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 (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
  30  * Use is subject to license terms.
  31  *
  32  * Copyright (c) 2011, Whamcloud, Inc.
  33  */
  34 /*
  35  * This file is part of Lustre, http://www.lustre.org/
  36  * Lustre is a trademark of Sun Microsystems, Inc.
  37  *
  38  * lnet/utils/debug.c
  39  * Some day I'll split all of this functionality into a cfs_debug module
  40  * of its own. That day is not today.
  41  */
  42
  43 #define __USE_FILE_OFFSET64
  44 #ifndef _GNU_SOURCE
  45 #define  _GNU_SOURCE
  46 #endif
  47
  48 #include <libcfs/libcfsutil.h>
  49 #include <lnet/lnetctl.h>
  50
  51
  52 static char rawbuf[8192];
  53 static char *buf = rawbuf;
  54 static int max = 8192;
  55 /*static int g_pfd = -1;*/
  56 static int subsystem_mask = ~0;
  57 static int debug_mask = ~0;
  58
  59 #define MAX_MARK_SIZE 256
  60
  61 static const char *libcfs_debug_subsystems[] =
  62         {"undefined", "mdc", "mds", "osc",
  63          "ost", "class", "log", "llite",
  64          "rpc", "mgmt", "lnet", "lnd",
  65          "pinger", "filter", "", "echo",
  66          "ldlm", "lov", "lquota", "",
  67          "", "", "", "lmv",
  68          "", "sec", "gss", "",
  69          "mgc", "mgs", "fid", "fld", NULL};
  70 static const char *libcfs_debug_masks[] =
  71         {"trace", "inode", "super", "ext2",
  72          "malloc", "cache", "info", "ioctl",
  73          "neterror", "net", "warning", "buffs",
  74          "other", "dentry", "nettrace", "page",
  75          "dlmtrace", "error", "emerg", "ha",
  76          "rpctrace", "vfstrace", "reada", "mmap",
  77          "config", "console", "quota", "sec", NULL};
  78
  79 #ifdef __linux__
  80
  81 #define DAEMON_CTL_NAME         "/proc/sys/lnet/daemon_file"
  82 #define SUBSYS_DEBUG_CTL_NAME   "/proc/sys/lnet/subsystem_debug"
  83 #define DEBUG_CTL_NAME          "/proc/sys/lnet/debug"
  84 #define DUMP_KERNEL_CTL_NAME    "/proc/sys/lnet/dump_kernel"
  85
  86 static int
  87 dbg_open_ctlhandle(const char *str)
  88 {
  89         int fd;
  90         fd = open(str, O_WRONLY);
  91         if (fd < 0) {
  92                 fprintf(stderr, "open %s failed: %s\n", str,
  93                         strerror(errno));
  94                 return -1;
  95         }
  96         return fd;
  97 }
  98
  99 static void
 100 dbg_close_ctlhandle(int fd)
 101 {
 102         close(fd);
 103 }
 104
 105 static int
 106 dbg_write_cmd(int fd, char *str, int len)
 107 {
 108         int    rc  = write(fd, str, len);
 109
 110         return (rc == len ? 0 : 1);
 111 }
 112
 113 #elif defined(__DARWIN__)
 114
 115 #define DAEMON_CTL_NAME         "lnet.trace_daemon"
 116 #define SUBSYS_DEBUG_CTL_NAME   "lnet.subsystem_debug"
 117 #define DEBUG_CTL_NAME          "lnet.debug"
 118 #define DUMP_KERNEL_CTL_NAME    "lnet.trace_dumpkernel"
 119
 120 static char     sysctl_name[128];
 121 static int
 122 dbg_open_ctlhandle(const char *str)
 123 {
 124
 125         if (strlen(str)+1 > 128) {
 126                 fprintf(stderr, "sysctl name is too long: %s.\n", str);
 127                 return -1;
 128         }
 129         strcpy(sysctl_name, str);
 130
 131         return 0;
 132 }
 133
 134 static void
 135 dbg_close_ctlhandle(int fd)
 136 {
 137         sysctl_name[0] = '\0';
 138         return;
 139 }
 140
 141 static int
 142 dbg_write_cmd(int fd, char *str, int len)
 143 {
 144         int     rc;
 145
 146         rc = sysctlbyname(sysctl_name, NULL, NULL, str, len+1);
 147         if (rc != 0) {
 148                 fprintf(stderr, "sysctl %s with cmd (%s) error: %d\n",
 149                         sysctl_name, str, errno);
 150         }
 151         return (rc == 0 ? 0: 1);
 152 }
 153
 154 #elif defined(__WINNT__)
 155
 156 #define DAEMON_CTL_NAME         "/proc/sys/lnet/daemon_file"
 157 #define SUBSYS_DEBUG_CTL_NAME   "/proc/sys/lnet/subsystem_debug"
 158 #define DEBUG_CTL_NAME          "/proc/sys/lnet/debug"
 159 #define DUMP_KERNEL_CTL_NAME    "/proc/sys/lnet/dump_kernel"
 160
 161 static int
