223         }
 224         return 0;
 225 }
 226
 227 /* all strings nul-terminated; only the struct and hdr need to be freed */
 228 struct dbg_line {
 229         struct ptldebug_header *hdr;
 230         char                   *file;
 231         char                   *fn;
 232         char                   *text;
 233 };
 234
 235 static int cmp_rec(const void *p1, const void *p2)
 236 {
 237         struct dbg_line *d1 = *(struct dbg_line **)p1;
 238         struct dbg_line *d2 = *(struct dbg_line **)p2;
 239
 240         if (d1->hdr->ph_sec < d2->hdr->ph_sec)
 241                 return -1;
 242         if (d1->hdr->ph_sec == d2->hdr->ph_sec &&
 243             d1->hdr->ph_usec < d2->hdr->ph_usec)
 244                 return -1;
 245         if (d1->hdr->ph_sec == d2->hdr->ph_sec &&
 246             d1->hdr->ph_usec == d2->hdr->ph_usec)
 247                 return 0;
 248         return 1;
 249 }
 250
 251 static void print_rec(struct dbg_line ***linevp, int used, int fdout)
 252 {
 253         struct dbg_line **linev = *linevp;
 254         int               i;
 255
 256         qsort(linev, used, sizeof(struct dbg_line *), cmp_rec);
 257         for (i = 0; i < used; i++) {
 258                 struct dbg_line         *line = linev[i];
 259                 struct ptldebug_header  *hdr = line->hdr;
 260                 char                     out[4097];
 261                 char                    *buf = out;
 262                 int                      bytes;
 263                 ssize_t                  bytes_written;
 264
 265                 bytes = snprintf(out, sizeof(out),
 266                                 "%08x:%08x:%u.%u%s:%u.%06llu:%u:%u:%u:"
 267                                 "(%s:%u:%s()) %s",
 268                                 hdr->ph_subsys, hdr->ph_mask,
 269                                 hdr->ph_cpu_id, hdr->ph_type,
 270                                 hdr->ph_flags & PH_FLAG_FIRST_RECORD ? "F" : "",
 271                                 hdr->ph_sec, (unsigned long long)hdr->ph_usec,
 272                                 hdr->ph_stack, hdr->ph_pid, hdr->ph_extern_pid,
 273                                 line->file, hdr->ph_line_num, line->fn,
 274                                 line->text);
 275                 while (bytes > 0) {
 276                         bytes_written = write(fdout, buf, bytes);
 277                         if (bytes_written <= 0)
 278                                 break;
 279                         bytes -= bytes_written;
 280                         buf += bytes_written;
 281                 }
 282                 free(line->hdr);
 283                 free(line);
 284         }
 285         free(linev);
 286         *linevp = NULL;
 287 }
 288
 289 static int add_rec(struct dbg_line *line, struct dbg_line ***linevp, int *lenp,
 290                    int used)
 291 {
 292         struct dbg_line **linev = *linevp;
 293
 294         if (used == *lenp) {
 295                 int nlen = *lenp + 4096;
 296                 int nsize = nlen * sizeof(struct dbg_line *);
 297
 298                 linev = realloc(*linevp, nsize);
 299                 if (!linev)
 300                         return -ENOMEM;
 301
 302                 *linevp = linev;
 303                 *lenp = nlen;
 304         }
 305         linev[used] = line;
 306
 307         return 0;
 308 }
 309
 310 static void dump_hdr(unsigned long long offset, struct ptldebug_header *hdr)
 311 {
 312         fprintf(stderr, "badly-formed record at offset = %llu\n", offset);
 313         fprintf(stderr, "  len = %u\n", hdr->ph_len);
 314         fprintf(stderr, "  flags = %x\n", hdr->ph_flags);
 315         fprintf(stderr, "  subsystem = %x\n", hdr->ph_subsys);
 316         fprintf(stderr, "  mask = %x\n", hdr->ph_mask);
 317         fprintf(stderr, "  cpu_id = %u\n", hdr->ph_cpu_id);
 318         fprintf(stderr, "  type = %u\n", hdr->ph_type);
 319         fprintf(stderr, "  seconds = %u\n", hdr->ph_sec);
 320         fprintf(stderr, "  microseconds = %lu\n", (long)hdr->ph_usec);
 321         fprintf(stderr, "  stack = %u\n", hdr->ph_stack);
