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 [sun.com URL with a
  20  * copy of GPLv2].
  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 <stdio.h>
  47 #ifdef HAVE_NETDB_H
  48 #include <netdb.h>
  49 #endif
  50 #include <stdlib.h>
  51 #include <string.h>
  52 #ifdef HAVE_SYS_IOCTL_H
  53 #include <sys/ioctl.h>
  54 #endif
  55 #ifndef _IOWR
  56 #include "ioctl.h"
  57 #endif
  58 #include <fcntl.h>
  59 #include <errno.h>
  60 #include <unistd.h>
  61 #include <assert.h>
  62
  63 #include <sys/types.h>
  64 #include <sys/socket.h>
  65 #include <sys/stat.h>
  66 #include <sys/mman.h>
  67 #include <sys/utsname.h>
  68
  69 #include <lnet/api-support.h>
  70 #include <lnet/lnetctl.h>
  71 #include <libcfs/portals_utils.h>
  72 #include "parser.h"
  73
  74 #include <time.h>
  75
  76 static char rawbuf[8192];
  77 static char *buf = rawbuf;
  78 static int max = 8192;
  79 /*static int g_pfd = -1;*/
  80 static int subsystem_mask = ~0;
  81 static int debug_mask = ~0;
  82
  83 #define MAX_MARK_SIZE 256
  84
  85 static const char *libcfs_debug_subsystems[] =
  86         {"undefined", "mdc", "mds", "osc",
  87          "ost", "class", "log", "llite",
  88          "rpc", "mgmt", "lnet", "lnd",
  89          "pinger", "filter", "", "echo",
  90          "ldlm", "lov", "", "",
  91          "", "", "", "lmv",
  92          "", "sec", "gss", "",
  93          "mgc", "mgs", "fid", "fld", NULL};
  94 static const char *libcfs_debug_masks[] =
  95         {"trace", "inode", "super", "ext2",
  96          "malloc", "cache", "info", "ioctl",
  97          "neterror", "net", "warning", "buffs",
  98          "other", "dentry", "nettrace", "page",
  99          "dlmtrace", "error", "emerg", "ha",
 100          "rpctrace", "vfstrace", "reada", "mmap",
 101          "config", "console", "quota", "sec", NULL};
 102
 103 struct debug_daemon_cmd {
 104         char *cmd;
 105         unsigned int cmdv;
 106 };
 107
 108 static const struct debug_daemon_cmd libcfs_debug_daemon_cmd[] = {
 109         {"start", DEBUG_DAEMON_START},
 110         {"stop", DEBUG_DAEMON_STOP},
 111         {0, 0}
 112 };
 113
 114 #ifdef __linux__
 115
 116 #define DAEMON_CTL_NAME         "/proc/sys/lnet/daemon_file"
 117 #define SUBSYS_DEBUG_CTL_NAME   "/proc/sys/lnet/subsystem_debug"
 118 #define DEBUG_CTL_NAME          "/proc/sys/lnet/debug"
 119 #define DUMP_KERNEL_CTL_NAME    "/proc/sys/lnet/dump_kernel"
 120
 121 static int
 122 dbg_open_ctlhandle(const char *str)
 123 {
 124         int fd;
 125         fd = open(str, O_WRONLY);
 126         if (fd < 0) {
 127                 fprintf(stderr, "open %s failed: %s\n", str,
 128                         strerror(errno));
 129                 return -1;
 130         }
 131         return fd;
 132 }
 133
 134 static void
 135 dbg_close_ctlhandle(int fd)
 136 {
 137         close(fd);
 138 }
 139
 140 static int
 141 dbg_write_cmd(int fd, char *str, int len)
 142 {
 143         int    rc  = write(fd, str, len);
 144
 145         return (rc == len ? 0 : 1);
 146 }
 147
 148 #elif defined(__DARWIN__)
 149
 150 #define DAEMON_CTL_NAME         "lnet.trace_daemon"
 151 #define SUBSYS_DEBUG_CTL_NAME   "lnet.subsystem_debug"
 152 #define DEBUG_CTL_NAME          "lnet.debug"
 153 #define DUMP_KERNEL_CTL_NAME    "lnet.trace_dumpkernel"
 154
 155 static char     sysctl_name[128];
 156 static int
 157 dbg_open_ctlhandle(const char *str)
 158 {
 159
 160         if (strlen(str)+1 > 128) {
 161                 fprintf(stderr, "sysctl name is too long: %s.\n", str);
 162                 return -1;
 163         }
 164         strcpy(sysctl_name, str);
 165
 166         return 0;
 167 }
 168
 169 static void
 170 dbg_close_ctlhandle(int fd)
 171 {
 172         sysctl_name[0] = '\0';
 173         return;
 174 }
 175
 176 static int
 177 dbg_write_cmd(int fd, char *str, int len)
 178 {
 179         int     rc;
 180
 181         rc = sysctlbyname(sysctl_name, NULL, NULL, str, len+1);
 182         if (rc != 0) {
 183                 fprintf(stderr, "sysctl %s with cmd (%s) error: %d\n",
 184                         sysctl_name, str, errno);
 185         }
 186         return (rc == 0 ? 0: 1);
 187 }
 188
 189 #else
 190 #error - Unknown sysctl convention.
