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, 2012, 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/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[] = LIBCFS_DEBUG_SUBSYS_NAMES;
  60 static const char *libcfs_debug_masks[] = LIBCFS_DEBUG_MASKS_NAMES;
  61
  62
  63 #define DAEMON_CTL_NAME         "/proc/sys/lnet/daemon_file"
  64 #define SUBSYS_DEBUG_CTL_NAME   "/proc/sys/lnet/subsystem_debug"
  65 #define DEBUG_CTL_NAME          "/proc/sys/lnet/debug"
  66 #define DUMP_KERNEL_CTL_NAME    "/proc/sys/lnet/dump_kernel"
  67
  68 static int
  69 dbg_open_ctlhandle(const char *str)
  70 {
  71         int fd;
  72         fd = open(str, O_WRONLY);
  73         if (fd < 0) {
  74                 fprintf(stderr, "open %s failed: %s\n", str,
  75                         strerror(errno));
  76                 return -1;
  77         }
  78         return fd;
  79 }
  80
  81 static void
  82 dbg_close_ctlhandle(int fd)
  83 {
  84         close(fd);
  85 }
  86
  87 static int
  88 dbg_write_cmd(int fd, char *str, int len)
  89 {
  90         int    rc  = write(fd, str, len);
  91
  92         return (rc == len ? 0 : 1);
  93 }
  94
  95
  96 static int do_debug_mask(char *name, int enable)
  97 {
  98         int found = 0, 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         if (!dump_filename) {
 196                 applymask(SUBSYS_DEBUG_CTL_NAME, subs_mask);
 197                 applymask(DEBUG_CTL_NAME, debug_mask);
 198         } else {
 199                 struct libcfs_debug_ioctl_data data;
 200
 201                 data.hdr.ioc_len = sizeof(data);
 202                 data.hdr.ioc_version = 0;
 203                 data.subs = subs_mask;
 204                 data.debug = debug_mask;
 205
 206                 dump(OBD_DEV_ID, LIBCFS_IOC_DEBUG_MASK, &data);
 207         }
 208         printf("Applied subsystem_debug=%d, debug=%d to /proc/sys/lnet\n",
 209                subs_mask, debug_mask);
 210 }
 211
 212 int jt_dbg_list(int argc, char **argv)
 213 {
 214         int i;
 215
 216         if (argc != 2) {
 217                 fprintf(stderr, "usage: %s <subs || types>\n", argv[0]);
 218                 return 0;
 219         }
 220
 221         if (strcasecmp(argv[1], "subs") == 0) {
 222                 printf("Subsystems: all_subs");
 223                 for (i = 0; libcfs_debug_subsystems[i] != NULL; i++)
 224                         if (libcfs_debug_subsystems[i][0])
 225                                 printf(", %s", libcfs_debug_subsystems[i]);
 226                 printf("\n");
 227         } else if (strcasecmp(argv[1], "types") == 0) {
 228                 printf("Types: all_types");
 229                 for (i = 0; libcfs_debug_masks[i] != NULL; i++)
 230                         printf(", %s", libcfs_debug_masks[i]);
 231                 printf("\n");
 232         } else if (strcasecmp(argv[1], "applymasks") == 0) {
 233                 applymask_all(subsystem_mask, debug_mask);
 234         }
 235         return 0;
 236 }
 237
 238 /* all strings nul-terminated; only the struct and hdr need to be freed */
 239 struct dbg_line {
 240         struct ptldebug_header *hdr;
 241         char *file;
 242         char *fn;
 243         char *text;
 244 };
 245
 246 static int cmp_rec(const void *p1, const void *p2)
 247 {
 248         struct dbg_line *d1 = *(struct dbg_line **)p1;
 249         struct dbg_line *d2 = *(struct dbg_line **)p2;
 250
 251         if (d1->hdr->ph_sec < d2->hdr->ph_sec)
 252                 return -1;
 253         if (d1->hdr->ph_sec == d2->hdr->ph_sec &&
 254             d1->hdr->ph_usec < d2->hdr->ph_usec)
 255                 return -1;
 256         if (d1->hdr->ph_sec == d2->hdr->ph_sec &&
 257             d1->hdr->ph_usec == d2->hdr->ph_usec)
 258                 return 0;
 259         return 1;
 260 }
 261
 262 static void print_rec(struct dbg_line ***linevp, int used, int fdout)
 263 {