 322         fprintf(stderr, "  pid = %u\n", hdr->ph_pid);
 323         fprintf(stderr, "  host pid = %u\n", hdr->ph_extern_pid);
 324         fprintf(stderr, "  line number = %u\n", hdr->ph_line_num);
 325 }
 326
 327 #define HDR_SIZE sizeof(*hdr)
 328
 329 static int parse_buffer(int fdin, int fdout)
 330 {
 331         struct dbg_line         *line;
 332         struct ptldebug_header  *hdr;
 333         char                     buf[4097];
 334         char                    *ptr;
 335         unsigned long            dropped = 0;
 336         unsigned long            kept = 0;
 337         unsigned long            bad = 0;
 338         struct dbg_line         **linev = NULL;
 339         int                      linev_len = 0;
 340         int                      rc;
 341
 342         hdr = (void *)buf;
 343
 344         while (1) {
 345                 int first_bad = 1;
 346                 int count;
 347
 348                 count = HDR_SIZE;
 349                 ptr = buf;
 350 readhdr:
 351                 rc = read(fdin, ptr, count);
 352                 if (rc <= 0)
 353                         goto print;
 354
 355                 ptr += rc;
 356                 count -= rc;
 357                 if (count > 0)
 358                         goto readhdr;
 359
 360                 if (hdr->ph_len > 4094 ||       /* is this header bogus? */
 361                     hdr->ph_stack > 65536 ||
 362                     hdr->ph_sec < (1 << 30) ||
 363                     hdr->ph_usec > 1000000000 ||
 364                     hdr->ph_line_num > 65536) {
 365                         if (first_bad)
 366                                 dump_hdr(lseek(fdin, 0, SEEK_CUR), hdr);
 367                         bad += first_bad;
 368                         first_bad = 0;
 369
 370                         /* try to restart on next line */
 371                         while (count < HDR_SIZE && buf[count] != '\n')
 372                                 count++;
 373                         if (buf[count] == '\n')
 374                                 count++; /* move past '\n' */
 375                         if (HDR_SIZE - count > 0) {
 376                                 int left = HDR_SIZE - count;
 377
 378                                 memmove(buf, buf + count, left);
 379                                 ptr = buf + left;
 380
 381                                 goto readhdr;
 382                         }
 383
 384                         continue;
 385                 }
 386
 387                 if (hdr->ph_len == 0)
 388                         continue;
 389
 390                 count = hdr->ph_len - HDR_SIZE;
 391 readmore:
 392                 rc = read(fdin, ptr, count);
 393                 if (rc <= 0)
 394                         break;
 395
 396                 ptr += rc;
 397                 count -= rc;
 398                 if (count > 0)
 399                         goto readmore;
 400
 401                 first_bad = 1;
 402
 403                 if ((hdr->ph_subsys && !(subsystem_mask & hdr->ph_subsys)) ||
 404                     (hdr->ph_mask && !(debug_mask & hdr->ph_mask))) {
 405                         dropped++;
 406                         continue;
 407                 }
 408
 409 retry_alloc:
 410                 line = malloc(sizeof(*line));
 411                 if (line == NULL) {
 412                         if (linev) {
 413                                 fprintf(stderr, "error: line malloc(%u): "
 414                                         "printing accumulated records\n",
 415                                         (unsigned int)sizeof(*line));
 416                                 print_rec(&linev, kept, fdout);
 417
 418                                 goto retry_alloc;
 419                         }
 420                         fprintf(stderr, "error: line malloc(%u): exiting\n",
 421                                 (unsigned int)sizeof(*line));
 422                         break;
 423                 }
 424
 425                 line->hdr = malloc(hdr->ph_len + 1);
 426                 if (line->hdr == NULL) {
