lnet/utils/debug.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * GPL HEADER START
   5  *
   6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 only,
  10  * as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License version 2 for more details (a copy is included
  16  * in the LICENSE file that accompanied this code).
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * version 2 along with this program; If not, see
  20  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  21  *
  22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  23  * CA 95054 USA or visit www.sun.com if you need additional information or
  24  * have any questions.
  25  *
  26  * GPL HEADER END
  27  */
  28 /*
  29  * Copyright  2008 Sun Microsystems, Inc. All rights reserved
  30  * Use is subject to license terms.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  *
  36  * lnet/utils/debug.c
  37  * Some day I'll split all of this functionality into a cfs_debug module
  38  * of its own. That day is not today.
  39  */
  40
  41 #define __USE_FILE_OFFSET64
  42 #ifndef _GNU_SOURCE
  43 #define  _GNU_SOURCE
  44 #endif
  45
  46 #include <libcfs/libcfsutil.h>
  47 #include <lnet/lnetctl.h>
  48
  49
  50 static char rawbuf[8192];
  51 static char *buf = rawbuf;
  52 static int max = 8192;
  53 /*static int g_pfd = -1;*/
  54 static int subsystem_mask = ~0;
  55 static int debug_mask = ~0;
  56
  57 #define MAX_MARK_SIZE 256
  58
  59 static const char *libcfs_debug_subsystems[] =
  60         {"undefined", "mdc", "mds", "osc",
  61          "ost", "class", "log", "llite",
  62          "rpc", "mgmt", "lnet", "lnd",
  63          "pinger", "filter", "", "echo",
  64          "ldlm", "lov", "lquota", "",
  65          "", "", "", "lmv",
  66          "", "sec", "gss", "",
  67          "mgc", "mgs", "fid", "fld", NULL};
  68 static const char *libcfs_debug_masks[] =
  69         {"trace", "inode", "super", "ext2",
  70          "malloc", "cache", "info", "ioctl",
  71          "neterror", "net", "warning", "buffs",
  72          "other", "dentry", "nettrace", "page",
  73          "dlmtrace", "error", "emerg", "ha",
  74          "rpctrace", "vfstrace", "reada", "mmap",
  75          "config", "console", "quota", "sec", NULL};
  76
  77 #ifdef __linux__
  78
  79 #define DAEMON_CTL_NAME         "/proc/sys/lnet/daemon_file"
  80 #define SUBSYS_DEBUG_CTL_NAME   "/proc/sys/lnet/subsystem_debug"
  81 #define DEBUG_CTL_NAME          "/proc/sys/lnet/debug"
  82 #define DUMP_KERNEL_CTL_NAME    "/proc/sys/lnet/dump_kernel"
  83
  84 static int
  85 dbg_open_ctlhandle(const char *str)
  86 {
  87         int fd;
  88         fd = open(str, O_WRONLY);
  89         if (fd < 0) {
  90                 fprintf(stderr, "open %s failed: %s\n", str,
  91                         strerror(errno));
  92                 return -1;
  93         }
  94         return fd;
  95 }
  96
  97 static void
  98 dbg_close_ctlhandle(int fd)
  99 {
 100         close(fd);
 101 }
 102
 103 static int
 104 dbg_write_cmd(int fd, char *str, int len)
 105 {
 106         int    rc  = write(fd, str, len);
 107
 108         return (rc == len ? 0 : 1);
 109 }
 110
 111 #elif defined(__DARWIN__)
 112
 113 #define DAEMON_CTL_NAME         "lnet.trace_daemon"
 114 #define SUBSYS_DEBUG_CTL_NAME   "lnet.subsystem_debug"
 115 #define DEBUG_CTL_NAME          "lnet.debug"
 116 #define DUMP_KERNEL_CTL_NAME    "lnet.trace_dumpkernel"
 117
 118 static char     sysctl_name[128];
 119 static int
 120 dbg_open_ctlhandle(const char *str)
 121 {
 122
 123         if (strlen(str)+1 > 128) {
 124                 fprintf(stderr, "sysctl name is too long: %s.\n", str);
 125                 return -1;
 126         }
 127         strcpy(sysctl_name, str);
 128
 129         return 0;
 130 }
 131
 132 static void
 133 dbg_close_ctlhandle(int fd)
 134 {
 135         sysctl_name[0] = '\0';
 136         return;
 137 }
 138
 139 static int
 140 dbg_write_cmd(int fd, char *str, int len)
 141 {
 142         int     rc;
 143
 144         rc = sysctlbyname(sysctl_name, NULL, NULL, str, len+1);
 145         if (rc != 0) {
 146                 fprintf(stderr, "sysctl %s with cmd (%s) error: %d\n",
 147                         sysctl_name, str, errno);
 148         }
 149         return (rc == 0 ? 0: 1);
 150 }
 151
 152 #elif defined(__WINNT__)
 153
 154 #define DAEMON_CTL_NAME         "/proc/sys/lnet/daemon_file"