 162 dbg_open_ctlhandle(const char *str)
 163 {
 164         int fd;
 165         fd = cfs_proc_open((char *)str, (int)O_WRONLY);
 166         if (fd < 0) {
 167                 fprintf(stderr, "open %s failed: %s\n", str,
 168                         strerror(errno));
 169                 return -1;
 170         }
 171         return fd;
 172 }
 173
 174 static void
 175 dbg_close_ctlhandle(int fd)
 176 {
 177         cfs_proc_close(fd);
 178 }
 179
 180 static int
 181 dbg_write_cmd(int fd, char *str, int len)
 182 {
 183         int    rc  = cfs_proc_write(fd, str, len);
 184
 185         return (rc == len ? 0 : 1);
 186 }
 187
 188 #else
 189 #error - Unknown sysctl convention.
 190 #endif
 191
 192 static int do_debug_mask(char *name, int enable)
 193 {
 194         int found = 0, i;
 195
 196         for (i = 0; libcfs_debug_subsystems[i] != NULL; i++) {
 197                 if (strcasecmp(name, libcfs_debug_subsystems[i]) == 0 ||
 198                     strcasecmp(name, "all_subs") == 0) {
 199                         printf("%s output from subsystem \"%s\"\n",
 200                                 enable ? "Enabling" : "Disabling",
 201                                 libcfs_debug_subsystems[i]);
 202                         if (enable)
 203                                 subsystem_mask |= (1 << i);
 204                         else
 205                                 subsystem_mask &= ~(1 << i);
 206                         found = 1;
 207                 }
 208         }
 209         for (i = 0; libcfs_debug_masks[i] != NULL; i++) {
 210                 if (strcasecmp(name, libcfs_debug_masks[i]) == 0 ||
 211                     strcasecmp(name, "all_types") == 0) {
 212                         printf("%s output of type \"%s\"\n",
 213                                 enable ? "Enabling" : "Disabling",
 214                                 libcfs_debug_masks[i]);
 215                         if (enable)
 216                                 debug_mask |= (1 << i);
 217                         else
 218                                 debug_mask &= ~(1 << i);
 219                         found = 1;
 220                 }
 221         }
 222
 223         return found;
 224 }
 225
 226 int dbg_initialize(int argc, char **argv)
 227 {
 228         return 0;
 229 }
 230
 231 int jt_dbg_filter(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], 0))
 243                         fprintf(stderr, "Unknown subsystem or debug type: %s\n",
 244                                 argv[i]);
 245         return 0;
 246 }
 247
 248 int jt_dbg_show(int argc, char **argv)
 249 {
 250         int    i;
 251
 252         if (argc < 2) {
 253                 fprintf(stderr, "usage: %s <subsystem ID or debug mask>\n",
 254                         argv[0]);
 255                 return 0;
 256         }
 257
 258         for (i = 1; i < argc; i++)
 259                 if (!do_debug_mask(argv[i], 1))
 260                         fprintf(stderr, "Unknown subsystem or debug type: %s\n",
 261                                 argv[i]);
 262
 263         return 0;
 264 }
 265
 266 static int applymask(char* procpath, int value)
 267 {
 268         int rc;
 269         char buf[64];
 270         int len = snprintf(buf, 64, "%d", value);
 271
 272         int fd = dbg_open_ctlhandle(procpath);
 273         if (fd == -1) {
 274                 fprintf(stderr, "Unable to open %s: %s\n",
 275                         procpath, strerror(errno));
 276                 return fd;
 277         }
 278         rc = dbg_write_cmd(fd, buf, len+1);
 279         if (rc != 0) {
 280                 fprintf(stderr, "Write to %s failed: %s\n",
 281                         procpath, strerror(errno));
 282         }
 283
 284         dbg_close_ctlhandle(fd);
 285
 286         return rc;
 287 }
 288
 289 static void applymask_all(unsigned int subs_mask, unsigned int debug_mask)
 290 {
 291         if (!dump_filename) {
 292                 applymask(SUBSYS_DEBUG_CTL_NAME, subs_mask);
 293                 applymask(DEBUG_CTL_NAME, debug_mask);
 294         } else {
 295                 struct libcfs_debug_ioctl_data data;