 427                         free(line);
 428                         if (linev) {
 429                                 fprintf(stderr, "error: hdr malloc(%u): "
 430                                         "printing accumulated records\n",
 431                                         hdr->ph_len + 1);
 432                                 print_rec(&linev, kept, fdout);
 433
 434                                 goto retry_alloc;
 435                         }
 436                         fprintf(stderr, "error: hdr malloc(%u): exiting\n",
 437                                         hdr->ph_len + 1);
 438                         break;
 439                 }
 440
 441                 ptr = (void *)line->hdr;
 442                 memcpy(line->hdr, buf, hdr->ph_len);
 443                 ptr[hdr->ph_len] = '\0';
 444
 445                 ptr += sizeof(*hdr);
 446                 line->file = ptr;
 447                 ptr += strlen(line->file) + 1;
 448                 line->fn = ptr;
 449                 ptr += strlen(line->fn) + 1;
 450                 line->text = ptr;
 451
 452 retry_add:
 453                 if (add_rec(line, &linev, &linev_len, kept) < 0) {
 454                         if (linev) {
 455                                 fprintf(stderr, "error: add_rec[%u] failed; "
 456                                         "print accumulated records\n",
 457                                         linev_len);
 458                                 print_rec(&linev, kept, fdout);
 459
 460                                 goto retry_add;
 461                         }
 462                         fprintf(stderr, "error: add_rec[0] failed; exiting\n");
 463                         break;
 464                 }
 465                 kept++;
 466         }
 467
 468 print:
 469         if (linev)
 470                 print_rec(&linev, kept, fdout);
 471
 472         printf("Debug log: %lu lines, %lu kept, %lu dropped, %lu bad.\n",
 473                 dropped + kept + bad, kept, dropped, bad);
 474
 475         return 0;
 476 }
 477
 478 int jt_dbg_debug_kernel(int argc, char **argv)
 479 {
 480         struct stat     st;
 481         char            filename[PATH_MAX];
 482         int             raw = 0;
 483         int             save_errno;
 484         int             fdin;
 485         int             fdout;
 486         int             rc;
 487
 488         if (argc > 3) {
 489                 fprintf(stderr, "usage: %s [file] [raw]\n", argv[0]);
 490                 return 0;
 491         }
 492
 493         if (argc > 2) {
 494                 raw = atoi(argv[2]);
 495         } else if (argc > 1 && (argv[1][0] == '0' || argv[1][0] == '1')) {
 496                 raw = atoi(argv[1]);
 497                 argc--;
 498         }
 499
 500         /* If we are dumping raw (which means no conversion step to ASCII)
 501          * then dump directly to any supplied filename, otherwise this is
 502          * just a temp file and we dump to the real file at convert time. */
 503         if (argc > 1 && raw) {
 504                 if (strlen(argv[1]) >= sizeof(filename)) {
 505                         fprintf(stderr, "File name too long: %s\n", argv[1]);
 506                         return 1;
 507                 }
 508                 strncpy(filename, argv[1], sizeof(filename));
 509         } else {
 510                 if (snprintf(filename, sizeof(filename), "%s"CFS_TIME_T".%u",
 511                              LIBCFS_DEBUG_FILE_PATH_DEFAULT, time(NULL),
 512                              getpid())
 513                     >= sizeof(filename)) {
 514                         fprintf(stderr, "File name too long\n");
 515                         return 1;
 516                 }
 517         }
 518
 519         if (stat(filename, &st) == 0 && S_ISREG(st.st_mode))
 520                 unlink(filename);
 521
 522         fdin = dbg_open_ctlhandle(DUMP_KERNEL_CTL_NAME);
 523         if (fdin < 0) {
 524                 fprintf(stderr, "open(dump_kernel) failed: %s\n",
 525                         strerror(errno));
 526                 return 1;
 527         }
 528
