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[fs/lustre-release.git] / 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                 int bytes;
367
368                 bytes = sprintf(out, "%08x:%08x:%u:%u.%06llu:%u:%u:%u:(%s:%u:%s()) %s",
369                                 hdr->ph_subsys, hdr->ph_mask, hdr->ph_cpu_id,
370                                 hdr->ph_sec, (unsigned long long)hdr->ph_usec,
371                                 hdr->ph_stack, hdr->ph_pid, hdr->ph_extern_pid,
372                                 line->file, hdr->ph_line_num, line->fn, line->text);
373
374                 write(fdout, out, bytes);
375                 free(line->hdr);
376                 free(line);
377         }
378         free(linev);
379         *linevp = NULL;
380 }
381
382 static int add_rec(struct dbg_line *line, struct dbg_line ***linevp, int *lenp,
383                    int used)
384 {
385         struct dbg_line **linev = *linevp;
386
387         if (used == *lenp) {
388                 int nlen = *lenp + 4096;
389                 int nsize = nlen * sizeof(struct dbg_line *);
390
391                 linev = realloc(*linevp, nsize);
392                 if (!linev)
393                         return -ENOMEM;
394
395                 *linevp = linev;
396                 *lenp = nlen;
397         }
398         linev[used] = line;
399
400         return 0;
401 }
402   
403 static void dump_hdr(unsigned long long offset, struct ptldebug_header *hdr)
404 {
405         fprintf(stderr, "badly-formed record at offset = %llu\n", offset);
406         fprintf(stderr, "  len = %u\n", hdr->ph_len);
407         fprintf(stderr, "  flags = %x\n", hdr->ph_flags);
408         fprintf(stderr, "  subsystem = %x\n", hdr->ph_subsys);
409         fprintf(stderr, "  mask = %x\n", hdr->ph_mask);
410         fprintf(stderr, "  cpu_id = %u\n", hdr->ph_cpu_id);
411         fprintf(stderr, "  seconds = %u\n", hdr->ph_sec);
412         fprintf(stderr, "  microseconds = %lu\n", (long)hdr->ph_usec);
413         fprintf(stderr, "  stack = %u\n", hdr->ph_stack);
414         fprintf(stderr, "  pid = %u\n", hdr->ph_pid);
415         fprintf(stderr, "  host pid = %u\n", hdr->ph_extern_pid);
416         fprintf(stderr, "  line number = %u\n", hdr->ph_line_num);
417 }
418  
419 #define HDR_SIZE sizeof(*hdr)
420  
421 static int parse_buffer(int fdin, int fdout)
422 {
423         struct dbg_line *line;
424         struct ptldebug_header *hdr;
425         char buf[4097], *ptr;
426         unsigned long dropped = 0, kept = 0, bad = 0;
427         struct dbg_line **linev = NULL;
428         int linev_len = 0;
429         int rc;
430  
431         hdr = (void *)buf;
432   
433         while (1) {
434                 int first_bad = 1;
435                 int count;
436  
437                 count = HDR_SIZE;
438                 ptr = buf;
439         readhdr:
440                 rc = read(fdin, ptr, count);
441                 if (rc <= 0)
442                          goto print;
443   
444                 ptr += rc;
445                 count -= rc;
446                 if (count > 0)
447                         goto readhdr;
448                 
449                 if (hdr->ph_len > 4094 ||       /* is this header bogus? */
450                     hdr->ph_cpu_id > 65536 ||
451                     hdr->ph_stack > 65536 ||
452                     hdr->ph_sec < (1 << 30) ||
453                     hdr->ph_usec > 1000000000 ||
454                     hdr->ph_line_num > 65536) {
455                         if (first_bad)
456                                 dump_hdr(lseek(fdin, 0, SEEK_CUR), hdr);
457                         bad += first_bad;
458                         first_bad = 0;
459  
460                         /* try to restart on next line */
461                         while (count < HDR_SIZE && buf[count] != '\n')
462                                 count++;
463                         if (buf[count] == '\n')
464                                 count++; /* move past '\n' */
465                         if (HDR_SIZE - count > 0) {
466                                 int left = HDR_SIZE - count;
467
468                                 memmove(buf, buf + count, left);
469                                 ptr = buf + left;
470
471                                 goto readhdr;
472                         }
473
474                         continue;
475                 }
476   
477                 if (hdr->ph_len == 0)
478                         continue;
479
480                 count = hdr->ph_len - HDR_SIZE;
481         readmore:
482                 rc = read(fdin, ptr, count);
483                 if (rc <= 0)
484                         break;
485   
486                 ptr += rc;
487                 count -= rc;
488                 if (count > 0)
489                         goto readmore;
490  
491                 first_bad = 1;
492
493                 if ((hdr->ph_subsys && !(subsystem_mask & hdr->ph_subsys)) ||
494                     (hdr->ph_mask && !(debug_mask & hdr->ph_mask))) {
495                         dropped++;
496                         continue;
497                 }
498   
499         retry_alloc:
500                 line = malloc(sizeof(*line));
501                 if (line == NULL) {
502                          if (linev) {
503                                 fprintf(stderr, "error: line malloc(%u): "
504                                         "printing accumulated records\n",
505                                         (unsigned int)sizeof(*line));
506                                 print_rec(&linev, kept, fdout);
507
508                                 goto retry_alloc;
509                         }
510                         fprintf(stderr, "error: line malloc(%u): exiting\n",
511                                 (unsigned int)sizeof(*line));
512                         break;
513                 }
514
515                 line->hdr = malloc(hdr->ph_len + 1);
516                 if (line->hdr == NULL) {
517                         free(line);
518                         if (linev) {
519                                 fprintf(stderr, "error: hdr malloc(%u): "
520                                         "printing accumulated records\n",
521                                         hdr->ph_len + 1);
522                                 print_rec(&linev, kept, fdout);
523  
524                                 goto retry_alloc;
525                         }
526                         fprintf(stderr, "error: hdr malloc(%u): exiting\n",
527                                         hdr->ph_len + 1);
528                         break;
529                 }
530   
531                 ptr = (void *)line->hdr;
532                 memcpy(line->hdr, buf, hdr->ph_len);
533                 ptr[hdr->ph_len] = '\0';
534
535                 ptr += sizeof(*hdr);
536                 line->file = ptr;
537                 ptr += strlen(line->file) + 1;
538                 line->fn = ptr;
539                 ptr += strlen(line->fn) + 1;
540                 line->text = ptr;
541  
542         retry_add:
543                 if (add_rec(line, &linev, &linev_len, kept) < 0) {
544                         if (linev) {
545                                 fprintf(stderr, "error: add_rec[%u] failed; "
546                                         "print accumulated records\n",
547                                         linev_len);
548                                 print_rec(&linev, kept, fdout);
549
550                                 goto retry_add;
551                         }
552                         fprintf(stderr, "error: add_rec[0] failed; exiting\n");
553                         break;
554                 }
555                 kept++;
556         }
557
558 print:
559         if (linev)
560                 print_rec(&linev, kept, fdout);
561
562         printf("Debug log: %lu lines, %lu kept, %lu dropped, %lu bad.\n",
563                 dropped + kept + bad, kept, dropped, bad);
564   
565         return 0;
566 }
567
568 int jt_dbg_debug_kernel(int argc, char **argv)
569 {
570         char filename[4096];
571         struct stat st;
572         int raw = 0;
573         int save_errno;
574         int fdin;
575         int fdout;
576         int rc;
577
578         if (argc > 3) {
579                 fprintf(stderr, "usage: %s [file] [raw]\n", argv[0]);
580                 return 0;
581         }
582
583         if (argc > 2) {
584                 raw = atoi(argv[2]);
585         } else if (argc > 1 && (argv[1][0] == '0' || argv[1][0] == '1')) {
586                 raw = atoi(argv[1]);
587                 argc--;
588         }
589
590         /* If we are dumping raw (which means no conversion step to ASCII)
591          * then dump directly to any supplied filename, otherwise this is
592          * just a temp file and we dump to the real file at convert time. */
593         if (argc > 1 && raw)
594                 strcpy(filename, argv[1]);
595         else
596                 sprintf(filename, "%s"CFS_TIME_T".%u",
597                         DEBUG_FILE_PATH_DEFAULT, time(NULL), getpid());
598