 264         struct dbg_line **linev = *linevp;
 265         int i;
 266
 267         qsort(linev, used, sizeof(struct dbg_line *), cmp_rec);
 268         for (i = 0; i < used; i++) {
 269                 struct dbg_line *line = linev[i];
 270                 struct ptldebug_header *hdr = line->hdr;
 271                 char out[4097];
 272                 char *buf = out;
 273                 int bytes;
 274                 ssize_t bytes_written;
 275
 276                 bytes = sprintf(out, "%08x:%08x:%u.%u%s:%u.%06llu:%u:%u:%u:(%s:%u:%s()) %s",
 277                                 hdr->ph_subsys, hdr->ph_mask,
 278                                 hdr->ph_cpu_id, hdr->ph_type,
 279                                 hdr->ph_flags & PH_FLAG_FIRST_RECORD ? "F" : "",
 280                                 hdr->ph_sec, (unsigned long long)hdr->ph_usec,
 281                                 hdr->ph_stack, hdr->ph_pid, hdr->ph_extern_pid,
 282                                 line->file, hdr->ph_line_num, line->fn, line->text);
 283                 while (bytes > 0) {
 284                         bytes_written = write(fdout, buf, bytes);
 285                         if (bytes_written <= 0)
 286                                 break;
 287                         bytes -= bytes_written;
 288                         buf += bytes_written;
 289                 }
 290                 free(line->hdr);
 291                 free(line);
 292         }
 293         free(linev);
 294         *linevp = NULL;
 295 }
 296
 297 static int add_rec(struct dbg_line *line, struct dbg_line ***linevp, int *lenp,
 298                    int used)
 299 {
 300         struct dbg_line **linev = *linevp;
 301
 302         if (used == *lenp) {
 303                 int nlen = *lenp + 4096;
 304                 int nsize = nlen * sizeof(struct dbg_line *);
 305
 306                 linev = realloc(*linevp, nsize);
 307                 if (!linev)
 308                         return -ENOMEM;
 309
 310                 *linevp = linev;
 311                 *lenp = nlen;
 312         }
 313         linev[used] = line;
 314
 315         return 0;
 316 }
 317
 318 static void dump_hdr(unsigned long long offset, struct ptldebug_header *hdr)
 319 {
 320         fprintf(stderr, "badly-formed record at offset = %llu\n", offset);
 321         fprintf(stderr, "  len = %u\n", hdr->ph_len);
 322         fprintf(stderr, "  flags = %x\n", hdr->ph_flags);
 323         fprintf(stderr, "  subsystem = %x\n", hdr->ph_subsys);
 324         fprintf(stderr, "  mask = %x\n", hdr->ph_mask);
 325         fprintf(stderr, "  cpu_id = %u\n", hdr->ph_cpu_id);
 326         fprintf(stderr, "  type = %u\n", hdr->ph_type);
 327         fprintf(stderr, "  seconds = %u\n", hdr->ph_sec);
 328         fprintf(stderr, "  microseconds = %lu\n", (long)hdr->ph_usec);
 329         fprintf(stderr, "  stack = %u\n", hdr->ph_stack);
 330         fprintf(stderr, "  pid = %u\n", hdr->ph_pid);
 331         fprintf(stderr, "  host pid = %u\n", hdr->ph_extern_pid);
 332         fprintf(stderr, "  line number = %u\n", hdr->ph_line_num);
 333 }
 334
 335 #define HDR_SIZE sizeof(*hdr)
 336
 337 static int parse_buffer(int fdin, int fdout)
 338 {
 339         struct dbg_line *line;
 340         struct ptldebug_header *hdr;
 341         char buf[4097], *ptr;
 342         unsigned long dropped = 0, kept = 0, bad = 0;
 343         struct dbg_line **linev = NULL;
 344         int linev_len = 0;
 345         int rc;
 346
 347         hdr = (void *)buf;
 348
 349         while (1) {
 350                 int first_bad = 1;
 351                 int count;
 352
 353                 count = HDR_SIZE;
 354                 ptr = buf;
 355         readhdr:
 356                 rc = read(fdin, ptr, count);
 357                 if (rc <= 0)
 358                          goto print;
 359
 360                 ptr += rc;
 361                 count -= rc;
 362                 if (count > 0)
 363                         goto readhdr;
