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/libcfsutil.h>
  47 #include <lnet/lnetctl.h>
  48
  49 static char rawbuf[8192];
  50 static char *buf = rawbuf;
  51 static int max = 8192;
  52 /*static int g_pfd = -1;*/
  53 static int subsystem_mask = ~0;
  54 static int debug_mask = ~0;
  55
  56 #define MAX_MARK_SIZE 256
  57
  58 static const char *libcfs_debug_subsystems[] = LIBCFS_DEBUG_SUBSYS_NAMES;
  59 static const char *libcfs_debug_masks[] = LIBCFS_DEBUG_MASKS_NAMES;
  60
  61 #define DAEMON_CTL_NAME         "/proc/sys/lnet/daemon_file"
  62 #define SUBSYS_DEBUG_CTL_NAME   "/proc/sys/lnet/subsystem_debug"
  63 #define DEBUG_CTL_NAME          "/proc/sys/lnet/debug"
  64 #define DUMP_KERNEL_CTL_NAME    "/proc/sys/lnet/dump_kernel"
  65
  66 static int
  67 dbg_open_ctlhandle(const char *str)
  68 {
  69         int fd;
  70         fd = open(str, O_WRONLY);
  71         if (fd < 0) {
  72                 fprintf(stderr, "open %s failed: %s\n", str,
  73                         strerror(errno));
  74                 return -1;
  75         }
  76         return fd;
  77 }
  78
  79 static void
  80 dbg_close_ctlhandle(int fd)
  81 {
  82         close(fd);
  83 }
  84
  85 static int
  86 dbg_write_cmd(int fd, char *str, int len)
  87 {
  88         int rc = write(fd, str, len);
  89
  90         return (rc == len ? 0 : 1);
  91 }
  92
  93
  94 static int do_debug_mask(char *name, int enable)
  95 {
  96         int found = 0;
  97         int i;
  98
  99         for (i = 0; libcfs_debug_subsystems[i] != NULL; i++) {
 100                 if (strcasecmp(name, libcfs_debug_subsystems[i]) == 0 ||
 101                     strcasecmp(name, "all_subs") == 0) {
 102                         printf("%s output from subsystem \"%s\"\n",
 103                                 enable ? "Enabling" : "Disabling",
 104                                 libcfs_debug_subsystems[i]);
 105                         if (enable)
 106                                 subsystem_mask |= (1 << i);
 107                         else
 108                                 subsystem_mask &= ~(1 << i);
 109                         found = 1;
 110                 }
 111         }
 112         for (i = 0; libcfs_debug_masks[i] != NULL; i++) {
 113                 if (strcasecmp(name, libcfs_debug_masks[i]) == 0 ||
 114                     strcasecmp(name, "all_types") == 0) {
 115                         printf("%s output of type \"%s\"\n",
 116                                 enable ? "Enabling" : "Disabling",
 117                                 libcfs_debug_masks[i]);
 118                         if (enable)
 119                                 debug_mask |= (1 << i);
 120                         else
 121                                 debug_mask &= ~(1 << i);
 122                         found = 1;
 123                 }
 124         }
 125
 126         return found;
 127 }
 128
 129 int dbg_initialize(int argc, char **argv)
 130 {
 131         return 0;
 132 }
 133
 134 int jt_dbg_filter(int argc, char **argv)
 135 {
 136         int i;
 137
 138         if (argc < 2) {
 139                 fprintf(stderr, "usage: %s <subsystem ID or debug mask>\n",
 140                         argv[0]);
 141                 return 0;
 142         }
 143
 144         for (i = 1; i < argc; i++)
 145                 if (!do_debug_mask(argv[i], 0))
 146                         fprintf(stderr, "Unknown subsystem or debug type: %s\n",
 147                                 argv[i]);
 148         return 0;
 149 }
 150
 151 int jt_dbg_show(int argc, char **argv)
 152 {
 153         int i;
 154
 155         if (argc < 2) {
 156                 fprintf(stderr, "usage: %s <subsystem ID or debug mask>\n",
 157                         argv[0]);
 158                 return 0;
 159         }
 160
 161         for (i = 1; i < argc; i++)
 162                 if (!do_debug_mask(argv[i], 1))
 163                         fprintf(stderr, "Unknown subsystem or debug type: %s\n",