 155 #define SUBSYS_DEBUG_CTL_NAME   "/proc/sys/lnet/subsystem_debug"
 156 #define DEBUG_CTL_NAME          "/proc/sys/lnet/debug"
 157 #define DUMP_KERNEL_CTL_NAME    "/proc/sys/lnet/dump_kernel"
 158
 159 static int
 160 dbg_open_ctlhandle(const char *str)
 161 {
 162         int fd;
 163         fd = cfs_proc_open((char *)str, (int)O_WRONLY);
 164         if (fd < 0) {
 165                 fprintf(stderr, "open %s failed: %s\n", str,
 166                         strerror(errno));
 167                 return -1;
 168         }
 169         return fd;
 170 }
 171
 172 static void
 173 dbg_close_ctlhandle(int fd)
 174 {
 175         cfs_proc_close(fd);
 176 }
 177
 178 static int
 179 dbg_write_cmd(int fd, char *str, int len)
 180 {
 181         int    rc  = cfs_proc_write(fd, str, len);
 182
 183         return (rc == len ? 0 : 1);
 184 }
 185
 186 #else
 187 #error - Unknown sysctl convention.
 188 #endif
 189
 190 static int do_debug_mask(char *name, int enable)
 191 {
 192         int found = 0, i;
 193
 194         for (i = 0; libcfs_debug_subsystems[i] != NULL; i++) {
 195                 if (strcasecmp(name, libcfs_debug_subsystems[i]) == 0 ||
 196                     strcasecmp(name, "all_subs") == 0) {
 197                         printf("%s output from subsystem \"%s\"\n",
 198                                 enable ? "Enabling" : "Disabling",
 199                                 libcfs_debug_subsystems[i]);
 200                         if (enable)
 201                                 subsystem_mask |= (1 << i);
 202                         else
 203                                 subsystem_mask &= ~(1 << i);
 204                         found = 1;
 205                 }
 206         }
 207         for (i = 0; libcfs_debug_masks[i] != NULL; i++) {
 208                 if (strcasecmp(name, libcfs_debug_masks[i]) == 0 ||
 209                     strcasecmp(name, "all_types") == 0) {
 210                         printf("%s output of type \"%s\"\n",
 211                                 enable ? "Enabling" : "Disabling",
 212                                 libcfs_debug_masks[i]);
 213                         if (enable)
 214                                 debug_mask |= (1 << i);
 215                         else
 216                                 debug_mask &= ~(1 << i);
 217                         found = 1;
 218                 }
 219         }
 220
 221         return found;
 222 }
 223
 224 int dbg_initialize(int argc, char **argv)
 225 {
 226         return 0;
 227 }
 228
 229 int jt_dbg_filter(int argc, char **argv)
 230 {
 231         int   i;
 232
 233         if (argc < 2) {
 234                 fprintf(stderr, "usage: %s <subsystem ID or debug mask>\n",
 235                         argv[0]);
 236                 return 0;
 237         }
 238
 239         for (i = 1; i < argc; i++)
 240                 if (!do_debug_mask(argv[i], 0))
 241                         fprintf(stderr, "Unknown subsystem or debug type: %s\n",
 242                                 argv[i]);
 243         return 0;
 244 }
 245
 246 int jt_dbg_show(int argc, char **argv)
 247 {
 248         int    i;
 249
 250         if (argc < 2) {
 251                 fprintf(stderr, "usage: %s <subsystem ID or debug mask>\n",
 252                         argv[0]);
 253                 return 0;
 254         }
 255
 256         for (i = 1; i < argc; i++)
 257                 if (!do_debug_mask(argv[i], 1))
 258                         fprintf(stderr, "Unknown subsystem or debug type: %s\n",
 259                                 argv[i]);
 260
 261         return 0;
 262 }
 263
 264 static int applymask(char* procpath, int value)
 265 {
 266         int rc;
 267         char buf[64];
 268         int len = snprintf(buf, 64, "%d", value);
 269
 270         int fd = dbg_open_ctlhandle(procpath);
 271         if (fd == -1) {
 272                 fprintf(stderr, "Unable to open %s: %s\n",
 273                         procpath, strerror(errno));
 274                 return fd;
 275         }
 276         rc = dbg_write_cmd(fd, buf, len+1);
 277         if (rc != 0) {
 278                 fprintf(stderr, "Write to %s failed: %s\n",
 279                         procpath, strerror(errno));
 280         }
 281
 282         dbg_close_ctlhandle(fd);
 283
 284         return rc;
 285 }
 286
 287 static void applymask_all(unsigned int subs_mask, unsigned int debug_mask)
 288 {
 289         if (!dump_filename) {