 364
 365                 if (hdr->ph_len > 4094 ||       /* is this header bogus? */
 366                     hdr->ph_type >= libcfs_tcd_type_max() ||
 367                     hdr->ph_stack > 65536 ||
 368                     hdr->ph_sec < (1 << 30) ||
 369                     hdr->ph_usec > 1000000000 ||
 370                     hdr->ph_line_num > 65536) {
 371                         if (first_bad)
 372                                 dump_hdr(lseek(fdin, 0, SEEK_CUR), hdr);
 373                         bad += first_bad;
 374                         first_bad = 0;
 375
 376                         /* try to restart on next line */
 377                         while (count < HDR_SIZE && buf[count] != '\n')
 378                                 count++;
 379                         if (buf[count] == '\n')
 380                                 count++; /* move past '\n' */
 381                         if (HDR_SIZE - count > 0) {
 382                                 int left = HDR_SIZE - count;
 383
 384                                 memmove(buf, buf + count, left);
 385                                 ptr = buf + left;
 386
 387                                 goto readhdr;
 388                         }
 389
 390                         continue;
 391                 }
 392
 393                 if (hdr->ph_len == 0)
 394                         continue;
 395
 396                 count = hdr->ph_len - HDR_SIZE;
 397         readmore:
 398                 rc = read(fdin, ptr, count);
 399                 if (rc <= 0)
 400                         break;
 401
 402                 ptr += rc;
 403                 count -= rc;
 404                 if (count > 0)
 405                         goto readmore;
 406
 407                 first_bad = 1;
 408
 409                 if ((hdr->ph_subsys && !(subsystem_mask & hdr->ph_subsys)) ||
 410                     (hdr->ph_mask && !(debug_mask & hdr->ph_mask))) {
 411                         dropped++;
 412                         continue;
 413                 }
 414
 415         retry_alloc:
 416                 line = malloc(sizeof(*line));
 417                 if (line == NULL) {
 418                          if (linev) {
 419                                 fprintf(stderr, "error: line malloc(%u): "
 420                                         "printing accumulated records\n",
 421                                         (unsigned int)sizeof(*line));
 422                                 print_rec(&linev, kept, fdout);
 423
 424                                 goto retry_alloc;
 425                         }
 426                         fprintf(stderr, "error: line malloc(%u): exiting\n",
 427                                 (unsigned int)sizeof(*line));
 428                         break;
 429                 }
 430
 431                 line->hdr = malloc(hdr->ph_len + 1);
 432                 if (line->hdr == NULL) {
 433                         free(line);
 434                         if (linev) {
 435                                 fprintf(stderr, "error: hdr malloc(%u): "
 436                                         "printing accumulated records\n",
 437                                         hdr->ph_len + 1);
 438                                 print_rec(&linev, kept, fdout);
 439
 440                                 goto retry_alloc;
 441                         }
 442                         fprintf(stderr, "error: hdr malloc(%u): exiting\n",
 443                                         hdr->ph_len + 1);
 444                         break;
 445                 }
 446
 447                 ptr = (void *)line->hdr;
 448                 memcpy(line->hdr, buf, hdr->ph_len);
 449                 ptr[hdr->ph_len] = '\0';
 450
 451                 ptr += sizeof(*hdr);
 452                 line->file = ptr;
 453                 ptr += strlen(line->file) + 1;
 454                 line->fn = ptr;