 529         rc = dbg_write_cmd(fdin, filename, strlen(filename));
 530         save_errno = errno;
 531         dbg_close_ctlhandle(fdin);
 532         if (rc != 0) {
 533                 fprintf(stderr, "write(%s) failed: %s\n", filename,
 534                         strerror(save_errno));
 535                 return 1;
 536         }
 537
 538         if (raw)
 539                 return 0;
 540
 541         fdin = open(filename, O_RDONLY);
 542         if (fdin < 0) {
 543                 if (errno == ENOENT) /* no dump file created */
 544                         return 0;
 545                 fprintf(stderr, "fopen(%s) failed: %s\n", filename,
 546                         strerror(errno));
 547                 return 1;
 548         }
 549         if (argc > 1) {
 550                 fdout = open(argv[1], O_WRONLY | O_CREAT | O_TRUNC,
 551                              S_IRUSR | S_IWUSR);
 552                 if (fdout < 0) {
 553                         fprintf(stderr, "fopen(%s) failed: %s\n", argv[1],
 554                                 strerror(errno));
 555                         close(fdin);
 556                         return 1;
 557                 }
 558         } else {
 559                 fdout = fileno(stdout);
 560         }
 561
 562         rc = parse_buffer(fdin, fdout);
 563         close(fdin);
 564         if (argc > 1)
 565                 close(fdout);
 566         if (rc) {
 567                 fprintf(stderr, "parse_buffer failed; leaving tmp file %s "
 568                         "behind.\n", filename);
 569         } else {
 570                 rc = unlink(filename);
 571                 if (rc)
 572                         fprintf(stderr, "dumped successfully, but couldn't "
 573                                 "unlink tmp file %s: %s\n", filename,
 574                                 strerror(errno));
 575         }
 576
 577         return rc;
 578 }
 579
 580 int jt_dbg_debug_file(int argc, char **argv)
 581 {
 582         int fdin;
 583         int fdout;
 584         int rc;
 585
 586         if (argc > 3 || argc < 2) {
 587                 fprintf(stderr, "usage: %s <input> [output]\n", argv[0]);
 588                 return 0;
 589         }
 590
 591         fdin = open(argv[1], O_RDONLY | O_LARGEFILE);
 592         if (fdin < 0) {
 593                 fprintf(stderr, "open(%s) failed: %s\n", argv[1],
 594                         strerror(errno));
 595                 return 1;
 596         }
 597         if (argc > 2) {
 598                 fdout = open(argv[2],
 599                              O_CREAT | O_TRUNC | O_WRONLY | O_LARGEFILE,
 600                              0600);
 601                 if (fdout < 0) {
 602                         fprintf(stderr, "open(%s) failed: %s\n", argv[2],
 603                                 strerror(errno));
 604                         close(fdin);
 605                         return 1;
 606                 }
 607         } else {
 608                 fdout = fileno(stdout);
 609         }
 610
 611         rc = parse_buffer(fdin, fdout);
 612
 613         close(fdin);
 614         if (fdout != fileno(stdout))
 615                 close(fdout);
 616
 617         return rc;
 618 }
 619
 620 const char debug_daemon_usage[] = "usage: %s {start file [MB]|stop}\n";
 621
 622 int jt_dbg_debug_daemon(int argc, char **argv)
 623 {
 624         int rc;
 625         int fd;
 626
 627         if (argc <= 1) {
 628                 fprintf(stderr, debug_daemon_usage, argv[0]);
 629                 return 1;
 630         }
 631
 632         fd = dbg_open_ctlhandle(DAEMON_CTL_NAME);
 633         if (fd < 0)
 634                 return -1;
 635
 636         rc = -1;
 637         if (strcasecmp(argv[1], "start") == 0) {
 638                 if (argc < 3 || argc > 4 ||
 639                     (argc == 4 && strlen(argv[3]) > 5)) {
 640                         fprintf(stderr, debug_daemon_usage, argv[0]);
 641                         goto out;
 642                 }
 643                 if (argc == 4) {
 644                         char             buf[12];
 645                         const long       min_size = 10;