599         if (stat(filename, &st) == 0 && S_ISREG(st.st_mode))
600                 unlink(filename);
601   
602         fdin = dbg_open_ctlhandle(DUMP_KERNEL_CTL_NAME);
603         if (fdin < 0) {
604                 fprintf(stderr, "open(dump_kernel) failed: %s\n",
605                         strerror(errno));
606                 return 1;
607         }
608
609         rc = dbg_write_cmd(fdin, filename, strlen(filename));
610         save_errno = errno;
611         dbg_close_ctlhandle(fdin);
612         if (rc != 0) {
613                 fprintf(stderr, "write(%s) failed: %s\n", filename,
614                         strerror(save_errno));
615                 return 1;
616         }
617
618         if (raw)
619                 return 0;
620   
621         fdin = open(filename, O_RDONLY);
622         if (fdin < 0) {
623                 if (errno == ENOENT) /* no dump file created */
624                         return 0;
625                 fprintf(stderr, "fopen(%s) failed: %s\n", filename,
626                         strerror(errno));
627                 return 1;
628         }
629         if (argc > 1) {
630                 fdout = open(argv[1], O_WRONLY|O_CREAT|O_TRUNC);
631                 if (fdout < 0) {
632                         fprintf(stderr, "fopen(%s) failed: %s\n", argv[1],
633                                 strerror(errno));
634                         close(fdin);
635                         return 1;
636                 }
637         } else {
638                 fdout = fileno(stdout);
639         }
640
641         rc = parse_buffer(fdin, fdout);
642         close(fdin);
643         if (argc > 1)
644                 close(fdout);
645         if (rc) {
646                 fprintf(stderr, "parse_buffer failed; leaving tmp file %s "
647                         "behind.\n", filename);
648         } else {
649                 rc = unlink(filename);
650                 if (rc)
651                         fprintf(stderr, "dumped successfully, but couldn't "
652                                 "unlink tmp file %s: %s\n", filename,
653                                 strerror(errno));
654         }
655
656         return rc;
657 }
658
659 int jt_dbg_debug_file(int argc, char **argv)
660 {
661         int    fdin;
662         int    fdout;
663         int    rc;
664
665         if (argc > 3 || argc < 2) {
666                 fprintf(stderr, "usage: %s <input> [output]\n", argv[0]);
667                 return 0;
668         }
669
670         fdin = open(argv[1], O_RDONLY | O_LARGEFILE);
671         if (fdin < 0) {
672                 fprintf(stderr, "open(%s) failed: %s\n", argv[1],
673                         strerror(errno));
674                 return 1;
675         }
676         if (argc > 2) {
677                 fdout = open(argv[2],
678                              O_CREAT | O_TRUNC | O_WRONLY | O_LARGEFILE,
679                              0600);
680                 if (fdout < 0) {
681                         fprintf(stderr, "open(%s) failed: %s\n", argv[2],
682                                 strerror(errno));
683                         close(fdin);
684                         return 1;
685                 }
686         } else {
687                 fdout = fileno(stdout);
688         }
689
690         rc = parse_buffer(fdin, fdout);
691
692         close(fdin);
693         if (fdout != fileno(stdout))
694                 close(fdout);
695
696         return rc;
697 }
698
699 const char debug_daemon_usage[] = "usage: %s {start file [MB]|stop}\n";
700
701 int jt_dbg_debug_daemon(int argc, char **argv)
702 {
703         int  rc;
704         int  fd;
705
706         if (argc <= 1) {
707                 fprintf(stderr, debug_daemon_usage, argv[0]);
708                 return 1;
709         }
710
711         fd = dbg_open_ctlhandle(DAEMON_CTL_NAME);
712         if (fd < 0)
713                 return -1;
714
715         rc = -1;
716         if (strcasecmp(argv[1], "start") == 0) {
717              if (argc < 3 || argc > 4 ||
718                     (argc == 4 && strlen(argv[3]) > 5)) {
719                         fprintf(stderr, debug_daemon_usage, argv[0]);
720                         goto out;
721                 }
722                 if (argc == 4) {
723                         char       buf[12];
724                         const long min_size = 10;
725                         const long max_size = 20480;
726                         long       size;
727                         char      *end;
728
729                         size = strtoul(argv[3], &end, 0);
730                         if (size < min_size ||