 164                                 argv[i]);
 165
 166         return 0;
 167 }
 168
 169 static int applymask(char* procpath, int value)
 170 {
 171         int     rc;
 172         char    buf[64];
 173         int     len = snprintf(buf, 64, "%d", value);
 174
 175         int fd = dbg_open_ctlhandle(procpath);
 176         if (fd == -1) {
 177                 fprintf(stderr, "Unable to open %s: %s\n",
 178                         procpath, strerror(errno));
 179                 return fd;
 180         }
 181         rc = dbg_write_cmd(fd, buf, len+1);
 182         if (rc != 0) {
 183                 fprintf(stderr, "Write to %s failed: %s\n",
 184                         procpath, strerror(errno));
 185         }
 186
 187         dbg_close_ctlhandle(fd);
 188
 189         return rc;
 190 }
 191
 192 static void applymask_all(unsigned int subs_mask, unsigned int debug_mask)
 193 {
 194         if (!dump_filename) {
 195                 applymask(SUBSYS_DEBUG_CTL_NAME, subs_mask);
 196                 applymask(DEBUG_CTL_NAME, debug_mask);
 197         } else {
 198                 struct libcfs_debug_ioctl_data data;
 199
 200                 data.hdr.ioc_len = sizeof(data);
 201                 data.hdr.ioc_version = 0;
 202                 data.subs = subs_mask;
 203                 data.debug = debug_mask;
 204
 205                 dump(OBD_DEV_ID, LIBCFS_IOC_DEBUG_MASK, &data);
 206         }
 207         printf("Applied subsystem_debug=%d, debug=%d to /proc/sys/lnet\n",
 208                subs_mask, debug_mask);
 209 }
 210
 211 int jt_dbg_list(int argc, char **argv)
 212 {
 213         int i;
 214
 215         if (argc != 2) {
 216                 fprintf(stderr, "usage: %s <subs || types>\n", argv[0]);
 217                 return 0;
 218         }
 219
 220         if (strcasecmp(argv[1], "subs") == 0) {
 221                 printf("Subsystems: all_subs");
 222                 for (i = 0; libcfs_debug_subsystems[i] != NULL; i++)
 223                         if (libcfs_debug_subsystems[i][0])
 224                                 printf(", %s", libcfs_debug_subsystems[i]);
 225                 printf("\n");
 226         } else if (strcasecmp(argv[1], "types") == 0) {
 227                 printf("Types: all_types");
 228                 for (i = 0; libcfs_debug_masks[i] != NULL; i++)
 229                         printf(", %s", libcfs_debug_masks[i]);
 230                 printf("\n");
 231         } else if (strcasecmp(argv[1], "applymasks") == 0) {
 232                 applymask_all(subsystem_mask, debug_mask);
 233         }
 234         return 0;
 235 }
 236
 237 /* all strings nul-terminated; only the struct and hdr need to be freed */
 238 struct dbg_line {
 239         struct ptldebug_header *hdr;
 240         char                   *file;
 241         char                   *fn;
 242         char                   *text;
 243 };
 244
 245 static int cmp_rec(const void *p1, const void *p2)
 246 {
 247         struct dbg_line *d1 = *(struct dbg_line **)p1;
 248         struct dbg_line *d2 = *(struct dbg_line **)p2;
 249
 250         if (d1->hdr->ph_sec < d2->hdr->ph_sec)
 251                 return -1;
 252         if (d1->hdr->ph_sec == d2->hdr->ph_sec &&
 253             d1->hdr->ph_usec < d2->hdr->ph_usec)
 254                 return -1;
 255         if (d1->hdr->ph_sec == d2->hdr->ph_sec &&
 256             d1->hdr->ph_usec == d2->hdr->ph_usec)
 257                 return 0;
 258         return 1;
 259 }
 260
 261 static void print_rec(struct dbg_line ***linevp, int used, int fdout)
 262 {
 263         struct dbg_line **linev = *linevp;
 264         int               i;
 265
 266         qsort(linev, used, sizeof(struct dbg_line *), cmp_rec);
 267         for (i = 0; i < used; i++) {
 268                 struct dbg_line         *line = linev[i];
 269                 struct ptldebug_header  *hdr = line->hdr;
 270                 char                     out[4097];