 296
 297                 data.hdr.ioc_len = sizeof(data);
 298                 data.hdr.ioc_version = 0;
 299                 data.subs = subs_mask;
 300                 data.debug = debug_mask;
 301
 302                 dump(OBD_DEV_ID, LIBCFS_IOC_DEBUG_MASK, &data);
 303         }
 304         printf("Applied subsystem_debug=%d, debug=%d to /proc/sys/lnet\n",
 305                subs_mask, debug_mask);
 306 }
 307
 308 int jt_dbg_list(int argc, char **argv)
 309 {
 310         int i;
 311
 312         if (argc != 2) {
 313                 fprintf(stderr, "usage: %s <subs || types>\n", argv[0]);
 314                 return 0;
 315         }
 316
 317         if (strcasecmp(argv[1], "subs") == 0) {
 318                 printf("Subsystems: all_subs");
 319                 for (i = 0; libcfs_debug_subsystems[i] != NULL; i++)
 320                         if (libcfs_debug_subsystems[i][0])
 321                                 printf(", %s", libcfs_debug_subsystems[i]);
 322                 printf("\n");
 323         } else if (strcasecmp(argv[1], "types") == 0) {
 324                 printf("Types: all_types");
 325                 for (i = 0; libcfs_debug_masks[i] != NULL; i++)
 326                         printf(", %s", libcfs_debug_masks[i]);
 327                 printf("\n");
 328         } else if (strcasecmp(argv[1], "applymasks") == 0) {
 329                 applymask_all(subsystem_mask, debug_mask);
 330         }
 331         return 0;
 332 }
 333
 334 /* all strings nul-terminated; only the struct and hdr need to be freed */
 335 struct dbg_line {
 336         struct ptldebug_header *hdr;
 337         char *file;
 338         char *fn;
 339         char *text;
 340 };
 341
 342 static int cmp_rec(const void *p1, const void *p2)
 343 {
 344         struct dbg_line *d1 = *(struct dbg_line **)p1;
 345         struct dbg_line *d2 = *(struct dbg_line **)p2;
 346
 347         if (d1->hdr->ph_sec < d2->hdr->ph_sec)
 348                 return -1;
 349         if (d1->hdr->ph_sec == d2->hdr->ph_sec &&
 350             d1->hdr->ph_usec < d2->hdr->ph_usec)
 351                 return -1;
 352         if (d1->hdr->ph_sec == d2->hdr->ph_sec &&
 353             d1->hdr->ph_usec == d2->hdr->ph_usec)
 354                 return 0;
 355         return 1;
 356 }
 357
 358 static void print_rec(struct dbg_line ***linevp, int used, int fdout)
 359 {
 360         struct dbg_line **linev = *linevp;
 361         int i;
 362
 363         qsort(linev, used, sizeof(struct dbg_line *), cmp_rec);
 364         for (i = 0; i < used; i++) {
 365                 struct dbg_line *line = linev[i];
 366                 struct ptldebug_header *hdr = line->hdr;
 367                 char out[4097];
 368                 char *buf = out;
 369                 int bytes;
 370                 ssize_t bytes_written;
 371
 372                 bytes = sprintf(out, "%08x:%08x:%u.%u%s:%u.%06llu:%u:%u:%u:(%s:%u:%s()) %s",
 373                                 hdr->ph_subsys, hdr->ph_mask,
 374                                 hdr->ph_cpu_id, hdr->ph_type,
 375                                 hdr->ph_flags & PH_FLAG_FIRST_RECORD ? "F" : "",
 376                                 hdr->ph_sec, (unsigned long long)hdr->ph_usec,
 377                                 hdr->ph_stack, hdr->ph_pid, hdr->ph_extern_pid,
 378                                 line->file, hdr->ph_line_num, line->fn, line->text);
 379                 while (bytes > 0) {
 380                         bytes_written = write(fdout, buf, bytes);
 381                         if (bytes_written <= 0)
 382                                 break;
 383                         bytes -= bytes_written;
 384                         buf += bytes_written;
 385                 }
 386                 free(line->hdr);
 387                 free(line);
 388         }
 389         free(linev);
 390         *linevp = NULL;
 391 }
 392
 393 static int add_rec(struct dbg_line *line, struct dbg_line ***linevp, int *lenp,
 394                    int used)
 395 {
 396         struct dbg_line **linev = *linevp;
 397