 455                 ptr += strlen(line->fn) + 1;
 456                 line->text = ptr;
 457
 458         retry_add:
 459                 if (add_rec(line, &linev, &linev_len, kept) < 0) {
 460                         if (linev) {
 461                                 fprintf(stderr, "error: add_rec[%u] failed; "
 462                                         "print accumulated records\n",
 463                                         linev_len);
 464                                 print_rec(&linev, kept, fdout);
 465
 466                                 goto retry_add;
 467                         }
 468                         fprintf(stderr, "error: add_rec[0] failed; exiting\n");
 469                         break;
 470                 }
 471                 kept++;
 472         }
 473
 474 print:
 475         if (linev)
 476                 print_rec(&linev, kept, fdout);
 477
 478         printf("Debug log: %lu lines, %lu kept, %lu dropped, %lu bad.\n",
 479                 dropped + kept + bad, kept, dropped, bad);
 480
 481         return 0;
 482 }
 483
 484 int jt_dbg_debug_kernel(int argc, char **argv)
 485 {
 486         struct stat st;
 487         char filename[PATH_MAX];
 488         int raw = 0;
 489         int save_errno;
 490         int fdin;
 491         int fdout;
 492         int rc;
 493
 494         if (argc > 3) {
 495                 fprintf(stderr, "usage: %s [file] [raw]\n", argv[0]);
 496                 return 0;
 497         }
 498
 499         if (argc > 2) {
 500                 raw = atoi(argv[2]);
 501         } else if (argc > 1 && (argv[1][0] == '0' || argv[1][0] == '1')) {
 502                 raw = atoi(argv[1]);
 503                 argc--;
 504         }
 505
 506         /* If we are dumping raw (which means no conversion step to ASCII)
 507          * then dump directly to any supplied filename, otherwise this is
 508          * just a temp file and we dump to the real file at convert time. */
 509         if (argc > 1 && raw) {
 510                 if (strlen(argv[1]) >= sizeof(filename)) {
 511                         fprintf(stderr, "File name too long: %s\n", argv[1]);
 512                         return 1;
 513                 }
 514                 strncpy(filename, argv[1], sizeof(filename));
 515         } else {
 516                 if (snprintf(filename, sizeof(filename), "%s"CFS_TIME_T".%u",
 517                              LIBCFS_DEBUG_FILE_PATH_DEFAULT, time(NULL),
 518                              getpid())
 519                     >= sizeof(filename)) {
 520                         fprintf(stderr, "File name too long\n");
 521                         return 1;
 522                 }
 523         }
 524
 525         if (stat(filename, &st) == 0 && S_ISREG(st.st_mode))
 526                 unlink(filename);
 527
 528         fdin = dbg_open_ctlhandle(DUMP_KERNEL_CTL_NAME);
 529         if (fdin < 0) {
 530                 fprintf(stderr, "open(dump_kernel) failed: %s\n",
 531                         strerror(errno));
 532                 return 1;
 533         }
 534
 535         rc = dbg_write_cmd(fdin, filename, strlen(filename));
 536         save_errno = errno;
 537         dbg_close_ctlhandle(fdin);
 538         if (rc != 0) {
 539                 fprintf(stderr, "write(%s) failed: %s\n", filename,
 540                         strerror(save_errno));
 541                 return 1;
 542         }
 543
 544         if (raw)
 545                 return 0;
 546
 547         fdin = open(filename, O_RDONLY);
 548         if (fdin < 0) {
 549                 if (errno == ENOENT) /* no dump file created */
 550                         return 0;
 551                 fprintf(stderr, "fopen(%s) failed: %s\n", filename,
 552                         strerror(errno));
 553                 return 1;
 554         }
 555         if (argc > 1) {
 556                 fdout = open(argv[1], O_WRONLY | O_CREAT | O_TRUNC,
 557                              S_IRUSR | S_IWUSR);