 646                         const long       max_size = 20480;
 647                         long             size;
 648                         char            *end;
 649
 650                         size = strtoul(argv[3], &end, 0);
 651                         if (size < min_size ||
 652                             size > max_size ||
 653                             *end != 0) {
 654                                 fprintf(stderr, "size %s invalid, must be in "
 655                                         "the range %ld-%ld MB\n", argv[3],
 656                                         min_size, max_size);
 657                                 goto out;
 658                         }
 659                         snprintf(buf, sizeof(buf), "size=%ld", size);
 660                         rc = dbg_write_cmd(fd, buf, strlen(buf));
 661
 662                         if (rc != 0) {
 663                                 fprintf(stderr, "set %s failed: %s\n",
 664                                         buf, strerror(errno));
 665                                 goto out;
 666                         }
 667                 }
 668
 669                 rc = dbg_write_cmd(fd, argv[2], strlen(argv[2]));
 670                 if (rc != 0) {
 671                         fprintf(stderr, "start debug_daemon on %s failed: %s\n",
 672                                 argv[2], strerror(errno));
 673                         goto out;
 674                 }
 675                 rc = 0;
 676                 goto out;
 677         }
 678         if (strcasecmp(argv[1], "stop") == 0) {
 679                 rc = dbg_write_cmd(fd, "stop", 4);
 680                 if (rc != 0) {
 681                         fprintf(stderr, "stopping debug_daemon failed: %s\n",
 682                                 strerror(errno));
 683                         goto out;
 684                 }
 685
 686                 rc = 0;
 687                 goto out;
 688         }
 689
 690         fprintf(stderr, debug_daemon_usage, argv[0]);
 691         rc = -1;
 692 out:
 693         dbg_close_ctlhandle(fd);
 694         return rc;
 695 }
 696
 697 int jt_dbg_clear_debug_buf(int argc, char **argv)
 698 {
 699         int                      rc;
 700         struct libcfs_ioctl_data data;
 701
 702         if (argc != 1) {
 703                 fprintf(stderr, "usage: %s\n", argv[0]);
 704                 return 0;
 705         }
 706
 707         memset(&data, 0, sizeof(data));
 708         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 709                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 710                 return -1;
 711         }
 712
 713         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_CLEAR_DEBUG, buf);
 714         if (rc) {
 715                 fprintf(stderr, "IOC_LIBCFS_CLEAR_DEBUG failed: %s\n",
 716                         strerror(errno));
 717                 return -1;
 718         }
 719         return 0;
 720 }
 721
 722 int jt_dbg_mark_debug_buf(int argc, char **argv)
 723 {
 724         static char              scratch[MAX_MARK_SIZE] = "";
 725         struct libcfs_ioctl_data data;
 726         char                    *text;
 727         int                      rc;
 728
 729         memset(&data, 0, sizeof(data));
 730
 731         if (argc > 1) {
 732                 int count, max_size = sizeof(scratch) - 1;
 733
 734                 strncpy(scratch, argv[1], max_size);
 735                 max_size -= strlen(argv[1]);
 736                 for (count = 2; (count < argc) && (max_size > 1); count++) {
 737                         strncat(scratch, " ", max_size);
 738                         max_size -= 1;
 739                         strncat(scratch, argv[count], max_size);
 740                         max_size -= strlen(argv[count]);
 741                 }
 742                 scratch[sizeof(scratch) - 1] = '\0';
 743                 text = scratch;
 744         } else {
 745                 time_t now = time(NULL);
 746                 text = ctime(&now);
 747         }
 748
 749         data.ioc_inllen1 = strlen(text) + 1;