 398         if (used == *lenp) {
 399                 int nlen = *lenp + 4096;
 400                 int nsize = nlen * sizeof(struct dbg_line *);
 401
 402                 linev = realloc(*linevp, nsize);
 403                 if (!linev)
 404                         return -ENOMEM;
 405
 406                 *linevp = linev;
 407                 *lenp = nlen;
 408         }
 409         linev[used] = line;
 410
 411         return 0;
 412 }
 413
 414 static void dump_hdr(unsigned long long offset, struct ptldebug_header *hdr)
 415 {
 416         fprintf(stderr, "badly-formed record at offset = %llu\n", offset);
 417         fprintf(stderr, "  len = %u\n", hdr->ph_len);
 418         fprintf(stderr, "  flags = %x\n", hdr->ph_flags);
 419         fprintf(stderr, "  subsystem = %x\n", hdr->ph_subsys);
 420         fprintf(stderr, "  mask = %x\n", hdr->ph_mask);
 421         fprintf(stderr, "  cpu_id = %u\n", hdr->ph_cpu_id);
 422         fprintf(stderr, "  type = %u\n", hdr->ph_type);
 423         fprintf(stderr, "  seconds = %u\n", hdr->ph_sec);
 424         fprintf(stderr, "  microseconds = %lu\n", (long)hdr->ph_usec);
 425         fprintf(stderr, "  stack = %u\n", hdr->ph_stack);
 426         fprintf(stderr, "  pid = %u\n", hdr->ph_pid);
 427         fprintf(stderr, "  host pid = %u\n", hdr->ph_extern_pid);
 428         fprintf(stderr, "  line number = %u\n", hdr->ph_line_num);
 429 }
 430
 431 #define HDR_SIZE sizeof(*hdr)
 432
 433 static int parse_buffer(int fdin, int fdout)
 434 {
 435         struct dbg_line *line;
 436         struct ptldebug_header *hdr;
 437         char buf[4097], *ptr;
 438         unsigned long dropped = 0, kept = 0, bad = 0;
 439         struct dbg_line **linev = NULL;
 440         int linev_len = 0;
 441         int rc;
 442
 443         hdr = (void *)buf;
 444
 445         while (1) {
 446                 int first_bad = 1;
 447                 int count;
 448
 449                 count = HDR_SIZE;
 450                 ptr = buf;
 451         readhdr:
 452                 rc = read(fdin, ptr, count);
 453                 if (rc <= 0)
 454                          goto print;
 455
 456                 ptr += rc;
 457                 count -= rc;
 458                 if (count > 0)
 459                         goto readhdr;
 460
 461                 if (hdr->ph_len > 4094 ||       /* is this header bogus? */
 462                     hdr->ph_type >= libcfs_tcd_type_max() ||
 463                     hdr->ph_stack > 65536 ||
 464                     hdr->ph_sec < (1 << 30) ||
 465                     hdr->ph_usec > 1000000000 ||
 466                     hdr->ph_line_num > 65536) {
 467                         if (first_bad)
 468                                 dump_hdr(lseek(fdin, 0, SEEK_CUR), hdr);
 469                         bad += first_bad;
 470                         first_bad = 0;
 471
 472                         /* try to restart on next line */
 473                         while (count < HDR_SIZE && buf[count] != '\n')
 474                                 count++;
 475                         if (buf[count] == '\n')
 476                                 count++; /* move past '\n' */
 477                         if (HDR_SIZE - count > 0) {
 478                                 int left = HDR_SIZE - count;
 479
 480                                 memmove(buf, buf + count, left);
 481                                 ptr = buf + left;
 482
 483                                 goto readhdr;
 484                         }
 485
 486                         continue;
 487                 }
 488
 489                 if (hdr->ph_len == 0)
 490                         continue;
 491
 492                 count = hdr->ph_len - HDR_SIZE;
 493         readmore:
 494                 rc = read(fdin, ptr, count);
 495                 if (rc <= 0)
 496                         break;
 497
 498                 ptr += rc;
 499                 count -= rc;
 500                 if (count > 0)
 501                         goto readmore;
 502
 503                 first_bad = 1;
 504
 505                 if ((hdr->ph_subsys && !(subsystem_mask & hdr->ph_subsys)) ||
