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 #ifdef __linux__
  63
  64 #define DAEMON_CTL_NAME         "/proc/sys/lnet/daemon_file"
  65 #define SUBSYS_DEBUG_CTL_NAME   "/proc/sys/lnet/subsystem_debug"
  66 #define DEBUG_CTL_NAME          "/proc/sys/lnet/debug"
  67 #define DUMP_KERNEL_CTL_NAME    "/proc/sys/lnet/dump_kernel"
  68
  69 static int
  70 dbg_open_ctlhandle(const char *str)
  71 {
  72         int fd;
  73         fd = open(str, O_WRONLY);
  74         if (fd < 0) {
  75                 fprintf(stderr, "open %s failed: %s\n", str,
  76                         strerror(errno));
  77                 return -1;
  78         }
  79         return fd;
  80 }
  81
  82 static void
  83 dbg_close_ctlhandle(int fd)
  84 {
  85         close(fd);
  86 }
  87
  88 static int
  89 dbg_write_cmd(int fd, char *str, int len)
  90 {
  91         int    rc  = write(fd, str, len);
  92
  93         return (rc == len ? 0 : 1);
  94 }
  95
  96 #elif defined(__DARWIN__)
  97
  98 #define DAEMON_CTL_NAME         "lnet.trace_daemon"
  99 #define SUBSYS_DEBUG_CTL_NAME   "lnet.subsystem_debug"
 100 #define DEBUG_CTL_NAME          "lnet.debug"
 101 #define DUMP_KERNEL_CTL_NAME    "lnet.trace_dumpkernel"
 102
 103 static char     sysctl_name[128];
 104 static int
 105 dbg_open_ctlhandle(const char *str)
 106 {
 107
 108         if (strlen(str)+1 > 128) {
 109                 fprintf(stderr, "sysctl name is too long: %s.\n", str);
 110                 return -1;
 111         }
 112         strcpy(sysctl_name, str);
 113
 114         return 0;
 115 }
 116
 117 static void
 118 dbg_close_ctlhandle(int fd)
 119 {
 120         sysctl_name[0] = '\0';
 121         return;
 122 }
 123
 124 static int
 125 dbg_write_cmd(int fd, char *str, int len)
 126 {
 127         int     rc;
 128
 129         rc = sysctlbyname(sysctl_name, NULL, NULL, str, len+1);
 130         if (rc != 0) {
 131                 fprintf(stderr, "sysctl %s with cmd (%s) error: %d\n",
 132                         sysctl_name, str, errno);
 133         }
 134         return (rc == 0 ? 0: 1);
 135 }
 136
 137 #elif defined(__WINNT__)
 138
 139 #define DAEMON_CTL_NAME         "/proc/sys/lnet/daemon_file"
 140 #define SUBSYS_DEBUG_CTL_NAME   "/proc/sys/lnet/subsystem_debug"
 141 #define DEBUG_CTL_NAME          "/proc/sys/lnet/debug"
 142 #define DUMP_KERNEL_CTL_NAME    "/proc/sys/lnet/dump_kernel"
 143
 144 static int
 145 dbg_open_ctlhandle(const char *str)
 146 {
 147         int fd;
 148         fd = cfs_proc_open((char *)str, (int)O_WRONLY);
 149         if (fd < 0) {
 150                 fprintf(stderr, "open %s failed: %s\n", str,
 151                         strerror(errno));
 152                 return -1;
 153         }
 154         return fd;
 155 }
 156
 157 static void
 158 dbg_close_ctlhandle(int fd)
 159 {
 160         cfs_proc_close(fd);
 161 }
 162
 163 static int
 164 dbg_write_cmd(int fd, char *str, int len)
 165 {
 166         int    rc  = cfs_proc_write(fd, str, len);
 167
 168         return (rc == len ? 0 : 1);
 169 }
 170
 171 #else
 172 #error - Unknown sysctl convention.