 290                 applymask(SUBSYS_DEBUG_CTL_NAME, subs_mask);
 291                 applymask(DEBUG_CTL_NAME, debug_mask);
 292         } else {
 293                 struct libcfs_debug_ioctl_data data;
 294
 295                 data.hdr.ioc_len = sizeof(data);
 296                 data.hdr.ioc_version = 0;
 297                 data.subs = subs_mask;
 298                 data.debug = debug_mask;
 299
 300                 dump(OBD_DEV_ID, LIBCFS_IOC_DEBUG_MASK, &data);
 301         }
 302         printf("Applied subsystem_debug=%d, debug=%d to /proc/sys/lnet\n",
 303                subs_mask, debug_mask);
 304 }
 305
 306 int jt_dbg_list(int argc, char **argv)
 307 {
 308         int i;
 309
 310         if (argc != 2) {
 311                 fprintf(stderr, "usage: %s <subs || types>\n", argv[0]);
 312                 return 0;
 313         }
 314
 315         if (strcasecmp(argv[1], "subs") == 0) {
 316                 printf("Subsystems: all_subs");
 317                 for (i = 0; libcfs_debug_subsystems[i] != NULL; i++)
 318                         if (libcfs_debug_subsystems[i][0])
 319                                 printf(", %s", libcfs_debug_subsystems[i]);
 320                 printf("\n");
 321         } else if (strcasecmp(argv[1], "types") == 0) {
 322                 printf("Types: all_types");
 323                 for (i = 0; libcfs_debug_masks[i] != NULL; i++)
 324                         printf(", %s", libcfs_debug_masks[i]);
 325                 printf("\n");
 326         } else if (strcasecmp(argv[1], "applymasks") == 0) {
 327                 applymask_all(subsystem_mask, debug_mask);
 328         }
 329         return 0;
 330 }
 331
 332 /* all strings nul-terminated; only the struct and hdr need to be freed */
 333 struct dbg_line {
 334         struct ptldebug_header *hdr;
 335         char *file;
 336         char *fn;
 337         char *text;
 338 };
 339
 340 static int cmp_rec(const void *p1, const void *p2)
 341 {
 342         struct dbg_line *d1 = *(struct dbg_line **)p1;
 343         struct dbg_line *d2 = *(struct dbg_line **)p2;
 344
 345         if (d1->hdr->ph_sec < d2->hdr->ph_sec)
 346                 return -1;
 347         if (d1->hdr->ph_sec == d2->hdr->ph_sec &&
 348             d1->hdr->ph_usec < d2->hdr->ph_usec)
 349                 return -1;
 350         if (d1->hdr->ph_sec == d2->hdr->ph_sec &&
 351             d1->hdr->ph_usec == d2->hdr->ph_usec)
 352                 return 0;
 353         return 1;
 354 }
 355
 356 static void print_rec(struct dbg_line ***linevp, int used, int fdout)
 357 {
 358         struct dbg_line **linev = *linevp;
 359         int i;
 360
 361         qsort(linev, used, sizeof(struct dbg_line *), cmp_rec);
 362         for (i = 0; i < used; i++) {
 363                 struct dbg_line *line = linev[i];
 364                 struct ptldebug_header *hdr = line->hdr;
 365                 char out[4097];
 366                 char *buf = out;
 367                 int bytes;
 368                 ssize_t bytes_written;
 369
 370                 bytes = sprintf(out, "%08x:%08x:%u:%u.%06llu:%u:%u:%u:(%s:%u:%s()) %s",
 371                                 hdr->ph_subsys, hdr->ph_mask, hdr->ph_cpu_id,
 372                                 hdr->ph_sec, (unsigned long long)hdr->ph_usec,
 373                                 hdr->ph_stack, hdr->ph_pid, hdr->ph_extern_pid,
 374                                 line->file, hdr->ph_line_num, line->fn, line->text);
 375                 while (bytes > 0) {
 376                         bytes_written = write(fdout, buf, bytes);
 377                         if (bytes_written <= 0)
 378                                 break;
 379                         bytes -= bytes_written;
 380                         buf += bytes_written;
 381                 }
 382                 free(line->hdr);
 383                 free(line);
 384         }
 385         free(linev);
 386         *linevp = NULL;
 387 }
 388
 389 static int add_rec(struct dbg_line *line, struct dbg_line ***linevp, int *lenp,
 390                    int used)
 391 {
 392         struct dbg_line **linev = *linevp;
 393
 394         if (used == *lenp) {
 395                 int nlen = *lenp + 4096;
 396                 int nsize = nlen * sizeof(struct dbg_line *);
 397
 398                 linev = realloc(*linevp, nsize);
 399                 if (!linev)
 400                         return -ENOMEM;
 401
 402                 *linevp = linev;