 191 #endif
 192
 193 static int do_debug_mask(char *name, int enable)
 194 {
 195         int found = 0, i;
 196
 197         for (i = 0; libcfs_debug_subsystems[i] != NULL; i++) {
 198                 if (strcasecmp(name, libcfs_debug_subsystems[i]) == 0 ||
 199                     strcasecmp(name, "all_subs") == 0) {
 200                         printf("%s output from subsystem \"%s\"\n",
 201                                 enable ? "Enabling" : "Disabling",
 202                                 libcfs_debug_subsystems[i]);
 203                         if (enable)
 204                                 subsystem_mask |= (1 << i);
 205                         else
 206                                 subsystem_mask &= ~(1 << i);
 207                         found = 1;
 208                 }
 209         }
 210         for (i = 0; libcfs_debug_masks[i] != NULL; i++) {
 211                 if (strcasecmp(name, libcfs_debug_masks[i]) == 0 ||
 212                     strcasecmp(name, "all_types") == 0) {
 213                         printf("%s output of type \"%s\"\n",
 214                                 enable ? "Enabling" : "Disabling",
 215                                 libcfs_debug_masks[i]);
 216                         if (enable)
 217                                 debug_mask |= (1 << i);
 218                         else
 219                                 debug_mask &= ~(1 << i);
 220                         found = 1;
 221                 }
 222         }
 223
 224         return found;
 225 }
 226
 227 int dbg_initialize(int argc, char **argv)
 228 {
 229         return 0;
 230 }
 231
 232 int jt_dbg_filter(int argc, char **argv)
 233 {
 234         int   i;
 235
 236         if (argc < 2) {
 237                 fprintf(stderr, "usage: %s <subsystem ID or debug mask>\n",
 238                         argv[0]);
 239                 return 0;
 240         }
 241
 242         for (i = 1; i < argc; i++)
 243                 if (!do_debug_mask(argv[i], 0))
 244                         fprintf(stderr, "Unknown subsystem or debug type: %s\n",
 245                                 argv[i]);
 246         return 0;
 247 }
 248
 249 int jt_dbg_show(int argc, char **argv)
 250 {
 251         int    i;
 252
 253         if (argc < 2) {
 254                 fprintf(stderr, "usage: %s <subsystem ID or debug mask>\n",
 255                         argv[0]);
 256                 return 0;
 257         }
 258
 259         for (i = 1; i < argc; i++)
 260                 if (!do_debug_mask(argv[i], 1))
 261                         fprintf(stderr, "Unknown subsystem or debug type: %s\n",
 262                                 argv[i]);
 263
 264         return 0;
 265 }
 266
 267 static int applymask(char* procpath, int value)
 268 {
 269         int rc;
 270         char buf[64];
 271         int len = snprintf(buf, 64, "%d", value);
 272
 273         int fd = dbg_open_ctlhandle(procpath);
 274         if (fd == -1) {
 275                 fprintf(stderr, "Unable to open %s: %s\n",
 276                         procpath, strerror(errno));
 277                 return fd;
 278         }
 279         rc = dbg_write_cmd(fd, buf, len+1);
 280         if (rc != 0) {
 281                 fprintf(stderr, "Write to %s failed: %s\n",
 282                         procpath, strerror(errno));
 283                 return rc;
 284         }
 285         dbg_close_ctlhandle(fd);
 286         return 0;
 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 **linev, int used, FILE *out)
 359 {
 360         int i;
 361
 362         for (i = 0; i < used; i++) {
 363                 struct dbg_line *line = linev[i];
 364                 struct ptldebug_header *hdr = line->hdr;
 365
 366                 fprintf(out, "%08x:%08x:%u:%u.%06llu:%u:%u:%u:(%s:%u:%s()) %s",
 367                         hdr->ph_subsys, hdr->ph_mask, hdr->ph_cpu_id,
 368                         hdr->ph_sec, (unsigned long long)hdr->ph_usec,
 369                         hdr->ph_stack, hdr->ph_pid, hdr->ph_extern_pid,
 370                         line->file, hdr->ph_line_num, line->fn, line->text);
 371                 free(line->hdr);