 271                 char                    *buf = out;
 272                 int                      bytes;
 273                 ssize_t                  bytes_written;
 274
 275                 bytes = snprintf(out, sizeof(out),
 276                                 "%08x:%08x:%u.%u%s:%u.%06llu:%u:%u:%u:"
 277                                 "(%s:%u:%s()) %s",
 278                                 hdr->ph_subsys, hdr->ph_mask,
 279                                 hdr->ph_cpu_id, hdr->ph_type,
 280                                 hdr->ph_flags & PH_FLAG_FIRST_RECORD ? "F" : "",
 281                                 hdr->ph_sec, (unsigned long long)hdr->ph_usec,
 282                                 hdr->ph_stack, hdr->ph_pid, hdr->ph_extern_pid,
 283                                 line->file, hdr->ph_line_num, line->fn,
 284                                 line->text);
 285                 while (bytes > 0) {
 286                         bytes_written = write(fdout, buf, bytes);
 287                         if (bytes_written <= 0)
 288                                 break;
 289                         bytes -= bytes_written;
 290                         buf += bytes_written;
 291                 }
 292                 free(line->hdr);
 293                 free(line);
 294         }
 295         free(linev);
 296         *linevp = NULL;
 297 }
 298
 299 static int add_rec(struct dbg_line *line, struct dbg_line ***linevp, int *lenp,
 300                    int used)
 301 {
 302         struct dbg_line **linev = *linevp;
 303
 304         if (used == *lenp) {
 305                 int nlen = *lenp + 4096;
 306                 int nsize = nlen * sizeof(struct dbg_line *);
 307
 308                 linev = realloc(*linevp, nsize);
 309                 if (!linev)
 310                         return -ENOMEM;
 311
 312                 *linevp = linev;
 313                 *lenp = nlen;
 314         }
 315         linev[used] = line;
 316
 317         return 0;
 318 }
 319
 320 static void dump_hdr(unsigned long long offset, struct ptldebug_header *hdr)
 321 {
 322         fprintf(stderr, "badly-formed record at offset = %llu\n", offset);
 323         fprintf(stderr, "  len = %u\n", hdr->ph_len);
 324         fprintf(stderr, "  flags = %x\n", hdr->ph_flags);
 325         fprintf(stderr, "  subsystem = %x\n", hdr->ph_subsys);
 326         fprintf(stderr, "  mask = %x\n", hdr->ph_mask);
 327         fprintf(stderr, "  cpu_id = %u\n", hdr->ph_cpu_id);
 328         fprintf(stderr, "  type = %u\n", hdr->ph_type);
 329         fprintf(stderr, "  seconds = %u\n", hdr->ph_sec);
 330         fprintf(stderr, "  microseconds = %lu\n", (long)hdr->ph_usec);
 331         fprintf(stderr, "  stack = %u\n", hdr->ph_stack);
 332         fprintf(stderr, "  pid = %u\n", hdr->ph_pid);
 333         fprintf(stderr, "  host pid = %u\n", hdr->ph_extern_pid);
 334         fprintf(stderr, "  line number = %u\n", hdr->ph_line_num);
 335 }
 336
 337 #define HDR_SIZE sizeof(*hdr)
 338
 339 static int parse_buffer(int fdin, int fdout)
 340 {
 341         struct dbg_line         *line;
 342         struct ptldebug_header  *hdr;
 343         char                     buf[4097];
 344         char                    *ptr;
 345         unsigned long            dropped = 0;
 346         unsigned long            kept = 0;
 347         unsigned long            bad = 0;
 348         struct dbg_line         **linev = NULL;
 349         int                      linev_len = 0;
 350         int                      rc;
 351
 352         hdr = (void *)buf;
 353
 354         while (1) {
 355                 int first_bad = 1;
 356                 int count;
 357
 358                 count = HDR_SIZE;
 359                 ptr = buf;
 360 readhdr:
 361                 rc = read(fdin, ptr, count);
 362                 if (rc <= 0)
 363                         goto print;
 364
 365                 ptr += rc;
 366                 count -= rc;
 367                 if (count > 0)