 558                 if (fdout < 0) {
 559                         fprintf(stderr, "fopen(%s) failed: %s\n", argv[1],
 560                                 strerror(errno));
 561                         close(fdin);
 562                         return 1;
 563                 }
 564         } else {
 565                 fdout = fileno(stdout);
 566         }
 567
 568         rc = parse_buffer(fdin, fdout);
 569         close(fdin);
 570         if (argc > 1)
 571                 close(fdout);
 572         if (rc) {
 573                 fprintf(stderr, "parse_buffer failed; leaving tmp file %s "
 574                         "behind.\n", filename);
 575         } else {
 576                 rc = unlink(filename);
 577                 if (rc)
 578                         fprintf(stderr, "dumped successfully, but couldn't "
 579                                 "unlink tmp file %s: %s\n", filename,
 580                                 strerror(errno));
 581         }
 582
 583         return rc;
 584 }
 585
 586 int jt_dbg_debug_file(int argc, char **argv)
 587 {
 588         int    fdin;
 589         int    fdout;
 590         int    rc;
 591
 592         if (argc > 3 || argc < 2) {
 593                 fprintf(stderr, "usage: %s <input> [output]\n", argv[0]);
 594                 return 0;
 595         }
 596
 597         fdin = open(argv[1], O_RDONLY | O_LARGEFILE);
 598         if (fdin < 0) {
 599                 fprintf(stderr, "open(%s) failed: %s\n", argv[1],
 600                         strerror(errno));
 601                 return 1;
 602         }
 603         if (argc > 2) {
 604                 fdout = open(argv[2],
 605                              O_CREAT | O_TRUNC | O_WRONLY | O_LARGEFILE,
 606                              0600);
 607                 if (fdout < 0) {
 608                         fprintf(stderr, "open(%s) failed: %s\n", argv[2],
 609                                 strerror(errno));
 610                         close(fdin);
 611                         return 1;
 612                 }
 613         } else {
 614                 fdout = fileno(stdout);
 615         }
 616
 617         rc = parse_buffer(fdin, fdout);
 618
 619         close(fdin);
 620         if (fdout != fileno(stdout))
 621                 close(fdout);
 622
 623         return rc;
 624 }
 625
 626 const char debug_daemon_usage[] = "usage: %s {start file [MB]|stop}\n";
 627
 628 int jt_dbg_debug_daemon(int argc, char **argv)
 629 {
 630         int  rc;
 631         int  fd;
 632
 633         if (argc <= 1) {
 634                 fprintf(stderr, debug_daemon_usage, argv[0]);
 635                 return 1;
 636         }
 637
 638         fd = dbg_open_ctlhandle(DAEMON_CTL_NAME);
 639         if (fd < 0)
 640                 return -1;
 641
 642         rc = -1;
 643         if (strcasecmp(argv[1], "start") == 0) {
 644              if (argc < 3 || argc > 4 ||
 645                     (argc == 4 && strlen(argv[3]) > 5)) {
 646                         fprintf(stderr, debug_daemon_usage, argv[0]);
 647                         goto out;
 648                 }
 649                 if (argc == 4) {
 650                         char       buf[12];
 651                         const long min_size = 10;
 652                         const long max_size = 20480;
 653                         long       size;
 654                         char      *end;
 655
 656                         size = strtoul(argv[3], &end, 0);
 657                         if (size < min_size ||
 658                             size > max_size ||
 659                             *end != 0) {
 660                                 fprintf(stderr, "size %s invalid, must be in "
 661                                         "the range %ld-%ld MB\n", argv[3],
 662                                         min_size, max_size);
 663                                 goto out;
 664                         }