 506                     (hdr->ph_mask && !(debug_mask & hdr->ph_mask))) {
 507                         dropped++;
 508                         continue;
 509                 }
 510
 511         retry_alloc:
 512                 line = malloc(sizeof(*line));
 513                 if (line == NULL) {
 514                          if (linev) {
 515                                 fprintf(stderr, "error: line malloc(%u): "
 516                                         "printing accumulated records\n",
 517                                         (unsigned int)sizeof(*line));
 518                                 print_rec(&linev, kept, fdout);
 519
 520                                 goto retry_alloc;
 521                         }
 522                         fprintf(stderr, "error: line malloc(%u): exiting\n",
 523                                 (unsigned int)sizeof(*line));
 524                         break;
 525                 }
 526
 527                 line->hdr = malloc(hdr->ph_len + 1);
 528                 if (line->hdr == NULL) {
 529                         free(line);
 530                         if (linev) {
 531                                 fprintf(stderr, "error: hdr malloc(%u): "
 532                                         "printing accumulated records\n",
 533                                         hdr->ph_len + 1);
 534                                 print_rec(&linev, kept, fdout);
 535
 536                                 goto retry_alloc;
 537                         }
 538                         fprintf(stderr, "error: hdr malloc(%u): exiting\n",
 539                                         hdr->ph_len + 1);
 540                         break;
 541                 }
 542
 543                 ptr = (void *)line->hdr;
 544                 memcpy(line->hdr, buf, hdr->ph_len);
 545                 ptr[hdr->ph_len] = '\0';
 546
 547                 ptr += sizeof(*hdr);
 548                 line->file = ptr;
 549                 ptr += strlen(line->file) + 1;
 550                 line->fn = ptr;
 551                 ptr += strlen(line->fn) + 1;
 552                 line->text = ptr;
 553
 554         retry_add:
 555                 if (add_rec(line, &linev, &linev_len, kept) < 0) {
 556                         if (linev) {
 557                                 fprintf(stderr, "error: add_rec[%u] failed; "
 558                                         "print accumulated records\n",
 559                                         linev_len);
 560                                 print_rec(&linev, kept, fdout);
 561
 562                                 goto retry_add;
 563                         }
 564                         fprintf(stderr, "error: add_rec[0] failed; exiting\n");
 565                         break;
 566                 }
 567                 kept++;
 568         }
 569
 570 print:
 571         if (linev)
 572                 print_rec(&linev, kept, fdout);
 573
 574         printf("Debug log: %lu lines, %lu kept, %lu dropped, %lu bad.\n",
 575                 dropped + kept + bad, kept, dropped, bad);
 576
 577         return 0;
 578 }
 579
 580 int jt_dbg_debug_kernel(int argc, char **argv)
 581 {
 582         char filename[4096];
 583         struct stat st;
 584         int raw = 0;
 585         int save_errno;
 586         int fdin;
 587         int fdout;
 588         int rc;
 589
 590         if (argc > 3) {
 591                 fprintf(stderr, "usage: %s [file] [raw]\n", argv[0]);
 592                 return 0;
 593         }
 594
 595         if (argc > 2) {
 596                 raw = atoi(argv[2]);
 597         } else if (argc > 1 && (argv[1][0] == '0' || argv[1][0] == '1')) {
 598                 raw = atoi(argv[1]);
 599                 argc--;
 600         }
 601
 602         /* If we are dumping raw (which means no conversion step to ASCII)
 603          * then dump directly to any supplied filename, otherwise this is
 604          * just a temp file and we dump to the real file at convert time. */
 605         if (argc > 1 && raw)
 606                 strcpy(filename, argv[1]);