 368                         goto readhdr;
 369
 370                 if (hdr->ph_len > 4094 ||       /* is this header bogus? */
 371                     hdr->ph_type >= libcfs_tcd_type_max() ||
 372                     hdr->ph_stack > 65536 ||
 373                     hdr->ph_sec < (1 << 30) ||
 374                     hdr->ph_usec > 1000000000 ||
 375                     hdr->ph_line_num > 65536) {
 376                         if (first_bad)
 377                                 dump_hdr(lseek(fdin, 0, SEEK_CUR), hdr);
 378                         bad += first_bad;
 379                         first_bad = 0;
 380
 381                         /* try to restart on next line */
 382                         while (count < HDR_SIZE && buf[count] != '\n')
 383                                 count++;
 384                         if (buf[count] == '\n')
 385                                 count++; /* move past '\n' */
 386                         if (HDR_SIZE - count > 0) {
 387                                 int left = HDR_SIZE - count;
 388
 389                                 memmove(buf, buf + count, left);
 390                                 ptr = buf + left;
 391
 392                                 goto readhdr;
 393                         }
 394
 395                         continue;
 396                 }
 397
 398                 if (hdr->ph_len == 0)
 399                         continue;
 400
 401                 count = hdr->ph_len - HDR_SIZE;
 402 readmore:
 403                 rc = read(fdin, ptr, count);
 404                 if (rc <= 0)
 405                         break;
 406
 407                 ptr += rc;
 408                 count -= rc;
 409                 if (count > 0)
 410                         goto readmore;
 411
 412                 first_bad = 1;
 413
 414                 if ((hdr->ph_subsys && !(subsystem_mask & hdr->ph_subsys)) ||
 415                     (hdr->ph_mask && !(debug_mask & hdr->ph_mask))) {
 416                         dropped++;
 417                         continue;
 418                 }
 419
 420 retry_alloc:
 421                 line = malloc(sizeof(*line));
 422                 if (line == NULL) {
 423                         if (linev) {
 424                                 fprintf(stderr, "error: line malloc(%u): "
 425                                         "printing accumulated records\n",
 426                                         (unsigned int)sizeof(*line));
 427                                 print_rec(&linev, kept, fdout);
 428
 429                                 goto retry_alloc;
 430                         }
 431                         fprintf(stderr, "error: line malloc(%u): exiting\n",
 432                                 (unsigned int)sizeof(*line));
 433                         break;
 434                 }
 435
 436                 line->hdr = malloc(hdr->ph_len + 1);
 437                 if (line->hdr == NULL) {
 438                         free(line);
 439                         if (linev) {
 440                                 fprintf(stderr, "error: hdr malloc(%u): "
 441                                         "printing accumulated records\n",
 442                                         hdr->ph_len + 1);
 443                                 print_rec(&linev, kept, fdout);
 444
 445                                 goto retry_alloc;
 446                         }
 447                         fprintf(stderr, "error: hdr malloc(%u): exiting\n",
 448                                         hdr->ph_len + 1);
 449                         break;
 450                 }
 451
 452                 ptr = (void *)line->hdr;
 453                 memcpy(line->hdr, buf, hdr->ph_len);
 454                 ptr[hdr->ph_len] = '\0';
 455
 456                 ptr += sizeof(*hdr);
 457                 line->file = ptr;
 458                 ptr += strlen(line->file) + 1;
 459                 line->fn = ptr;
 460                 ptr += strlen(line->fn) + 1;