 173 #endif
 174
 175 static int do_debug_mask(char *name, int enable)
 176 {
 177         int found = 0, i;
 178
 179         for (i = 0; libcfs_debug_subsystems[i] != NULL; i++) {
 180                 if (strcasecmp(name, libcfs_debug_subsystems[i]) == 0 ||
 181                     strcasecmp(name, "all_subs") == 0) {
 182                         printf("%s output from subsystem \"%s\"\n",
 183                                 enable ? "Enabling" : "Disabling",
 184                                 libcfs_debug_subsystems[i]);
 185                         if (enable)
 186                                 subsystem_mask |= (1 << i);
 187                         else
 188                                 subsystem_mask &= ~(1 << i);
 189                         found = 1;
 190                 }
 191         }
 192         for (i = 0; libcfs_debug_masks[i] != NULL; i++) {
 193                 if (strcasecmp(name, libcfs_debug_masks[i]) == 0 ||
 194                     strcasecmp(name, "all_types") == 0) {
 195                         printf("%s output of type \"%s\"\n",
 196                                 enable ? "Enabling" : "Disabling",
 197                                 libcfs_debug_masks[i]);
 198                         if (enable)
 199                                 debug_mask |= (1 << i);
 200                         else
 201                                 debug_mask &= ~(1 << i);
 202                         found = 1;
 203                 }
 204         }
 205
 206         return found;
 207 }
 208
 209 int dbg_initialize(int argc, char **argv)
 210 {
 211         return 0;
 212 }
 213
 214 int jt_dbg_filter(int argc, char **argv)
 215 {
 216         int   i;
 217
 218         if (argc < 2) {
 219                 fprintf(stderr, "usage: %s <subsystem ID or debug mask>\n",
 220                         argv[0]);
 221                 return 0;
 222         }
 223
 224         for (i = 1; i < argc; i++)
 225                 if (!do_debug_mask(argv[i], 0))
 226                         fprintf(stderr, "Unknown subsystem or debug type: %s\n",
 227                                 argv[i]);
 228         return 0;
 229 }
 230
 231 int jt_dbg_show(int argc, char **argv)
 232 {
 233         int    i;
 234
 235         if (argc < 2) {
 236                 fprintf(stderr, "usage: %s <subsystem ID or debug mask>\n",
 237                         argv[0]);
 238                 return 0;
 239         }
 240
 241         for (i = 1; i < argc; i++)
 242                 if (!do_debug_mask(argv[i], 1))
 243                         fprintf(stderr, "Unknown subsystem or debug type: %s\n",
 244                                 argv[i]);
 245
 246         return 0;
 247 }
 248
 249 static int applymask(char* procpath, int value)
 250 {
 251         int rc;
 252         char buf[64];
 253         int len = snprintf(buf, 64, "%d", value);
 254
 255         int fd = dbg_open_ctlhandle(procpath);
 256         if (fd == -1) {
 257                 fprintf(stderr, "Unable to open %s: %s\n",
 258                         procpath, strerror(errno));
 259                 return fd;
 260         }
 261         rc = dbg_write_cmd(fd, buf, len+1);
 262         if (rc != 0) {
 263                 fprintf(stderr, "Write to %s failed: %s\n",
 264                         procpath, strerror(errno));
 265         }
 266
 267         dbg_close_ctlhandle(fd);
 268
 269         return rc;
 270 }
 271
 272 static void applymask_all(unsigned int subs_mask, unsigned int debug_mask)
 273 {
 274         if (!dump_filename) {
 275                 applymask(SUBSYS_DEBUG_CTL_NAME, subs_mask);
 276                 applymask(DEBUG_CTL_NAME, debug_mask);
 277         } else {
 278                 struct libcfs_debug_ioctl_data data;
 279
 280                 data.hdr.ioc_len = sizeof(data);
 281                 data.hdr.ioc_version = 0;
 282                 data.subs = subs_mask;
 283                 data.debug = debug_mask;
 284
 285                 dump(OBD_DEV_ID, LIBCFS_IOC_DEBUG_MASK, &data);
 286         }
 287         printf("Applied subsystem_debug=%d, debug=%d to /proc/sys/lnet\n",
 288                subs_mask, debug_mask);
 289 }
 290
 291 int jt_dbg_list(int argc, char **argv)