 372                 free(line);
 373         }
 374         free(linev);
 375 }
 376
 377 static int add_rec(struct dbg_line *line, struct dbg_line ***linevp, int *lenp,
 378                    int used)
 379 {
 380         struct dbg_line **linev = *linevp;
 381
 382         if (used == *lenp) {
 383                 int nlen = *lenp + 512;
 384                 int nsize = nlen * sizeof(struct dbg_line *);
 385
 386                 linev = *linevp ? realloc(*linevp, nsize) : malloc(nsize);
 387                 if (!linev)
 388                         return 0;
 389                 *linevp = linev;
 390                 *lenp = nlen;
 391         }
 392         linev[used] = line;
 393         return 1;
 394 }
 395
 396 static int parse_buffer(FILE *in, FILE *out)
 397 {
 398         struct dbg_line *line;
 399         struct ptldebug_header *hdr;
 400         char buf[4097], *p;
 401         int rc;
 402         unsigned long dropped = 0, kept = 0;
 403         struct dbg_line **linev = NULL;
 404         int linev_len = 0;
 405
 406         while (1) {
 407                 rc = fread(buf, sizeof(hdr->ph_len) + sizeof(hdr->ph_flags), 1, in);
 408                 if (rc <= 0)
 409                         break;
 410
 411                 hdr = (void *)buf;
 412                 if (hdr->ph_len == 0)
 413                         break;
 414                 if (hdr->ph_len > 4094) {
 415                         fprintf(stderr, "unexpected large record: %d bytes.  "
 416                                 "aborting.\n",
 417                                 hdr->ph_len);
 418                         break;
 419                 }
 420
 421                 rc = fread(buf + sizeof(hdr->ph_len) + sizeof(hdr->ph_flags), 1,
 422                            hdr->ph_len - sizeof(hdr->ph_len) - sizeof(hdr->ph_flags), in);
 423                 if (rc <= 0)
 424                         break;
 425
 426                 if ((hdr->ph_subsys && !(subsystem_mask & hdr->ph_subsys)) ||
 427                     (hdr->ph_mask   && !(debug_mask & hdr->ph_mask))) {
 428                         dropped++;
 429                         continue;
 430                 }
 431
 432                 line = malloc(sizeof(*line));
 433                 if (line == NULL) {
 434                         fprintf(stderr, "malloc failed; printing accumulated "
 435                                 "records and exiting.\n");
 436                         break;
 437                 }
 438
 439                 line->hdr = malloc(hdr->ph_len + 1);
 440                 if (line->hdr == NULL) {
 441                         free(line);
 442                         fprintf(stderr, "malloc failed; printing accumulated "
 443                                 "records and exiting.\n");
 444                         break;
 445                 }
 446
 447                 p = (void *)line->hdr;
 448                 memcpy(line->hdr, buf, hdr->ph_len);
 449                 p[hdr->ph_len] = '\0';
 450
 451                 p += sizeof(*hdr);
 452                 line->file = p;
 453                 p += strlen(line->file) + 1;
 454                 line->fn = p;
 455                 p += strlen(line->fn) + 1;
 456                 line->text = p;
 457
 458                 if (!add_rec(line, &linev, &linev_len, kept)) {
 459                         fprintf(stderr, "malloc failed; printing accumulated "
 460                                 "records and exiting.\n");
 461                         break;
 462                 }
 463                 kept++;
 464         }
 465
 466         if (linev) {
 467                 qsort(linev, kept, sizeof(struct dbg_line *), cmp_rec);
 468                 print_rec(linev, kept, out);
 469         }
 470
 471         printf("Debug log: %lu lines, %lu kept, %lu dropped.\n",
 472                 dropped + kept, kept, dropped);
 473         return 0;
 474 }
 475
 476 int jt_dbg_debug_kernel(int argc, char **argv)
 477 {
 478         char filename[4096];
 479         struct stat st;
 480         int rc, raw = 0, fd;
 481         FILE *in, *out = stdout;
 482
 483         if (argc > 3) {
 484                 fprintf(stderr, "usage: %s [file] [raw]\n", argv[0]);