 461                 line->text = ptr;
 462
 463 retry_add:
 464                 if (add_rec(line, &linev, &linev_len, kept) < 0) {
 465                         if (linev) {
 466                                 fprintf(stderr, "error: add_rec[%u] failed; "
 467                                         "print accumulated records\n",
 468                                         linev_len);
 469                                 print_rec(&linev, kept, fdout);
 470
 471                                 goto retry_add;
 472                         }
 473                         fprintf(stderr, "error: add_rec[0] failed; exiting\n");
 474                         break;
 475                 }
 476                 kept++;
 477         }
 478
 479 print:
 480         if (linev)
 481                 print_rec(&linev, kept, fdout);
 482
 483         printf("Debug log: %lu lines, %lu kept, %lu dropped, %lu bad.\n",
 484                 dropped + kept + bad, kept, dropped, bad);
 485
 486         return 0;
 487 }
 488
 489 int jt_dbg_debug_kernel(int argc, char **argv)
 490 {
 491         struct stat     st;
 492         char            filename[PATH_MAX];
 493         int             raw = 0;
 494         int             save_errno;
 495         int             fdin;
 496         int             fdout;
 497         int             rc;
 498
 499         if (argc > 3) {
 500                 fprintf(stderr, "usage: %s [file] [raw]\n", argv[0]);
 501                 return 0;
 502         }
 503
 504         if (argc > 2) {
 505                 raw = atoi(argv[2]);
 506         } else if (argc > 1 && (argv[1][0] == '0' || argv[1][0] == '1')) {
 507                 raw = atoi(argv[1]);
 508                 argc--;
 509         }
 510
 511         /* If we are dumping raw (which means no conversion step to ASCII)
 512          * then dump directly to any supplied filename, otherwise this is
 513          * just a temp file and we dump to the real file at convert time. */
 514         if (argc > 1 && raw) {
 515                 if (strlen(argv[1]) >= sizeof(filename)) {
 516                         fprintf(stderr, "File name too long: %s\n", argv[1]);
 517                         return 1;
 518                 }
 519                 strncpy(filename, argv[1], sizeof(filename));
 520         } else {
 521                 if (snprintf(filename, sizeof(filename), "%s"CFS_TIME_T".%u",
 522                              LIBCFS_DEBUG_FILE_PATH_DEFAULT, time(NULL),
 523                              getpid())
 524                     >= sizeof(filename)) {
 525                         fprintf(stderr, "File name too long\n");
 526                         return 1;
 527                 }
 528         }
 529
 530         if (stat(filename, &st) == 0 && S_ISREG(st.st_mode))
 531                 unlink(filename);
 532
 533         fdin = dbg_open_ctlhandle(DUMP_KERNEL_CTL_NAME);
 534         if (fdin < 0) {
 535                 fprintf(stderr, "open(dump_kernel) failed: %s\n",
 536                         strerror(errno));
 537                 return 1;
 538         }
 539
 540         rc = dbg_write_cmd(fdin, filename, strlen(filename));
 541         save_errno = errno;
 542         dbg_close_ctlhandle(fdin);
 543         if (rc != 0) {
 544                 fprintf(stderr, "write(%s) failed: %s\n", filename,
 545                         strerror(save_errno));
 546                 return 1;
 547         }
 548
 549         if (raw)
 550                 return 0;
 551
 552         fdin = open(filename, O_RDONLY);
 553         if (fdin < 0) {
 554                 if (errno == ENOENT) /* no dump file created */
 555                         return 0;
 556                 fprintf(stderr, "fopen(%s) failed: %s\n", filename,
 557                         strerror(errno));
 558                 return 1;
 559         }
 560         if (argc > 1) {
 561                 fdout = open(argv[1], O_WRONLY | O_CREAT | O_TRUNC,