 292 {
 293         int i;
 294
 295         if (argc != 2) {
 296                 fprintf(stderr, "usage: %s <subs || types>\n", argv[0]);
 297                 return 0;
 298         }
 299
 300         if (strcasecmp(argv[1], "subs") == 0) {
 301                 printf("Subsystems: all_subs");
 302                 for (i = 0; libcfs_debug_subsystems[i] != NULL; i++)
 303                         if (libcfs_debug_subsystems[i][0])
 304                                 printf(", %s", libcfs_debug_subsystems[i]);
 305                 printf("\n");
 306         } else if (strcasecmp(argv[1], "types") == 0) {
 307                 printf("Types: all_types");
 308                 for (i = 0; libcfs_debug_masks[i] != NULL; i++)
 309                         printf(", %s", libcfs_debug_masks[i]);
 310                 printf("\n");
 311         } else if (strcasecmp(argv[1], "applymasks") == 0) {
 312                 applymask_all(subsystem_mask, debug_mask);
 313         }
 314         return 0;
 315 }
 316
 317 /* all strings nul-terminated; only the struct and hdr need to be freed */
 318 struct dbg_line {
 319         struct ptldebug_header *hdr;
 320         char *file;
 321         char *fn;
 322         char *text;
 323 };
 324
 325 static int cmp_rec(const void *p1, const void *p2)
 326 {
 327         struct dbg_line *d1 = *(struct dbg_line **)p1;
 328         struct dbg_line *d2 = *(struct dbg_line **)p2;
 329
 330         if (d1->hdr->ph_sec < d2->hdr->ph_sec)
 331                 return -1;
 332         if (d1->hdr->ph_sec == d2->hdr->ph_sec &&
 333             d1->hdr->ph_usec < d2->hdr->ph_usec)
 334                 return -1;
 335         if (d1->hdr->ph_sec == d2->hdr->ph_sec &&
 336             d1->hdr->ph_usec == d2->hdr->ph_usec)
 337                 return 0;
 338         return 1;
 339 }
 340
 341 static void print_rec(struct dbg_line ***linevp, int used, int fdout)
 342 {
 343         struct dbg_line **linev = *linevp;
 344         int i;
 345
 346         qsort(linev, used, sizeof(struct dbg_line *), cmp_rec);
 347         for (i = 0; i < used; i++) {
 348                 struct dbg_line *line = linev[i];
 349                 struct ptldebug_header *hdr = line->hdr;
 350                 char out[4097];
 351                 char *buf = out;
 352                 int bytes;
 353                 ssize_t bytes_written;
 354
 355                 bytes = sprintf(out, "%08x:%08x:%u.%u%s:%u.%06llu:%u:%u:%u:(%s:%u:%s()) %s",
 356                                 hdr->ph_subsys, hdr->ph_mask,
 357                                 hdr->ph_cpu_id, hdr->ph_type,
 358                                 hdr->ph_flags & PH_FLAG_FIRST_RECORD ? "F" : "",
 359                                 hdr->ph_sec, (unsigned long long)hdr->ph_usec,
 360                                 hdr->ph_stack, hdr->ph_pid, hdr->ph_extern_pid,
 361                                 line->file, hdr->ph_line_num, line->fn, line->text);
 362                 while (bytes > 0) {
 363                         bytes_written = write(fdout, buf, bytes);
 364                         if (bytes_written <= 0)
 365                                 break;
 366                         bytes -= bytes_written;
 367                         buf += bytes_written;
 368                 }
 369                 free(line->hdr);
 370                 free(line);
 371         }
 372         free(linev);
 373         *linevp = NULL;
 374 }
 375
 376 static int add_rec(struct dbg_line *line, struct dbg_line ***linevp, int *lenp,
 377                    int used)
 378 {
 379         struct dbg_line **linev = *linevp;
 380
 381         if (used == *lenp) {
 382                 int nlen = *lenp + 4096;
 383                 int nsize = nlen * sizeof(struct dbg_line *);
 384
 385                 linev = realloc(*linevp, nsize);
 386                 if (!linev)
 387                         return -ENOMEM;
 388
 389                 *linevp = linev;
 390                 *lenp = nlen;
 391         }
 392         linev[used] = line;
 393
 394         return 0;
 395 }
 396
 397 static void dump_hdr(unsigned long long offset, struct ptldebug_header *hdr)
 398 {