 485                 return 0;
 486         }
 487
 488         if (argc > 2) {
 489                 raw = atoi(argv[2]);
 490         } else if (argc > 1 && (argv[1][0] == '0' || argv[1][0] == '1')) {
 491                 raw = atoi(argv[1]);
 492                 argc--;
 493         }
 494
 495         /* If we are dumping raw (which means no conversion step to ASCII)
 496          * then dump directly to any supplied filename, otherwise this is
 497          * just a temp file and we dump to the real file at convert time. */
 498         if (argc > 1 && raw)
 499                 strcpy(filename, argv[1]);
 500         else
 501                 sprintf(filename, "/tmp/lustre-log."CFS_TIME_T".%u",
 502                         time(NULL),getpid());
 503
 504         if (stat(filename, &st) == 0 && S_ISREG(st.st_mode))
 505                 unlink(filename);
 506
 507         fd = dbg_open_ctlhandle(DUMP_KERNEL_CTL_NAME);
 508         if (fd < 0) {
 509                 fprintf(stderr, "open(dump_kernel) failed: %s\n",
 510                         strerror(errno));
 511                 return 1;
 512         }
 513
 514         rc = dbg_write_cmd(fd, filename, strlen(filename));
 515         if (rc != 0) {
 516                 fprintf(stderr, "write(%s) failed: %s\n", filename,
 517                         strerror(errno));
 518                 close(fd);
 519                 return 1;
 520         }
 521         dbg_close_ctlhandle(fd);
 522
 523         if (raw)
 524                 return 0;
 525
 526         in = fopen(filename, "r");
 527         if (in == NULL) {
 528                 if (errno == ENOENT) /* no dump file created */
 529                         return 0;
 530
 531                 fprintf(stderr, "fopen(%s) failed: %s\n", filename,
 532                         strerror(errno));
 533                 return 1;
 534         }
 535         if (argc > 1) {
 536                 out = fopen(argv[1], "w");
 537                 if (out == NULL) {
 538                         fprintf(stderr, "fopen(%s) failed: %s\n", argv[1],
 539                                 strerror(errno));
 540                         fclose(in);
 541                         return 1;
 542                 }
 543         }
 544
 545         rc = parse_buffer(in, out);
 546         fclose(in);
 547         if (argc > 1)
 548                 fclose(out);
 549         if (rc) {
 550                 fprintf(stderr, "parse_buffer failed; leaving tmp file %s "
 551                         "behind.\n", filename);
 552         } else {
 553                 rc = unlink(filename);
 554                 if (rc)
 555                         fprintf(stderr, "dumped successfully, but couldn't "
 556                                 "unlink tmp file %s: %s\n", filename,
 557                                 strerror(errno));
 558         }
 559         return rc;
 560 }
 561
 562 int jt_dbg_debug_file(int argc, char **argv)
 563 {
 564         int    fdin;
 565         int    fdout;
 566         FILE  *in;
 567         FILE  *out = stdout;
 568         int    rc;
 569
 570         if (argc > 3 || argc < 2) {
 571                 fprintf(stderr, "usage: %s <input> [output]\n", argv[0]);
 572                 return 0;
 573         }
 574
 575         fdin = open(argv[1], O_RDONLY | O_LARGEFILE);
 576         if (fdin == -1) {
 577                 fprintf(stderr, "open(%s) failed: %s\n", argv[1],
 578                         strerror(errno));
 579                 return 1;
 580         }
 581         in = fdopen(fdin, "r");
 582         if (in == NULL) {
 583                 fprintf(stderr, "fopen(%s) failed: %s\n", argv[1],
 584                         strerror(errno));
 585                 close(fdin);
 586                 return 1;
 587         }
 588         if (argc > 2) {
 589                 fdout = open(argv[2],
 590                              O_CREAT | O_TRUNC | O_WRONLY | O_LARGEFILE,
 591                              0600);
 592                 if (fdout == -1) {
 593                         fprintf(stderr, "open(%s) failed: %s\n", argv[2],
 594                                 strerror(errno));