 562                              S_IRUSR | S_IWUSR);
 563                 if (fdout < 0) {
 564                         fprintf(stderr, "fopen(%s) failed: %s\n", argv[1],
 565                                 strerror(errno));
 566                         close(fdin);
 567                         return 1;
 568                 }
 569         } else {
 570                 fdout = fileno(stdout);
 571         }
 572
 573         rc = parse_buffer(fdin, fdout);
 574         close(fdin);
 575         if (argc > 1)
 576                 close(fdout);
 577         if (rc) {
 578                 fprintf(stderr, "parse_buffer failed; leaving tmp file %s "
 579                         "behind.\n", filename);
 580         } else {
 581                 rc = unlink(filename);
 582                 if (rc)
 583                         fprintf(stderr, "dumped successfully, but couldn't "
 584                                 "unlink tmp file %s: %s\n", filename,
 585                                 strerror(errno));
 586         }
 587
 588         return rc;
 589 }
 590
 591 int jt_dbg_debug_file(int argc, char **argv)
 592 {
 593         int fdin;
 594         int fdout;
 595         int rc;
 596
 597         if (argc > 3 || argc < 2) {
 598                 fprintf(stderr, "usage: %s <input> [output]\n", argv[0]);
 599                 return 0;
 600         }
 601
 602         fdin = open(argv[1], O_RDONLY | O_LARGEFILE);
 603         if (fdin < 0) {
 604                 fprintf(stderr, "open(%s) failed: %s\n", argv[1],
 605                         strerror(errno));
 606                 return 1;
 607         }
 608         if (argc > 2) {
 609                 fdout = open(argv[2],
 610                              O_CREAT | O_TRUNC | O_WRONLY | O_LARGEFILE,
 611                              0600);
 612                 if (fdout < 0) {
 613                         fprintf(stderr, "open(%s) failed: %s\n", argv[2],
 614                                 strerror(errno));
 615                         close(fdin);
 616                         return 1;
 617                 }
 618         } else {
 619                 fdout = fileno(stdout);
 620         }
 621
 622         rc = parse_buffer(fdin, fdout);
 623
 624         close(fdin);
 625         if (fdout != fileno(stdout))
 626                 close(fdout);
 627
 628         return rc;
 629 }
 630
 631 const char debug_daemon_usage[] = "usage: %s {start file [MB]|stop}\n";
 632
 633 int jt_dbg_debug_daemon(int argc, char **argv)
 634 {
 635         int rc;
 636         int fd;
 637
 638         if (argc <= 1) {
 639                 fprintf(stderr, debug_daemon_usage, argv[0]);
 640                 return 1;
 641         }
 642
 643         fd = dbg_open_ctlhandle(DAEMON_CTL_NAME);
 644         if (fd < 0)
 645                 return -1;
 646
 647         rc = -1;
 648         if (strcasecmp(argv[1], "start") == 0) {
 649                 if (argc < 3 || argc > 4 ||
 650                     (argc == 4 && strlen(argv[3]) > 5)) {
 651                         fprintf(stderr, debug_daemon_usage, argv[0]);
 652                         goto out;
 653                 }
 654                 if (argc == 4) {
 655                         char             buf[12];
 656                         const long       min_size = 10;
 657                         const long       max_size = 20480;
 658                         long             size;
 659                         char            *end;
 660
 661                         size = strtoul(argv[3], &end, 0);
 662                         if (size < min_size ||
 663                             size > max_size ||
 664                             *end != 0) {
 665                                 fprintf(stderr, "size %s invalid, must be in "
 666                                         "the range %ld-%ld MB\n", argv[3],
 667                                         min_size, max_size);
 668                                 goto out;
 669                         }