 399         fprintf(stderr, "badly-formed record at offset = %llu\n", offset);
 400         fprintf(stderr, "  len = %u\n", hdr->ph_len);
 401         fprintf(stderr, "  flags = %x\n", hdr->ph_flags);
 402         fprintf(stderr, "  subsystem = %x\n", hdr->ph_subsys);
 403         fprintf(stderr, "  mask = %x\n", hdr->ph_mask);
 404         fprintf(stderr, "  cpu_id = %u\n", hdr->ph_cpu_id);
 405         fprintf(stderr, "  type = %u\n", hdr->ph_type);
 406         fprintf(stderr, "  seconds = %u\n", hdr->ph_sec);
 407         fprintf(stderr, "  microseconds = %lu\n", (long)hdr->ph_usec);
 408         fprintf(stderr, "  stack = %u\n", hdr->ph_stack);
 409         fprintf(stderr, "  pid = %u\n", hdr->ph_pid);
 410         fprintf(stderr, "  host pid = %u\n", hdr->ph_extern_pid);
 411         fprintf(stderr, "  line number = %u\n", hdr->ph_line_num);
 412 }
 413
 414 #define HDR_SIZE sizeof(*hdr)
 415
 416 static int parse_buffer(int fdin, int fdout)
 417 {
 418         struct dbg_line *line;
 419         struct ptldebug_header *hdr;
 420         char buf[4097], *ptr;
 421         unsigned long dropped = 0, kept = 0, bad = 0;
 422         struct dbg_line **linev = NULL;
 423         int linev_len = 0;
 424         int rc;
 425
 426         hdr = (void *)buf;
 427
 428         while (1) {
 429                 int first_bad = 1;
 430                 int count;
 431
 432                 count = HDR_SIZE;
 433                 ptr = buf;
 434         readhdr:
 435                 rc = read(fdin, ptr, count);
 436                 if (rc <= 0)
 437                          goto print;
 438
 439                 ptr += rc;
 440                 count -= rc;
 441                 if (count > 0)
 442                         goto readhdr;
 443
 444                 if (hdr->ph_len > 4094 ||       /* is this header bogus? */
 445                     hdr->ph_type >= libcfs_tcd_type_max() ||
 446                     hdr->ph_stack > 65536 ||
 447                     hdr->ph_sec < (1 << 30) ||
 448                     hdr->ph_usec > 1000000000 ||
 449                     hdr->ph_line_num > 65536) {
 450                         if (first_bad)
 451                                 dump_hdr(lseek(fdin, 0, SEEK_CUR), hdr);
 452                         bad += first_bad;
 453                         first_bad = 0;
 454
 455                         /* try to restart on next line */
 456                         while (count < HDR_SIZE && buf[count] != '\n')
 457                                 count++;
 458                         if (buf[count] == '\n')
 459                                 count++; /* move past '\n' */
 460                         if (HDR_SIZE - count > 0) {
 461                                 int left = HDR_SIZE - count;
 462
 463                                 memmove(buf, buf + count, left);
 464                                 ptr = buf + left;
 465
 466                                 goto readhdr;
 467                         }
 468
 469                         continue;
 470                 }
 471
 472                 if (hdr->ph_len == 0)
 473                         continue;
 474
 475                 count = hdr->ph_len - HDR_SIZE;
 476         readmore:
 477                 rc = read(fdin, ptr, count);
 478                 if (rc <= 0)
 479                         break;
 480
 481                 ptr += rc;
 482                 count -= rc;
 483                 if (count > 0)
 484                         goto readmore;
 485
 486                 first_bad = 1;
 487
 488                 if ((hdr->ph_subsys && !(subsystem_mask & hdr->ph_subsys)) ||
 489                     (hdr->ph_mask && !(debug_mask & hdr->ph_mask))) {
 490                         dropped++;
 491                         continue;
 492                 }
 493
 494         retry_alloc:
 495                 line = malloc(sizeof(*line));
 496                 if (line == NULL) {
 497                          if (linev) {
 498                                 fprintf(stderr, "error: line malloc(%u): "
 499                                         "printing accumulated records\n",
 500                                         (unsigned int)sizeof(*line));