 595                         fclose(in);
 596                         return 1;
 597                 }
 598                 out = fdopen(fdout, "w");
 599                 if (out == NULL) {
 600                         fprintf(stderr, "fopen(%s) failed: %s\n", argv[2],
 601                                 strerror(errno));
 602                         fclose(in);
 603                         close(fdout);
 604                         return 1;
 605                 }
 606         }
 607
 608         rc = parse_buffer(in, out);
 609
 610         fclose(in);
 611         if (out != stdout)
 612                 fclose(out);
 613
 614         return rc;
 615 }
 616
 617 const char debug_daemon_usage[] = "usage: %s {start file [MB]|stop}\n";
 618
 619 int jt_dbg_debug_daemon(int argc, char **argv)
 620 {
 621         int  rc;
 622         int  fd;
 623
 624         if (argc <= 1) {
 625                 fprintf(stderr, debug_daemon_usage, argv[0]);
 626                 return 1;
 627         }
 628
 629         fd = dbg_open_ctlhandle(DAEMON_CTL_NAME);
 630         if (fd < 0)
 631                 return -1;
 632
 633         rc = -1;
 634         if (strcasecmp(argv[1], "start") == 0) {
 635              if (argc < 3 || argc > 4 ||
 636                     (argc == 4 && strlen(argv[3]) > 5)) {
 637                         fprintf(stderr, debug_daemon_usage, argv[0]);
 638                         goto out;
 639                 }
 640                 if (argc == 4) {
 641                         char       buf[12];
 642                         const long min_size = 10;
 643                         const long max_size = 20480;
 644                         long       size;
 645                         char      *end;
 646
 647                         size = strtoul(argv[3], &end, 0);
 648                         if (size < min_size ||
 649                             size > max_size ||
 650                             *end != 0) {
 651                                 fprintf(stderr, "size %s invalid, must be in "
 652                                         "the range %ld-%ld MB\n", argv[3],
 653                                         min_size, max_size);
 654                                 goto out;
 655                         }
 656                         snprintf(buf, sizeof(buf), "size=%ld", size);
 657                         rc = dbg_write_cmd(fd, buf, strlen(buf));
 658
 659                         if (rc != 0) {
 660                                 fprintf(stderr, "set %s failed: %s\n",
 661                                         buf, strerror(errno));
 662                                 goto out;
 663                         }
 664                 }
 665
 666                 rc = dbg_write_cmd(fd, argv[2], strlen(argv[2]));
 667                 if (rc != 0) {
 668                         fprintf(stderr, "start debug_daemon on %s failed: %s\n",
 669                                 argv[2], strerror(errno));
 670                         goto out;
 671                 }
 672                 rc = 0;
 673                 goto out;
 674         }
 675         if (strcasecmp(argv[1], "stop") == 0) {
 676                 rc = dbg_write_cmd(fd, "stop", 4);
 677                 if (rc != 0) {
 678                         fprintf(stderr, "stopping debug_daemon failed: %s\n",
 679                                 strerror(errno));
 680                         goto out;
 681                 }
 682
 683                 rc = 0;
 684                 goto out;
 685         }
 686
 687         fprintf(stderr, debug_daemon_usage, argv[0]);
 688         rc = -1;
 689 out:
 690         dbg_close_ctlhandle(fd);
 691         return rc;
 692 }
 693
 694 int jt_dbg_clear_debug_buf(int argc, char **argv)
 695 {
 696         int rc;
 697         struct libcfs_ioctl_data data;
 698
 699         if (argc != 1) {
 700                 fprintf(stderr, "usage: %s\n", argv[0]);
 701                 return 0;
 702         }
 703
 704         memset(&data, 0, sizeof(data));
 705         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 706                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 707                 return -1;