 670                         snprintf(buf, sizeof(buf), "size=%ld", size);
 671                         rc = dbg_write_cmd(fd, buf, strlen(buf));
 672
 673                         if (rc != 0) {
 674                                 fprintf(stderr, "set %s failed: %s\n",
 675                                         buf, strerror(errno));
 676                                 goto out;
 677                         }
 678                 }
 679
 680                 rc = dbg_write_cmd(fd, argv[2], strlen(argv[2]));
 681                 if (rc != 0) {
 682                         fprintf(stderr, "start debug_daemon on %s failed: %s\n",
 683                                 argv[2], strerror(errno));
 684                         goto out;
 685                 }
 686                 rc = 0;
 687                 goto out;
 688         }
 689         if (strcasecmp(argv[1], "stop") == 0) {
 690                 rc = dbg_write_cmd(fd, "stop", 4);
 691                 if (rc != 0) {
 692                         fprintf(stderr, "stopping debug_daemon failed: %s\n",
 693                                 strerror(errno));
 694                         goto out;
 695                 }
 696
 697                 rc = 0;
 698                 goto out;
 699         }
 700
 701         fprintf(stderr, debug_daemon_usage, argv[0]);
 702         rc = -1;
 703 out:
 704         dbg_close_ctlhandle(fd);
 705         return rc;
 706 }
 707
 708 int jt_dbg_clear_debug_buf(int argc, char **argv)
 709 {
 710         int                      rc;
 711         struct libcfs_ioctl_data data;
 712
 713         if (argc != 1) {
 714                 fprintf(stderr, "usage: %s\n", argv[0]);
 715                 return 0;
 716         }
 717
 718         memset(&data, 0, sizeof(data));
 719         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 720                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 721                 return -1;
 722         }
 723
 724         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_CLEAR_DEBUG, buf);
 725         if (rc) {
 726                 fprintf(stderr, "IOC_LIBCFS_CLEAR_DEBUG failed: %s\n",
 727                         strerror(errno));
 728                 return -1;
 729         }
 730         return 0;
 731 }
 732
 733 int jt_dbg_mark_debug_buf(int argc, char **argv)
 734 {
 735         static char              scratch[MAX_MARK_SIZE] = "";
 736         struct libcfs_ioctl_data data;
 737         char                    *text;
 738         int                      rc;
 739
 740         memset(&data, 0, sizeof(data));
 741
 742         if (argc > 1) {
 743                 int count, max_size = sizeof(scratch) - 1;
 744
 745                 strncpy(scratch, argv[1], max_size);
 746                 max_size -= strlen(argv[1]);
 747                 for (count = 2; (count < argc) && (max_size > 1); count++) {
 748                         strncat(scratch, " ", max_size);
 749                         max_size -= 1;
 750                         strncat(scratch, argv[count], max_size);
 751                         max_size -= strlen(argv[count]);
 752                 }
 753                 scratch[sizeof(scratch) - 1] = '\0';
 754                 text = scratch;
 755         } else {
 756                 time_t now = time(NULL);
 757                 text = ctime(&now);
 758         }
 759
 760         data.ioc_inllen1 = strlen(text) + 1;
 761         data.ioc_inlbuf1 = text;
 762
 763         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 764                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 765                 return -1;
 766         }
 767
 768         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_MARK_DEBUG, buf);
 769         if (rc) {
 770                 fprintf(stderr, "IOC_LIBCFS_MARK_DEBUG failed: %s\n",
 771                         strerror(errno));
 772                 return -1;
 773         }
 774         return 0;
 775 }
 776