731                             size > max_size ||
732                             *end != 0) {
733                                 fprintf(stderr, "size %s invalid, must be in "
734                                         "the range %ld-%ld MB\n", argv[3],
735                                         min_size, max_size);
736                                 goto out;
737                         }
738                         snprintf(buf, sizeof(buf), "size=%ld", size);
739                         rc = dbg_write_cmd(fd, buf, strlen(buf));
740
741                         if (rc != 0) {
742                                 fprintf(stderr, "set %s failed: %s\n",
743                                         buf, strerror(errno));
744                                 goto out;
745                         }
746                 }
747
748                 rc = dbg_write_cmd(fd, argv[2], strlen(argv[2]));
749                 if (rc != 0) {
750                         fprintf(stderr, "start debug_daemon on %s failed: %s\n",
751                                 argv[2], strerror(errno));
752                         goto out;
753                 }
754                 rc = 0;
755                 goto out;
756         }
757         if (strcasecmp(argv[1], "stop") == 0) {
758                 rc = dbg_write_cmd(fd, "stop", 4);
759                 if (rc != 0) {
760                         fprintf(stderr, "stopping debug_daemon failed: %s\n",
761                                 strerror(errno));
762                         goto out;
763                 }
764
765                 rc = 0;
766                 goto out;
767         }
768
769         fprintf(stderr, debug_daemon_usage, argv[0]);
770         rc = -1;
771 out:
772         dbg_close_ctlhandle(fd);
773         return rc;
774 }
775
776 int jt_dbg_clear_debug_buf(int argc, char **argv)
777 {
778         int rc;
779         struct libcfs_ioctl_data data;
780
781         if (argc != 1) {
782                 fprintf(stderr, "usage: %s\n", argv[0]);
783                 return 0;
784         }
785
786         memset(&data, 0, sizeof(data));
787         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
788                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
789                 return -1;
790         }
791
792         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_CLEAR_DEBUG, buf);
793         if (rc) {
794                 fprintf(stderr, "IOC_LIBCFS_CLEAR_DEBUG failed: %s\n",
795                         strerror(errno));
796                 return -1;
797         }
798         return 0;
799 }
800
801 int jt_dbg_mark_debug_buf(int argc, char **argv)
802 {
803         static char scratch[MAX_MARK_SIZE] = { '\0' };
804         int rc, max_size = MAX_MARK_SIZE-1;
805         struct libcfs_ioctl_data data = { 0 };
806         char *text;
807         time_t now = time(NULL);
808
809         if (argc > 1) {
810                 int count;
811                 text = scratch;
812                 strncpy(text, argv[1], max_size);
813                 max_size-=strlen(argv[1]);
814                 for (count = 2; (count < argc) && (max_size > 0); count++){
815                         strncat(text, " ", max_size);
816                         max_size -= 1;
817                         strncat(text, argv[count], max_size);
818                         max_size -= strlen(argv[count]);
819                 }
820         } else {
821                 text = ctime(&now);
822         }
823
824         data.ioc_inllen1 = strlen(text) + 1;
825         data.ioc_inlbuf1 = text;
826         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
827                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
828                 return -1;
829         }
830
831         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_MARK_DEBUG, buf);
832         if (rc) {
833                 fprintf(stderr, "IOC_LIBCFS_MARK_DEBUG failed: %s\n",
834                         strerror(errno));
835                 return -1;
836         }
837         return 0;
838 }
839
840 static struct mod_paths {
841         char *name, *path;
842 } mod_paths[] = {
843         {"libcfs", "libcfs/libcfs"},
844         {"lnet", "lnet/lnet"},
845         {"kciblnd", "lnet/klnds/ciblnd"},
846         {"kgmlnd", "lnet/klnds/gmlnd"},
847         {"kmxlnd", "lnet/klnds/mxlnd"},
848         {"kiiblnd", "lnet/klnds/iiblnd"},
849         {"ko2iblnd", "lnet/klnds/o2iblnd"},
850         {"kopeniblnd", "lnet/klnds/openiblnd"},
851         {"kptllnd", "lnet/klnds/ptllnd"},
852         {"kqswlnd", "lnet/klnds/qswlnd"},