 501                                 print_rec(&linev, kept, fdout);
 502
 503                                 goto retry_alloc;
 504                         }
 505                         fprintf(stderr, "error: line malloc(%u): exiting\n",
 506                                 (unsigned int)sizeof(*line));
 507                         break;
 508                 }
 509
 510                 line->hdr = malloc(hdr->ph_len + 1);
 511                 if (line->hdr == NULL) {
 512                         free(line);
 513                         if (linev) {
 514                                 fprintf(stderr, "error: hdr malloc(%u): "
 515                                         "printing accumulated records\n",
 516                                         hdr->ph_len + 1);
 517                                 print_rec(&linev, kept, fdout);
 518
 519                                 goto retry_alloc;
 520                         }
 521                         fprintf(stderr, "error: hdr malloc(%u): exiting\n",
 522                                         hdr->ph_len + 1);
 523                         break;
 524                 }
 525
 526                 ptr = (void *)line->hdr;
 527                 memcpy(line->hdr, buf, hdr->ph_len);
 528                 ptr[hdr->ph_len] = '\0';
 529
 530                 ptr += sizeof(*hdr);
 531                 line->file = ptr;
 532                 ptr += strlen(line->file) + 1;
 533                 line->fn = ptr;
 534                 ptr += strlen(line->fn) + 1;
 535                 line->text = ptr;
 536
 537         retry_add:
 538                 if (add_rec(line, &linev, &linev_len, kept) < 0) {
 539                         if (linev) {
 540                                 fprintf(stderr, "error: add_rec[%u] failed; "
 541                                         "print accumulated records\n",
 542                                         linev_len);
 543                                 print_rec(&linev, kept, fdout);
 544
 545                                 goto retry_add;
 546                         }
 547                         fprintf(stderr, "error: add_rec[0] failed; exiting\n");
 548                         break;
 549                 }
 550                 kept++;
 551         }
 552
 553 print:
 554         if (linev)
 555                 print_rec(&linev, kept, fdout);
 556
 557         printf("Debug log: %lu lines, %lu kept, %lu dropped, %lu bad.\n",
 558                 dropped + kept + bad, kept, dropped, bad);
 559
 560         return 0;
 561 }
 562
 563 int jt_dbg_debug_kernel(int argc, char **argv)
 564 {
 565         char filename[4096];
 566         struct stat st;
 567         int raw = 0;
 568         int save_errno;
 569         int fdin;
 570         int fdout;
 571         int rc;
 572
 573         if (argc > 3) {
 574                 fprintf(stderr, "usage: %s [file] [raw]\n", argv[0]);
 575                 return 0;
 576         }
 577
 578         if (argc > 2) {
 579                 raw = atoi(argv[2]);
 580         } else if (argc > 1 && (argv[1][0] == '0' || argv[1][0] == '1')) {
 581                 raw = atoi(argv[1]);
 582                 argc--;
 583         }
 584
 585         /* If we are dumping raw (which means no conversion step to ASCII)
 586          * then dump directly to any supplied filename, otherwise this is
 587          * just a temp file and we dump to the real file at convert time. */
 588         if (argc > 1 && raw)
 589                 strcpy(filename, argv[1]);
 590         else
 591                 sprintf(filename, "%s"CFS_TIME_T".%u",
 592                         LIBCFS_DEBUG_FILE_PATH_DEFAULT, time(NULL), getpid());
 593
 594         if (stat(filename, &st) == 0 && S_ISREG(st.st_mode))
 595                 unlink(filename);
 596
 597         fdin = dbg_open_ctlhandle(DUMP_KERNEL_CTL_NAME);
 598         if (fdin < 0) {
 599                 fprintf(stderr, "open(dump_kernel) failed: %s\n",
 600                         strerror(errno));
 601                 return 1;
 602         }
 603
 604         rc = dbg_write_cmd(fdin, filename, strlen(filename));
 605         save_errno = errno;
 606         dbg_close_ctlhandle(fdin);
 607         if (rc != 0) {