 403                 *lenp = nlen;
 404         }
 405         linev[used] = line;
 406
 407         return 0;
 408 }
 409
 410 static void dump_hdr(unsigned long long offset, struct ptldebug_header *hdr)
 411 {
 412         fprintf(stderr, "badly-formed record at offset = %llu\n", offset);
 413         fprintf(stderr, "  len = %u\n", hdr->ph_len);
 414         fprintf(stderr, "  flags = %x\n", hdr->ph_flags);
 415         fprintf(stderr, "  subsystem = %x\n", hdr->ph_subsys);
 416         fprintf(stderr, "  mask = %x\n", hdr->ph_mask);
 417         fprintf(stderr, "  cpu_id = %u\n", hdr->ph_cpu_id);
 418         fprintf(stderr, "  seconds = %u\n", hdr->ph_sec);
 419         fprintf(stderr, "  microseconds = %lu\n", (long)hdr->ph_usec);
 420         fprintf(stderr, "  stack = %u\n", hdr->ph_stack);
 421         fprintf(stderr, "  pid = %u\n", hdr->ph_pid);
 422         fprintf(stderr, "  host pid = %u\n", hdr->ph_extern_pid);
 423         fprintf(stderr, "  line number = %u\n", hdr->ph_line_num);
 424 }
 425
 426 #define HDR_SIZE sizeof(*hdr)
 427
 428 static int parse_buffer(int fdin, int fdout)
 429 {
 430         struct dbg_line *line;
 431         struct ptldebug_header *hdr;
 432         char buf[4097], *ptr;
 433         unsigned long dropped = 0, kept = 0, bad = 0;
 434         struct dbg_line **linev = NULL;
 435         int linev_len = 0;
 436         int rc;
 437
 438         hdr = (void *)buf;
 439
 440         while (1) {
 441                 int first_bad = 1;
 442                 int count;
 443
 444                 count = HDR_SIZE;
 445                 ptr = buf;
 446         readhdr:
 447                 rc = read(fdin, ptr, count);
 448                 if (rc <= 0)
 449                          goto print;
 450
 451                 ptr += rc;
 452                 count -= rc;
 453                 if (count > 0)
 454                         goto readhdr;
 455
 456                 if (hdr->ph_len > 4094 ||       /* is this header bogus? */
 457                     hdr->ph_cpu_id > 65536 ||
 458                     hdr->ph_stack > 65536 ||
 459                     hdr->ph_sec < (1 << 30) ||
 460                     hdr->ph_usec > 1000000000 ||
 461                     hdr->ph_line_num > 65536) {
 462                         if (first_bad)
 463                                 dump_hdr(lseek(fdin, 0, SEEK_CUR), hdr);
 464                         bad += first_bad;
 465                         first_bad = 0;
 466
 467                         /* try to restart on next line */
 468                         while (count < HDR_SIZE && buf[count] != '\n')
 469                                 count++;
 470                         if (buf[count] == '\n')
 471                                 count++; /* move past '\n' */
 472                         if (HDR_SIZE - count > 0) {
 473                                 int left = HDR_SIZE - count;
 474
 475                                 memmove(buf, buf + count, left);
 476                                 ptr = buf + left;
 477
 478                                 goto readhdr;
 479                         }
 480
 481                         continue;
 482                 }
 483
 484                 if (hdr->ph_len == 0)
 485                         continue;
 486
 487                 count = hdr->ph_len - HDR_SIZE;
 488         readmore:
 489                 rc = read(fdin, ptr, count);
 490                 if (rc <= 0)
 491                         break;
 492
 493                 ptr += rc;
 494                 count -= rc;
 495                 if (count > 0)
 496                         goto readmore;
 497
 498                 first_bad = 1;
 499
 500                 if ((hdr->ph_subsys && !(subsystem_mask & hdr->ph_subsys)) ||
 501                     (hdr->ph_mask && !(debug_mask & hdr->ph_mask))) {
 502                         dropped++;
 503                         continue;
 504                 }
 505
 506         retry_alloc:
 507                 line = malloc(sizeof(*line));
 508                 if (line == NULL) {
 509                          if (linev) {
 510                                 fprintf(stderr, "error: line malloc(%u): "
 511                                         "printing accumulated records\n",
 512                                         (unsigned int)sizeof(*line));
 513                                 print_rec(&linev, kept, fdout);
 514
 515                                 goto retry_alloc;