 607         else
 608                 sprintf(filename, "%s"CFS_TIME_T".%u",
 609                         LIBCFS_DEBUG_FILE_PATH_DEFAULT, time(NULL), getpid());
 610
 611         if (stat(filename, &st) == 0 && S_ISREG(st.st_mode))
 612                 unlink(filename);
 613
 614         fdin = dbg_open_ctlhandle(DUMP_KERNEL_CTL_NAME);
 615         if (fdin < 0) {
 616                 fprintf(stderr, "open(dump_kernel) failed: %s\n",
 617                         strerror(errno));
 618                 return 1;
 619         }
 620
 621         rc = dbg_write_cmd(fdin, filename, strlen(filename));
 622         save_errno = errno;
 623         dbg_close_ctlhandle(fdin);
 624         if (rc != 0) {
 625                 fprintf(stderr, "write(%s) failed: %s\n", filename,
 626                         strerror(save_errno));
 627                 return 1;
 628         }
 629
 630         if (raw)
 631                 return 0;
 632
 633         fdin = open(filename, O_RDONLY);
 634         if (fdin < 0) {
 635                 if (errno == ENOENT) /* no dump file created */
 636                         return 0;
 637                 fprintf(stderr, "fopen(%s) failed: %s\n", filename,
 638                         strerror(errno));
 639                 return 1;
 640         }
 641         if (argc > 1) {
 642                 fdout = open(argv[1], O_WRONLY | O_CREAT | O_TRUNC,
 643                              S_IRUSR | S_IWUSR);
 644                 if (fdout < 0) {
 645                         fprintf(stderr, "fopen(%s) failed: %s\n", argv[1],
 646                                 strerror(errno));
 647                         close(fdin);
 648                         return 1;
 649                 }
 650         } else {
 651                 fdout = fileno(stdout);
 652         }
 653
 654         rc = parse_buffer(fdin, fdout);
 655         close(fdin);
 656         if (argc > 1)
 657                 close(fdout);
 658         if (rc) {
 659                 fprintf(stderr, "parse_buffer failed; leaving tmp file %s "
 660                         "behind.\n", filename);
 661         } else {
 662                 rc = unlink(filename);
 663                 if (rc)
 664                         fprintf(stderr, "dumped successfully, but couldn't "
 665                                 "unlink tmp file %s: %s\n", filename,
 666                                 strerror(errno));
 667         }
 668
 669         return rc;
 670 }
 671
 672 int jt_dbg_debug_file(int argc, char **argv)
 673 {
 674         int    fdin;
 675         int    fdout;
 676         int    rc;
 677
 678         if (argc > 3 || argc < 2) {
 679                 fprintf(stderr, "usage: %s <input> [output]\n", argv[0]);
 680                 return 0;
 681         }
 682
 683         fdin = open(argv[1], O_RDONLY | O_LARGEFILE);
 684         if (fdin < 0) {
 685                 fprintf(stderr, "open(%s) failed: %s\n", argv[1],
 686                         strerror(errno));
 687                 return 1;
 688         }
 689         if (argc > 2) {
 690                 fdout = open(argv[2],
 691                              O_CREAT | O_TRUNC | O_WRONLY | O_LARGEFILE,
 692                              0600);
 693                 if (fdout < 0) {
 694                         fprintf(stderr, "open(%s) failed: %s\n", argv[2],
 695                                 strerror(errno));
 696                         close(fdin);
 697                         return 1;
 698                 }
 699         } else {
 700                 fdout = fileno(stdout);
 701         }
 702
 703         rc = parse_buffer(fdin, fdout);
 704
 705         close(fdin);
 706         if (fdout != fileno(stdout))
 707                 close(fdout);
 708
 709         return rc;
 710 }
 711
 712 const char debug_daemon_usage[] = "usage: %s {start file [MB]|stop}\n";
 713
 714 int jt_dbg_debug_daemon(int argc, char **argv)
 715 {
 716         int  rc;
 717         int  fd;
 718
 719         if (argc <= 1) {
 720                 fprintf(stderr, debug_daemon_usage, argv[0]);
 721                 return 1;
 722         }
 723