853         {"kralnd", "lnet/klnds/ralnd"},
854         {"ksocklnd", "lnet/klnds/socklnd"},
855         {"ktdilnd", "lnet/klnds/tdilnd"},
856         {"kviblnd", "lnet/klnds/viblnd"},
857         {"lvfs", "lustre/lvfs"},
858         {"obdclass", "lustre/obdclass"},
859         {"llog_test", "lustre/obdclass"},
860         {"ptlrpc_gss", "lustre/ptlrpc/gss"},
861         {"ptlrpc", "lustre/ptlrpc"},
862         {"gks", "lustre/sec/gks"},
863         {"gkc", "lustre/sec/gks"},
864         {"ost", "lustre/ost"},
865         {"osc", "lustre/osc"},
866         {"mds", "lustre/mds"},
867         {"mdc", "lustre/mdc"},
868         {"llite", "lustre/llite"},
869         {"lustre", "lustre/llite"},
870         {"llite_lloop", "lustre/llite"},
871         {"ldiskfs", "ldiskfs/ldiskfs"},
872         {"smfs", "lustre/smfs"},
873         {"obdecho", "lustre/obdecho"},
874         {"ldlm", "lustre/ldlm"},
875         {"obdfilter", "lustre/obdfilter"},
876         {"lov", "lustre/lov"},
877         {"lmv", "lustre/lmv"},
878         {"fsfilt_ext3", "lustre/lvfs"},
879         {"fsfilt_reiserfs", "lustre/lvfs"},
880         {"fsfilt_smfs", "lustre/lvfs"},
881         {"fsfilt_ldiskfs", "lustre/lvfs"},
882         {"mds_ext3", "lustre/mds"},
883         {"cobd", "lustre/cobd"},
884         {"cmobd", "lustre/cmobd"},
885         {"lquota", "lustre/quota"},
886         {"mgs", "lustre/mgs"},
887         {"mgc", "lustre/mgc"},
888         {"mdt", "lustre/mdt"},
889         {"mdd", "lustre/mdd"},
890         {"osd", "lustre/osd"},
891         {"cmm", "lustre/cmm"},
892         {"fid", "lustre/fid"},
893         {"fld", "lustre/fld"},
894         {NULL, NULL}
895 };
896
897 static int jt_dbg_modules_2_4(int argc, char **argv)
898 {
899         return -EINVAL;
900 }
901
902 static int jt_dbg_modules_2_5(int argc, char **argv)
903 {
904         struct mod_paths *mp;
905         char *path = "";
906         char *kernel = "linux";
907         const char *proc = "/proc/modules";
908         char modname[128], buf[4096];
909         long modaddr;
910         FILE *file;
911
912         if (argc >= 2)
913                 path = argv[1];
914         if (argc == 3)
915                 kernel = argv[2];
916         if (argc > 3) {
917                 printf("%s [path] [kernel]\n", argv[0]);
918                 return 0;
919         }
920
921         file = fopen(proc, "r");
922         if (!file) {
923                 printf("failed open %s: %s\n", proc, strerror(errno));
924                 return 0;
925         }
926
927         while (fgets(buf, sizeof(buf), file) != NULL) {
928                 if (sscanf(buf, "%s %*s %*s %*s %*s %lx", modname, &modaddr) == 2) {
929                         for (mp = mod_paths; mp->name != NULL; mp++) {
930                                 if (!strcmp(mp->name, modname))
931                                         break;
932                         }
933                         if (mp->name) {
934                                 printf("add-symbol-file %s%s%s/%s.o 0x%0lx\n", 
935                                        path, path[0] ? "/" : "", 
936                                        mp->path, mp->name, modaddr);
937                         }
938                 }
939         }
940
941         fclose(file);
942         return 0;
943 }
944
945 int jt_dbg_modules(int argc, char **argv)
946 {
947         int rc = 0;
948         struct utsname sysinfo;
949
950         rc = uname(&sysinfo);
951         if (rc) {
952                 printf("uname() failed: %s\n", strerror(errno));
953                 return 0;
954         }
955
956         if (sysinfo.release[2] > '4') {
957                 return jt_dbg_modules_2_5(argc, argv);
958         } else {
959                 return jt_dbg_modules_2_4(argc, argv);
960         }
961
962         return 0;
963 }
964
965 int jt_dbg_panic(int argc, char **argv)
966 {
967         int rc;
968         struct libcfs_ioctl_data data;
969
970         if (argc != 1) {
971                 fprintf(stderr, "usage: %s\n", argv[0]);
972                 return 0;
973         }
974
975         memset(&data, 0, sizeof(data));
976         if (libcfs_ioctl_pack(&data, &buf, max) != 0) {
977                 fprintf(stderr, "libcfs_ioctl_pack failed.\n");
978                 return -1;
979         }
980
981         rc = l_ioctl(LNET_DEV_ID, IOC_LIBCFS_PANIC, buf);
982         if (rc) {
983                 fprintf(stderr, "IOC_LIBCFS_PANIC failed: %s\n",
984                         strerror(errno));
985                 return -1;
986         }
987         return 0;
988 }