 608                 fprintf(stderr, "write(%s) failed: %s\n", filename,
 609                         strerror(save_errno));
 610                 return 1;
 611         }
 612
 613         if (raw)
 614                 return 0;
 615
 616         fdin = open(filename, O_RDONLY);
 617         if (fdin < 0) {
 618                 if (errno == ENOENT) /* no dump file created */
 619                         return 0;
 620                 fprintf(stderr, "fopen(%s) failed: %s\n", filename,
 621                         strerror(errno));
 622                 return 1;
 623         }
 624         if (argc > 1) {
 625                 fdout = open(argv[1], O_WRONLY | O_CREAT | O_TRUNC,
 626                              S_IRUSR | S_IWUSR);
 627                 if (fdout < 0) {
 628                         fprintf(stderr, "fopen(%s) failed: %s\n", argv[1],
 629                                 strerror(errno));
 630                         close(fdin);
 631                         return 1;
 632                 }
 633         } else {
 634                 fdout = fileno(stdout);
 635         }
 636
 637         rc = parse_buffer(fdin, fdout);
 638         close(fdin);
 639         if (argc > 1)
 640                 close(fdout);
 641         if (rc) {
 642                 fprintf(stderr, "parse_buffer failed; leaving tmp file %s "
 643                         "behind.\n", filename);
 644         } else {
 645                 rc = unlink(filename);
 646                 if (rc)
 647                         fprintf(stderr, "dumped successfully, but couldn't "
 648                                 "unlink tmp file %s: %s\n", filename,
 649                                 strerror(errno));
 650         }
 651
 652         return rc;
 653 }
 654
 655 int jt_dbg_debug_file(int argc, char **argv)
 656 {
 657         int    fdin;
 658         int    fdout;
 659         int    rc;
 660
 661         if (argc > 3 || argc < 2) {
 662                 fprintf(stderr, "usage: %s <input> [output]\n", argv[0]);
 663                 return 0;
 664         }
 665
 666         fdin = open(argv[1], O_RDONLY | O_LARGEFILE);
 667         if (fdin < 0) {
 668                 fprintf(stderr, "open(%s) failed: %s\n", argv[1],
 669                         strerror(errno));
 670                 return 1;
 671         }
 672         if (argc > 2) {
 673                 fdout = open(argv[2],
 674                              O_CREAT | O_TRUNC | O_WRONLY | O_LARGEFILE,
 675                              0600);
 676                 if (fdout < 0) {
 677                         fprintf(stderr, "open(%s) failed: %s\n", argv[2],
 678                                 strerror(errno));
 679                         close(fdin);
 680                         return 1;
 681                 }
 682         } else {
 683                 fdout = fileno(stdout);
 684         }
 685
 686         rc = parse_buffer(fdin, fdout);
 687
 688         close(fdin);
 689         if (fdout != fileno(stdout))
 690                 close(fdout);
 691
 692         return rc;
 693 }
 694
 695 const char debug_daemon_usage[] = "usage: %s {start file [MB]|stop}\n";
 696
 697 int jt_dbg_debug_daemon(int argc, char **argv)
 698 {
 699         int  rc;
 700         int  fd;
 701
 702         if (argc <= 1) {
 703                 fprintf(stderr, debug_daemon_usage, argv[0]);
 704                 return 1;
 705         }
 706
 707         fd = dbg_open_ctlhandle(DAEMON_CTL_NAME);
 708         if (fd < 0)
 709                 return -1;
 710
 711         rc = -1;
 712         if (strcasecmp(argv[1], "start") == 0) {
 713              if (argc < 3 || argc > 4 ||
 714                     (argc == 4 && strlen(argv[3]) > 5)) {
 715                         fprintf(stderr, debug_daemon_usage, argv[0]);
 716                         goto out;
 717                 }
 718                 if (argc == 4) {
 719                         char       buf[12];
 720                         const long min_size = 10;
 721                         const long max_size = 20480;
 722                         long       size;
 723                         char      *end;
 724
 725                         size = strtoul(argv[3], &end, 0);