 665                         snprintf(buf, sizeof(buf), "size=%ld", size);
 666                         rc = dbg_write_cmd(fd, buf, strlen(buf));
 667
 668                         if (rc != 0) {
 669                                 fprintf(stderr, "set %s failed: %s\n",
 670                                         buf, strerror(errno));
 671                                 goto out;
 672                         }
 673                 }
 674
 675                 rc = dbg_write_cmd(fd, argv[2], strlen(argv[2]));
 676                 if (rc != 0) {
 677                         fprintf(stderr, "start debug_daemon on %s failed: %s\n",
 678                                 argv[2], strerror(errno));
 679                         goto out;
 680                 }
 681                 rc = 0;
 682                 goto out;
 683         }
 684         if (strcasecmp(argv[1], "stop") == 0) {
 685                 rc = dbg_write_cmd(fd, "stop", 4);
 686                 if (rc != 0) {
 687                         fprintf(stderr, "stopping debug_daemon failed: %s\n",
 688                                 strerror(errno));
 689                         goto out;
 690                 }
 691
 692                 rc = 0;
 693                 goto out;
 694         }
 695
 696         fprintf(stderr, debug_daemon_usage, argv[0]);
 697         rc = -1;
 698 out:
 699         dbg_close_ctlhandle(fd);
 700         return rc;
 701 }
 702
 703 int jt_dbg_clear_debug_buf(int argc, char **argv)
 704 {
 705         int rc;
 706         struct libcfs_ioctl_data data;
 707
 708         if (argc != 1) {
 709                 fprintf(stderr, "usage: %s\n", argv[0]);
 710                 return 0;
 711         }
 712
 713         memset(&data, 0, sizeof(data));
 714         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 715                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 716                 return -1;
 717         }
 718
 719         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_CLEAR_DEBUG, buf);
 720         if (rc) {
 721                 fprintf(stderr, "IOC_LIBCFS_CLEAR_DEBUG failed: %s\n",
 722                         strerror(errno));
 723                 return -1;
 724         }
 725         return 0;
 726 }
 727
 728 int jt_dbg_mark_debug_buf(int argc, char **argv)
 729 {
 730         static char scratch[MAX_MARK_SIZE] = "";
 731         struct libcfs_ioctl_data data;
 732         char *text;
 733         int rc;
 734
 735         memset(&data, 0, sizeof(data));
 736
 737         if (argc > 1) {
 738                 int count, max_size = sizeof(scratch) - 1;
 739
 740                 strncpy(scratch, argv[1], max_size);
 741                 max_size -= strlen(argv[1]);
 742                 for (count = 2; (count < argc) && (max_size > 1); count++) {
 743                         strncat(scratch, " ", max_size);
 744                         max_size -= 1;
 745                         strncat(scratch, argv[count], max_size);
 746                         max_size -= strlen(argv[count]);
 747                 }
 748                 scratch[sizeof(scratch) - 1] = '\0';
 749                 text = scratch;
 750         } else {
 751                 time_t now = time(NULL);
 752                 text = ctime(&now);
 753         }
 754
 755         data.ioc_inllen1 = strlen(text) + 1;
 756         data.ioc_inlbuf1 = text;
 757
 758         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 759                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 760                 return -1;
 761         }
 762
 763         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_MARK_DEBUG, buf);
 764         if (rc) {
 765                 fprintf(stderr, "IOC_LIBCFS_MARK_DEBUG failed: %s\n",
 766                         strerror(errno));
 767                 return -1;
 768         }
 769         return 0;
 770 }
 771
 772 static struct mod_paths {
 773         char *name, *path;
 774 } mod_paths[] = {