 724         fd = dbg_open_ctlhandle(DAEMON_CTL_NAME);
 725         if (fd < 0)
 726                 return -1;
 727
 728         rc = -1;
 729         if (strcasecmp(argv[1], "start") == 0) {
 730              if (argc < 3 || argc > 4 ||
 731                     (argc == 4 && strlen(argv[3]) > 5)) {
 732                         fprintf(stderr, debug_daemon_usage, argv[0]);
 733                         goto out;
 734                 }
 735                 if (argc == 4) {
 736                         char       buf[12];
 737                         const long min_size = 10;
 738                         const long max_size = 20480;
 739                         long       size;
 740                         char      *end;
 741
 742                         size = strtoul(argv[3], &end, 0);
 743                         if (size < min_size ||
 744                             size > max_size ||
 745                             *end != 0) {
 746                                 fprintf(stderr, "size %s invalid, must be in "
 747                                         "the range %ld-%ld MB\n", argv[3],
 748                                         min_size, max_size);
 749                                 goto out;
 750                         }
 751                         snprintf(buf, sizeof(buf), "size=%ld", size);
 752                         rc = dbg_write_cmd(fd, buf, strlen(buf));
 753
 754                         if (rc != 0) {
 755                                 fprintf(stderr, "set %s failed: %s\n",
 756                                         buf, strerror(errno));
 757                                 goto out;
 758                         }
 759                 }
 760
 761                 rc = dbg_write_cmd(fd, argv[2], strlen(argv[2]));
 762                 if (rc != 0) {
 763                         fprintf(stderr, "start debug_daemon on %s failed: %s\n",
 764                                 argv[2], strerror(errno));
 765                         goto out;
 766                 }
 767                 rc = 0;
 768                 goto out;
 769         }
 770         if (strcasecmp(argv[1], "stop") == 0) {
 771                 rc = dbg_write_cmd(fd, "stop", 4);
 772                 if (rc != 0) {
 773                         fprintf(stderr, "stopping debug_daemon failed: %s\n",
 774                                 strerror(errno));
 775                         goto out;
 776                 }
 777
 778                 rc = 0;
 779                 goto out;
 780         }
 781
 782         fprintf(stderr, debug_daemon_usage, argv[0]);
 783         rc = -1;
 784 out:
 785         dbg_close_ctlhandle(fd);
 786         return rc;
 787 }
 788
 789 int jt_dbg_clear_debug_buf(int argc, char **argv)
 790 {
 791         int rc;
 792         struct libcfs_ioctl_data data;
 793
 794         if (argc != 1) {
 795                 fprintf(stderr, "usage: %s\n", argv[0]);
 796                 return 0;
 797         }
 798
 799         memset(&data, 0, sizeof(data));
 800         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 801                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 802                 return -1;
 803         }
 804
 805         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_CLEAR_DEBUG, buf);
 806         if (rc) {
 807                 fprintf(stderr, "IOC_LIBCFS_CLEAR_DEBUG failed: %s\n",
 808                         strerror(errno));
 809                 return -1;
 810         }
 811         return 0;
 812 }
 813
 814 int jt_dbg_mark_debug_buf(int argc, char **argv)
 815 {
 816         static char scratch[MAX_MARK_SIZE] = { '\0' };
 817         int rc, max_size = MAX_MARK_SIZE-1;
 818         struct libcfs_ioctl_data data = { 0 };
 819         char *text;
 820         time_t now = time(NULL);
 821
 822         if (argc > 1) {
 823                 int count;
 824                 text = scratch;
 825                 strncpy(text, argv[1], max_size);
 826                 max_size-=strlen(argv[1]);
 827                 for (count = 2; (count < argc) && (max_size > 0); count++){
 828                         strncat(text, " ", max_size);