 750         data.ioc_inlbuf1 = text;
 751
 752         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 753                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 754                 return -1;
 755         }
 756
 757         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_MARK_DEBUG, buf);
 758         if (rc) {
 759                 fprintf(stderr, "IOC_LIBCFS_MARK_DEBUG failed: %s\n",
 760                         strerror(errno));
 761                 return -1;
 762         }
 763         return 0;
 764 }
 765
 766 static struct mod_paths {
 767         char *name, *path;
 768 } mod_paths[] = {
 769         { "libcfs", "libcfs/libcfs" },
 770         { "lnet", "lnet/lnet" },
 771         { "ko2iblnd", "lnet/klnds/o2iblnd" },
 772         { "kgnilnd", "lnet/klnds/gnilnd"},
 773         { "ksocklnd", "lnet/klnds/socklnd" },
 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         { "lustre", "lustre/llite" },
 785         { "llite_lloop", "lustre/llite" },
 786         { "ldiskfs", "ldiskfs" },
 787         { "obdecho", "lustre/obdecho" },
 788         { "ldlm", "lustre/ldlm" },
 789         { "obdfilter", "lustre/obdfilter" },
 790         { "lov", "lustre/lov" },
 791         { "lmv", "lustre/lmv" },
 792         { "lquota", "lustre/quota" },
 793         { "mgs", "lustre/mgs" },
 794         { "mgc", "lustre/mgc" },
 795         { "mdt", "lustre/mdt" },
 796         { "mdd", "lustre/mdd" },
 797         { "osd", "lustre/osd" },
 798         { "cmm", "lustre/cmm" },
 799         {"fid", "lustre/fid"},
 800         {"fld", "lustre/fld"},
 801         {"lod", "lustre/lod"},
 802         {"osp", "lustre/osp"},
 803         { "lfsck", "lustre/lfsck" },
 804         {NULL, NULL}
 805 };
 806
 807 int jt_dbg_modules(int argc, char **argv)
 808 {
 809         struct mod_paths *mp;
 810         char             *path = "";
 811         const char       *proc = "/proc/modules";
 812         char              modname[128];
 813         char              buf[4096];
 814         unsigned long     modaddr;
 815         FILE             *file;
 816
 817         if (argc >= 2)
 818                 path = argv[1];
 819         if (argc > 3) {
 820                 printf("%s [path] [kernel]\n", argv[0]);
 821                 return 0;
 822         }
 823
 824         file = fopen(proc, "r");
 825         if (!file) {
 826                 printf("failed open %s: %s\n", proc, strerror(errno));
 827                 return 0;
 828         }
 829
 830         while (fgets(buf, sizeof(buf), file) != NULL) {
 831                 if (sscanf(buf, "%s %*s %*s %*s %*s %lx",
 832                            modname, &modaddr) == 2) {
 833                         for (mp = mod_paths; mp->name != NULL; mp++) {
 834                                 if (!strcmp(mp->name, modname))
 835                                         break;
 836                         }
 837                         if (mp->name) {
 838                                 printf("add-symbol-file %s%s%s/%s.o 0x%0lx\n",
 839                                         path, path[0] ? "/" : "",
 840                                         mp->path, mp->name, modaddr);
 841                         }
 842                 }
 843         }
 844
 845         fclose(file);
 846         return 0;
 847 }
 848
 849 int jt_dbg_panic(int argc, char **argv)
 850 {
 851         int                      rc;
 852         struct libcfs_ioctl_data data;
 853
 854         if (argc != 1) {
 855                 fprintf(stderr, "usage: %s\n", argv[0]);
 856                 return 0;
 857         }
 858
 859         memset(&data, 0, sizeof(data));
 860         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 861                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 862                 return -1;
 863         }
 864
 865         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_PANIC, buf);
 866         if (rc) {
 867                 fprintf(stderr, "IOC_LIBCFS_PANIC failed: %s\n",
 868                         strerror(errno));
 869                 return -1;
 870         }
 871         return 0;
 872 }