 777 static struct mod_paths {
 778         char *name, *path;
 779 } mod_paths[] = {
 780         { "libcfs", "libcfs/libcfs" },
 781         { "lnet", "lnet/lnet" },
 782         { "ko2iblnd", "lnet/klnds/o2iblnd" },
 783         { "kgnilnd", "lnet/klnds/gnilnd"},
 784         { "ksocklnd", "lnet/klnds/socklnd" },
 785         { "obdclass", "lustre/obdclass" },
 786         { "llog_test", "lustre/obdclass" },
 787         { "ptlrpc_gss", "lustre/ptlrpc/gss" },
 788         { "ptlrpc", "lustre/ptlrpc" },
 789         { "gks", "lustre/sec/gks" },
 790         { "gkc", "lustre/sec/gks" },
 791         { "ost", "lustre/ost" },
 792         { "osc", "lustre/osc" },
 793         { "mds", "lustre/mds" },
 794         { "mdc", "lustre/mdc" },
 795         { "lustre", "lustre/llite" },
 796         { "llite_lloop", "lustre/llite" },
 797         { "ldiskfs", "ldiskfs" },
 798         { "obdecho", "lustre/obdecho" },
 799         { "ldlm", "lustre/ldlm" },
 800         { "obdfilter", "lustre/obdfilter" },
 801         { "lov", "lustre/lov" },
 802         { "lmv", "lustre/lmv" },
 803         { "lquota", "lustre/quota" },
 804         { "mgs", "lustre/mgs" },
 805         { "mgc", "lustre/mgc" },
 806         { "mdt", "lustre/mdt" },
 807         { "mdd", "lustre/mdd" },
 808         { "osd", "lustre/osd" },
 809         { "cmm", "lustre/cmm" },
 810         {"fid", "lustre/fid"},
 811         {"fld", "lustre/fld"},
 812         {"lod", "lustre/lod"},
 813         {"osp", "lustre/osp"},
 814         { "lfsck", "lustre/lfsck" },
 815         {NULL, NULL}
 816 };
 817
 818 int jt_dbg_modules(int argc, char **argv)
 819 {
 820         struct mod_paths *mp;
 821         char             *path = "";
 822         const char       *proc = "/proc/modules";
 823         char              modname[128];
 824         char              buf[4096];
 825         unsigned long     modaddr;
 826         FILE             *file;
 827
 828         if (argc >= 2)
 829                 path = argv[1];
 830         if (argc > 3) {
 831                 printf("%s [path] [kernel]\n", argv[0]);
 832                 return 0;
 833         }
 834
 835         file = fopen(proc, "r");
 836         if (!file) {
 837                 printf("failed open %s: %s\n", proc, strerror(errno));
 838                 return 0;
 839         }
 840
 841         while (fgets(buf, sizeof(buf), file) != NULL) {
 842                 if (sscanf(buf, "%s %*s %*s %*s %*s %lx",
 843                            modname, &modaddr) == 2) {
 844                         for (mp = mod_paths; mp->name != NULL; mp++) {
 845                                 if (!strcmp(mp->name, modname))
 846                                         break;
 847                         }
 848                         if (mp->name) {
 849                                 printf("add-symbol-file %s%s%s/%s.o 0x%0lx\n",
 850                                         path, path[0] ? "/" : "",
 851                                         mp->path, mp->name, modaddr);
 852                         }
 853                 }
 854         }
 855
 856         fclose(file);
 857         return 0;
 858 }
 859
 860 int jt_dbg_panic(int argc, char **argv)
 861 {
 862         int                      rc;
 863         struct libcfs_ioctl_data data;
 864
 865         if (argc != 1) {
 866                 fprintf(stderr, "usage: %s\n", argv[0]);
 867                 return 0;
 868         }
 869
 870         memset(&data, 0, sizeof(data));
 871         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 872                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 873                 return -1;
 874         }
 875
 876         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_PANIC, buf);
 877         if (rc) {
 878                 fprintf(stderr, "IOC_LIBCFS_PANIC failed: %s\n",
 879                         strerror(errno));
 880                 return -1;
 881         }
 882         return 0;
 883 }