 708         }
 709
 710         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_CLEAR_DEBUG, buf);
 711         if (rc) {
 712                 fprintf(stderr, "IOC_LIBCFS_CLEAR_DEBUG failed: %s\n",
 713                         strerror(errno));
 714                 return -1;
 715         }
 716         return 0;
 717 }
 718
 719 int jt_dbg_mark_debug_buf(int argc, char **argv)
 720 {
 721         static char scratch[MAX_MARK_SIZE] = { '\0' };
 722         int rc, max_size = MAX_MARK_SIZE-1;
 723         struct libcfs_ioctl_data data = { 0 };
 724         char *text;
 725         time_t now = time(NULL);
 726
 727         if (argc > 1) {
 728                 int count;
 729                 text = scratch;
 730                 strncpy(text, argv[1], max_size);
 731                 max_size-=strlen(argv[1]);
 732                 for (count = 2; (count < argc) && (max_size > 0); count++){
 733                         strncat(text, " ", max_size);
 734                         max_size -= 1;
 735                         strncat(text, argv[count], max_size);
 736                         max_size -= strlen(argv[count]);
 737                 }
 738         } else {
 739                 text = ctime(&now);
 740         }
 741
 742         data.ioc_inllen1 = strlen(text) + 1;
 743         data.ioc_inlbuf1 = text;
 744         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 745                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 746                 return -1;
 747         }
 748
 749         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_MARK_DEBUG, buf);
 750         if (rc) {
 751                 fprintf(stderr, "IOC_LIBCFS_MARK_DEBUG failed: %s\n",
 752                         strerror(errno));
 753                 return -1;
 754         }
 755         return 0;
 756 }
 757
 758 static struct mod_paths {
 759         char *name, *path;
 760 } mod_paths[] = {
 761         {"libcfs", "libcfs/libcfs"},
 762         {"lnet", "lnet/lnet"},
 763         {"kciblnd", "lnet/klnds/ciblnd"},
 764         {"kgmlnd", "lnet/klnds/gmlnd"},
 765         {"kmxlnd", "lnet/klnds/mxlnd"},
 766         {"kiiblnd", "lnet/klnds/iiblnd"},
 767         {"ko2iblnd", "lnet/klnds/o2iblnd"},
 768         {"kopeniblnd", "lnet/klnds/openiblnd"},
 769         {"kptllnd", "lnet/klnds/ptllnd"},
 770         {"kqswlnd", "lnet/klnds/qswlnd"},
 771         {"kralnd", "lnet/klnds/ralnd"},
 772         {"ksocklnd", "lnet/klnds/socklnd"},
 773         {"ktdilnd", "lnet/klnds/tdilnd"},
 774         {"kviblnd", "lnet/klnds/viblnd"},
 775         {"lvfs", "lustre/lvfs"},
 776         {"obdclass", "lustre/obdclass"},
 777         {"llog_test", "lustre/obdclass"},
 778         {"ptlrpc_gss", "lustre/ptlrpc/gss"},
 779         {"ptlrpc", "lustre/ptlrpc"},
 780         {"gks", "lustre/sec/gks"},
 781         {"gkc", "lustre/sec/gks"},
 782         {"ost", "lustre/ost"},
 783         {"osc", "lustre/osc"},
 784         {"mds", "lustre/mds"},
 785         {"mdc", "lustre/mdc"},
 786         {"llite", "lustre/llite"},
 787         {"lustre", "lustre/llite"},
 788         {"llite_lloop", "lustre/llite"},
 789         {"ldiskfs", "ldiskfs/ldiskfs"},
 790         {"smfs", "lustre/smfs"},
 791         {"obdecho", "lustre/obdecho"},
 792         {"ldlm", "lustre/ldlm"},
 793         {"obdfilter", "lustre/obdfilter"},
 794         {"lov", "lustre/lov"},
 795         {"lmv", "lustre/lmv"},
 796         {"fsfilt_ext3", "lustre/lvfs"},
 797         {"fsfilt_reiserfs", "lustre/lvfs"},
 798         {"fsfilt_smfs", "lustre/lvfs"},
 799         {"fsfilt_ldiskfs", "lustre/lvfs"},
 800         {"mds_ext3", "lustre/mds"},
 801         {"cobd", "lustre/cobd"},
 802         {"cmobd", "lustre/cmobd"},
 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         {NULL, NULL}
 813 };
 814
 815 static int jt_dbg_modules_2_4(int argc, char **argv)
 816 {
 817 #ifdef HAVE_LINUX_VERSION_H
 818 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
 819         struct mod_paths *mp;
 820         char *path = "";
 821         char *kernel = "linux";
 822
 823         if (argc >= 2)