 829                         max_size -= 1;
 830                         strncat(text, argv[count], max_size);
 831                         max_size -= strlen(argv[count]);
 832                 }
 833         } else {
 834                 text = ctime(&now);
 835         }
 836
 837         data.ioc_inllen1 = strlen(text) + 1;
 838         data.ioc_inlbuf1 = text;
 839         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 840                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 841                 return -1;
 842         }
 843
 844         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_MARK_DEBUG, buf);
 845         if (rc) {
 846                 fprintf(stderr, "IOC_LIBCFS_MARK_DEBUG failed: %s\n",
 847                         strerror(errno));
 848                 return -1;
 849         }
 850         return 0;
 851 }
 852
 853 static struct mod_paths {
 854         char *name, *path;
 855 } mod_paths[] = {
 856         {"libcfs", "libcfs/libcfs"},
 857         {"lnet", "lnet/lnet"},
 858         {"kmxlnd", "lnet/klnds/mxlnd"},
 859         {"ko2iblnd", "lnet/klnds/o2iblnd"},
 860         {"kptllnd", "lnet/klnds/ptllnd"},
 861         {"kqswlnd", "lnet/klnds/qswlnd"},
 862         {"kralnd", "lnet/klnds/ralnd"},
 863         {"ksocklnd", "lnet/klnds/socklnd"},
 864         {"ktdilnd", "lnet/klnds/tdilnd"},
 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         const char *proc = "/proc/modules";
 915         char modname[128], buf[4096];
 916         long modaddr;
 917         FILE *file;
 918
 919         if (argc >= 2)
 920                 path = argv[1];
 921         if (argc > 3) {
 922                 printf("%s [path] [kernel]\n", argv[0]);
 923                 return 0;
 924         }
 925
 926         file = fopen(proc, "r");
 927         if (!file) {
 928                 printf("failed open %s: %s\n", proc, strerror(errno));
 929                 return 0;
 930         }
 931
 932         while (fgets(buf, sizeof(buf), file) != NULL) {
 933                 if (sscanf(buf, "%s %*s %*s %*s %*s %lx", modname, &modaddr) == 2) {
 934                         for (mp = mod_paths; mp->name != NULL; mp++) {
 935                                 if (!strcmp(mp->name, modname))
 936                                         break;
 937                         }
 938                         if (mp->name) {
 939                                 printf("add-symbol-file %s%s%s/%s.o 0x%0lx\n",
 940                                        path, path[0] ? "/" : "",
 941                                        mp->path, mp->name, modaddr);
 942                         }
 943                 }
 944         }
 945
 946         fclose(file);
 947         return 0;
 948 }
 949
 950 int jt_dbg_modules(int argc, char **argv)
 951 {
 952         int rc = 0;
 953         struct utsname sysinfo;
 954
 955         rc = uname(&sysinfo);
 956         if (rc) {
 957                 printf("uname() failed: %s\n", strerror(errno));
 958                 return 0;
 959         }
 960
 961         if (sysinfo.release[2] > '4') {
 962                 return jt_dbg_modules_2_5(argc, argv);
 963         } else {
 964                 return jt_dbg_modules_2_4(argc, argv);
 965         }
 966
 967         return 0;
 968 }
 969
 970 int jt_dbg_panic(int argc, char **argv)
 971 {
 972         int rc;
 973         struct libcfs_ioctl_data data;
 974
 975         if (argc != 1) {
 976                 fprintf(stderr, "usage: %s\n", argv[0]);
 977                 return 0;
 978         }
 979
 980         memset(&data, 0, sizeof(data));
 981         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 982                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 983                 return -1;
 984         }
 985
 986         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_PANIC, buf);
 987         if (rc) {
 988                 fprintf(stderr, "IOC_LIBCFS_PANIC failed: %s\n",
 989                         strerror(errno));
 990                 return -1;
 991         }
 992         return 0;
 993 }