 516                         }
 517                         fprintf(stderr, "error: line malloc(%u): exiting\n",
 518                                 (unsigned int)sizeof(*line));
 519                         break;
 520                 }
 521
 522                 line->hdr = malloc(hdr->ph_len + 1);
 523                 if (line->hdr == NULL) {
 524                         free(line);
 525                         if (linev) {
 526                                 fprintf(stderr, "error: hdr malloc(%u): "
 527                                         "printing accumulated records\n",
 528                                         hdr->ph_len + 1);
 529                                 print_rec(&linev, kept, fdout);
 530
 531                                 goto retry_alloc;
 532                         }
 533                         fprintf(stderr, "error: hdr malloc(%u): exiting\n",
 534                                         hdr->ph_len + 1);
 535                         break;
 536                 }
 537
 538                 ptr = (void *)line->hdr;
 539                 memcpy(line->hdr, buf, hdr->ph_len);
 540                 ptr[hdr->ph_len] = '\0';
 541
 542                 ptr += sizeof(*hdr);
 543                 line->file = ptr;
 544                 ptr += strlen(line->file) + 1;
 545                 line->fn = ptr;
 546                 ptr += strlen(line->fn) + 1;
 547                 line->text = ptr;
 548
 549         retry_add:
 550                 if (add_rec(line, &linev, &linev_len, kept) < 0) {
 551                         if (linev) {
 552                                 fprintf(stderr, "error: add_rec[%u] failed; "
 553                                         "print accumulated records\n",
 554                                         linev_len);
 555                                 print_rec(&linev, kept, fdout);
 556
 557                                 goto retry_add;
 558                         }
 559                         fprintf(stderr, "error: add_rec[0] failed; exiting\n");
 560                         break;
 561                 }
 562                 kept++;
 563         }
 564
 565 print:
 566         if (linev)
 567                 print_rec(&linev, kept, fdout);
 568
 569         printf("Debug log: %lu lines, %lu kept, %lu dropped, %lu bad.\n",
 570                 dropped + kept + bad, kept, dropped, bad);
 571
 572         return 0;
 573 }
 574
 575 int jt_dbg_debug_kernel(int argc, char **argv)
 576 {
 577         char filename[4096];
 578         struct stat st;
 579         int raw = 0;
 580         int save_errno;
 581         int fdin;
 582         int fdout;
 583         int rc;
 584
 585         if (argc > 3) {
 586                 fprintf(stderr, "usage: %s [file] [raw]\n", argv[0]);
 587                 return 0;
 588         }
 589
 590         if (argc > 2) {
 591                 raw = atoi(argv[2]);
 592         } else if (argc > 1 && (argv[1][0] == '0' || argv[1][0] == '1')) {
 593                 raw = atoi(argv[1]);
 594                 argc--;
 595         }
 596
 597         /* If we are dumping raw (which means no conversion step to ASCII)
 598          * then dump directly to any supplied filename, otherwise this is
 599          * just a temp file and we dump to the real file at convert time. */
 600         if (argc > 1 && raw)
 601                 strcpy(filename, argv[1]);
 602         else
 603                 sprintf(filename, "%s"CFS_TIME_T".%u",
 604                         LIBCFS_DEBUG_FILE_PATH_DEFAULT, time(NULL), getpid());
 605
 606         if (stat(filename, &st) == 0 && S_ISREG(st.st_mode))
 607                 unlink(filename);
 608
 609         fdin = dbg_open_ctlhandle(DUMP_KERNEL_CTL_NAME);
 610         if (fdin < 0) {
 611                 fprintf(stderr, "open(dump_kernel) failed: %s\n",
 612                         strerror(errno));
 613                 return 1;
 614         }
 615
 616         rc = dbg_write_cmd(fdin, filename, strlen(filename));
 617         save_errno = errno;
 618         dbg_close_ctlhandle(fdin);
 619         if (rc != 0) {
 620                 fprintf(stderr, "write(%s) failed: %s\n", filename,
 621                         strerror(save_errno));
 622                 return 1;
 623         }
 624
 625         if (raw)
 626                 return 0;
 627
 628         fdin = open(filename, O_RDONLY);
 629         if (fdin < 0) {
 630                 if (errno == ENOENT) /* no dump file created */