 824                 path = argv[1];
 825         if (argc == 3)
 826                 kernel = argv[2];
 827         if (argc > 3) {
 828                 printf("%s [path] [kernel]\n", argv[0]);
 829                 return 0;
 830         }
 831
 832         for (mp = mod_paths; mp->name != NULL; mp++) {
 833                 struct module_info info;
 834                 int rc;
 835                 size_t crap;
 836                 int query_module(const char *name, int which, void *buf,
 837                                  size_t bufsize, size_t *ret);
 838
 839                 rc = query_module(mp->name, QM_INFO, &info, sizeof(info),
 840                                   &crap);
 841                 if (rc < 0) {
 842                         if (errno != ENOENT)
 843                                 printf("query_module(%s) failed: %s\n",
 844                                        mp->name, strerror(errno));
 845                 } else {
 846                         printf("add-symbol-file %s%s%s/%s.o 0x%0lx\n", path,
 847                                path[0] ? "/" : "", mp->path, mp->name,
 848                                info.addr + sizeof(struct module));
 849                 }
 850         }
 851
 852         return 0;
 853 #endif // Headers are 2.6-only
 854 #endif // !HAVE_LINUX_VERSION_H
 855         return -EINVAL;
 856 }
 857
 858 static int jt_dbg_modules_2_5(int argc, char **argv)
 859 {
 860         struct mod_paths *mp;
 861         char *path = "";
 862         char *kernel = "linux";
 863         const char *proc = "/proc/modules";
 864         char modname[128], others[4096];
 865         long modaddr;
 866         int rc;
 867         FILE *file;
 868
 869         if (argc >= 2)
 870                 path = argv[1];
 871         if (argc == 3)
 872                 kernel = argv[2];
 873         if (argc > 3) {
 874                 printf("%s [path] [kernel]\n", argv[0]);
 875                 return 0;
 876         }
 877
 878         file = fopen(proc, "r");
 879         if (!file) {
 880                 printf("failed open %s: %s\n", proc, strerror(errno));
 881                 return 0;
 882         }
 883
 884         while ((rc = fscanf(file, "%s %s %s %s %s %lx\n",
 885                 modname, others, others, others, others, &modaddr)) == 6) {
 886                 for (mp = mod_paths; mp->name != NULL; mp++) {
 887                         if (!strcmp(mp->name, modname))
 888                                 break;
 889                 }
 890                 if (mp->name) {
 891                         printf("add-symbol-file %s%s%s/%s.o 0x%0lx\n", path,
 892                                path[0] ? "/" : "", mp->path, mp->name, modaddr);
 893                 }
 894         }
 895
 896         fclose(file);
 897         return 0;
 898 }
 899
 900 int jt_dbg_modules(int argc, char **argv)
 901 {
 902         int rc = 0;
 903         struct utsname sysinfo;
 904
 905         rc = uname(&sysinfo);
 906         if (rc) {
 907                 printf("uname() failed: %s\n", strerror(errno));
 908                 return 0;
 909         }
 910
 911         if (sysinfo.release[2] > '4') {
 912                 return jt_dbg_modules_2_5(argc, argv);
 913         } else {
 914                 return jt_dbg_modules_2_4(argc, argv);
 915         }
 916
 917         return 0;
 918 }
 919
 920 int jt_dbg_panic(int argc, char **argv)
 921 {
 922         int rc;
 923         struct libcfs_ioctl_data data;
 924
 925         if (argc != 1) {
 926                 fprintf(stderr, "usage: %s\n", argv[0]);
 927                 return 0;
 928         }
 929
 930         memset(&data, 0, sizeof(data));
 931         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
 932                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
 933                 return -1;
 934         }
 935
 936         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_PANIC, buf);
 937         if (rc) {
 938                 fprintf(stderr, "IOC_LIBCFS_PANIC failed: %s\n",
 939                         strerror(errno));
 940                 return -1;
 941         }
 942         return 0;
 943 }