 726                         if (size < min_size ||
 727                             size > max_size ||
 728                             *end != 0) {
 729                                 fprintf(stderr, "size %s invalid, must be in "
 730                                         "the range %ld-%ld MB\n", argv[3],
 731                                         min_size, max_size);
 732                                 goto out;
 733                         }
 734                         snprintf(buf, sizeof(buf), "size=%ld", size);
 735                         rc = dbg_write_cmd(fd, buf, strlen(buf));
 736
 737                         if (rc != 0) {
 738                                 fprintf(stderr, "set %s failed: %s\n",
 739                                         buf, strerror(errno));
 740                                 goto out;
 741                         }
 742                 }
 743
 744                 rc = dbg_write_cmd(fd, argv[2], strlen(argv[2]));
 745                 if (rc != 0) {
 746                         fprintf(stderr, "start debug_daemon on %s failed: %s\n",
 747                                 argv[2], strerror(errno));
 748                         goto out;
 749                 }
 750                 rc = 0;
 751                 goto out;
 752         }
 753         if (strcasecmp(argv[1], "stop") == 0) {
 754                 rc = dbg_write_cmd(fd, "stop", 4);
 755                 if (rc != 0) {
 756                         fprintf(stderr, "stopping debug_daemon failed: %s\n",
 757                                 strerror(errno));
 758                         goto out;
 759                 }
 760
 761                 rc = 0;
 762                 goto out;
 763         }
 764
 765         fprintf(stderr, debug_daemon_usage, argv[0]);
 766         rc = -1;
 767 out:
 768         dbg_close_ctlhandle(fd);
 769         return rc;
 770 }
 771
 772 int jt_dbg_clear_debug_buf(int argc, char **argv)
 773 {
 774         int rc;
 775         struct libcfs_ioctl_data data;
 776
 777         if (argc != 1) {
 778                 fprintf(stderr, "usage: %s\n", argv[0]);
 779                 return 0;
 780         }
 781
 782         memset(&data, 0, sizeof(data));
 783         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 784                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 785                 return -1;
 786         }
 787
 788         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_CLEAR_DEBUG, buf);
 789         if (rc) {
 790                 fprintf(stderr, "IOC_LIBCFS_CLEAR_DEBUG failed: %s\n",
 791                         strerror(errno));
 792                 return -1;
 793         }
 794         return 0;
 795 }
 796
 797 int jt_dbg_mark_debug_buf(int argc, char **argv)
 798 {
 799         static char scratch[MAX_MARK_SIZE] = { '\0' };
 800         int rc, max_size = MAX_MARK_SIZE-1;
 801         struct libcfs_ioctl_data data = { 0 };
 802         char *text;
 803         time_t now = time(NULL);
 804
 805         if (argc > 1) {
 806                 int count;
 807                 text = scratch;
 808                 strncpy(text, argv[1], max_size);
 809                 max_size-=strlen(argv[1]);
 810                 for (count = 2; (count < argc) && (max_size > 0); count++){
 811                         strncat(text, " ", max_size);
 812                         max_size -= 1;
 813                         strncat(text, argv[count], max_size);
 814                         max_size -= strlen(argv[count]);
 815                 }
 816         } else {
 817                 text = ctime(&now);
 818         }
 819
 820         data.ioc_inllen1 = strlen(text) + 1;
 821         data.ioc_inlbuf1 = text;
 822         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 823                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 824                 return -1;
 825         }
 826
 827         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_MARK_DEBUG, buf);
 828         if (rc) {
 829                 fprintf(stderr, "IOC_LIBCFS_MARK_DEBUG failed: %s\n",
 830                         strerror(errno));
 831                 return -1;
 832         }
 833         return 0;