 631                         return 0;
 632                 fprintf(stderr, "fopen(%s) failed: %s\n", filename,
 633                         strerror(errno));
 634                 return 1;
 635         }
 636         if (argc > 1) {
 637                 fdout = open(argv[1], O_WRONLY | O_CREAT | O_TRUNC,
 638                              S_IRUSR | S_IWUSR);
 639                 if (fdout < 0) {
 640                         fprintf(stderr, "fopen(%s) failed: %s\n", argv[1],
 641                                 strerror(errno));
 642                         close(fdin);
 643                         return 1;
 644                 }
 645         } else {
 646                 fdout = fileno(stdout);
 647         }
 648
 649         rc = parse_buffer(fdin, fdout);
 650         close(fdin);
 651         if (argc > 1)
 652                 close(fdout);
 653         if (rc) {
 654                 fprintf(stderr, "parse_buffer failed; leaving tmp file %s "
 655                         "behind.\n", filename);
 656         } else {
 657                 rc = unlink(filename);
 658                 if (rc)
 659                         fprintf(stderr, "dumped successfully, but couldn't "
 660                                 "unlink tmp file %s: %s\n", filename,
 661                                 strerror(errno));
 662         }
 663
 664         return rc;
 665 }
 666
 667 int jt_dbg_debug_file(int argc, char **argv)
 668 {
 669         int    fdin;
 670         int    fdout;
 671         int    rc;
 672
 673         if (argc > 3 || argc < 2) {
 674                 fprintf(stderr, "usage: %s <input> [output]\n", argv[0]);
 675                 return 0;
 676         }
 677
 678         fdin = open(argv[1], O_RDONLY | O_LARGEFILE);
 679         if (fdin < 0) {
 680                 fprintf(stderr, "open(%s) failed: %s\n", argv[1],
 681                         strerror(errno));
 682                 return 1;
 683         }
 684         if (argc > 2) {
 685                 fdout = open(argv[2],
 686                              O_CREAT | O_TRUNC | O_WRONLY | O_LARGEFILE,
 687                              0600);
 688                 if (fdout < 0) {
 689                         fprintf(stderr, "open(%s) failed: %s\n", argv[2],
 690                                 strerror(errno));
 691                         close(fdin);
 692                         return 1;
 693                 }
 694         } else {
 695                 fdout = fileno(stdout);
 696         }
 697
 698         rc = parse_buffer(fdin, fdout);
 699
 700         close(fdin);
 701         if (fdout != fileno(stdout))
 702                 close(fdout);
 703
 704         return rc;
 705 }
 706
 707 const char debug_daemon_usage[] = "usage: %s {start file [MB]|stop}\n";
 708
 709 int jt_dbg_debug_daemon(int argc, char **argv)
 710 {
 711         int  rc;
 712         int  fd;
 713
 714         if (argc <= 1) {
 715                 fprintf(stderr, debug_daemon_usage, argv[0]);
 716                 return 1;
 717         }
 718
 719         fd = dbg_open_ctlhandle(DAEMON_CTL_NAME);
 720         if (fd < 0)
 721                 return -1;
 722
 723         rc = -1;
 724         if (strcasecmp(argv[1], "start") == 0) {
 725              if (argc < 3 || argc > 4 ||
 726                     (argc == 4 && strlen(argv[3]) > 5)) {
 727                         fprintf(stderr, debug_daemon_usage, argv[0]);
 728                         goto out;
 729                 }
 730                 if (argc == 4) {
 731                         char       buf[12];
 732                         const long min_size = 10;
 733                         const long max_size = 20480;
 734                         long       size;
 735                         char      *end;
 736
 737                         size = strtoul(argv[3], &end, 0);
 738                         if (size < min_size ||
 739                             size > max_size ||
 740                             *end != 0) {
 741                                 fprintf(stderr, "size %s invalid, must be in "
 742                                         "the range %ld-%ld MB\n", argv[3],
 743                                         min_size, max_size);
 744                                 goto out;
 745                         }
 746                         snprintf(buf, sizeof(buf), "size=%ld", size);
 747                         rc = dbg_write_cmd(fd, buf, strlen(buf));