 775         { "libcfs", "libcfs/libcfs" },
 776         { "lnet", "lnet/lnet" },
 777         { "kmxlnd", "lnet/klnds/mxlnd" },
 778         { "ko2iblnd", "lnet/klnds/o2iblnd" },
 779         { "kgnilnd", "lnet/klnds/gnilnd"},
 780         { "kqswlnd", "lnet/klnds/qswlnd" },
 781         { "kralnd", "lnet/klnds/ralnd" },
 782         { "ksocklnd", "lnet/klnds/socklnd" },
 783         { "ktdilnd", "lnet/klnds/tdilnd" },
 784         { "obdclass", "lustre/obdclass" },
 785         { "llog_test", "lustre/obdclass" },
 786         { "ptlrpc_gss", "lustre/ptlrpc/gss" },
 787         { "ptlrpc", "lustre/ptlrpc" },
 788         { "gks", "lustre/sec/gks" },
 789         { "gkc", "lustre/sec/gks" },
 790         { "ost", "lustre/ost" },
 791         { "osc", "lustre/osc" },
 792         { "mds", "lustre/mds" },
 793         { "mdc", "lustre/mdc" },
 794         { "lustre", "lustre/llite" },
 795         { "llite_lloop", "lustre/llite" },
 796         { "ldiskfs", "ldiskfs" },
 797         { "obdecho", "lustre/obdecho" },
 798         { "ldlm", "lustre/ldlm" },
 799         { "obdfilter", "lustre/obdfilter" },
 800         { "lov", "lustre/lov" },
 801         { "lmv", "lustre/lmv" },
 802         { "lquota", "lustre/quota" },
 803         { "mgs", "lustre/mgs" },
 804         { "mgc", "lustre/mgc" },
 805         { "mdt", "lustre/mdt" },
 806         { "mdd", "lustre/mdd" },
 807         { "osd", "lustre/osd" },
 808         { "cmm", "lustre/cmm" },
 809         {"fid", "lustre/fid"},
 810         {"fld", "lustre/fld"},
 811         {"lod", "lustre/lod"},
 812         {"osp", "lustre/osp"},
 813         { "lfsck", "lustre/lfsck" },
 814         {NULL, NULL}
 815 };
 816
 817 int jt_dbg_modules(int argc, char **argv)
 818 {
 819         struct mod_paths *mp;
 820         char *path = "";
 821         const char *proc = "/proc/modules";
 822         char modname[128], buf[4096];
 823         unsigned long modaddr;
 824         FILE *file;
 825
 826         if (argc >= 2)
 827                 path = argv[1];
 828         if (argc > 3) {
 829                 printf("%s [path] [kernel]\n", argv[0]);
 830                 return 0;
 831         }
 832
 833         file = fopen(proc, "r");
 834         if (!file) {
 835                 printf("failed open %s: %s\n", proc, strerror(errno));
 836                 return 0;
 837         }
 838
 839         while (fgets(buf, sizeof(buf), file) != NULL) {
 840                 if (sscanf(buf, "%s %*s %*s %*s %*s %lx", modname, &modaddr) == 2) {
 841                         for (mp = mod_paths; mp->name != NULL; mp++) {
 842                                 if (!strcmp(mp->name, modname))
 843                                         break;
 844                         }
 845                         if (mp->name) {
 846                                 printf("add-symbol-file %s%s%s/%s.o 0x%0lx\n",
 847                                         path, path[0] ? "/" : "",
 848                                         mp->path, mp->name, modaddr);
 849                         }
 850                 }
 851         }
 852
 853         fclose(file);
 854         return 0;
 855 }
 856
 857 int jt_dbg_panic(int argc, char **argv)
 858 {
 859         int rc;
 860         struct libcfs_ioctl_data data;
 861
 862         if (argc != 1) {
 863                 fprintf(stderr, "usage: %s\n", argv[0]);
 864                 return 0;
 865         }
 866
 867         memset(&data, 0, sizeof(data));
 868         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 869                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 870                 return -1;
 871         }
 872
 873         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_PANIC, buf);
 874         if (rc) {
 875                 fprintf(stderr, "IOC_LIBCFS_PANIC failed: %s\n",
 876                         strerror(errno));
 877                 return -1;
 878         }
 879         return 0;
 880 }