 834 }
 835
 836 static struct mod_paths {
 837         char *name, *path;
 838 } mod_paths[] = {
 839         { "libcfs", "libcfs/libcfs" },
 840         { "lnet", "lnet/lnet" },
 841         { "kmxlnd", "lnet/klnds/mxlnd" },
 842         { "ko2iblnd", "lnet/klnds/o2iblnd" },
 843         { "kptllnd", "lnet/klnds/ptllnd" },
 844         { "kgnilnd", "lnet/klnds/gnilnd"},
 845         { "kqswlnd", "lnet/klnds/qswlnd" },
 846         { "kralnd", "lnet/klnds/ralnd" },
 847         { "ksocklnd", "lnet/klnds/socklnd" },
 848         { "ktdilnd", "lnet/klnds/tdilnd" },
 849         { "lvfs", "lustre/lvfs" },
 850         { "obdclass", "lustre/obdclass" },
 851         { "llog_test", "lustre/obdclass" },
 852         { "ptlrpc_gss", "lustre/ptlrpc/gss" },
 853         { "ptlrpc", "lustre/ptlrpc" },
 854         { "gks", "lustre/sec/gks" },
 855         { "gkc", "lustre/sec/gks" },
 856         { "ost", "lustre/ost" },
 857         { "osc", "lustre/osc" },
 858         { "mds", "lustre/mds" },
 859         { "mdc", "lustre/mdc" },
 860         { "lustre", "lustre/llite" },
 861         { "llite_lloop", "lustre/llite" },
 862         { "ldiskfs", "ldiskfs/ldiskfs" },
 863         { "obdecho", "lustre/obdecho" },
 864         { "ldlm", "lustre/ldlm" },
 865         { "obdfilter", "lustre/obdfilter" },
 866         { "lov", "lustre/lov" },
 867         { "lmv", "lustre/lmv" },
 868         { "fsfilt_ldiskfs", "lustre/lvfs" },
 869         { "lquota", "lustre/quota" },
 870         { "mgs", "lustre/mgs" },
 871         { "mgc", "lustre/mgc" },
 872         { "mdt", "lustre/mdt" },
 873         { "mdd", "lustre/mdd" },
 874         { "osd", "lustre/osd" },
 875         { "cmm", "lustre/cmm" },
 876         {"fid", "lustre/fid"},
 877         {"fld", "lustre/fld"},
 878         {"lod", "lustre/lod"},
 879         {"osp", "lustre/osp"},
 880         { "lfsck", "lustre/lfsck" },
 881         {NULL, NULL}
 882 };
 883
 884 int jt_dbg_modules(int argc, char **argv)
 885 {
 886         struct mod_paths *mp;
 887         char *path = "";
 888         const char *proc = "/proc/modules";
 889         char modname[128], buf[4096];
 890         long modaddr;
 891         FILE *file;
 892
 893         if (argc >= 2)
 894                 path = argv[1];
 895         if (argc > 3) {
 896                 printf("%s [path] [kernel]\n", argv[0]);
 897                 return 0;
 898         }
 899
 900         file = fopen(proc, "r");
 901         if (!file) {
 902                 printf("failed open %s: %s\n", proc, strerror(errno));
 903                 return 0;
 904         }
 905
 906         while (fgets(buf, sizeof(buf), file) != NULL) {
 907                 if (sscanf(buf, "%s %*s %*s %*s %*s %lx", modname, &modaddr) == 2) {
 908                         for (mp = mod_paths; mp->name != NULL; mp++) {
 909                                 if (!strcmp(mp->name, modname))
 910                                         break;
 911                         }
 912                         if (mp->name) {
 913                                 printf("add-symbol-file %s%s%s/%s.o 0x%0lx\n",
 914                                         path, path[0] ? "/" : "",
 915                                         mp->path, mp->name, modaddr);
 916                         }
 917                 }
 918         }
 919
 920         fclose(file);
 921         return 0;
 922 }
 923
 924 int jt_dbg_panic(int argc, char **argv)
 925 {
 926         int rc;
 927         struct libcfs_ioctl_data data;
 928
 929         if (argc != 1) {
 930                 fprintf(stderr, "usage: %s\n", argv[0]);
 931                 return 0;
 932         }
 933
 934         memset(&data, 0, sizeof(data));
 935         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 936                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 937                 return -1;
 938         }
 939
 940         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_PANIC, buf);
 941         if (rc) {
 942                 fprintf(stderr, "IOC_LIBCFS_PANIC failed: %s\n",
 943                         strerror(errno));
 944                 return -1;
 945         }
 946         return 0;
 947 }