 748
 749                         if (rc != 0) {
 750                                 fprintf(stderr, "set %s failed: %s\n",
 751                                         buf, strerror(errno));
 752                                 goto out;
 753                         }
 754                 }
 755
 756                 rc = dbg_write_cmd(fd, argv[2], strlen(argv[2]));
 757                 if (rc != 0) {
 758                         fprintf(stderr, "start debug_daemon on %s failed: %s\n",
 759                                 argv[2], strerror(errno));
 760                         goto out;
 761                 }
 762                 rc = 0;
 763                 goto out;
 764         }
 765         if (strcasecmp(argv[1], "stop") == 0) {
 766                 rc = dbg_write_cmd(fd, "stop", 4);
 767                 if (rc != 0) {
 768                         fprintf(stderr, "stopping debug_daemon failed: %s\n",
 769                                 strerror(errno));
 770                         goto out;
 771                 }
 772
 773                 rc = 0;
 774                 goto out;
 775         }
 776
 777         fprintf(stderr, debug_daemon_usage, argv[0]);
 778         rc = -1;
 779 out:
 780         dbg_close_ctlhandle(fd);
 781         return rc;
 782 }
 783
 784 int jt_dbg_clear_debug_buf(int argc, char **argv)
 785 {
 786         int rc;
 787         struct libcfs_ioctl_data data;
 788
 789         if (argc != 1) {
 790                 fprintf(stderr, "usage: %s\n", argv[0]);
 791                 return 0;
 792         }
 793
 794         memset(&data, 0, sizeof(data));
 795         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 796                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 797                 return -1;
 798         }
 799
 800         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_CLEAR_DEBUG, buf);
 801         if (rc) {
 802                 fprintf(stderr, "IOC_LIBCFS_CLEAR_DEBUG failed: %s\n",
 803                         strerror(errno));
 804                 return -1;
 805         }
 806         return 0;
 807 }
 808
 809 int jt_dbg_mark_debug_buf(int argc, char **argv)
 810 {
 811         static char scratch[MAX_MARK_SIZE] = { '\0' };
 812         int rc, max_size = MAX_MARK_SIZE-1;
 813         struct libcfs_ioctl_data data = { 0 };
 814         char *text;
 815         time_t now = time(NULL);
 816
 817         if (argc > 1) {
 818                 int count;
 819                 text = scratch;
 820                 strncpy(text, argv[1], max_size);
 821                 max_size-=strlen(argv[1]);
 822                 for (count = 2; (count < argc) && (max_size > 0); count++){
 823                         strncat(text, " ", max_size);
 824                         max_size -= 1;
 825                         strncat(text, argv[count], max_size);
 826                         max_size -= strlen(argv[count]);
 827                 }
 828         } else {
 829                 text = ctime(&now);
 830         }
 831
 832         data.ioc_inllen1 = strlen(text) + 1;
 833         data.ioc_inlbuf1 = text;
 834         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 835                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 836                 return -1;
 837         }
 838
 839         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_MARK_DEBUG, buf);
 840         if (rc) {
 841                 fprintf(stderr, "IOC_LIBCFS_MARK_DEBUG failed: %s\n",
 842                         strerror(errno));
 843                 return -1;
 844         }
 845         return 0;
 846 }
 847
 848 static struct mod_paths {
 849         char *name, *path;
 850 } mod_paths[] = {
 851         {"libcfs", "libcfs/libcfs"},
 852         {"lnet", "lnet/lnet"},
 853         {"kciblnd", "lnet/klnds/ciblnd"},
 854         {"kgmlnd", "lnet/klnds/gmlnd"},
 855         {"kmxlnd", "lnet/klnds/mxlnd"},
 856         {"kiiblnd", "lnet/klnds/iiblnd"},
 857         {"ko2iblnd", "lnet/klnds/o2iblnd"},
 858         {"kopeniblnd", "lnet/klnds/openiblnd"},
 859         {"kptllnd", "lnet/klnds/ptllnd"},
 860         {"kqswlnd", "lnet/klnds/qswlnd"},
 861         {"kralnd", "lnet/klnds/ralnd"},
 862         {"ksocklnd", "lnet/klnds/socklnd"},
 863         {"ktdilnd", "lnet/klnds/tdilnd"},
 864         {"kviblnd", "lnet/klnds/viblnd"},
 865         {"lvfs", "lustre/lvfs"},
 866         {"obdclass", "lustre/obdclass"},
 867         {"llog_test", "lustre/obdclass"},
 868         {"ptlrpc_gss", "lustre/ptlrpc/gss"},
 869         {"ptlrpc", "lustre/ptlrpc"},
 870         {"gks", "lustre/sec/gks"},
 871         {"gkc", "lustre/sec/gks"},
 872         {"ost", "lustre/ost"},
 873         {"osc", "lustre/osc"},
 874         {"mds", "lustre/mds"},
 875         {"mdc", "lustre/mdc"},
 876         {"llite", "lustre/llite"},
 877         {"lustre", "lustre/llite"},
 878         {"llite_lloop", "lustre/llite"},
 879         {"ldiskfs", "ldiskfs/ldiskfs"},
 880         {"smfs", "lustre/smfs"},
 881         {"obdecho", "lustre/obdecho"},
 882         {"ldlm", "lustre/ldlm"},
 883         {"obdfilter", "lustre/obdfilter"},
 884         {"lov", "lustre/lov"},
 885         {"lmv", "lustre/lmv"},
 886         {"fsfilt_ext3", "lustre/lvfs"},
 887         {"fsfilt_reiserfs", "lustre/lvfs"},
 888         {"fsfilt_smfs", "lustre/lvfs"},
 889         {"fsfilt_ldiskfs", "lustre/lvfs"},
 890         {"mds_ext3", "lustre/mds"},
 891         {"cobd", "lustre/cobd"},
 892         {"cmobd", "lustre/cmobd"},
 893         {"lquota", "lustre/quota"},
 894         {"mgs", "lustre/mgs"},
 895         {"mgc", "lustre/mgc"},
 896         {"mdt", "lustre/mdt"},
 897         {"mdd", "lustre/mdd"},
 898         {"osd", "lustre/osd"},
 899         {"cmm", "lustre/cmm"},
 900         {"fid", "lustre/fid"},
 901         {"fld", "lustre/fld"},
 902         {NULL, NULL}
 903 };
 904
 905 static int jt_dbg_modules_2_4(int argc, char **argv)
 906 {
 907         return -EINVAL;
 908 }
 909
 910 static int jt_dbg_modules_2_5(int argc, char **argv)
 911 {
 912         struct mod_paths *mp;
 913         char *path = "";
 914         char *kernel = "linux";
 915         const char *proc = "/proc/modules";
 916         char modname[128], buf[4096];
 917         long modaddr;
 918         FILE *file;
 919
 920         if (argc >= 2)
 921                 path = argv[1];
 922         if (argc == 3)
 923                 kernel = argv[2];
 924         if (argc > 3) {
 925                 printf("%s [path] [kernel]\n", argv[0]);
 926                 return 0;
 927         }
 928
 929         file = fopen(proc, "r");
 930         if (!file) {
 931                 printf("failed open %s: %s\n", proc, strerror(errno));
 932                 return 0;
 933         }
 934
 935         while (fgets(buf, sizeof(buf), file) != NULL) {
 936                 if (sscanf(buf, "%s %*s %*s %*s %*s %lx", modname, &modaddr) == 2) {
 937                         for (mp = mod_paths; mp->name != NULL; mp++) {
 938                                 if (!strcmp(mp->name, modname))
 939                                         break;
 940                         }
 941                         if (mp->name) {
 942                                 printf("add-symbol-file %s%s%s/%s.o 0x%0lx\n",
 943                                        path, path[0] ? "/" : "",
 944                                        mp->path, mp->name, modaddr);
 945                         }
 946                 }
 947         }
 948
 949         fclose(file);
 950         return 0;
 951 }
 952
 953 int jt_dbg_modules(int argc, char **argv)
 954 {
 955         int rc = 0;
 956         struct utsname sysinfo;
 957
 958         rc = uname(&sysinfo);
 959         if (rc) {
 960                 printf("uname() failed: %s\n", strerror(errno));
 961                 return 0;
 962         }
 963
 964         if (sysinfo.release[2] > '4') {
 965                 return jt_dbg_modules_2_5(argc, argv);
 966         } else {
 967                 return jt_dbg_modules_2_4(argc, argv);
 968         }
 969
 970         return 0;
 971 }
 972
 973 int jt_dbg_panic(int argc, char **argv)
 974 {
 975         int rc;
 976         struct libcfs_ioctl_data data;
 977
 978         if (argc != 1) {
 979                 fprintf(stderr, "usage: %s\n", argv[0]);
 980                 return 0;
 981         }
 982
 983         memset(&data, 0, sizeof(data));
 984         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 985                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 986                 return -1;
 987         }
 988
 989         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_PANIC, buf);
 990         if (rc) {
 991                 fprintf(stderr, "IOC_LIBCFS_PANIC failed: %s\n",
 992                         strerror(errno));
 993                 return -1;
 994         }
 995         return 0;
 996 }